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HomeMy WebLinkAboutPA2019-023 CC NOE 05-21-2020_FiledNotice of Exemption To: County Clerk County of Orange Public Services Division Santa Ana, CA 92702 From: City of Newport Planning Division 100 Civic Center Drive P.O. Box 1768 Newport Beach, CA 92658-8915 (949) 644-3200 Project Title: Office and Parking Structure (PA2019-023) Project Applicant: Laidlaw Schultz Architects, 3111 Second Avenue #1, Newport Beach, CA 92625 Attention: Jonathan Yee, jyee@lsarchitect.com, 949-645-9982 Project Location – Specific: 215 Riverside Avenue, Newport Beach, CA (corner of Riverside Avenue and Avon Street) Project Location – City: Newport Beach Project Location – County: Orange Description of Nature, Purpose and Beneficiaries of Project: The Project proposes to demolish an existing 8,056-square-foot restaurant/office building and associated 18-space surface parking lot and construct a new 40- space, two-level parking structure and a 2,744-square-foot office building. A coastal development permit was approved for the Project development within the coastal zone and a conditional use permit was approved to authorize the construction of the parking structure adjacent to the residentially zoned property. The project includes hardscape, drainage, and landscape improvements. The proposed development complies with all applicable development standards including height, setbacks, and floor area limits. Name of Public Agency Approving Project: City of Newport Beach Name of Person or Agency Carrying out Project: Laidlaw Schultz Architects Exempt Status: (check one): Ministerial (Sec. 21080(b)(1); 15268); Declared Emergency (Sec. 21080(b)(3); 15269(a)); Emergency Project (Sec. 21080(b)(4); 15269(b)(c)); Categorical Exemption. State type and section number: Class 32 (Section 15332) - Infill Development Statutory Exemptions. State code number: Reasons why project is exempt: See attached pages and site plan. Lead Agency Contact Person/Title:Gregg Ramirez, Principal Planner Contact Phone No./Ext: 949-644-3219 If filed by applicant: 1. Attach certified document of exemption finding. 2. Has a Notice of Exemption been filed by the public agency approving the project?Yes No Signature: Title: Gregg Ramirez, Principal Planner Date: 05-21-2020 Signed by Lead Agency Signed by Applicant Authority cited: Sections 21083 and 21110, Public Resources Code. Reference: Sections 21108, 21152, and 21152.1, Public Resources Code. 04/04/2019 EXHIBIT A California Environmental Quality Act ("CEQA") Determination The Garden Office and Parking Structure 215 Riverside Avenue Newport Beach, CA CEQA Section 15332. In -Fill Development Projects The Project is categorically exempt under Section 15332, of the California Environmental Quality Act (CEQA) Class 32 (In -Fill Development Projects) set forth in Title 14, Division 6, Chapter 3 ("CEQA Guidelines"). This exemption applies to in -fill development projects in urban areas that are consistent with the General Plan and applicable development standards. In addition, the proposed development must occur on a site of no more than five (5) acres, have no value as habitat for endangered, rare or threatened species, be adequately served by all utilities and public services, and must not result in any significant effects relating to traffic, air quality, water quality, or any other significant effect on the environment due to an unusual circumstance. Class 32 exemptions for in -fill development projects are required to meet the following conditions: a) The project is consistent with the applicable general plan designation and all applicable general plan policies as well as with the applicable zoning designation and regulations. The General Plan Land Use Element designates the site as General Commercial (CG) which is intended to provide for a wide variety of commercial activities oriented primarily to serve citywide or regional needs. Development of the site will be consistent with General Plan policies as indicated below. The Project is consistent with the 0.5 FAR limit for the Property. Land Use Policies Policy LU2.1 Resident -Serving Land Uses. Accommodate uses that support the needs of Newport Beach's residents including housing, retail, services, employment, recreation, education, culture, entertainment, civic engagement, and social and spiritual activity that are in balance with community natural resources and open spaces. Policy LU2.2 Sustainable and Complete Community. Emphasize the development of uses that enable Newport Beach to continue as a self-sustaining community and minimize the need for residents to travel outside of the community for retail, goods and services, and employment. Policy LU 2.8 Adequate Infrastructure. Accommodate the types, densities, and mix of land uses that can be adequately supported by transportation and utility infrastructure (water, sewer, storm drainage, energy, and 9-25 so on) and public services (schools, parks, libraries, seniors, youth, police, fire, and so on). Policy LU3.2 Growth and Change. Enhance existing neighborhoods, districts and corridors, allowing for re -use and infill with uses that are complementary in type, form, scale, and character. Changes in use and/or density/intensity should be considered only in those areas that are economically underperforming, are necessary to accommodate Newport Beach's share of projected regional population growth, improve the relationship and reduce commuting distance between home and jobs, or enhance the values that distinguish Newport Beach as a special place to live for its residents. The scale of growth and new development shall be coordinated with the provision of adequate infrastructure and public services, including standards for acceptable traffic level of service. Policy LU 4.1 Land Use Diagram. Accommodate land use development consistent with the Land Use Plan. Figure LU1 depicts the general distribution of uses throughout the City and Figure LU2 through Figure LU15 depict specific use categories for each parcel within defined Statistical Areas. Table LU1 (Land Use Plan Categories) specifies the primary land use categories, types of uses, and, for certain categories, the densities/intensities to be permitted. The permitted densities/intensities or amount of development for land use categories for which this is not included in Table LU1, are specified on the Land Use Plan, Figure LU4 through Figure LU15. These are intended to convey maximum and, in some cases, minimums that may be permitted on any parcel within the designation or as otherwise specified by Table LU2 (Anomaly Locations). The office use is intended to serve local residents and the parking structure will serve the Project while also providing additional spaces to serve surrounding businesses and uses in the Mariners' Mile community on a lease basis. The use complements the existing type and character of the nearby development, which includes a variety of commercial and residential development. As further discussed in part (e) of this analysis, there is adequate capacity in the sewer and water facilities, circulation, and other public services and facilities to provide an adequate level of service to the Project. The Project (i.e., office and parking structure) represents "in -fill" development that can be served by the existing infrastructure. The Property is located within the Commercial General (CG) Zoning District, which is intended to provide for a range of neighborhood -serving retail and service uses along street frontages that are located and designed to foster pedestrian activity. Pursuant to Section 20.20.020 (Commercial Zoning Districts Land Uses and Permit Requirements), office uses are a permitted use within the Commercial General Zoning District. A-2 9-26 Project Desiqn Policies Policy 5.2.1 Architecture and Site Design. Require that new development within existing commercial districts and corridors complement existing uses and exhibit a high level of architectural and site design in consideration of the following principals: Seamless connections and transitions with existing buildings, except where developed as a free-standing building, modulation of building masses, elevations and rooflines to promote visual interest, architectural treatment of all building elevations, including ancillary facilities such as storage, truck loading and unloading, and trash enclosures, treatment of the ground floor of buildings to promote pedestrian activity by avoiding long continuous blank walls, incorporating extensive glazing for transparency, and modulating and articulating elevations to promote visual interest, clear identification of storefront entries, incorporation of signage that is integrated with the buildings' architectural character, architectural treatment of parking structures consistent with commercial buildings, including the incorporation of retail in the ground floors where the parking structure faces a public street or pedestrian way, extensive on-site landscaping, including mature vegetation to provide a tree canopy to provide shade for customers, incorporation of plazas and expanded sidewalks to accommodate pedestrian, outdoor dining, and other activities, clearly delineated pedestrian connections between business areas, parking, and to adjoining neighborhoods and districts paving treatment, landscape, wayfinding signage, and soon), integration of building design and site planning elements that reduce the consumption of water, energy, and other renewable resources. The Project includes a 2,744 -square -foot office building and a 41 space parking structure. The building provides a flat parapet roofline and brick fagade with the primary pedestrian entrance located along the street frontage. The architectural style of the building is designed to complement the adjacent retail shopping center to the south, with a brick fagade, fabric awnings, and arched window and entryways. The parking structure is accessible from Avon Street and Riverside Avenue and accommodates visitors, employees, and surplus parking to serve the surrounding area. Appropriate pedestrian connections are maintained along the adjacent sidewalks of Riverside Avenue and Avon Street. A-3 9-27 Neighborhood Compatibility Policies Policy LU5.2.2 Buffering Residential Areas. Require that commercial uses adjoining residential neighborhoods be designed to be compatible and minimize impacts through such techniques as: Incorporation of landscape, decorative walls, enclosed trash containers, downward focused lighting fixtures, and/or comparable buffering elements; Attractive architectural treatment of elevations facing the residential neighborhood; Location of automobile and truck access to prevent impacts on neighborhood traffic and privacy. Policy LU6.16.5 Compatibility of Business Operations with Adjoining Residential Neighborhoods. Work with local businesses to ensure that retail, office, and other uses do not adversely impact adjoining residential neighborhoods. This may include strategies addressing hours of operation, employee loitering, trash pickup, truck delivery hours, customer arrivals and departures, and other activities. Policy LU6.16.6 Design Compatibility with Adjoining Residential Neighborhoods. Require that building elevations facing adjoining residential units be designed to convey a high-quality character and ensure privacy of the residents, and that properties be developed to mitigate to the maximum extend feasible impacts of lighting, noise, odor, trash storage, truck deliveries, and other business related activities. Building elevations shall be architecturally treated and walls, if used as buffers, shall be well-designed and landscaped to reflect the areas residential village character. The Project incorporates a variety of features to ensure neighborhood compatibility, including landscaping at the rear adjacent to residential properties and Cliff Drive Park, attractive architectural treatments including a trellis at the second level of the proposed parking structure. The majority of the parking structure is built into the slope on site to maintain views for surrounding residents and public park areas. Additionally, the Applicant has reduced the height of the parking structure to the height of the existing building. Parking structure access is specifically designed with first level access from Avon Street and second level access from Riverside Avenue to maximize the efficiency of parking and circulation on the Property. The location of vehicle access will ensure existing neighborhood traffic and privacy patterns are maintained. A trash enclosure is located at the southwest portion of the parking structure to minimize odors and noise to the nearby properties. Project lighting will be reviewed with a photometric study at plan check to ensure exterior lighting is compatible with surrounding residential development. Adequate setbacks are incorporated into the Project's design to ensure that the office building and parking structure will be compatible with the adjoining residential properties. A minimum five (5) foot setback is provided between the nearest residences. Mariners' Mile Policies LU 6.19.11 Pedestrian -Oriented Village. Require that inland properties that front onto internal streets within the Community/Neighborhood Village locate buildings along and forming a semi continuous building wall along the sidewalk, with parking to the rear in structures or in shared facilities and be designed to promote pedestrian activity. LU 6.19.12 Properties Abutting Bluff Faces. Require that development projects locate and design buildings to maintain the visual quality and maintain the structural integrity of the bluff faces. The Property is located on an inland portion of Mariners' Mile. The proposed office building and parking structure is designed for pedestrian access fronting the intersection of Riverside Avenue and Avon Street to improve the pedestrian oriented quality of the Village area. The site is a steeply sloping lot that was previously developed with a surface level parking area of 18 -parking spaces, and 8,056 -square -foot, three-story, commercial building encompassing office space and a former restaurant. The existing commercial building continues to include office uses and would be demolished. When redeveloped, the new parking structure will make use of an existing retaining wall on the site to maintain the visual quality and integrity of the bluff area at the rear portion of the Property. b) The proposed development occurs within city limits on a project site of no more than five acres substantially surrounded by urban uses. The Project site is within the Newport Beach city limits, and consists of 16,246 square feet or 0.37 -acres of land area. The Project site is surrounded by other urban uses including retail, restaurant, and office uses to the south and southwest, residential uses to the north and east of the site, and Cliff Drive Park to the northwest and northeast. c) The project site has no value, as habitat for endangered, rare or threatened species. The Property is vacant and has no native vegetation and/or habitat. As noted above, the site is currently developed with a restaurant and office building with an 18 -space surface parking lot. There is no potential for special -status plants or animals to exist on the vacant lot. A biological resources analysis (Exhibit 5) has confirmed the offsite presence of a wetland resource area, located on the northerly edge of Avon Street to the west of the Property. The memorandum explains that this wetland is a slope wetland or groundwater fed wetland that has been documented at this location since at least 1989. The biological analysis included mapping of the wetland and inventory of the species occupying the area. This indicates the wetland is three (3) to six (6) feet wide directly adjacent to Avon Street and includes a mix of native and non-native species. The source of water is fed by a spring and/or runoff, which drains toward the west, discharging into a drainage culvert west of the Property across from the BMW dealership property. A-5 9-29 Even though the wetland is not on the Project site and no diking dredging or filling is proposed, the following analysis is provided to demonstrate the Project's consistency with the certified Local Coastal Program pursuant to the California Coastal Act. Coastal Land Use Policy 4.2.2.3 and Section 21.306.040 (Wetlands, Deepwater Areas, and Other Water Areas) of the Local Coastal Program requires a 100 foot buffer between development and wetlands unless: a. One hundred (100) foot wide buffer is not possible due to site-specific constraints; and b. The proposed narrower buffer would be amply protective of the biological integrity of the wetland given the site-specific characteristics of the resource and of the type and intensity of disturbance. Existing site wall and driveway encroachments over the Property line would be removed and increase the buffer distance from 29 feet to 39 feet from the wetland. Further, the proposed erosion control plan demonstrates that adequate measures such as a silt fence, straw wattle, and other necessary protections will be taken to protect surrounding properties from erosion and discharge of pollutants during construction. The biologist's analysis concluded that there would be no significant impacts to wetland ESHA associated with the re -development of the Property and that 39 foot buffer is sufficient for the long-term maintenance and health of the wetland resource. Additionally, since the Project would not affect the wetland directly through dredging, filling, or other alteration, notification and/or permitting under California Department of Fish and Wildlife Section 1602 is not required. Thus, there would be no significant impacts to wetland ESHA associated with the Project. For these reasons, the Project site has no value as habitat for endangered, rare or threatened species. Given the urban character of the surrounding area, no significant impacts to biological resources would occur. d) Approval of the project would not result in any significant effects relating to traffic, noise, air quality, or water quality. With respect to traffic, an analysis of traffic trips for the Project concluded that the generated trips would not result in a significant traffic impact. Construction of the Project is anticipated to be completed in 2020. The Project is expected to generate 46 trips on a typical weekday, with five (5) morning peak hour trips and seven (7) evening peak hour trips. This represents a 248 trip reduction in average daily trips for the Property when compared to the existing occupied and operating uses. The restaurant is vacant and the office uses are operating at this time and the existing office uses generate 50 average daily trips with 6 AM trips and 6 PM trips. As such, the project -related traffic would not cause or contribute to an unacceptable level of service with the circulation network adjacent to the Project. The Project will provide adequate, convenient parking for employees and customers or visitors based upon the review of the City's Traffic Engineer. Approval of the Project would not result in any significant effect related to traffic or circulation. With respect to noise, an acoustical report prepared March 4, 2019 and updated in February 2020 by Urban Crossroads (Exhibit 2) confirms that sound levels will remain in 9-30 compliance with the noise standards in Section 14.25,025 of the NEMC. The unmitigated Project operational noise levels were estimated to range from 28.7 to 48.2 db(A)' Leg2 in the worst case. No significant noise impacts will occur and the exterior noise levels would comply with the City's more conservative residential exterior noise standard of 55 dBA Leq for daytime and 50 dBA Leq for nighttime. Therefore, no additional exterior noise abatement measures are required. Additionally, a supplemental noise assessment was provided, which compares the projected project noise to the ambient nighttime noise of four commercial parking areas in the City. The results of the supplemental assessment found similar noise levels to that of the initial analysis and concludes that the initial analysis adequately describes the potential project parking lot noise levels. The Project will comply with all applicable provisions of the City's Noise Ordinance, which allows for construction between specific hours as set forth in Chapter 10.28 of the NBMC. The Project must also be consistent with the City's interior noise standards established in the General Plan Noise Element, including Policy N1.1, N1.2, and N1.5. With respect to air quality, neither short-term nor long-term air pollutant emissions will exceed significance thresholds established by the SCAQMD3. Nonetheless, the Project is required to comply with applicable SCAQM regulations. Therefore, approval of the Project would not result in any significant effects relating to air quality. With respect to water quality, a preliminary Water Quality Management Plan (Exhibit 3) has been reviewed by the City of Newport Beach and implementation of the Project would not result in potentially significant impacts to the drainage patterns on-site. The Project results in a reduction of impervious surfaces on-site. Water quality objectives will be achieved through the incorporation of Best Management Practices (BMPs) identified in the preliminary Water Quality Management Plan (Exhibit 3) during construction and post - project implementation. Project implementation will not change the general drainage pattern of the Property. Current on-site drainage patterns consist of runoff from the front portion of the Property, which is directed into a gravel bed for infiltration prior to discharge to the street. Runoff from the remaining portion of the site will be collected in an area drain system and discharged through a bio -retention planter box at the sides of the property and then pumped to the street for discharge. Under the Project, hardscape, parking structure, and landscape area runoff will be collected in proposed bioretention planter boxes and filter inserts prior to discharge into the underground storm drain system. Approval of the project would not result in any significant effect related to water quality. Furthermore, the existing drainage facilities have adequate capacity to accommodate the increase in surface runoff generated by the proposed project based upon the review by the Project's engineer. e) The site can be adequately served by all required utilities and public services. All required utilities, including sewer, water, energy, telephone, etc., exist within the project site. A domestic water service and meter and fire water service and meter are located toward the southwest property line along Avon Street and Riverside Avenue. A dB(A) Weights a sound spectrum relative to the sensitivity of the human ear. Leq Steady-state "average" sound level over a stated time period (15 minute time period per the NBMC). 3 littp://www.agmd.gov/docs/default-source/cega/liandbook/scagmd-aiz--quality-sigiiifiicance-tliresiiolds.pdO. sfvrsn=2 A-7 9-31 sewer line is located along the southern property line in Avon Street, which drains to a line in Riverside Avenue. A water/waste water calculation has been prepared for the proposed development (Exhibit 4). Project implementation is estimated to utilize less water and waste water than the existing restaurant and office building on-site. Development of a new office and parking structure is estimated to result in a decrease of 3,689 GPD of waste water generation and a decrease of 339 GPD of water demand. No backbone facilities (i.e., master -planned roads and/or utilities) will be required to accommodate the Project. The nearest fire station is one (1) mile south of the Project at 475 32nd Street on the Balboa Peninsula. Furthermore, all of the public services, including police and fire protection, schools and parks and recreation, etc., are adequate to accommodate the proposed project. Thus, the site can be adequately served by all required utilities and public services. Determination CEQA Class 32 consists of projects characterized as in -fill development meeting the conditions described above. The Project consists of the demolition of the existing building and development of a new office building and parking structure with required off-street parking and is consistent with the City's General Plan land use designation General Commercial (GC) and Zoning designations Commercial General (CG) as it provides a resident -serving service use (office tenants) in close proximity to nearby residences and nonresidential uses in the area. The Project is consistent with the General Plan designations and policies, and can be found consistent with all applicable zoning regulations upon approval of the requested applications. The Property is 0.37 acres in size, is located within an urban area, and can be adequately served by all required utilities and public services. An acoustical analysis, preliminary Water Quality Management Plan, and water/waste-water generation memorandum have been prepared. An analysis of the Property indicates that the Property and adjacent areas have no value as habitat for endangered, rare, or threatened species. The Project is expected to have a less than significant impacts related to traffic, noise, air quality, and water quality. As described above, implementation of the Project will not result in any adverse effects on sensitive biological resources, traffic, air quality, noise, or water quality. There is no reasonable probability that the Project will have a significant effect on the environment due to unusual circumstances, nor will the Project result in any short-term or long-term impacts that were not previously considered in the Newport Beach General Plan and General Plan EIR. Therefore, the Project meets all of the conditions described above for in -fill development and qualifies for a Class 32 exemption. Piecemealing As identified in the staff report prepared for the City Council hearing, some commenters claim the "whole of the project" under CEQA should be deemed by the City to include the preliminary application received for the adjacent 2902 West Coast Highway Project for the Garden Restaurant. The Project may, however, be reviewed independent of the Garden Restaurant (PA2019-006) located at 2902 West Coast Highway. 9-32 Under CEQA, generally, the lead agency must consider the "whole of an action" when determining whether it will have significant environmental effects. (CEQA Guidelines, §§ 15993, subd. (h), 15378, subd. (a).) This rule is designed to prevent an agency from chopping a large project into many little ones" that may be individually insignificant but have cumulatively significant environmental effects. Breaking a single project into smaller parts and analyzing those parts separately is often referred to as "piecemealing" or segmentation." (See also, CEQA Guidelines, §§15165, 15158.) The California Supreme Court has adopted the following test for determining whether unlawful piecemealing has occurred. An agency must analyze a future expansion or other action as part of the initial project "if: (1) it is a reasonably foreseeable consequence of the initial project; and (2) the future expansion or action will be significant in that it will likely change the scope or nature of the initial project or its environmental effects." (Laurel Heights Improvement Assn. v. Regents of Univ. of Cal. (19 88) 47 Ca1.3d 376, 396; see also Pub. Resources Code, § 21665 [defining "project"].) Absent these two circumstances, the two proposals are not the same "project" and the lead agency may analyze them separately. There is, therefore, no piecemealing where, as here, two projects serve different purposes, can be implemented independently and/or have different project proponents. In short, the Project and Garden Restaurant demonstrate "independent utility" under CEQA for the following reasons: 1. The City has not received a complete application for the Garden Restaurant; 2. The proposals lack a causal link that makes them part of an overarching scheme, in that the Project does not cause the need for the Garden Restaurant, and the Garden Restaurant does not cause the need for the Project; and 3. The Project for consideration also does not rely upon the Garden Restaurant in order for its approval and/or implementation. The approval of the Project, for example, would not make approval of the Garden Restaurant proposal either more or less likely. Also, at the October 3, 2919 meeting, the Planning Commission was provided with a Parking Agreement Memorandum of Understanding by the Applicant's attorney entered into between the owner of 2902 West Coast Highway and an adjacent property owner that agreed to provide parking to 2902 West Coast Highway should the project be approved by the City in the future. In the event the City receives a complete application for the Garden Restaurant (PA2019- 006), the City would evaluate the project for full compliance with the City's General Plan, NBMC and CEQA. No substantial evidence in the record demonstrates that consideration of the two proposals independently constitutes improper piecemealing. This is not, for example, a project wherein a developer proposes to consider the potential effects of an infrastructure improvement (i.e. water or sewer) separate from the project itself (i.e. a housing project), If, new substantial evidence is introduced or the Council feels differently, it may refer both applications back to the Planning Commission for concurrent review if deemed appropriate. M 9-33 Exhibit 1 Traffic Trip Generation Calculations 9-34 Trip Generation Rates - ITE 10th Ed 215 Riverside Ave Trip Generation Calculations - 7111119 (DRAFT) Land Use Rate Type Size Unit In AM Peak Hour Out Total In PM Peak Hour Out Total Dail Total Quality Restaurant (') ITE 931 GFA TSF 0.58 0.15 0.73 5.23 2.57 7.80 83.84 General Office Building ITE 710 GFA TSF 1.00 0.16 1.16 0.18 0.97 1.15 9.74 Small Office Building ITE 712 GFA TSF 1.59 0.33 1.92 0.78 1.67 2.45 16.19 r.........,...., y.............. Land Use Rate Type Size Unit 15 Riverside Office ITE 710 5.146 TSF 15 Riverside Quality Restaurant ITE 931 2.910 1 TSF Land Use Rate Type Size Unit I Office Building ITE 710 5.146 TSF Restaurant ITE 931 2.910 TSF AM Peak Hour PM Peak Hour In Out Total In Out Total 5 1 6 1 5 6 2 0 2 15 8 23 244 printed 07/11/2019 9-35 Exhibit 2 Acoustical Study 9-36 manatt March 9, 2020 Via U.S. Mail and E -Mail: Gregg Ramirez City of Newport Beach 100 Civic Center Drive Newport Beach, CA 92660 gramirez@newportbeachca.gov Susan K. Hort Manatt, Phelps & Phillips, LLP Direct Dial: (714) 371-2528 E-mail: shori@manatt.com CI icnt-Matter: 63060-030 Re: Appeal of Coastal Development Permit No. CD2019-003, Conditional Use Permit No. UP2019-003, and Modification Permit No. MD2019-003 Dear Mr. Ramirez: This letter is sent on behalf of Laidlaw Schultz (Applicant), the applicant for the 215 Riverside Avenue project (Project), and 215 Riverside Drive, LLC (Owner), the owner of the building and parking lot at 215 Riverside, Enclosed please find a Supplemental Noise Assessment, dated February 4, 2020, prepared by Urban Crossroads for the Project that will be heard by the City Council on March 24, 2020. One of the allegations raised in the appeal filed by Berding & Weil on behalf of the four adjacent residents was that the Noise Impact Analysis (NIA) prepared by Urban Crossroads, dated April 3, 2019, did not accurately reflect the noise levels anticipated to be generated by the proposed Project. Although the NIA included 24-hour noise measurements taken from an office building in Lake Forest that housed a company that operated 24 hours a day with employees coming and going throughout that 24 hour period, the comment was made that because the parking at 215 Riverside could be used by off-site restaurants or retail uses, the noise from those patrons' cars would be different than the noise from the employees' cars in Lake Forest. In response to that comment, Urban Crossroads took noise measurements from four commercial uses (including two restaurants and two commercial centers with retail and restaurant uses) in the City, The noise measurements f om these uses demonstrate that the original NIA's noise measurements provided an accurate assessment of the noise environment at 215 Riverside. We would appreciate it if you would provide this report to the City Council, and include it in the record of proceedings for the 215 Riverside Project. Very truly yours, St.tsan K. Hori 695 Town Center Drive, 14th Floor, Costa Mesa, California 92526-1924 Telephone: 714.371.2500 Fax: 714.371.2550 Albany I Boston I Chicago I Los Angeles I New York I Orange County I Palo Alto I Sacramento I San Francisco I Washington, D.C. 9-37 manatt. Gregg Ramirez March 9, 2020 Page 2 Enclosure Cc with enclosure via email: James Campbell, Deputy Director Yolanda Summerhill, Esq., Ass't City Attorney Scott Laidlaw Kaitlin Crowley 325961550.1 S L'OMRBAM CROSSROADS February 4, 2020 Susan Hori Manatt, Phelps & Philips, LLP 695 Town Center Drive, 1411 Floor Costa Mesa, CA 92626 260 E. Baker St. 1 Suite 200 1 Costa Mesa, CA 92626 1 (949) 660-1994 SUBJECT: 215 RIVERSIDE SUPPLEMENTAL NOISE ASSESSMENT Dear Susan Hori: Urban Crossroads, Inc. is pleased to submit this Supplemental Noise Assessment for the 215 Riverside Project"), which Is located north of Avon Street and west of Riverside Avenue in the City of Newport Beach. The purpose of the Supplemental Noise Assessment is to describe the existing noise levels associated with the planned parking lot for the Project. This assessment expands on the previous parking lot reference noise level measurements found in the April 3rd, 2019 215 Riverside Avenue Noise Impact Analysis ("NIA") prepared by Urban Crossroads, Inc. (1) PREVIOUS FINDINGS OF THE 215 RIVERSIDE AVENUE NOISE IMPACT ANALYSIS The results of the original April 3rd, 2019 NIA indicated that the highest noise levels that would affect the adjacent noise -sensitive residential receiver locations are expected to approach 38.2 dBA Lecl from parking lot vehicle movements and 57.2 dBA Leq from HVAC units when measured at a distance of 50 feet. The NIA demonstrated that the noise generated from the expected Project operational noise sources (roof -top air conditioning and parking lot vehicle movements) will satisfy the City of Newport Beach Municipal Code daytime 55 dBA Leq and nighttime 50 dBA Leq exterior noise level standards at the neighboring residential uses. Based on the findings in the NIA, no additional exterior noise abatement measures (e.g., noise barriers or operational mitigation measures) are required. The reference noise level measurements from the original NIA used to describe the Project noise levels are shown in Table 1 below. TABLET: REFERENCE NOISE LEVEL MEASUREMENTS As measured by Urban Crossroads, Inc. on 7/27/2015 at the Santee Walm art located at 170 Town Center Parkway. 2 As measured by Urban Crossroads, Inc. on 5/17/2017 at the Panasonic Avionics Corporation in the City of Lake Forest. Reference noise levels at 50 feet represent the normalized noise source levels for comparison at a common distance. 12356-11 Noise Memo L URCROSBAN 9-39 Reference Noise Total Ref. Source Levels (dBA Leq) Noise Source Duration Distance Height hh:mm:ss) Feet) (Feet) @ Ref. @ 50 Distance Feee Roof -Top Air Conditioning Unitsl 96:00:00 5' 4' 77.2 57.2 Parking Lot Vehicle Movements 01:00:00 1 10' 1 5' 52.2 38.2 As measured by Urban Crossroads, Inc. on 7/27/2015 at the Santee Walm art located at 170 Town Center Parkway. 2 As measured by Urban Crossroads, Inc. on 5/17/2017 at the Panasonic Avionics Corporation in the City of Lake Forest. Reference noise levels at 50 feet represent the normalized noise source levels for comparison at a common distance. 12356-11 Noise Memo L URCROSBAN 9-39 Susan Hori Manatt, Phelps & Philips, LLP February 4, 2020 Page 2 It is important to note that the Project operational noise levels provided in the study assumed a conservative estimation of the future noise environment, with the roof -top air conditioning units and parking lot vehicle movements all operating continuously, and simultaneously. Moreover, the analysis assumed that the highest reference noise source activity for all noise sources operate every minute of every hour in each day. Therefore, the analysis includes no periods of inactivity, and describes the continuous operation of operational noise source activities across both daytime and nighttime hours. In reality the noise level impacts will likely vary throughout the day. For example, rooftop air conditioning will not be operating at night for the 215 Riverside Avenue building. In addition, at the October 17, 2019 Planning Commission hearing the project proponent agreed to extend the rooftop trellis and prohibit parking on the upper parking level after 11:00 pm. Any cars on the upper parking level parked before 11:00 pm would be allowed to remain. The upper parking level restrictions would also contribute to reducing potential noise levels associated with parking activities. REFERENCE NOISE LEVEL MEASUREMENTS As previously indicated, the purpose of this assessment is to supplement the existing parking lot reference noise level measurements with additional noise level measurement data describing similar parking lots in area. To identify the potential parking lot noise levels from the Project, long-term reference noise level measurements were collected at the following locations as shown on Exhibit A: Mariner's Mile Square Parking Lot On the Rocks Bar and Grill Parking Lot Parking Lot at West Oceanfront and 22nd Street The Landing Parking Lot MEASUREMENT PROCEDURES To assess the potential noise levels generated by the proposed Project parking lot, reference noise level measurements were collected between 11:00 a.m. on Friday, December 131h, 2019 to 8:00 a.m. on Sunday, December 16th, 2019. Appendix A includes photographs of the reference parking lot activities. The long-term noise level measurements were recorded using Piccolo Type 2 integrating sound level meter and dataloggers. The sound level meter was calibrated using a Larson -Davis calibrator, Model CAL 200. All noise meters were programmed in "slow" mode to record noise levels in "A" weighted form. The sound level meters and microphones were equipped with a windscreen during all measurements. All noise level measurement equipment satisfies the American National Standards Institute (ANSI) standard specifications for sound level meters ANSI S1.4-2014/IEC 61672-1:2013. (2) REFERENCE NOISE LEVEL MEASUREMENT SUMMARY Table 2 shows the peak hour nighttime (10:00 p.m. to 7:00 a.m.) reference parking lot noise level measurements collected in similar parking lots near the Project site in City of Newport Beach. All reference measurements are presented at both the reference distance they were taken, in addition to a uniform reference distance of 50 feet for comparison purposes. To present a conservative approach, 11356-11 Noise Memo URBAN 10 Susan Hori Manatt, Phelps & Philips, LLP February 4, 2020 Page 3 the peak nighttime noise hour for each parking lot is used to describe the noise reference noise levels in this assessment. Table 2 shows that during the peak nighttime noise hour, the four reference parking lot noise level measurements ranged from 35.7 to 40.5 dBA Leq. TABLE 2: REFERENCE PARKING LOT NOISE LEVELS As measured by urban Crossroads, Inc. on 5/17/2017 at the Panasonic Avionics Corporation in the City of Lake Forest. 2 As measured by Urban Crossroads, Inc. on 12/13/2019 to 12/16/2019 in the City of Newport Beach. 3 Reference noise levels at 50 feet represent the normalized noise source levels for comparison at a common distance. Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" - 10:00 p.m. to 7:00 a.m. MARINER'S MILE SQUARE Location Ll is located along Avon Street and serves the Mariner's Mile Square shopping center. There are approximately 117 parking spaces occupied by customers of the surrounding businesses. This parking lot is primarily active during the day but is likely to have nighttime activity from the restaurants and bars across Coast Highway. ON THE ROCKS BAR AND GRILL Location L2 is located north of Pacific Coast Highway serving On the Rocks Bar and Grill. This parking lot is used primarily for customers of the On the Rocks Bar and Grill restaurant. With about 28 parking spaces this parking lot is active during daytime hours and some nighttime hours as the restaurant remains open until 10:00 p.m. WEST OCEAN FRONT AND 22ND STREET Location L3 is located on West Ocean Front and 22nd Street serving restaurants, bars, and stores along West Ocean Front. This parking lot is active during all times as bars are open late with some stores open 24 hours a day. THE LANDING Location L4 is located south of 32nd Street and west of Newport Boulevard servingthe Landing Shopping center. Daytime use comes primarily from customers of The Landing which includes restaurants, grocery stores, and banks. Nighttime activity is likely to come from customers of Malarky's Irish Pub which is on the same block. 12356-11 Noise Memo L URBANCROSSROADS 9-41 Reference Noise Total Ref. Source Levels (deA 4q) Reference Parking Lot Location Duration Distance Height hh:mm:ss) Feet) Feet) @ Ref. @ 50 Distance Feet3 Panasonic Avionics (Original Reference)' 01:00:00 10' 5' 52.2 38.2 Mariner's Mile Square' Ll 01:00:00 T 5' 55.7 35.7 On the Rocks Bar and Gri112 L2 01:00:00 5' S' 56.4 36.4 West Ocean Front and 22nd Street' L3 01:00:00 5' 5' 60.5 40.5 The Landing' L4 01:00:00 5' 5' 57.7 37.7 As measured by urban Crossroads, Inc. on 5/17/2017 at the Panasonic Avionics Corporation in the City of Lake Forest. 2 As measured by Urban Crossroads, Inc. on 12/13/2019 to 12/16/2019 in the City of Newport Beach. 3 Reference noise levels at 50 feet represent the normalized noise source levels for comparison at a common distance. Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" - 10:00 p.m. to 7:00 a.m. MARINER'S MILE SQUARE Location Ll is located along Avon Street and serves the Mariner's Mile Square shopping center. There are approximately 117 parking spaces occupied by customers of the surrounding businesses. This parking lot is primarily active during the day but is likely to have nighttime activity from the restaurants and bars across Coast Highway. ON THE ROCKS BAR AND GRILL Location L2 is located north of Pacific Coast Highway serving On the Rocks Bar and Grill. This parking lot is used primarily for customers of the On the Rocks Bar and Grill restaurant. With about 28 parking spaces this parking lot is active during daytime hours and some nighttime hours as the restaurant remains open until 10:00 p.m. WEST OCEAN FRONT AND 22ND STREET Location L3 is located on West Ocean Front and 22nd Street serving restaurants, bars, and stores along West Ocean Front. This parking lot is active during all times as bars are open late with some stores open 24 hours a day. THE LANDING Location L4 is located south of 32nd Street and west of Newport Boulevard servingthe Landing Shopping center. Daytime use comes primarily from customers of The Landing which includes restaurants, grocery stores, and banks. Nighttime activity is likely to come from customers of Malarky's Irish Pub which is on the same block. 12356-11 Noise Memo L URBANCROSSROADS 9-41 Susan Hori Manatt, Phelps & Philips, LLP February 4, 2020 Page 4 EXHIBIT A: REFERENCE MEASUREMENT LOCATIONS A sr r r. r..`\ Y.%f,, 5 .. PI w "Tf'. n. '`rRl tv y' f•t, 9 rf t: i••1•.PUP ti` fM 1. ti Y _J 1 0 •. i, gid. K ; rte i Ar w .•f• , I t! 1e M ;0 f ^( . J. -Y; fir r•. w,.-. . r..`\ Y.%f,, 5 .. PI w "Tf'. n. '`rRl tv y' f•t, LEGEND: Q Noise Measuremen[Locations 12356-11 Norse Memo y h r' le• 9-42 9 rf t: i••1•.PUP Alter . G- •. .Ai y rr fir r•. w,.-. . LEGEND: Q Noise Measuremen[Locations 12356-11 Norse Memo y h r' le• 9-42 Susan Hori Manatt, Phelps & Philips, LLP February 4, 2020 Page 5 CONCLUSIONS The reference parking lot measurements show that the original NIA adequately describes the potential Project parking lot noise levels. The four supplemental noise levels at similar reference parking lots in the City of Newport Beach ranged from 35.7 dBA Leq to 40.5 dBA Leq at 50 feet during the peak nighttime hours. This is generally consistent with the original NIA parking lot reference noise level measurement of 38.2 dBA Leq from the Panasonic Avionics Corporation parking lot. It is also important to recognize that while this assessment focuses on parking lot noise level impacts, the primary operational noise source activity of 57.2 dBA Leq is related to the HVAC units, which will not be operating at night. In effect, the reference noise levels of 38.2 dBA Leq associated with the parking lot are largely overshadowed by the HVAC.operational noise levels of 57.2 dBA l..eq, which will not operate at night. This Supplemental Noise Assessment demonstrates that original parking lot reference noise level of 38.2 dBA Leq adequately reflects the reference noise source levels ranging from 35.7 to 40.5 dBA Leq at similar parking lots in Newport Beach. Therefore, the analysis in the original NIA adequately describes the potential parking lot noise level impacts at the nearby noise sensitive residential land use. If you have any questions, please contact me directly at (949) 336-5979. Respectfully submitted, URBAN CROSSROADS, INC. Bill Lawson, P.E., INCE Principal REFERENCES 1. Urban Crossroads, Inc. 215 Riverside Avenue Noise Impact Analysis. April 3, 2019, 2. American National Standards Institute (ANSI). Specification for Sound Level Meters ANSI S1.4- 2014/IEC 61672-1:2013. 3. Harris, Cyril. Handbook of Acoustical Measurements and Noise Control, 1998. 12356-11 Noise Memo Ll uRBwri 9-43 This page intentionally left blank 12356-11 Noise Memo 1 APPENDIX A: REFERENCE NOISE LEVEL MEASUREMENT PHOTOS 12356-11 Noise Memo t uRBAPJ 9-45 This page intentionally left blank 12356-11 Noise Memo C'O uRBArd JN:12356 Reference Noise Source Photos LO_Panasonic_E 33, 39'58.790000"117, 40'20.490000" LO_Panasonic_N 33, 39' 58.790000"117, 40'20.490000" LO—Panasonic—SW 33, 39'58.790000"117, 40'20.490000" LI—Avon St_E 33, 37'14.800000"117, 55' 22.320000" LO_Panasonic _W 33, 39'58.790000"117, 40'20.490000" Ll Avon St_N 33, 37' 14.300000"117, 55' 22.840000" 9-47 JN:12356 Reference Noise Source Photos L1 Avon St—S 33, 37' 14.650000"117, 55' 22.730000" L2—On The Rocks_E 33, 37' 10.500000"117,55'14.410000" L2 On The Rocks_S 33, 37' 10.500000"117, 55' 14.410000" L1 Avon St_W 33, 37' 14.580000"117, 55'22.870000" L2 On The Rocks_N 33, 37' 10.570000"117, 55'14.470000" L2—On The Rocks_W 33, 37' 10.570000"117, 55 14.470000" JN:12356 Reference Noise Source Photos L3—Seaside _Bakery_E 33, 36'35.260000"117, 55'49,460000" 1-3_Seaside_Bakery_S 33, 36' 35.230000"117, 55'49.460000" 1-4_The Landings_E 33, 36'55.240000"117, 55'52.260000" L3—Seaside _Bakery_N 33, 36'35.370000"117, 55' 49.480000" L3—Seaside _Bakery_W 33, 36' 35.230000"117, 55' 49.460000" L4_The Landings_N 33, 36'55.230000"117, 55'52.370000" JN:12356 Reference Noise Source Photos L4_TheLandings_S 33, 36'55.210000"117, 55' 52.230000" L4_The Landings_W 33, 36' 55.210000"117, 55'52.260000" 9-50 URBAN CROSSROADS 215 Riverside Avenue NOISE IMPACT ANALYSIS CITY OF NEWPORT BEACH PREPARED BY: Bill Lawson, PE, INCE blawson@urbanxroads.com 949) 336-5979 Alex Wolfe, INCE awolfe@urbanxroads.com 949) 336-5977 APRIL 3, 2019 12356-04 Noise Study 9-51 12356-04 Noise Study 215 Riverside Avenue Noise Impact Analysis O URBAMCROSSROADS 9-52 215 Riverside Avenue Noise Impact Analysis TABLE OF CONTENTS TABLEOF CONTENTS........................................................................................................................... III APPENDICES........................................................................................................................................ I I I LISTOF EXHIBITS.................................................................................................................................IV LISTOF TABLES................................................................................................................................... IV LIST OF ABBREVIATED TERMS............................................................................................................. IV EXECUTIVESUMMARY.........................................................................................................................1 1 INTRODUCTION ........................................................................................................................... 3 1.1 Site Location.................................................................................................................................. 3 1.2 Project Description........................................................................................................................ 3 2 FUNDAMENTALS.........................................................................................................................7 2.1 Range of Noise.............................................................................................................................. 7 2.2 Noise Descriptors.......................................................................................................................... 8 2.3 Sound Propagation........................................................................................................................ 8 2.4 Noise Control................................................................................................................................ 9 2.5 Noise Barrier Attenuation............................................................................................................. 9 2.6 Community Response to Noise................................................................................................... 10 3 REGULATORY SETTING.............................................................................................................. 13 3.1 City of Newport Beach Municipal Code Noise Standards........................................................... 13 4 EXISTING NOISE LEVEL MEASUREMENTS................................................................................... 15 4.1 Measurement Procedure and Criteria........................................................................................15 4.2 Noise Measurement Locations................................................................................................... 15 4.3 Noise Measurement Results....................................................................................................... 16 5 METHODS AND PROCEDURES.................................................................................................... 19 5.1 Reference Operational Noise Levels...........................................................................................19 5.2 CadnaA Noise Prediction Model................................................................................................. 20 6 OPERATIONAL IMPACTS............................................................................................................ 23 7 REFERENCES..............................................................................................................................25 8 CERTIFICATION..........................................................................................................................27 APPENDICES APPENDIX 3.1: CITY OF NEWPORT BEACH MUNICIPAL CODE APPENDIX 4.1: STUDY AREA PHOTOS APPENDIX 4.2: AMBIENT NOISE LEVEL MEASUREMENT WORKSHEETS APPENDIX 6.1: CADNAA NOISE MODEL DATA INPUTS & RESULTS 12356-04 Noise Study L'* URBANCROSSROADS 9-53 215 Riverside Avenue Noise Impact LIST OF EXHIBITS EXHIBIT1-A: LOCATION MAP.............................................................................................................. 4 EXHIBIT 1-B: PROJECT SITE PLAN......................................................................................................... 5 EXHIBIT 2-A: TYPICAL NOISE LEVELS.................................................................................................... 7 EXHIBIT 2-B: SOURCE -PATH -RECEIVER CONCEPT............................................................................... 10 EXHIBIT 2-C: NOISE LEVEL INCREASE PERCEPTION............................................................................. it EXHIBIT 4-A: NOISE MEASUREMENT LOCATIONS............................................................................... 18 EXHIBIT 6-A: OPERATIONAL NOISE SOURCE LOCATIONS.................................................................... 24 LIST OF TABLES TABLE 3-1: EXTERIOR OPERATIONAL NOISE LEVEL STANDARDS.........................................................13 TABLE 4-1: 24-HOUR AMBIENT NOISE LEVEL MEASUREMENTS.......................................................... 17 TABLE 5-1: REFERENCE NOISE LEVEL MEASUREMENTS......................................................................19 TABLE 6-1: OPERATIONAL NOISE LEVEL COMPLIANCE....................................................................... 23 FHWA Federal Highway Administration INCE Institute of Noise Control Engineering Leq Equivalent continuous (average) sound level Lmax Maximum level measured over the time interval Project 215 Riverside Avenue 12356-04 Noise Study LdURBAN iv CROSSROADS 9-54 LIST OF ABBREVIATED TERMS 1) Reference (See Section 7 for a list of all references) ANSI American National Standards Institute CadnaA Computer Aided Noise Abatement CNEL Community Noise Equivalent Level dBA A -weighted decibels EPA Environmental Protection Agency FHWA Federal Highway Administration INCE Institute of Noise Control Engineering Leq Equivalent continuous (average) sound level Lmax Maximum level measured over the time interval Project 215 Riverside Avenue 12356-04 Noise Study LdURBAN iv CROSSROADS 9-54 215 Riverside Avenue Noise Impact Analysis EXECUTIVE SUMMARY Urban Crossroads, Inc. has prepared this noise study to evaluate the potential operational noise levels associated with the proposed two-story commercial office with attached parking structure at 215 Riverside Avenue ("Project"), and to identify whether exterior noise abatement measures are required to meet the City of Newport Beach Municipal Code exterior noise level standards. 1) The Project site is located at 215 Riverside Avenue in the City of Newport Beach, and consists of a two-story commercial building with attached two-level parking structure. Using reference noise levels of conservatively -representative operational activities, including roof -top air conditioning units and parking structure vehicle movements, this analysis estimates the Project - related operational (stationary -source) noise levels at the nearby noise -sensitive residential homes and adjacent commercial uses, consistent with the City of Newport Beach Municipal Code. The City of Newport Beach Municipal Code identifies base exterior noise level standards which do not account for the existing ambient noise level. If existing ambient noise levels in the Project study area are higher than the base exterior standards, the ambient noise levels become the adjusted exterior noise level standards per Section 10.26.025 (A) of the City of Newport Beach Municipal Code. As such, to present a conservative approach, this analysis relies on the more restrictive base exterior noise level standards of 55 dBA LeQ daytime and 50 dBA L.eq nighttime at residential uses per the City of Newport Beach Municipal Code; rather than adjusted exterior noise levels based on higher existing ambient noise levels measured in the Project study area which ranged from 54.8 to 63.2 dBA 4Q during the daytime, and 47.2 to 59.6 dBA L.eq during the nighttime hours, as shown in Table 4-1 of this report. Moreover, it is important to note that the Project operational noise levels described in this report assume a worst-case noise environment with the Project's roof -top air conditioning units and parking structure vehicle movements operating continuously throughout the daytime and nighttime hours. However, the noise levels associated with the Project are anticipated to vary throughout the day under typical operating conditions. The results of this conservative analysis show that the Project -related operational noise levels associated with roof -top air conditioning units and parking structure vehicle movements will remain below the City of Newport Beach Municipal Code daytime and nighttime exterior noise level standards at the nearby noise -sensitive residential homes and adjacent commercial uses. Therefore, no additional exterior noise abatement measures (e.g., noise barriers) are required. 12356-04 Noise Study URBAN 1 CROSSROADS 9-55 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study C4 URBAM CROSSROADS 9-56 215 Riverside Avenue Noise Impact Analysis 1 INTRODUCTION This noise analysis has been completed to evaluate the potential future operational noise levels associated with the operation of a two-story commercial office building with attached parking structure at 215 Riverside Avenue ("Project"), and to identify the necessary exterior noise abatement measures, if any, to satisfy the City of Newport Beach Municipal Code exterior noise level standards. (1) This noise study describes the Project, provides information regarding noise fundamentals, outlines the local regulatory setting, provides the study methods and procedures for operational noise analysis, and evaluates the operational noise levels from the Project. 1.1 SITE LOCATION The Project is located at 215 Riverside Avenue in the City of Newport Beach, as shown on Exhibit 1-A. Existing noise -sensitive uses in the Project study area include residential homes to the north and east. It is important to note that the residential homes to the north and east of the Project site are situated at a higher elevation than the 215 Riverside Avenue site. Commercial uses in the Project study area are located to the west and south of the Project site. 1.2 PROJECT DESCRIPTION The Project consists of two-story commercial building with attached two-level parking structure. Exhibit 1-13 shows the Project site plan. 12356-04 Noise Study LO URBAN 3 CROSSROADS 9-57 39 115 Riverside Avenue Noise Impact Analysis EXHIBIT 1-B: PROJECT SITE PLAN e 1 1` 71 • I aa t • I . f. 7-7rL- 12356-04 Noise Study O URBANCROSSROADS 9-59 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12355-04 Noise Study O URBANCROSSROADS I 215 Riverside Avenue Noise Impact Analysis 2 FUNDAMENTALS Noise has been simply defined as "unwanted sound." Sound becomes unwanted when it interferes with normal activities, when it causes actual physical harm or when it has adverse effects on health. Noise is measured on a logarithmic scale of sound pressure level known as a decibel (dB). A -weighted decibels (dBA) approximate the subjective response of the human ear to broad frequency noise source by discriminating against very low and very high frequencies of the audible spectrum. They are adjusted to reflect only those frequencies which are audible to the human ear. Exhibit 2-A presents a summary of the typical noise levels and their subjective loudness and effects that are described in more detail below. EXHIBIT 2-A; TYPICAL NOISE LEVELS COMMON OUTDOOR COMMON INDOOR A - WEIGHTED SUBJECTIVE EFFECTS OF ACTIVITIES ACTIVITIES SOUND LEVEL dBA LOUDNESS NOISE THRESHOLD OF PAW 140 NEAR JET ENGINE 130 120 JET FLY -OVER AT 300m (1000 ft) ROCK BAND 110 LOUD AUTO HORN 100 GAS LAWN MOWER AT 1m (3 ft) 90 DIESEL TRUCK AT 15m (SO ft), at BO km/hr (50 mph) FOOD BLENDER AT 1m (3 ft) BO NOISY URBAN AREA, DAYTIME VACUUM CLEANER AT 3m (10 ft) 70 SPEECH - LOUD INTERFERENT HEAVY TRAFFIC AT 90m (300 ft) NORMAL SPEECH AT 1m (3 ft) 60 QUIET URBAN DAYTIME LARGE BUSINESS OFFICE 50 MODERATE SLEEP DISTURBANCEQUIETURBANNIGHTTIMETHEATER, LARGE CONFERENCE 40ROOM (BACKGROUND) QUIET SUBURBAN NIGHTTIME LIBRARY 30 FAINT QUIET RURAL NIGHTTIME BEDROOM AT NIGHT, CONCERT 20HALL (BACKGROUND) BROADCAST/ RECORDING NO EFFECT STUDIO 10 VERY FAINT LOWEST THRESHOLD OF HUMAN LOWEST THRESHOLD OF HUMAN 0 HEARING HEARING Source: Environmental Protection Agency Office of Noise Abatement and Control, Information on Levels of Environmental Noise Requisite to Protect Public Health and Welfare with on Adequate Margin of Safety (EPA/ONAC 550/9-74-004) March 1974. 2.1 RANGE OF NOISE Since the range of intensities that the human ear can detect is so large, the scale frequently used to measure intensity is a scale based on multiples of 10, the logarithmic scale. The scale for measuring intensity is the decibel scale. Each interval of 10 decibels indicates a sound energy ten times greater than before, which is perceived by the human ear as being roughly twice as loud. 2) The most common sounds vary between 40 dBA (very quiet) to 100 dBA (very loud). Normal conversation at three feet is roughly at 60 dBA, while loud jet engine noises equate to 110 dBA 12356-04 Noise Study O URBANCROSSROADS 9-61 215 Riverside Avenue Noise Impact Analysis at approximately 100 feet, which can cause serious discomfort. (3) Another important aspect of noise is the duration of the sound and the way it is described and distributed in time. 2.2 NOISE DESCRIPTORS Environmental noise descriptors are generally based on averages, rather than instantaneous, noise levels. The most commonly used figure is the equivalent level (L,q). Equivalent sound levels are not measured directly but are calculated from sound pressure levels typically measured in A - weighted decibels (dBA). The equivalent sound level (L,Qj represents a steady state sound level containing the same total energy as a time varying signal over a given sample period and is commonly used to describe the "average" noise levels within the environment. While sound pressure levels (e.g. Leq) quantify in decibels the intensity of given sound sources at a reference distance, sound power levels (PWL) are connected to the sound source and are independent of distance. Sound pressure levels vary substantially with distance from the source, and also diminish as a result of intervening obstacles and barriers, air absorption, wind and other factors. Sound power is the acoustical energy emitted by the sound source and is an absolute value that is not affected by the environment. 2.3 SOUND PROPAGATION When sound propagates over a distance, it changes in level and frequency content. The manner in which noise reduces with distance depends on the following factors. 2.3.1 GEOMETRIC SPREADING Sound from a localized source (i.e., a stationary point source) propagates uniformly outward in a spherical pattern. The sound level attenuates (or decreases) at a rate of 6 dB for each doubling of distance from a point source. Highways consist of several localized noise sources on a defined path and hence can be treated as a line source, which approximates the effect of several point sources. Noise from a line source propagates outward in a cylindrical pattern, often referred to as cylindrical spreading. Sound levels attenuate at a rate of 3 dB for each doubling of distance from a line source. (4) 2.3.2 GROUND ABSORPTION The propagation path of noise from a highway to a receiver is usually very close to the ground. Noise attenuation from ground absorption and reflective wave canceling adds to the attenuation associated with geometric spreading. Traditionally, the excess attenuation has also been expressed in terms of attenuation per doubling of distance. This approximation is usually sufficiently accurate for distances of less than 200 ft. For acoustically hard sites (i.e., sites with a reflective surface between the source and the receiver, such as a parking lot or body of water), no excess ground attenuation is assumed. For acoustically absorptive or soft sites (i.e., those sites with an absorptive ground surface between the source and the receiver such as soft dirt, grass, or scattered bushes and trees), an excess ground attenuation value of 1.5 d6 per doubling of distance is normally assumed. When added to the cylindrical spreading, the excess ground 12356-04 Noise Study L% URBAN 8 CROSSROADS 9-62 215 Riverside Avenue Noise Impact Analysis attenuation results in an overall drop-off rate of 4.5 d6 per doubling of distance from a line source. (5) 2.3.3 ATMOSPHERIC EFFECTS Receivers located downwind from a source can be exposed to increased noise levels relative to calm conditions, whereas locations upwind can have lowered noise levels. Sound levels can be increased at large distances (e.g., more than 500 feet) due to atmospheric temperature inversion i.e., increasing temperature with elevation). Other factors such as air temperature, humidity, and turbulence can also have significant effects. (4) 2.3.4 SHIELDING A large object or barrier in the path between a noise source and a receiver can substantially attenuate noise levels at the receiver. The amount of attenuation provided by shielding depends on the size of the object and the frequency content of the noise source. Shielding by trees and other such vegetation typically only has an "out of sight, out of mind" effect. That is, the perception of noise impact tends to decrease when vegetation blocks the line -of -sight to nearby resident. However, for vegetation to provide a substantial, or even noticeable, noise reduction, the vegetation area must be at least 15 feet in height, 100 feet wide and dense enough to completely obstruct the line -of sight between the source and the receiver. This size of vegetation may provide up to 5 dBA of noise reduction. The FHWA does not consider the planting of vegetation to be a noise abatement measure. (5) 2.4 NOISE CONTROL Noise control is the process of obtaining an acceptable noise environment for an observation point or receiver by controlling the noise source, transmission path, receiver, or all three. This concept is known as the source -path -receiver concept. (6) In general, noise control measures can be applied to these three elements. Exhibit 2-13 shows the source -path -receiver concept. 2.5 NOISE BARRIER ATTENUATION Effective noise barriers can reduce noise levels by 10 to 15 dBA, cutting the loudness of traffic noise in half. A noise barrier is most effective when placed close to the noise source or receiver. Noise barriers, however, do have limitations. For a noise barrier to work, it must be high enough and long enough to block the path of the noise source. (5) 12356-04 Noise Study '/ URBAN CROSSROADS 9-63 215 Riverside Avenue Noise Impact Analysis EXHIBIT 2-13: SOURCE -PATH -RECEIVER CONCEPT Source: FTA, Transit Noise and Vibration Impact Assessment Manual, Figure 3-1. 2.6 COMMUNITY RESPONSE TO NOISE Community responses to noise may range from registering a complaint by telephone or letter, to initiating court action, depending upon everyone's susceptibility to noise and personal attitudes about noise. Several factors are related to the level of community annoyance including: Fear associated with noise producing activities; Socio-economic status and educational level; Perception that those affected are being unfairly treated; Attitudes regarding the usefulness of the noise -producing activity; Belief that the noise source can be controlled. Approximately ten percent of the population has a very low tolerance for noise and will object to any noise not of their making. Consequently, even in the quietest environment, some complaints will occur. Another twenty-five percent of the population will not complain even in very severe noise environments. Thus, a variety of reactions can be expected from people exposed to any given noise environment. (7) Surveys have shown that about ten percent of the people exposed to traffic noise of 60 dBA will report being highly annoyed with the noise, and each increase of one dBA is associated with approximately two percent more people being highly annoyed. When traffic noise exceeds 60 dBA or aircraft noise exceeds 55 dBA, people may begin to complain. (7) Despite this variability in behavior on an individual level, the population can be expected to exhibit the following responses to changes in noise levels as shown on Exhibit 2-C. An increase or decrease of 1 dBA cannot be perceived except in carefully controlled laboratory experiments, a change of 3 dBA are considered barely perceptible, and changes of 5 dBA are considered readily perceptible. (5) 12356-04 Noise Study 0 URBAN 10 CROSSROADS i 215 Riverside Avenue Noise Impact Analysis EXHIBIT 2-C: NOISE LEVEL INCREASE PERCEPTION Twice as Loud Readily Perceptible -- __. _.. Barely Perceptible Just Perceptible 0 1 2 3 4 S 6 7 8 9 10 Noise Level Increase (dBA) 12356-04 Noise Study UO URBAN 11 CROSSROADS 9-65 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study URBAN 12 CROSSROADS 215 Riverside Avenue Noise imp Qct Analysis 3 REGULATORY SETTING To limit population exposure to physically and/or psychologically damaging as well as intrusive noise levels, the federal government, the State of California, various county governments, and most municipalities in the state have established standards and ordinances to control noise. In most areas, automobile and truck traffic is the major source of environmental noise. Traffic activity generally produces an average sound level that remains fairly constant with time. Air and rail traffic, and commercial and industrial activities are also major sources of noise in some areas. Federal, state, and local agencies regulate different aspects of environmental noise. Federal and state agencies generally set noise standards for mobile sources such as aircraft and motor vehicles, while regulation of stationary sources is left to local agencies. 3.1 CITY OF NEWPl7RT BEACH MUNICIPAL CODE NOISE STANDARDS The City of Newport Beach Municipal Code, Chapter10.26 Community Noise Control, establishes the permissible exterior noise levels that may intrude into a neighboring property. According to Section 10.26.025(A) exterior noise levels at single-family residential land uses (Noise Zone 1) shall not exceed 55 dBA Leq during the daytime hours (7:00 a.m. to 10:00 p.m.) and 50 dBA Leq during the nighttime hours (10:40 p.m. to 7:00 a.m.). (1) For commercial uses, exterior noise levels shall not exceed 65 dBA Leq during the daytime hours (7:00 a.m. to 10:00 p.m.) and 60 dBA Leq during the nighttime hours (10:00 p.m_ to 7.00 a.m.). The City of Newport Beach Municipal Code, Chapter10.26 Community Noise Control exterior noise level standards are shown on Table 3-1 and are included in Appendix 3.1. TABLE 3-1: EXTERIOR OPERATIONAL NOISE LEVEL STANDARDS Source: City of Newport Beach Municipal Code, Section 10.26.025 (Appendix 3.11. Base exterior noise level standards do not account for the existing ambient noise levels which, if higher than the base exterior standards, would become the adjusted exterior noise level standards per Section 10.26.A25 (A) of the City of Newport Sea ch Municipal Lode. As such, this analysis is teased on the more conservative base exterior noise level standards. TaytimW' = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p. m. to 7:00 a,m. 12356-04 Noise 5tudy 13 SII URBAN 9-67 Tirm Base Exterior Noise Y Used Period Level Standards dBA Lr Residential Daytime 55 Newport Noise Zone IJ Nighttime 50 Beach' Commercial Daytime 65 Noise Zone II) Nighttime 60 Source: City of Newport Beach Municipal Code, Section 10.26.025 (Appendix 3.11. Base exterior noise level standards do not account for the existing ambient noise levels which, if higher than the base exterior standards, would become the adjusted exterior noise level standards per Section 10.26.A25 (A) of the City of Newport Sea ch Municipal Lode. As such, this analysis is teased on the more conservative base exterior noise level standards. TaytimW' = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p. m. to 7:00 a,m. 12356-04 Noise 5tudy 13 SII URBAN 9-67 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study URBAN 14 CROSSROADS i 215 Riverside Avenue Noise Impact Analysis 4 EXISTING NOISE LEVEL MEASUREMENTS To assess the existing noise level environment, 24-hour noise level measurements were taken at four locations in the Project study area. The receiver locations were selected to describe and document the existing noise environment within the Project study area. Exhibit 4-A provides the boundaries of the Project study area and the noise level measurement locations. To fully describe the existing noise conditions, noise level measurements were collected by Urban Crossroads, Inc. on Tuesday, February 26th, 2019. Appendix 4.1 includes study area photos. 4.1 MEASUREMENT PROCEDURE AND CRITERIA To describe the existing noise environment, the hourly noise levels were measured during typical weekday conditions over a 24-hour period. By collecting individual hourly noise level measurements, it is possible to describe the daytime and nighttime hourly noise levels and calculate the 24-hour CNEL. The long-term noise readings were recorded using Piccolo Type 2 integrating sound level meter and dataloggers. The Piccolo sound level meters were calibrated using a Larson -Davis calibrator, Model CAL 150. All noise meters were programmed in "slow" mode to record noise levels in "A" weighted form. The sound level meters and microphones were equipped with a windscreen during all measurements. All noise level measurement equipment satisfies the American National Standards Institute (ANSI) standard specifications for sound level meters ANSI 51.4-2014/IEC 61672-1:2013. (8) 4.2 NOISE MEASUREMENT LOCATIONS The long-term noise level measurements were positioned as close to the nearest sensitive receiver locations as possible to assess the existing ambient hourly noise levels surrounding the Project site. Both Caltrans and the FTA recognize that it is not reasonable to collect noise level measurements that can fully represent every part of a private yard, patio, deck, or balcony normally used for human activity when estimating impacts for new development projects. This is demonstrated in the Caltrans general site location guidelines which indicate that, sites must be free of noise contamination by sources other than sources of interest. Avoid sites located near sources such as barking dogs, lawnmowers, pool pumps, and air conditioners unless it is the express intent of the analyst to measure these sources. (4) Further, FTA guidance states, that it is not necessary nor recommended that existing noise exposure be determined by measuring at every noise -sensitive location in the project area. Rather, the recommended approach is to characterize the noise environment for clusters of sites based on measurements or estimates at representative locations in the community. (9) Based on recommendations of Caltrans and the FTA, it is not necessary to collect measurements at each individual building or residence, because each receiver measurement represents a group of buildings that share acoustical equivalence. (9) In other words, the area represented by the receiver shares similar shielding, terrain, and geometric relationship to the reference noise source. Receivers represent a location of noise sensitive areas and are used to estimate the future noise level impacts. Collecting reference ambient noise level measurements at the nearby 12356-04 Noise Study URBAN is CROSSROADS 215 Riverside Avenue Noise Impact Analysis sensitive receiver locations allows for a comparison of the before and after Project noise levels and is necessary to assess potential noise impacts due to the Project's contribution to the ambient noise levels. 4.3 NOISE MEASUREMENT RESULTS The noise measurements presented below focus on the average or equivalent sound levels (Leq). The equivalent sound level (Leq) represents a steady state sound level containing the same total energy as a time varying signal over a given sample period. Table 4-1 identifies the hourly daytime (7:00 a.m. to 10:00 p.m.) and nighttime (10:00 p.m. to 7:00 a.m.) noise levels at each noise level measurement location. Appendix 4.2 provides a summary of the existing hourly ambient noise levels described below: Location Ll represents the noise levels northwest of the Project site on Cliff Drive in an existing park near residential homes. The energy (logarithmic) average daytime noise level was calculated at 55.7 dBA Leq with an average nighttime noise level of 50.0 dBA Leq. Location L2 represents the noise levels within the existing parking lot at the Project site, south of existing residential homes. The energy (logarithmic) average daytime noise level was calculated at 54.8 dBA LeQ with an average nighttime noise level of 47.2 dBA 4, Location L3 represents the noise levels on northeast of the Project site on Riverside Avenue adjacent to an existing park. The energy (logarithmic) average daytime noise level was calculated at 63.2 dBA Leq with an average nighttime noise level of 59.6 dBA Le, Location L4 represents the noise levels east of the Project site on Ocean View Avenue adjacent to existing residential homes. The energy (logarithmic) average daytime noise level was calculated at 56.2 dBA Le, with an average nighttime noise level of 48.7 dBA LeQ. Table 4-1 provides the (energy average) noise levels used to describe the daytime and nighttime ambient conditions. These daytime and nighttime energy average noise levels represent the average of all hourly noise levels observed during these time periods expressed as a single number. Appendix 4.2 provides summary worksheets of the noise levels for each hour as well as the minimum, maximum, Ll, L2, Ls, LB, Les, Lso, L9o, L9s, and L99 percentile noise levels observed during the daytime and nighttime periods. The background ambient noise levels in the Project study area are dominated by the transportation -related noise associated the arterial roadway network. This includes the auto and heavy truck activities on study area roadway segments near the noise level measurement locations. The 24-hour existing noise level measurement results are shown on Table 4-1. 12356-04 Noise Study 16 O URBANCROSSROADS 9-70 215 Riverside Avenue Noise Impoct TABLE 4-1: 24-HOUR AMBIENT NOISE LEVEL MEASUREMENTS See Exhibit 4-A for the noise level measurement locations. Energy (logarithmic) average levels. The long-term 24-hour measurement worksheets are included in Appendix 4.2. Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m. 12356-04 Noise Study 17 O URBANCROSSROADS 9-71 Energy Average Location" Description Leveltioni dBA LYCNEL Daytime Nighttime Located northwest of the Project site on CliffLl Drive in an existing park near residential homes. 55.7 50.0 58.2 Located within the existing parking lot at theL2 Project site, south of existing residential homes. 54.8 47.2 56.3 Located northeast of the Project site onL3 Riverside Avenue adjacent to an existing park. 63.2 59.6 67.0 Located east of the Project site on Ocean ViewL4 Avenue adjacent to existing residential homes. 56.2 48.7 57.6 See Exhibit 4-A for the noise level measurement locations. Energy (logarithmic) average levels. The long-term 24-hour measurement worksheets are included in Appendix 4.2. Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m. 12356-04 Noise Study 17 O URBANCROSSROADS 9-71 215 Riverside Avenue Noise Impact Analysis EXHIBIT4-A: NOISE MEASUREMENT LOCATIONS Noise Measurement Locations 12356-04 Noise Study 18 URBAN 9-72 215 Riverside Avenue Noise Impact 5 METHODS AND PROCEDURES The following section outlines the methods and procedures used to model and analyze the noise levels due to Project operational activities. 5.1 REFERENCE OPERATIONAL NOISE LEVELS To estimate the Project operational noise levels, reference noise level measurements were collected from conservatively -representative types of activities to represent the noise levels expected with the development of the proposed Project. This section provides a description of the reference noise level measurements shown on Table 5-1 used to estimate the Project operational noise impacts. It is important to note that the following projected noise levels assume the worst-case noise environment with the roof -top air conditioning units and parking structure vehicle movements all operating continuously. These noise level impacts will likely vary throughout the day. TABLE 5-1: REFERENCE NOISE LEVEL MEASUREMENTS n 1-0-1 CU Uy Ul uall roNsroaas, Inc. on irurzuia at the aantee waimart iocatea at vu sown (.enter NarKway. Z As measured by Urban Crossroads, Inc. on 5/17/2017 at the Panasonic Avionics Corporation in the City of Lake Forest. 3 Reference noise levels at 50 feet represent the normalized noise source levels for comparison at a common distance. Calculated using the CadnaA noise model at the reference distance to the noise source. Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m. 5.1.1 ROOF -TOP AIR CONDITIONING UNITS To assess the impacts created by the roof -top air conditioning units at the Project buildings, reference noise levels measurements were taken over a four-day total duration at the Santee Walmart on July 27th, 2015. Located at 170 Town Center Parkway in the City of Santee, the noise level measurements describe mechanical roof -top air conditioning units on the roof of an existing Walmart store, in addition to background noise levels from additional roof -top units. The reference noise level represents Lennox SCA120 series 10 -ton model packaged air conditioning units. At 5 feet from the closest roof -top air conditioning unit, the highest exterior noise level from all four days of the measurement period was measured at 77.2 dBA Leq. Using the uniform reference distance of 50 feet, the noise level is 57.2 dBA Leq. The operating conditions of the reference noise level measurement reflect peak summer cooling requirements with measured temperatures approaching 96 degrees Fahrenheit ff) with average daytime temperatures of 82°F. This reference noise level measurement is anticipated to conservatively overstate the roof- top air conditioning unit noise levels of the Project since it represents the cooling equipment of a larger, commercial -retail box store. 12356-04 Noise Study 19 LS URBCROSSRAN 9-73 Reference Noise SoundTotalRef. Source Levels (dBA L.J PowerNoiseSourceDurationDistanceHeight I @'Ref. @ sohhanm:ss) (Feet) Feet) Level Distance Feee pWL)° Roof -Top Air Conditioning Units' 96:00:00 5' 4' 77.2 57.2 88.9 Parking Lot Vehicle Movements 01:00:00 10' 5' 52.2 38.2 1 69.9 n 1-0-1 CU Uy Ul uall roNsroaas, Inc. on irurzuia at the aantee waimart iocatea at vu sown (.enter NarKway. Z As measured by Urban Crossroads, Inc. on 5/17/2017 at the Panasonic Avionics Corporation in the City of Lake Forest. 3 Reference noise levels at 50 feet represent the normalized noise source levels for comparison at a common distance. Calculated using the CadnaA noise model at the reference distance to the noise source. Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m. 5.1.1 ROOF -TOP AIR CONDITIONING UNITS To assess the impacts created by the roof -top air conditioning units at the Project buildings, reference noise levels measurements were taken over a four-day total duration at the Santee Walmart on July 27th, 2015. Located at 170 Town Center Parkway in the City of Santee, the noise level measurements describe mechanical roof -top air conditioning units on the roof of an existing Walmart store, in addition to background noise levels from additional roof -top units. The reference noise level represents Lennox SCA120 series 10 -ton model packaged air conditioning units. At 5 feet from the closest roof -top air conditioning unit, the highest exterior noise level from all four days of the measurement period was measured at 77.2 dBA Leq. Using the uniform reference distance of 50 feet, the noise level is 57.2 dBA Leq. The operating conditions of the reference noise level measurement reflect peak summer cooling requirements with measured temperatures approaching 96 degrees Fahrenheit ff) with average daytime temperatures of 82°F. This reference noise level measurement is anticipated to conservatively overstate the roof- top air conditioning unit noise levels of the Project since it represents the cooling equipment of a larger, commercial -retail box store. 12356-04 Noise Study 19 LS URBCROSSRAN 9-73 215 Riverside Avenue Noise impact 5.2.2 PARKING STRUCTURE VEHICLE MOVEMENTS To determine the noise levels associated with parking structure vehicle movements, Urban Crossroads collected reference noise level measurements over a 24-hour period on May 17th, 2017 at the parking lot for the Panasonic Avionics Corporation in the City of Lake Forest. The peak hour of activity measured over the 24-hour noise level measurement period occurred between 12:00 p.m. to 1:00 p.m., or the typical lunch hour for employees working in the area. The measured, peak -hour reference noise level at 50 feet from the parking activity was measured at 38.2 dBA Leq. The parking activity noise levels are mainly due to cars pulling in and out of spaces during peak lunch hour activity and employees talking. This reference noise level measurement is anticipated to conservatively overstate the parking structure noise levels of the Project since it represents the parking activity associated with that of a larger, commercial office use with a greater number of parking spaces. 5.2.3 WORST -WE PROJECT OPERATIONAL NOISE LEVELS As previously indicated, it is important to note that the Project operational noise levels provided in this study assume a conservative estimation of the future noise environment, with the roof- top air conditioning units and parking structure vehicle movements all operating continuously, and simultaneously. Moreover, this analysis assumes that the highest reference noise source activity for all noise sources is operating every minute of every hour in a given day. Therefore, the analysis assumes no periods of inactivity, and assumes consistent operation across both daytime and nighttime hours. In reality, these noise level impacts will likely vary throughout the day. 5.2 CADNAA NOISE PREDICTION MODEL To fully describe the exterior operational noise levels from the 215 Riverside Avenue, Urban Crossroads, Inc. developed a noise prediction model using the CadnaA (Computer Aided Noise Abatement) computer program. CadnaA can analyze the noise level of multiple types of noise sources and calculates the noise levels at any location using the spatially accurate Project site plan and includes the effects of topography, buildings, and multiple barriers in its calculations using the latest standards to predict outdoor noise impacts. Using the spatially accurate Project site plan and flown aerial imagery from Nearmap, a CadnaA noise prediction model of the Project study area was developed. The noise model provides a three-dimensional representation of the Project study area using the following key data inputs: Ground absorption; Reflections at buildings and barriers; Reference noise level sources by type (area, point, etc.) and noise source height; Multiple noise receiver locations and heights; Barrier and building heights. 12356-04 Noise Study LlFo URBAN 20 CROSSROADS 9-74 215 Riverside Avenue Noise Impact Analysis Based on these data inputs, the CadnaA noise prediction model will calculate the distance from each noise source to the noise receiver locations, using the ground absorption, distance, and carrier/building attenuation inputs to provide a summary of noise level calculations at each receiver location and the partial noise level contributions by noise source. The reference sound power level (PWL) for the highest noise source expected at the Project site was input into the CadnaA noise prediction model. While sound pressure levels (e.g. LQ) quantify in decibels the intensity of given sound sources at a reference distance, sound power levels (PWL) are connected to the sound source and are independent of distance. Sound pressure levels vary substantially with distance from the source, and also diminish as a result of intervening obstacles and barriers, air absorption, wind, and other factors. Sound power is the acoustical energy emitted by the sound source and is an absolute value that is not affected by the environment. The sound power level used in this analysis has been calibrated in the noise prediction model to accurately describe the reference d8A L, -q noise levels. Based on the technical guidance provided for CadnaA, (10) the reference noise source is created in a separate CadnaA noise model with a receiver at the reference distance of the noise level measurement. The PWL of the noise source is then adjusted in the separate CadnaA noise model until the noise level at the given reference distance equals the measured reference noise level - The operational noise level calculations provided in this noise study account for the distance attenuation provided due to geometric spreading, when sound from a localized stationary source i.e., a point source) propagates uniformly outward in a spherical pattern. Soft site conditions are used in the operational noise analysis which result in noise levels that attenuate (or decrease) at a rate of 7.5 dBA for each doubling of distance from a point source, given the soft ground and vegetation between the Project site and adjacent sensitive receiver locations. Appendix 6.1 includes the CadnaA noise model inputs and calculation data. 12356-04 Norse Study zt L% URBAN 9-75 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study URBAN ZZ CROSSROADS 9-76 215 Riverside Avenue Noise Impact Analysis 6 OPERATIONAL IMPACTS This section analyzes the potential operational noise levels due to the Project's stationary noise sources at the adjacent residential and commercial receiver locations. Exhibit 6-A shows the noise source and receiver locations used to assess the Project -related operational noise levels generated by roof -top air conditioning units and parking structure vehicle movements. Based on the reference noise level measurements, previously described in Section 5.1, the Project operational stationary -source noise levels are estimated at each of the nearby receiver locations. All operational noise level calculations include the noise barrier attenuation provided by the planned parapet walls, Project building, existing buildings, and topography in the Project study area, as shown on Exhibit 6-A. Table 6-1 shows the Project -only noise levels at receiver locations R1 to R7 range from 26.7 to 48.2 dBA Leq based on the reference noise levels used in the analysis. At receiver locations R1 to R5, which represent noise -sensitive residential uses, the Project operational noise levels range from 26.7 to 48.2 dBA Ley, and are shown to satisfy the City of Newport Beach Municipal Code daytime 55 dBA Lett and nighttime 50 dBA Lel exterior noise level standards For residential uses. At receiver locations R6 and R7, which represent existing commercial uses, the Project operational noise levels range from 37.4 to 37.9 dBA Leq, and are shown to satisfy the City of Newport Beach Municipal Code daytime 65 dBA Leq and nighttime 66 dBA Leq exterior noise level standards for commercial uses. Therefore, the results of the analysis show that the Project - related operational noise levels associated with roof -top air conditioning units and parking structure vehicle movements will satisfy the City of Newport Beach Municipal Code daytime and nighttime base exterior noise level standards at the nearby noise -sensitive residential homes and adjacent commercial uses. As such, no additional exterior noise abatement measures (e.g., noise barriers) are required. TABLE 6-1: OPERATIONAL NOISE LEVEL COMPLIANCE Receiver Location' Land use Unmitigated Project Operational Noise Levels tdBA LX Threshold (dBA L J3 daytime NighttFme Threshold Exceeded? Daytime Nwtttime R1 Residential 28.4 55 50 No No R2 Residential 26.7 55 5o No No R3 Residential 45.5 55 So No No R4 Residential 48.2 55 so No No R5 Residential 40.8 55 50 No No R6 Commercial 37.9 65 60160 No No R7 Commercial 37.4 65 No No ICCn n -n rue LF PC rCLel VCP dr1L1 DEI ise sowce rocauons. Cad naA noise prediction model results are provided in Appendix 6.1. Exterior noise level standards (Table 3-1). Oay[ime" = 7:04 a.m. to 10:00 p.m.; " Nigh Wme" = 10;00 p.m, to 7;00 a. m. 22356-04 Noise Study 23 OURSAIM CROSSROADS 9-77 215 Riverside Avenue Noise EXHIBIT 6-A: OPERATIONAL NOISE SOURCE LOCATIONS LhUhNU: Operational Noise Level Contours (d BA Leq) Planned Noise Barrier (Parapet Wall) —45 — 50 — 55 — 60 Receiver Locations Operational noise level contours ore based on a recelver height of 5 feet above o ground elevation of Parking Structure Vehicle Movements approximately So feet Roof -Top Air Conditioning Units 12356-04 Noise 24 Lam URBAN j 215 Riverside Avenue Noise Impact Analysis 7 REFERENCES 1. City of Newport Beach. Municipal Code, Chapter 10.26 Community Noise Control. 2. California Department of Transportation Environmental Program. Technical Noise Supplement - A Technical Supplement to the Traffic Noise Analysis Protocol. Sacramento, CA : s.n., September 2013. 3. Environmental Protection Agency Office of Noise Abatement and Control. Information on Levels of Environmental Noise Requisite to Protect Public Health and Welfare with an Adequate Margin of Safety. March 1974. EPA/ONAC 550/9/74-004. 4. California Department of Transportation Environmental Program. Technical Noise Supplement - A Technical Supplement to the Traffic Noise Analysis Protocol. Sacramento, CA: s.n., September 2013. 5. U.S. Department of Transportation, Federal Highway Administration, Office of Environment and Planning, Noise and Air Quality Branch. Highway Traffic Noise Analysis and Abatement Policy and Guidance. June, 1995. 6. U.S. Department of Transportation Federal Transit Administration. Transit Noise and Vibration Impact Assessment Manual. September 2018. 7. U.S. Environmental Protection Agency Office of Noise Abatement and Control. Noise Effects Handbook -A Desk Reference to Health and Welfare Effects of Noise. October 1979 (revised July 1981). EPA 550/9/82/106. 8. American National Standards Institute (ANSI). Specification for Sound Level Meters ANSI51.4-2014/IEC 61672-1.2013. 9. U.S. Department of Transportation, Federal Transit Administration. Transit Noise and Vibration Impact Assessment. September 2018. 10. DataKustik. Technical Note: Calibrating Point Sources TN0301e. 2009. 11356-04 Noise Study LOl URBAN 25 CROSSROADS 9- 79 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study URBAN 26 CROSSROADS Mo 215 Riverside Avenue Noise Impact Analysis 8 CERTIFICATION The contents of this noise study report represent an accurate depiction of the noise environment and impacts associated with the 215 Riverside Avenue Project. The information contained in this noise study report is based on the best available data at the time of preparation. If you have any questions, please contact me directly at (949) 336-5979. Bill Lawson, P.E., INCE Principal URBAN CROSSROADS, INC. 260 East Baker Street, Suite 200 Costa Mesa, CA 92626 949) 336-5979 blawson@urbanxroads.com EDUCATION Oe jOFESSION 0 ARD F. UJ 3 rn No. TR 2537 rJ, q TRAFFIC P OF CALIFO/ Master of Science in Civil and Environmental Engineering California Polytechnic State University, San Luis Obispo • December, 1993 Bachelor of Science in City and Regional Planning California Polytechnic State University, San Luis Obispo • June, 1992 PROFESSIONAL REGISTRATIONS PE — Registered Professional Traffic Engineer—TR 2537 • January, 2009 AICP — American Institute of Certified Planners — 013011 • June, 1997—January 1, 2012 PTP — Professional Transportation Planner • May, 2007 — May, 2013 INCE — Institute of Noise Control Engineering • March, 2004 PROFESSIONAL AFFILIATIONS ASA — Acoustical Society of America ITE — Institute of Transportation Engineers PROFESSIONAL CERTIFICATIONS Certified Acoustical Consultant —County of Orange • February, 2011 FHWA-NHI-142051 Highway Traffic Noise Certificate of Training • February, 2013 12356-04 Noise Study 27 A, LO URBAN 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study URBAN 28 CROSSROADS 215 Riverside Avenue Noise Impact Analysis APPENDIX 3.1: CITY OF NEWPORT BEACH MUNICIPAL CODE 12356.04 Noise Study (1 URBAN 29 CROSSROADS 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study O URBAN 30 CROSSROADS 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL 119 hits) Chapter 10.26 COMMUNITY NOISE CONTROL Sections: 10.26.005 Declaration of Policy. 10.26.010 Definitions. 10.26.015 Decibel Measurement Criteria. 10.26.020 Designated Noise Zones. 10.26.025 Exterior Noise Standards. 10.26.030 Interior Noise Standards. 10.26.035 Exemptions. 10.26.040 Schools, Day Care Centers, Churches, Libraries, Museums, Health Care Institutions—Special Provisions. 10.26.045 Heating, Venting and Air Conditioning—Special Provisions. 10.26.050 Sound -Amplifying Equipment. 10.26.055 Noise Level Measurement. 10.26.065 Proposed Developments. 10.26.070 Prima Facie Violation. 10.26.075 Violations. 10.26.080 Violations—Additional Remedies—Injunctions. 10.26.085 City Manager Waiver. 10.26.090 Noise Abatement Programs. 10.26.095 Manner of Enforcement. 10.26.100 Severability. 10.26.005 Declaration of Policy. A. In order to control unnecessary, excessive and annoying noise in the City of Newport Beach, it is declared to be the policy of the City to prohibit such noise generated from or by all sources as specified in this chapter. B. It is determined that certain noise levels are detrimental to the public health, welfare and safety and contrary to public interest, therefore, the City Council of the City of Newport Beach does ordain and declare that creating, maintaining, causing or allowing to be created, caused or maintained, any noise in a manner prohibited by, or not in conformity with, the provisions of this chapter, is a public nuisance and may be punished as a public nuisance. The ordinance codified in this chapter is effective thirty (30) days from adoption, however, all fixed noise sources existing at the date of adoption shall have ninety (90) days from the date of adoption to achieve compliance with this chapter. (Ord. 95-38 § 11 (part), 1995) 10.26.010 Definitions. The following words, phrases and terms as used in this chapter shall have the meanings as indicated here: Agricultural property" means a parcel of real property which is undeveloped for any use other than agricultural purposes. Ambient noise level" means the all-encompassing noise level associated with a given environment, being a composite of sounds from all sources, excluding the alleged offensive noise, at the location and approximate time at which a comparison with the alleged offensive noise is to be made. 31 haps://www.codepublishing.com/CA/NewportBeach/ 719 S 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL A -weighted sound level" means the total sound level meter with a reference pressure of twenty (20) micropascals using the A -weighted network (scale) at slow response. The unit of measurement shall be defined as DBA. Code Enforcement Officer" means the Code Enforcement Officer of the City or his duly authorized deputy. Commercial property" means a parcel of real property which is used as either in part or in whole for commercial purposes. Cumulative period" means an additive period of time composed of individual time segments which may be continuous or interrupted. Decibel (Db)" means a unit which denotes the ratio between two quantities which are proportional to power: the number of decibels corresponding to the ratio of two amounts of power is ten times the logarithm to the base ten of this ratio. Dwelling unit" means any area within a structure on any parcel which: 1. Contains separate or independent living facilities for one or more persons, with an area or equipment for sleeping, sanitation and food preparation, and which has independent exterior access to ground level; or 2. Is being utilized for residential purposes by one or more persons separately or independently from occupants of other areas within the structure. Emergency machinery, vehicle, work or alarm" means any machinery, vehicle, work or alarm used, employed, performed or operated in an effort to protect, provide or restore safety conditions in the community or for the citizenry, or work by private or public utilities when restoring utility service. Equivalent, noise, level, [eq." means the sound level corresponding to a steady state noise level over a given measurement period with the same amount of acoustic energy as the actual time varying noise level. Also known as the energy average noise level during the measurement period. The measurement period shall be fifteen (15) minutes under the terms of this chapter. Fixed noise source" means a stationary device which creates sounds while fixed or motionless including but not limited to residential, agricultural, industrial and commercial machinery and equipment, pumps, fans, compressors, air conditioners and refrigeration equipment. Grading" means any excavating of filling of earth material or any combination thereof conducted at a site to prepare said site for construction or other improvements thereon. Health care institution" means any hospital, convalescent home or other similar facility excluding residential. Hertz (HZ)" means the unit which describes the frequency of a function periodic in time which is the reciprocal of the period. Impulsive noise" means a noise of short duration usually less than one second and of high intensity, with an abrupt onset and rapid decay. Industrial property" means a parcel of real property which is used either in part or in whole for manufacturing purposes. Intruding noise level" means the total sound level, in decibels, created, caused, maintained or originating from an alleged offensive source at a specified location while the alleged offensive source is in operation. Licensed" means the issuance of a formal license or permit by the appropriate jurisdictional authority, or where no permits or licenses are issued, the sanctioning of th 3ytivity by the jurisdiction as noted in public record. https://www.Godepublishing.com/CA/NewportBeach/ 2/9 0 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL Major roadway" means any street, avenue, boulevard or highway used for motor vehicle traffic which is owned or controlled by a public government entity. Mobile noise source" means any noise source other than a fixed noise source. Person" means any individual, firm, partnership, association, corporation, company or organization of any kind, including public agencies. Residential property" means a parcel of real property which is used either in part or in whole for residential purposes, other than transient uses such as hotels and motels, and residential care facilities_ Residential property includes the residential portion of mixed use properties. Simple tone noise" means a noise characterized by a predominant frequency or frequencies so that other frequencies cannot be readily distinguished. If measured, simple tone noise shall exist if the one-third octave band sound pressure levels in the band with the tone exceeds the arithmetic average of the sound pressure levels of the two continuous one-third octave bands as follows: five Db for frequencies of five hundred (500) Hertz Hz) and above or, by fifteen (15) Db for frequencies less than or equal to one hundred twenty-three (123) Hz. Sound level meter" means an instrument meeting American National Standard Institute's Standard S1.4-1971 or most recent revision thereof for Type 2 sound level meters or an instrument and the associated recording and analyzing equipment which will provide equivalent data. Sound pressure level" of a sound, in decibels, means twenty (20) times the logarithm to the base ten of the ratio of the pressure of the sound to a reference pressure which shall be explicitly stated. Vibration" means any movement of the earth, ground or other similar surface created by a temporal and spatial oscillation device or equipment located upon, affixed in conjunction with that surface. (Ord. 95-38 § 11 (part), 1995) 10.26.015 Decibel Measurement Criteria. Any decibel measurement made pursuant to the provisions of this chapter shall be based on a reference sound pressure of twenty (20) micropascals as measured with a sound level meter using the A -weighted network (scale) at slow response. (Ord. 95-38 § 11 (part), 1995) 10.26.020 Designated Noise Zones. The properties hereinafter described assigned to the following noise zones: Noise Zone I — All single-, two- and multiple -family residential properties; Noise Zone II — All commercial properties; Noise Zone III — The residential portion of mixed-use properties; Noise Zone IV — All manufacturing or industrial properties. The actual use of the property shall be the determining factor in establishing whether a property is in Noise Zone I, II, III or IV provided that the actual use is a legal use in the City of Newport Beach. (Ord. 95-38 § 11 (part), 1995) 10.26.025 Exterior Noise Standards. 33 https://www.codepublishing.com/CA/Newport8each/ 3/9 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL A. The following noise standards, unless otherwise specifically indicated, shall apply to all property with a designated noise zone: NOISE TYPE OF LAND ZONE USE I Single-, two -or multiple -family residential II Commercial III Residential portions of mixed-use properties IV Industrial or manufacturing ALLOWABLE EXTERIOR NOISE LEVEL (Equivalent Noise Level, Leq) 7 a.m. to 10 p.m. 55 DBA 65 DBA 60 DBA 70 DBA 10 p.m. to 7 a.m. 50 DBA 60 DBA 50 DBA 70 DBA If the ambient noise level exceeds the resulting standard, the ambient shall be the standard. B. It is unlawful for any person at any location within the incorporated area of the City to create any noise, or to allow the creation of any noise on property owned, leased, occupied or otherwise controlled by such person, which causes the noise level when measured on any other property, to exceed either of the following: 1. The noise standard for the applicable zone for any fifteen -minute period; 2. A maximum instantaneous noise level equal to the value of the noise standard plus twenty (20) DBA for any period of time (measured using A -weighted slow response). C. In the event the ambient noise level exceeds the noise standard, the maximum allowable noise level under said category shall be increased to reflect the maximum ambient noise level. D. The Noise Zone III standard shall apply to that portion of residential property falling within one hundred (100) feet of a commercial property, if the intruding noise originates from that commercial property. E. If the measurement location is on boundary between two different noise zones, the lower noise level standard applicable to the noise zone shall apply. (Ord. 95-53 § 1, 1995; Ord. 95-38 § 11 (part), 1995) 10.26.030 Interior Noise Standards. A. The following noise standard, unless otherwise specifically indicated, shall apply to all residential property within all noise zones: NOISE TYPE OF LAND ZONE USE I Residential hftps://www.codepublishing.corrVCA/NewportBeach/ ALLOWABLE INTERIOR NOISE LEVEL (Equivalent Noise Level, Leq) 7 a.m. to 10 p.m. 45 DBA 34 10 p.m. to 7 a.m. 40 DBA 4/9 N M., 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL III Residential 45 DBA 40 DBA portions of mixed-use properties If the ambient noise level exceeds the resulting standard, the ambient shall be the standard. B. It shall be unlawful for any person at any location within the incorporated area of the City to create any noise or to allow the creation of any noise on property owned, leased, occupied or otherwise controlled by such a person which causes the noise level when measured on any other property, to exceed either of the following: 1. The noise standard for the applicable zone for any fifteen -minute period; 2. A maximum instantaneous noise level equal to the value of the noise standard plus twenty (20) DBA for any period of time (measured using A -weighted slow response). C. In the event the ambient noise level exceeds the noise standard, the noise standard applicable to said category shall be increased to reflect the maximum ambient noise level. D. The Noise Zone III standard shall apply to that portion of residential property falling within one hundred (100) feet of a commercial property, if the intruding noise originates from that commercial property. E. If the measurement location is on a boundary between two different noise zones, the lower noise level standard applicable to the noise zone shall apply. (Ord. 95-53 § 2, 1995; Ord. 95-38 § 11 (part), 1995) 10.26.035 Exemptions. The following activities shall be exempted from the provisions of this chapter: A. Any activity conducted on public property, or on private properly with the consent of the owner, by any public entity, or its officers, employees, representatives, agents, subcontractors, permittees, licensees, or lessees, which are consistent with, and in furtherance of, the govemmental functions or services the public entity has authorized, or responsible, to perform, activities which are exempt from the provisions of this chapter include, without limitation, sporting and recreational activities which are sponsored or co-sponsored by the City of Newport Beach or the Newport Mesa Unified School District; B. Occasional outdoor gatherings, public dances, show, sporting and entertainment events, provided said events are conducted pursuant to a permit or license issued by the appropriate jurisdiction relative to the staging of said events; C. Any mechanical device, apparatus or equipment used, related to or connected with emergency machinery, vehicle, work or warning alarm or bell, provided the sounding of any bell or alarm on any building or motor vehicle shall terminate its operation within forty-five (45) minutes in any hour of its being activated; D. Noise sources associated with construction, repair, remodeling, demolition or grading of any real property. Such activities shall instead be subject to the provisions of Chapter 10.28 of this title; E. Noise sources associated with construction, repair, remodeling, demolition or grading of public rights-of-way or during authorized seismic surveys; F. All mechanical devices, apparatus or equipment associated with agriculture operations provided that: 1. Operations do not take place between eight p.m. and seven a.m. on weekdays, including Saturday, or at any time Sunday or a federal holiday, or 35 https://www.codepublishing.com/CA/NewportBeach/ 5/9 M• 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL 2. Such operations and equipment are utilized for the protection or salvage of agricultural crops during periods of potential or actual frost damage or other adverse weather conditions, or 3. Such operations and equipment are associated with agricultural pest control through pesticide application, provided the application is made in accordance with permits issued by or regulations enforced by the California Department of Agriculture; G. Noise sources associated with the maintenance of real property. Such activities shall instead be subject to the provisions of Chapter 10.28 of this title; H. Any activity to the extent regulation thereof has been preempted by state or federal law. NOTE: Preemption may include motor vehicle, aircraft in flight, and railroad noise regulations; I. Any noise sources associated with people and/or music associated with a party at a residential property. Such noise is difficult to measure under the terms of this chapter and instead shall be subject to the provisions of Chapters 10.28 and 10.58 of this title; J. Any noise sources associated with barking dogs or other intermittent noises made by animals on any properly within the City of Newport Beach. Such noise is difficult to measure under the terms of this chapter and instead shall be subject to the provisions of Chapter 7.20 of this Code; K. Any noise sources associated with the operation of a permanently installed heating, venting and air conditioning (HVAC) equipment on a residential property permitted under the provisions of Section 10.26.045(8) and (C); L. Any noise sources specifically identified and mitigated under the provisions of a use permit, modification permit, development agreement or planned community district development plan adopted prior to the date of adoption of this chapter. (Ord. 95-53 § 3, 1995; Ord. 95-38 § 11 (part), 1995) 10.26.040 Schools, Day Care Centers, Churches, Libraries, Museums, Health Care Institutions Special Provisions. It is unlawful for any person to create any noise which causes the noise level at any school, day care center, hospital or similar health care institution, church, library or museum while the same is in use, to exceed the noise standards specified in Section 10.26.025 prescribed for the assigned Noise Zone I (residential uses). (Ord. 95-38 11 (part), 1995) 10.26.045 Heating, Venting and Air Conditioning—Special Provisions. A. New HVAC Equipment. New permits for heating, venting and air conditioning (HVAC) equipment in or adjacent to residential areas shall be issued only where installations can be shown by computation, based on the sound rating of the proposed equipment, not to exceed an A -weighted sound pressure level of fifty (50) DBA or not to exceed an A -weighted sound pressure level of fifty-five (55) dBA and be installed with a timing device that will deactivate the equipment during the hours of ten p.m. to seven a.m. The method of computation used shall be that specified in "Standard Application of Sound Rated Outdoor Unitary Equipment," Standard 275, Air conditioning and Refrigeration Institute, 1984 or latest revision thereof. B. Existing HVAC Equipment. 1. HVAC equipment legally installed prior to April 22, 1981, shall be permitted to operate with an exterior noise limit of sixty-five (65) dBA until January 1, 1998. 2. HVAC equipment legally installed prior to April 22, 1981, shall be exempted from the interior noise level standard as specified in Section 10.26.030 of this chapter until January 1, 1998. 36 https://www.codepublishing.com/CA/Newpor(Beach/ 6/9 0 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL 3. HVAC equipment legally installed after April 22, 1981, and prior to the date of adoption of this chapter shall not exceed a maximum exterior noise limit of fifty-five (55) dBA during the ninety -day compliance period set forth in Section 10.26.005. C. In the event that HVAC equipment cannot meet the requirements set forth in this chapter, then the exterior noise limit for such equipment may be raised to sixty-five (65) dBA and exempted from the interior noise level standard as specified in Section 10.26.030 of this chapter, provided that the applicant obtains the written consent of all the owners of the affected properties. (Ord. 95-38 § 11 (part), 1995) 10.26.050 Sound -Amplifying Equipment. Loudspeakers, sound amplifiers, public address systems or similar devices used to amplify sounds shall be subject to the provisions of Chapter 10.32 of this title. Such sound -amplifying equipment shall not be construed to include electronic devices, including but not limited to, radios, tape players, tape recorders, compact disc players, electric keyboards, music synthesizers, record players or televisions, which are designed and operated for personal use, or used entirely within a building and are not designed or used to convey the human voice, music or any other sound to an audience outside such building, or which are used in vehicles and heard only by occupants of the vehicle in which installed, which shall be subject to the provisions of Chapter 10.28 of this title. (Ord. 95-38 11 (part), 1995) 10.26.055 Noise Level Measurement. I.,.......... A. The location selected for measuring exterior noise levels in a residential area shall be at any part of a private yard, patio, deck or balcony normally used for human activity and identified by the owner of the affected property as suspected of exceeding the noise level standard. This location may be the closest point in the private yard or patio, or on the deck or balcony, to the noise source, but should not be located in nonhuman activity areas such as trash container storage areas, planter beds, above or contacting a property line fence, or other areas not normally used as part of the yard, patio, deck or balcony. The location selected for measuring exterior noise levels in a nonresidential area shall be at the closest point to the noise source. The measurement microphone height shall be five feet above finish elevation or, in the case of a deck or balcony, the measurement microphone height shall be five feet above the finished floor level. B. The location selected for measuring interior noise levels shall be made within the affected residential unit. The measurements shall be made at a point at least four feet from the wall, ceiling or floor, or within the frame of a window opening, nearest the noise source. The measurements shall be made with windows in an open position_ Ord. 95-38 § 11 (part), 1995) 10.26.065 Proposed Developments. Each department whose duty it is to review and approve new projects or changes to existing projects that result or may result in the creation of noise shall consult with the Code Enforcement Officer prior to any such approval. If at any time the Code Enforcement Officer has reason to believe that a standard, regulation, action, proposed standard, regulation or action of any department respecting noise does not conform to the provisions as specified in this chapter, the Code Enforcement Officer may request such department to consult with him on the advisability of revising such standard or regulation to obtain uniformity_ (Ord. 95-38 § 11 (part), 1995) 10.26.070 Prima Facie Violation. Any noise exceeding the noise level standard as specified in Section 10.26.025 and 10.26.030 of this chapter, shall be deemed to be prima facie evidence of a violation of the provisions of this chapter. (Ord. 95-38 § 11 (part), 1995) 10.26.075 Violations. 37 https:iiwww.codepublishing.com/CA/NewportBear-hi 7/9 9-91 2114/2019 Chapter 10.26 COMMUNITY NOISE CONTROL Any persons violating any of the provisions of this chapter shall be deemed guilty of an infraction. (Ord. 95-38 § 11 (part), 1995) 10.25.080 Violations—Additional Remedies—Injunctions. A. As an additional remedy, the operation or maintenance of any device, instrument, vehicle or machinery in violation of any provisions of this chapter which operation or maintenance causes or creates sound levels exceeding the allowable standards as specified in this chapter shall be deemed and is declared to be a public nuisance and may be subject to abatement summarily by a restraining order or injunction issued by a court of competent jurisdiction. B. Any violation of this chapter is declared to be a public nuisance and may be abated in accordance with law. The expense of this chapter is declared to be public nuisance and may be by resolution of the City Council declared to be a lien against the property on which such nuisance is maintained, and such lien shall be made a personal obligation of the property owner. (Ord, 95-38 § 11 (part), 1995) 10.26.085 City Manager Waiver. The City Manager is authorized to grant a temporary waiver to the provisions of this chapter for a period of time not to exceed thirty (30) days if such temporary waiver would be in the public interest and there is no feasible and prudent altemative to the activity, or the method of conducting the activity, for which the temporary waiver is sought. (Ord. 95-38 § 11 (part), 1995) 10.26.090 Noise Abatement Programs. A. In circumstances which adopted community -wide noise standards and policies prove impractical in controlling noise generated from a specific source, the City Council may establish a noise abatement program which recognizes the characteristics of the noise source and affected property and which incorporates specialized mitigation measures. B. Noise abatement programs shall set forth in detail the approved terms, conditions and requirements for achieving maximum compliance with noise standards and policies. Said terms, conditions and requirements may include, but shall not be limited to, limitations, restrictions, or prohibitions on operating hours, location of operations, and the types of equipment, (Ord. 95-38 § 11 (part), 1995) 10.26.095 Manner of Enforcement, A. The City Code Enforcement Officer is directed to enforce the provisions of this chapter and may issue citations for any violation of the provisions of this chapter or violations of this chapter may be prosecuted or enforced in the same manner as other infractions pursuant to this Code; provided, however, that in the event of an initial violation of the provisions of this chapter, a written notice may be given to the alleged violator which specifies the time by which the condition shall be corrected. B. No person shall interfere with, oppose or resist any authorized person charged with the enforcement of this chapter while such person is engaged in the performance of his/her duty. C. In the event the alleged violator cannot be located in order to serve any notice, the notice shall be deemed to be given upon mailing such notice by registered or certified mail to the alleged violator at his last known address or at the place where the violation occurred in which event the specified time period for abating the violation or applying for a variance shall commence at the date of the day following the mailing of such notice. {Ord. 95-38 § 11 (part), 1995) 10.26.100 Severability, 38 lltlps:flwww.codepublishing.cam/GNNewportBeach/ 819 9-92 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL If any provision, clause, sentence, or paragraph of this chapter, or the application thereof to any person or circumstance shall be held invalid, such invalidity shall not affect the other provisions of this chapter which can be given effect without the invalid provisions or application and, to this end, the provisions of this chapter are hereby declared to be severable. (Ord. 95-38 § 11 (part), 1995) The Newport Beach Municipal Code is current through Ordinance 2018-19, and legislation passed through December 11, 2018. Disclaimer: The City Clerk's Office has the official version of the Newport Beach Municipal Code. Users should contact the City Clerk's Office for ordinances passed subsequent to the ordinance cited above. 39 https://www.codepublishing.com/CA/NewportBeach/ 919 9-93 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study L'I1 URBAN 40 CROSSROADS J 215 Riverside Avenue Noise Impact Analysis APPENDIX 4.1: STUDY AREA PHOTOS 12356-04 Noise Study URBAN 41 CROSSROADS 9-95 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study LO URBAN 42 CROSSROADS 71 A hi 6 i Rpy . G Y ! X45 MA 3 u T? 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A N lD W' N.: W'. y A lA y A 00 W W 0 S£ Q'Ot7 O GDOSt_ O'SS< i 0'09 0 sq 0'0L c O.SL y 0'08 " 0155 age5 a as6fouy VOP 9SEZT Nf 1010»ld aaakV sawoy lelauaplsaj peau Ted 8ullslxa aplsian!2 STZ afad ue ul anlJl u0 a is af0 a o sam ;iou a1eoodIJ ] 3 d 43d 3 4 P 1 -Tl 90J07 6TOZ'9Z Aienjgaj'Aepsanl aaop 9-103 U: E Uclobs L 12100-12500L 12300E 123561 Fieldwork E 12356_ L2_Summary 50 URBAN CROSSROADS 9-104 24 -Hour Noise Level Measurement Summary Date: Tuesday,FebruaryN 26, 2019 Location: L2 - Located within the existing parking structure at the Project: 215 Riverside Meter: Project site, south of existing residential homes. Piccolo I JN: 12356 Houdy L_ dBA Readings (unadjusted) Analyst: R.Saber 85.0 80.0 m 75.0 v 70.0 Q 65.0 2 60.0 a 55.0 5 50.0 45.0 ut 40.0 v O u1 v v N O v a H v OI t D lD {p n N n m ul Emin - ut - Ln 'ri ^ a V 35.0 Ln Ln Ln Ln Ln v v 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Hour Beginning 0 1 43(5 43:0 53.4 56.3 38:5 ` 38:5 4910 4910 L50% 0• 4.70 4 0 !rift D ;: 46 0 0 tl 0 ' 407p I 40.,'0,40;0 40.0' 43.5 10:0 53:5 Night 2 3 41.5 41.2 59.0 55.1 38.5 39:9 48.0 4510 46:0 44 03i r FS 4'"4dOr 10gr 1 ., x 40 d 38,d Ot W 4t1*tl. 40j0 38.0 40.0 38:0 38:0 40:0 43.0 41.5 41:2 10;0 10.0 10:0 53:0 51:5 51,2447.6 S 47.1 71.2 65.7 40.2 41.6 59.0 540 54 0 40.0 52 0 5tl Jf4Eb { 1 45 tl 430 43:0 40.0 43.0 47,6 10:0 57.6 6 52.9 66.4 45.1 63:0 61.0 0 _._ ;u5t r,`r, : y `4040. __, __ 4 i) 47.0 46.0 47.1 52.9 10:0 10.0 57.1 62.97 8 56.2 69.4 46.7 64.0 63.0 61.0 60.0 57.0 52.0 49.0 48.0 47.0 56.2 0.0 56.2 9 56.7 70.0 44.0 65.0 64.0 62.0 60.0 57.0 53.0 47.0 46.0 45.0 56.7 0.0 56.7 10 54.9 56.5 69.2 68.4 43.6 44.9 63.0 64.0 62.0 63.0 60.0 59.0 55.0 52.0 47.0 61.0 60.0 57.0 54.0 46.0 45.0 54.9 0.0 54.9 11 55.0 68.4 44.6 62.0 61.0 48.0 59.0 58.0 56.0 52.0 48.0 47.0 47.0 46.0 46.0 56.5 55.0 0.0 0.0 56.5 55.0 Day 12 13 54.1 56.6 73.1 75.5 44.0 45.1 61.0 67.0 60.0 62.0 58.0 57.0 54.0 51.0 48.0 60.0 59.0 56.0 47.0 45.0 54.1 0.0 54.1 14 53.7 67.3 44.3 62.0 60.0 53.0 50.0 58.0 57.0 54.0 51.0 47.0 49.0 46.0 47.0 45.0 56.6 53.7 0.0 0.0 56.6 53.71555.3 76.8 45.1 64.0 63.0 60.0 58.0 53.0 51.0 48.0 47.0 46.0 55.3 0.0 55.316 17 55.0 54.3 73.2 70.3 45.9 45.4 63.0 62.0 61.0 60.0 59.0 58.0 55.0 53.0 49.0 58.0 57.0 54.0 49.0 47.0 55.0 0.0 55.0 18 54.1 1 73.2 44.3 61.0 1 60.0 52.0 49.0 58.0 57.0 53.0 51.0 48.0 48.0 48.0 46.0 46.0 54.3 54.1 0.0 0.0 54.3 54.1 Evening 19 20 54.1 51.7 69.3 71.2 44.7 40.3 63.0 62.0 62.0 60.0 59.0 57.0 53.0 50.0 47.0 57.0 54.0 50.0 46.0 45.0 54.1 5.0 59.1 21 48.2 68.4 38.5 58.0 55.0 48.0 44.0 52.0 51.0 47.0 44.0 41.0 43.0 40.0 41.0 40.0 51.7 48.2 5.0 5.0 56.7 53.2 Night 22 47.7 69,1 401 55:0 53 0 '`53 r : ` tlFs ' `4'0 y ,< 41 tl 410 40.0 47,7 10:0 57.72345.4 61,0: 41.2 , 52;p: -51,0_ •. " 5 ' b t'' '' C 42:0::. 41:0 45..4--- ; 1tl,0_ : 55 4' Day Min 53.7 67.3 43.6 61.0 60.0 58.0 57.0 53.0 51.0 47.0 46.0 45.0 Max 56.7 76.8 46.7 67.0 64.0 62.0 60.0 57.0 54.0 50.0 49.0 47.0 Energy Average 55.3 Average: 63.2 61.6 59.5 58.3 55.1 52.1 48.2 47.3 45.9 53.2 54.8 47,2Evening Min 48.2 68.4 38.5 58.0 55.0 52.0 51.0 47.0 44.0 41.0 40.0 40.0 Max 54.1 71.2 44.7 63.0 62.0 59.0 57.0 53.0 50.0 47.0 46.0 45.0 Energy Average 52.0 Average: 61.0 59.0 56.0 54.0 50.0 47.3 44.0 43.0 42.0 56.3 Night Min Max 41.2 52.9 53.4 71.2 38.5 45.1 45.0 63:0. 44 0 610 43 0t f . 3 SB tl 2y0 4""$$i_. 10' y 4tl D aOltl 380' y 171tl 41,3 38.d 47, 0. 41,2' 38:0 46.0 40:6 Energy Average 47.2 Average!52.7 50 7 43:9 . _. U: E Uclobs L 12100-12500L 12300E 123561 Fieldwork E 12356_ L2_Summary 50 URBAN CROSSROADS 9-104 O URBANU: lUcJobsL 12100-12500L 12300 12356 j FieldwarkS 12356- L3_Summory 51 CROssROsans 9-105 24 -Hour Date: Tuesday,Februaryry 26, 2019 Location: L3 - Located northeast of the Project site on Riverside Avenue Project: 215 Riverside adjacent to an existing park. Meter: Piccolo I JN: 12356 Hourly L dBA Readings (unadjusted) Analyst: R.5aber 85.0 80.0 M 75.0 0 70.0 e 65.0 2 60.0 to T I 55.0 0 45.050.0 ti N n a, r4 N v;- u S --1 m --a n n -'^--m N D - -'°- -- -- _ -i- F n i- C n n to 40.D 35.0 T- r- Ln L L 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Hour Beginning 0, 0. 0 52:1 7Z.3 38.8° 61d' i9,0DFfO s51D 390 39,0' 38:0 52:1 10.0 62.1151172.0 38.7 60;0 58 D S'hi , 670 9040 39701 39.0' 38.0 51.2 10:0 61.2 Night 2 3 50.2 49.4 72.6 73.1 37.4 38.9 60.0 59 D 58p0 !y 5i3O' i0 4040 di ' ` 3970 38.0 38.0 50.2 10.0 60.2 63.0 59,0 S QD 0 39 0 39.0 39:0 49:4: 10,0 59.4457.7 72.1 40.6 b8.0 b7.0 64 0 x6240' d8 0 43,0' 42,0 40:0 57.7 10.0 67.7562183.1 42.8 71.0 69.0 6 Q 68 0' 67iD j i6libr t8; 4- 11 47.0' 45.0 44.0 621 10.0 72.2666.6 77.8 45.3 74.0 _ 73.0 710 ._ ` - O Oi" `6< 40 __6410 , _' : ,.52'0. :: 49.0 48.0 66.6 10.0 76.6766.1 85.5 43.6 74.0 72.0 70.0 70.0 67.0 63.0 54.0 51.0 46.0 66.1 0.0 66.1865.1 80.8 43.7 73.0 71.0 70.0 69.0 66.0 62.0 53.0 50.0 45.0 65.1 0.0 65.1963.1 80.3 43.7 71.0 69.0 68.0 67.0 64.0 59.0 50.0 49.0 46.0 63.1 0.0 63.1 10 63.5 78.3 42.7 70.0 69.0 68.0 67.0 64.0 61.0 52.0 50.0 46.0 63.5 0.0 63.51164.4 81.4 43.8 72.0 70.0 69.0 68.0 65.0 62.0 53.0 50.0 46.0 64.4 0.0 64.4 Day 12 64.3 88.2 44.4 71.0 69.0 68.0 67.0 64.0 61.0 52.0 50.0 47.0 64.3 0.0 64.31362.7 90.2 41.9 69.0 68.0 66.0 65.0 63.0 59.0 51.0 48.0 45.0 62.7 0.0 62.71461.5 77.1 43.7 68.0 67.0 66.0 65.0 62.0 59.0 52.0 50.0 47.0 61.5 0.0 61.51562.8 82.1 48.1 69.0 68.0 66.0 65.0 63.0 61.0 55.0 53.0 51.0 62.8 0.0 62.81663.2 82.4 46.2 70.0 69.0 67.0 66.0 64.0 61.0 54.0 52.0 49.0 63.2 0.0 63.2 17 63.7 82.4 40.6 71.0 70.0 68.0 67.0 65.0 61.0 51.0 48.0 45.0 63.7 0.0 63.71861.7 1 74.8 41.7 69.0 1 68.0 67.0 66.0 1 63.0 58.0 1 48.0 46.0 43.0 61.7 0.0 61.71961.0 81.3 39.8 69.0 68.0 66.0 65.0 61.0 55.0 44.0 43.0 41.0 61.0 5.0 66.0Evening2060.7 86.1 38.9 70.0 69.0 66.0 65.0 58.0 51.0 41.0 40.0 39.0 60.7 5.0 65.72157.7 76.5 38.9 69.0 67.0 64.0 62.0 53.0 47.0 41.0 40.0 40.0 57.7 5.0 62.7 Night 22 23 56.7 55.6. 75:0 73.3 45x1 67:0 66 0 62x04 n6Q7D _ 0 r :_51y0 48,0' ;'. 47.0 4640 56.7 10.0 66.7 45.1 _ 6670......-.47.0 55.6 .;'._.-.10,0 65.6. MEMO. Day Min 61.5 74.8 40.6 68.0 67.0 66.0 65.0 62.0 46.0 43.058.0 48.0 Max 66.1 90.2 48.1 74.0 1 72.0 70.0 70.0 1 67.0 63.0 55.0 53.0 51.0 Energy Average 63.7 Average: 70.6 1 69.2 67.8 66.8 64.2 60.6 52.1 49.8 46.3 62.1 63.2 59.6Evening Min 57.7 76.5 1 38.9 69.0 67.0 64.0 62.0 53.0 47.0 41.0 40.0 39.0 Max 61.0 86.1 39.8 70.0 69.0 1 66.0 65.0 61.0 55.0 44.0 43.0 41.0 Energy Average 60.0 Average: 69.3 68.D 65.3 64,0 57,3 51.0 42.0 41.0 40.0 Night Min Max 49.4 66.6 72.0 83,1 37:4 45.3 60.0 74.0 58 0 73 0 52{0 X14 46CD z' X010 f59+1 ' ,{-- t45 68)qe 53'? ., 40 0 6430 48,6 _ , 39 0 52 0. , ,' 44.0 3810' 49.0 43.0' 38.0 48.0 42.0 G V • O EnergyAverage 59.6 Average: 65.6 63.7 60.6. _ O URBANU: lUcJobsL 12100-12500L 12300 12356 j FieldwarkS 12356- L3_Summory 51 CROssROsans 9-105 U: Uclobsl_12100-12500112300`12356 Fieldwork 12356_L4_Summary 52 O uRBnNCROSSROADS 24 -Hour Noise Level Measurement Summary Dote: Tuesday,FebruaryY 26, 2019 Location: L4 - Located east of the Project site on Ocean View Avenue Project: 215 Riverside adjacent to existing residential homes. Meter: Piccolo I IN: 12356 s• Analyst: R. Saber 85.0 80.0 Co 75.0 a 70.0 Q 65.0 60.0 a 55.0 Cn O 40.E l0 M O n ti C v7 Cr 117, N: Ln N -'-_ ^- - - O V7 m -- VI - at 10 _ of _ LM 10 NO O 10 Ol 00 o o us Ln I in u1 of -- N 350. 0 I, 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Timefrome Hour L, L L Hour Beginning 0 1 43.6Lav--- gglg59E 41.4 llE Ellllilg39E 52.9 39.4 L1% L2% L06 L8% L259. 51;0! S0 0 RO 49.0 480 D j , x0 "„4 L50% lyD ^40iD" 40i0::: AQs t ' 39f 39,0 40.0 39:0 43.6 41,4 10.0 10.0 53:6 51.4Z40.7 50.6 39.4 45.0 43 0 42}0 s a , i0a 4010 3910 39.0 39.0 40.7 10.0 50.7Night3 4 45.5 44.9 672 53.9 39.3 39.9 56.0 50:0 510 sOrit" r 4dYaZ4QO`OF 49 0 39;0 r 390 39.0 45:5 10.0 55.5 4 4 , j 4310 43: 40;0 40.0 44.9 10.0 54.9550.2 65.0 45:4 55.0 54.0 $3, t0 " Jy 49,0 4i,b 46.0 46.0 50.2 10.0 60.2655.7 77.8 44.1 64:0 63.0 45:0 55.7 10.0 65.7755.7 78.4 44.3 66.0 64.0 61.0 59.0 53.0 50.0 46.0 46.0 45.0 55.7 0.0 55.7853.7 70.3 42.9 65.0 62.0 59.0 57.0 51.0 48.0 46.0 45.0 44.0 53.7 0.0 53.7958.0 76.2 45.1 68.0 65.0 63.0 61.0 57.0 53.0 48.0 47.0 46.0 58.0 0.0 58.01056.7 80.7 46.0 67.0 64.0 61.0 59.0 53.0 50.0 47.0 47.0 46.0 56.7 0.0 56.71154.6 72.1 44.8 64.0 62.0 60.0 58.0 53.0 50.0 47.0 46.0 45.0 54.6 0.0 54.6 Day 12 56.0 74.9 45.2 68.0 64.0 61.0 58.0 52.0 49.0 47.0 46.0 46.0 56.0 0.0 56.01361.9 89.7 44.0 65.0 63.0 60.0 58.0 53.0 50.0 47.0 46.0 45.0 61.9 0.0 61.91458.2 80.9 45.4 67.0 65.0 63.0 60.1 54.0 52.0 48.0 47.0 46.0 58.2 0.0 58.21556.5 76.1 46.6 65.0 64.0 62.0 59.0 54.0 52.0 49.0 48.0 47.0 56.5 0.0 56.51654.5 75.4 44.1 65.0 62.0 59.0 57.0 52.0 49.0 47.0 46.0 45.0 54.5 0.0 54.51753.0 65.9 43.1 62.0 61.0 59.0 57.0 52.0 49.0 47.0 46.0 44.0 53.0 0.0 53.01855.2 1 71.2 44.0 65.0 1 64.0 61.0 60.0 53.0 49.0 46.0 45.0 44.0 55.2 0.0 55.2 Evening 19 20 52.0 67.9 41.1 64.0 62.0 57.0 54.0 49.0 47.0 44.0 43.0 42.0 52.0 5.0 57.0 48.6 1 67.9 39.3 60.0 58.0 54.0 50.0 46.0 43.0 40.0 40.0 39.0 48.6 5.0 53.62151.9 74.3 39.4 65.0 61.0 53.0 50.0 45.0 43.0 40.0 40.0 39.0 51.9 5.0 56.9 Night 22 45.8 68.3 40:6 53.0: 510 494 r j0.' Q3t0; J G 41 P 41.0; 41.0 45.8 10;0 55.82346,4 64 4 39x9 .:,.; 60:0! .. 54.D, x'. all I 40'0 :::_ .. 4010 10:0:.. 4644--. 56:4 Day Min 53.0 65.9 42.9 62.0 61.0 59.0 57.0 r• 46.0 45.0 44.051.0 48.0 Max 61.9 89.7 46.6 68.0 65.0 63.0 61.0 57.0 53.0 49,0 48.0 47.0 Energy Average 56.9 Average: 65.6 63.3 60.8 58.6 53.1 50.1 47.1 46.3 45.3 Evening Min 48.6 67.9 39.3 60.0 58.0 53.0 50.0 45:0 43.0 40.0 40.0 39.0 54.6 56.2 48.7 Max 52.0 74.3 41.1 65.0 62.0 57.0 54.0 49.0 47.0 44.0 43.0= 46.0 Energy Average 51.1 Average: 63.0 60.3 54.7 51.3 46:7 44.3 41.3 41.0 57.6 Night Mtn Max 40.7 55.7 50.6 77.8 39.& 45.4 45.0 64.0 43 0 63 0 42104 i6 0 x 41s0 6C)40 l 47,6.. ' 7 OIO 3 r 5 0 3 4 ij0 0 i 5Q{0 3910: 4710 - _ 39.0 q6,0 Energy Average 48.7 Average: 53.7 517 49.0 43.0. 41.3 41:1 U: Uclobsl_12100-12500112300`12356 Fieldwork 12356_L4_Summary 52 O uRBnNCROSSROADS 12356-04 Noise Study 215 Riverside Avenue Noise Impact Analysis APPENDIX 6.1: CADNAA NOISE MODEL DATA INPUTS & RESULTS 53 URBCROSSRAN 9-107 12356-04 Noise Study 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 54 LI MAN I: 12352 CadnaA Noise Prediction Model 12352-03.cna Date: 04.03.19 Analyst: A.Wolfe Receiver Noise Levels Name IDJLAvellrj Height I Coordinates Day X Y 2 88.9 86.9Lw 88.9 dBAI m) {m) m) ml 1 1 28.4 1.521,1 1844518.39 662676.10 17.131 2 2 26.71 1.521,1 1844553.45 662677.42 16.52 3 3 455 1.521r 1844688.05 662672.S4 18.14 4 4 48.2 1.52:; r 1 1844720.49 662661.66 17.59 S S 40.8 1.52 r 1841762.94 662635.fi6 15.52 6 6 37.9 1.52 r 1844748.35 662622.30 9.52 7 7 37.41 I.S21,1 1844690.22 662615.901 6.36 Area Source(s) Name Result. PWL Lw/Li Day Night Type Value norm. dBA) (dBA) dB(A) Parking Lot 69.9 69.9 Lw 69.9 H VAC 88.9 86.9Lw 88.9 HVAC 88.9 88.9 Lw 88.9 Barriers) Name Absorption Height Begin End BARRIERS 110. 244BARRIERS2.44 g BARRIERS 1.83191 I BUILDINGS 0.216.101rI IBUILDINGSI 0.211 3.051 r I I BUILDINGS 1 0.21 3.051 r i BUILDINGS 0.21; 3.05! r BUILDINGS) 0.211 6.10; r; BUILDINGS: 0.211 6.10 r Urban Crossroads. Inc. 55 9-109 215 Riverside Avenue Noise Impact Analysis This page intentionally left blank 12356-04 Noise Study O URBoAN 56 9-110 Exhibit 3 Preliminary Water Quality Management Plan 9-111 Preliminary Water Quality Management Plan pWQMP) 215 RIVERSIDE AVENUE Por. Lot D, Tract No. 919 APN 049-103-17 Newport Beach, California Prepared for: CANNERY PARTNERS LLC 660 Newport Center Drive, Suite 200 Newport Beach, CA 92660 Contact: Gary Jabara (949) 999-4545 Prepared by: TOAL ENGINEERING, INC. 139 Avenida Navarro, San Clemente, CA 92672 www.toalenaineering.com Contact: ADAM L. TOAL, R.C.E. 59275 (949) 492-8586 atoalCabtoalengineering.com Prepared on: JUNE 7, 2019 9-112 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Project Owner's Certification Permit/ Application No. PA2019-023 Grading Permit No. (TBD) Lot D Tract/Parcel Map No. Tract No. 919 Building Permit No (TBD) CUP, SUP, and/or APN (Specify Lot Numbers if Portions of Tract) 049-103-17 This Water Quality Management Plan (WQMP) has been prepared for Mr. Gary Jabara by Toal Engineering, Inc. The WQMP is intended to comply with the requirements of the local NPDES Stormwater Program requiring the preparation of the plan. The undersigned, while it owns the subject property, is responsible for the implementation of the provisions of this plan and will ensure that this plan is amended as appropriate to reflect up-to-date conditions on the site consistent with the current Orange County Drainage Area Management Plan (DAMP) and the intent of the non -point source NPDES Permit for Waste Discharge Requirements for the County of Orange, Orange County Flood Control District and the incorporated Cities of Orange County within the San Diego Region (South Orange County).. Once the undersigned transfers its interest in the property, its successors -in -interest shall bear the aforementioned responsibility to implement and amend the WQMP. An appropriate number of approved and signed copies of this document shall be available on the subject site in perpetuity. Owner. Gary Jabara Title Company Cannery Partners LLC Address 660 Newport Center Drive, Suite 200, Newport Beach, CA 92660 Email gary@mobilitie.com Telephone # 949-9994545 Signature Date MR. GARY JABARA Owner's Certification 9-113 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Contents Page No. Section I Discretionary Permit(s) and Water Quality Conditions ..................................... 3 SectionII Project Description.......................................................................................... 4 SectionIII Site Description.............................................................................................. 7 Section IV Best Management Practices (BMPs)............................................................. 10 Section V Inspection/ Maintenance Responsibility for BMPs.......................................... 29 Section VI Site Plan and Drainage Plan.......................................................................... 31 Section VII Educational Materials.................................................................................. 34 Attachments AttachmentA........................................................................................... BMP Fact Sheets AttachmentB................................................................................... Educational Materials AttachmentC.................................................................... Operation & Maintenance Plan MR. GARY ]ABARA Table of Contents 9-114 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Section I Discretionary Permit(s) and Water Quality Conditions MR. GARY 3ABARA Section I Page 3 9-115 Project Infomation Permit Application No. PA2019-023 Tract/Parcel Map No. Lot D Tract No. 919 Additional Information/ Comments: Water Quality Condiions Water Quality Prior to the issuance of any grading or building permits, the applicant Conditions shall submit for review and approval by the Manager, Permit Services, list verbatim) a Water Quality Management Plan (WQMP) specifically identifying Best Management Practices (BMPs) that will be used onsite to control predictable pollution runoff. The applicant shall utilize the Orange County Drainage Area Management Plan (DAMP), Model WQMP, and Technical Guidance Manual for reference, and the County's WQMP template for submittal. This WQMP shall include the following: Detailed site and project description Potential stormwater pollutants Post-development drainage characteristics Low Impact Development (LID) BMP selection and analysis Structural and Non -Structural source control BMPs Site design and drainage plan (BMP Exhibit) GIS coordinates for all LID and Treatment Control BMPs Operation and Maintenance (O&M) Plan that (1) describes the mechanism for funding the long-term operation and maintenance of referenced BMPs. The BMP Exhibit from the approved WQMP shall be included as a sheet in all plan sets submitted for plan check and all BMPs shall be depicted on these plans. Grading and building plans must be consistent with the approved BMP exhibit. MR. GARY 3ABARA Section I Page 3 9-115 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Watershed -Based Plan Conditions Provide applicable conditions from watershed TMDLs for Lower Newport Bay: based plans including Nutrients (1998) TMDLS. Toxics (2002) Fecal Coliform (1999) MR. GARY IABARA Section I Page 4 9-116 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Section II Project Description IIA Project Description Description of Proposed Project Development 8. All significant redevelopment projects, where significant redevelopment is Category defined as the addition or replacement of 5,000 or more square feet of Verbatim from c impervious surface on an already developed site. Redevelopment does not WQMP): include routine maintenance activities that are conducted to maintain original line and grade, hydraulic capacity, original purpose of the facility, or emergency redevelopment activity required to protect public health and safety If the redevelopment results in the addition or replacement of less than 50 percent of the impervious area on-site and the existing development was not subject to WQMP requirement, the numeric sizing criteria discussed in Section 7.II-2.0 only applies to the addition or replacement area. If the addition or replacement accounts for 50 percent or more of the impervious area, the Project WQMP requirements apply to the entire development Project Area (ft2): 16,290 •Number of Dwelling Units: 1 .SIC Code: 1521 i.................................................. Narrative The project consists of the following: (1) demolition of the existing building and Project c associated parking areas; (2) construction of a new retail space along with a 2 -level Description: parking garage and appurtenant hardscape, landscape, and drainage improvements. Runoff from the roof and upper level parking garage will be directed to and treated by a bioretention planter box prior to discharge. Runoff from within the basement Ievel covered parking garage will be treated by filter inserts prior to discharge. L...."'........... ............................................................ .......................................................... Pervious Impervious Project Area...............................,....................................................................................... Area (so Percentage Area (so Percentage Pre -Project Conditions 2,815 17 13,475 83 Post -Project Conditions 5,140 32 11,150 68 i................... ........... . i............................ Drainage Patterns/ Connections See Section III.2. MR. GARY JABARA Section II Page 5 9-117 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California II.2 Potential Stormwater Pollutants MR. GARY ]ABARA Section II Page 6 9-118 Pollutants of Concern Circle One: E=Expected to Pollutant be of concern Additional Information and Comments N=Not Expected to be of concern Suspended -Solid / Sediment g> N Nutrients O N F Heavy Metals I IOE N PathogensPathogens (Bacteria/ Virus) OE N J— Pesticides i EO N Oil and Grease EO N Toxic Organic Compounds E ON Trash and DebrisEO N MR. GARY ]ABARA Section II Page 6 9-118 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California II.3 Hydrologic Conditions of Concern Hydrologic Conditions of Concern (HCOCs) do not exist for this project since site runoff is conveyed in a storm drain system and discharged directly into Newport Bay. II.4 Post Development Drainage Characteristics Post -construction surface drainage will be directed to the same ultimate discharge points as prior to construction. Runoff from the front portion of the property will be directed to a gravel bed for infiltration prior to discharge to the street. Runoff from the remaining portions of the site will be collected in an area drain system and discharged into the existing street through drain box filter at the rear of the property and then pumped up to the street for discharge. The drainage system is shown on the Preliminary Grading and Drainage Plan and the Preliminary Water Quality Management Plan for the project. II.S Property Ownership/ Management This property is privately owned by: Cannery Partners, LLC Gary Jabara 660 Newport Center Dr., Suite 200 Newport Beach, CA 92660 Tel: (949) 9994545 MR. GARY IABARA Section II Page 7 9-119 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Section III Site Description III.1 Physical Setting Planning Area/ N/A Community Name Location/Address 215 Riverside Avenue, Newport Beach, California Project Area Description The subject property lies on the northwesterly corner of the intersection of Riverside Avenue and Avon Street Land Use RSD -A: Single Unit Residential Detached (0.0-5.9 DU/AC) Zoning 1 CG -05: Commercial General Acreage Property: 16,290 s.f. (0.374 acres) Project: 14,470 s.f. (0.332 acres) Predominant Soil Type Per the O.C. Hydrology Manual Plate B, the project is underlain by soil Type D. MR. GARY ]ABARA Section III Page 8 9-120 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California III.2 Site Characteristics Precipitation Zone 0.7 -in (TGD Fig XVI -1) Topography The subject property is sloed commercial lot. Elevations on the developed portion of the site range from a maximum of about 43 -feet to a minimum of about 16 -feet. Drainage Under existing conditions, the runoff from the site flows to the streets Patterns/Connections at the east (Riverside) and south (Avon) of the property. Soil Type, Geology, and Per the O.C. Hydrology Manual Plate B, the project is underlain by Infiltration Properties soil Type D. Hydrogeologic A soils report is not available at this time. Groundwater) Conditions Geotechnical Conditions According to infiltration BMP feasibility criteria, infiltration of the relevant to infiltration) entire DVC is not feasible for this project Off -Site Drainage The project site does not receive run-on from adjacent properties. Utility and Infrastructure Public and private utilities are already in place for this property. Information MR. GARY JABARA Section III Page 9 9-121 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California III.3 Watershed Description Receiving Waters Lower Newport Bay I ......... 303(d) Listed Impairments Chlordane, Copper, DDT, Indicator Bacteria, Nutrients, PCBs, Pesticides, Sediment Toxicity Applicable TMDLs Sediment, Nutrients, Toxics, Fecal Coliform Primary Pollutants of Concern: Chlordane, Copper, DDT, Indicator Bacteria, Nutrients, PCBs, Pesticides, Pollutants of Concern for ' Sediment Toxicity. the Project Other Pollutants of Concern: None. Environmentally Sensitive and Special Biological Lower Newport Bay. Significant Areas MR. GARY JABARA Section III Page 10 9-122 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Section IV Best Management Practices (BMPs) IV. 1 Project Performance Criteria Project Performance Criteria If HCOC exists, list applicable Per Section 11.3 of this report, HCOCs do not hydromodification control performance criteria exist for the proposed project. MWQMP Appendix C) List applicable Priority Projects must infiltrate, harvest and use, evapotranspire, or LID performance biotreat/biofilter, the 85th percentile, 24-hour storm event (Design criteria (Section Capture Volume). 7.II-2.4.3 from , A properly designed biotreatment system may only be considered ifMWQMP) infiltration, harvest and use, and evapotranspiration (ET) cannot be feasibly implemented for the full design capture volume. In this case, infiltration, harvest and use, and ET practices must be implemented to the greatest extent feasible and biotreatment may be provided for the remaining design capture volume. Calculate LID 1 Simple Method per TGD III.1.1. DCV for Project. DCV = C x d x A C = (0.75 x imp + 0.15) = 0.75 x 0.77 + 0.15 = 0.73 d = 0.70 in. A= 14,470 sq. ft. DCV = 0.73 x 0.70 in. x 14,470 s. f . x 1f t } = 616 cf12in. MR. GARY JABARA Section IV Page 11 9-123 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Worksheet B: Simple Design Capture Volume Sizing Method Step 1: Determine the design capture storm depth used for calculating volume Enter design capture storm depth from Figure 111.1, d (inches) d= 0.70 inches 2 Enter the effect of provided HSCs, dHsc (inches) Worksheet A dHSC= inches 3 Calculate the remainder of the design capture storm depth, dremainder inches Line 1 — Line 2 dremainder= 0.70 inches Step 2: Calculate the DCV i Enter Project area tributary to BMP (s), A (acres) A= 0.332 acres 2 Enter Project Imperviousness, imp (unitless) imp= 0.77 3 Calculate runoff coefficient, C= (0.75 x imp) + 0.15 C= 0.73 4 Calculate runoff volume, Vdesign= (C X dremainder x A x 43560 x 1/12 Vdesign= 616 cu -ft Step 3: Design BMPs to ensure full retention of the DCV Step 3a: Determine design infilftation rate I Enter measured infiltration rate, Kmeasured (in/hr) Appendix VII Kmeasured— In/hr 2 Enter combined safety factor from Worksheet H, Sfinal (unitless) Sfinal= 3 Calculate design infiltration rate, Kdesign = Kmeasured/ Sfinal Kdesign= In/hr Step 3b: Determine minimum BMP footprint 4 Enter drawdown time, T (max 48 hours) T= Hours 5 Calculate max retention depth that can be drawn down within the drawdown time (feet), Dmax = Kdansi x T x 1112 ma"= feet 6 Calculate minimum area required for BMP (sq -ft), A.,,, = Vdesign/ dmex Arm= sq -ft MR. GARY JABARA Section IV Page 12 9-124 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California IV.2. SITE DESIGN AND DRAINAGE PLAN Overview The ultimate plan of development for the proposed project is shown on the WQMP Site Plan in Section VI of this report. The project Precise Grading Plan shows the proposed grading, site improvements, and retaining walls necessary for construction of a single-family residence. Site Design Practices The project incorporates Site Design practices as follows: Preserve Existing Drainage Patterns and Time of Concentration - The ultimate points of discharge are the same for the pre- and post -project conditions. Time of concentration will be similar, since pre -and post -project flow path lengths will be similar. Drainage Management Areas (DMAs) There is one (1) Drainage Management Area (DMA) for this commercial development. The following LID BMP will be used to meet the calculated Design Volume for the DMA: Bioretention with Underdrain (Biotreatment BMP) DM Area (sq. A ft.) Impervious BMP Type Sizing 1 14,470 0.T7 BIO -1: Bioretention w/ SWQDvUnderdrain See discussion for the selected BMP in Section IV.3. See the WQMP Site Plan provided in Section VI of this report for DMA location and characteristics. The GIS coordinates for all BMPs are nearIy identical at: 33.6219, -117.9237. MR. GARY IABARA Section IV Page 13 9-125 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California IV.3 BMP SELECTION AND PROJECT CONFORMANCE ANALYSIS IV.3.1 Hydrologic Source Controls The Hydrologic Source Controls to be used for this project are indicated in the table below. Implementation of said controls is discussed in the text that follows. Name Included? Localized on -lot infiltration Impervious area dispersion (e.g. roof top disconnection) Street trees (canopy interception) Residential rain barrels (not actively managed) Green roofs/Brown roofs Blue roofs Impervious area reduction (e.g. permeable pavers, site design) Other: Hydrologic Source Controls have not been used due to space constraints, including landscape area size and proximity to structure foundations. MR. GARY JABARA Section N Page 14 9-126 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California IV.3.2 Infiltration BMPs Infiltration BMPs to be used for this project are indicated in the table below. Implementation of said controls is discussed in the text that follows. Name Included? Bioretention without underdrains Rain gardens Porous landscaping Infiltration planters Retention swales Infiltration trenches Infiltration basins Drywells Subsurface infiltration galleries p French drains Permeable asphalt Permeable concrete Permeable concrete pavers Other: It is believed that infiltration will not be feasible for this project due to the Type "D" site soils. Further analysis will be done when the soils report becomes available. MR. GARY 3ABARA Section N Page 15 9-127 Water Quality Management Plan (WQMP) z15 Riverside Avenue, Newport Beach, California Table 2.7: Infiltration SMP Feasibility Worksheet Provide basis: Infiltration BMPs will not pose a significant risk to local groundwater. Groundwater in the vicinity of the project site is not used for drinking water. Pretreatment devices will mitigate entry of trash, sediment, and oil & grease into proposed infiltration BMPs. Would Infiltration BMPs pose significant risk of increasing risk of geotechnical hazards that cannot be mitigated to an acceptable level? (Yes if the answer to any of the following questions is yes, as established by a geotechnical expert): The BMP can only be located less than 50 feet away 2 from slopes steeper than 15 percent x The BMP can only be located less than eight feet from building foundations or an alternative setback. A study prepared by a geotechnical professional or an available watershed study substantiates that stormwater infiltration would potentially result in significantly increased risks of geotechnical hazards that cannot be mitigated to an acceptable level. Provide basis: 3 Would infiltration of the DCV from drainage area violate xdownstreamwaterrights? Provide basis: There are no downstream water right holders since site drainage is conveyed via the city storm drain system directly to receiving waters (Lower Newport Bay). MR. GARY ]ABARA Section IV Page 15 9-128 Infeasibility criteria yes lila Would Infiltration BIHPs pose significant risk for 1 groundwater related concerns? Refer to Appendix VII Worksheet 1) for guidance on groundwater -related x infiltration feasibility criteria. Provide basis: Infiltration BMPs will not pose a significant risk to local groundwater. Groundwater in the vicinity of the project site is not used for drinking water. Pretreatment devices will mitigate entry of trash, sediment, and oil & grease into proposed infiltration BMPs. Would Infiltration BMPs pose significant risk of increasing risk of geotechnical hazards that cannot be mitigated to an acceptable level? (Yes if the answer to any of the following questions is yes, as established by a geotechnical expert): The BMP can only be located less than 50 feet away 2 from slopes steeper than 15 percent x The BMP can only be located less than eight feet from building foundations or an alternative setback. A study prepared by a geotechnical professional or an available watershed study substantiates that stormwater infiltration would potentially result in significantly increased risks of geotechnical hazards that cannot be mitigated to an acceptable level. Provide basis: 3 Would infiltration of the DCV from drainage area violate xdownstreamwaterrights? Provide basis: There are no downstream water right holders since site drainage is conveyed via the city storm drain system directly to receiving waters (Lower Newport Bay). MR. GARY ]ABARA Section IV Page 15 9-128 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Table 2.7: Infiltration SMP Feasibility Worksheet (continued) Provide basis-- Proposed asin Proposed facility is located on HSG -A soils per OCHM Soil Maps Is measured infiltration rate below proposed facility 5 less than 0.3 inches per hour? This calculation shall be K based on the methods described in Appendix VII. Provide basis. Infiltration rate is presumed to be greater than 0.3 inches per hour based on site's HSG. Would reduction of over predeveloped conditions cause impairments to downstream beneficial uses, such as fi change of seasonality of ephemeral washes or x increased discharge of contarninated groundwater to surface waters? Provide citation to applicable study and summarize findings relative to the amount of infiltration that is permissible: No downstream beneficial uses such as ephemeral washes or groundwater sources of drinking water are located downstream of the subject property. Would an increase in infiltration over predeveloped conditions cause impairments to downstream beneficial 7 uses, such as change of seasonality of ephemeral X washes or increased discharge of contaminated groundwater to surface waters? Provide citation to applicable study and summarize findings relative to the amount of infiltration that is permissible; No downstream beneficial uses such as ephemeral washes or groundwater sources of drinking water are located downstream of the subject property. MR. GARY ]ABARA Section IV Page 17 9-129 Partial Infeasibility Criferra Yes No Is proposed infiltration facility located on HSG D soils or the 4 site geotechnical investigation identifies presence of soil x characteristics which support categorization as D soils? Provide basis-- Proposed asin Proposed facility is located on HSG -A soils per OCHM Soil Maps Is measured infiltration rate below proposed facility 5 less than 0.3 inches per hour? This calculation shall be K based on the methods described in Appendix VII. Provide basis. Infiltration rate is presumed to be greater than 0.3 inches per hour based on site's HSG. Would reduction of over predeveloped conditions cause impairments to downstream beneficial uses, such as fi change of seasonality of ephemeral washes or x increased discharge of contarninated groundwater to surface waters? Provide citation to applicable study and summarize findings relative to the amount of infiltration that is permissible: No downstream beneficial uses such as ephemeral washes or groundwater sources of drinking water are located downstream of the subject property. Would an increase in infiltration over predeveloped conditions cause impairments to downstream beneficial 7 uses, such as change of seasonality of ephemeral X washes or increased discharge of contaminated groundwater to surface waters? Provide citation to applicable study and summarize findings relative to the amount of infiltration that is permissible; No downstream beneficial uses such as ephemeral washes or groundwater sources of drinking water are located downstream of the subject property. MR. GARY ]ABARA Section IV Page 17 9-129 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Table 2.7: Infiltration BMP Feasibility Worksheet (continued) Infiltration Screening Results (check box corresponding to result): Is there substantial evidence that infiltration from the project would result in a significant increase in I&I to the sanitary sewer that cannot be sufficiently mitigated? (See Appendix XVII) 8 No Provide narrative discussion and supporting evidence: No evidence of I&I has been provided by the local sewer agency (City of Newport Beach). If any answer from row 1-3 is yes: infiltration of any volume 9 is not feasible within the DMA or equivalent. Provide basis: If any answer from row 4-8 is yes, infiltration is permissible but is not presumed to be feasible for the entire DCV. Criteria for designing biotreatment BMPs to 10 achieve the maximum feasible infiltration and ET shall apply. Provide basis: If all answers to rows 1 through 10 are no, infiltration of the 11 full DCV is potentially feasible, BMPs must be designed to X infiltrate the full DCV to the maximum extent practicable. MR. GARY JABARA Section IV Page 18 9-130 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California IV.3.3 Evapotranspiration, Rainwater Harvesting BMPs Evapotranspiration and/or Rainwater Harvesting BMPs to be used for this project are indicated in the table below. Implementation of said controls is discussed in the text that follows. Nance Included? All HSCs; See Section IV.3.I Surface -based infiltration BMPs Other vegetated BMPs Above -ground cisterns and basins Underground detention Other_ The project site does not have an irrigation demand large enough to justify partial capture for irrigation demand. See Worksheet J from Section X of the TGD on the following page. MR. GARY 7ABARA Section N Page 19 9-131 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Worksheet J: Summary of Harvested Water Demand and Feasibility 1 What demands for harvested water exist in the tributary area (check all that apply): 2 Toilet and urinal flushing 3 Landscape irrigation 4 Other: 5 What is the design capture storm depth? (Figure 111.1) d 70 inches 6 What is the project size? A 0.332 ac F7 What is the acreage of impervious area? IA 0.256 ac 8 For projects with multiple types of demand (toilet flushing, irrigation What is the minimum use required for partial capture? (Table X.6) demand, and/or other demand) 9 Pd 9 What is the project estimated wet season total daily use Section X.2)? gP d 10 11 Is partial capture potentially feasible? (Line 9 > Line 8?) For projects with only toilet flushing demand What is the minimum TUTIA for partial capture? (Table X.7) 12 What is the project estimated TUTIA? 13 Is partial capture potentially feasible? (Line 12 > Line 11?) 14 For projects._ demand What is the minimum irrigation area required based on conservation landscape design? (Table X.8) 0.84 x 0.256 — 0.215 ac 15 What is the proposed project irrigated area? (multiply conservation landscaping by 1; multiply active turf by 2) 0.076 ac 16 Is partial capture potentially feasible? (Line 15 > Line 14?) No Provide supporting assumptions and citations for controlling demand calculation: MR. GARY JABARA Section IV Page 20 9-132 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California IV.3.4 Biofiltration BMPs Biofiltration BMPs to be used for this project are indicated in the table below. Implementation of said controls is discussed in the text that follows. Name Included? Bioretention with underdrains Stormwater planter boxes with underdrains Proprietary vegetated biotreatment systems Other: DMA 1 utilizes a Biotreatment BMP as LID treatment for this project. DMA -1 includes the entire project. The proposed bioretention w/ underdrain systems features: a 3" mulch layer underlain by 24" thick section of soil media (with an infiltration rate of 2.5"/hr. (min.)) and a 12" thick section of gravel. Above the media surface is a ponding depth of 12 inches, with inlets provided at the design ponding depth to provide collection for runoff volumes exceeding the capacity of the system. A 6" diameter, perforated underdrain pipe is provided near the base of the gravel layer for collection of storm water passing through the system. The required volume storage determined using Worksheet C (see Attachment B), with the results summarized below: DMA -1: 202 cu. ft. (205 sq. ft. surface area w/ 12" ponding depth) The BMP Fact Sheet for 13I0-1: Bioretention with Underdrain is also provided in Attachment B. See the WQMP Site Plan in Section VI for DMA drainage areas, BMP locations, and BMP detail. MR. GARY JABARA Section IV Page 21 9-133 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California DMA -i: Bioretention w/ Underdrain (BIO -i) Worksheet C: Copture Efficiency Method for Volume -Based, Constant Drowdown SNIPS Step 1: Determine the design capture storm depth used for calculating volume 1 Enter design capture storm depth from Figure 111.1, d (inches) d= 0.70 inches 2 Enter calculated drawdown time of the proposed BMP based T= 4.8 hoursonequationprovidedinapplicableBMPFactSheet, T(hours) Using Figure 111.2, determine the "fraction of design capture 3 storm depth" at which the BMP drawdown time (T) line Xi= 0.34 achieves 80% capture efficiency, X, 4 Enter the effect depth of provided HSCs upstream, dHsc dHSC= 0 inchesinches) (Worksheet A) 5 Enter capture efficiency corresponding to dHSC, Yz o Worksheet A) Y2= 0 o Using Figure 111.2, determine the fraction of "design capture 6 storm depth" at which the drawdown time (T) achieves the X2= 0 equivalent of the upstream capture efficiency(Y2), X2 7 Calculate the fraction of design volume that must be provided by BMP, fraction = X1- X2 fraction= 0.34 8 Calculate the resultant design capture storm depth (inches), drraction= 0.238 inchesdrraction= fraction x d SOC Only: When using this method for biofiltration sizing, 9 check that the resulting volume in ponding plus pore spaces is N/Aatleast0.75x the remaining DCV (after accounting for upstream HSC/retention BMPs). (See Worksheet SOC -1) Step 2: Calculate the DCV 1 Enter Project area tributary to BMP (s), A (acres) A= 0.332 acres 2 Enter Project Imperviousness, imp (unitless) imp= 0.77 3 Calculate runoff coefficient, C= (0.75 x imp) + 0.15 C= 0.73 Calculate runoff volume, Vdesign= (C x driraction x A x 43560 x Vdesign= 202 cu -ft 4 1 1/12)) Supporting Calculations Describe system: Enclosed Planter Box w/ 12" ponding depth, 3" mulch layer, 24" of top soil/planting mix, over pea gravel w/ a 6" diameter underdrain pipe. Bioretention Area per WQMP Site Plan in Section VI = 205 sq. ft. A = Vdesign / Ponding Depth (dp) --> 202 cu. ft. / 1 ft. = 202 sq. ft. ......OK MR. GARY ]ABABA Section IV Page 22 9-134 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California bVorksheet C: Capture Efficiency,Ivlethod for Volume-Bo>erl, Constant Drawdown QAWs Provide drawdown time calculations per applicable BMP Fact Sheet: DD = (dp / KMEDIA) * 12 in./ft. --> DD = (1 / 2.5) * 12 --> DD = 4.8 hours where: KMEDrA = 2.5 in./hr (per TGD Appendix XIV -53, Capture Efficiency Method for Biotreatment) Graphical Operations 100°x6r .... r ..a- r b'- Drawdown Time 90% 3 -hr 1 12-hr 60% f lI 24 -hr 50% - 1. _ 36-hr f L 48 -hr 40°% 72-hr ev / U 96 -hr 30% 20% 120 -hr 180 -hr r -240 -hr 10% 360 -hr 480 -hr 0% 720 -hr 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Fraction of Design Capture Storm Depth Provide supporting graphical operations. See Example 111.6. MR. GARY 7ABARA Section IV Page 23 9-135 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California IV.3.5 Hydromodification Control BMPs Hydromodification controls are not required for Us project because Hydrologic Conditions of Concern do not exist for Us project. See Section II.3. Hydromodification Control BMPs BMP Name BMP Description MR. GARY ]ABARA Section IV Page 24 9-136 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beath, California IV.3.6 Non-structural Source Control BMPs Non-structural source control BMPs used for this project are described below. Non -Structural Source Control BMPS Check one Identifier Name If not applicable, state brief Included Not eaS°n Applicable NI Education For Property Owners, LIandOccupants N Activity Restrictions 3 Common Area Landscape No common areas present. Management N4 BMP Maintenance Title 2.. CCR Compliance (How No hazardous waste. development will comply) N6 Loral industriaE Permit Compliance Not an industrial project. N7 Spill Contingency Pian 0. No hazardous waste. Underground 5#Drage Tank ............... I.. No USTs on site. Compliance Materials Disclosure .......................... Na hazardous waste. Compliance N1U. Uniform Fire Code [mplementatian ..• No hazardous waste ............. N11 Common Asea Litter Contra! Na common areas resent N12..... Employee Training .......................... f v em ployees....................... El loading docks exposed lo... Housekeeping of Loading Docks storm water proposed. i 14.... Common Area Catch Basin Inspection No common areas present N 5 Street Sweeping Private Streets and No exterior parking areas. Parking Lots IVIG..... Retail Gasoline Outlets ..................... El.._ 0..... None exist ........................... MR. GARY ]ABABA Section rV Page 25 9-137 Water Quality Management Plan (WQMP) 215 Rlversida Avenue, Newport Beach, California IV.3.7 Structural Source Control BMPs Structural source control BMPs used for this project are described below. Structural Source Contra! BMPs Check One Identifier Name If not applicable, state brief Included Not reason Applicable Provide storm drain system stenciling51 Li® Drain inlets on private property. and signage Design and construct outdoor material S2 storage areas to reduce pollution Cl No outdoor MSAs. introduction Design and construct trash and waste S3 storage areas to reduce pollution Cl introduction Use efficient irrigation systems & S4 landscape design, water conservation, smart controllers, and source control S5 Protect slopes and channels and No proposed slopes or channels. provide energy dissipation Incorporate requirements applicable to individua[ priority project categories from SDRWQCB NPDES Permit) S6 Dock areas L None exist. 57 Maintenance bays None exist. S8 Vehicle wash areas None exist. S9 Outdoor processing areas None exist. 510 Equipment wash areas None exist. S11 Fueling areas None exist. S12 Hillside landscaping None exist. S13 Wash water control for food None exist_ preparation areas S14 Community car wash racks None exist. MR. GARY ]ABARA Section IV Page 25 9-138 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California IV.4 ALTERNATIVE COMPLIANCE PLAN (IF APPLICABLE) IV.4.1 Request of Waiver of LID BMPs IV.4.2 Water Quality Credits Description of Proposed Project Project Types that Qualify for Water Quality Credits (Select all that apply): Redevelopment Brownfield redevelopment, meaning Higher density development projects which projects that reduce the i redevelopment, expansion, or reuse of real include two distinct categories (credits can only overall impervious property which may be complicated by the be taken for one category): those with more than footprint of the project ' presence or potential presence of hazardous i seven units per acre of development (lower credit site. ;substances, pollutants or contaminants, and allowance); vertical density developments, for which have the potential to contribute to example, those with a Floor to Area Ratio (FAR) adverse ground or surface WQ if not i of 2 or those having more than 18 units per acre redeveloped.i (greater credit allowance). Mixed use development, such as a Transit -oriented developments, such as a mixed i Redevelopment combination of residential, commercial, j use residential or commercial area designed to j projects in an established industrial, office, institutional, or other land maximize access to public transportation; similar to historic district, historic uses which incorporate design principles i above criterion, but where the development center is i preservation area, or that can demonstrate environmental benefits i within one half mile of a mass transit center (e.g. bus, i similar significant city that would not be realized through single rail, light rail or commuter train station). Such area including core City use projects (e.g. reduced vehicle trip traffic i projects would not be able to take credit for both Center areas (to be with the potential to reduce sources of water i categories, but may have greater credit assigned defined through or air pollution). i i mapping). I i Eli Live -work developments, a i ln-fill projects, the Developments withEli Developments variety of developments designed i conversion of empty lots dedication of undeveloped i in historic ! to support residential and i and other underusediDevelopmentsiportionstoparks, i districts or i vocational needs together - ;spaces into moreinacitycenter preservation areas and ; area. historic i similar to criteria to mixed use i beneficially used spaces, other pervious uses. preservation 1 development; would not be able i such as residential or areas. i to take credit for both categories. i commercial areas. Calculation of ----- ----•--------------• ---------- Water Quality I his prVliii'1 due's IlU! •..11l:llli'i Ii1!' III:' R'Mor i.lU;l i!`.' i i'[`dits :.li'."1% . Credits (if applicable) IV.4.3 Treatment Control BMPs Since the project is fully treated using Infiltration BMPs, utilization of Treatment Control BMPs is not required. Treatment Control BMPs MR. GARY ]ABARA Section IV Page 27 9-139 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California BMP Name BMP Description Kristar Flogard Catch Basin Filter Insert (Model FGP- 24F) TRT -2 Media Filter The Filter removes Hydrocarbons, oil, grease, trash and sediment and debris. See Spec Sheet on Attachment F Use and Location The indoor parking garage will not be directed to the Bioretention planter box for treatment. Because it is indoor, there is no runoff tributary to this area, however, drain inlets in the garage can collect contaminated water from cars that enter the garage. Therefore, the drains in the garage will be fitted with treatment filters. Locations of proposed treatment control BMPs are shown on the BMP Exhibit in Section VI. Performance The provided Filter insert performance (See Filter Insert Spec page on Attachment D) provides treatment for the pollutants of concern. Specifically: Trash and Debris removal Hydrocarbons (Oil, Grease, Pesticide) 8o% Removal Sediment (TSS) 86% Removal Grease, Pesticide) 8o% Removal Sediment Removal Pathogen/microorganism removal (Coliforms, Enterococcus) Sizing See Worksheet D (Capture Efficiency Method for Flow -Based BMPs) calculations on the following page. The design flow rate of 0.015 cfs is fully treated by the proposed Kristar FloGard Catch Basin Filter insert FGP-12F which has a treatment capacity of 0.25 cfs (See Spec sheet in Attachment Q. MR. GARY JABARA Section N Page 28 9-140 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Worksheet D: Capture Efficiency Method for Flow -Based BMPs Step 1: Determine the design capture storm depth used for calculating volume 1 Enter the time of concentration, Tc (min) (See Appendix IV.2) Tc= 5 Using Figure 111.4, determine the design intensity at which the estimated time of concentration (Tc) achieves 80% capture 11= 0.26 in/hr 2 efficiency, h 3 Enter the effect depth of provided HSCs upstream, dHsc (inches) dHSC= inchesWorksheetA) 4 Enter capture efficiency corresponding to dHSC, Yz o Worksheet A) Yz= o Using Figure 111.4, determine the design intensity at which the 5 time of concentration (Tc) achieves the upstream capture Iz= efficiency(Yz), 12 6 Determine the design intensity that must be provided by BMP, ldesign= 11-12 ldesign= 0.26 Step 2• Calculate the design flowrate 1 Enter Project area tributary to BMP (s), A (acres) A= 0.128 acres 2 Enter Project Imperviousness, imp (unitless) imp= 064 3 Calculate runoff coefficient, C= (0.75 x imp) + 0.15 C= 0.63 Calculate design flowrate, Qdesign= (C X ldesign X A) Qdesign= 0.021 cfs 4 Supporting Calculations The design flowrate for the lot that is using the filter insert is 0.021 The provided Kristar FloGard filter Insert (FGP-12F) provides 0.25 cfs of filtered flow...... OK Provide time of concentration assumptions: Tc of 5 -minutes is the minimum allowed and provides the most conservative design. MR. GARY JABARA Section IV Page 29 9-141 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California O VI r o W N (D (D (D C5 l.I :3 ? . ay-. ? v LO0 I i Oo O 1111 O O O 4-) I II 10 N 1I A 11 II II `/ OIx m o CD 1.1 0 Ln o= u, r Cl) O LO 0 O O O O O O O O O O O O OOOOOOOOOOOO O (7 CO I- (0 Ln 'IT Cr) CI r Aoualai;43 a.in;deo ienuuV a6eaaAV a MR. GARY JABARA Section IV Page 30 9-142 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California IVA4 Regional/Sub-Regional LID BMPs This project will not participate in Regional/Sub-Regional LID BMPs since the full DCV can be treated using LID BMPs. Regional/Sub-Regional LID BMPs IVAS other Alternative Compliance Measures This project will not make use of other alternative compliance measures since the Full DCV can he treated using LID BMPs. MR. GARY ]ABARA Section IV Page 31 9-143 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Section V Inspection/ Maintenance Responsibility for BMPs An Operation and Maintenance Plan is included in Attachment C. MR. GARY 7ABARA Section VI Page 32 9-144 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Section VI Site Plan and Drainage Plan VI.1 SITE PLAN AND DRAINAGE PLAN VI.2 ELECTRONIC DATA SUBMITTAL MR. GARY JABARA Section VI Page 33 9-145 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California MR. GARY JABARA Section V1 Page 34 9-146 Palk Xo' :17111 M j Balboa Say pes.'I 0 Linda Island V111: 'It.Linda 1.1l, Lowe' qb 7 Lra,i, N—i-1 bd. Pen—un r Lid. Isto PM.—wo"y 14016.11sh.d e Dontits, Boliery 0 Bala Sharkeez BALBOA Ld. lute PENINSULA neach ""Pa 0..cb pier oc"II1101 In, Balboa Island Bay Island 0.1b.. Won,] Pon,y 0 Baty 8,73, a Bhtl Balbaa Fun Zona 0 0 Balboa Pavilion Go gle Balb- Peninsula Park Harbor 1,1aad Figure V1.1. Vicinity Map. Source: maps.google.com MR. GARY JABARA Section V1 Page 34 9-146 Water Quality Management Plan (WQMP) 215 Riverside Avenue, Newport Beach, California Figure V1.2. Aerial Image. Source; rnaps.googlexom MR. GARY ]ABARA Section VI Page 3S 9-147 z PLANTER BOX cw"iou L"=°, TREATMENT FILTER TREATMENT FILTER 20' VV.Q.W'P. SITE PLAN JOB =10131 9-148 MAI mLE7 ^y---- VOP STREET_ 20' VV.Q.W'P. SITE PLAN JOB =10131 9-148 Water Quality Management Plast (WQMP) 215 Riverside Avenue, Newport Beach, California Section VII Educational Materials Refer to the Orange County Stormwater Program (ocwatersheds.com) for a library of materials available. For the copy submitted to the Permittee, only attach the educational materials specifically applicable to the project. Other materials specific to the project may be included as well and must be attached. Education Matefials Residential Material Check If Business Material Check If http://wrww.ocwatersheds.com) Applicable http:llwww.acwatersheds.com) Applicable The Ocean Begins at Your Front Door Tips for the Automotive Industry Tips for Car Wash Fund-raisers Tips for Using Concrete and Mortar Tips for the Home Mechanic Tips for the Food Service Industry Homeowners Guide for Sustainable Proper Maintenance Practices for Your 1:1WaterUseBusiness Household Tips Compliance BMPs for Mobile Businesses Proper Disposal of Household Hazardous Waste Check If other Material AttachedRecycleatYourLocalUsedOil Collection Center (North County) Recycle at Your Local Used Oil ElCenter (Central County) Recycle at Your Local Used Oil F-1 11CollectionCenter (South County) Tips for Maintaining a Septic Tank E] 11System Responsible Pest Control to Sewer Spill Tips for the Home Improvement Projects Tips for Horse Care Tips for Landscaping and Gardening Tips for Pet Care Tips for Projects Using Paint ® J MR. GARY 3ABARA Section VII Page 35 9-149 ATTACITMENT A 9450 TECHNICAL GUIDANCE DOCU\4ENT APPENDICES XIV.5. Biotreatment BLIP Fact Sheets (BIO) Conceptual criteria for biotreatment B\IP selection, design, and maintenance are contained in Appendix Xll. 'Mese criteria are generally: applicable to the design of biotreatment BiIPs in Orange County and BiV9P-specific guidance is provided in the following fact sheets.'' -'t Note: 8iotreatm.ent 13MPs shall he designed to provide the maximum feasible infiltration and F,"I' based on criteria contained in Appendix X1.2. BIO -1: Bioretention with Underdrains Bioretention stormwater treatment facilities are landscaped shallow depressions that capture and filter stormwater runoff. These facilities function as a soil and plant -based filtration device that removes pollutants through a variety of physical, biological, and chemical treatment processes.'I'he facilities normally consist of a ponding area, mulch layer, planting soils, and plants. As stormwater passes down through the planting soil, pollutants are filtered, adsorbed, biodegraded, and sequestered by the soil and plants. Bioretention with an underdrain are utilized for areas with low permeability native soils or steep slopes where the underdrain system that routes the heated runoff to the storm drain system rather than depending entirely on infiltration. Bioretention must be designed without an underdrain in areas of high soil permeability. Feasibility Screening Considerations Y Rain gardens -with underdrains Vegetated media filter Do-wnspout planter boxes Bioretention Source: Geosyntec Consultants If there are no hazards associated with infiltration (such as groundwater concerns, contaminant plumes or geotechnical concerns); bioinfiltration facilities, which achieve partial infiltration; should be used to maximize infiltration. Not all 13\I13s presented in this section are considered "biofiltration B. Ills" under the SOLltll Orange County Permit Area. Biofiltration B.MPs are vegetated treat -and -release 13;\11's that Filter stormwater through amended soil media that is biologically active. support plant growth, and also promote infiltration andior ovapotrampirat ion. For projects in South (.)range County, the total Volume of storage in surface ponding and pores spaces is required to be at least 7(A of the remaining DC\' that the biofiltration BMP is designed to address. This pre%encs significant do\.n- sizing o1'B,\Ills which otherwise may be possible via routing calculations. Biotreatment B_\ Ills, that do not meet this definition are not considered to be 1.11) 13\113s, but may be used as treatment control or prc-treatment B. Ills. Sec Section 111.7 and Worksheet SOC- I for guidance. XI\--o December 20, 2013 9-151 TECHNICAL GUIDANCE DOCUMENT APPENDICES Bioretention with underdrain facilities should be lined if contaminant plumes or geotechnical concerns exist. If high groundwater is the reason for infiltration infeasibility, bioretention facilities with underdrains do not need to be lined. Opportunity Criteria Land use may include commercial, residential, mixed use, institutional, and subdivisions. Bioretention may also be applied in parking lot islands, cul-de-sacs, traffic circles, road shoulders, road medians, and next to buildings in planter boxes. Drainage area is15 5 acres. Area is available for infiltration. Site must have adequate relief between land surface and the stormwater conveyance system to permit vertical percolation through the soil media and collection and conveyance in underdrain to stormwater conveyance system. OC-Specirrc Design Criteria and Considerations El greater depth should not exceed 18 inches; fencing may be required if ponding depth is greater than 6 inches to mitigate drowning. The minimum soil depth is 2 feet (3 feet is preferred). El drawdown maximum drawdown time of the bioretention ponding area is 48 hours. The maximum drawdown time of the planting media and gravel drainage layer is 96 hours, if applicable. Infiltration pathways may need to be restricted due to the close proximity of roads, foundations, or other infrastructure. A geomembrane liner, or other equivalent water proofing, may be placed along the vertical walls to reduce lateral flows. This liner should have a minimum thickness of 30 mils. If infiltration in bioretention location is hazardous due to groundwater or geotechnical concerns, a geomembrane liner must be installed at the base of the bioretention facility. This liner should have a minimum thickness of 30 mils. ElThe planting media placed in the cell shall be designed per the recommendations contained in MISC-1: Planting/Storage Media Plant materials should be tolerant of summer drought, ponding fluctuations, and saturated soil conditions for 48 hours; native place species and/or hardy cultivars that are not invasive and do not require chemical inputs should be used to the maximum extent feasible The bioretention area should be covered with 2-4 inches (average 3 inches) or mulch at the start and an additional placement of 1-2 inches of mulch should be added annually. Underdrain should be sized with a 6 inch minimum diameter and have a 0.5% minimum slope. Underdrain should be slotted polyvinyl chloride (PVC) pipe; underdrain pipe should be more than 5 feet from tree locations (if space allows). A gravel blanket or bedding is required for the underdrain pipe(s). At least 0.5 feet of washed aggregate must be placed below, to the top, and to the sides of the underdrain pipe(s). An overflow device is required at the top of the bioretention area ponding depth. Dispersed flow or energy dissipation (i.e. splash rocks) for piped inlets should be provided at basin inlet to prevent erosion. Ponding area side slopes shall be no steeper than 3:1 (H:V) unless designed as a planter box BMP with appropriate consideration for trip and fall hazards. XIV -;1 December 20, 2013 9-152 TECHNICAL GUIDANCE DOCU\-(ENT APPENDICES Simple Sizing Method for Bioretention with Underdrain If the Simple Design Capture Volume Sizing Method described in Appendix 111.3.1 is used to size a bioretention with underdrain facility, the user selects the basin depth and then determines the appropriate surface area to capture the DCV. The sizing steps are as follows: Step 1: Determine DCV Calculate the DCV using the Simple Design Capture Volume Sizing Method described in Appendix 111.3.1. Step 2: Verify that the Ponding Depth will Draw Down within 48 Hours The ponding area drawdown time can be calculated using the following equation: DDp = (dp / KMEDIA) X 12 in/ft Where: DDp = time to drain ponded water, hours dp = depth of ponding above bioretention area, ft (not to exceed 1.5 ft) KMEDIA = media design infiltration rate, in/hr (equivalent to the media hydraulic conductivity with a factor of safety of 2; KMEDIA of 2.5 in/hr should be used unless other information is available) If the drawdown time exceeds 48 hours, adjust ponding depth and/or media infiltration rate until 48 hour drawdown time is achieved. Step 3: Determine the Depth of Water Filtered During Design Capture Storm The depth of water filtered during the design capture storm can be estimated as the amount routed through the media during the storm, or the ponding depth, whichever is smaller. dFILTERED — Minimum [ ((KNiEDIA X TROUTING)/12), dp] Where: dFILTERED = depth of water that may be considered to be filtered during the design storm event, ft KNIEDIA = media design infiltration rate, in/hr (equivalent to the media hydraulic conductivity with a factor of safety of 2; Kt,,IED,A of 2.5 in/hr should be used unless other information is available) TRouTING = storm duration that may be assumed for routing calculations; this should be assumed to be no greater than 3 hours. If the designer desires to account for further routing effects, the Capture Efficiency Method for Volume -Based, Constant Drawdown BMPs (See Appendix If 1.3.2) should be used. dp = depth of ponding above bioretention area, ft (not to exceed 1.5 ft) Step 4: Determine the Facility Surface Area A = DCV/ (dp + dFILTERED) Where: A = required area of bioretention facility, sq -ft DCV = design capture volume, cu -ft dFILTERED = depth of water that may be considered to be filtered during the design storm event, ft dp = depth of ponding above bioretention area, ft (not to exceed 1.5 ft) In South Orange County, the provided ponding plus pore volume must be checked to demonstrate that it is greater than 0.75 of the remaining DCV that this BMP is designed to address. See Section 111.7 and Worksheet SOC -1. X1\'-52 December 20, 2013 9-153 TECHMC:\L GliiD:-\NCE DOCUMENT APPENDICES Capture Efficiency Method for Bioretention with Underdrains If the bioretention geometry has already been defined and the user wishes to account more explicitly for routing, the user can determine the required footprint area using the Capture Efficiency Method for Volume -Based, Constant Drawdown BMPs (See Appendix 111.3.2) to determine the fraction of the DCV that must be provided to manage 80 percent of average annual runoff volume. This method accounts for drawdown time different than 48 hours. Step 1: Determine the drawdown time associated with the selected basin geometry DD = (dr / KDESIGN) x 12 in/ft Where: DD = time to completely drain infiltration basin ponding depth, hours dp= bioretention ponding depth, ft (should be less than or equal to 1.5 ft) Koesicr, = design media infiltration rate, in/hr (assume 2.5 inches per hour unless otherwise proposed) If drawdown is less than 3 hours, the drawdown time should be rounded to 3 hours or the Capture Efficiency Method for Flow -based BMPs (See Appendix 111.3.3) shall be used. Step 2: Determine the Required Adjusted DCV for this Drawdown Time Use the Capture Efficiency Method for Volume -Based, Constant Drawdown BMPs (See Appendix 111.3.2) to calculate the fraction of the DCV the basin must hold to achieve 80 percent capture of average annual stormwater runoff volume based on the basin drawdown time calculated above. Step 3: Determine the Basin Infiltrating Area Needed The required infiltrating area (i.e. the surface area of the top of the media layer) can be calculated using the following equation: A = Design Volume / dp Where. A = required infiltrating area, sq -ft (measured at the media surface) Design Volume = fraction of DCV, adjusted for drawdown, cu -ft (see Step 2) d„ = ponding depth of water stored in bioretention area, ft (from Step 1) This does not include the side slopes, access roads, etc. which would increase bioretention footprint. If the area required is greater than the selected basin area. adjust surface area or adjust ponding depth and recalculate required area until the required area is achieved. In South Orange County, the provided ponding plus pore volume must be checked to demonstrate that it is greater than 0.75 of the remaining DCV that this BMP is designed to address. See Section 111.7 and Worksheet SOC -1 Configuration for Use in a Treatment Train Bioretention areas may be preceeded in a treatment train by HSCs in the drainage area, which would reduce the required design volume of the bioretention cell. For example. bioretention could be used to manage overflow from a cistern. Bioretention areas can be used to provide pretreatment for underground infiltration systems Additional References for Design Guidance CASOA BMP Handbook for New and Redevelopment: htt :/www.cabniphandbooks.com/llocuments I)evelopment/TC-32.pdi XI\ --,3 I )(Y0111110 1' 21. 2111:; 9-154 TECHNICAL GUIDANCE DOCUMENT APPENDICES SMC LID Manual (pp 68): littp://www.lowimpactdevelopment.orWguest75/pub/All Projects/SoCaI LID iNlanual/SoCaIL ID Manual FINAL 040910.pdf Los Angeles County Stormwater BMP Design and Maintenance Manual, Chapter 5: http://dpw.facounty.gov/DES/design manuals/StormwaterBiYlPDesignandhlaintenance.pdf San Diego County LID Handbook Appendix 4 (Factsheet 7): littp://www.sdcountv.ca.gov/dplu/doc,/LID-Appendices.pdf Los Angeles Unified School District (LAUSD) Stormwater Technical Manual, Chapter 4: http://www.faschools.ore/emptovee/design/fs-studies-and- reports/download/white paper report material/Storm Water Technical Manual 2009-opt- red.pdf?version id=76975850 County of Los Angeles Low Impact Development Standards Manual, Chapter 5: http://dpw.lacoun!y.goy/wmd/LA County LID Manual.pdf XI\ --5'1 December 20, 2013 9-155 TECHNICAL GUIDANCE- DOCUiMENT APPENDICES PRC -2: Catch Basin Insert Fact Sheet Catch basin inserts are manufactured filters or Fabric placed in a drop inlet to remove sediment and debris and may, include sorbcnt media (oil absorbent pouches) to remove floating oils and grease. Catch basin inserts are selected specifically based upon the orientation of hhe inlet and du: expected sediment and debris loading. Opportunity Criteria Catch basin inserts come in such a wide range of configurations that it is practically impossible to generalize the expected performance. Inserts should mainly be used for catching coarse sediments and floatable trash and are effective as pretreatment in combination with other types of structures that are recognized as water ualit treatment v Drop Inlet Filters Catch Basin, Filters q Y BMPs. Trash and large objects can greatly reduce the effectiveness of catch basin inserts with respect to sediment and hydrocarbon capture. Catch basin inserts are applicable for drainage area that include parking lots, vehicle maintenance areas, and roadways with catch basins that discharge directly to a receiving water. OC -Specific Design Criteria and Considerations Frequent maintenance and the use of screens and grates to keep trash out may decrease the likelihood of clogging and prevent obstruction and bypass of incoming flows. Consult proprietors for specific criteria concerning the design of catch basin inserts. Catch basin inserts can be installed with specific media for pollutants of concern. Proprietary Manufacturer / Supplier Websites Table XIV.2 is a list of manufacturers that provide catch basin inserts. The inclusion of these manufacturers does not represent an endorse of their products. Other devices and manufacturers may be acceptable for pretreatment. Table XIV.2: Proprietary Catch Basin Insert Manufacturer Websites Device Manufacturer Website AbTech Industries Ultra - AbTech Industries www.abtechindustries.com Urban Filters"' Aquashield Aqua - Guardian T'11 Catch Basin Aquashield T'•' Inc. www.aquashieldinc.coin Insert Bowhead Environmental & Safety, Bowhead StreamGuard s'•' http://www.shopbowhead.con,/ Inc. Contech' Triton Catch Contech' Construction Products i Basin FilterT'• Inc. www.contech-c}?i.com Contech' Triton Curb Inlet ContecW' Construction Products Filter T11 Inc. www.contech-c mpco X I \,'-i8 December 20. 2013 9-156 TECHNICAL GUIDANCE DOCUMENT APPENDICES Table XIV?: Proprietary Catch Basin Insert Manufacturer Websites Device Manufacturer Website Contech`?'Triton Basin Storm Filter",' Contech` Construction Products Inc. www.contech-c i comP ' Contech''"' Curb Inlet StormFilterT'' Contech" Construction Products Inc. www.contech-cpi.coin Curb Inlet Basket SunTree Technologies Inc. www.sunti,eetecii.com Curb Inlet Grates EcoSense InternationalT1•1 littp://www.esosenseint.com/ DrainPac'"' United Storm Water, Inc. http://www.unitedstorinwater.com Grate Inlet Skimmer Box SunTree Technologies Inc. www.suntreetech.com KriStar FloGard+PLUS` KriStar Enterprises Inc. www.kristar.com KriStar FloGard° KriStar Enterprises Inc. www.kristar.com KriStar FloGard LoPro Matrix Filter KriStar Enterprises Inc. www.kristar.com Nyloplast Storm -PURE Catch Basin Insert Nyloplast Engineered Surface Drainage Products www.nyloplast-us.com StormBasin' FabCo Industries Inc. www.fabco-industries.com Stormdrain Solutions Interceptor FabCoo Industries Inc. www.fabco-industries.com Stormdrain Solutions Inceptor Stormdrain Solutions www.stormdrains.cotn StormPod`" FabCoO Industries Inc. www.fabco-industries.com Stormwater Filtration Systems EcoSense International""' http://www.ecosenseint.com/ Ultra-CurbGuard UltraTech International Inc. www.spillcontainment.com Ultra-DrainGuard`"' UltraTech International Inc. www.spillcontainment.com Ultra-GrateGuard`'' UltraTech International Inc. www.spillcontainment.com Ultra-GutterGuard'-" i UltraTech International Inc. www.spillcontainment.com Ultra-InletGuard` UltraTech International Inc. www•.spillcontainment.com XIS'-; 9 Decem her 20, 2073 9-157 ATTACHMENT B 9-158 is IIit a A A4 Did Ion Know? tun people Iscli-e that the largest sm,rcie of uvula pollution in urban areas tunics from speritir stain yrs +uch :Is lacon ivs :Inc{ ss'aagr treatment plants. In fact, the largest snout tall ir. pollution comes from ciq• sweets. neighhnrhoods, construction sites and parking Intl. 71his type of polluliun is somrtit v., adlcd "non -point source" pollution. There arc tn'a types of nuu-poiul source pollution: wnuuaer mud urban unwif pollution. Ia Stoniumler runoll results Irma Iniofall. When Iainualins tune large volunu•s of I9hrT nI riusv 1111 urbau Imuderq,s•. picking up poflut u 1 long the nae. U. han u1nofi r n h hppt n any time (,l the"anrhen .."i nave, usr Ii,Im i igatiun, s •hicle w.tshiug and rind sources carries u:wfh, Imus clippings and oder urban pollutants into storm drains. Miere Does It Go? MAn)ih ng the usr mtaide homes. vehicles and husinnsas - like matur oil, pninq pisdodcs, frnilizcrs anti rlranrn -nn be blown nr wAl'-d into storm drains A Hide water from a hwilLn hose or rain nn also wend rnatrrisis into storm drains. Stoat drains arc srpmatn from our sanitary srncr systems; unlike water in sanitan• setlem front sinks or toilets), hater in stunts dmins is not treatrd hrinre entering our Mtnnlay3. In a A t 11 ., q. .1 a I r. o 1 1, st a .,t nvn-1 4nn,nda„ nolgn:J —wiIiiJ -,%j awly,o 99IL•L6IFLCIFi) T11JSYi¢'lLlrl awpn{f Aunuldall nu14nyi a"!h^II^J +a15N nn{tha unnr7 aAnwq SSI.'•L6P LL91rvrYn,J,a,r luun,s boon•)a9uuo 9CIL•196 klL)' rpurl rqu%\ 6/4r 11[[169 I II1y nuv.uAlrJ/q,9w'.19 aumunsgw 6u.tF64 1110 Hill' !9u7Yrdel1!\ Ot ICSLS 1.111 Anuaau!Au3inultt a!I4nJ ^nn1L I(1as`.azrrcdr(FID q,oll sihl^d mm n5 LILT 4"--IUI C&O Auuaal.!au3 4J`'aiI RJS 6HV .119 0IL.) CII'Htfi. 61fi) Yuuaau19u7nuu,ndnumfurs CFI?I9C 1616)' - sn,razn,d Irl—n—P113 a,nn,up n"S 6661-%9 6161' cI!,r.Lr!S n1,cg nllaurll 1:11 i.F`I lit, 11,1 l .11 X11'1+,,1 r,luonld 11X1!115:: f l_I 111'511"114",1.,`.,n•_4h 11.1.1 In 1111(i1 In.nn.+nn pq rap,Yl 9fu111L1 nm n, gI'Sw npp,•j ui.n5 unuylC XI CITIfa i!r;! vgl.unuuun.. r•nuu,.•I1',•rl X!4'•191 111) t'114v ,!I4n,!u+,n.{,fir! 11ni1F1i1.n 46160 1u115'941ylgwu.\t cuuY.rl Lft KA)i 1616) ry 1n.11 +4111'.1 I!^s!\+'nnYrl n,!11: Lot Ir161 slay .y4nd 111!11 run Yr! I'l 6t 1,! n4rn I ,an:\71IJr.ryI l""I'lit o"':vr!1 II ILI Into J!P!1,J euyr,l rl Ila :Illi 1191..1.. anu..y npin,l c14ri l ri t:l5 IS 1 lit (il sl,n.11 _npp1J -!"I 11:15. 0. II IL! 1n.N +!PP,,i il—if ural"•nnlnlll 15115•1IL II I_1 n15„PP,,l avn.J nape':t f.SM.h7CL Iii L) nhq Euuaaudu3 +un'lp'j itIl-V6E sill' VIM 4plu,l laip••5'In •III11,3 I HSC'Hl i. flit lit sl lilt% 11I4nd Inu,l,un'(I 61-1w1r.i. 0 1 L I f71WHJL I IL) v1ay J!Igq{nJl\rn^:1 rKw.w .nllpyl 1"d roam] It!19L•61i1i t-ILI' i'.uu.un!Au3 r_ntl 67 t•":9L f1.1.1 .. n ,a4) 1-Vgs1 .'Wind 1u!a4en5• SC:o•:'iJ' Ifil'(i1' nL,i11M1IIt' Sauces of Aron -Point Sourer, Pollution Autoinmivc leaks and spills. v Improper uspo-i of used oil and other engine fluids. Aletak found in vehicle exhaust, weathered paint. rust, metal plating and tires. Peslieides and fen iwen from lawns, gardens any{ Farm, Inytmper disposal of cic;uu,." paint and paint Mo.' ll. 7Snil eto,iou and dust dt$ris hoe Ian(Lscgts': id construction acthities. N Litter, lawn clippings. animal ,ante.:uttl other urg:mic ma(w. moil stains an parking lots and paved snl lares. nn,4„Itna,r-.,n'nnz`n!n r.,p,LL,Ic,,,.nnR,n m pita tae pue anulJ yrs tap wn(nJ. umwp wu9uut {n "spew:vuldw!a1p pneJpw urger1 pts .,a e, Jnlr of pahcla, olJul Pue.al,n!ningr ..,m Au^u,r +oln AuryJra puc 1 an6 aTn •1 unnn wn!px of iql Aulpem numnala Irz11mraapuw puc lulus nl wuHo,J,a1e11uumy 4uu,r) af^rao a,u uuu'Amavn•sw t!nu" 9NIt go- (PIE) aamnii,aa r rr,an=ys On uuu'gnogpunpluuka•mwu nn,1 slnnlp+g aapae,d h unArlrzJq hAu aatcxm,ahy u nJ•f„nlaaY--l" 111— 001E-6tF (HD aaunm!orin^;J annP+s!'Hv unnaapm aunts p!µu puc wnra Auy,.(m'umna, onvllna ii—ulcip—q ploq—tut un stop—ju, m{ uuu•s{lgpmhn'.nnn ural m n,Ti'f.A 'I I-0 •4oI aSlle,p Jo •idaq nlamAS qj suet\ Patinatul IUI,J np+ni,rnit ,n',tnn Inht In 11111'!Il;1:l 11' IL 1 nnpn{l 8muvd pue ucnlq ,a,r,51 •fRl PIre Irzasp s;6naY1, a,r IPIrslI aw dmu'-tl'(lu!tl _nuu h!u.t In dnucal*mah`i uulnrunoJul IcnL,wnun.nr{ +gcudl.iunmuwl;)' Ilfi bort uyrrJ'spn*nl Ia1cv'sla.1 plcull Inrico;) ramnusa){,a1ep\anehy tn5'r 'cygvr,.tm IuaWssasvl, P,arfl IPtrat{ fr —insiun3 Ju n^y10 naRln'4ul.nl,'..Lu, P,e^g suamaSeuch; atsr,55 pale,9atul u,A'u•xgrt . lunuu .caul:».ply a{aoy Ju luamuedaq snr3'r,'dpraysw unprpilall apnitnd J^ maun,edao eo9va•ge•.tstw ryeng aavn^sag,R, an9'exrdapn'.tnsm 77Je Effect on the Ocean 1 % Ncinpointsource pollution can have a 5cTimis Impact nn water quality in Oruhge County. Pnllutastu from die slarnl drain s)Siem ern harm marine life ts well as coastal and Welland habitats. Thev can also degrade recreation areas such as hcadics, Imrbors and hays. SLOnnllaler quality management pro{,mms have been dmeloped throughout Orange County to educate and enmunge the public to protect seater quality, monitor runoff h5 the sioms drain %)•stent. inlssdga(c illCynl dumping and maintain sionn tains. Support from Orange County residents and ki-inesecs is needed to improve %tater quality and redure urban runnffpollutinn. Proper nuc and thipnsal of materials will help stop pollution before it reidws the %torm drain and the nrean. 9-159 The Ocean Begins at Your Front Door Never aAow pollutants to enter the street, gutter or storm. drain! Aeeomotntr 4ti nYul gtrasc r;I4It1Y'.}11I11S It1.iLUt xC1C I-', ra. R1. Sci6e pd dust y Q+ may i(i( i Aeeomotntr 4ti nYul gtrasc r;I4It1Y'.}11I11S It1.iLUt xC1C 1i dlranmg c!¢m crb Sci6e pd dust Do your part to Prevent water pollution in our creebs, rivers, bays and ocean. Clean beaches and healthy creeks, rivers, bays and ocean are important to Orange County, However, not: properly disposing of household hazardous waste can lead to water pollution.. Batteries, electronics, paint, oil, gardening chemicals, cleaners and other hazardous materials cannot be 5 thrown in the trash. They also must F never be poured .or thrown into yards; sidewalks, driveways, gutters or streets. Rain or other water could Wash the materials into the storm drain and eventually into NEVER DISPOSE our waterways OF HOUSEHOLD and the ocean. HAZARDOUSInaddition, hazardous WASTE IN THE waste must not TRASH, STREET, be poured in the sanitary GUTTER, sewers, (sinks STORM DRAIN and toilets). OR SEWER. Help Prevent Ocean Pollution: Proper Disposal of Household ous Waste The -Ocean eg n' 2 a Your Front Door ORANGE COUNTY Leftover household products L1121L contain corrosive, Loxic, ignitable, ol- reaCLlve ingredients are considered to be "household hazardous 11'aSte" or "1- HW." HFRY can be found tllr011y11OLIL yOLII' 110111e, including the bathroom, kitchen, laundry room and garage. Disposal of I-IHW down the drain, on the ground, into storm drains, or in the trash IS illegal and tllrsafe. Proper disposal of HIf\1' is actually easy. Simply drop them off at a I-louschold Hazardous \-Paste Collection Center 111 -IWC:(:) for 1i-ee disposal and recycling. klany materials including anti -freeze, latex - based paint, nloLor oil and batteries can be recycled. Some centers have a "Stop & Swap" program ghat lets yon tale partially IISCd home., gal -dell, and allL011lohile products free of charge. There are four 1- HN,VCCs in Orange County: Anaheim: .................. 1071 N. Blue Gunn SL I-Ituitington Beach:......... 1712.1 Nichols SL Irvine: ......................... _ 6411 Oak Canvon Siul Juan Capistrano:... 32250 La Pala Ave Centers are open Tuesday -Saturday, 9 a.m - 3 p.m. Centers are closed on rainy days and major holidays. For more information, call 714) 834-6752 or visit www.oclandfills.com. Common household hazardous wastes Batteries Paint and paint products Adhesives Dr-ain openers Household cleaning products Wood and metal cleaners and polishes Pesticides Fungicides/wood preservatives Automotive products (antifreeze, motor oil, fluids) Grease and rust solvents Fluorescent lamps Mercury (thermometers & thermostats) All forms of electronic waste including cornputers and inicrowaves Pool & spa chemicals Cleaners Medications Propane (camping- & BBQ) Mercury -containing lamps Television & monitors (CRTs, flatscreens) Tibbs for household hazardous waste Never dispose of III -[W in the trash, street, goner, Storm drain or server. Kcep these materials in closed, labeled containers and store maLerials indoors or under a cover. E When possible, use norl-hazarClolls products. Reuse products whenever possible or share with family and friends. Purchase only as much Of a product as yOLI'll need. Empty contalncrs may be disposed of in Lhe trash. HHW earl be harn11Lt1 LO I1LIRIU S, pets and the envirorinlent.. Report enler;yencies to 911. 9-162 l.or more information, please call the Orange County Stormwater Program at 1 -877 -89 -SPILL (1-877-597-7435) or visit www. ocwatersheds. com UCCE Master Gardener Hotline: 714) 708-1646 To report a spill, Call dIe Orange Countv 24 -Hour Nater Pollution Problem Reporting Hotline 1 -877 -89 -SPILL (1-877-897-7,1.51)). For emergencies, dial 911. Thr tills conulinc([ ill this broctnur provide useful information to help prevent water pollution while landscaping or gardeuiug.. If you have other St I'eS60 11S, I)ICaSC CUllUlet. 4otll' Cil1'`s slormwater rcprescntilt ivcs or call the Or:ull-c County Slornnvatcr 1'ro ranl. Primcd un RrctvIcd P:yu:r S! 41f r- VIX at Your Front Door,. P R O J E C T' P-At4flo P R E V E N T 1 O A iy, lAy 9-163 Never allow gardening products or polluted water to enter the street, gutter or storm draill. General Landscaping' S Protect stockpiles and materials froin wind and rain by SLOI-iirg them under Larps or secured plastic. sheeting. Prevent erosion ofslopes by planting fast-gro11'Ing, dense.„round covering plants. These will shield and bind the soil. Plant native vegetation _ to reduce the a1nOurlt of Water, fertilizers, and pesticide applied to thej. landscape. Never Apply pesticides or fertilizers when rain is predicted Witllirl the next 48 hours. Garden & Lawn Maintenance Do 1101. OVel-WaLer. Use 11.1-lgatlon practices Such as drip irrigation, soaker hoses or micro splay systems. Periodically inspect and fix leaks and misdirected sprinklers. Do not rake or blow leaves, clippings or pruning waste into the street, gutter or storm drain. Instead, dispose of green waste by composting, hauling it to a permitted landfill, or recycling it through your city's program. Use slow-release fertilizers to minimize leaching, and use organic fertilizers. Read labels and use only as directed. Do riot over -apply pesticides or fertilizers. Apply to spots as needed, lather than blanketing an entire area. Store pesticides, fertilizers and other chemicals in a dry covered area to prevent exposure that may result in the deterioration of containers and Packaging. N Rinse empty pesticide containers and re -use rinse water as you would use the product. Do not dump rinse water down storm drains. Dispose of empty containers in the ti -ash. When available, use non-toxic alternatives to traditional pesticides, and use pesticides specifically designed to control the pest you are targeting. For Vlore information, visit www ipm.ucdavis.edu. If fertilizer is spilled, sweep up the spill before irrigating. If the spill is liquid, apply an absorbent material such as cat litter, and then sweep it up and dispose of it in the trash. Take unwanted pesticides to a Household Hazardous Waste Collection Center to be recycled. Locations are provided below. 9-164 Clean beaches and healthy creeks, rivers, bays, and ocean are important to Orange County. However, many common activities can lead to water pollution if you're not careful. Swimming pools and spas are common in Orange County, but they must he maintained properly to guarantee that chemicals aren't allowed to enter the street, where they can flow into the storm drains and then into the waterways. Unlike water in sanitary sewers (from sinks and, toilets), water in storm drains is not treated before entering our waterways. You would never dump pool chemicals into the ocean, so don't let it enter the storm drains. Follow these easy tips to help prevent water pollution. FIcIp Prevent Ocean Pollution: Tips for Pool Maintenance Many pools are plumbed to allow the Pool to drain directly to the sanitary sewer. If yours is not, follow these: instructions for disposing of pool and Spit water. Acceptable and Pr- ferred Method of Disposal NAVhen you cannot dispose of pool water in the sanitary sewer, the release of dechlorinated swimming pool water is allowed if all of these Lips are followed: Tyle residual chlorine does not exceed 0.1 mg/l (parts per million). MThe pH is between 6.5 and 8.5. Thc water is free of any unusual coloration, dirt or algae. IN here is no discharge of filter media I'lirre is no discharge of acid cleaning wastes. Some cities may have ordinances that do not allow pool water to be disposed into a storm drain. Check with your City. How to Know if You're Following the Standards You can find out how much chlorine is in your water by using a pool testing kit. Excess chlorine can be removed by discontinuing the use of chlorine for a few days prior to discharge or by purchasing dechlorinating chemicals from a local pool supply company. Always make sure to follow the instructions that come with any products you use. la1, t Doing Your Part By complying with these guidelines, you will make a significant contribution toward keeping pollutants out. of Orange County's creeks, streams, rivers, bays and the ocean. This helps to protect oranisms that are sensitive to pool Chemicals, and helps to maintain the health of our environment. P R O J C C T P A C V C N T I O N L Jf t ATTACHMENT C 9-167 Operations and Maintenance (ODM) Plan for 215 RIVERSIDE AVENUE Por. Lot D, Tract No. 919 APN 049-103-17 Newport Beach, California Overall Responsible Party/Owner: CANNERY PARTNERS LLC 660 Newport Center Drive, Suite 200 Newport Beach, CA 92660 Contact: Gary 7abara (949) 999-4545 Exhibit B, Operations and Maintenance Plan BMP BMP Name and BMP Implementation, Implementation, Maintenance, and Inspection Person or Entity with Operation & Applicable? Maintenance and Inspection Procedures Frequency and Schedule Maintenance ResponsibilityYes/No Non -Structural Source Control BMPs N1. Education for Property Owners, Tenants and Owner shall keep up to date with BMP Owner Occupants requirements, and be responsible for educating Practical information materials will be provided to the first maintenance personnel; As required. Yes residents/occupants/tenants on general housekeeping practices that contribute to the protection of stormwater quality. These materials will be initially developed and provided to first residentsloccupants/ten ants by the developer. No N2. Activity Restrictions N3. Common Area Landscape Management Keep garden areas clean, planted, and weed free. Owner or contracted maintenance Identify on-going landscape maintenance requirements that Weekly. personnel are consistent with those in the County Water Conservation Yes Resolution (or city equivalent) that include fertilizer and/or pesticide usage consistent with Management Guidelines for Use of Fertilizers (DAMP Section 5.5). Statements regarding the specific applicable guidelines must be included in the project WQMP. N4, BMP Maintenance Visual Inspection, perform more thorough Owner or contracted maintenance Yes The project WQMP shall identify responsibility for inspection if ponding water sits for more than 48 personnel implementation of each non-structural BMP and scheduled hours. Twice yearly and immediately following cleaning and/or maintenance of all structural BMP facilities. each storm event. No N5. Title 22 CCR Compliance No N6. Local Water Quality Permit Compliance No N7. Spill Contingency Plan No N8. Underground Storage Tank Compliance No N9. Hazardous Materials Disclosure Compliance No N10. Uniform Fire Code Im lementation of Exhibit B, Operations and Maintenance Plan Page 2 of 7 BMP BMP Name and BMP Implementation, Implementation, Maintenance, and Inspection Person or Entity with Operation & Applicable? Maintenance and Inspection Procedures Frequency and Schedule Maintenance ResponsibilityYes/No N11. Common Area Litter Control Keep site clean of litter. Weekly. Owner or contracted maintenance The owner may contract with their landscape maintenance personnel firms to provide this service during regularly scheduled Yes maintenance, which should consist of litter patrol, emptying of trash receptacles in common areas, and noting trash disposal violations by tenantsihomeowners or businesses and reporting the violations to the ownerlPOA for investigation. No N12. Employee Training No N13. Housekeeping of Loading Docks N14. Common Area Catch Basin Inspection Inspect drain inlets and catch basins. Keep inlet Owner or contracted maintenance The owner is required to have at least 80 percent of drainage covers clean. Weekly. personnel facilities inspected, cleaned and maintained on an annual basis with 100 percent of the facilities included in a two year Yes period. Cleaning should take place in the late summerlearly fall prior to the start of the rainy season. Drainage facilities include catch basins (storm drain inlets), detention basins, retention basins, sediment basins, open drainage channels and lift stations. Records should be kept to document the annual maintenance. No N15. Street Sweeping Private Streets and Parking Lots Structural Source Control BMPs S1. Provide Storm Drain System Stenciling and Signage Ensure that all catch basins are stencilled "No Owner or contracted maintenance Provide stenciling or labeling of all storm drain inlets and Dumping — Drains To Ocean." personnel Yes catch basins, constructed or modified, within the project area with prohibitive language andlor graphical icons, which discoura e illegal dumping. No S2. Design Outdoor Hazardous Material Storage Areas to Reduce Pollutant Introduction 9-170 Exhibit B, Operations and Maintenance Plan Page 3 of 7 BMP BMP Name and BMP Implementation, Implementation, Maintenance, and Inspection Person or Entity with Operation & Applicable? Maintenance and Inspection Procedures Frequency and Schedule Maintenance ResponsibilityYes/No S3. Design Trash Enclosures to Reduce Pollutant Keep trash storage areas clean and orderly. Owner or contracted maintenanceIntroductionWeekly. personnel Design trash storage areas to reduce pollutant introduction. Yes All trash container areas shall be paved with an impervious surface, designed not to allow run-on, screened or walled to prevent off-site transport of trash, and be provided with a roof or awning to revent direct precipitation. S4. Use Efficient Irrigation Systems and Landscape Ensure that sprinklers are working properly and Owner or contracted maintenance Design minimize unnecessary irrigation. Weekly. personnel Projects shall design the timing and application methods of irrigation water to minimize the runoff of excessive irrigation Yes water into the municipal storm drain system. Additionally, permittee shall: Employ rain shutoff devices, design irrigation systems to each landscape areas specific requirements, use flow reducers, group plants with similar water requirements together. No S5. Protect Slopes and Channels No S6. Loading Dock Areas No S7. Maintenance Bas and Docks No S8. Vehicle Wash Areas No S9. Outdoor Processing Areas No S10. Equipment Wash Areas No S11. Fueling Areas No S12. Site Design and Landscape Planning No S13. Wash Water Controls for Food Preparation Areas No S14. Communi Car Wash Racks 9-171 Exhibit B, Operations and Maintenance Plan Page 4 of 7 FFFBMP Name and BMP Implementation, Implementation, Maintenance, and Inspection Person or Entity with Operation & Maintenance and Inspection Procedures Frequency and Schedule Maintenance Responsibility Low Impact Development BMPs Filter Insert (Treatment). TRT -2 Once a year. Refer to Manufacturer's Owner via maintenance contractors Filter Insert Replacement/Rotation 0&M plan on pages 36-39 for details. Remove Sediment and debris. Three times per year and after storm events. Refer to Manufacturer's 0&M plan on pages 36-39 for details. Bio -retention Planter (Biotreatment). BIO -1 Visual inspection for debris, standing water. Twice yearly and after each storm event. Owner via maintenance contractors Gravel/media replacement. Every 10 years as required. Filter fabric Replacement Once a year as required. 9-172 Exhibit B, Operations and Maintenance Plan GENERAL SPECIFICATIONS FOR MAINTENANCE OF TSERIVSn' CATCFI BASIN INSERT FILTERS POST-COMVI'RUC770NINS'1'ALI.A TION) SCOPE: Federal. Slate and Local Cleve Wa(er Act regulations and those of insurance carriers require Thal stommhucr filtration systems be maintained and serviced on it recurring basis, The intent of lite regulations is to ensure that the systems, on a continuing basis. efficiently remove pollutants from stormwatcr nmoff thereby preventing pollution of the nal ion's water resources. These SpeciGcalions apple to the T-Scriesnt Catch Basin hsert Filter. RECOMMENDED FREQUENCY OF SERVICE: Dmimage Protection Systems (DPS) recommends Thal installed T-Series'a Catch Basin Insert Filters be serviced on it recurring basis. Ultimately. the frequency depends on the amount of runoff. pollutant loading and interference front debris (leaves_ vegetation, ams. paper_ etc.): however, it is recommended Mai each installation be serviced a ntinintwu of three times per year, with it change of filter medium once per year. DPS technicians are available to do an on-site evaluation. upon request. RECOMMENDED TMWNG OF SERVICE: DPS guidelines for Ute timing of sen•icc are as follows: 1. For arvaas wills it definite rairm season: Prior to, during and following the r<aim, season, 2. For ares subject to year-round rainfall: Ona recurring basis (al lest three times per year). For areas with winter snow and summer min: Prior to andjusl after the snow salon and during the summer rain season. 4. For installed devices not subject to the elements (washracks, parking ,garages, etc.): On it recurring basis (no less than tine times per year). SERVICE PROCEDURES: I. The service shall co nincnce with collection and removal of sediment and debris (litter. Icaves. papers. riots. ete.) ;tad broom sweeping around the drainage inlel. Accumula(ed materials shall be placed inn DOT approved container for later disposal. 2. The catch basin shall be visually aspected for defects and possible illegal dumping. If illegal dumping has occurred, the proper atnhorities and property owner representative shall be notified as soon as practicable. 3. The catch basin gruc shall be removed and set to one side. Using an industrial vacuum. alae collected auucrials shall be removed from the liner. (Note: DPS uses a tnick-mot incl vacuum for smieing T-Serics''acalch basin inserts.) 4. Wlicn all of the collected materials bank been removed, the filter medium pouches, if used. shall be removed by unsnapping the loiter from the D -ring and set to one side. The faller liner, gaskets. stainless steel frame and mounting brackets. etc. shall be inspected for continued sen'iceabilil.. Minor damage or defects found shall be corrected on -lac -spot audit notation made on lie Maintenance Record, More extensive deficiencies that affect the efficiency of the filter (torn liner. etc.), if approved by the customer represemaliye. will be corrected and an invoice submilled to the representative along with Lite Maintenance Record. The falter niediwn pouches shall be inspected for defects and continued serviceability and replaced as necessary and the pouch tethers re-altachcd to the liner's D -ring. Secbelow. 6. The gmle shall be replaced. Attachments 9-173 LXC1L4.NGE AND DISPOSAL OF EXPOSED 11LTER MEDIUM AND COLLECTED DEBRIS The frequency of filter medium pouch exchange will he in accordance with the e sting DPS -Customer Maintenance Contract DPS recommends that the medium be changed at least once per year. During the appropriate service, or if so determined by the service technician during a non-scheduled service, the filter medium pouches will be replaced with new pouches and the exposed pouches placed in the LX)"f approved container, along with the exposed debris. Once the c..x"cd pouches and debris have been placed in the container, DNS has possession and must dispose of it in accordance with local, state and federal agency requirements. Note: As the generator, the landowner is a h1mately responsible for the proper disposal of the crposed filter medium and debris. Because the materials likely contain petroleum hv&ocarbons, heaiy metals and other harmJLl pollurants, the materials must be treated as an EP.4 Glass 2 Hazardous {Paste and properly disposed of. DPSreUvvss the landowner of the acetal rBsposal task, and provides carh'frcalion of its completion in accordance with appropriate regulations. DPS also has the capability of servicing all manner of catch basin inserts and catch basins without Inserts, underground oiltwater seporators, stormwater interceptors and other such de-tiees. All DPS personnel aro highly qualified technicians and are confined space trained and certified. Call us at 888) 9504816 for further information and aubtance. 9-174 Required Permits This section must list any permits required for the implementation, operation, and maintenance of the BMPs. Possible examples are: Permits for connection to sanitary sewer Permits from California Department of Fish and Game Encroachment permits If no permits are required, a statement to that effect should be made. Forms to Record BMP Implementation, Maintenance, and Inspection The form that will be used to record implementation, maintenance, and inspection of BMPs is attached. Recordkeeping All records must be maintained for at least five (5) years and must be made available for review upon request. 9-175 RECORD OF BMP IMPLEMENTATION, MAINTENANCE, AND INSPECTION Today's Date: Name of Person Performing Activity Printed): Signature: BMP Name Brief Description of Implementation, Maintenance, and As Shown in 0&M Plan) I Inspection Activity Performed 9-176 Exhibit 4 Water and Wastewater Generation Memorandum 9-177 WATER DEMAND MEMORANDUM 215 Riverside Avenue Newport Beach, CA 92663 PREPARED BY: Fuscoe Engineering, Inc. 16795 Von Karman, Suite 100 Irvine, CA 92606 949) 474-1960 Project Number: 1843-002-01 Project Manager: Joshua Ruiz Date Prepared: June 5, 2019 9-178 Water Demand Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA June 5, 2019 Purpose The purpose of this report is to present the results of the evaluation of the water demand analysis for the 215 Riverside Avenue project. Project Site Location The existing site is located in the City of Newport Beach, CA. The site is to the northwest of the intersection of Riverside Avenue and Avon Street. Existing Conditions The site area is 0.4 acre. Based on our review, the existing two-story building currently serves as office space, along with a restaurant. Sheet G7 -W of the City of Newport Beach water atlas map shows that there is an existing 8" waterline in Avon Street along with a 12" waterline in Riverside Avenue, fronting the property. A fire hydrant flow test was performed for a nearby project, located on WCH approximately 2,000 feet easterly from the 215 Riverside Avenue project. A copy of the G7 -W water atlas map is included as Attachment 1. The fire hydrant location (address) and test results are presented on the following page. 9-179 Water Demand Memorandum 215 RIVERSIDE AVENUE NewportBeach, CA June 5, 2019 AMOUNTPAID: S9r.U.00 CHECK NO; TEST NO: PROJECT' PROTECT LOCATION: TEST CONDUCTED FOR: TEST PERFORMED BY: TEST W-ITNESSED BY: CITY OF NEWPORT BEACH UTILITIES DEPARTMENT FIRE HYDRANT FLOW TEST 1200 W. COAST HWY. FUSCOE ENGINEERING BULLMAN, AU01111 FH st INOM Sda at ROamvarl DATE: w-oti;2614 TIME: 6:00 AM WEATHER: CLEAR FIELD OBSERVATIONS AND FLOW DATA STATIC HYDRANT 0: I0H LOCATION: 11441 W. COAST HWY. Fal MANVI'ACTURER: JONES NUMBER A SIZE OF OUTI..ETS: 2.2,j" I3' STATIC PRESSURE. I Ps , psi). PRE -FLOW. 6R RESIDUAL PRESSURE. Wt. psi) FLOWING: b(I FLOW HYDRANT a : 409 LOCATION: 22IH) W. COAST HWY. Fal MANUFACRJRER: AVK NL:MRFR N SIZF.OF OUTLETS: 2.2.x' 1•4' STATIC PRESSURE. PRE -FLOW (INFO ONLY. NOT FORTEST CALL'S) . F!H UUTLET SIZE 1 2.5 ur 4.01: 175- 1 111. mchal FLOW LOSS COEFFICIENT • TUBE C-1 0 BUTT C-0.9 0.9 PITOT GAUGF READING L p. pm 1: 33 OBSERVED THE uBSL-RI'ED FI.UR' FRC111 I MDR%NT OUT11T IS C V.CCL.tTFD FROM'ITIE rOLL WING EQL A'I'LON: Y a = ?9.83(Cd 1 V:'I-IFRK Q 15 TH1'ON5F:R4F.D1=1.(IIt I!SGP\I;dINTTII'(ATLIT DI:I\IF.TI•.ItIVIW.P LS'rulf•.Pmrr(..11-(;I- PRFtiu.'RF.IN 1$F. (ND C 15 TFIF FlfAV I Q%'l (_nFFfICIFN'T . (: - I.O FSR Fl CTR' TL'RF.S \NDC —1'( FOR HI.-rT FL( AV RLIDLNGS , OBSERVED FLOW JQs, gpm): 961 GPNf DISCI IARGE C-ILC_N. "Il IE DISCI JAM& TUIL A GIVEN I -IRE I Il'DILIN'I' CAN HE MAT RNIMED PIC 1\I I I IE 1-( U.oWlm; EI)L'ATIUN USING ULL INlTLU_: S'rA'llC i WA LFR PIL'SSLIIE AND 1'1IF. RbSIDI: Al. DYNAMIC. ti'.5Tl-.R 1-LtI:551 IRI': jP 41L -.RL; Q,ST TTI( IM RFNII)1. %1. 1 1., "rNL FLl)U IN(:PN; %%I) 1- .1r%11( -.I TR R1=_511)( M. 15 TI IF. NU. SA'RI-' IN TSL N( Crl.: .\ U 1'SI it R( IP I., REI H IRED H IA 'i 51.R) TFI- CALCULATED FLOW AT 10 psi (Qr, gpmI: '_S3e (;Phf 7 9-180 Water Demand Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA June 5, 2019 Proposed Development The proposed development includes demolition of the existing building, and construction of the new retail building. In addition, according to the Preliminary Utility Plan Attachment 3), a new water service is proposed, to replace the existing service, with the assumption that the condition of the existing service is not satisfactory. The total proposed commercial building area will be 2,772 square feet. The area calculations for the proposed project are as follows: Main Level: 2"d Level: Commercial Area Commercial Area 1 54 sf 1 54 sf 2 1215 sf 2 1215 sf 3 117 sf 3 117 sf Total- 1,386 sf Total. 1,386 sf 3 9-181 Water Demand Memorandum 215 RIVERSIDE AVENUE NewportBeach, CA June 5, 2019 Water Demand Calculations The water demand for the existing site was estimated based the CC Appeal of PC Approval of Use Permit for Nesai Restaurant (see Attachment 4), along with Irvine Ranch Water District (IRWD) demand coefficients (see Attachment 2) for the existing development, which include the following: First Floor Restaurant; 2,910 square feet (220 gal/ksf/day) = 640 gallons/day Second Floor Office; 2,830 square feet (60 gal/ksf/day) = 170 gallons/day Third Floor Office; 2,316 square feet (60 gal/ksf/day) = 139 gallons/day Total Existing Water Demand = 949 gallons/day = 1.1 ac -ft per year The water demand for the proposed development is based on IRWD demand coefficient for commercial development. The IRWD value of 220 gallons/ksf/day was used, along with the total area calculation of 2,772 square feet. The water demand calculations are as follows: 2,772 square feet (220 gal/ksf/day) = 610 gallons/day Total Proposed Water Demand = 610 gallons/day = 0.7 ac -ft per year. Conclusion The water demand calculations show that the proposed project will require approximately 0.7 ac -ft of water per year. This will be a reduction from the existing water demand of 1.1 ac -ft per year. It is proposed to replace the existing service with a new water service line. The proposed new service location is shown on the Preliminary Utility Plan (Attachment 3). Attachments: I- Water Atlas Map G7 -W 2. IRWD Water Demand Factors 3. Preliminary Utility Plan 4. Pages 249 & 281 from CC Appeal of PC Approval for Nesai Restaurant H 9-182 ATTACHMENT 1 Water Atlas Map G7 -W Water Demand Memo — 215 Riverside Avenue Newport Beach, C4 9-183 9-184 ATTACHMENT 2 IRWD Water Demand Factors Water Demand Memo - 215 Riverside Avenue Newport Beach, CA 9-185 Water Use Factors Table 3-1 Lund Use and N ate)• U e Factors 1100 Resideatia! Dt!!dc GalID(LIDav GahAclDav 1111 Res - Rural Density Orange 0.30 300 750 1,050 5 2,800 1121 Res - Estate Density Orange 1.20 300 300 600 8 2,900 1131 Res - Low Density Orange 4.00 300 300 600 15 2,900 1 141 Res - Low -Medium Density Orange 10.50 200 100 300 22 3,300 1161 Res- Medium Density Orange 19.50 225 185 410 17 3,100 1122 Res - Estate Density Imine 0.50 300 600 900 7 2,800 1 132 Res - Low Density Irvine 3.00 225 I80 405 16 3,000 1162 Res - Medium Density Irvine 7.50 200 110 310 20 3,100 1 172 Res - Medium -High Density Irvine 17.50 165 15 180 25 3.600 1182 Res- High Density Irvine 32.50 180 20 200 20 3,300 1192 Res - High -Rise Density Imine 40 180 20 200 20 3,300 1133 Res - Low Density Newport Beach 1.00 250 190 440 17 3,100 1153 Res - Medium -Low Density Newport Beach 2.75 250 200 450 10 2,800 1163 Res - Medium Density Newport Beach 5.00 190 60 250 22 3,300 1 183 Res - High Density Newport Beach 12.25 155 20 175 25 3,600 1134 Res - Low Density PC Tustin 4.50 225 185 410 17 3,100 1164 Res - Medium Density PC Tustin 11.80 155 15 170 25 3,600 1 184 Res - High Density PC Tustin 17.40 135 15 150 15 3,700 1 115 Res - Rural Density County 0.26 300 750 1,050 5 2,800 1135 Res - Suburban Density County 9.25 225 180 405 16 3,000 1 175 Res - Urban Density County 29.00 165 15 180 25 3,600 1126 Res - Estate Density Lake Forest 0:50 300 600 900 7 2,800 1136 Res - Low Density Lake Forest 3.00 225 180 405 16 3.000 1166 Res - Medium Densin, Lake Forest 7.50 200 110 310 20 3,100 1 176 Res - Medium -High Density Lake Forest 17.50 165 15 180 25 3.600 1 186 Res - High Density Lake Forest 32.50 180 20 200 20 3,300 1200 Commercial K3F1;lc GaZ,KSF'Dav Gal/A Dav 1210 Comm - General Office 25.00 56 4 60 30 4,000 1221 Comm - Community 9.09 209 11 30 3,500 1222 Comm - Regional 1053 180.5 9.5 190 20 5,000 1230 Comm - Recreation 8.33 54 6 60 30 1,100 1240 Comm - Institutional 8.88 39.38 5.62 45 50 2,750 1244 Comm - Hospital 8.70 21850 11.50 230 25 2,850 1260 Comm - School 13.33 14.25 0.75 15 50 2.500 1273 Comm - Military Air Field 1300 Iitdtrstrial KSF:Ac Gah KSF,Dav Cral.4e!Dav 1310 Industrial - Light 25.00 56 4 60 25 4.000 1320 Industrial - Heavy 25.00 4,500 500 5,000 25 4,000 Open Space & Orker Ge4!Ac1'Dav 1820 Park - Community 90 3,400 1830 Park - Regional 85 2,100 2100 AG -Low-Irrigated t00 1,800 2110 AG - Low -Irrigated (TIC) 100 1,800 2200 AG - High -Irrigated 100 3,100 2210 AG - I-ligh-Irrigated (TIC) 100 3.100 Note: The database includes the following land use codes that do not use set factors or do not generate .eater demands: 0 = arca not served by IR% D; 1411 Airports: 1413 Freewav and Major Roads; 1850 = Park -Wildlife Preserve: 1880 = Park -Open Space (Rec); 1900 = Vacant; 4100 Water Body; 9100-9199 = Mixed Use (uses a combination of factors) Hater Resources ;Uasler Plan 3_5 17 Mi )3 C'!:1rcclaur'IfRUP2002'Ch3;chapter31tsa0716.fn) 9-186 ATTACHMENT 3 Preliminary Utility Plan Water Demand Memo - 215 Riverside Avenue Newport Beach, CA 9-187 CITY OF NEWPORT BEACH NOTES EASEMENT NOTES SCOPE OF WORK TOALDEVELOPMENTSTATISTtCS NOTE TO CONTRACTOR a----------- 01 DTI ji Pl- 19 pt— IT, z Z AVON STREET z Dema C-1 9-188 ATTACHMENT 4 Pages 249 & 261 from CC Appeal of PC Approval for Nesai Restaurant Water Demand Memo — 215 Riverside Avenue Newport Beach, CA 9-189 9-190 YmcDI[R I IOC I YlO i ANIIIM6 i D[SION SI•••n•sn q•ne• El6Tt11D PIAMwO \ C F111 Oe nI• {1!{1 FI. i.... 0} •}{{ I EXSTM FLAM D rr+ 6 6 T 7 9 1 = M1Mpmmm AI I MTEPLAM6 PAPJQ4G LOT LS TO U ON RECORD Q \,• EAI8TIN0 PLAklm I ECWPOGPARKWLOI 100FLWow AN ON REOdO '\l 1 16 5 l 1! 13 L2 10 11 OM'E:tv1Y t'! I, O3SMGT E'JIBIY101.•. 11L1 m Cc cc n z NZ AAEA cuts. o•4LOTSOIl1AEFWtAGE10.FB1$0t{WE F{tl 1.1AVD MF.AA-pS=LOIARFAJ-IAB7I OS-4MSMME FEET .\ SITE aW Lu BIa.D17•G AAEA FN I ONORQMfOFFMZMD SO. Fl. SECOND Ft00R 1 SO. FT, ` \ a I 5 N30 ffM X3 Wi1QmRmit6FICQ2710sD. Fl. TOTAL eDae sa Pr.- SA650.FF. aB1W6UFT,PA.R OIC A-1.0 9-190 07t13/2012 Main Patio 6ozsqft 30 seats Community Development Department ' Planning Division DRSWWA^_______` SEWER CAPACITY MEMORANDUM 215 Riverside Avenue Newport Beach, CA 92663 PREPARED BY: Fuscoe Engineering, Inc. 16795 Von Korman, Suite 100 Irvine, CA 92606 949) 474-1960 Project Number: 1843-002-01 Project Manager: Joshua Ruiz Date Prepared: June 5, 2019 9-192 Sewer Capacity Memorandum 2l- RIVERSIDE AVENUE Newport Beach, CA June 5, 2019 Purpose The purpose of this report is to present the results of the evaluation of the sewer capacity analysis for the 215 Riverside Avenue project. Project Site Location The existing site is located in the City of Newport Beach, CA. The site is to the northwest of the intersection of Riverside Avenue and Avon Street. Existing Conditions The site area is 0.4 acre. Based on our review, the existing two-story building currently serves as office space, along with a restaurant. Based on our review of CC Appeal of PC Approval of Use Permit for Nesai Restaurant (see Attachment 1), the following is the usage of the existing site: First -Floor Restaurant (107 seats) Second Floor Office Space (2,830 square feet) Third Floor Office Space (2,31 6 square feet) Based on our review of the City of Newport Beach GIS sewer atlas map (see Attachment 2), it appears that the existing wastewater is directed to an existing 6" City sewer line in Avon Street. From there, the line drains to the existing 8" sewer line in Riverside Avenue. The line continues southerly, and becomes a 12" diameter line at the southerly end of Riverside Avenue, and then connects to the existing Orange County Sanitation District OCSD) sewer line in West Coast Highway (WCH). 9-193 Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA June 5, 2019 Proposed Devefopmenf The proposed development includes demolition of the existing building, and construction of the new retail building. According to the Preliminary Utility Plan (see Attachment 4) the existing sewer lateral in Avon Street will be replaced with a new lateral cleanout. The total proposed commercial building area will be 2,772 square feet. The area calculations for the proposed project are as follows: Main Level: Commercial Area 1 54 sf 2 1215 sf 3 117 sf Total, 1,386 sf 2nd Level: Commercial Area 1 54 sf 2 1215 sf 3 117 sf Total. 1,386 sf 9-194 Sewer Capacity Memorandum 215 RIVERSIDE AVENUE NewportBeach, CA June 5, 2019 Sewer Generation Calculations (City of Los Angeles Sewer Factors) Since the City of Newport Beach does not have sewer generation factors for retail, commercial, or office uses (only residential), City of Los Angeles Sewer Factors were used. The calculations are based on the building square footage, along with a peaking factor. The following are the sewer calculations for both existing and proposed conditions: Existing Condition o First Floor Restaurant; 107 seats x 30 gpd = 3,210 gpd o Second Floor Office; 2,830 square feet x 120/1000 gpd = 340 gpd o Third Floor Office; 2,316 square feet x 120/1000 gpd = 278 gpd Total Average Daily Flow = (3,210+340+278) = 3,828 gpd Peak Flow (peaking factor = 2.5): 9,570 gpd (0.0148 cfs) Proposed Condition (commercial/retail): (50 gpd/1000 sf) x 2,772 square feet 0 139 gpd o Peak Flow (peaking factor = 2.5): 348 gpd (0.0006 cfs) A copy of the City of Los Angeles Sewerage Generation Factor Table is included as Attachment 2. Sewer Flow -Depth Calculations The flow -depth calculations of the peak flow were prepared using FlowMaster computer program. The flow -depth calculations shows an existing and proposed percent -full of 11 .2% and 2.5%, respectively. The calculations demonstrate that the proposed development will not adversely impact the existing sewer system, since the percent -full of the sewer system does not exceed 50% -full. In addition, the proposed sewer loading will be less than the existing condition loading. The calculations are included on the following pages. 3 9-195 Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA June S, 2019 Worksheet for Circular Pipe - Existing Development Project Description Friction Method Mannino Formula Salve For Normal Depth Input Data Roughness Coefficient 0.013 Channel Slope 0.01000 ftift Diameter 6 in Discharge 0.0148 fills Results Normal Depth 0.06 1t Flow Area 0.01 it, Wetted Perimeter 0.34 1 Hydraulic Radius 0.04 it Top Width 0.32 ft Critical Depth 0.06 ft Percent Full 11.2 Critical Slope 0.00814 ftif, Velocity 123 ft/s Velocity Head 0.02 ft Specific [nefoy 0.06 it Froude Number 1.11 Maximum Discharge 0.60 fills Discharge Full 056 fP/s Slope Full 0.00001 ih Flow Type SuperCnlical 4 9-196 Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA June 5, 2019 Worksheet for Circular Pipe - Proposed Development Project Description Friction Method Manning Formula Dobie For Plormal Depth Input Data Roughness CoeRlcient D.D13 ChannHSlope 0.011)DO Wit Diameter o in Discharge D.DOD6 ft'fs Results PdormalDepth D.D1 it Flo'viArea 0.00 tF Netted Perimeter D.16 ft HydraulicPadius O.D1 it TopL^ldlh 0.16 it Critical Depth D. 011 ft Percent Full 2.5 Critical Slope D.D1264 Wit Velocity 0.47 Ills Velocity Head O.OD ft Sp eci fi c Enercry D.02 ft Froudc Number 0.91 Maximum Discharoe 0.60 ft'±s DischaraeFull 0.56 fYrs Slope Fuji 0.GDODD Pat" FlowType SuGCritical J 9-197 Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA June 5, 2019 Conclusion The calculations presented in this memorandum show that the proposed 215 Riverside Avenue project will not adversely impact the existing sewer system. The proposed condition sewer loading will be less than that of the existing condition for the project site. In addition, the depths in the existing sewer lateral of 1 1.2% -full (existing condition) or 2.5% - full (proposed) do not exceed the City of Newport Beach design criteria of 50% -full. Attachments: 1. Pages 249 & 281 from CC Appeal of PC Approval for Nesai Restaurant 2. GIS Sewer Atlas 3. City of Los Angeles Sewerage Generation Factor Table 4. Preliminary Utility Plan z ATTACHMENT 1 Pages from CC Appeal of PC Approval of Use Permit for Nesai Restaurant Sewer Capacity Memo — 215 Riverside Avenue Newport Beach, CA 9-199 0'-d NSD -bYd `Li'O8O3Cs >'L!'O5 O9O'B ld V6OSO'B ?Viol Lamssltc mm-Loimocrumuu 0 15i1ONOO SW:I Y3NV OKMM attw J NV1d39S , a u3d3umos®rp-wxrwvl-heuvlo xsw-b+dwrva:.+t Al `\ LgR13bVnQSL&Vs '.BMOo!3bvmlol L7lV / W li '.i++. aw191 1O1a1F119• a. m p m AVR%3 O msto flm D 1- ` tet. t cl ;5 lotOlaxnraO.dtsud _ ] 1orlurlvvONumx3 1 . aboom ot ` OLOMWsKSNyId lOfOnOrynd ONII.SO4 T— aNunvmassa 1 ii e :iv el a•rnl•o w.. O.IDMYHONDSd3 i•' Yls • •In.. suns MDIf 7O 0 ONU-11. i, a.DI0oi143JD VVA 9-200 NEW ADA AE5jR4)O4jr Main Dining eAR NS - T- L L eA. k 91-4 sq ft C, 39 seats Z LL WING ME f&EW COULILWAL SIMS A WN RATIO OOOFIS Main Patio T602sTqft L seats 7 D0104 MIMIC 01AA WMCG1321TV, EMIM-WRE Al ORNEWAY IUTC>.EIJ LQM,4 rNEW CREA5F RAP SELUN E3 LiJSMe TRASH PIEW hl*.Cfi[?4 ACLI}, MAT MA1hREA HLW FJ704LII AWC;5 COCW, Ulu FRIr-L cfn , t I L-- 1 1 CL-(-,L-I! I 1Chef's Dinini,--,- 0[1 269 sq ftGa.6 seats Chef's Patio 388 sq ft 11 W A b L 22 seats z "TiM FV*:E/-.AL i Y '/ • Tom` Md-TWCTION ATrXIT PATH PR_ ATL_ 67 OF TRMEL 07/1-3/2012 Community Development Department - Planning Division 3.9 9-201 ATTACHMENT 2 GIS Sewer Atlas Sewer Capacity Memo - 275 Riverside Avenue Newport Beach, CA 9-202 1"MIIDO$_012 MIDOS 007 202' B"VCP CND MM\ 008 MHD05 rVF/ 250 CUFF UR -29p 135 019 f 9rti.. FC MHD05-006' CMB a MHD05 019 Oy0 CLIFF DRIVE COMMUNITY CENTER \;.rs, 61HD05 009' Cliff Drive Park '°i ab,/ u \\• n, j MHD05.020 A MFD05 N 5T P ^ AVOHi ?7 IA 05. r 9 LID07 002 rlf '• T /004 5 m a A1F®06 00A LHD06_°01 A u•nuu 05 144 f79'g`.OIP CNg.. -. MHDO6_007 U.J, 6,iP He 22S• . 130 LFD07Wt `Ifr6 MHDOD oD7 23' •.., –B MHD05 007 ,...... , !.. / m iMFID05 002 / 7 T rm / a z gas 3z921 1 218 f/ n Mt/D05001 h 176 e J MIDD0001 / 1\ ' \: ry09 v Ac LID05%011 JJB • hpB` VCp h0 1 2) - HAIIK VL CC 66806 >Jj. O / y^ Cryo !•.. h0 Q 2pT /, 2 a IJS.O OCsO 70...0/ ti ? h0 \: '•.• O / MH490 tAHB06.. AO%'~ Opo ry -ape A. 1HD05'001 ' h 4 / / ASO dp CO 0CSO CCsp//Jl lj ! 4M... 03 002 M Job, 0C`r0 r'L G°4.. 0 / LFD07 007 /1"^ pO HDO3 004 S..y PO / ... .OSa J CPC, 9 CSO / ) ohn C ... Wayne MHA89 2` fO 2 ry aa 4`• 2q/7. J MHD07 005... Dso10 m r ^ ns 0 100 200 Every easortabl effort tie t made to assure the accuracy f % A. I -ded 11--. The Gty Of NowP«I Bach and ns employ s and a6cnts alsc4 rt , any and a0 resf—s b rry from MkDos_o°fFeet r0lalinD to any n:sulls tibia nOtl m ils use }i lrb, 9-203 ATTACHMENT 3 City of Los Angeles Sewerage Generation Factors Sewer Capacity Memo - 215 Riverside Avenue Newport Beach, CA 9-204 SEWARAGE FACILITIES CHARGE SEWAGE GENERATION FACTOR FOR RESIDENTIAL AND COMMERCIAL CATEGORIES EFFECTIVE DATE: April 6, 2012 Grne No. FACILITY DESCRIPTION PROPOSED SCF IN GPD BOD SS 1 Acupuncture Office/Clinic 120/1,000 Gr SF 265 275 2 Arcade - Video Games 50/1,000 Gr SF 265 275 3 Auditorium a /Seat 265 275 4 Auto Parkin a 20/1,000 Gr SF 265 275 5 Auto Mfg., Service Maintenance b Actual 1,260 1,165 6 Bakery 280/1,000 Gr SF 3,020 2,540 7Bank: Headquarters 120/1,000 Gr SF 265 275 8Bank: Branch 50/1,000 Gr SF 265 275 9 Ballroom 350/1,000 Gr SF 265 275 10 Banquet Room 350/1,000 Gr SF 265 275 11Bar: Cocktail, Fixed Seta c 15/Seat 265 275 12Bar: Juice, No Baking Facilities d 720/1,000 Gr SF 265 275 13Bar: Juice, with Baking Facilities d 720/1,000 Gr SF 265 275 14 Bar: Cocktail, Public Table Area c 720/1,000 Gr SF 265 275 15 Barber Shop 120/1,000 Gr SF 265 275 16 Barber Shop s 15/Stall 265 275 17 Beauty Parlor 25/1,000 Gr SF 265 275 18 Beauty Parlors 50/Stall 265 275- 19 Bldg. Const/Field Office a 120/Office 265 275 20 Bowling Alley: Alley, Lanes & Lobby Area 5-0/10-0- - Gr SF 265 275 21 Bowling Facility: Arcade/Bar/Restaurant/Dancing Total Average Average 22 Cafeteria: Fixed Seat 30/Seat 1,000 600 23 Car Wash: Automatic b Actual 1 2651 285 24 Car Wash: Coin Operated Bays bActual 265 1 285 25 Car Wash: Hand Wash b Actual 265 285 26 Car Wash: Counter & Sales Area 50/1,000 Gr SF 265 275 27 Chapel: Fixed Seat 3/Seat 265 275 28 Chiropractic Office 120/1,000 Gr SF 265 275 29 Church: Fixed Seat /Seat 265 j 275 30 Church School: Day Care/Elem 9/Occupant 265 275 31 Church School: One Day Uses 9/Occupant 265 275 32 Cocktail Lounge: Fixed Seat 15/Seat 265 275 33 Coffee House: No Food Preparation d 720/1,000 Gr SF 265 275 34 Coffee House: Pastry Baking Only d 720/1,000 Gr SF 265 275 35 Coffee House: Serves Prepared Food d 25/Seat 1,000 600 36 Cold Storage: No Sales 30/1,000 Gr SF 265 275 37 Cold Storage; Retail Sales 50/1,000 Gr SF 265 275 38 Comfort Station: Public 80/Fixture 265 275 39 Commercial Use a 50/1,000 Gr SF 265 275 40 Community Center 3/Occupant 265 275 41 Conference Room of Office Bldg. 120/1,000 Gr SF 265 275 42 Counseling Center h 120/1,000 Gr SF 265 275 43 Credit Union 120/1,000 Gr SF 265 275 44 Dairy Average Flow 1,510 325 45 Dairy: Barn Average Flow 1,510 325 46 Dairy: Retail Area 50/1,000 Gr SF 265 275 47 Dancing Area of Bars or Nightclub) c) 350/1,000 Gr SF 265 275 48 Dance Studio i 50/1,000 Gr SF 265275 49 Dental Office/Clinic 250/1,000 Gr SF 265 275 Page 1 9-205 SEWARAGE FACILITIES CHARGE SEWAGE GENERATION FACTOR FOR RESIDENTIAL AND COMMERCIAL CATEGORIES EFFECTIVE DATE: April 6, 2012 line No. FACILITY DESCRIPTION PROPOSED S(;F IN GPD BOD m I SS m 50 Doughnut Shop 280/1,000 Gr SF 1,000 600 51 Drug Rehabilitation Center h 120/1,000 Gr SF 265 275 52 Equipment Booth 30/1,000 Gr SF 265 275 53 Film Processing Retail 50/1,000 Gr SF 265 275 54 Film Processing Industrial Actual 265 275 55 Food Processing Plant b Actual 2,210 1,450 56 Gas Station: Self Service 100/W.C. 2651 275 57 Gas Station: Four Bas Max 430/Station 1,95() 1,175 58 Golf Course Facility: Lobby/Office/Restaurant/Bar Total 700 450 59 Gymnasium: Basketball, Volleyball k 200/1,000 Gr SF 265 275 60 Hanger Aircraft 50/1,000 Gr SF 265 275 61 Health Club/Spa k 650/1,000 Gr SF 265 275 62 Homeless Shelter 70/Bed 265 275 63 Hospital 70/Bed 820 1,230 64 Hospital: Convalescent a 70/Bcd 265 275 65 Hospital: Animal 300/1,000 Gr SF 820 1,230 66 Hospital: Psychiatric 70/Bed 265 275 67 Hospital: Sur ical a 360/Bed 265 275 68 Hotel: Use Guest Rooms Only a) 120/Room 265 275 69 Jail 85/11nmate 265 275 70 Kennel: Dog Kennel/Open 100/1,000 Gr SF 265 275 71 Laboratory: Commercial 250/1,000 Gr SF 265 275 72 Laboratory: Industrial Actual 265 275 73 Laundromat 185/Machine 550 370 74 Library: Public Area 50/1,000 Gr SF 265 275 75 Library: Stacks, Storage 30/1,000 Gr SF 265 275 76 Lobbv of Retail Area f 50/1,000 Gr SF 265 275 77 Lode I lall 3/Scat 265 275 78 Lounge 1 50/1,000 Gr SF 265 275 79 IMachine Shop (No Industrial Waste Permit Required) (b) 50/1,000 Gr SF 265 275 80 Machine Shop IndustrialActual 265 275 81 Mfg or Industrial Facility No IW Permit Required) b) 50/1,000 Gr SF 265 275 82 Mfg or Industrial Facility IndustrialActual 265 275 83 Massae Parlor 250/1,000 Gr SF 265 275 84 Medical Building a 225/1,000 Gr SF 265 275 85 Medical: Lab in Hospital 250/1,000 Gr SF 340 275 86 Medical Office/Clinic 250/1,000 Gr SF 265 275 87 Mini -Mall No Food 5011,000 Gr SF 265 275 88 Mortuary: Chapel 3/Seat 265 275 89 Mortuary: limbalmin 300/1,000 Gr SF 800 800 90 Mortuary: Living Area 50/1,000 Gr SF 265 275 91 Motel: Use Guest Room Only (a) 120/Room 265 275 92 Museum: All Area 30/1,000 Gr SF 265 275 93 Museum: Office Over 15% 120/1,000 Gr SI' 265 275 94 Museum: Sales Area 50/1,000 Gr SF 265 275 95 Office Building (a) 120/1,000 Gr SF 265 275 Office Bldg w/Coolin Towor 170/1.000 Gr SF 265 275198PlatinPlant (No IW Permit Rc uired) (b) 50/1.000 Gr SF 265 275 Plating Plant (Industrial) (b) jActual 265 275 Page 2 9-206 SEWARAGE FACILITIES CHARGE SEWAGE GENERATION FACTOR FOR RESIDENTIAL AND COMMERCIAL CATEGORIES EFFECTIVE DATE: April 6, 2012 Line No. FACILITY DESCRIPTION PROPOSED SGF IN CPD BOD fmp-/[) SS m 99 1 Pool Hall o Alcohol 5011 000 Gr SF 265 275 100 Post Office: Full Service m 120/1,000 Gr SF 265 275 101 Post Office: Private Mail Box Rental 50/1,000 Gr SF 265 275 102 Prisons 175/Inmate 265 275 103 Residential Dorm: College or Residential n 70/Student 265 275 104Residential: Boarding House 70Bed 265 275 105Residential: Apt - Bachelor a 75/DU 265 275 106Residential: Apt - I BDR a o 110/DU 265 275 107 Residential: Apt - 2 BDR a o 150/DU 265 275 108 Residential: Apt - 3 BDR a o 190/DU 265 275 109Residential: Apt - >3 BDR o 40/BDR 265 275 110Residential: Condo - I BDR o 110/DU 265 275 1 I 1Residential: Condo - 2 BDR o 150/DU 2651 275 112Residential: Condo - 3 BDR o 190/DU 265 275 113Residential: Condo - >3 BDR o 40/BDR 265 275 I l4Residential: Du lex/Towhhouse - I BR o I I0/DU 265 275 115Residential: Du lex/Towhhouse - 2 BR o 150/DU 265 275 116Residential: Du lex/Towhhouse - 3 BR o 190/DU 265 275 117 Residential: Du lex/Towhhouse - >3 BR o 0/13DR 265 275 118 Residential: SFD - I BR o 140/DU 265 275 119Residential: SFD - 2 BR o 185/DU 265 275 120 1 Residential: SFD - 3 BR o 30/DU 265 275 121Residential: SFD ->3 BR o45/BDR 265 275 122 Residential Room Addition: Bedroom o 5/13DR 265 275 123 Residential Room Conversion: Into a Bedroom o 45/BDR 265 275 124Residential: Mobile Home Same as Apt 2651 275 125Residential: Artist 2/3 Area 75/DU 265 275 126 Residential: Artist Residence 75/DU 265 275 127Residential: Guest Home w/ Kitchen Same as Apt 265 275 128Residential: Guest Home w/o Kitchen 451BDR 265 275 129 Rest Home 70/Bed 555 490 130 Restaurant: Drive -In 50/Stall 1000 60 131Restaurant: Drive -In Seating Area 25/Seat 10001 600 132 Restaurant: Fast Food Indoor Seat 25/Seat 1000 600 133 Restaurant: Fast Food Outdoor Seat 25/Seat 1000 600 134 Restaurant: Full Service Indoor Seat a 30/Seat 1000 600 135 Restaurant: Full Service Outdoor Seat 30/Seat 1000 600 136 Restaurant: Take Out 300/1,000 Gr SF 1000 600 137 Retail Area(greater than 100,000 SF 50/1,000 Gr SF 265 275 138 Retail Area less than 100,000 SF 25/1,000 Gr SF 265 275 139 Rifle Range: Shooting Stalls/Lanes, Lobby 50/1,000 Gr SF 265 275 140 iRifle Range Facility: Bar/Restaurant Total Average Average 141 School: Arts/Dancing/Music i H/Student 265 275 142 School: Elementary/Jr. High a) ) 9/Student 265 275 143 School: High School a ) 11/Student 265 275 144 School: Kindergarten s) 9/Student 265 275 145 School: Martial Arts i 9/Student 265 275 146 School: Nursery -Day Care ) 9/Child 265 275 147 School: Special Class ) 9/Student 265 275 Page 3 9-207 SEWARAGE FACILITIES CHARGE SEWAGE GENERATION FACTOR FOR RESIDENTIAL AND COMMERCIAL CATEGORIES EFFECTIVE DATE: April 6, 2012 ffFACILITY DESCRIPTION PROPOSED SGF IN GPD BOD rSS 148 School: "trade or Vocational I I/Student 265 275 149 School: Training 11/Student 265 275 150 School: University/College a 16/Student 265 275 151 School: Dormitory a n 70/Student 265 275 152 School: Stadium, Pavilion 3/Seat 265 275 153 Spa/Jacuzzi Commercial with backwash filters Total 265 275 154 Storage: Building/Warehouse 30/1,000 Gr SF 265 275 155 Storage: Self -Storage Bldg 30/1,000 Gr SF 265 275 156 Store: Ice Cream/Yogurt 25/1,000 Gr SF 1000 600 157 Store: Retail I 50/1,000 Gr SF 265 275 158 Studio: Film/TV - Audience Viewing Room 3/Seat 265 275 159 Studio: Film/TV - Regular Use Indoor Filming Area 50/1,000 Gr SF 265 275 160 Studio: FiInv TV - Ind. Use Film Process/Machine Shop ( 50/1,000 Gr SF 265 275 161 Studio: Film/TV - Ind. Use Film Process/Machine Shop Total 265 275 162 Studio: Recording 50/1,000 Gr SF 265 275 163 Swimming Pool Commercial with backwash filters Total 265 275 164 Tanning Salon: Independent,No Shower r 50/1,000 Gr SF 265 275 165 Tanning Salon: Within a Health Spa/Club 640/1,000 Gr SF 265 275 166 Theater: Drive -In 6/Vehicle 265 275 167 Theater: l,ive/Music/O ra 3/Seat 265 275 168 eater: Cinema 3/Scat 265 275 169 Tract: Commercial/Residential 1/Acre 265 275 170 Trailer: Const/Field Office c) 120/Office 265 275 171 Veterinary Clinic/Office 250/1,000 Gr SF 265 275 172 Warehouse 30/1,000 Gr SF 265 275 173 Warehouse w/ Office Total 265 275 174Waste Dump: Recreational 00/Station 2650 2750 Rg We Tastin Room: Kitchen 200/1,000 Gr SF 265 275 Wine TastingRoom: All Area 50/1,000 Gr SF 265 275 Page 4 I: FOOTNOTES TO SGFs TABLE a) SFC rates for these facilities have historically been published in SFC ordinances. b) Bureau of Sanitation will determine the flow based on the information given by applicants for facilities with industrial discharge. The flow will be redetermined by Sanitation inspectors annually based on water bills. If the actual flow exceeds the previous year's determined flow, the applicants will be charged for the difference. If this type of facility is exempt from an industrial discharge permit, only the domestic SFC will be assessed. c) The SFC for a bar shall be the sum of SFC's for all areas based on the SGF for each area ex. fixed seat area, public table area, dancing area). d) The determination of SGF for juice bars and coffee houses previously depended on the extent of the actual food preparation in house, not by the types of food provided. Food is assumed to be prepared offsite and as such, the three prior subcategories have been consolidated. 1) SGF for no pastry baking and no food preparation is 720 gpd/I000 gr.sq.ft. 2) SGF for pastry baking only and no food preparation is 720 gpd/1000 gr.sq.ft. 3) SGF for complete food preparation is 25 gpd/seat, the same as a fast food restaurant. Juice bars and coffee houses do not serve any alcoholic drinks. e) Building construction includes trailers, field offices, etc. f) Cocktail lounge usually does not serve prepared food. g) Cold storage facilities are categorized as follow: 1) No Sales - the cold storage facility is used only for temporary storage, no selling is involved. For example, cold storage facilities at the harbor temporarily store seafood until it is distributed. 2) Cold storage w/ retail sales - the primary function of this facility is to support the wholesale/retail operation of a store, such as supermarket freezers, refrigerators, etc. h) Counseling centers include marriage counseling centers. alcohol/drug rehabilitation dependency centers, nutrition centers, diet centers, etc. 9-209 i) Part-time basis schools or dance studios should be charged as retail area - 50 gpd /1000 gr.sq.ft. Full-time basis schools should be charged by the number of students. 0) Domestic waste is estimated at 50 gpd/1,000 square feet in addition to total process flow. k) Bureau of Sanitation will determine if an industrial permit is needed for health spas. The first year flow is based on 650 gpd/1000 gr.sq.ft., and the Sanitation inspectors will redetermine the flow annually based on water bill from the previous year. The applicants are responsible for paying the difference of SFC. Health club/spa includes lobby area, workout floors, aerobic rooms, swimming pools, Jacuzzi, sauna, locker rooms, showers, and restrooms. if a health club/spa has a gymnasium type of facility, this portion should be charged separately at the gymnasium SFC rate. Gymnasiums include basketball court, volleyball court, and any other large open space with low occupancy density. 1) Lobby of retail includes lounges, holding rooms, or waiting area, etc. m) Full service post offices include U.S. Postal Service, UPS, Federal Express, DHL, and etc. n) The SGF for a college dormitory based on student capacity also includes the SGF for the dormitory cafeterias. o) A bedroom is defined as an enclosed subdivision with 50 sq.ft. or more floor area in a residential building commonly used for sleeping purpose, and is partitioned off to form a habitable room. p) The SGF for schools based on the student capacity, covers the following facilities: 1) classrooms and lecture halls 2) professors' offices 3) administration offices 4) laboratories for classes or research 5) libraries 6) bookstores 7) student/professor lounges 8) school cafeterias 9) warehouses and storage areas 10) auditoriums 11) gymnasiums 12) restrooms 9-210 It does not include water used by schools for swimming pools. When a school files an application for addition of any of the foregoing facilities, the student population will be reassessed and the total gpd for the new facility will be based on the number of students increased since the last SFC was paid or when the City implemented the SFC for the first time. The SFC for any school facility (ex. stadium, dormitory, etc.) not listed above, will be based on the designated SGF for that category. q) The SFC for a TV or motion picture studio shall be the sum of SFC's for different facilities in the studio. based on the SGF for each facility. A studio may include one or more of the following facilities: audience viewing room, filming room, film processing, storage area, etc. r) No independent tanning salons with shower were encountered during 1996 survey. s) Alternative basis of charge for City's consideration. The prior square footage basis is also presented should the City decide to continue charging on that basis. 3 9-211 ATTACHMENT 4 Preliminary Utility Plan Sewer Capacity Memo - 215 Riverside Avenue Newport Beach, CA 9-212 CITY OF NEWPORT EEACH NOTES EASEMENT NOTES SCOPE OR WORK ELOPMUEV g e . NOTE TO LUNTRA LT UR O©0. u :off a u ..: >' w t T P 1 Pw. ar c •. r .III MV 1W uwy aK I= a wIo i i AVON STREET DETAIL J Uil]I:L IC':,.t:'ll'IN1 rEti Uli% 9-213 Exhibit 5 Biological Resources Memorandum 9-214 TECHNICAL MEMORANDUM GLENN LUKOS ASSOCIATES Regulatory Services PROJECTNUMBER: 05600002RIVE TO: Greg Ramirez, Principal Planner, City of Newport Beach Makana Nova; Associate Planner. City of Newport Beach FROM: Tony Bomkamp DATE: September 23, 2019 SUBJECT: 215 Riverside Avenue, Newport Beach: Delineation and Evaluation of Wetland within Avon Street Right -of -Way West of Subject Property On September 3, 2019, I conducted a site visit to examine a potential wetland in the Avon Street right-of-way, west of the 215 Riverside Avenue project site (Exhibits 1 — Vicinity Map). During the site visit, I conducted a delineation of wetlands as defined in the City of Newport Beach Local Coastal Program (LCP) as well as in the California Coastal Act. I also evaluated the area to determine whether the area that is vegetated with predominately southern cattail (Tvpha donningensis) meets the definition of a stream pursuant to Section 1602 of the Fish and Game Code. Finally, I evaluated the functions of the potential wetland area to determine the need for set backs or buffers in accordance with Section 21.30B.040.0 of the City's Local Coastal Program regarding Wetlands, Deepwater Areas, and Other Water Areas. Based on the presence of a predominance of wetland indicator plant species and wetland hydrology indicated by the presence of surface water I determined that a wetland is present along Avon Street. Wetland data sheets are provided as Appendix A. It is also important to note that during review of the City's files, additional information was found that documents the presence of wetlands at this location. Specifically, a letter trom Dr. Jan Vandersloot dated April 19, 1989 detailing the results of a hydrological studv of the area which indicates that the wetland is supported by a "spring" which drains toward the west, discharging to a culvert near the western terminus of the wetland, consistent with my observations. Dr. Vandersloot's letter is attached as Exhibit 5. A hand -drawing of the wetland area is also included as Exhibit 6. WETLANDS The right-of-way for Avon Street supports a narrow strip of wetland dominated by southern cattail Typha domin yensis, OBL) with a few scattered arroyo willows (Salix lusiolepi.s. FACW) in the canopy laver with an understory of saltgrass (Dislichlis spicala, FAC). that is intertwined with the southern cattail. The extent of wetland area in the Avon Street right-of-way is depicted on Exhibit 29 Orchard ff Lake Forest California 92630-8300 Telephone: (949) 837-0404 Facsimile: (949) 837-5834 9-215 MEMORANDUM September 23, 2019 Page 2 2. The narrow strip of wetland area is bisected by two pedestrian bridges connected to sidewalks north of Avon Street. During the September 3, 2019 site visit, water from the wetland was detected discharging to a pipe at the west end of the wetland area beneath a dense thicket of giant reed Arundo donax, FAC W), which appears to allow excess water in the wetland to drain. The wetland area is restricted on the south by the Avon Street curb and on the north by a steep slope, such that wetland area typically ranges from two to six feet in width. In order to evaluate the need for buffers, measurements were taken beginning approximately 100 feet from the 215 Riverside Avenue property. For the entire 100 -foot wetland segment nearest the 215 Riverside Avenue Property, the wetland is dominated by southern cattail with saltgrass understory and there are no arroyo willows within 100 feet of the 215 Riverside Avenue property. At the eastern pedestrian bridge, as depicted on Exhibit 3, the wetland vegetation transitions from mostly southern cattail to alkali bulrush (Schoenoplectus marilimus, OBL), which is the dominant wetland plant east of the pedestrian bridge. The area immediately east of the bridge exhibited surface water of one to two inches in depth, with surface water no longer present toward the eastern extent of the alkali bulrush. As depicted on Exhibit 3, the wetland ends abruptly where the vegetation changes to a monoculture of alkali heliotrope (Heliotropium currasavicum, FACU) Exhibit 4, Photographs 1). The area dominated by alkali heliotrope, immediately east of the wetland was evaluated for hydric soils and subsurface water. Neither were detected confirming that the extent of alkali bulrush is the limit of the wetland on the east. SECTION 1602 NOTIFCIATION REQUIREMENTS In an email to the City dated August 23, 2019, Mr. Charles Klobe made the following assertion: On another note the adjacent riparian areas and stream of water are absolutely jurisdictional and the development of this site should be required to file a formal notification with the California Department of Fish and Wildlife to ensure that CDFW also concurs that there are no impacts from the proposed development. The site does not drain into this area however it is directly adjacent to the development and the CDFWS could at minimum require specific on-site protection to protect their stream. in my professional opinion, I do not believe that the wetland within the Avon Street right-of-way meeting the California Fish and Game Code for a "Stream"; rather, the feature is best characterized as a "Slope wetland''. Nevertheless, this is a moot point because, as discussed below, the wetland area is 29 feet from the closest area of impact and thus, there would be no Notification Requirements under Section 1602 as there is no potential alteration of a streambed or lake. 9-216 MEMORANDUM September 23, 2019 Page 3 WETLAND BUFFERS As noted. during the September 3, 2019 site visit, 1 evaluated the functions of the potential wetland area to determine the need for setbacks or buffers in accordance with Section 21.30B.040.0 of the Local Coastal Program, which states C. Wetland Buffers. A protective open space buffer shall be required to horizontally separate wetlands fi-orn development areas. Wetland buffers shall be of a sufficient size to ensure the biological integrity and preservation of the tivetland. Wetlands shall have a mininnun buffer width of'one hundred (100) -feet wherever possible. 1. Exception: Smaller ivetlancl bakers may be allotived only where it can be demonstrated that: a. A one hundred (100) foot is-ide buffer is not possible dare to site- specific constraints: and b. The proposed nar•rotiver• buffer vi)ould be amply protective of the biological integrity of'1he tivetland given the site-specific characteristics of the resource and of the type and intensity of disturbance. Existing Condition As described above, the wetland consists of a narrow strip (typically three- to six -foot -wide) immediately adjacent to the concrete curb along Avon Street. such that along the entire length of wetland, Avon Street is located approximately one to two feet from the wetland edge (see Exhibit 4, Photographs 2). The northern slope vegetated with mostly non-native species including overhanging Brazilian pepper trees (Schinus terebinthifoliars), an invasive species.' giant reed, also an invasive species'- and non-native ornamentals such as plumbago (Plumbago ccrpensis) and blue gum eucalyptus (Eucalyptus globulus), which line the majority of the slope. As depicted on Exhibit 3, the 215 Riverside Avenue site currently contains a vacant building with associated asphalt parking area. Immediately west of the parking area is a concrete wall that was constructed in a manner that encroaches on to City property and will be removed as a component of the project. As depicted on Exhibit 3, the existing retaining wall is located approximately 29 feet from the eastern -most extent of the wetland, which is approximately 39 feet west of the property line and the limit of development upon completion of the project. 9-217 MEMORANDUM September 23, 2019 Page 4 Purposes for Wetland Buffers Wetland buffers are often necessary to protect or ensure the integrity/functions of wetlands with high resource value. Wetland functions typically are separated into three areas for purpose of evaluating functions and associated impacts: Hydrologic, Biogeochemical (Water Quality), and Biological. Wetland buffers often are necessary to protect one or more of these functions from degradation. The purpose of this analysis is to evaluate the potential effects of the proposed project at 215 Riverside Avenue. Hyd rological/Hyd rology As noted above, the source of water detected in the wetland is from groundwater that ultimately drains to the western -most end of the wetland, discharging to a culvert approximately 430 feet from the eastern end of the wetland. Thus, the proposed project would have no potential to affect the hydrology of the wetland area, which is totally dependent on a groundwater source unconnected to the proposed project. Wetlands also provide certain functions such as surface water storage, groundwater discharge and support of aquatic plants and animals. The proposed project exhibits no potential for changing the ability of the narrow wetland area to store limited amounts of surface water or groundwater originating from the adjacent slope that discharges to the wetland area. The project would also have no effect on the hydrology such that changes to wetland species would be caused by the project. Other potential biological impacts are discussed below. Biogeochemical/Water Quality Buffers often protect wetlands from degradation of biogeochemical functions such as sediment inputs, discharge of pollutants originating from landscaped areas, discharge of pollutants as street runoff, or pollutants from other sources. Any potential impacts to water quality during construction would be fully addressed through project BMPs such as silt fence, straw wattle, and other necessary protections deten-nined in coordination with the City. In the post -project condition, the proposed project would have no potential to impact water quality. Biologica[/Habitat Functions As noted above, the cattail -dominated wetland is immediately adjacent to Avon Street, typically within a few feet of the street for its entire length as can be seen on Exhibit 4, Photographs 1 and 2. Thus, based on the existing conditions, as summarized above, the wetland exhibits very limited functions for wildlife, given the immediate surroundings, larger urban environment, very high edge to habitat area" ratio, and the general low -value of cattails as habitat for special -status plants and animals. This is also the case for the area dominated by alkali bulrush east of the eastern 9-218 MEMORANDUM September 23, 2019 Page 5 pedestrian bridge, which has a much lower stature than the cattails (three feet for the bulrush and over ten feet for the cattails). Given the low -habitat value associated with the narrow strip of cattail and alkali bulrush, the proposed project at 215 Riverside Avenue would have no potential for indirect impacts on biological resources (as noted above, temporary grading would be approximately 29 feet from the eastern edge of the wetland) and in the final project, any potential development would be 39 feet from the wetland which is identical to the existing condition. Thus, in the final project configuration, there would be no development within 39 feet of the wetland, identical to the current conditions. The 39 -foot set back in the final configuration would provide more than adequate protection of the wetland, given that it is of low value and within one or two feet from Avon Street for the entire length. CONCLUSIONS The Avon Street Wetland is a slope wetland or groundwater fed wetland that has been documented at this location since at least 1989. The proposed development at 215 Riverside Avenue would have no potential to affect the wetland directly through dredging, filling, or other alteration. The proposed development would not affect the functions of the wetland which is located as close as two feet from Avon Street along its entire length, limiting the wetland functions. The proposed development has no potential to affect the wetland hydrology, which consists of discharging groundwater. The proposed project also exhibits no potential to affect biogeochemical (water quality) functions and would not affect potential habitat functions. Thus, the proposed development has not potential to adversely affect the Avon Street Wetland. 9-219 D Qw OL 0 9 C G) Z D O co Own 0 m C) D cwa CD I N OOO 0 0C) 215 RIVERSIDE AVENUE GLENN LUKOS ASSOCIATES 77,cinity Map Exhibit 1 Ll 9-220 e.. ! .. •, . .. ALF... __-_.A i L , ') si 4 4.1 1 aqo q;. . S; : ' • ". \ ` CJS / t t J . Ff r r, ^ i b .. .. 5,, s. W. V I`.;` _ r J \\., ;/ \'' izi •?/ f•. r i 215 RIVERSIDE AVENUE Go.u._ 't' .J t, r" y ,, / •, Welland Map c , w 0 /i Ja tgWell . Y; aSfhigh r • 5 • • V Wetland4 2 215' a p y A injii V 1 T t mak' s h`P F 215 RIVERSIDE AVENUE Welland Map V bing r • • AN D. VANDEHSLUU I, M.L 3 r { Pr,3•. u DIP OUA TE A AanTCArJ nOAnO O'' Dt 11MA TOIOG Y 2 Sc i $': IL bAj y Q F -4(b) 8101 NEWMAN, SUITE C 2221 16th Street jHUNTINGTONBEACH,CA92647 Newport Beach, CA 92663414)8480770 LI), April 19, 1989<'" Mayor Don Strauss, and Newport Beach City. Council Members P; City of Newport Beach ecj 3300 Newport Blvd, i f..:+ erV Dir. Newport Beach CA 92663 pct R Dir. ct° n i tanning Dir. Re: Avon Street Creek Frri;ce Chief Diram Dear Mayor Strauss, and City Council Members, Wien s I wish to thank the City of Newport Beach for abandoning` the proposed parking lot along Avon Street, which would have destroyed the wetland along the street known as Avon Street Creek. However, there now appears to be another threat to this wetland which deserves your attention. Orange County Vector Control, apparently concerned about mosquitoes, has recently been asking the Public Works Department to clear out the vegetation in the wetland. It appears that there is presently not enough water in certain areas of the creek to support the mosquito fish which eat the mosquito larvae. In the past, the City has routinely removed vegetation in the creek with a backhoe, indiscriminately removing all. vegetation every year or so. Before authorizing this drastic step, however, I would like to request that the City hold off on the backhoe until our citizen's group, the Friends of Avon Street Creek, can meet and devise a plan to present to the City to protect and enhance the wetland vegetation, while restoring the water needed for the mosquito fish. The problem is basically twofold. One is that vegetation has grown to the point of crowding out the water, and needs to be thinned out. The other problem is that the recently completed storm drain under Avon Street is diverting ground water which normally would surface in the creek alongside the road, providing the water sourceforthecreek. This diversion of water, approximately 22 gallons a minute of crystal clear fresh water, can be measured at the main rear entrance of the Newport Imports dealership at the manhole there. The water from the artesian springs uncovered by the construction of the storm drain is now largely being lost into the storm drain pipes, due to the leaky nature of the storm drains. The result is that before the storm drain construction, water flowed in the creek at the second set of stairs going up the west side of Cliff Drive Park at between 2 and 5 gallons a minute as measured by my geology consultants. After the storm drain, the soil is merelydampatthispoint, although thecmek flows at its normal rate of about 3 gallons a minute at the western terminus of the creek. Because of these changes, we would like to be given the opportunitytoanalyzealternativesdesignedtorestorewatertothecreek. These alternatives range from elevating the drain pipes at the west end of 9-224 JAN U. VANuth0LUU 6, IVI.1 IDIP(OMAiE AMERICAN BOARD OF DERMATOLOGY 8101 NEWMAN, SUITE C Mayor Strauss HUNTINGTON BEACH, CA 92647 April 19, 198 9 (714) 8460770 Page 2 of the creek, so that the water level is increased throughout the wetland (due to the positive pressure nature of the artesian springswhichfeedthecreek, water height in the creek can be adjusted byraisingorloweringthedrainageoutletsofthecreekatitswestern end. The springs will keep pumping water up to the level of drainage. If the drainage is blocked, flooding of the area occurs, which is what happened last Spring when a worker bulldozed over the drain pipe. The drain at the western end, if raised two feet, will raise the waterlevelinthemiddleofthecreek, where it is now needed). Water can also be restored into the creek by dredging down closer to thewatertable. Water can also be brought up from the water table by apump, which might actually be cheaper to maintain than regular andrepeatedbackhoeoperations (the Environmental Nature Center also usesapumptocirculatewater, although it has to purchase its water, while here it is free and available). In any case, a well thought out plan should be considered andanalyzed, then implemented, rather than allowing precipitous and indiscriminate removal of vegetation as requested by Vector Control. I would like to request that the Public Works Department and the General Services Department not be authorized to remove the vegetation until our group can work with the City in devising an alternative plan. In addition, I would also recommend that since the Department of Fish and Game has determined that this area represents a wetland, and since this wetland lies within the Coastal Zone, that a CoastalPermitbeappliedfor, before indiscriminate disruption of the floraandfaunainthecreek. In this same regard, and since the status of this area as a wetland is disputed by some of the City's staff, I would like to request that the City initiate the proper procedures to determine once and for all that this area is indeed a wetland, so that in thefuture, this wetland will receive the normal official protections that heretofore have been lacking. Thank you. Attached: Register news article 3100T Sincerely, Jan D. Vandersloot MD 9-225 1 613C Wednesday, March 2 - Thursday, March 3, 1988 The Orange County Register 3 Envie®nmentalists, Juaneno I6dians fight parking -in pian Newport would hurt wetlands, historic pitch mine, they say By Roberta Landman 1 ho Register NEWPORT BEACH — A 40- space aspaceparkinglotforanunirn- proved section of Avon Street is raising the buckles of Newport Beach environmentalists and an Indian tribe. Environmental -minded citizens are fighting the city's parking -lot plan, which Includes paving over - what the city calls an old Avon Street drainage ditch and digging Bill 15 feet from the cliff that the narrow 600 foot -long, shallow we- tc{wey hugs. The env ironmentnlists say the water that varies in depth from 2 itches to 2 feet ties not in a drain- age ditch, but in a natural freshwa- ter wetland habitat for wildlife, in- sects and plants — the only re- maining wetlands in Newport Heights. And somewhere within the near by cliff is the site of a long -hidden Indian pitch mine, they said. "Indi- ans got pitch for (sealing) their boats there," said Newpt flarbor Iligh School teacher Robert Jfouse, who opposes the plan. Along with Ilouse and like-mind- ed people In the Newport Heights neighborhood, the Environmental Natui a Center and the science fac- ulty at Newport Iforbor 1118h School, the Juaneno Indian tribe also Is keeping a wary eye on the city's plans. Tribe member Gloria Felix of Huntington Beach said the tribe's oral history recounts a pitch mine In the Avon Street area. If the cliff Is excavated, she said the remain- ing 2.500 Jusnenos would want the work completed carefully and done with a Juaneno tribe members at the site. Tete tribe thnt once romtted Son Diego and Orange counties tied Its largest village In San .Tuan Capistrano, site said. Although city representatives Tied promised an archeologist would monitor excavation, Felix said past excuvations in other ar- eas have resulted 1--„rclwologists Incorrectly attril- 'unncnoar- tifacts end boat her trifle. blouse insists 0. Strectnite is ,enrtb sovinp for its historical value and for its value as a re- source for education. For the past 35 years, the wetlands strip has been s nature -study site for high- school students engaged In science assignments, he said. Ilia sentiments are shared by Jan Vandersloot, leader of a pro - lest group that has named itself Friends of the Avon Street Wet- lands. Vanderaloot, a Newport Heights resident, has commisafoned blolog- ical and geological assessments of the Avon Street area and cliff site. The results of a study by biological consultant Karlin Marsh confirm Vanderoloot's notion that the area, though small, is a natural wetlands area — a remaining piece of histor- ic wetlands once extensive In the Newport Beach area. The (freshwater) wetland is small, flat it's nice, and quite un- usual in something as intensely de- veloped on area as Newport Heights," Marsh said. It's a reminder of what used to be. ... the last of its kind. That makes it special." It has a good assortment of plants and animals within the en- vironment ... aquatic insects - butterflies nectaring on flowers the watercress is coming into bloom..., It's functioning as a for- aging source and a source of water of animals and birds," Marsh said. I'm not a hydrologist," Marsh said, "but I observed what ap- Ef"ared to be spring -fed seepageIothatlittlecreek, movement from where it spring seemed to be entering it." Wherever that water comes from, Marsh sold, "It's not surface runoff." City officials in the planning and Public Works departments think otherwise. They say the water comes from urban runoff _ the residue of watering lawns in New- port Heights mixed with is high wa. ter table. The city also received contrary biological information from a study it commissioned. 'Mat re- port, by Hnnen Swfraky of Michael Brandmmt Associates, found stag- nant water intend of moving wa- ter on the Avon Street waterway and said the urea did not represent a significant biological resource. One report, however, did estub- fish the area as a wetland habitat, hill It diminished it in Importance. Both Vauderst(MA and city offl- clnls asked the state Department or Fish and Game to evaluate the Jan D. Vanderatoct, left, and his children, Jon, 4, and Tests me* ta4 rrrtn H.pt.t.r Clark, and Joan Watt, far right. These and other area reidentts arse protesting as city plan to Awn Sheet Creaky ebng with Peggy and d I n an area Where Newport Beech wards to put up a perking lot. laevo error what they feel to a natural wetland In Vandersloof said his citizens group is prepared to take legal action to stop the city from continuing with the project. The future of the parking lot also will depend on how much the city wants to listen to another protest group, the Newport Heights Community association, which is opposed to having a metered parking lot nearby for tear It will drive more people who use the Mariners Mlle commercial area 10 look for II'ee parking on neighborhood streets. biological worth of the area. Both were told Its value as a wetlands WOE Insignfflcnnt on a regional ba- sis. Fish and Game sanctioned the city's filling in the area on a trade- off basis, Dort Webb of the city's Public Works Department said. In exclt.-tnge for F" ' -vnd Game nrtptuvill,thecity, tihureto a fluid for a Fish t Ic frl'h* Crater prnject at if,. th or Rfg Cnn.yun. The city's c„nttihutiou, pr,tbnbly In the low thrrusands," will be established "at the tine we go forward whir the project," Webb said. parking, the city plans to cut away IS feet of cliff slope and build a retaining wall. Vundcrsloot likes to think the soli studies are necessary because na- ture is contriving against the city, sending up waters from under. ground springs to stop the project's advancement. Webb said, "We're aware there's water-" But the city, he said, would be able to design around whatever water there might be without any major expense. Vandersloot said his citizens group is prepared to talte legal ac. tion to stop the city from continu-• Ing with the project. The future of the parkinr lot also will depend on holy much the city wants to listen to another protest group. The Newport Heights Communi- ty Association is opposed tohe%.ing e metered parking lot nearhp for fear it will drive more people who use the Mariners Mlle nummercini area to look for free pnrkiug on ueighborbood streets. We're getting terrible traffic Problems," said Gail Dealtner, ilie organizurlon's president. R'chhsaid heexpects Ibeproject Are the Families of 21l years ago the same as tilt. families cd to begin inJune.'rhe city Is waiting t,1d.i5"% We know hcttct. That's wiry Accent foruscs un I.iniilir, for results of soil studies "to estah. and family relationships each 1 bursday. flow at(- fish tefishwhatthegroundistikeatbileielatinrtshipsrhanr, what trends are rr terging and It, %%, ,.ut riirf) rerali ing xrtll." Webb will. You I,ctt'.-T-pc V cr Iat.1104-]S of IIIc huusriud,l" I Tucreute cuough space for bend -ht each ,vt•ck. whe fit cxplmrs tltr Family. 9-226 Not d v' al u,., 4v s c a- l e of S iG+e r- k wL O.p o h l . 1 1:x0LAndAtiOK) i g 5 rrh, 0r seep b y -C aL k I" s / v F -e Cr,c ak- or j)-uWo147" slo4 e bi// si ef yr,edsvird wr1, a, yaMd-l.ld c%owr,rr peso' p R- r ICA rO a c i aAd i O w calYP Casfor% eaheY• i '/ _ '`b voN,= fie .....-— • csfw+ Orf G:t o t 19mar8" 9-227 WETLAND DETERMINATION DATA FORM — Arid West Region Project/Site: Avon Street Wetland City/County. Newport Beach Sampling Date: 9-3-19 Applicant/Owner. City of Newport Beach State: C_ Sampling Point: 1 Investigator(s): Tony Bomkamp Section, Township, Range: Section 28, T6S, R10W, Landform (hillslope, terrace, etc.): Slope Local relief (concave, convex, none): Concave Slope (%): <2% Subregion (LRR): L Lat 33° 37'19.17" Long: 117° 55'27.17" Datum: Nay83 Sail Map Unit Name: NA NWI classification: NA - Not in Wetland Are climatic / hydrologic conditions on the site typical for this time of year? Yes V( No (If no, explain in Remarks.) Are Vegetation Sell , or Hydrology significantly disturbed? Are 'Normal Circumstances" present? Yes No Are Vegetation . Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the sampled Area Hydric Soft Present? Yes No within a Wetland? Yes No Welland Hydrology Present? Yes No Remarks: VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 1 1 Absolute Dominant Indicator Cover Species? Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 1 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0 (AIB) 2. 3. 4. Sapling/Shrub Stratum (Plot size: 1. Total Cover Prevalence Index worksheet: Total % Cover of: Multiply bv: OBL species x 1 = FACW species x2= FAC species x3= FACU species 75 x4= 300 UPL species X5= Column Totals: 75 (A) 300 (B) Prevalence Index = B/A = 4.0 2. 3. 4. 5. Total Cover Herb Stratum (Plot size: 1 1. Heliotroplum curassavicum 75 Yes FACU 2. 3. 4. Hydrophyttc Vegetation Indicators: Dominance Testis >50`Yo Prevalence Index is 53.0' Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 5. 6. 7.. 8. Total Cover Woody Vine Stratum (Plot size: 1 I. 2. Total Cover Bare Ground in Herb Stratum 25 % Cover of Biotic Crust 0 Hydrophytic Vegetation Present? Yes No Remarks: US Army Corps of Engineers Arid West – Version 2.0 9-228 SOIL Sampling Point: 1 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of Indicators.) Depth Matrix Redox Features Primary Indicators (minimum of one reautredE check Cinches) Color (moist) % Color (moist) _ % Tvor Loc' Texture Remarks 0-4 2.5Y 3/3 100 None 0 NA NA SL No Hydric Indicators 4-10 2.5Y 3/3 100 None 0 NA NA Loam No Hydric Indicators 10-14 2.5Y 3/2 95 . 10YR 4/6 5 C M SCL Redox below 12 inches Type: C=Concentration, D=De letion, RM=Reduced Matrix. CS=Covered or Coated Sand Grains. 2Location: PL=Pore Unin M=Matdx. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils': Histosol (Al) Sandy Redox (S5) 1 cm Muck (Ag) (LRR C) Hlstic Epipedon (A2) Stripped Matrix (S6) 2 cm Muck (A10) (LRR B) Black Histic (A3) Loamy Mucky Mineral (Ft) Reduced Vertic (F18) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Red Parent Material (TF2) Stratified Layers (A5) (LRR C) Depleted Matrix (F3) Other (Explain in Remarks) 1 cm Muck (A9) (LRR D) Redox Dark Surface (F6) Depleted Below Dark Surface (Al 1) Depleted Dark Surface (F7) Thick Dark Surface (Al2) Redox Depressions (F8) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Vernal Pools (F9) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Wetland Hydrology Present? Yes No unless disturbed or problematic. Restrictive Layer (if present): Type: Remarks: Depth Qnches): Hydric Soil Present? Yes No Remarks: heliotrope is location of wetland boundary. Redox found at 10 inches. Redox Dark Surface (F6) requires layer at least 4 inches thick in upper 12 inches. Does not meet criteria and indicates, along with vegetation and hydrology data that point is just outside wetland boundary. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one reautredE check all that apolly) Secondary Indicators (2 or more reculred) Surface Water (At) _ Salt Crust (Bt t) _ Water Marks (B1) (Rlverine) High Water Table (A2) _ Biotic Crust (312) _ Sediment Deposits (82) (Rlvertne) Saturation (A3) " Aquatic Invertebrates (813) _ Drift Deposits (83) (Riverine) Water Marks (Bt) (Nonrivorine) _ Hydrogen Sulfide Odor (Cl) Drainage Patterns (B10) Sediment Deposits (82) (Nonriverine) _, Oxidized Rhizospheres along Living Roots (C3) _ Dry -Season Water Table (C2) Drift Deposits (B3) (NonHverine) — Presence of Reduced Iron (C4) _ Crayfish Burrows (C8) Surface Soil Cracks (66) _ Recent Iron Reduction in Tilled Solis (CO) _ Saturation Visible on Aerial Imagery (C9) Inundation Visible on Aerial Imagery (137) _ Thin Muck Surface (CT) _ Shallow Aquitard (D3) Water -Stained Leaves (B9) Other (Explain in Remarks) FAC -Neutral Test (135) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No Includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), if available: Remarks: Wetland hydrology absent within are dominated by alkali heliotrope, consistent with lack of hydric soils. Wetland hydrology present within wetland area show that abrupt transition from alkali bulrush to alkali heliotrope is location of wetland boundary. US Army Corps of Engineers Arid West - Version 2.0 9-229 WETLAND DETERMINATION DATA FORM — Arid West Region Project/Site: Avon Street Wetiand City/County: Newport Beach Sampling Date: 9-3-19 Applicant/Owner: City of Newport Beach State: CA Sampling Point: 2 Investigator(s): Tony Bomkamp Section, Township, Range: Section 28, T6S, R10W. Landform (hillslope, terrace, etc.): Slope Wetland Local relief (concave, convex, none): Concave Slope (%): <2% Subregion (LRR): L Lat: 33° 37'19.17" Long: 117° 55'27.17" Datum: Nay83 Soil Map Unit Name: NA NW classification: Palustrine Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain In Remarks.) Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes No Are Vegetation . Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, Important features, etc. HydrophyUc Vegetation Present? Yes Na Is the Sampled Area Hydric Soil Present? Yes No within a Wattand? Yes No Welland Hydrology Present? Yes No VEGETATION — Use scientific names of plants. US Army Corps of Engineers Arid West – Version 2.0 9-236 Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: ) vet Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 1 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species Total Cover That Are OBL, FACW, or FAC: 100 (AIB) Saalino/Shrub Stratum (Plot size: ) t Prevalence Index worksheet: Total % Cover of: Multbly by: 2 3 081- species 70 x f = 70 4 FACW species x2= 5 FAC species x3= Total Cover FACU species 10 x4= 40 Herb Stratum (Plot size: ) UPL species x5= t. Schoenoplectus maritlmus 70 Yes OBL Column Totals: 80 (A) 110 (B) 2. Heliotropium curassavicum IQ No FACU 3 Prevalence Index = B/A = 1.4 4 Hydrophytic Vegetation Indicators: 5 Dominance Test is >50% Prevalence index Is s3.0' 6. Morphological Adaptations' (Provide supporting7dataInRemarksoronaseparatesheet) 8. Problematic Hydrophytic Vegetation' (Explain) Total Cover Woody Vine Stratum (Plot size: ) Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 2. HydrophyticTota! Cover Vegetation Bare Ground in Herb Stratum 20 % Cover of Biotic Crust 0 Present? Yes No Remarks: US Army Corps of Engineers Arid West – Version 2.0 9-236 SOIL Sampling Point: 2 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features Primary Indicators (minimum of one reaulred: check inches) Color (moist) - _ Color (moist) _ % _IyLeL Loci Texture Remarks Type: C=Concentration, D=De letlon, RM=Reduced Matrix, CS -Covered or Coated Sand Grains. Location: PL=Pore Univ , M=Matrix. Hydric Soll Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric So[fs3: Hislosol (Al) Sandy Redox (S5) t cm Muck (Ag) (LRR C) Histic Epipedon (A2) Stripped Matrix (S6) 2 cm Muck (A10) (LRR B) Black Hlstic (A3) Loamy Mucky Mineral (F1) Reduced Vertic (FIB) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Red Parent Material (TF2) Stratified Layers (A5) (-RR C) Depleted Matrix (F3) Other (Explain in Remarks) 1 cm Muck (A9) (LRR 0) Redox Dark Surface (F6) Inundatlon Visible on Aerial Imagery (137) Depleted Below Dark Surface (At 1) T Depleted Dark Surface 0'7) Water -Stained Leaves (139) Thick Dark Surface (Al2) Redox Depressions (F8) Indicators of hydrophyUc vegetation and Sandy Mucky Mineral (S1) T Vernal Pools (F9) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Depth (inches): 2 inches unless disturbed or problematic. Restrictive Layer Of present): Water Table Present? Yes No Depth (inches): Type: Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No Hydric Sol[ Present? Yea _ V No Remarks: HYDROLOGY Welland Hydrology Indicators: Primary Indicators (minimum of one reaulred: check all that aooly) Secondary Indicators (2 or more reaulred) Surface Water (At) Salt Crust (B11) _ Water Marks (Bt) (Riverine) High Water Table (A2) Biotic Crust 0312) _ Sediment Deposits (32) (Rlverine) Saturation (A3) Aquatic Invertebrates (813) _ Drift Deposits (B3) (Riverine) Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) _ Drainage Patterns (1310) Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) _ Dry -Season Water Table (C2) Drift Deposits (B3) (Nonriverine) Presence of Reduced iron (C4) _ Crayfish Burrows (CS) Surface Soil Cracks (B6) Recent Iron Reduction In Tilled Soils (C6) _ Saturation Visible on Aerial Imagery (C9) Inundatlon Visible on Aerial Imagery (137) Thin Muck Surface (C7) _ Shallow Aquitard (D3) Water -Stained Leaves (139) Other (Explain in Remarks) FAC -Neutral Test (D5) Field Observations: Surface Water Present? Yes No Depth (inches): 2 inches Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No includes ca ills fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: US Army Corps of Engineers Arid West - Version 2.0 9-231 WETLAND DETERMINATION DATA FORM — Arid West Region Project/Site: Avon Street Wetland City/County: Newport Beach Sampling Date: 9-3-19 A licanuowner. City of Newport BeachPP State: CA Sampling Point 3 Investigator(s): Tony Bomkamp Section, Township, Range: Section 28, T6S, R10W, Landform (hillslope, terrace, etc.): Slope Wetland Local relief (concave, convex, none): Concave Slope (%): <2% Subregion (LRR): L Lat: 33° 37'19.17" Long: 117' 55'27.17" Datum: Nav83 Soil Map Unit Name: NA NW classification: Palustrine Are climatic / hydrologic conditions on the site typical for this time of year? Yes Na (If no, explain in Remarks.) Are Vegetation Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes No Are Vegetation Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Welland Hydrology Present? Yes No I VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 1 1 • Absolute Dominant Indicator over Species? StatUS Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 1 (A) Total Number of Dominant Specles Across All Strata: 1 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 100 (AIB) 2. 3. 4. Sapfinn/Shrub Stratum (Plot size: 1 1. Total Cover Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 70 x 1 = 70 FACW species x2= FAC species x3= FACU species x4= UPL species x5= Column Totals: 70 (A) 70 (B) Prevalence Index = B/A = 1.0 2. 3. 4. 5. Total Cover Herb Stratum (Plot size: 1 1. Schoenoplectus maritimus 50 Yes OBL 2. Tvpha domingensis 2_ yes FACU 3. 4. Hydrophytic Vegetation Indicators: Dominance Test Is >50% L Prevalence Index Is 53.0' ModatalIngical Remaarrks orlon aonseparatesheet) supporting Problematic Hydrophytic Vegetation' (Explain) Indicators of hydric soil and welland hydrology must be present, unless disturbed or problematic. 5. 6. 7. 8. Total Cover Woody Vine Stratum (Plot size: 1 1, 2. Total Cover Bare Ground In Herb Stratum 10 % Cover of Biotic Crust 0 Hydrophytic Vegetation Present? Yes No Remarks: US Army Corps of Engineers Arid West — Version 2.0 9-232 SOIL Sampling Point: 3 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of Indicators.) Depth Matrix Redox Features Primary Indicators (minlmum of one required: check inches) Color (moist) % Color (moist) —% Tvoe Locr Texture Remarks Type: C=Concentration D=De lefEon RM --Reduced Matra, CS=Covered or Coated Sand Grains, 2Location: PL=Pore Linin M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric S01193: Histosol (Al) u Sandy Redox (S5) 1 cm Muck (A9) (LRR C) Hlstic Epipedon (A2) Stripped Matrix (S6) 2 cm Muck (A10) (LRR B) Black Histic (A3) Loamy Mucky Mineral (F1) Reduced Vertic (F18) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Red Parent Material (TF2) Stradfled Layers (A5) (LRR C) Depleted Matrix (F3) Other (Explain in Remarks) 1 cm Muck (A9) (LRR D) Redox Dark Surface (F6) Thin Muck Surface (C7) _ Depleted Below Dark Surface (All) Depleted Dark Surface (F7) Other (Explain In Remarks) _ Thick Dark Surface (Al2) Redox Depressions (F8) 3Indicators of hydrophydc vegetation and Sandy Mucky Mineral (S1) Vernal Pools (179) wetland hydrology must be present, Sandy Gleyed Matrix (S4) unless disturbed or problematic. Restrictive Layer (If present): Depth (inches): Type: Saturation Present? Yes No Depth (inches): Depth (inches): includes ca ilia fringe) Hydric Soil Present? Yes No Remarks: Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minlmum of one required: check all that anoly) _ Secondary Indicators (2 or more reauired) Surface Water (Al) Salt Crust (1311) _ Water Marks (61) (Riverine) High Water Table (A2) Biotic Crust (B12) _ Sediment Deposits (B2) (Riverine) Saturation (A3) Aquatic Invertebrates (B13) — Drift Deposits (B3) (Riverine) Water Marks (131) (Nonriverine) Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) Sediment Deposits (82) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) _ Dry -Season Water Table (C2) Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) _ Crayfish Burrows (C8) Surface Soil Cracks (86) Recent Iron Reduction In Tilled Soils (C6) _ Saturation Visible on Aerial Imagery (C9) Inundation Visible on Aerial Imagery (87) Thin Muck Surface (C7) _ Shallow Aqultard (D3) Water-Stalned Leaves (89) Other (Explain In Remarks) _ FAC -Neutral Test (05) Field Observations: Surface Water Present? Yes No Depth (inches): 2 inches Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No includes ca ilia fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: US Amry Corps of Engineers Arid West - Version 2.0 9-233