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HomeMy WebLinkAbout06.a. (Handout) 2013 Collection System Sanitary Sewer Overflow Annual Report6.Q. (Handoaf) Annual Report of Sanitary Sewer Overflows Paul A. Seitz Collection System Operations Department April 3, 2014 11 Central Contra Costa Sanitary District Protecting Public Health and the Environment 2013 Collection System Operations= Highlights ➢ 48 overflows — 3rd lowest in CCCSD history ➢ 3.3 overflows per 100 miles ➢ Cleaned 4,920,719 feet (932 miles) of sewers. Most footage ever cleaned by CSO ➢ No pumping station or capacity overflows ➢ Awarded CWEA Bay Section Collection System of the Year and the state for systems > 500 miles ➢ Dante Marchetti, Field Operations Supervisor, awarded Supervisor of the Year for the CWEA Bay Section and the State ➢ Rod Turning Handle (Mike Klubben) and the Movable Pipe Rack (Leo Gonzalez) have placed in the Gizmos and Gadgets for Wastewater Innovations by the CWEA State Committee ➢ Don Turk will be recognized for CWEA's 25 Years of Service Award ➢ Don Bartlett was awarded the Collection System Worker of the Year by the CWEA Bay Section Committee D Comparative Data for 2013 from State Database Statewide (CIWQS as of 0310612014) ■ 4,742 overflows and total volume of 6,779,665 gallons ■ Average of 5.1 overflows per 100 miles ■ Average volume of 1,400 gallons per SSO for the year ➢ Region 2 — Bay Area (CIWQS as of 03106114) ■ 1,255 overflows and total volume of 2,147,266 gallons ■ Average of 6.7 overflows per 100 miles ■ Average volume of 1,711 gallons per SSO for the year ➢ Central Contra Costa Sanitary District ■ 48 overflows and total volume of 48,816 gallons ■ Average of 3.3 overflows per 100 miles ■ Average volume of 1 ,017 gallons per SSO for the year Overflow Quantities Size of SSO (gallons) Number Number in 2013 in 2012 Greater than or equal to 1,000 2 2 Between 100 and 999 18 19 Between 10 and 99 22 17 Less than 10 6 11 Total overflow volume 48,816 gallons 9,449 gallons P Overflows Comparison 1999 - 2013 NUMBER OF OVERFLOWS 180 162 160 143 141 140 135 100 123 120 ,4 100 80 e' F 60 40 20 _ z - 0 - i 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 VZ.M.Ai C-1*CS! 2013 Overflow By City and Cause 2013 Overflow Causes 4% 21% ■ Roots Grease Rags/Rock/Paper/Debris .3 Other Plug A csi 2013 Overflows by Pipe Size, Type, and City Overflows by Pipe Size, Type and City 18 15 12 9 11 6 3 3 2 2 1 0 1 Z 1 1 2 1 Alamo Danville Lafayette Martinez Moraga Orinda Pleasant Hill Walnut Creek ■8" ABS 08" ACP 06" CIP ®8" CIP 08" DIP 08" HDP 08" HDPE m8" PVC 06" VCP o10" VCP ■8" VCP 2013 Overflow Percentage ❑ Walnut C 13% ■ Pleasant Hil 8% ❑ Orinda, 33 by City ❑ Alamo. 2% ® Danville, 6% ❑ Lafayette, 31 % Martinez, 4% U Category 1 Overflows (Over 1,000 gallons or into the waters of the state) 14 Updated through March 2014 6djolk._ Year: 2010 2011 2012 2013 2014 Total O /Fs by year: YTD comparison: 12 4 8 1 0 5 01 01 of 0 12 10 s 6 4 2 0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC t 2010 -0 -2011 - - -2012 -2013 -2014 FEB! 3i mmm ' R = = =_ =�_ ©Wm_ �� = =_ ' MM_ 12 10 s 6 4 2 0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC t 2010 -0 -2011 - - -2012 -2013 -2014 Comparison of Cumulative Overf low s Updated through January 2013 Year: 2010 2011 2012 2013 Total SSOs by year: 43 37 49 48 JAN 5 7 6 2 FEB 6 7 3 4 MAR 3 0 3 3 APR 5 1 3 3 MAY 2 1 2 3 JUN 4 3 2 4 JUL 1 4 3 4 AUG 2 3 5 4 SEP 2 3 0 3 OCT 3 2 6 5 NOV 5 3 4 7 DEC 5 3 12 6 100 90 80 70 60 50 40 30 20 10 0 Comparison of Cumulative Overflows JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC X2010 (2011 —2012 ♦2013 Questions? G = Sl