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Steve McLaughlin, PE Virginia Beach Public Works October 2012.

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Presentation on theme: "Steve McLaughlin, PE Virginia Beach Public Works October 2012."— Presentation transcript:

1 Steve McLaughlin, PE Virginia Beach Public Works October 2012

2 Location of Lynnhaven Watershed 2

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4 State and Federal Regulatory Action Lynnhaven Bay, Broad and Linkhorn Bay Watersheds Total Maximum Daily Load (TMDL) Report for Shellfish Areas Listed Due to Bacteria Contamination  Final Report March 2004  EPA Approval August 2004  State Water Control BoardDecember

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8  Type I Marine Sanitation Devices discharge at no more than 1,000 Fecal Coliform colonies per 100 ml with no visible floating solids  Type II Marine Sanitation Devices discharge at no more than 200 Fecal Coliform colonies per 100 ml and no more than 150 mg/l suspended solids  No Discharge Zone prohibits these discharges Levels of Sewerage Treatment 8

9  By reference, the shellfish standard for Fecal Coliform is 14 per 100 ml.  The swimmable/fishable standard was Fecal Coliforms at 200 per 100 ml; is now enterococcus at 104 per 100 ml Virginia Department of Health Requirements 9

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13 POLLUTANT LEVEL BOD mg/l COD mg/l Total Nitrogen mg/l Total Phosphorus mg/l Fecal Coliform #/100ml Boat Wastewater Average 3,172 11,136 1, ,500,000 Raw Sewage to Chesapeake-Elizabeth Treatment Plant ND Treated Effluent from Chesapeake – Elizabeth Treatment Plant 1.5 ND Ratio Boat Waste to Raw Sewage ND ND – Data not available BOAT WASTE POLLUTANT CONCENTRATIONS COMPARED TO RAW AND TREATED SEWAGE AT THE CHESAPEAKE ELIZABETH WASTE WATER TREATEMENT PLANT 13

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38 Special Acknowledgements Citizens and City Council of the City of Virginia Beach 38

39 Thank You


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