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HomeMy WebLinkAboutPA2022-0196_20220830_WQMP ReportCounty of Orange/Santa Ana Region Priority Project Water Quality Management Plan (WQMP) Project Name: Rodman Residence 550 S. Bay Front Balboa Island, CA 92662 Lot 7 of Block 15 APN 050-062-14 Prepared for: Mr. Larry Rodman 550 S. Bay Front Balboa Island, CA 92662 (626) 354-9229 Prepared by: RCE Consultants, Inc. 18021 Sky Park Circle, Suite E-2 Irvine, CA 92614 Ali Rezaei 949-466-9394 ali@rce-eng.com Date Prepared: August 30, 2022 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Project Owner's Certification Planning Application No. N/A Grading Permit No. (If applicable) -Tract/Parcel Map and Section 1, Balboa Building Permit No. Lot(s) No. Island, Lot 7 - - Address of Project Site and APN APN 050-062-14 550 S. Bay Front, Balboa Island, California This Water Quality Management Plan (WQMP) has been prepared for Mr. Larry Rodman by RCE Consultants, Inc. The WQMP is intended to comply with the requirements of the County of Orange NPDES Storm.water 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 , including the ongoing operation and maintenance of all best management practices (BMPs), 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: Edward Contreras Title Property Owner Company - Address 550 S. Bay Front, Balboa Island, California Email - Telephone# (626) 354-9229 I understand my responsibility to implement the provisions of this WQMP including the ongoing operation and maintenance of the best management practices (BMPs) described herein. Owner L s1k ~ Date q-~-:2..2-Signature ,,,. . 550 S. Bay Front Owner's Certification North OC Priority WQMP Template December, 2013 Pagei Water Quality Management Plan (WQMP) Rodman Residence Preparer (Engineer): Ali Rezaei Title Consulting Civil Engineer Company RCE Consultants, Inc. Address 18021 Sky Park Circle, Suite E2-lrvine, CA 92614 Email ali@rce-eng.com Telephone # (949) 466-939 J PE Registration# J 41068 I hereby certify that this Water Quality Management Plan is in compliance with, and meets the requirements set forth in, Order No. RB-2009-0030/NPDES No. CAS618030, of the Santa Ana Regional Water Quality Control Board. Preparer Signature Place Stamp Here 550 S. Bay Front Owner's Certification North QC Priority WQMP Template December, 2013 Date 8-22-2022 Page ii Priority Project Water Quality Management Plan (WQMP) Rodman Residence Contents Section I Section II Section Ill Section IV Section V Section VI Section VII Page No. Permit{s) and Water Quality Conditions of Approval or Issuance .......... 1 Project Description ................................................................................. 2 Site Description ...................................................................................... 5 Best Management Practices (BMPs) ....................................................... 8 Inspection/Maintenance Responsibility for BMPs ................................ 29 BMP Exhibit {Site Plan) ......................................................................... 30 Educational Materials ........................................................................... 31 Attachments Attachment A .................................................................................. Educational Materials 550 S. Bay Front Table of Contents North OC Priority WQMP Template December, 2013 Page iii Priority Project Water Quality Management Plan (WQMP) Rodman Residence Section I Permit(s) and Water Qu ality Conditions of Approval or Issuance Project Infomation Permit/ Application No. Grading or Building (If applicable) N/A Permit No. - (If applicable) Address of Project Site ( or Tract Map and Lot 550 S. Bay Front, Balboa Island, California Number if no address) andAPN Water Quality Conditions of Approval or Issuance Water Quality The Project site is in the Newport Coastal Sh·eams Watershed and the Conditions of Approval water quality is currently listed by the State of California (Approved or Issuance applied to this project. 2010 303 (d) listed Water Bodies & Associated POC) as impaired by the (Please list verbatim.) pollutant of indicator Bacteria. Conceptual WQMP Was a Conceptual Water Quality Management Plan No previously approved for this project? Watershed-Based Plan Conditions The Newport Coastal Streams Watershed covers approximately 7.8 Provide applicable square miles, mainly in the unincorporated area between Newport conditions from watershed -Beach and Laguna Beach. There are several receiving water bodies based plans including including Morning Canyon Creek and Bulk Gully Creek in this watershed. However, the Lower Newport Bay in the downstream WIHMPs and TMDLS. receiving water body associated with this project site which is not potentially suseptible to hydromodificat ion impacts. 550 S. Bay Front Section I North OC Priority WQMP Template December, 2013 Page 1 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Section II Project Description II.1 Project Description Description of Proposed Project Development Category j This Project is considered a Priority project due to Impervious surface of (From Model WQMP, j 2500 square feet or more and located within 200 feet or discharging to Table 7.11-2; or -3): ! receiving water within enrironmentally sensitive area . .................................................. , .......................................................................... , ................................................... . Project Area (ft2): .?~i50 j Number of Dwelling Units: Ic;1g j SIC Code: J.:i21 ·:::::·::· . ···················-:.;~~=::;\(;~:;::::: 1: ;,~~;~:\~:=:: ::: Pre-Project Conditions 0 sq ft · I 0% · ] 2552 sq ft 1 100% ·················································· ............................... ,:. ............................ · ................................. .:. ........................... .. Post-Project Conditions 128 sq ft j 5% j 2424 sq ft j 95% .............................................................................................................................................................................. Drainage Patterns/ Connections Narrative Project Description: (Use as much space as necessary.) Currently the site is developed as a single family residence with attached two car garage. The site currently drains partially to the north (existing Alley) and partially to the south (South Bay front) planter and sidewalk. The proposed project consists of demolishing the existing 2-story single family residence and construct a new three-story single family dwelling with attached 2-car garage. The new finished slab elevation is proposed to be at (9.0' elevation), which is elevated approximately 2 feet above the south bay Front sidewalk to the south and existing Alley to the north. 550 S. Bay Front Section II North OC Priority WQMP Template December, 2013 Page 2 Priority Project Water Quality Management Plan (WQMP) Rodman Residence II.2 Potential Stormwater Pollutants Pollutants of Concern Check One for each: Pollutant E=Expected to be of concern Additional Information and Comments N=Not Expected to be of concern Suspended-Solid/ Sediment E[8] NO The receiving water body is Lower Newport Bay, (Not on 2010 303(d) list) Nutrients E[8] NO The receiving water body is Lower Newport Bay, (Not on 2010 303(d) list) Heavy Metals E[8] NO The receiving water body is Lower Newport Bay, (Not on 2010 303(d) list) Pathogens (Bacteria/Virus) E[8] NO The receiving water body is Lower Newport Bay, (Not on 2010 303(d) list) Pesticides E[8] NO The receiving water body is Lower Newport Bay, (On 2010 303(d) list) Oil and Grease E[8] NO The receiving water body is Lower Newport Bay, (Not on 2010 303(d) list) ---- Toxic Organic Compounds E[8] NO The receiving water body is Lower Newport Bay, (On 2010 303(d) list) --------·"·•· Trash and Debris E[8] NO The receiving water body is Lower Newport Bay, (Not on 2010 303(d) list) 550 S. Bay Front Section 11 North OC Priority WQMP Template December, 2013 Page 3 Priority Project Water Quality Management Plan (WQMP) Rodman Residence II.3 Hydrologic Conditions of Concern Determine if streams located downstream from the project area are potentially susceptible to hydromodification impacts. ~ No -Show map D Yes -Describe applicable hydrologic conditions of concern below. Water flow from the project site will be directed to the series of area drains located within the paved and/or planter areas discharging to underground piping systems. Piping systems are ultimately draining to trench drain equiped with underdrain for on-site infiltration. There is no direct water flow discharge into the public right of way surface or storm drain (if any) and therefore, no stream located downstream from the project site are susceptible to hydromodification impact. II.4 Post Development Drainage Characteristics Describe post development drainage characteristics. The Runoff from the east and west side yards are split in two segments by creating high points that direct the water flow southerly (front) toward the south Bay Front and northerly (rear) toward the garage and the Alley. Runoff from the front area is directed to area drains within the planter and the underground piping systems located along the east and west side yards. which ultimately drains to the north trench drain for infiltration. The garage is located in the rear portion of the property with access from adjacent Alley on the north side. Runoff from this area is captured by area drains and is directed to underground piping and to the linear trench drain located along the north property line. The roof downspouts are also connected to the same underground piping system serving the on-site drainage systems. II.5 Property Ownership/Management Describe property ownership/ management. Mr. Larry Rodman is the current property owner of this new project development and will be the responsible party for monitoring, management and the maintenance of all on-site stormwater facilities during his ownership. 550 S. Bay Front Section II North OC Priority WQMP Template December, 2013 Page 4 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Section Ill Site Description III.1 Physical Setting Fill out table with relevant information. Name of Planned Community /Planning - Area (if applicable) 550 S. Bay Front Location/ Address - Balboa Island, California 92662 General Plan Land Use RS-D Designation Zoning R-Bl Acreage of Project Site 0.06 Acre Predominant Soil Type Hydrologic Soil Group (HSG) D 550 S. Bay Front Section Ill North OC Priority WQMP Template December, 2013 •,-----•--,--------·--------- Page 5 Priority Project Water Quality Management Plan (WQMP) Rodman Residence III.2 Site Characteristics Fill out table with relevant information and include information regarding BMP sizing, suitability, and feasibility, as applicable. Site Characteristics ·-·-·-·--·--------"--------· -·-·---------- Precipitation Zone Design Capture Storm Depth (Inches): 0.70 Topography The existing site is fairly on level pad ans is approximately 0.5 foot above the adjacent Alley or south Bay Front sidewalk. The entire site runoff is drained in to series of area drains on east, west and south that are located within the hardscape and/ or Drainage landscape area. Captured water is collected by underground piping Patterns/ Connections on the east and west side of the property and flowing north toward the alley and discharging to linear trench drain and underdrain located adjacent to the alley along the north side of the property. Per project soils report No. 1H383.1 prepared by EGA Cosultant LLC, Fill (Afr Fill sands were encountered in each of the boring to a depth of approximately 2 feet below the existing grade. The fill soils consist generally of yellowish brown, moist to very moist, loose to medium dense, fine-grained silty sand with terace roots and shell fragments. The expansion potential of the fill soils was judged to be "non- expansive" when exposed to an increase in moisture content. Hydraulic-Native Sands (Qm). Terrace De11osits (Qtm) and Bedrock (Tm): Soil Type, Geology, and The underlying fill materials are hydraulic and native sands as Infiltration Properties encountered in each of the test borings (B-1, B-2 & CPT-1). The native sands consist generally of light to olive gray, moist to saturated, medium dense, non-cemented, fine-to medium-grained, sand and silty sand with terace shell fragments. The native sands are underlain by marine sands (Qm) and terrace deposite (Qtm) deposits, which are underlain by Monterey Formation (Tm) bedrock consisting of medium dense to very dense, fine to medium grained, moderately to well-cemented sand and siltstone to maximum depths explored (50.5 feet below grade). ---~-"""" 550 S. Bay Front Section Ill North OC Priority WQMP Template December, 2013 Page 6 Priority Project Water Quality Management Plan (WQMP) Rodman Residence _,, ____ . .,._, ___ ,. __ Hydrogeologic The subsurface exploration consisted of excavation of two exploratory (Groundwater) borings to a maximum of 10 feet below grade in which the ground Conditions water was encountered at the depth of 7 feet below existing ground. Geotechnical Conditions Based upon soil report by EGA Consultant, the site is underlained by (relevant to infiltration) sand and fine grained sand and condition on project site are suitable and favorable for infiltration of surface water runoff. Off-Site Drainage There are no existing off-site drainage system. Utility and Infrastructure Existing sewer and water lines are located within the Alley located on Information the north side of the property. 111,3 Watershed Description Fill out table with relevant information and include information regarding BMP sizing, suitability, and feasibility, as applicable. Receiving Waters Lower Newport Bay 303( d) Listed Impairments Bacteria, Pesticides, PCBs, Chlordane, DDT, Copper, Sediments and Nutrients ___ ,.,. __ , ..... Applicable TMDLs Sediments, Fecal coliform, Selenium, Copper Pollutants of Concern for Pathogens, metal copper, Oil & Grease the Project Environmentally Sensitive and Special Biological The projedt is located within the Environmentally Sensitive Area. Significant Areas 550 S. Bay Front Section Ill North OC Priority WQMP Template December, 2013 Page 7 CPT-1 ... -- w u z UJ 0 vi -- w a: 1-z ~ LIi i ~ "°1 <.!) z [;; x w S. BAY FRONT ALLEY 30' ;,t B-1 I EXISTING RESIDENCE 30' B-2 r./", S. BAY FRONT ALLEY _, a. EGA PLOT PLAN Consultants 550 5. BAY FRONT w u z w 0 vi UJ a: 1-z w u <( a <( \!) 2 ~ c:i :, :, ·u " _, .e " 0 .0 ~i "' ,, C 0 C ~ > -a .0 " a !'} 0 o. LEGEND " ============-:, GEOTECHNICAL BORINGS BY EGA CONSULTANTS CONE PENETRATION TEST BY KEHOE TESTING AND ENGINEERING Project No: IH383.1 Date: MAY 2022 rng111ccri11g gcotcdrnical application, NEWPORT BEACH, CALIFORNIA Figure No: 2 Qop . . ·-.~--~ I-' · ·0 .-Eolian deposits (late Holocene)-Active or recently active '. -~-"-~~J sand dune deposits; unconsolidated. Om Marine deposits (late Holocene)-Active or recently active ~--~ beach deposits; sand, unconsolidated. Oas E5,tuatine deposits (late Holocene)-Sand, silt, and clay; ~---unconsolidated, contains variable amounts of organic matter. r[-·-0-op-~I Old parallc deposits, Unit 4 (late to middle Pleistocene)- -•---,.--4 .. J Silt, sand and cobbles resting on 34-37 m Stuart Mesa terrace. Age about 200,000-300,000 years, f\_·_:_A~'§~;\:~ Old paralic deposits, Unit 3 (late to middle Pleistocene)-- 1::,f~~-:s<( Silt, sand and cobbles resting on 45-46 m Guy Fleming terrace. Age about 320,000-340,000 years. ! . Oom_f4 I Old parallc deposits, Unit 2 (late to middle Plelstocene)- l .. ~.~~~. Silt, sand and cobbles resting on 55 m Parry Grove terrace. Age about 413,000years. Source: p3 Old paralic deposits, Unit 1 (late to middle Plelstocene)-Silt, sand and cobbles resting on 61-63 m Golf Course terrace. Age about 450,000 years. ;· .. Qop f Old para lie deposits, Units 3-6, undivided (late to l, .... ---·~-.J middle Plelstocene)-Silt, sand and cobbles on 45-SS m ~---terraces. Qopf ! Old paralic deposits (late to middle Pleistocene) overlain · '-~-:-~ ·--1 by alluvial fan deposits-Old pardlic deposits capped by sandy alluvlal-fan deposits ~-, Capistrano Formation (early Pliocene and Mlocene)-~fi ... " -la/J Marine sandstone. Siltstone fades-Siltstone and mudstone; white to pale gray, massive to crudely bedded, friable. f) __ :_i.<_ff''.:;_/~;:_-?_'I Monterey for_matlon (Mlocene)-Marine siltstone and L, J/;:m ~ >'·, silndstone; siltceous and diatomac.eous. Morton, D.M., and Miller, F.K. Preliminary Geologic rnap of the San Bernardino and Santa Ana 30' x 60' quadrangles, California. U.S. Geological Surve, Published 200 . 1·100 OO0sca! EGA Consultants engineering gcotcchnical npplicntions GEOLOGIC MAP 550 $. BAY FRONT NEWPORT BEACH, CALIFORNIA Project No: IH383.l Date: MAY 2022 Figure No: 3 l:""r-::ir ···-~ R ---~ ·-=.--:;:,----.. -r:-~----··-- • ,."' ~ " lFllJJ~(;:J]OO !IB~..::O@irc- ---::-. . LEGEND c Orange County Precipi!ation Stations --2, Hour. 851h Percer& Rainfall (lncht,S) -2◄ Hour. 85111 Percenlile Raw,fall (lnd>t,S) • Ex!rapolalcd ~ City Boundaries RainfallZon<tS Oe-s;gn <:aptutt Storm Oeptt, (inchf:S) ~0.65" ~0.7 ~0.75 :-7 0.80 :--~.] 0.85 ~0.90 i!:,110.95 g 1.oo • ,.10- Nc,c!c:. E'f'Cr1taddincd as~ pc,~,atcn;brgyaJw:1'1VT:.-.cr ~Ol~of~ F« ... Ot.tWldeof --~ dx;J~. ~JUdomc'nt ..... bcai,plod. I ; ' i I ~ n i ' .. •J ., t ,_ i J ~ --=~=r:.:rL..: ---, y ---~~ r-· """' ~= --.. fn) -,-; 0s- ======..: . , ~ ... .,,..: ,f-0 ; 3,. ~ ........ :· .. ,· . .,. Sou<oo S-. _R...,..x"""C°""'"""""SeNic, INllCS) s.., s..r.e,, .... _c:a6?8. °'"""'l"eo..r.-1 & --~ Dote .. -2006-o2-0S ~ I ri:tp.~ .... -.n~.~~.;;~;,,:::..4-krM-Fir~.Nrr ~ ' ~ -.. ·.,;.,--·-:: ... ,; :.-\ ·. - i I ,.I I ! i 1------... --,; ._, f 0 1 ij(i.~ :' ... ~ ,.. . -:/" ;~~'1 ., . l i I i I I I I I Sj ~f ~I 0 :\ ·, ~ _ _.,1-,_,,,-~---i i ;.c., XVl-2a -....-----..---lJ - + ,-~ -~ ~ . I -1 i ! -< V 0 V l a S! g ,, i Susceptibility ~#;. Potential Areas of Etosion. Habitat. & Physical Structure Susceplibility Channel type Ea1h{Unslable) Earth (Stabilized) Slabiized Ttdel Influence -<= Mean High Waler Line (4.28') water Body CJ Basin □Dam l2\iiiiil l.al<e O R--.oir Other Lands -AirpoM.1ilitary I -~_-::,·. "1". i -,, )'"~,;-· f •. ,__ ~11,{Jfi'llOOO&OOW ~ •·· .Y:""-f•-,. ~ . :;·: ®WIM@:©ii' 'if@·~~§OO OO~©OOJ, i~;:i·:;~i~, ·-a ,.,,,,,,., ~ ~~~ ~ ::· i::~:: !f:t~}~-:~·-;~:f;i~~~~-~~~;.~-.~~-r;~~-/ \,;J/t~q~:~-~~~~·:~~r;,;;#'. ~. -~ \~t ~-·~ ; -~ c...,y 4.@ a.000 ""' 16.000 XVl-3d Priority Project Water Quality Management Plan (WQMP) Rodman Residence Section IV Best Management Practices {BMPs) IV. 1 Project Performance Criteria (NOC Permit Area only) Is there an approved WIHMP or equivalent for the project area that includes more stringent LID feasibility YES □ NO~ criteria or if there are opportunities identified for implementing LID on regional or sub-regional basis? If yes, describe WIHMP feasibility criteria or regional/ sub-regional LID opportunities. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 8 Priority Project Water Quality Management Plan (WQMP) Rodman Residence If HCOC exists, list applicable hydromodification control performance criteria (Section 7.II-2.4.2.2 in MWQMP) Project Performance Criteria V=CxDxA: Where A=2552 sf. & D=2.05" of 2-yr, 24-hr precipitation depth Cpre=0.75x1 +0.15=1.02; Vpre=(l.02x2.05x2552)/12 = 444 cf. Cpost=o.75x0.95+0.15=0.86; Vpost=(0.86x2.05x2552)/12 = 375 cf. Vpost/Vpre = 375/ 444 = 0.85 Since HCOC does not exist, hydromodification will not be considered ,---------+----------------------------- List applicable LID performance criteria (Section 7.II-2.4.3 from MWQMP) List applicable treatment control BMP performance criteria (Section 7.II-3.2.2 from MWQMP) The project is required to consider infiltration, harvest & reuse, evapotranspiration and/ or biofiltration. The project site is feasible for infiltration per the nature of undrlying soil. However, The site does not allow for adequate area for harvest and reuse and therefore, the infiltration trench is proposed to mitigate the WQMP requirements. Vdelta = Vpost-Vpre = 375-444 = <-69> cf. DCV=(0.86xo.7x2552)/12 = 128 cf (volume is required for BMP treatment) 11--------+----------------------------------111 Volume based BMP = 128 cf., Drainage Management Area (DMA) divided equally into: Calculate LID design storm capture volume for Project. (DMA1) east sub-area= 1276 sf. -> DCV1 = (0.86x0.7x1276)/12 = 64 cf. (DMA2) west sub-area= 1276 sf.-> DCV2 = (0.86x0.7x1276)/12 = 64 cf. 550 S. Bay Front Section IV North QC Priority WQMP Template December, 2013 Page 9 Priority Project Water Quality Management Plan (WQMP) Rodman Residence IV.2. Site Design and Drainage The runoff of DMAl, which include rooftops, hardscape and landscape area will be collected by the multiple area drains via underground pipe, conveying runoff northerly to the linear trench drain for infiltration. The runoff of DMA2, which include rooftops, hardscape and landscape area will be collected by the multiple area drains via underground pipe, conveying runoff northerly to the linear trench drain for infiltration. Following is the DMAs and associated DCV to be mitigated by the proposed BMPs. Description of Drainage Area Design Capture Proposed BMPs Discharge Management Area (DMA) (SF.) Volume (DCV) Locations Rooftop, hardscape & 1276 64d. Infiltration trench On-site land scape -DMAl with underdrain Rooftop, hardscape & 1276 64 cf. Infiltration trench On-site land scape -DMA2 with underdrain DCVl + DCV2 = 128 CF GIS BMP COORDINATE: 33.6084588, -117.8958188 Note: DMAl & DMA2 are identical in capturing water runoff, drainage system and treatment. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 10 Priority Project Water Quality Management Plan (WQMP) Rodman Residence 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. IV.3.1 Hydrologic Source Controls (HSCs) 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. Name Included? Localized on-lot infiltration [gJ 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: Filter Insert Inlets □ Other: □ Other: □ Other: □ Other: □ Other: □ Other: □ Other: □ 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 11 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Worksheet 2: Summary of Groundwater-related Feasibility Criteria 1 Is project large or small? (as defined by Table C-2) Large ~malll circle one 2 What is the tributary area to the BMP? A 0.06 acres 3 What type of BMP is proposed? 4 What is the infiltrating surface area of the proposed BMP? AsMP 2552 sq-ft What land use activities are present in the tributary area (list all) 5 6 What land use-based risk category is applicable? Low M H If Mor H, what pretreatment and source isolation BMPs have been considered and are proposed (describe all): 7 What minimum separation to mounded seasonally high ~ 8 groundwater applies to the proposed BMP? 10 ft See Appendix C.2 (circle one) Provide rationale for selection of applicable minimum separation to seasonally high mounded groundwater: 9 Per guideline of section Vlll.2 for residential application for proposed bioretention and infiltration 10 What is the separation from the infiltrating surface to seasonally high 6 ft groundwater? 11 What is the separation from the infiltrating surface to mounded seasonally 6 ft high groundwater? Describe assumptions and methods used for mounding analysis: Per prescriptive section Vlll.2 of TGD 12 550 S. Bay Front Section IV North OC Priority WQMP Templat e December, 2013 Page 12 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Worksheet 2: Summary of Groundwater-related Feasibility Criteria 13 Is the site within a plume protection boundary? y ffil NIA 14 Is the site within a selenium source area or other natural plume y ffil NIA area? 15 Is the site within 250 feet of a contaminated site? y ffil NIA If site-specific study has been prepared, provide citation and briefly summarize relevant findings: 16 17 Is the site within 100 feet of a water supply well, spring, or septic y ffil NIA system? 18 Is infiltration feasible on the site relative to groundwater-related [Y] N criteria? Provide rationale for feasibility determination: Ground water table is at 7 ft. below existing grade and the site is being raised by approximately 1 ft. for overall water depth of 8 ft. which is equal or grater than required 5.0' separation per section Vlll.2 Note: if a single criterion or group of criteria would render infiltration infeasible, it is not necessary to evaluate every question in this worksheet. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 13 Priority Project Water Quality Management Plan (WQMP) Rodman Residence 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 VII No (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 from 2 slopes steeper than 15 percent No 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: Ground water is indicated to be 5.5 ft. below existing grade. Site is raised by approximately 1 ft. 3 Would infiltration of the DCV from drainage area violate No 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. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 14 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Table 2.7: Infiltration BMP Feasibility Worksheet (continued) Partial Infeasibility Criteria Yes No Is proposed infiltration facility located on HSG D soils or the 4 site geotechnical investigation identifies presence of soil Yes 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 less 5 than 0.3 inches per hour? This calculation shall be based No on the methods described in Appendix 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, such as 6 change of seasonality of ephemeral washes or increased No 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 beneficial 7 uses, such as change of seasonality of ephemeral washes No 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. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 15 Priority Project Water Quality Management Plan (WQMP) Rodman Residence 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: No 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: No Summarize findings of infeasibility screening 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 achieve the maximum feasible infiltration and ET shall apply. 10 Provide basis: Infiltration is feasible due to nature of soil No material Summarize findings of infeasibility screening If all answers to rows 1 through 10 are no, infiltration of the full 11 DCV is potentially feasible, BMPs must be designed to No infiltrate the full DCV to the maximum extent practicable. 550 5. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 16 Priority Project Water Quality Management Plan (WQMP) Rodman Residence IV.3.2 Infiltration BMPs Identify infiltration BMPs to be used in project. If design volume cannot be met, state why. Name Included? Bioretention without underdrains □ Rain gardens □ Porous landscaping □ Infiltration planters □ Retention swales □ Infiltration trenches [8:J Infiltration basins [8:J Drywells □ Subsurface infiltration galleries □ French drains [8:J Permeable asphalt □ Permeable concrete □ Permeable concrete pavers □ Other: Bioretention with underdrain □ Other: □ Required infiltration BMP has been met. See Following calculations 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 17 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Worksheet C: Capture Efficiency Method for Volume-Based, Constant Drawdown BMPs • 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= 0.7 inches 2 Enter calculated drawdown time of the proposed BMP based T= 4.8 hours on equation provided in applicable BMP Fact Sheet, T (hours) 3 Using Figure 111.2, determine the "fraction of design capture storm depth" at which the BMP drawdown time (T) line X1= 0.3 achieves 80% capture efficiency, X, 4 Enter the effect depth of provided HSCs upstream, dHsc dHsc= n/a inches (inches) (Worksheet A) 5 Enter capture efficiency corresponding to dHsc, Y2 Y,= n/a % (Worksheet A) Using Figure 111.2, determine the fraction of "design capture 6 storm depth" at which the drawdown time (T) achieves the X,= n/a equivalent of the upstream capture efficiency(Y,), X2 7 Calculate the fraction of design volume that must be provided fraction= 0.3 by BMP, fraction = X, -X2 8 Calculate the resultant design capture storm depth (inches), drraction= 0.21 inches d1ra,uon= fraction X d SOC Only: When using this method for biofiltration sizing, 9 check that the resulting volume in ponding plus pore spaces is Y/N/NA at least 0. 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= 0.06 acres 2 Enter Project Imperviousness, imp (unitless) imp= 0.95 3 Calculate runoff coefficient, C= (0. 75 x imp) + 0. 15 C= 0.86 Calculate runoff volume, Vdesign= (C x drtra,,on x Ax 43560 x Vdesign= 39.4 cu-ft 4 (1112)) • Supporting Calculations Total site area = 2550 sf. Ponding depth (Dp) =1 ft. with 4" diameter underdrain pipe, & K=lnfiltration rate=2.5 in/hr Drawdown time= DD= (Dp/K)x12 = (1/2.5)x12 = 4.8 hours A required= (Vdesign/Dp)= 39.4/1.5=26.30 sf. Proposed infiltration: Width= 2 ft. & Length= 21 ft----> Provided Area= 2 x 21 = 42 sf. > 26.30 sf. O.K. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 18 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Provide drawdown time calculations per applicable BMP Fact Sheet: • Graphical Operations 100% 90% 80% 70% >, V C: .~ 60% (,J :: w 50% QI ... ::, a 40% ii:, (.) 30% 20% 10% 0% ..,...,."'1,. ... : ... : ~-, ,,_.,.;· 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. 550 S. Bay Front Section IV North OC Priority WQMP Te mplate December, 2013 Drawdown Time ...,_1-hr 2-hr 3-11r -+-6-hr --12-hr --24-hr --36-hr -48-hr --72-hr -96-hr -o--120-hr -180-hr -+-240-hr 360-hr 480-hr 720-hr Page 19 Priority Project Water Quality Management Plan (WQMP) Rodman Residence IV.3.3 Evapotranspiration, Rainwater Harvesting BMPs If the full Design Storm Capture Volume cannot be met with infiltration BMPs, describe any evapotranspiration and/ or rainwater harvesting BMPs included. Name Included? All HSCs; See Section IV.3.1 □ Surface-based infiltration BMPs □ Biotreatrnent BMPs □ Above-ground cisterns and basins □ Underground detention □ Other: □ Other: □ Other: □ Show calculations below to demonstrate if the LID Design Storm Capture Volume can be met with evapotranspiration and/ or rainwater harvesting BMPs in combination with infiltration BMPs. If not, document below 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 these BMP categories. Not Applicable 550 5. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 20 Priority Project Water Quality Management Plan (WQMP) Rodman Residence 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 biotreatrnent BMPs included. Include sections for selection, suitability, sizing, and infeasibility, as applicable. Name Included? Bioretention with underdrains 12:1 Stormwater planter boxes with underdrains □ Rain gardens with underdrains □ Constructed wetlands □ Vegetated swales □ Vegetated filter strips □ Proprietary vegetated biotreatment systems □ Wet extended detention basin □ Dry extended detention basins □ Other: □ Other: □ 550 5. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 21 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Show calculations below to demonstrate if the LID Design Storm 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 these BMP categories. Lot Area=2550 sf.; Roof and hardscape area=2424 sf.; Impervious=2424/2552=0.95 C=0.75x0.95+0.15=0.88 DCV=(0.86x0.7x2552)/12=128 CF. The site does not allow for adequate area for harvest and reuse and therefore, the infiltration trench is proposed to mitigate the WQMP requirements. IV.3.5 Hydromodification Control BMPs Describe hydromodification control BMPs. Detail compliance with Prior Conditions of Approval (if applicable). Hydromodification Control BMPs BMPName BMP Description Not Applicable IV.3.6 Regional/Sub-Regional LID BMPs Describe regional/ sub-regional LID BMPs in which the project will participate. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 22 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Regional/Sub-Regional LID BMPs Not Applicable 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. Treatment Control BM Ps BMP Name BMP Description 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 23 Priority Project Water Quality Management Plan (WQMP) Rodman Residence 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-Structural Source Control BMPs Check One Identifier If not applicable, state brief Name Not reason Included Applicable Nl Education for Property Owners, ~ □ Tenants and Occupants .................... ......................................................... ...... ~ ....... """'"□ ........ ·························•"''''''''"'"''"''''' N2 Activity Restrictions .................... ......................................................... ................. ..................... ·························· ..................... N3 Common Area Landscape □ ~ This is a residential project Management .................... ......................................................... ...... ~ ....... """'"□ ........ ···························"·· ................ N4 BMP Maintenance .................... ......................................................... 1, ................. .. ................... . .............................................. NS Title 22 CCR Compliance (How □ 0 This is a residential project development will comply) .................... ......................................................... .. .. . .. □ ....... . ........ ~ ........ ............................................... N6 Local Industrial Permit Compliance This is a residential project .................... ......................................................... .. .... -□ ....... ......... ~ ........ ............................................... N7 Spill Contingency Plan This is a residential project .................... ......................................................... ................. ..................... ............................................... NS Underground Storage Tank □ □ This is a residential project Compliance .................... ......................................................... ................. ..................... ............................................... N9 Hazardous Materials Disclosure □ □ This is a residential project Compliance .................... ......................................................... ...... ~ ....... """'"□ ........ ............................................... N10 Uniform Fire Code Implementation .................... ......................................................... ................. ..................... ............................................... N11 Common Area Litter Control □ □ This is a residential project .................... ......................................................... ...... □"""' """""□ ........ ............................................... N12 Employee Training This is a residential project .................... ......................................................... . .... .. □ ....... """'"□ ........ .. ............................................. N13 Housekeeping of Loading Docks This is a residential project .................... ......................................................... . ...... □ ....... "'"'"'□ ........ . .............................................. N14 Common Area Catch Basin Inspection This is a residential project .................... ......................................................... ................. ..................... ............................................... N15 Street Sweeping Private Streets and □ □ This is a residential project Parking Lots .................... ......................................................... ...... □"""' ......... □ ........ ............................................... N16 Retail Gasoline Outlets This is a residential project Nl. Education for Property Owners, Tenants and Occupants Educational handouts will be prepared and given to property owner for his/her reference. Property owner will share these materials with others including occupants, and management company regarding the project water quality management plan and its advantages and ramifications. 550 S. Bay Front Section IV North QC Priority WQMP Template December, 2013 Page 24 Priority Project Water Quality Management Plan (WQMP) Rodman Residence N2. Activity Restrictions In accordance with the City of Newport Beach municipal code regulations, restrictions on construction hours is imposed to reduce the construction activity which impacts on the adjacent properties. Also, activities such as painting, oil change, hazardous material use, etc., will be restricted on site. N4. BMP Maintenance Property owner or his/her representative will be responsible for BMP inspections and maintenance operation as shown in section V. The inspections and maintenance activities shall be documented and compiled in log sheets. NlO. Uniform Fire Code Implementation Prevention, control and mitigation of dangerous conditions related to storage, dispensing, use and handling of hazardous materials will be conducted. The discharge of any waste liquid such as crude petroleum or it's associated product into drainage facilities, storm drain, and sewer is restrictively prohibited. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 25 Priority Project Water Quality Management Plan (WQMP} Rodman Residence 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 Check One Identifier Name I f not applicable, state brief Included Not reason Applicable S1 Provide storm drain system stenciling □ [8] No storm drains near by and signage Design and construct outdoor material S2 storage areas to reduce pollution □ [8] No outdoor storage introduction Design and construct trash and waste S3 storage areas to reduce pollution □ [8] This is a residential project introduction Use efficient irrigation systems & S4 landscape design, water conservation, [8] □ smart controllers, and source control S5 Protect slopes and cha1mels and □ [8] No runoff over slopes provide energy dissipation Incorporate requirements applicable to [8] This is a residential project & not individual priority project categories □ (from SDRWQCB NPDES Permit) Applicable S6 Dock areas □ [8] No Dock area S7 Maintenance bays □ [8] No Maintenance bays S8 Vehicle wash areas □ [8] No Vihicle wash areas S9 Outdoor processing areas □ [8] No Outdoor processing areas S10 Equipment wash areas □ [8] No Equipment wash areas S11 Fueling areas □ [8] No Fueling areas S12 Hillside landscaping □ [8] No Hillside landscaping S13 Wash water control for food □ [8] No Food preparation areas preparation areas S14 Community car wash racks □ [8] No Community car wash racks S4. Irrigation system will be efficient by proper spacing, preventing overspray, limiting water usage and water conservation. System will be equiped with smart controller and the area will be periodically monitored for silt and debris. 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 26 Priority Project Water Quality Management Plan (WQMP) Rodman Residence IV.4 Alternative Compliance Plan {If Applicable) Describe an alternative compliance plan (if applicable). Include alternative compliance obligations (i.e., gallons, pounds) and describe proposed alternative compliance measures. IV.4.1 Water Quality Credits Determine if water quality credits are applicable for the project. Description of Proposed Project Project Types that Qualify for Water Quality Credits (Select all that apply): □Redevelopment □Brownfield redevelopment, meaning D Higher density development projects which projects that reduce the redevelopment, expansion, or reuse of real include two distinct categories (credits can only overall impervious footprint of the project property which may be complicated by the be taken for one category): those with more presence or potential presence of hazardous than seven units per acre of development (lower site. substances, pollutants or contaminants, and credit allowance); vertical density which have the potential to contribute to developments, for example, those with a Floor adverse ground or surface WQ if not to Area Ratio (FAR) of 2 or those having more redeveloped. ___ than 18 units per acre (greater credit allowance). D Mixed use development, such as a D Transit-oriented developments, such as a D Redevelopment projects combination of residential, commercial, industrial, office, institutional, or other land uses which incorporate design principles that can demonstrate environmental benefits that would not be realized through single use projects (e.g. reduced vehicle trip traffic with the potential to reduce sources of water or air pollution). mixed use residential or commercial area designed to maximize access to public transportation; similar to above criterion, but where the development center is within one half mile of a mass transit center (e.g. bus, rail, light rail or commuter train station). Such projects would not be able to take credit for both categories, but may have greater credit assigned in an established historic district, historic preservation area, or similar significant city area including core City Center areas (to be defined through mapping). D Live-work Din-fill projects, the □Developments with dedication of undeveloped portions to parks, preservation areas and other pervious uses. Calculation of Water Quality Credits (if applicable) □ Developments D Developments in historic in a city center districts or area. historic preservation areas. developments, a variety of developments designed to support residential and vocational needs together - similar to criteria to mixed use development; would not be able to take credit for conversion of empty lots and other underused spaces into more beneficially used spaces, such as residential or commercial areas. ______________________________ both categories. ______________________ ------------------------------------------------ Not Applicable 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 27 Priority Project Water Quality Management Plan (WQMP) Rodman Residence IV.4.2 Alternative Compliance Plan Information Describe an alternative compliance plan (if applicable). Include alternative compliance obligations (i.e., gallons, pounds) and describe proposed alternative compliance measures. Not Applicable 550 S. Bay Front Section IV North OC Priority WQMP Template December, 2013 Page 28 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Section V Inspection/Maintenance Responsibility for BMPs Fill out information in table below. Prepare and attach an Operation and Maintenance Plan. Identify the funding 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. BMP Inspection/Maintenance Inspection/ Minimum BMP Reponsible Maintenance Frequency of Party(s} Activities Activities Required Monitor for clogging & Minimum two times per year and/ or Infiltration Trench Property owner remove any sediment before each major deposit, debris & trash storm event 550 5. Bay Front Section v North OC Priority WQMP Template December, 2013 Page 29 Priority Project Water Quality Management Plan (WQMP) Rodman Residence Section VI BMP Exhibit (Site Plan) VI.1 BMP Exhibit (Site Plan) VI.2 Submittal and Recordation of Water Quality Management Plan Following approval of the Final Project-Specific WQMP, three copies of the approved WQMP (including BMP Exhibit, Operations and Maintenance (O&M) Plan, and Appendices) shall be submitted. In addition, these documents shall be submitted in a PDF format. Each approved WQMP (including BMP Exhibit, Operations and Maintenance (O&M) Plan, and Appendices) shall be recorded in the Orange County Clerk-Recorder's Office, prior to close-out of grading and/ or building permit. Educational Materials are not required to be included. 550 S. Bay Front Section VI North OC Priority WQMP Template December, 2013 Page 30 and tins Island i . \ Balboa Island ,'(, C, ' ' /1 !ollim./'.~=~; ~~ l!/1!l'l!i"l!I Ii:: _J._-..,,.,,.,.,,,,(,11? t;:,Q,I lfi--~m,, Bal l USGS US Topo 7.S-minute map for Newport Beach OE S, CA, dated December 12, 2021. EGA Consultants engineering gcotedmical upplicalions SITE LOCATION MAP 550 S. BAY FRONT NEWPORT BEACH, CALIFORNIA Project No: IH383.l Date: MAY 2022 Figure No: 1 ,... , .. Ht ""'' "''"""' ' ui ~ ! 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ONLY 1"1>-LL IS OPEN CR IS la<!;Tl<IJC,Tl:D OF,'. NST. 1<0. 1~eil003< ~ AAEllT 1'!,'. Tfl'>-L. ® 5ET6AGKLNE I FLOOD ZONE = A0-1 J ,o 5C-ALE 1" = 10' PREPARED BY: f<.C,E CONSULTANTS, INC.. 20 18021 SKY PARK C.IRC.LE, SUITE E2 IRVINE, C.ALIFOR.NIA <12614 'l4'1/ 466-<f:l<f4 ALI f<.EZAEI ALI f<.EZAEI f<..C..E. 41068 DATE O~Ef<.: SEC-TION YI: PRIORITY PROJEC,T l"laMP --- LINDA AND LAf<.RY f<.ODMAN DRAINAGE MANAGEMENT Af<.EA PLAN 550 SOUTH BAY FRONT BALBOA ISLAND, C,A <12662 THE f<.ODMAN RESIDENC.E 62b/:l54-'l22<f 550 50UTH BAY FRONT BALBOA ISLAND, C.A ~ ~i i:: t;l f ~' f ' ~L : ~ {-4. : :z r..:r rr •= "" 12 ®--/4 @-t ' ' ' r---T---,1 I I II :11l~:a,i!l11 2CAR. GAR.AGE GIMlQ.t\11,:l'O••'\OOlW,,v:,e.&t LEGEND ~ 6,'Gj(()fl\,\U( I PIA'lft/6 ;.,v. TC TO'Of ""'-9 !,.QI; TO DIW<5 FL fi..()'iUiE a><1<. 1'11' FS FK~>a • c:.<TOl5~ 6ro!)OCj(. EG E>Q!,T}ISWOf 'l'S0-00-KCREO.W. NG NA"-"X. 6fV,DE 5'2!:Pa<PIA• FG Ft<. o,RA!lf 0 •·4)~ DAAll FF FN. Fl.OOI< afV. 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THWOR.K ESTIMATE EARTHV'lORK ITEM QUANTITY UNIT ~C.UT 0 GY ~FILL \8f> GY LOT AREA = 2SS2SF 0 10 lt-iPERVIOJ5 5URFAC.E 2424 SF LAND5c.APE AREA 12BSF 5c.ALE 1"= 10' = GID Bt-iP COORDINATES 33.6045BB -111.BCfS81BB REVISIONS # DATI: DE5CRIPTION I-z >-0 < ~ c:o u.. >-~ < Q co I 3 I-:.w 1q ::::i z $1 20 OY',NER: --- PERFOAA TEt> DAANl.l!<E. 51.0f'Eo IIIMIN. ® P\.AATER rt1ll e,,w.,E SI.OPE TO DAAtl I 2% MIN. @ ~=-~EC,T 6UTTER TO LNDER6Ra.l<D Dl<At<A6E 5Y5TcM. f'l'OVIDf DOME l'IRf 11,161<.eT t EAGI! AAIN i'l'TER LE,',OER~ ROOF DR>K @ ~ 6' MAX ~16H GM\/ l'\ALL THE HE161<TOF f'fNC.ESASDrw.1..5 rlTH:N RfGlJ1!<W 5<t>E N-0 RfAA YAAD 5ETBAGKHV-6MAYBE ~. l'ROVl'fD °™E He61<T DOf5 tt:>T = !>X Fa:T A5 MEA5I/RfD nwM THE Pl'tOPO.:,W FINISllEt> 6AADI: ~ NINE Fa:T A5 M~ f'1'0M M EXl5TIN6 6AAt>E F'l<JOR TO caGTIWGTION. ADDfT'l()N!,.LLY. THE HEl6HT OF FENGES OIi. l'\ALLS 5HAI..L HOT EXGEEDIIINE fW ASMEAWIOW Fl>.OM 1\£ l"JQ5TIN6 6AADI: OF N< >aUTTN6 LOT. THE PORTION OF THE Fl!NGE OIi. 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HO. 1""500I0003q 5ETBA(;K l.NE 5EC.TION VI: PRIORITY PROJEC,T ~MP LINDA AND LAA.RY RODt-iAN GRADING AND BMP PLAN 550 SOUTH BAY FRONT BALBOA ISLAND, C,A 92662 THE RODMAN RE5IDENC.E 626/354-'122"1 SSO 50\JTH BAY FRONT BALBOA ISLAND, C,A Priority Project Water Quality Management Plan (WQMP) Rodman Residence Section VII Educational Materials Refer to the Orange County Stormwater Program (ocwatersheds.com) for a library of materials available. Please only attach the educational materials specifically applicable to this project. Other materials specific to the project may be included as well and must be attached. Education Materials Residential Material Check If Business Material Check If (http:/ /www.ocwatersheds.com) Applicable (http:/ /www.ocwatersheds.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 □ Water Use Business Household Tips ~ Check If Proper Disposal of Household Other Material Hazardous Waste ~ Attached Recycle at Your Local Used Oil □ □ Collection Center (North Cow1ty) 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 □ □ 550 S. Bay Front Section VII North OC Priority WQMP Template December, 2013 Page 31 Priority Project Water Quality Management Plan (WQMP) Rodman Residence ATTACHMENTS EDUCATIONAL MATERIALS 550 S. Bay Front Section VII North OC Priority WQMP Template December, 2013 Page 32 R-1 AUTOMOBILE REPAIR AND MAINTENANCE Automobile repair and maintenance activities have the potential to contribute directly to storm drain systems primarily through spills or the dumping of waste fluids being conveyed to the storm drain. Automotive fluids, such as oils, greases, and solvents, are hydrocarbon based, and may contain metals, chlorinated hydrocarbons, and other toxic compounds. Removal of caked dirt and grime from an automobile increases the sediment load to the storm drain system. The pollution prevention activities outlined in this fact sheets are used to prevent the discharge of pollutants to the storm drain system. The activities outlined In this fact Think before conducting automobile repair and maintenance activities. Remember -The ocean starts at your front door. Required Activities sheet target the following Dollutanta: Sediment Nulrlents Bacteria Foemlna Aaents Metals Hvdrocarbons Hazardous Materials Pesticides and Herbicides Other • Recycle used oil and antifreeze by taking them to service stations and other recycling centers, Never pour oil in storm drains or other areas. • Do not perform repair and maintenance activities during rain events. X X X X • Immediately clean up and contain any spills. Dispose of all waste and adsorbent materials properly. RECYCLE USED 011. • Store hazardous materials and wastes (including, but not limited to, fluids, solvents, parts containing fluids, batteries) indoors, under cover, or in watertight containers. • Perform automobile maintenance and repairs over impervious surfaces such as concrete, so spills and waste material should be readily cleaned up. Use drip pans, plastic sheeting, etc. to contain spills and waste material. '· • Dispose of cleaning solvents at the designated hazardous waste center. Recommended Activities • Conduct auto repair activities at a com1nerdal repair facility • Perform automobile repair and maintenance activities under a covered area. • Do not buy fluids containing target pollutants (e.g. degreasers containing PERC). • Monitor parked or stored vehicles and equipment for leaks and place pans under leaks to collect fluids for proper disposal or recycling. For additional Information contact: County of Orange, OC Watershed Main: (714) 955-0600 Water Pollution Discharge Hotline 1-877-89-SPILL or visit our website at: www.ocwatersheds.com R-2 AUTOMOBILE WASHING The acUvltles outlined In this fact Automobile washing activities have the potential to contribute pollutants because road dust washed from vehicles may contain metals and hydrocarbons. Any leaking fluids washed from the automobile may be carried to the storm drain by the wash water. Detergents used for automobile washing may also contain phosphorus and foaming agents, which contribute to the eutrophication of receiving waterbodies. The pollution prevention activities outlined in this fact sheets are used to prevent the discharge of pollutants to the storm drain system. sheet target the following oollutants: Sediment Nutrients Bacteria Foamlna Aaents Metals Hvdrocarbons Hazardous Materials Pesticides and Herbicides Other Think before conducting automobile washing activities. Remember -The ocean starts at your front door. Required Activities • Shake floor mats into trashcan or vacuum to clean. Do not shake over ground. • If using cleaners (such as acid based wheel cleaners) use a rag to wipe them on and off, do not rinse them off with water. • If possible, divert runoff from automobile washing to a grassy surface large enough to contain and allow complete infiltration • Dispose of excess wash water into the sanitary sewer (i.e. via sink, or toilet) or onto a landscaped area that will allow for complete infiltration. • Conduct engine degreasing at a commercial facility that is set up to handle that type of waste. Recommended Activities • When possible, use commercial wash facilities • Wash vehicles over pervious surfaces such as lawns and gravel areas • Choose soaps, cleaners, or detergents labeled "non-toxic"., uphosphate free", or "biodegradable". Vegetable and citrus-based products are typically safest for the environment. • Turn off water when not actively washing down automobile. • If available, use established neighborhood wash areas, where runoff is properly controlled and managed. For additional lnformaUon contact: County of Orange, OC Watershed Main: (714) 955-0600/ 24hr Water Pollution Discharge Hotline 1-877-89-SPILL or visit our website at: www.ocwatersheds.com X X X X X X R-3 AUTOMOBILE PARKING The activities outlined In this fact Parked automobiles may contribute pollutants to the storm drain because poorly maintained vehicles may leak fluids containing hydrocarbons, metals, and other pollutants. In addition, heavily soiled automobiles may drop clods of dirt onto the parking surface, contributing to the sediment load when runoff is present, During rain events, or wash-down activities, the pollutants may be carried into the storm drain system. The pollution prevention activities outlined in this fact sheets are used to prevent the discharge of pollutants to the storm drain system. sheet target the following nollutants: Sediment Nutrients Bacteria Foamlna Aaents Metals Hvdrocarbons Hazardous Materials Pesticides and Herbicides Other Think before parking your car. Remember -The ocean starts at your front door. Required Activities • If required, vehicles have to be removed from the street during designated street sweeping/ cleaning times. • If the automobile is leaking, place a pan or similar collection device under the automobile, until such time as the leak may be repaired. • Use dry cleaning methods to remove any materials deposited by vehicles (e.g. adsorbents for fluid leaks, sweeping for soil clod deposits). Recommended Activities • Park automobiles over permeable surfaces (e.g. gravel, or porous cement). • Limit vehicle parking to covered areas. • Perform routine maintenance to minimize fluid leaks, and maximize fuel efficiency. For additional Information contact: County of Orange, oc Watershed Main: (714) 955-0600/ 24hr Water Pollution Discharge Hotline 1-877-89-SPILL or visit our website at: www.ocwatersheds.com X X X X R-4 HOME AND GARDEN CARE ACTIVITIES HOME CARE The activities outlined In this fact Many hazardous materials may be used in and around residences during routine maintenance activities (such as: oils, paints, cleaners, bleaches, pesticides, glues, solvents, and other products). Improper or excessive use of these products can increase the potential for pollutants to be transported to the storm drain by runoff. The pollution prevention activities outlined in this fact sheets are used to prevent the discharge of pollutants to the storm drain system. Think before conducting home care activities. Remember -The ocean starts at your front door. Required Activities sheet target the following Dollutants: Sediment . Nutrients Bacteria Foamlno Aaents Metals Hvdrocarbons Hazardous Materials Pestlcldes and Herbicides Other X X X X X X X • Clean out painting equipment in an area where the waste can be contained and properly disposed of (latex -sewer, oil based -household hazardous waste center). • Rinse off cement mixers and cement laden tools in a contained washout area. Dispose of dried concrete waste in household trash. • If safe, contain, clean up, and properly dispose all household hazardous waste spills. If an unsafe condition exists, call 911 to activate the proper response team. • Household hazardous materials must be stored indoors or under cover, and in closed and labeled containers. Dispose of them at a household hazardous waste center. • Household wash waters (e.g. washer machine effluent, mop water, etc.) must be disposed of in the sanitary sewer. • Pool and spa water may be discharged to the storm drain if residual chlorine is less than 0.1 mg/L, the pH is between 6.5 and 8.5, and the water is free from any unusual coloration. (Call 714-834-6107 to obtain information on a pool drain permit). Pool filter media must be contained and disposed of properly. Recommended Activities • Only purchase the types and amounts of materials needed. • Share unused portions of products with neighbors or community programs (latex paint) For additional lnformaUon contact: County of Orange, oc Watershed Main: (714) 955-0600/ 24hr Water Pollution Discharge Hotline 1-877-89-SPILL or visit our website at: www.ocwatersheds.com R-5 DISPOSAL OF PET WASTES Pet wastes left in the environment may introduce solids, bacteria, and nutrients to the stom1 drain. The type and quantity of waste will dictate the proper disposal method. Small quantities of waste are best disposed with regular trash or flushed down a toilet. Large quantities of wastes from herbivore animals may be composted for subsequent use or disposal to landfill. Pick up after your pet! It's as easy as 1-2-3. 1) Bring a bag. 2) Clean it up. 3) Dispose of it properly (toilet or trash). The pollution prevention activities outlined in this fact sheets are used to prevent the discharge of pollutants to the storm drain system. The activities outlined In this fact sheet target the following oollutants: Sediment X Nutrients X Bacteria X Foamlno Aoents Metals Hvdro•0 rbons Hazardous Materials Pesticides and Herbicides Other Think before you dispose of any pet wastes. Remember -The ocean starts at your front door. Required Activities • All pet wastes rnust be picked up and properly disposed of. Pet waste should be disposed of in the regular trash, flushed down a toilet, or composted as type and quantities dictate. • Properly dispose of unused flea control products (shampoo, sprays, or collars). • Manure produced by livestock in uncovered areas should be removed at least daily for composting, or storage in water-tight container prior to disposal. Never hose down to stream or storm drain. Composting or storage areas should be configured and maintained so as not to allow contact with runoff. Compost may be donated to greenhouses, nurseries, and botanical parks. Topsoil companies and composting centers may also accept composted manure. • Line waste pits or trenches with an impermeable layer, such as thick plastic sheeting. • When possible, allow wash water to infiltrate into the ground, or collect in an area that is routed to the sanitary sewer. • Confine livestock in fenced in areas except during exercise and grazing times. Restrict animal access to creeks and streams, preferably by fencing. For additional Information contact: County of Orange, oc Watershed Main: (714) 955-0600/ 24hr Water Pollution Discharge Holllne 1-877-89-SPILL or visit our website at: www.ocwatersheds.com R-6 DISPOSAL OF GREEN WASTES Green wastes entering the storm drain may clog the system creating flooding problems. Green wastes washed into receiving waters create an oxygen demand as they are decomposed, reducing the available oxygen for aquatic life. Pesticide and nutrient residues may be carried to the receiving water with the green wastes. The p ollution prevention activities outlined in this fact sheets are used to prevent the discharge of pollutants to the storm drain system. The activities outlined In this fact sheet target the following 00ll utants: Sediment X Nutrients X Bacteria X Foamlno Aoents Metals Hvdrocarbons Hazardous Materials X Pesticides and X Herbicides Other Think before disposing of any green wastes -Remember -The ocean starts at your front door. Required Activities • Green wastes can not be disposed of in the street, gutter, public right-of-way, storm drain, or receiving water. Dispose of green wastes as a part of the household trash. If the quantities are too large, arrange a pick up with the local waste hauler. • After conducting yard or garden activities sweep the area and properly dispose of the clippings and waste. Do not sweep or blow out into the street or gutter. Recommended Activities • Utilize a commercial landscape company to conduct the landscape activities and waste disposal. , • Utilize native plants and drought tolerant species to reduce the water use and green waste produced. • Use a lawn mower that has a mulcher so that the grass clippings remain on the lawn and d o no t h ave to be collected and d isposed of. I • Compost materials in a designated area within the yard. • Recycle lawn clippings and greenery waste th.rough local programs if available. For additional Information contact: County of Orange, OC Watershed Main: (714) 955-0600/ 24hr Water Pollution Discharge Hotline 1-877-89-SPILL or visit our website at: www.ocwatersheds.com GARDEN CARE Garden activities may contribute pollutants via soil erosion, green waste, fertilizer and pesticide use. Plant and garden care activities such as landscape maintenance, fertilization, and pesticide application have the potential to discharge significant quantities of pollutants to the storm drain system. Nonvegetated surfaces may allow for significant erosion leading to high sediment loads. Other pollutants such as pesticides may adsorb onto the soil particles and be transported off site. Excess fertilizer and pesticide pollutants from over application may be carried to the storm drain by dissolving in irrigation runoff or rainwater. Green wastes may also contain organic matter and may have adsorbed fertilizers and pesticides. The activities outlined In this fact sheet target the following oollutenta: Sediment X Nutrients X Bacteria X Foarnlna Aaents Metals Hvdrocarbons Hazardous Materials Pesticides and X Herbicides Other X Excessive irrigation is often the most significant factor in home and garden care activities. Pollutants may dissolve in irrigation water and then be transported to the storm drain, or particles and materials coated with fertilizers and pesticides may be suspended in the irrigation flow and carried to the storm drain. The pollution prevention activities outlined in this fact sheets are used to prevent the discharge of pollutants to the storm drain system. Think before conducting garden care activities. Remember -The ocean starts at your front door. Required Activities • • • • • • Irrigation systems must be properly adjusted to reflect seasonal water needs . Minimize the use of pesticides and fertilizers. Read the labels and follow directions to avoid improper use. Do not apply chemicals if ii is windy or about to rain. Properly clean up and dispose of spills of gardening chemicals, fertilizes, or soils. If possible, return the spilled material to the container for future use. Lawn and garden care products must be stored in closed labeled containers, in covered areas, or off-ground and under protective tarps. Household hazardous waste must be properly disposed at a household hazardous waste center. Cover nonvegetated surfaces to prevent erosion . Recommended Activities • Utilize xeroscaping and use of drought and insect resistant landscaping. • Cultivate garden often to control weeds • Use integrated pest management (1PM). Planting pest repelling plants (e.g. Marigolds) or using pest eating insects (e.g. ladybugs) may reduce the need for pesticides. • Do not leave food (human or pet) outside overnight • Remove fruit and garden waste For additional Information contact: County of Orange, OC Watershed Main: (714) 955-0600/ 24hr Water Pollulion Discharge Hotline 1-877-89-SPILL or visit our website at: www.ocwatersheds.com Household hazardous wastes (HHW) are defined as waste materials which are typically found in homes or similar sources, which exhibit characteristics such as: corrosivity, ignitability, reactivity, and/ or toxicity, or are listed as hazardous materials by EPA. The activities outlined In this fact List of moat common HHW products: Drain openers Oven cleaners Wood and metal cleaners and polishes Automotive oll and fuel additives Grease and rust solvents Carburetor and fuel Injection cleaners Starter fluids Battertes Paint Thinners Paint slrlppers and removers Adhesives Many types of waste can be recycled, however options for each waste type are limited. Recycling is always preferable to disposal of unwanted materials. All sheet target the following oollutants: Sediment Nutrients Bacteria Foamlna Aaents Metals Hvdrocarbons Hazardous Materials Pesticides and Herbicides Other gasoline, antifreeze, waste oil, and lead-acid batteries can be recycled. Latex and oil-based paint can be reused, as well as recycled. Materials that cannot be reused or recycled should be disposed of at a properly permitted landfill. X X X X X X Herbicides Pesticides Fungicides/wood preservaUves Think before disposing of any household hazardous R E c y c L E waste. Remember -The ocean starts at your front door. lJ s r-, D O I I. Required Activities • Dispose of HHW at a local collection facility. Call (714) 834-6752 for the household hazardous waste center closest to your area. • Household hazardous materials must be stored indoors or under cover, and in closed and labeled containers. • If safe, contain, clean up, and properly dispose all household hazardous waste spills. I{ an unsafe condition exists, call 911 to activate the proper response team. Recommended Activities • Use non-hazardous or less-hazardous products. • Participate in HHW reuse and recycling. Call (714) 834-6752 for the participating household hazardous waste centers. The Califomla /11/egrated Waste Management Board has a Recycling Hotline (800) 553-2962, that provides information and recycJ/ng locations for usodo/1, For additional Information contact: County of Orange, OC Watershed Main: (714) 955-0600/ 24hr Water Pollution Discharge Hotline 1-877-89-SPILL or visit our website at: www.ocwatersheds.com • Install gutters that will divert roof runoff away from livestock areas. Recommended Activities • In order to properly dispose of pet waste, carry bags, pooper-scooper, or equivalent to safely pick up pet wastes while walking with pets. • Bathe pets indoors and use less toxic shampoos. When possible, have pets professionally groomed. • Properly inoculate your pet in order to maintain their health and reduce the possibility of pathogens in pet wastes. • Maintain healthy and vigorous pastures with at least three inches of leafy material, • Consider indoor feeding of livestock during heavy rainfall, to minimize manure exposed to potential runoff. • Locate barns, corrals, and other high use areas on portions of property that either drain away from or are located distant form nearby creeks or storm drains. For additional Information contact: County of Orange, 0C Watershed Main: (714) 955-0600/ 24hr Water Pollution Discharge Hotline 1-877-89-SPiLL or visit our website at: www.ocwatersheds.com I R-8 WATER CONSERVATION Excessive irrigation and/ or the overuse of water is often the most significant factor in transporting pollutants to the storm drain system. Pollutants from a wide variety of sources including automobile repair and maintenance, automobile washing, automobile parking, home and garden care activities and pet care may dissolve in the water and be transported to the storm drain. In addition, particles and materials coated with fertilizers and pesticides may be suspended in the flow and be transported to the storm drain. Hosing off outside areas to wash them down not only The actlvltles outlined In this fact &heel target the following Mllutants: Sediment X Nutrients X Bacteria X Foamlna Aaents X Metals X Hvdrocarbons X Hazardous Materials X Pesticides and X Herbicides Other X consumes large quantities of water, but also transports any pollutants, sediments, and waste to the storm drain system. The pollution prevention activities outlined in this fact sheets are used to prevent the discharge of pollutants to the storm drain system. Think before using water. Remember -The ocean starts at your front door. Required Activities • Irrigation systems must be properly adjusted to reflect seasonal water needs. • Do not hose off outside surfaces to clean, sweep with a broom instead. Recommended Activities • Fix any leaking faucets and eliminate unnecessary water sources. • Use xeroscaping and drought tolerant landscaping to reduce the waterit~ needs. • Do not over watering lawns or gardens. Over watering wastes water and promotes diseases. • Use a bucket to re-soak sponges/rags while washing automobiles and other items outdoors. Use hose only for rinsing, ,// • Wash automobiles at a commercial car wash employing water recycling. For additional Information contact: County of Orange, OC Watershed Main: (714) 955-0600/ 24hr Water Pollution Discharge Hotline 1-877-89-SPILL or visit our website at: www .ocwatersheds.com