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HomeMy WebLinkAbout96.Item 6 PPP Administration 09-13-17 - Urban Runoff ProgramURBAN RUNOFF DIVERSION PROGRAM ENVIRONMENTAL SERVICES DEPARTMENT MARK KAWAMOTO ENGINEERING SUPERVISOR RESOURCE PROTECTION DIVISION DIVERSION BACKGROUND Huntington Beach Newport Beach 1.Beach Closures Due To Bacteria 2.Selenium TMDL WHY DIVERT URBAN RUNOFF? Peters Canyon Diversion 1St Street Diversion Adams Diversion (Huntington Beach) WHY DIVERT URBAN RUNOFF? High Bacteria Levels Close Beaches Current Urban Runoff PolicyResolution No. OCSD 13-09 •10 MGD Maximum Flow •No Additional Cost •Only if Capacity Is Available •No Wet Weather Discharges •Policy Addresses Public Health or Environmental Problem OCSD’s PARTNERS •Orange County Public Works Santa Ana River, Huntington Beach Channel, Greenville Channel •City of Huntington Beach Adams, Atlanta, Banning, Flounder, Hamilton, Indianapolis, Meredith, Newland, Scenario, Yorktown and 1st Street CDS •City of Newport Beach Big Canyon, Newport Dunes, Mid Big Canyon •Irvine Ranch Water District Los Trancos Canyon, Muddy Canyon, Peters Canyon •PH Finance (Pelican Hill Resort) Pelican Point Program Administration •OCSD coordinates with O.C. Watersheds (Technical Advisory Committee) •OCSD and Permittee execute an Agreement for Dry Weather Urban Runoff •Dry Weather Urban Runoff Discharge Permit issued for each diversion Diversion Locations Discharge to Plant 1 Dry Weather Urban Runoff Quality •Routine Monitoring Both OCSD and Permittees •Very Good Compliance Record Heavy metals, oil & grease, malathion, and TTOs (chloroform, toluene) at near detection limit concentrations •Occasional Sulfide Exceedances Impact •Summer Dry Weather -97% of sites score A and B grades•Winter Dry Weather -93% of sites score A and B grades•Wet Weather –44% of sites score A and B grades(down from 5-year average of 60%) Location Summer Dry Winter Dry Wet Weather Brookhurst Street A B B Crystal Cove State Beach A+A+A+ Huntington Street A+A C Magnolia Street A A A Muddy Canyon Beach A+A+A Newport Dunes – 4 monitoring locations A A+F Pelican Point Beach A+A+A+ Santa Ana River Mouth A A C Honor Award Recipient PROGRAM at a GLANCE ENVIRONMENTAL SERVICES DEPARTMENT QUESTIONS? URBAN RUNOFF DIVERSION PROGRAM