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HomeMy WebLinkAbout20191218_WQMPWater Quality Management Plan (WQMP) Priority Project Project Name: Custom Residence for 5009 Seashore, LLC Prepared for: 5009 Seashore, LLC 1 Corporate Plaza Suite 110 Newport Beach, CA 92625 Prepared by: Thomas M. Ruiz, P.E. Forkert Engineering & Surveying, Inc. 22311 Brookhurst Street, Ste 203 Huntington Beach, CA 92646 714-963-6793 Date: December 12, 2019 PA2019-264 Water Quality Management Plan (WQMP) Project Owner's Certification Permit/ Application No. Grading Permit No. .............. -···· -····· Tract/Parcel Map No. Building Permit No. ·-···----··· ........................ .. CUP, SUP, and/ or APN (Specify Lot Numbers if Portions of Tract) APN: 424 451 02 This Water Quality Management Plan (WQMP) has been prepared for 5009 Seashore, LLC by Forkert Engineering & Surveying, 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 Santa Ana Region . 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: 5009 Seashore, LLC Title Company 1 Corporate Plaza Address Suite 110 Newport Beach, CA 92625 Email Telephone# Signature I Date I 5009 Seashore Dr Owner's Certification PA2019-264 Water Quality Management Plan (WQMP) Contents Page No. I. II.1 II.2 II.3 II.4 II.S III.1 III.2 III.3 IV.1 IV.3.1 IV.3.2 IV.3.3 IV.3.4 IV.3.5 IV.3.7 IV.3.8 IV.3.9 V VI VII Discretionary Permits and Water Quality Conditions .................... 3 Project Description ....................................................................... 4 Potential Stormwater Pollutants .................................................. 5 Hydrologic Conditions of Concern ................................................ 6 Post Development Drainage Characteristics ................................ 7 Property Ownership/Management ............................................... 7 Physical Setting ............................................................................ 8 Site Characteristics ....................................................................... 8 Watershed Description ................................................................. 9 Project Performance Criteria ...................................................... 10 Hydrologic Source Controls .................................................. 13 Infiltration BMPs .................................................................. 14 Evapotranspiration, Rainwater Harvesting BMPs ................ 15 Biotreatment BMPs .............................................................. 16 Hydromodification Control BMPs ......................................... 17 Treatment Control BMPs ...................................................... 18 Non-structural Source Control BMPs ................................... 19 Structural Source Control BMPs ........................................... 20 Inspection/Maintenance Responsibility for BMPs ..................... 21 Site Plan and Drainage Plan ....................................................... 22 Educational Materials ................................................................. 23 Attachments Attachment A .................................................................................................... PLOT Plan Attachment B ................................................................................. Educational Materials Attachment C ........................................ Reference Exhibits from County of Orange TGD 5009 Seashore Dr ii PA2019-264 Water Quality Management Plan (WQMP) Section I Discretionary Permit(s) and Water Quality Conditions Provide discretionary permit and water quality information. Refer to Section 2.1 in the Technical Guidance Document (TGD) available from the Orange County Stormwater Program (ocwatersheds.com). Project Infomation Permit/ Application No. Permit Tract/Parcel Map No. Lot 5 of Block 50 of Tract No. 3813 ···•··· .... ·········--···-·· Additional Information/ Comments: Water Quality Conditions Priority Project: Water Quality Impervious surface of2,500 square feet or more located within or directly Conditions adjacent to (within 200 ft.) or discharging directly to receiving water within (list verbatim) environmentally sensitive areas (San Diego Creek, upper and lower Newp01i Bay, Buck Gully, Los Trankos, Little Corona del Mar Beach, Crystal Cove State Beach). Watershed-Based Plan Conditions Provide applicable conditions from watershed - based plans including WIHMPs and TMDLS. 5009 Seashore Dr No WIHMP approved for Lower Newport Bay TMDL: -Indicator Bacteria, Nutrients, Pesticides, Sedimentation/Siltation, Copper Section I Page 3 PA2019-264 Water Quality Management Plan (WQMP) Section II Project Description 11.1 Project Description Provide a detailed project description including: • Project areas; • Land uses; • Land cover; • Design elements; • A general description not broken down by drainage management areas (DMAs). Include attributes relevant to determining applicable source controls. Refer to Section 2.2 in the TGD for information that must be included in the project description. Development Category (Verbatim from WQMP): Description of Proposed Project Priority Project: Impervious surface of2,500 square feet or more located within or directly adjacent to (within 200 ft.) or discharging directly to receiving water within environmentally sensitive areas (San Diego Creek, upper and lower Newport Bay, Buck Gully, Los Trankos, Little Corona de! Mar Beach, Crystal Cove State Beach). ·---------------------------------t------------------------------------------------T---------------------------------- Project Area (ft2): 1,698 ! Number of Dwelling Units: 1 ! SIC Code 1521 •---------------------------------r------------------------------------------------I---------------------------------- Narrative Project Description: The project consists of the construction of a single family residence with an attached garage, concrete walkways and patios. The project is located in Newport Beach, CA in the NOC Permit Area. ---------------------------------t----------------------------------------T------------------------------------------ : Pervious : Impervious I I I I Project Area t---------------------r-------------------t---------------------T------------------- : Area : : Area : I I p I I p : : ercentage : : ercentage : (acres or sq ft) : : (acres or sq ft) : I I I I I I I I ---------------------------------t---------------------r-------------------r----------------------r------------------- Pre-Project Conditions : 0 sf : 0% : 1,698 sf : 100% I I I I I I I I ---------------------------------t---------------------t-------------------t----------------------t------------------- Post-Pro1·ect Conditions : 0 sf : 0% : 1,698 sf : 100% I I I I I I I I ·---------------------------------t---------------------~-----------------_ .... _____________________ _., __________________ _ Drainage Patterns/ Connections 5009 Seashore Dr WQMP I : The lot has been grade fairly level and drains slightly to Seashore Drive. There I : are no storm drain connections. I I I Section II Page 4 PA2019-264 Water Quality Management Plan (WQMP) II.2 Potential Stormwater Pollutants Determine and list expected stormwater pollutants based on land uses and site activities. Refer to Section 2.2.2 and Table 2.1 in the TGD for guidance. Pollutant Suspended-Solid/ Sediment Nutrients ·············· Heavy Metals ·········· -· Pathogens (Bacteria/Virus) Pesticides ···········--···- Oil and Grease ··········· ... Toxic Organic Compounds ·····-···· Trash and Debris 5009 Seashore Dr WQMP Pollutants of Concern Circle One: E= Expected to be of concern N =Not Expected to be of concern E ··-·-·····----...... E ····-······-···· N ·-·· ·····-···············-----·-···· E ....... E ············ E N ········-···· E Additional Information and Comments 303(d) listed impairment/TMDL 303(d) listed impairment/TMDL 303(d) listed impairment/TMDL Not expected per OCTGD Table 2.1. 303(d) listed impairment/TMDL 303(d) listed impairment/TMDL ............... ··- ·······--·· ............... Section II Page 5 PA2019-264 Water Quality Management Plan (WQMP) 11.3 Hydrologic Conditions of Concern Determine if streams located downstream from the project area are determined to be potentially susceptible to hydromodification impacts. Refer to Section 2.2.3.1 in the TGD for NOOC or Section 2.2.3.2for <SOC>. [8J No -Show map D Yes -Describe applicable hydrologic conditions of concern below. Refer to Section 2.2.3 in the TGD. Based on Figure XVI-3d of the OCTGD, the project does not fall in an area of Potential Areas of Erosion, Habitat, & Physical Structure Susceptibility. Therefore no HCOC exists. See Attachment C. 5009 Seashore Dr WQMP Section II Page 6 PA2019-264 Water Quality Management Plan (WQMP) II.4 Post Development Drainage Characteristics Describe post development drainage characteristics. Refer to Section 2.2.4 in the TGD. Most of the runoff will be from the roof which will be collected into an area drain line as well as any surface water. The runoff will be piped to a rock-filled infiltration trench located next to Seashore Drive. After filtering through the trench, any overflow will drain onto the street. From here, the runoff will drain into the City of Newport Beach's storm drain system. The project runoff will eventually drain into the Pacific Ocean. There will be no direct storm drain connections. II.5 Property Ownership/Management Describe property ownership/management. Refer to Section 2.2.5 in the TGD. The property owner will be responsible for the long term maintenance of the facilities. 5009 Seashore Dr WQMP Section II Page 7 PA2019-264 Water Quality Management Plan (WQMP) Section Ill Site Description III.1 Physical Setting Fill out table with relevant information. Refer to Section 2.3.1 in the TGD. Planning Area/ West Newport Beach Association Community Name .... . ...... ·························---······ 5009 Seashore Drive Location/ Address ... Newport Beach, CA Land Use Residential ················· ·········--················· Zoning Residential ··········--·--·············· Acreage 0.0390 .............. Per the soils report prepared by Coast Geotechnical Inc., the earth Predominant Soil Type materials encountered were classified as artificial fill for about 1.5' underlain by native soils to the maximum depth explored. 111.2 Site Characteristics Fill out table with relevant information and include information regarding BMP sizing, suitability, and feasibility, as applicable. Refer to Section 2.3.2 in the TGD. Precipitation Zone Topography 5009 Seashore Dr WQMP 0.70" per Orange County Rainfall Zones Map, Figure XVI-1 of the Technical Guidance Document ----··········-··-···············-·····-·------111 The project site is located at 5009 Seashore Drive, in the City of Newport Beach, California. The parcel is rectangular in shape, near level, and bordered by Seashore Drive to the north, the beach to the south, and residential properties to the east and west. The lot is currently developed with a two story residential structure and hardscape Section III Page 8 PA2019-264 Water Quality Management Plan {WQMP) ---------------····················-·····-····-········································---------······························-·····························------~, Drainage Pattems/Connections Soil Type, Geology, and Infiltration Properties The lot has been grade fairly level and drains slightly to Seashore Drive. There are no storm drain connections. >---------------···························-···-·--·-·-·-------------•1 Native soils encountered consisted of clean, fine to coarse grained sand, tan to tan brown and gray tan in color, damp to wet, and generally medium dense, to the maximum depth explored of 12.5 feet. Site Characteristics (continued} Hydro geologic Groundwater was encountered at 7 feet below grade. (Groundwater) Conditions Geotechnical Conditions Native soils encountered consisted of clean sand, fine to coarse-grained, tan (relevant to infiltration) to yellow tan in color, damp to wet, and generally medium dense, to maximum depth explored of 12.5 feet. ..................... Off-Site Drainage There is no off-site drainage onto the site. ···--·-··------------············ Utility and Infrastructure No utilities on lot except for service lines. Information III.3 Watershed Description Fill out table with relevant information and include information regarding BMP sizing, suitability, and feasibility, as applicable. Refer to Section 2.3.3 in the TGD. Receiving Waters ·······-··· 303(d) Listed Impairments ....... Applicable TMDLs Pollutants of Concern for the Project Environmentally Sensitive and Special Biological Significant Areas 5009 Seashore Dr WQMP Lower Newport Bay ·········· Lower Newport Bay Indicator Bacteria, Nutrients, Pesticides, Sedimentation/Siltation, Copper Sediments, Nutrients, Pathogens, Pesticides, Oil & Grease, Trash & Debris The site runoff does not discharge directly to an ESA. The site co-mingles with runoff from other properties before entering into the City's storm drain Section III Page 9 PA2019-264 Water Quality Management Plan (WQMP) Section IV Best Management Practices (BMPs) IV. 1 Project Performance Criteria Describe project performance criteria. Several steps must be followed in order to determine what performance criteria will apply to a project. These steps include: • If the project has an approved vVIHMP or equivalent, then any watershed specific criteria must be used and the project can evaluate participation in the approved regional or sub- regional opportunities. The local Permittee planning or NPDES staff should be consulted regarding the existence of an approved WIHMP or equivalent. • Determine applicable hydromodification control performance criteria. Refer to Section 7.II- 2.4.2.2 of the Model WQMP. • Determine applicable LID performance criteria. Refer to Section 7.II-2.4.3 of the Model WQMP. • Determine applicable treatment control BMP performance criteria. Refer to Section 7.II-3.2.2 of the Model WQMP. • Calculate the LID design storm capture volume for the project. Refer to Section 7.II-2.4.3 of the ModelWQMP. (NOC Permit Area only) ls there an approved WIHMP or equivalent for the project area that includes more stringent LID feasibility criteria or if there 21re opportunities identified for implementing LID on regional or sub-regional b21sis? If yes, describe \VIHMP feasibility criteria or regional/sub-regional LID opportunities. 5009 Seashore Dr WQMP YES □ NO[gj Section IV Page 10 PA2019-264 Water Quality Management Plan (WQMP) Project Performance Criteria ( continued) 1----------...---------------------········••·••··-·--··-------------111 If HCOC exists, list applicable hydromodification control performance criteria (Section 7.II-2.4.2.2 in MWQMP) Based on Figure XVI-3d of the OCTGD, the project does not fall in an area of Potential Areas of Erosion, Habitat, & Physical Structure Susceptibility. Therefore no HCOC exists. See Attachment C 1.---------+----------------------···········--------------111 List applicable LID performance criteria (Section 7.II-2.4.3 from MWQMP) Priority Projects must infiltrate, harvest and use, evapotranspire, or biotreat/biofilter, the 85th percentile, 24-hour storm event (Design Capture Volume). A properly designed bio-treatment system may only be considered if 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 bio-treatment may be provided for the remaining design capture volume. •-----------+-----------·······-------------------·-------• List applicable treatment control BMP performance criteria (Section 7.II-3.2.2 from MWQMP) If treatment control BMPs can treat all of the remaining unmet volume and have a medium to high effectiveness for reducing the primary POCs, the project is considered to be in compliance; a waiver application and participation in an alternative program is not required. ··········-----············--f-----------------------····-------------1 Calculate LID design storm capture volume for Project. 5009 Seashore Dr WQMP V = C x d x A x 43560 sf/ac x 1/12 in/ft C = runoff coefficient= (0.75 x imp+ 0.15) =0.75 x 1.0 + .15 = 0.90 d = storm depth (inches) =0.70 in Per Fig XVI+ OC TGD A= tributary area (acres)= 1698 SF= 0.039 ac V= 0.90 x .70 x 0.039 x 43,560 x 1/12 = 89 cf Section IV Page 11 PA2019-264 Water Quality Management Plan (WQMP) IV.2. SITE DESIGN AND DRAINAGE PLAN Describe site design and drainage plan including • A narrative of site design practices utilized or rationale for not using practices; • A narrative of how site is designed to allow BMPs to be incorporated to the MEP • A table of DMA characteristics and list of LID BMPs proposed in each DMA. • Reference to the WQMP plot plan. • Calculation of Design Capture Volume (DCV) for each drainage area. • A listing of GIS coordinates for LID and Treatment Control BMPs (unless not required by local jurisdiction). Refer to Section 2.4.2 in the TGD. The project consists of the construction of a single family residence with an attached garage, walkways and a patio. The site's native soil consists of clean sand, fine to coarse-grained. Infiltration trenches will be used to satisfy the requirements of the WQMP The site will be divided into 2 Drainage Management Areas (DMA). Most of the runoff will be from the roof which will be collected into an area drain line. This runoff as well as the surface runoff will be collected and piped to a rock filled infiltration trench next to Seashore Drive. After filtering through the trench, any overflow will drain onto the street. From here, the runoff will drain into the City of Newport Beach's storm drain system. See Attachment A for PLOT plan. 5009 Seashore Dr WQMP Section IV Page 12 PA2019-264 Water Quality Management Plan (WQMP) IV.3 LID BMP SELECTION AND PROJECT CONFORMANCE ANALYSIS Each sub-section below documents that the proposed design features conform to the applicable project performance criteria via check boxes, tables, calculations, narratives, and/ or references to worksheets. Refer to Section 2.4.2.3 in the TGD for selecting LID BMPs and Section 2.4.3 in the TGD for conducting confonnance analysis with project perfonnance criteria. IV.3.1 Hydrologic Source Controls If required HSCs are included, fill out applicable check box forms. If the retention criteria are otherwise met with other LID BMPs, include a statement indicating HSCs not required. 5009 Seashore Dr WQMP Name 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: Other: Included? □ □ □ □ □ □ □ □ □ Section IV Page 13 PA2019-264 Water Quality Management Plan (WQMP) IV.3.2 Infiltration BMPs Identify infiltration BMPs to be used in project. If design volume cannot be met state why BMPs cannot be met Name Included? Bioretention without underdrains □ Rain gardens □ Porous landscaping □ Infiltration planters □ Retention swales □ Infiltration trenches cg] Infiltration basins □ Drywells □ Subsurface infiltration galleries □ French drains □ Permeable asphalt □ Permeable concrete □ Permeable concrete pavers □ Other: □ Other: □ Show calculations below to demonstrate if the LID Design Strom Capture Volume can be met with infiltration BMPs. If not document how much can be met with infiltration and document why it is not feasible to meet the full volume with infiltration BMPs. Infiltration trench, 15 Lfper 2,000 sf of impervious surface allowed by City of Newport Beach DMAI = 1346 sf x 15/ 2000 = 10 -Use 10 If DMA2= 335 sfx 15/2000 = 2.5 -Use 2.5 lf 2' x 2' x 15' = 60 cfx -4(porosity) = 24 cf Infiltrated to maximum extent possible. 5009 Seashore Dr WQMP Section IV Page 14 PA2019-264 TECHNICAL GUIDANCE DOCUMENT Table 2.7: Infiltration BMP Feasibility Worksheet Infeasibility Criteria Yes No Would Infiltration BMPs pose significant risk for 1 groundwater related concerns? Refer to Appendix VIII N (Worksheet I) for guidance on groundwater-related infiltration feasibility criteria. Provide basis: Summarize findings of studies provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/data source applicability. 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 N • 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: Geotech engineer to review and approve of infiltration. Summarize findings of studies provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/data source applicability. 3 Would infiltration of the DCV from drainage area violate N downstream water rights? Provide basis: Summarize findings of studies provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/data source applicability. 2-34 May19,2011 PA2019-264 TECHNICAL GUIDANCE DOCUMENT Table 2.7: Infiltration BMP Feasibility Worksheet (continued) Partial Infeasibility Criteria Yes No Is proposed infiltration facility located on HSG D soils or 4 the site geotechnical investigation identifies presence of N soil characteristics which support categorization as D soils? Provide basis: Summarize findings of studies provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/data source applicability. Is measured infiltration rate below proposed facility 5 less than 0.3 inches per hour? This calculation shall be N based on the methods described in Ai;rnendix VII. Provide basis: Summarize findings of studies provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/data source applicability. Would reduction of over predeveloped conditions cause impairments to downstream beneficial uses, 6 such as change of seasonality of ephemeral washes N 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: Summarize findings of studies provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/data source applicability. Would an increase in infiltration over predeveloped conditions cause impairments to downstream 7 beneficial uses, such as change of seasonality of N ephemeral 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: Summarize findings of studies provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/data source applicability. 2-35 May 19,2011 PA2019-264 TECHNICAL GUIDANCE DOCUMENT 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 l&I to the sanitary sewer that cannot be sufficiently mitigated? (See Appendix XVII) 8 Provide narrative discussion and supporting evidence: N Summarize findings of studies provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/data source applicability. If any answer from row 1-3 is yes: infiltration of any volume is not feasible within the OMA or equivalent. 9 Provide basis: Summarize findings of infeasibility screening If any answer from row 4-7 is yes, infiltration is permissible but is not presumed to be feasible for the entire DCV. Criteria for designing biotreatment BMPs to achieve the maximum feasible infiltration and ET shall 10 apply. Provide basis: Summarize findings of infeasibility screening If all answers to rows 1 through 11 are no, infiltration of the 11 full DCV is potentially feasible, BMPs must be designed to infiltrate the full DCV to the maximum extent practicable. Harvest and Use Infeasibility Harvest and use infeasibility criteria include: • If inadequate demand exists for the use of the harvested rainwater. See Appendix X for guidance on determining harvested water demand and applicable feasibility thresholds. • If the use of harvested water for the type of demand on the project violates codes or ordinances most applicable to stormwater harvesting in effect at the time of project application and a waiver of these codes and/ or ordinances cannot be obtained. It is noted that codes and ordinances most applicable to stormwater harvesting may change 2-36 Mayl9,2011 PA2019-264 Water Quality Management Plan (WQMP} IV.3.3 Evapotranspiration, Rainwater Harvesting BMPs If the full Design Storm Capture Volume cannot be met with infiltration BMPs, describe any evapotranspiration, rainwater harvesting BMPs. <Delete or leave blank if not used> Name Included? All HSCs; See Section IV.3.1 □ Surface-based infiltration BMPs □ Biotreahnent BMPs □ Above-ground cisterns and basins □ Underground detention □ Other: □ Other: □ Other: □ Show calculations below to demonstrate if the LID Design Strom Capture Volume can be met with evapotranspiration, rainwater harvesting BMPs in combination with infiltration BMPs. If not document how much can be met with either infiltration BMPs, evapotranspiration, rainwater harvesting BMPs, or a combination, and document why it is not feasible to meet the full volume with either of these BMPs categories. Project does not meet feasibility requirement for rainwater harvesting. See Worksheet J. 5009 Seashore Dr WQMP Section IV Page 15 PA2019-264 TECHNICAL GUIDANCE DOCUMENT APPENDICES Table X.8: Minimum Irrigated Area for Potential Partial Capture Feasibility General Landscape Type Conservation Design: Kt = 0.35 Active Turf Areas: Kt= 0.7 Closest ET Station Irvine Santa Ana La~una Irvine Santa Ana La~una Design Capture Storm Depth, inches 0.60 0.66 0.68 0.72 0.33 0.34 0.36 0.65 0.72 0.73 0.78 0.36 0.37 0.39 0.70 0.77 0.79 0.84 0.39 0.39 0.42 0.75 0.83 0.84 0.90 0.41 0.42 0.45 0.80 0.88 0.90 0.96 0.44 0.45 0.48 0.85 0.93 0.95 1.02 0.47 0.48 0.51 0.90 0.99 1.01 1.08 0.49 0.51 0.54 0.95 1.04 1.07 1.14 0.52 0.53 0.57 1.00 1.10 1.12 1.20 0.55 0.56 0.60 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 3 4 5 6 7 8 9 Toilet and urinal flushing Landscape irrigation Other: What is the design capture storm depth? (Figure 111.1) What is the project size? What is the acreage of impervious area? For projects with both toilet flushing and indoor demand What is the minimum use required for partial capture? (Table X.6) What is the project estimated minimum wet season total daily use? 10 Is partial capture potentially feasible? (Line 9 > Line 8?) 11 What is the minimum TUTIA for partial capture? (Table X.7) 12 What is the project estimated TUTIA? X-13 □ IX □ d 0.70 inches A 0.039 ac IA 0.039 ac gpd gpd May19,2011 PA2019-264 TECHNICAL GUIDANCE DOCUMENT APPENDICES Worksheet J: Summary of Harvested Water Demand and Feasibility 14 What is the minimum irrigation area required based on 0.0327 ac conservation landscape design? ( Table X.8) 15 What is the proposed project irrigated area? (multiply ac conservation landscaping by 1; multiply active turf by 2) 0.000 16 Is partial capture potentially feasible? (Line 15 > Line 14 ?) NO Provide supporting assumptions and citations for controlling demand calculation: X-14 May 19,2011 PA2019-264 Water Quality Management Plan (WQMP) IV.3.4 Biotreatment BMPs If the full Design Storm Capture Volume cannot be met with infiltration BMPs, and/ or evapotranspiration and rainwater harvesting BMPs, describe biotreatment BMPs. Include sections for selection, suitability, sizing, and infeasibility, as applicable. <Delete or leave blank if not used> Name Included? Bioretention with underdrains □ Stormwater planter boxes with underdrains □ Rain gardens with underdrains □ Constructed wetlands □ Vegetated swales □ Vegetated filter strips □ Proprietary vegetated biotreatrnent systems □ Wet extended detention basin □ Dry extended detention basins □ Other: □ Other: □ Show calculations below to demonstrate if the LID Design Strom Capture Volume can be met with infiltration, evapotranspiration, rainwater harvesting and/ or biotreatment BMPs. If not document how much can be met with either infiltration BMPs, evapotranspiration, rainwater harvesting BMPs, or a combination, and document why it is not feasible to meet the full volume with either of these BMPs categories. 5009 Seashore Dr WQMP Section IV Page 16 PA2019-264 Water Quality Management Plan (WQMP} IV.3.5 Hydromodification Control BMPs Describe hydromodification control BMPs. See Section 5 TGD. Include sections for selection, suitability, sizing, and infeasibility, as applicable. Detail compliance with Prior Conditions of Approval. <Delete or leave blank if not used> 5009 Seashore Dr WQMP Hydromodification Control BMPs BMP Name BMP Description Section IV Page 17 PA2019-264 Water Quality Management Plan (WQMP) IV.3.7 Treatment Control BMPs Treatment control BMPs can only be considered if the project conformance analysis indicates that it is not feasible to retain the full design capture volume with LID BMPs. Describe treatment control BMPs including sections for selection, sizing, and infeasibility, as applicable. <Delete or leave blank if not used> 5009 Seashore Dr WQMP BMP Name Treatment Control BMPs BMP Description Section IV Page 18 PA2019-264 Water Quality Management Plan (WQMP) IV.3.8 Non-structural Source Control BMPs Fill out non-structural source control check box forms or provide a brief narrative explaining if non- structural source controls were not used. Non-Structura I Source Control Identifier Name Nl Education for Property Owners, Tenants and Occupants --------------·-------------------------------------N2 Activity Restrictions -------------------------------------------------- N3 Common Area Landscape Management ·-------------·-------------------------------------N4 BMP Maintenance --------------------------------------------------· NS Title 22 CCR Compliance (How development will comply) ·--------------------------------------------------N6 Local Industrial Permit Compliance --------------------------------------------------· N7 Spill Contingency Plan -------------------------------------------------- NS Underground Storage Tank Compliance -------------------------------------------------- N9 Hazardous Materials Disclosure Compliance ·-------------·-------------------------------------NlO Uniform Fire Code Implementation --------------------------------------------------· Nll Common Area Litter Control --------------------------------------------------N12 Employee Training -------------------------------------------------N13 Housekeeping of Loading Docks --------------------------------------------------N14 Common Area Catch Basin Inspection ·-------------------------------------------------- NlS Street Sweeping Private Streets and Parking Lots --------------------------------------------------N16 Retail Gasoline Outlets 5009 Seashore Dr WQMP Check One Not Included Applicable [8J □ ·----------- _____ [8] _____ □ ------------------------□ [8J ____ [8] ____ -----□----- -----------· ·-------------· □ [8J ----□---- _____ [8] _____ □ .. " [8J ,. ------------------------□ [8J ·------------------------□ [8J " □ -----□----- ---------" [8J ,. □ ----□---------[8]----- " □ . " [8J .. ----□---- _____ [8] _____ ·------------------------□ ~ ----□---- _____ [8] _____ BMPs If not applicable, state brief reason ------------------------------N/ A-Single Family Residence ------------------------------ N/ A-Single Family Residence ------------------------------ ·------------------------------- N/ A-Single Family Residence ------------------------------N/ A-Single Family Residence -------------------------------N/ A-Single Family Residence ------------------------------ N/ A-No Underground tanks ------------------------------- N/ A-Single Family Residence ------------------------------N/ A-Single Family Residence -------------------------------N/ A-Single Family Residence ------------------------------N/ A-Single Family Residence -------------------------------N/ A-Single Family Residence ------------------------------N/ A-Single Family Residence ------------------------------ N/ A-Single Family Residence ------------------------------N/ A-Single Family Residence Section IV Page 19 PA2019-264 Water Quality Management Plan (WQMP} IV.3.9 Structural Source Control BMPs Fill out structural source control check box forms or provide a brief narrative explaining if Structural source controls were not used. Structural Source Control BMPs Identifier Name Sl Provide storm drain system stenciling and signage Design and construct outdoor material S2 storage areas to reduce pollution introduction Design and construct trash and waste S3 storage areas to reduce pollution introduction Use efficient irrigation systems & S4 landscape design, water conservation, smart controllers, and source control S5 Protect slopes and channels and provide energy dissipation Incorporate requirements applicable to individual priority project categories (from SDRWQCB NPDES Permit) S6 Dock areas S7 Maintenance bays S8 Vehicle wash areas S9 Outdoor processing areas SlO Equipment wash areas Sll Fueling areas S12 Hillside landscaping S13 Wash water control for food preparation areas S14 Community car wash racks 5009 Seashore Dr WQMP Check One Not Included Applicable □ [SI □ [SI □ [SI [SI □ [SI □ □ [SI □ [SI □ [SI □ [SI □ [SI □ [SI □ [SI □ □ □ [SI □ [SI If not applicable, state brief reason Project is Single Family Residence Project is Single Family Residence Project is Single Family Residence Santa Ana Region Project is Single Family Residence Project is Single Family Residence Project is Single Family Residence Project is Single Family Residence Project is Single Family Residence Project is Single Family Residence Project is Single Family Residence Project is Single Family Residence Section IV Page 20 PA2019-264 Water Quality Management Plan (WQMP} Section V Inspection/Maintenance Responsibility for BMPs Fill out information in table below. Prepare and attach an Operation and Maintenance Plan. Identify the mechanism through which BMPs will be maintained. Inspection and maintenance records must be kept for a minimum of five years for inspection by the regulatory agencies. Refer to Section 7.II 4.0 in the Model WQMP. ,, BMP Infiltration Trench 5009 Seashore Dr WQMP ,' ', BMP Inspection/Maintenance · Responsible Insp~ction/ Maintenance Party(s) Activities Required Inspect and clean as necessary to ensure flow Home Owner and drainage. Run auger through as needed. Minimum Frequency of Activities Monthly during non-rainy season. Weekly during rainy season and after a storm event. Section V Page 21 PA2019-264 Water Quality Management Plan (WQMP) Section VI Site Plan and Drainage Plan VI.1 SITE PLAN AND DRAINAGE PLAN Include a site plan and drainage plan sheet set containing the following minimum information: • Project location • Site boundary • Land uses and land covers, as applicable • Suitability/ feasibility constraints • Structural BMP locations • Drainage delineations and flow information • Drainage connections • BMP details VI.2 ELECTRONIC DATA SUBMITTAL <optional -delete if not used> The minimum requirement is to provide submittal of PDF exhibits in addition to hard copies. Format must not require specialized software to open. If the local jurisdiction requires specialized electronic document formats (CAD, GIS) to be submitted, this section will be used to describe the contents (e.g., layering, nomenclature, georeferencing, etc.) of these documents so that they may be interpreted efficiently and accurately. 5009 Seashore Dr WQMP Section VI Page 22 PA2019-264 Water Quality Management Plan (WQMP) Section VII Educational Materials Refer to the Orange County Storm water 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 Materials Residential Material (http://www.ocwatersheds.com) The Ocean Begins at Your Front Door Tips for Car Wash Fund-raisers Tips for the Home Mechanic Homeowners Guide for Sustainable Water Use Household Tips Proper Disposal of Household Hazardous Waste Recycle at Your Local Used Oil Collection Center (North County) Recycle at Your Local Used Oil Collection Center (Central County) Recycle at Your Local Used Oil Collection Center (South County) Tips for Maintaining a Septic Tank System Responsible Pest Control Sewer Spill Tips for the Home Improvement Projects Tips for Horse Care Tips for Landscaping and Gardening Tips for Pet Care Tips for Pool Maintenance Tips for Residential Pool, Landscape and Hardscape Drains Tips for Projects Using Paint 5009 Seashore Dr WQMP Check If Business Material Applicable (http://www.ocwatersheds.com) ~ Tips for the Automotive Industry □ Tips for Using Concrete and Mortar □ Tips for the Food Service Industry □ Proper Maintenance Practices for Your Business ~ Other Material ~ □ □ □ □ ~ □ □ □ ~ □ ~ ~ □ Check If Applicable □ □ □ □ Check If Attached □ □ □ □ □ □ □ □ □ □ □ □ □ Section VI Page 23 PA2019-264 ATTACHMENT A WQMP PLOT PLAN PA2019-264 UJ > ii: 0 UJ 0:: 0 I Cl) <( UJ Cl) INF-2 (5 LF 3Y37'20.29"N 117"56'34.08"W IE I; .. '.'.: ----·, :1 HARDSCAPE .. ··• , ..... . ,------7 I I ROOF L ______ .J r -D-:. -, DRAINAGE MANAGEMENT AREA L ___ .J LEGEND 33°36'39.23"N LATITUDE 117°53'16.63-W LONGITUDE S4 0 0 LANDSCAPING USE EFFICENT IRRIGATION SYSTEM AND LANDSCAPING DESIGN PROP DRAIN LINE PROP AREA DRAIN DS • DOWNSPOUT FLOW DIRECTION-GROUND 0 ~ -.._ ____ _ .,,_, , .. , . ---,---~-.,,,,-w_,. C --•••-... -... ~ :.i:===: I ·.-,Jt . I l 111 .• -_,. """1""!"., ,,-. ·. · / ., 1 346 SF f , · --. ·, I I " 11. "·, · IE -' .... ·· -.•~ · .. -.r.11 ·· ·--, DMA-3 I.,: .. --.-.·-... ·._-,•.• .. -.... -~ 117"5634-08 -:./.rjJ I -if 11 ~/ ... -:.•:.·': ·• I I I · ~--:f ., DMA-2 I 11 _J_J "'=="' " Jit:;c.: -.-:11 335SF : • ,l[F ·•c;:t~ 7 £_+_'!f>,·• '""·'' f .,1l~32~:Lcj:_;fa;_J/ . -i± '. .·.-;0 < Scte7 -,_ -INF-2 (2.5 LF 3Y37'20.29"N 117"56'34.08"W VICINITY MAP NlS ~/ 1"=8' WQMP PLOT PLAN 5009 SEASHORE DRIVE NEWPORT BEACH, CA PA2019-264 ATTACHMENT B EDUCATION MATERIALS PA2019-264 For more information, please call the Orange County Stormwater Program at 1-877-89-SPILL (1-877-897-7455) or visit www.ocwatersheds.com To report a spill, call the Orange County 24-Hour Water Pollution Problem Reporting Hotline at 1-877-89-SPILL (l-877-897-7455). For emergencies, dial 911. The tips contained in this brochure provide useful information to help prevent water pollution. If you have other suggestions, please contact your city's stormwater representatives or call the Orange County Stormwater Program. 0 Printed on Recycled Paper i_o-,;..·-~ _--· Jut ,, PA2019-264 Tips for Residential Pool, Landscape and Hardscape Drains Pool Maintenance All pool water discharged to the curb, gutter or permitted pool drain from your property must meet the following water quality criteria: ■ The residual chlorine does not exceed 0.1 mg/L (parts per million). ■ The pH is between 6.5 and 8.5. ■ The water is free of any unusual coloration. ■ There is no discharge of filter media or acid cleaning wastes. Some cities have ordinances that do not allow pool water to be discharged to the storm drain. Check with your city. Landscape and Hardscape Drains The following recommendations will help reduce or prevent pollutants from your landscape and hardscape drains from entering the street, gutter or storm drain. Unlike water that enters the sewer (from sinks and toilets), water that enters a landscape or hardscape drain is not treated before entering our creeks, rivers, bays and ocean. Household Activities ■ ■ ■ ■ Do not rinse spills of materials or chemicals to any drain. Use dry cleanup methods such as applying cat litter or another absorbent material, then sweep it up and dispose of it in the trash. If the material is hazardous, dispose of it at a Household Hazardous Waste Collection Center (HHWCC). For locations, call (714) 834-6752 or visit www.oclandfills.com. Do not hose down your driveways, sidewalks or patios to your landscape or hardscape drain. Sweep up debris and dispose of it in the trash. Always pick up after your pet. Flush waste down the toilet or dispose of it in the trash. ■ Do not store items such as cleaners, batteries, automotive fluids, paint products, TVs, or computer monitors uncovered outdoors. Take them to a HHWCC for disposal. Yard Maintenance ■ ■ Do not overwater. Water by hand or set automated irrigation systems to reflect seasonal water needs. Follow directions on pesticides and fertilizers (measure, do not estimate amounts) and do not use if rain is predicted within 48 hours. ■ Cultivate your garden often to control weeds and reduce the need to use chemicals. Vehicle Maintenance ■ ■ ■ ■ Never pour oil or antifreeze down your landscape or hardscape drain. Recycle these substances at a service station, a waste collection center or used oil recycling center. For locations, contact the Used Oil Program at 1-800- CLEANUP or visit www.CLEANUP.org. Whenever possible, take your vehicle to a commercial car wash. If you do wash your vehicle at home, do not allow the washwater to go down your landscape or hardscape drain. Instead, dispose of it in the sanitary sewer (a sink or toilet) or onto an absorbent surface such as your lawn. Use a spray nozzle that will shut off the water when not in use. PA2019-264 Do your part to prevent water pollution in our creeks, rivers, bays and ocean. Clean beaches and healthy creeks, rivers, bays, and ocean are important to Orange County. However, many common household REMEMBER THE WATER IN YOUR STORM DRAIN IS NOT TREATED BEFORE IT ENTERS OUR WATERWAYS activities can lead to water pollution if you're not careful. Litter, oil, chemicals and other substances that are left on your yard or driveway can be blown or washed into storm drains that flow to the ocean. Over-watering your lawn and washing your car can also flush materials into the storm drains. Unlike water in sanitary sewers (from sinks and toilets), water in storm drains is not treated. You would never pour soap, fertilizers or oil into the ocean, so don't let them enter streets, gutters or storm drains. Follow the easy tips in this brochure to help prevent water pollution. For more information, please call the Orange County Stormwater Program at 1-877-89-SPILL ( 1-877-897-7455) or visit www.ocwatersheds.com To report a spill, call the Orange County 24-Hour Water Pollution Problem Reporting Hotline 1-877-89-SPILL (1-877-897-7455). For emergencies, dial 911. The tips contained in this brochure provide useful information to help prevent water pollution while performing everyday household activities. If you have other suggestions, please contact your city's stormwater representati\'es or call the Orange County Stormwater Program. GENUINE RECYCLED P A P E R m 50%PRE-CONSUMER AND 15%POST-CONSUNER ' RECYCLE USED OIL .. \·i.• n·,.·\.\. . ,w ·on PREVENTION PA2019-264 Household Activities ■ Do not rinse spills with water! Sweep outdoor spills and dispose of in the trash. For wet spills like oil, apply cat litter or another absorbent material, then sweep and bring to a household hazardous waste collection center (HHWCC). ■ Securely cover trash cans. ■ Take household hazardous waste to a house-hold hazardous waste collection center. ■ Store household hazardous waste in closed, labeled containers inside or under a cover. ■ Do not hose down your driveway, sidewalk or patio. Sweep up debris and dispose of in trash. ■ Always pick up after your pet. Flush waste down the toilet or dispose of in the trash. ■ Bathe pets indoors or have them professionally groomed. Household Hazardous Wastes include: A Batteries A Paint thinners, paint strippers and removers A Adhesives A Drain openers A Oven cleaners A Wood and metal cleaners and polishes A Herbicides and pesticides A Fungicides/wood preservatives A Automotive fluids and products A Grease and rust solvents A Thermometers and other products containing mercury A Fluorescent lamps A Cathode ray tubes, e.g. TVs, computer monitors A Pool and spa chemicals Gardening Activities ■ Follow directions on pesticides and fertilizers, (measure, do not estimate amounts) and do not use if rain is predicted within 48 hours. ■ Water your lawn and garden by hand to control the amount of water you use. Set irrigation systems to reflect seasonal water needs. If water flows off your yard and onto your driveway or sidewalk, your system is over-watering. ■ Mulch clippings or leave them on the lawn. If necessary, dispose in a green waste container. ■ Cultivate your garden often to control weeds. Washing and Maintaining Your Car ■ Take your car to a commercial car wash whenever possible. ■ Choose soaps, cleaners, or detergents labeled "non-toxic," "phosphate free" or "biodegradable." Vegetable and citrus-based products are typically safest for the environment, hut even these should not he allowed into the storm drain. ■ Shake floor mats into a trash can or vacuum to clean. ■ Do not use acid-based wheel cleaners and "hose off" engine degreasers at home. They can be used at a commercial facility, which can properly process the washwater. ■ Do not dump washwater onto your driveway, sidewalk, street, gutter or storm drain. Excess washwater should be disposed of in the sanitary sewers (through a sink, or toilet) or onto an absorbent surface like your lawn. ■ Use a nozzle to tum off water when not actively washing down automobile. ■ Monitor vehicles for leaks and place pans under leaks. Keep your car well maintained to stop and prevent leaks. ■ Use cat litter or other absorbents and sweep to remove any materials deposited by vehicles. Contain sweepings and dispose of at a HHWCC. ■ Perform automobile repair and maintenance under a covered area and use drip pans or plastic sheeting to keep spills and waste material from reaching storm drains. ■ Never pour oil or antifreeze in the street, gutter or storm drains. Recycle these substances at a service station, HHWCC, or used oil recycling center. For the nearest Used Oil Collection Center call 1-800-CLEANUP or visit www.ciwmb.ca.gov/UsedOil. For locations and hours of Household Hazardous Waste Collection Centers in Anaheim, Huntington Beach, Imne and San Juan Capistrano, call (714)834-6752 or visit www.oclandfills.com. PA2019-264 For more information, please call the Orange County Stormwater Program at 1-877-89-SPILL (1-877-897-7455) or visit www.ocwatersheds.com To Report Illegal Dumping of Household Hazardous Waste call l-800-69-TOXIC To report a spill, call the Orange County 24-Hour Water Pollution Problem Reporting Hotline 1-877-89-SPILL ( 1-877-897-7 455). For emergencies, dial 911. ' RECYCLE USED OIL 0 our rront uoor PROJECT PoJJut1ot1 PREVENTION PA2019-264 Leftover household products that contain corrosive, toxic, ignitable, or reactive VVHEN POSSIBLE, USE ON-HA7.AIWOUS OR LESS-HAZARDOUS PRODUC1S. ingredients are considered to be "household hazardous waste" or "HHW." HHW can be found throughout your home, including the bathroom, kitchen, laundry room and garage. Disposal of HHW down the drain, on the ground, into storm drains, or in the trash is illegal and unsafe. Proper disposal of HHW is actually easy. Simply drop them off at a Household Hazardous Waste Collection Center (HHWCC) for free disposal and recycling. Many materials including anti-freeze, latex-based paint, motor oil and batteries can be recycled. Some centers have a "Stop & Swap" program that lets you take partially used home, garden, and automobile products free of charge. There are four HHWCCs in Orange County: Anaheim: .................. 1071 N. Blue Gum St Huntington Beach: ......... 17121 Nichols St Irvine: ............................ 6411 Oak Canyon Sanjuan Capistrano: ... 32250 La Pata 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 ■ Drain 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 computers and microwaves ■ Pool & spa chemicals ■ Cleaners ■ Medications ■ Propane (camping & BBQ) ■ Mercury-containing lamps ■ Television & monitors (CRTs, flatscreens) Tips for household hazardous waste ■ Never dispose of HHW in the trash, street, gutter, storm drain or sewer. ■ Keep these materials in closed, labeled containers and store materials indoors or under a cover. ■ When possible, use non-hazardous products. ■ Reuse products whenever possible or share with family and friends. ■ Purchase only as much of a product as you'll need. Empty containers may be disposed of in the trash. ■ HHW can be harmful to humans, pets and the environment. Report emergencies to 911. PA2019-264 For more information, please call University of California Cooperative Extension Master Gardeners at (714) 708-1646 or visit these Web sites: www.uccemg.org W\Vw.ipm. ucdavis.edu For instructions on collecting a specimen sample visit the Orange County Agriculture Commissioner's website at: http:/ /www.ocagcomm.com/ ser _lab.asp To report a spill, call the Orange County 24-Hour Water Pollution Problem Reporting Hotline at 1-877-89-SPILL (l-877-897-7455). For emergencies, dial 911. Infonnation From: Cheryl Wilen, Area IPM Advisor; Darren Haver, -watershed Management Advisor; Mary Louise Flint, 1PM Education and Publication Director; Pamela M. Geisel, Emironmental Horticulture Advisor; Carolyn L. Unruh, University of California Cooperdtive Extension staff writer. Photos courtesy of the UC Statewide 1PM Program and Darren Haver. Funding for thi~ brochure has been provided in full or in part through an agreement with the State \Vat.er Resources Control Board (Sv\'RCB) pursuant to the Costa-Machado Water Act of2000 (Prop. 13). A "' PA2019-264 Key Steps to Follow: Steb 1: Correctly identify the pest (insect, wee<"i, rodent, or disease) and verify that it is actually causing the problem. This is important because beneficial insects are often mistaken for pests and sprayed with pesticides needlessly. Three life stages of the common lady Consult with a beetle, a beneficial insect. C .fi d N eru e ursery Professional at a local nursery or garden center or send a sample of the pest to the Orange County Agricultural Commissioner's Office. Determine if the pest is still present-even though you see damage, the pest may have left. Step 2: Determine how many pests are present and causing damage. Small pest populations may be controlled more safely using non-pesticide techniques. These include removing food sources, washing off leaves with a strong stream of water, blocking entry into the home using caulking and replacing problem plants with ones less susceptible to pests. ~ uc~W:~: """""" ....... Integrated Pest Management (IPM) usually combines several least toxic pest control methods for long-term prevention and management of pest problems without harming you, your family, or the environment. Steb 3: If a pesticide must be used, choose the feast toxic chemical. Obtain information on the least toxic pesticides that are effective at controlling the target pest from the UC Statewide Integrated Pest Management (IPM) Program's Web site at www.ipm.ucdavis.edu. Seek out the assistance of a Certified Nursery Professional at a local nursery or garden center when selecting a pesticide. Purchase the smallest amount of pesticide available. Apply the pesticide to the pest during its most vulnerable life stage. This information can be found on the pesticide label. Step 4: Wear appropriate protective clothing. Follow pesticide labels regarding specific types of protective equipment you should wear. Protective clothing should always be washed separately from other clothing. Steb 5: Continuously monitor external con&tions when applying pesticides such as weather, irrigation, and the presence of children and animals. Never apply pesticides when rain is predicted within the next 48 hours. Also, do not water after applying pesticides unless the directions say it is necessary. Apply pesticides when the air is still; breezy conditions may cause the spray or dust to drift away from your targeted area. In case of an emergency call 911 and/ or the regional poison control number at (714) 634-5988 or (800) 544-4404 (CA only). For general questions you may also visit www.calpoison.org. Step 6: In the event of accidental spills, sweep up or use an absorbent agent to remove any excess pesticides. Avoid the use of water. Be prepared. Have a broom, dust pan, or dry absorbent material, such as cat litter, newspapers or paper towels, ready to assist in cleaning up spills. Contain and clean up the spill right away. Place contaminated materials in a doubled plastic bag. All materials used to clean up the spill should be properly disposed of according to your local Household Hazardous Waste Disposal site. Step 7: Properly store and dispose of unused pesticides. Purchase Ready-To-Use (RTU) products to avoid storing large concentrated quantities of pesticides. Store unused chemicals in a locked cabinet. Unused pesticide chemicals may be disposed of at a Household Hazardous Waste Collection Center. Empty pesticide containers should be triple rinsed prior to disposing of them in the trash. Household Hazardous Waste Collection Center (714) 834-6752 www.oclandfills.com PROIICT PoHuho"' PA2019-264 For more information, please call the Orange County Stormwater Program at 1-877-89-SPILL (1-877-897-7455) or visit www.ocwatersheds.com To report a spill, call the Orange County 24-Hour Water Pollution Problem Reporting Hotline at 1-877-89-SPILL ( 1-877-897-7455). For emergencies, dial 911. The tips contained in this brochure provide useful information to help prevent water pollution while performing home improvement pn~jects. If you haYe other suggestions, please contact your city's stormwater representatives or call the Orange County Stormwater Program. 0 PA2019-264 Tips for Hon1e In1proven1ent Projects Home improvement projects can cause significant damage to the environment. Whether you hire a contractor or work on the house yourself, it is important to follow these simple tips while renovating, remodeling or improving your home: General Construction ■ Schedule projects for dry weather. ■ Keep all construction debris away from the street, gutter and storm drain. ■ Store materials under cover with temporary roofs or plastic sheets to eliminate or reduce the possibility that rainfall, runoff or wind will carry materials from the project site to the street, storm drain or adjacent properties. Building Materials ■ Never hose materials into a street, gutter or storm drain. ■ Exposed piles of construction material should not be stored on the street or sidewalk. ■ Minimize waste by ordering only the amount of materials needed to complete the job. ■ Do not mix more fresh concrete than is needed for each project. ■ Wash concrete mixers and equipment in a designated washout area where the water can flow into a containment area or onto dirt. ■ Dispose of small amounts of dry excess materials in the trash. Powdery waste, such as dry concrete, must be properly contained within a box or bag prior to disposal. Call your local trash hauler for weight and size limits. Paint ■ Measure the room or object to be painted, then buy only the amount needed. ■ Place the lid on firmly and store the paint can upside-down in a dry location away from the elements. ■ Tools such as brushes, buckets and rags should never be washed where excess water can drain into the street, gutter or storm drain. All tools should be rinsed in a sink connected to the sanitary sewer. ■ When disposing of paint, never put wet paint in the trash. ■ Dispose of water-based paint by removing the lid and letting it dry in the can. Large amounts must be taken to a Household Hazardous Waste Collection Center (HHWCC). ■ Oil-based paint is a household hazardous waste. All leftover paint should be taken toaHHWCC. ■ For HHWCC locations and hours, call (714) 834-6752 or visit www.oclandfills.com. Erosion Control ■ Schedule grading and excavation projects for dry weather. ■ When temporarily removing soil, pile it in a contained, covered area where it cannot spill into the street, or obtain the required temporary encroachment or street closure permit and follow the conditions instructed by the permit. ■ When permanently removing large quantities of soil, a disposal location must be found prior to excavation. Numerous businesses are available to handle disposal needs. For disposal options, visit www.ciwmh.ca.gov/SWIS. ■ Prevent erosion by planting fast-growing annual and perennial grasses. They will shield and bind the soil. Recycle ■ Use a construction and demolition recycling company to recycle lumber, paper, cardboard, metals, masonry (bricks, concrete, etc.), carpet, plastic, pipes (plastic, metal and clay), drywall, rocks, dirt and green waste. ■ For a listing of construction and demolition recycling locations in your area, visit www.ciwmb.ca.gov/recycle. Spills ■ Clean up spills immediately by using an absorbent material such as cat litter, then sweep it up and dispose ofit in the trash. ■ Immediately report spills that have entered the street, gutter or storm drain to the County's 24-Hour Water Pollution Problem Reporting Hotline at (714) 567-6363 or visit www.ocwatersheds.com to fill out an incident reporting form. Pao,■c, P0Hut1ot'\ PRIYINTION ....._~ PA2019-264 For more information, please call the Orange County Stormwater Program at 1-877-89-SPILL (1-877-897-7455) or visit www.ocwatersheds.com UCCE Master Gardener Hotline: (714) 708-1646 To report a spill, call the Orange County 24-Hour Water Pollution Problem Reporting Hotline 1-877-89-SPILL ( 1-877-897-7455). For emergencies, dial 911. The tips contained in this brochure provide useful infonnation to help preYent water pollution while landscaping or gardening. If you have other suggestions, please contact your city's storn1w<1ter representatives or call the Orange County St.ormwater Program. 0 .. ~ ~ r ~ ·;t PA2019-264 Never allow gardening products or polluted water to enter the street, gutter or storm drain. General Landscaping Tips ■ Protect stockpiles and materials from wind and rain by storing them under tarps or secured plastic sheeting. ■Prevent erosion of slopes by planting fast-growing, dense ground covering plants. These will shield and bind the soil. ■Plant native vegetation to reduce the amount of water, fertilizers, and pesticide applied to the landscape. ■Never apply pesticides or fertilizers when rain is predicted within the next 48 hours. Garden & Lawn Maintenance ■Do not overwater. Use irrigation practices such as drip irrigation, soaker hoses or micro spray 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 not over-apply pesticides or fertilizers. Apply to spots as needed, rather 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. ■ 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 trash. ■When available, use non-toxic alternatives to traditional pesticides, and use pesticides specifically designed to control the pest you are targeting. For more 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. PA2019-264 For more information, please call the Orange County Stormwater Program at 1-877-89-SPILL (1-877-897-7455) or visit www.ocwatersheds.com To report a spill, call the Orange County 24-Hour Water Pollution Problem Reporting Hotline 1-877-89-SPILL (l-877-897-7455). For emergencies, dial 911. The tips contained in this brochure provide useful information to help prevent water pollution while caring for your pet. If you have other suggestions, please contact your city's stonnwater representatives or call the Orange County Stormwater Program. 0 '\,,," '>#;" ... ,. -:,·· ., .. -~ ~~1 ~~i '_JI.·_,;' .. ~ .. ·-..... ,,~ ... --:,• ' ';:t " ~"' .. , ~.,,.-... ~ -•""-' "-~' ~ "" -.,._ PA2019-264 Never let any pet care products or washwater run off your yard and into the street, gutter or storm drain. Washing Your Pets Even biodegradable soaps and shampoos can be harmful to marine life and the environment. ■If possible, bathe your pets indoors using less-toxic shampoos or have your pet professionally groomed. Follow instructions on the products and clean up spills. ■If you bathe your pet outside, wash it on your lawn or another absorbent/ permeable surface to keep the washwater from running into the street, gutter or storm drain. Flea Control ■ Consider using oral or topical flea control products. ■ If you use flea control products such as shampoos, sprays or collars, make sure to dispose of any unused products at a Household Hazardous Waste Collection Center. For location information, call (714) 834-6752. JVhy You Should Pick Up After Your Pet It's the law! Every city has an ordinance reqmnngyou to pick up after your pet. Besides being a nuisance, pet waste can lead to water pollution, even if you live inland. During rainfall, pet waste left outdoors can wash into storm drains. This waste flows directly into our waterways and the ocean where it can harm human health, marine life and the environment. As it decomposes, pet waste demands a high level of oxygen from water. This decomposition can contribute to killing marine life by reducing the amount of dissolved oxygen available to them. Have fun with your pets, but please be a responsible pet owner by taking care of them and the environment. ■ Take a bag with you on walks to pick up after your pet. ■ Dispose of the waste in the trash or in a toilet. PROJICT PoHuhon PA2019-264 ATTACHMENT C Reference Exhibits of O.C. Technical Guide Document PA2019-264 Susceptibility Potential Areas of Erosion, Habitat, & Physical Structure Susceptibility Channel Type Earth (Unstable) Earth (Stabilized) Stabilized Tidel Influence -<= Mean High Water Line (4.28') Water Body Basin I ____ ; Dam B Lake Reservoir Other Lands -Airport/Military Santa Ana River Watershed 8 South Orange County -_: Feet 4.000 s.ooo 16.000 (!ff?) ~ (f!(6 t,f( ~ ~ Eel~ J £= ~ ~~ (~,) c,;1 ffi ~ ::>, £= F ~ [Q!.: (ljTJJ :es! ©I~ @j)@., ©, E~~ !!el~ Iii:: ~ ((:) W, 191. ~ ~ (giJ ru ~ ,,,;i:~ ~~ ~ ~ ~(Q~ "S) [;&!I g © ~ (.~1 cg m d g@., till! [<!!JJ @; r',;vl~ell!J ~~[= ~, ~~, ro 1§ ~ r~ © ~ci 1 ~I e (.) w CJ ~ 0: 0 "1°1I ~1 ij! ~ g.., j ~ 1 ' ~ JW~ (~I XVl-3d PA2019-264 c'.] City Boundaries Hydrologic Soil Groups A Soils BSoils Source: :g, Soils: Natural Resources Conservation Service (NRCS) Soil Survey• soil_ca678, Orange County & Western Riverside Date of publication: 2006·02·08 @:) ~©"» ,6)@:. :;;Ji =:, ©© /Qs@; D ~ ?r V?i) b:a ~© ~ @~ ;g :> ~ li5l =, =:V ~ ll= ~ (0?) ©~ ~)© MJI= ~~ c3 ~@s '<11 ll= @s ~ ©I Pb ~ 8 w 0 ~ 0 "I "I ~i l!L, , , ,I, I, (Wf ~f DJ XVl-2a PA2019-264 ,J..c:::i~-.......... , ...... ~":,tj--·······-·2.z:::,._···~·"·-· ,~~DlIBJJ~©'TI' u@ esruJIJBu[}{]~IJB IJB~W□~□@[f!] ,) 1.8 3.6 J.,.,,,.-..,.,,.,......._ LEGEND c Orange County Precipitation Stations --24 Hour, 85th Percentile Rainfall (Inches) -------24 Hour, 85th Percentile Rainfall (Inches)-Extrapolated ['.] City Boundaries Rainfall Zones Design Capture Storm Depth (inches) llllJ0.65" ~ 0.7 C.J o.75 0.80 Note: Events defined as 24-hour penods {calendar days) with greater than 0.1 inches of rainfall. For areas outside of available data coverage, professional judgment shall be applied. 11/Jt ™ ~ © N dl di ~ U!b ~ 61 @;; ™ ((.'i) ~~ ~"'11, 5' IQ) C= =' 9 :'E lQ) =" ™ ig©J ~ llliJidld I~~ IQ :z ~ lQ) c5{ ~ {Q] ~ ,,.s '} u ™ &'= <( u ci u UJ Cl I "I "I ii 8 i 0 ! l ! 1 ll (Wf ~f DJ XVl-1 PA2019-264