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Home My WebLink AboutPA2022-042_20220216_WQMP_1-27-22:4 &RXQW\RI2UDQJH6DQWD$QD 5HJLRQ 3ULRULW\3URMHFW :DWHU4XDOLW\0DQDJHPHQW3ODQ :403 3URMHFW1DPH &KHQ V5HVLGHQFH *5$',1*3(50,712$''5(66*$/$;<'51(:3257 %($&+/272)75$&712$1'$31 3UHSDUHGIRU (GGLH&KHQ *DOD[\'U 1HZSRUW%HDFK&$ 3KRQH 3UHSDUHGE\ -7&RQVXOWLQJ(QJLQHHUV *DUGHQDLUH/DQH *DUGHQ*URYH&$ MGWUDQ#JPDLOFRP 'DWH3UHSDUHG PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH KǁŶĞƌ͛ƐĞƌƚŝĨŝĐĂƚŝŽŶ EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭ WĂŐĞŝ This Water Quality Management Plan (WQMP) has been prepared for Eddie Chen by JT Consulting Engineers. The WQMP is intended to comply with the requirements of the County of Orange 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 , 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: Eddie Chen Title Company Address 1424 Galaxy Dr. Email Telephone # 949-584-9594 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 Signature Date 3URMHFW2ZQHU¶V&HUWLILFDWLRQ Planning Application No. (If applicable) N/A Grading Permit No. 0411Ǧ2021 Tract/Parcel Map and Lot(s) No. Lot 78 of Tract No. 4224 Building Permit No. Address of Project Site and APN (If no address, specify Tract/Parcel Map and Lot Numbers) 1424GalaxyDr.,APN 117Ǧ671Ǧ14 PA2022-042 tĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYHKǁŶĞƌ͛ƐĞƌƚŝĨŝĐĂƚŝŽŶ EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭ WĂŐĞŝŝ Preparer (Engineer): John Tran Title Principal PE Registration # C-62653 Company JT Consulting Engineers Address 11251 Gardenaire Lane, Garden Grove, CA 92841 Email jdtran07@gmail.com Telephone # 714-815-2356 I hereby certify that this Water Quality Management Plan is in compliance with, and meets the requirements set forth in, Order No. R8-2009-0030/NPDES No. CAS618030, of the Santa Ana Regional Water Quality Control Board. Preparer Signature Date 1-27-2022 Place Stamp Here PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYHdĂďůĞŽĨŽŶƚĞŶƚƐ EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭ WĂŐĞŝŝŝ &RQWHQWV3DJH1R 6HFWLRQ, 3HUPLWVDQG:DWHU4XDOLW\&RQGLWLRQVRI$SSURYDORU,VVXDQFH 6HFWLRQ,, 3URMHFW'HVFULSWLRQ 6HFWLRQ,,,6LWH'HVFULSWLRQ 6HFWLRQ,9%HVW0DQDJHPHQW3UDFWLFHV%03V 6HFWLRQ9,QVSHFWLRQ0DLQWHQDQFH5HVSRQVLELOLW\IRU%03V 6HFWLRQ9,%03([KLELW6LWH3ODQ 6HFWLRQ9,,(GXFDWLRQDO0DWHULDOV $WWDFKPHQWV $WWDFKPHQW$(GXFDWLRQDO0DWHULDOV PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/ EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭ WĂŐĞϭ 6HFWLRQ, 3HUPLWVDQG:DWHU4XDOLW\&RQGLWLRQVRI$SSURYDORU ,VVXDQFH 3URMHFW,QIRPDWLRQ Permit/Application No. (If applicable) N/A Grading or Building Permit No. (If applicable) - Address of Project Site (or Tract Map and Lot Number if no address) and APN 1424 Galaxy Dr., Newport Beach APN: 117-671-14 :DWHU4XDOLW\&RQGLWLRQVRI$SSURYDORU,VVXDQFH Water Quality Conditions of Approval or Issuance applied to this project. (Please list verbatim.) The project site is in the Newport Coastal Streams Watersheds and the water quality is currently listed by the State of California (Approved 2010 303(d) listed Water Bodies & Associated POC) as impaired by the pollutant of Indicator Bacteria. &RQFHSWXDO:403 Was a Conceptual Water Quality Management Plan previously approved for this project? No :DWHUVKHG%DVHG3ODQ&RQGLWLRQV Provide applicable conditions from watershed - based plans including WIHMPs and TMDLS. TheNewportCoastalStreamsWatershedcovers7.77squaremiles, chieflyintheunincorporatedareabetweentheNewportBeachand LagunaBeach.NewportCoastandMuddyCreek,itsmaintributaries, draintheSanJoaquinHills.Therearetworeceivingwaterbodies, MorningCanyonCreek&BuckGullyCreek,inthiswatershed. However, the Pacific Ocean is the downstream receiving water body from the project site (see attached MS4 Map), which is not potentially susceptible to hydromodification impacts. PA2022-042 71!:,:,0. ....... ....... 11.000· 15.000• -12.000• Arr., Ufflltffl'd •.~J l~ l I 3-,CO,. 97294Acres /& / (->-0 •--.._,_f•'\-•._\.~,~-ANA~BIM 1• .. t._.. .,_ ... , \ I ,/ ANAHlllJII ·---i ·-, ,--,., [ __ r:"" --" O.IIANGE r., ·, •-/ \. r:-.._/ ) ,.,_':."":.""../ \., VILLA t : .J PARK r,-I r~ -··'. ,.,;~ _,r \" + !r...,,•f hut. j '·Jr'.:! r . CAllDEN ! ,T17,.:;;__/ GROVE /'. ..... ' ', ·· ..... , ..... _r~ ~ ' ~-~ / '"----· (LJ __ ,. ; __ . .. ' l"'l:"~,,~1,1 I -.... ~ 'II -, , ---·-1 ; • I f ,, l :,{j SANTA l ANA -•'\. .. , ____ .J--~ FOUNTAIN r::// VALLEY f I -, -L., ? I -•-. <r"II Ai / ~ . ':: . .-.,. ) .f UNUICORPOP.ATED /LAGU~:.:~ BEAcr 1~ \ .. ~= .,..._ ---.,,_ ............ 0.. - '• , ........ LAGUNA HILLS WATERSHED: NEWPORT BAY COUNTY OF ORANGE, CALIFORNIA LAM>LISE -· Cormoldtl ...,..,.. P,blc R_ ..... =,\. ..., . -,_ '"" '" .., __ ........ ' :·1Cfty/Ccu,ty.bWr::tlon ----60r- ,/ MISSION VIEJO ~ ; I \ I I I ·, I /_~, l ,:; / L ----·"' ··--· ~--··- ~;;:;;;;;~' -·------..... -..... ----------~. • PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ// EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮ 6HFWLRQ,, 3URMHFW'HVFULSWLRQ ,, 3URMHFW'HVFULSWLRQ 'HVFULSWLRQRI3URSRVHG3URMHFW Development Category (From Model WQMP, Table 7.11-2; or -3): This is a Priority project. Project Area (ft2): 9115 Number of Dwelling Units: 1 SIC Code: 1521 Project Area Pervious Impervious Area (acres or sq ft) Percentage Area (acres or sq ft) Percentage Pre-Project Conditions 4276 s.f. 46.9% 4839 s.f. 53.1% Post-Project Conditions 2252 s.f. 24.7% 6863 s.f. 75.3% Drainage Patterns/Connections The existing on-site drainage patterns were listed as follows: The runoff over the existing driveway and sideyards drained as sheet flow toward Galaxy Drive. The entire area of rooftop runoff are collected and drained by area drains via the existing piping to curb drain at Galaxy Dr. Narrative Project Description: (Use as much space as necessary.) This project is a remodel and additions. The proposed configuration of the site contains the following: A single dwelling unit with the garage facing the Galaxy; A swimming pool in the rear of the house; The lot consists of a first floor, which is elevated at 2.5 feet above the flow line of Signal Road. . . . . --·--·--·•·•·•-·•-·•-·•·•·•-·•-·•-·•·•·•-·•-·•-·•·•·•-·•-·•-·•·•·•-·•-·•-·•·· -------------------------------------------------------------------- --...... -. -. -. --- -- ------ -- --......................... - !1.------------------------------------·· ................................ !L -••• -••••• -••••••• -• -• -• -• ---- ---------------------------------- PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ// EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϯ ,, 3RWHQWLDO6WRUPZDWHU3ROOXWDQWV 3ROOXWDQWVRI&RQFHUQ Pollutant Check One for each: E=Expected to be of concern N=Not Expected to be of concern Additional Information and Comments Suspended-Solid/ Sediment E N The receiving water body is Pacific Ocean Nutrients E N The receiving water body is Pacific Ocean Heavy Metals E N Pathogens (Bacteria/Virus) E N The receiving water body is Pacific Ocean Pesticides E N The receiving water body is Pacific Ocean Oil and Grease E N The receiving water body is Pacific Ocean Toxic Organic Compounds E N The receiving water body is Pacific Ocean. Trash and Debris E N The receiving water body is Pacific Ocean [8J □ [8J □ □ [8J [8J □ [8J □ [8J □ [8J □ [8J □ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ// EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϰ ,, +\GURORJLF&RQGLWLRQVRI&RQFHUQ Determine if streams located downstream from the project area are potentially susceptible to hydromodification impacts. No – Show map Yes – Describe applicable hydrologic conditions of concern below. The runoff from the site will be transported, via street curb & gutter, to the curbside inlet along Galaxy Drive and discharged to the Pacific Ocean via the existing storm drain.In other words, the runoff was directly discharged into the Pacific Ocean and no streams located downstream from the project area are potentially susceptible to hydromodification impacts. ,, 3RVW'HYHORSPHQW'UDLQDJH&KDUDFWHULVWLFV Describe post development drainage characteristics. ThepostǦdevelopmentonǦsiterunoffwillbecollectedandtransported,viaproposedpipingsystems, tothebioretentionandoverflowtocurbdrainsontheGalaxyDrive.Therunoffleavingthesitewill bedrained,viathestreetcurb&gutter,andcollectedbycatchbasinatGalaxyDrivebefore dischargingintothereceivingwaterbody"PacificOcean"directly. ,, 3URSHUW\2ZQHUVKLS0DQDJHPHQW Describe property ownership/management. □ PA2022-042 ~~~~!~lwl~Yro!~OdM~N ·AV~ !UO~MilN ~IA1\t'NW AJ.111~1.!.ciii!:)Sns '° 1i ~£ i "'= :c ,g :i c} ! j~ ::J e" s UJ CJ] -. -'i> f 0 ~ .. a !J .e .. ! ! i j.,, r < CJ] .. .. u C: a. C >, i € !] 2. CJ] .j I ~ i]. ~ €€ .! :. .,, ·~ E ~ 3: 0 i lt .; .... .a ~ e Ill al ~ ~ ~ C w w (I) .! u C .; 01 .. .. J.! I I ::, .:; II) u ... I!-j i .. "2 0 j C. ... ~ t I £ 0 0030NV~ t----:=~-1 ~INIOINl~1eg'j ij~.!l.'§'w!l!4! (0]3]1}{]$1!:i]3]JLl)i7.!1£ JUI.IN)f/1)(0):'j) 3]~1NJ\'11ltll@ ---I!. lt I~ g ! C CD PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ// EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϱ Eddie Chen is the property owner of this development and will be responsible for the maintenance of all on-site stormwater facilities during his ownership. PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH ^ĞĐƚŝŽŶ/// EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϲ 6HFWLRQ,,, 6LWH'HVFULSWLRQ ,,, 3K\VLFDO6HWWLQJ Fill out table with relevant information. Name of Planned Community/Planning Area (if applicable) Cliff Haven Community Association Location/Address 1424 Galaxy Drive Newport Beach, CA 92660 General Plan Land Use Designation RS-D Zoning R-1 Acreage of Project Site 0.209 Acres Predominant Soil Type Hydrologic Soil Group (HSG) D PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH ^ĞĐƚŝŽŶ/// EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϳ ,,, 6LWH&KDUDFWHULVWLFV 6LWH&KDUDFWHULVWLFV Precipitation Zone Design Capture Storm Depth (Inches) : 0.70 Topography The existing building area, including planters & walkways, is at a descending slope of about 2% toward Galaxy Drive.. Drainage Patterns/Connections The on-site drainage was drained as sheet flow toward area drains via sub drain piping system to the front of the site and transported off the site. Soil Type, Geology, and Infiltration Properties The on-site soil is HSG D, with limited infiltration capacity. The lot topography generally consists of a level graded building pad. The back of the building pad descends approximately 3.5 feet, over distances of about 10 to 15 feet, to the top of an existing retaining wall at the northeast property line. The exposed height of the retaining wall varies from approximately 4 to 10 feet along the rear (northeast side) of the lot. Immediately beyond the northeast property line is an approximate 100-foot bluff slope which descends to the Newport Back Bay along the east property boundary. The overall bluff slope gradient varies from approximately 1:1 to 1.5:1 (horizontal:vertical). Our findings indicate that the back yard is underlain by wall backfill, landslide repair fill, concrete and steel tiebacks and possibly fill soil placed as part of the former lot development. The locations of the buried tiebacks were not determined as part of our investigation. Hydrogeologic (Groundwater) Conditions Groundwater was not observed in the exploratory borings at the time of the investigation. Although not encountered in the borings, groundwater may develop along the contact between permeable terrace deposits and the less permeable underlying bedrock or silt layers within the deposits as a result of rainfall, irrigation and seepage from uphill properties. Groundwater seepage is not anticipated to be a significant design or construction constraint, provided proper surface drainage and subdrainage systems are incorporated into the project; however, the presence of groundwater in deeper caisson borings during construction is possible and may promote caving in caisson excavations. PA2022-042 l I ., I ~ , .... -·~ LEGEND o Orange County Prec,pitalion Station• --24 Hour, 85111 Percentile Rainfall (Inches) ·--24 Hour, 85111 Percentile Rainfall (Inches)-Ext'ap:>lated cJ City Boundaries •I Rainfall Zones Design Capture Stonn Depth finches) g o.65" a o.7 □0.75 [_J0.80 C"]0.85 c::J 0.90 a o.95 131.00 -1.10" Noto Eventl dollned H 2-U!ow :H.'.lrioclo (calOnclllr dlyt) Wlh groalef then 0.1 lnchH of rm,,,. For ar ... oli:IMde of avab~ dall cxw~c. pro~ judgment ......... .- i I &.1 ™ ~ 2 ...a ..II ~ ~ ~ &: !Y ~~ ~a&=, ~e=t~ © :ii l!!Jl g~~ l!!ll .Jl ~ «, «g g ;.g !.! 8; ~i © fih ~ ~ 8 w I i J " o, (WI ~II ( ~I ~ l1~~~•~~•5~i•~~~~3f•;-;·~"-----j~~~-----J[~l-----~~L.J,_ _____ ~~-_:y_""-_-==-~~Lz:1::;;.. ___ ..Ju.;·!..J•,11 ______ ~---- ! ~ -~==::i:---; "'"' ' ,,.,,,: -~-~ . ~ V ,, ~ t ., ... ~ • ,. •• I• l. , ~ ...... XVl-1 PA2022-042 ~cllilO!:·~ ~1fC£ :l 00~ CHO.AH ~~.\ll '0:) 30l<Vli0 r-----;;=--1 Altill!U.$ IM(l)l.!l.~WilO~INJO MIMO"n(l)~ il,n.Jllw~IC) I (ii JI PA2022-042 ~ ~~1Sl ~-~ ~~",! ':: ; tdiU r-ff"Orl~ 1109 ::.r~o,~~i.'JAK V:J 0::>30NVllO AIOJ«'ilJL~ ~@!.Jl.l.'t'a:a.Jl.1i=JINJO A.U~a'il())~ 3l~i'-JIW()) f l ..0 N I -> I >< PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH ^ĞĐƚŝŽŶ/// EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϴ Geotechnical Conditions (relevant to infiltration) On-site water infiltration is not recommended due to potential for future seepage and perched water in basement. Surface and subsurface drainage should be directed toward approved outlets. Off-Site Drainage No obvious evidence of erosive discharge onto or from the site was noted. Utility and Infrastructure Information Not any underground utilities and/or infratures exist on site. ,,, :DWHUVKHG'HVFULSWLRQ Receiving Waters Newport Coastal Streams 303(d) Listed Impairments DDT (Dichlorodiphenyltrichloroethane), Dieldrin , and PCBs Applicable TMDLs Not available until 2019 Pollutants of Concern for the Project Pathogens , Oil & Grease, metal copper Environmentally Sensitive and Special Biological Significant Areas N/A PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϵ 6HFWLRQ,9 %HVW0DQDJHPHQW3UDFWLFHV%03V ,9 3URMHFW3HUIRUPDQFH&ULWHULD (NOC Permit Area only) Is there an approved WIHMP or equivalent for the project area that includes more stringent LID feasibility criteria or if there are opportunities identified for implementing LID on regional or sub-regional basis? YES NO If yes, describe WIHMP feasibility criteria or regional/sub-regional LID opportunities. □ ~ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϭϬ 3URMHFW3HUIRUPDQFH&ULWHULD If HCOC exists, list applicable hydromodification control performance criteria (Section 7.II-2.4.2.2 in MWQMP) Since HCOC does not exist so hydromodification will not be considered. List applicable LID performance criteria (Section 7.II-2.4.3 from MWQMP) Priority projects must infiltrate, harvest and re- use, evapotranspire, or bio/biofilter the 85th percentile, 24-hour storm event (design capture volume). List applicable treatment control BMP performance criteria (Section 7.II-3.2.2 from MWQMP) Calculate LID design storm capture volume for Project. Volume-based BMP = 322 CF for DMA 1 (6863 s.f.) Lot = 9115 s.f. Impervious = 6863/9115= 0.753 C=0.75*0.753+0.15=0.715 DCV=0.715*0.7/12*9115= 380 CF DMA1: DCV1 = 380 CF PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϭϭ ,9 6LWH'HVLJQDQG'UDLQDJH Volume-based BMPs Sizing: The runoff of DMA1, which include rooftops and hardscape, will be collected by the multiple area drains via pipe, conveying runoff to infiltration trenches. The runoff over the rear landscaping area DMA2, undisturbed area, will be drained on existing natural process percolation/infiltration. Attached are DMAs and associated DCV to be mitigated by the proposed BMPs: Description of Drainage Management Area (DMA) Area (S.F.) Design Capture Volume (DCV) Proposed BMPs Discharge Locations Rooftops and Hardscape (DMA1) 6863 380 CF Bioretentionwith underdrainOn site DMA1: Impervious = 6863/9115= 0.753 C=0.75*0.753+0.15=0.715 DCV=0.715*0.7/12*9115= 380 CF DMA1: DCV1 = 380 CF GIS BMP COORDINATE:33.628584434316984, -117.89089167250589 ,9 /,'%036HOHFWLRQDQG3URMHFW&RQIRUPDQFH$QDO\VLV Each sub-section below documents that the proposed design features conform to the applicable project performance criteria via check boxes, tables, calculations, narratives, and/or references to worksheets. PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϭϮ ,9 +\GURORJLF6RXUFH&RQWUROV+6&V If required HSCs are included, fill out applicable check box forms. If the retention criteria are otherwise met with other LID BMPs, include a statement indicating HSCs not required. 1DPH,QFOXGHG" Localized on-lot infiltration Impervious area dispersion (e.g. roof top disconnection) Street trees (canopy interception) Residential rain barrels (not actively managed) Green roofs/Brown roofs Blue roofs Impervious area reduction (e.g. permeable pavers, site design) Other: vegated slope (undisturbed) on-lot infiltration Other: Other: Other: Other: Other: Other: Other: tŽƌŬƐŚĞĞƚ/͗^ƵŵŵĂƌǇŽĨ'ƌŽƵŶĚǁĂƚĞƌͲƌĞůĂƚĞĚ&ĞĂƐŝďŝůŝƚǇƌŝƚĞƌŝĂ ,VSURMHFWODUJHRUVPDOO"DVGHILQHGE\7DEOH9,,, FLUFOHRQH/DUJH6PDOO :KDWLVWKHWULEXWDU\DUHDWRWKH%03"$ DFUHV :KDWW\SHRI%03LVSURSRVHG"ELRUHWHQWLRQ :KDWLVWKHLQILOWUDWLQJVXUIDFHDUHDRIWKHSURSRVHG%03"$%03 VTIW □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ u PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϭϯ tŽƌŬƐŚĞĞƚ/͗^ƵŵŵĂƌǇŽĨ'ƌŽƵŶĚǁĂƚĞƌͲƌĞůĂƚĞĚ&ĞĂƐŝďŝůŝƚǇƌŝƚĞƌŝĂ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u ,,--...__ u ( ) ( ) -- PA2022-042 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6XPPDUL]HILQGLQJVRIVWXGLHVSURYLGHUHIHUHQFHWRVWXGLHVFDOFXODWLRQVPDSVGDWDVRXUFHVHWF3URYLGH QDUUDWLYHGLVFXVVLRQRIVWXG\GDWDVRXUFHDSSOLFDELOLW\ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϭϲ dĂďůĞϮ͘ϳ͗/ŶĨŝůƚƌĂƚŝŽŶDW&ĞĂƐŝďŝůŝƚǇtŽƌŬƐŚĞĞƚ;ĐŽŶƚŝŶƵĞĚͿ Partial Infeasibility Criteria Yes No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,IDOODQVZHUVWRURZVWKURXJKDUHQRLQILOWUDWLRQRIWKHIXOO'&9 LVSRWHQWLDOO\IHDVLEOH%03VPXVWEHGHVLJQHGWRLQILOWUDWHWKHIXOO '&9WRWKHPD[LPXPH[WHQWSUDFWLFDEOH 1R PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϭϴ ,9 ,QILOWUDWLRQ%03V Identify infiltration BMPs to be used in project. If design volume cannot be met, state why. 1DPH,QFOXGHG" Bioretention without underdrains Rain gardens Porous landscaping Infiltration planters Retention swales Infiltration trenches 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 is not feasible per soil report recommendation. □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϭϵ tŽƌŬƐŚĞĞƚ:͗^ƵŵŵĂƌǇŽĨ,ĂƌǀĞƐƚĞĚtĂƚĞƌĞŵĂŶĚĂŶĚ&ĞĂƐŝďŝůŝƚǇ :KDWGHPDQGVIRUKDUYHVWHGZDWHUH[LVWLQWKHWULEXWDU\DUHDFKHFNDOOWKDWDSSO\ 7RLOHWDQGXULQDOIOXVKLQJ[ /DQGVFDSHLUULJDWLRQ[ 2WKHUBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBƑ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¶G [DF DF $UHDRILUULJDWLRQDFRIWKHSURMHFWVLWHLVWREHFRQVLGHUHGLQIHDVLEOHIRUKDUYHVWLQJDQGUHXVHV\VWHP WKDWPHHWVWKHPLQLPXPUHTXLUHPHQWIRUSDUWLDOFDSWXUH PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϬ ,9 (YDSRWUDQVSLUDWLRQ5DLQZDWHU+DUYHVWLQJ%03V If the full Design Storm Capture Volume cannot be met with infiltration BMPs, describe any evapotranspiration and/or rainwater harvesting BMPs included. 1DPH,QFOXGHG" All HSCs; See Section IV.3.1 Surface-based infiltration BMPs Biotreatment 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. Harvesting and re-use system will not be considered due lack of minimum required landscape area. I I □ □ □ □ [8J □ □ □ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϭ ,9 %LRWUHDWPHQW%03V If the full Design Storm Capture Volume cannot be met with infiltration BMPs, and/or evapotranspiration and rainwater harvesting BMPs, describe biotreatment BMPs included. Include sections for selection, suitability, sizing, and infeasibility, as applicable. 1DPH,QFOXGHG" Bioretention with underdrains 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: 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= 9115 s.f.; Roof Top and Hardscape area = 6863 s.f Impervious = 6863/9115= 0.753 C=0.75*0.753+0.15=0.715 DCV=0.715*0.7/12*9115= 380 CF Bioretention with underdrain is selected to mitigate DCV1 (380 cf). See calculation next page. Soil Amended Specification shall have infiltration rate of 2.5 in/hr. ~ □ □ □ □ □ □ □ □ □ □ PA2022-042 SectionIV*DOD[\'U NorthOCPriorityWQMPTemplateAugust172011 Page2ϬĂ PriorityonProjectWaterQualityManagementPlan(WQMP) &KHQ5HVLGHQFH WorksheetC:CaptureEfficiencyMethodforVolumeͲBased,ConstantDrawdownBMPs Step 1: Determine the design capture storm depth used for calculating volume 1 Enter design capture storm depth from Figure III.1, d (inches) d= .70 inches 2 Enter calculated drawdown time of the proposed BMP based on equation provided in applicable BMP Fact Sheet, T (hours) T= 7.2 hours 3 Using Figure III.2, determine the "fraction of design capture storm depth" at which the BMP drawdown time (T) line achieves 80% capture efficiency, X1 X1=0.40 4 Enter the effect depth of provided HSCs upstream, dHSC (inches) (Worksheet A) dHSC= n/a inches 5 Enter capture efficiency corresponding to dHSC,Y2 (Worksheet A)Y2= n/a % 6 Using Figure III.2, determine the fraction of "design capture storm depth" at which the drawdown time (T) achieves the equivalent of the upstream capture efficiency(Y2),X2 X2= n/a 7 Calculate the fraction of design volume that must be provided by BMP,fraction = X1 - X2 fraction= 0.40 8 Calculate the resultant design capture storm depth (inches), dfraction= fraction × d dfraction= 0.28 inches Step 2: Calculate the DCV 1 Enter Project area tributary to BMP (s), A (acres) A= 0.acres 2 Enter Project Imperviousness, imp (unitless) imp= 3 Calculate runoff coefficient, C= (0.75 x imp) + 0.15 C= 4 Calculate runoff volume, Vdesign= (C x drfraction x A x 43560 x (1/12))Vdesign=cu-ft Supporting Calculations Describe system: Enclosed Planter Box w/ ” ponding depth, 3” mulch layer,” of top soil/planting mix, over pea gravel w/ a 4” diameter underdrain pipe. Total Planter per figure II in Section VI of WQMP = A= Vdesign/ Ponding Depth (dp) =cf/ ft = sq. ft. Area provided = s.f.!! s.f.2.%LRUHWHQWLRQZLWKXQGHUGUDLQLVVHOHFWHGWRPRWLJDWH'&9FI Provide drawdown time calculations per applicable BMP Fact Sheet: DD = (dp/Kmedia)*12 in/ft = (1.5/2.5) *12 = 7.2 hours Kmedia = 2.5 in/hr per TGD Appendix XIV-53 20aD PA2022-042 TECHNICAL GUIDANCE DOCUMENT APPENDICES III-11May 19, 2011 Figure III.2. Capture Efficiency Nomograph for Constant Drawdown Systems in Orange County 20b100% I ~~~i?i:l~-~ b:. ~J. ~ 1 I 90% 80% 70% -.>-u, C .% .!!! 60 •' u, ~ W 500J' _c____J,. f' I ' . w: f 1 -6:_~_J____, -' ~ I ~ . . I ~ l I I , . -,01 --r--1 -.t :.i ,-T .I' ~FT""7r~ W _,,,.-■ · ~ , (, ,cu, a.;., ::,: a 40% ,n:,: ,u, 30% 20% 1 Q,%, oom, D.0 0.2 0.4 0,16 0.8 1.0 1 .2 1 .4 1.6 1 .8 2.0 Fraction of Design Capture Sto.rm Depth DrawdcrWn Time 1-hr -2-hr --3-hr 6~hr ~12-hr 24-hr 3S.hr 48-hr -72~hr -+-96-hr ~120 .. hr -t--180~hr -1-240-hr 360 .. hr 480-hr 720-hr □ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϮ ,9 +\GURPRGLILFDWLRQ&RQWURO%03V +\GURPRGLILFDWLRQ&RQWURO%03V %031DPH%03'HVFULSWLRQ N/A ,9 5HJLRQDO6XE5HJLRQDO/,'%03V Describe regional/sub-regional LID BMPs in which the project will participate. Refer to Section 7.II- 2.4.3.2 of the Model WQMP. 5HJLRQDO6XE5HJLRQDO/,'%03V Not Available PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϯ ,9 7UHDWPHQW&RQWURO%03V 7UHDWPHQW&RQWURO%03V %031DPH%03'HVFULSWLRQ N/A PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϰ ,9 1RQVWUXFWXUDO6RXUFH&RQWURO%03V 1RQ6WUXFWXUDO6RXUFH&RQWURO%03V ,GHQWLILHU1DPH &KHFN2QH,IQRWDSSOLFDEOHVWDWHEULHI UHDVRQ,QFOXGHG1RW $SSOLFDEOH N1 Education for Property Owners, Tenants and Occupants N2 Activity Restrictions N3 Common Area Landscape Management This is a residential development N4 BMP Maintenance N5 Title 22 CCR Compliance (How development will comply) This is a residential development N6 Local Industrial Permit Compliance This is a residential development N7 Spill Contingency Plan This is a residential development N8 Underground Storage Tank Compliance This is a residential development N9 Hazardous Materials Disclosure Compliance This is a residential development N10 Uniform Fire Code Implementation N11 Common Area Litter Control This is a residential development N12 Employee Training This is a residential development N13 Housekeeping of Loading Docks This is a residential development N14 Common Area Catch Basin Inspection This is a residential development N15 Street Sweeping Private Streets and Parking Lots This is a residential development N16 Retail Gasoline Outlets This is a residential development □ 1'••················· ------------------------------------------------------....... ~ ....... ""'"'□"""" □ ....... ~ .............. □"""" i'••················· ------------------------------------------------------. . . . . . . . . . . . . . . . . . .................. . □ □ i'••················· ------------------------------------------------------. . . . . . . . . . . . . . . . . . .................. . □ i'••················· ------------------------------------------------------. . . . . . . . . . . . . . . . . . .................. . □ □ 1'••················· ------------------------------------------------------....... ~ ....... ""'"'□"""" □ □ i'••················· ------------------------------------------------------. . . . . . . . . . . . . . . . . . .................. . □ □ □ i'••················· ------------------------------------------------------. . . . . . . . . . . . . . . . . . .................. . □ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϱ N1. Education for Property Owners, Tenants and Occupants Educational handouts will be prepared and given to property owner, Medhi Karimpour, for his file and reference. Property will share these materials with others in his family. N2. Activity Restriction Some activities, such as painting, oil change, hazardous material use, etc., will be restricted on site and covered in the educational handouts. Property owner’s family shall be made aware of these restrictions. N4. BMP Maintenance Owner or his maintenance contractor will be responsible for BMP inspection and maintenance activities. The criteria for maintenance repair or replacement, including frequency and responsibility, are shown in Section V. The owner shall also create his inspection log sheets in order to document BMP maintenance activities. N10. Uniform Fire Code Implementation The discharge of any waste liquid containing crude petroleum or its products “into or upon” any drainage canal or ditch, storm drain, sewer, or upon the ground within the site is prohibited. PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϲ ,9 6WUXFWXUDO6RXUFH&RQWURO%03V Fill out structural source control check box forms or provide a brief narrative explaining if structural source controls were not used. 6WUXFWXUDO6RXUFH&RQWURO%03V ,GHQWLILHU1DPH &KHFN2QH,IQRWDSSOLFDEOHVWDWHEULHI UHDVRQ,QFOXGHG1RW $SSOLFDEOH S1 Provide storm drain system stenciling and signage No storm drains inlets present near the site S2 Design and construct outdoor material storage areas to reduce pollution introduction This is a residential lot. S3 Design and construct trash and waste storage areas to reduce pollution introduction This is a residential lot. S4 Use efficient irrigation systems & landscape design, water conservation, smart controllers, and source control S5 Protect slopes and channels and provide energy dissipation No slopes & channel present near the site Incorporate requirements applicable to individual priority project categories (from SDRWQCB NPDES Permit) S6 Dock areas This is a residential lot. S7 Maintenance bays This is a residential lot. S8 Vehicle wash areas This is a residential lot. S9 Outdoor processing areas This is a residential lot. S10 Equipment wash areas This is a residential lot. S11 Fueling areas This is a residential lot. S12 Hillside landscaping This is a residential lot. S13 Wash water control for food preparation areas This is a residential lot. S14 Community car wash racks This is a residential lot. S4. Use efficient irrigation systems & landscape design, water conservation, smart controllers, and source control The proposed irrigation systems are designed to meet each landscape area’s specific water requirement. The owner or his maintenance staff will adjust the timing and application methods of irrigation water, when needed, to minimize the runoff of excess irrigation water into the municipal storm drain system. I C=r=J □ igJ □ igJ □ igJ igJ □ □ igJ □ igJ □ igJ □ igJ □ igJ □ igJ □ igJ □ igJ □ igJ □ igJ □ igJ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϳ ,9 $OWHUQDWLYH&RPSOLDQFH3ODQ,I$SSOLFDEOH Describe an alternative compliance plan (if applicable). Include alternative compliance obligations (i.e., gallons, pounds) and describe proposed alternative compliance measures ,9 :DWHU4XDOLW\&UHGLWV Determine if water quality credits are applicable for the project. 'HVFULSWLRQRI3URSRVHG3URMHFW Project Types that Qualify for Water Quality Credits (Select all that apply): Redevelopment projects that reduce the overall impervious footprint of the project site. Brownfield redevelopment, meaning redevelopment, expansion, or reuse of real property which may be complicated by the presence or potential presence of hazardous substances, pollutants or contaminants, and which have the potential to contribute to adverse ground or surface WQ if not redeveloped. Higher density development projects which include two distinct categories (credits can only be taken for one category): those with more than seven units per acre of development (lower credit allowance); vertical density developments, for example, those with a Floor to Area Ratio (FAR) of 2 or those having more than 18 units per acre (greater credit allowance). Mixed use development, such as a 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). Transit-oriented developments, such as a 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 Redevelopment projects in an established historic district, historic preservation area, or similar significant city area including core City Center areas (to be defined through mapping). Developments with dedication of undeveloped portions to parks, preservation areas and other pervious uses. Developments in a city center area. Developments in historic districts or historic preservation areas. Live-work 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 both categories. In-fill projects, the conversion of empty lots and other underused spaces into more beneficially used spaces, such as residential or commercial areas. Calculation of Water Quality Credits (if applicable) Not Applicable □ □ □ ·o ················· ·······················--------'----~□ □ □ PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶ/s EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭWĂŐĞϮϴ ,9 $OWHUQDWLYH&RPSOLDQFH3ODQ,QIRUPDWLRQ Not Applicable 6HFWLRQ9 ,QVSHFWLRQ0DLQWHQDQFH5HVSRQVLELOLW\IRU%03V %03,QVSHFWLRQ0DLQWHQDQFH %035HSRQVLEOH 3DUW\V ,QVSHFWLRQ 0DLQWHQDQFH $FWLYLWLHV5HTXLUHG 0LQLPXP )UHTXHQF\RI $FWLYLWLHV Bioretention with underdrain Property owner Check for any clogging & remove any sediment deposit, debris, mulch & trash Twice a year or as needed or before each major storm event if occurs frequently. PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶs/ EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭ WĂŐĞϮϵ 6HFWLRQ9, %03([KLELW6LWH3ODQ 9, %03([KLELW6LWH3ODQ 9, 6XEPLWWDODQG5HFRUGDWLRQRI:DWHU4XDOLW\0DQDJHPHQW3ODQ Following approval of the Final Project-Specific WQMP, three copies of the approved WQMP (including BMP Exhibit, Operations and Maintenance (O&M) Plan, and Appendices) shall be submitted. In addition, these documents shall be submitted in a PDF format. Each approved WQMP (including BMP Exhibit, Operations and Maintenance (O&M) Plan, and Appendices) shall be recorded in the Orange County Clerk-Recorder’s Office, prior to close-out of grading and/or building permit. Educational Materials are not required to be included. PA2022-042 PA2022-042 . , I • ...,..,.,_,.,_,,,. ' '--. -----~------(.,: ' ' '"~ C ;.; -I\ •· L { t . ~ ~ ~-~ [>~ AREA OMA 1 (ROOFTOP + HARDSCAPE) = 6,863 S.F . ~ ■' ... ""'"~~~~ L I.:>,./ ) "!'> . . ~I' I -;\ --" .. 1 ' • ~ -r----, _:_-" 7.~~~-·· '-.. I -,: ,_ • i: lll r: ..; It:' 4 • ·< C::' --. 0 •. 8' ' 15• "$· --_ _i__ '. ,.,,.. ,. _,., " ·,, GRAPHIC SC.'L[· 1/8"=1 '-0" ----~------~---' Nl.!:J1'.!!!.W I • DRIVE --,..,.,.,..~ ----· --------= • ~ I -I RCOMU[~E~N~ ~~ TT I-~ 1-~~-·- ,...,;;._;.;.;_M---..,.!;11\ .JQHN!I_..,, . --~ CITY OF NEWPORT BEACH. BUlDING DllllSION •CM:Cll'4lOl'H -N,oOi.ir.,t,.I ... 1....... I 1--GAADNGl'EltHnNUMBEt: LEGEf\D CENTER LIN[ PROPERTY LINE FS(37.00) EXISTING ELEVATION 37,00 FS PROPOSED clE\IATION DRAINAGE AREA FOR 142-4 GALAXY DR NEWPORT BEACH, CA 92660 1E. 71-4.717.1-418 -- D.1 SHEET OF 6 PA2022-042 I: .;-, [--' . • ,.,-,._J ( •~ .. :'"" .. ,IP> I - j J, It -----'.c,J ,1 --~..._ t ""ie¢i --· - ~TV ,.,_ ]', 1' ,1 ( li c;., ; .. BMP'S ~I ' 'i I 0 BIORETENTION WITH JNDERDRAIN (77 s.r.) I I ---, ---_t __ I i11 {' I JJ-' ---I ,. -=---'---,-. I ;fl.:----1· - ---•• -~ -~ 7-, : ' . -• Ill ~I ,t' 0-4, 8---;-----·-,6, 24' ' G ~ , t w$• • ------'------\....:-------~ ,..~ •• s GRAPHIC SCI-LE: 1/8"=1'-0" DRIVE----_....."'nJ:.i ------. ----=- T REVISIONS I I I I I I ~75';-:-, ~ ..... ~E~F I I l I JT CONSUL nNG ENGINEERS ___ .,. ~£!_!!_EWPORT BEACH. BULDING Dli~ION -""'°"~- GMOING,W,,nN\JMIEI!: LEGH,D CENTER LINE PROPERTY LINE fS(37.00) EXISTING ELEVATION 37.oo rs PROPOSED ,LEVATION BMPs PLAN FOR 1 •2• GALAXY DR NEWPORT BEACH. CA 92660 TB. 71◄,717.1•18 ~ D.2 StEIT OF 5 PA2022-042 WƌŝŽƌŝƚǇŽŶWƌŽũĞĐƚtĂƚĞƌYƵĂůŝƚǇDĂŶĂŐĞŵĞŶƚWůĂŶ;tYDWͿ &KHQ¶V5HVLGHQFH *DOD[\'ULYH^ĞĐƚŝŽŶs// EŽƌƚŚKWƌŝŽƌŝƚǇtYDWdĞŵƉůĂƚĞƵŐƵƐƚϭϳϮϬϭϭ WĂŐĞϯϬ 6HFWLRQ9,, (GXFDWLRQDO0DWHULDOV 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. (GXFDWLRQ0DWHULDOV 5HVLGHQWLDO0DWHULDO KWWSZZZRFZDWHUVKHGVFRP &KHFN,I $SSOLFDEOH %XVLQHVV0DWHULDO KWWSZZZRFZDWHUVKHGVFRP &KHFN,I $SSOLFDEOH 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 Water Use Proper Maintenance Practices for Your Business Household Tips 2WKHU0DWHULDO&KHFN,I $WWDFKHGProper 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 ~ □ □ □ ~ □ ~ □ ~ ~ □ □ ~ □ □ □ □ □ ~ □ □ □ ~ □ □ □ ~ □ ~ □ □ □ ~ □ □ □ PA2022-042