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HomeMy WebLinkAboutCitywide Urban Runoff Management Plan - CURMP Cf Y GF Oti F✓CACti, CA r 1_ nU' JHIV { t1 i r JC City of Huntington Beach Department of Public Works Citywide Urban Runoff Management Plan (CURMP) January 18, 2005 � <M n e Talbert Lake CURMP Funding ftrr �d from the State Water Board Proposition 13 funding to develop a Citywide Urban Runoff Management Plan, including a Drainage & Water Quality Elements Consultant Team CDM Psomas � A ■Hromadka & Associates a p p" 1 What is Urban Runoff? Dry Weather Flows: . Permitted discharges ■ M owa a nuisance runoff — Landscape irrigation — Non-commercial vehicle washing IMAM- - De-chlorinated swimming pool a discharges ■ Illegal discharges/spills/dumping Wet Weather Flows (Rainfall / Stormwater� � . Intermittent and seasonal . Low flow, frequent events typically focus of WQ management NOM ■ High flow, low frequency events focus of drainage and flood hazard _ Urban Runoff Concerns --QuMt ■ Nuisance ■ Property damage ■ Public health & safety ■ Quality ■ Human health impacts ■ Affects on aquatic resources and habitat ■ Recreational/aesthetic impacts ■ City image & economic impacts s j t� r r Huntington ;r � "71% Beach 0. ram= i_ is Legend Yr� -�� � �,♦:: ---- City Boundary a r� -- Regional Watershed Boundary'%, E♦ C:Westminster D:Talbort/Greenville Banning Channel E:Lower Santa Ana River Runoff to local receiving waters from beyond HB 2-3 times amount from within HB Regulatory Controls V ermQ, wa[ Water Quantity ■ Federal Clean ■ Orange County Water Act - Flood Control NPDES Permit Manual ■ TMDL Process ■ FEMA ■ Waste Discharge ■ City Standards Requirements ■ Ocean Plan 3 Water Quality Focus Group ■ Current and former City Council Members ■ Representatives from: ■ Orange County Coastkeeper ■ Chamber of Commerce/Development Community ■ Public Works Commission/SE HB Neighborhood Association ■ City Staff ■ Public Works ■ Planning CURMP Components I ■ Drainage Element Drainage Element N city-Witte ('I B Urban Runoff ' Management Plan _ j i City ofII Iluntmgton Ruch _ = — ■ Water Quality r p Water Quality Element pElement r '�l i 4 CURMP Goals ■ Protect public health & safety ., ■ Profeff ana enhance beneficial uses ■ Reduce pollutants & urban runoff flow rates ■ Comply with state & federal regulations ■ Integrate WQ & drainage planning activities ■ Improve regional solutions ■ Position City for grant funding Water Quality Element Components ' Arogram/m is r trt n 71 �It wide So:urceControl 4 T 1 ■-Pr ram110 New P y am0e menu I 'z h al I Ma mQuMIi- Panning Area Bated Irogra�ns ands I n UP -__:I t-- Weto 4ua7rty Magaraeot ProNrrr�` � __ 5 City-Wide Source Control Programs Program Components Participants Tools City-wide Source Control City Staff Staff Legal Authority Residents Equipment Litter Control ~� -Businesses -0&M S Illegal Connection Coritractors Education/Training Illicit Discharge Tourists Ordinances/Enforcement -Industrial/Commercial Public Education/Outreach Municipal Facilities W Y ■ Primarily Permit-required, mandatory programs ■ Update in some programs to meet new Permit ■ Consider several discretionary enhancements ■ Example — Increased street, alley, parking area cleaning New Development/Redevelopment Program ■ Incorporate WQ design standards in zoning codes, Municipal Code, and other planning documents ■ Develop WQ standards and specifications ■ Update the Local Coastal Plan & CEQA handbook ■ Develop preliminary WQMP template ■ Refine treatment BMP requirements ■ Increase/enhance training for planning staff 6 Water Quality Planning Area Based Programs & Projects Program Components Participants Tools Water Quality Planning Area City Public Works, Capital$ Based Programs&Projects Planning,and -0&M$ Specific Projects _- other staff Land Taigeted Source Control ; -County City Staff e Other Cities Grants/Loans -' 77 ♦ Discretionary measures — not currently required by Permit ♦ Take advantage of opportunities ♦ Look for multiple use and regional participation _ - r i I 1 � 7 Drainage Element erfgrm2d by Wogic & hydraulic analyses on a complex computer modeling system ■ Developed a detailed inventory of existing storm water infrastructure ■ GPS/GIS storm water facilities mapping data collection & documentation ■ Calculates existing conveyance capacity ands peak flow rates ■ Documents targeted upgrades & recommends improvements Hydrologic Modeling ■ Count)-of Orange Hydrology Manual I�lei odology meets FEMA requirements ■ Used to determine the peak flows and capacity requirement ■ Model is a planning tool ■ Model inputs include: ■ Sub-area acreage ■ Soil type ■ Development type ■ Land use impervious factor 8 System Upgrade Summary ■ 131 total miles of City mainline s-ortw -r�arrn aerrffles ;- ■ 46 miles of facilities are candidates for upgrading r ) f ■ 39 miles of potential new systems in locations where stormdrain systems do not exist Next Stepsp • City Council adoption of CURMP • Up-date and Revise Current Development Drainage Fee • Review and Development of System-Wide Water Quality/Drainage Funding Solutions 9