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HomeMy WebLinkAbout06.a. (Handout) Accept the 2013 NPDES Annual Report(o.a, (HaadocuF) 2013 National Pollutant Discharge Elimination System Annual Report Alan R. Weer Plant Operations Division Manager January 23, 2014 Central Contra Costa Sanitary District 2013 NPDES Annual Report ➢ Total flow treated =13.1 billion gallons (13.7 billion in 2012) ➢ Average daily flow = 35.9 million gallons (37.6 million in 2012) Peak hourly flow = 67 million gallons per day (183 million in 2012) ➢ Ash disposal = 3,700 tons (wet weight for soil amendment; unchanged from 2012) 2013 NPDES Annual Report > CBODmon. avg. (mg/L) = 6.5 mg/L (Limit = 25 mg/L) > CBOD (% removal) = 97% (Limit = Minimum of 85 %) > TSSmon. avg. (mg/L) = 7.7 mg/L (Limit = 30 mg/L) > TSS (% removal) = 97% (Limit = Minimum of 85 %) > Bioassay (% survival) = 96.5% (Limit =11 sample median > 90 %) Treatment Plant > Completed Over 15,000 Analytical Tests > Approximately 11,000 Hours of Laboratory Work > 100 Percent Compliance with NPDES Permit Requirements > NACWA Platinum Award -16th Consecutive Year! 7 2013 NPDES Annual Report Acknowledgements: Board of Directors Laboratory Operations Department Engineering Department Administration Department Recommendation Accept the 2013 NPDES Annual Report