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Home My WebLink About97.PPP Collection System 6-11-14Orange County Sanitation District Collection Facilities Nick Arhontes, P.E. Director Facilities Support Services Dept. Orange County Sanitation District, California www.ocsewers.com Administration Committee June 11, 2014 Orange County Sanitation District “We protect public health and the environment by providing effective wastewater collection, treatment, and recycling.” City Local SewerManhole PrivateLateral OCSDRegional Trunkline OceanOutfallOCSDTreatmentPlants Manhole To OCWD Wastewater Collection System 10-120” 8” Sewer Pipelines Owned and Maintained by OCSD 4” Up to 10 ft diameter regional sewer trunklines 397 miles Small diameter local sewers 175 miles total 572 miles Levels of Service for Collections •Sanitary Sewer Overflows (SSOs) •Odor complaints •Regulatory compliance –No NOVs •Respond to SSOs within 1 hour •Contain SSOs within 5 hours Regulatory Compliance •Sanitary Sewer System Wastewater Discharge Requirements State Water Resources Control Board (SWRCB) Water Quality Order No. 2006-0003 –May 2, 2006 •SCAQMD –Air Quality/Emissions •Cal OSHA -Safety •No Notice of Violations (NOVs) 0 2 4 6 8 10 12 14 2008-09 2009-10 2010-11 2011-12 2012-13 Q1 2013-14 Target < 13 Spills Annually 3 so far Sewer Spill Statistics per FY 2013-14 State State State State State Regional Regional Regional Regional Regional OCSD OCSD OCSD OCSD OCSD 0 5 10 15 20 25 FY2008-09 FY2009-10 FY2010-11 FY2011-12 FY2012-13 *Data from State Water Resources Control Board (CIWQS system) Spill Rate Averages (# spills/100 miles/year) 0 5 10 15 20 25 30 35 2009-10 2010-11 2011-12 2012-13 2013-14* 1st Quarter Collections Collections Target Future FY 14/15 Collections Target 12 Current Collections Target 34 Thru May Validated Odor Complaints by FY OCSD’s infrastructure must protect public health and the environment Collection System Asset Replacement Value = $3.054B Pipes & MHs 90% Structures 9% Mechanical 1% Electrical <1% Instrumentation <1% Pipes & Manholes 90% $2.753 Billion Thru FY 2011-12 Pump Station Examples Rocky Point Pump Station Bitter Point Pump Station Construction Cost: $9.2M Construction Cost: $20.2M Issues in the Collection System •Infiltration and inflow uses capacity •Odor and corrosion •Illegal discharges and pharmaceuticals •Blockages and spills •Fats, oils, & grease (FOG) •Rags, paper towels, wipes, food wrappers, solids, grit, etc. Inverted Siphon Cleaning Collections O&M Equipment Automating Manhole Inspection Reporting Dashboard Benefits •Streamlined process •Immediate access to the data •Fewer errors •View geographically •Easier to manage updates to devices •Staff buy-in •Cost-effective solution •Department Head loves the dashboard approach Sewage Conditioning •Helps reduce corrosion, odors, WWTP costs •8 Dosing stations •Continuous 4 trunks •Intermittent 7 trunks (SARI as needed) •Use 4 different chemicals Odor Panel –Olfactometry •Equipment at P1 •Public panel •After training, public testers helps determine threshold values •Also used to determine compound causing odor Source Inspection Program OCWD Residential Commercial Industrial Source Inspection Wastewater Treatment Ocean Release Water Reclamation Biosolids Recycling Industrial and Commercial User Charges Provides Revenue •Dye companies •Large food processors •Textile companies •Circuit board shops •Metal plating / finishers •Oil wells •Linen washing services •Wastehaulers 496 Permittees: Working Together ●Inspections –1,600/year ●Sampling –3,600/year ●Enforcements –120 actions/year Investigating FOG & Odors Respond to Odor Complaints Gas Hazard Investigations –Safety Food Wrappers & Non-Dispersibles Non-Dispersibles Study 21 Urban Runoff Diversions Pump Station Inspection Collecting Samples Evaluating Systems Source Inspection Program Networks •OC District Attorney Hazardous Materials Strike Force •OC Health Department •California Hazardous Materials Investigation Association (CHMIA) •State Water Resources Control Board (SWRCB) •Environmental Protection Agency Optimization thru Best Practices •Prior CA Collection Systems Collaborative Benchmarking Group 2000–2006 •CA Alliance for Sewer System Excellence 2011+ •Collections Systems Committees •Water Environment Federation (WEF) •California Water Environment Association (CWEA) •SO CA Alliance of Publicly Owned Treatment Works •OCSD Staff Regional Collaboration •Local area SSS WDR group 2002+ •SSO estimation, response training & assistance •County wide area spill control (CASC) •Street resurfacing coordination on MH frame & covers Sewer Debris Dumping Building Community Relationships& Workforce Development Only Flush 3 Ps www.What2Flush.com www.ocsewers.com Questions? Nick Arhontes, P. E. Director of Facilities Support Services Dept. 714.593.7210 narhontes@ocsd.com