Steve McLaughlin, PEVirginia Beach Public Works

October 2012

Location of Lynnhaven Watershed

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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 2004EPA Approval August 2004State Water Control Board December

2004

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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 TreatmentLevels of Sewerage Treatment

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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

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POLLUTANT LEVEL

BODmg/l

CODmg/l

TotalNitrogen

mg/l

TotalPhosphorus

mg/l

FecalColiform#/100ml

Boat Wastewater Average 3,172 11,136 1,662 117 7,500,000

Raw Sewage to Chesapeake-Elizabeth Treatment Plant

242 463 38 5.7 ND

Treated Effluent from Chesapeake – Elizabeth Treatment Plant

1.5 ND 3.1 1.4 4

Ratio Boat Waste to Raw Sewage 13.11 24.05 43.74 20.53 ND

ND – Data not available

BOAT WASTE POLLUTANT CONCENTRATIONS COMPARED TO RAW AND TREATED SEWAGE AT THE CHESAPEAKE ELIZABETH WASTE WATER TREATEMENT PLANT

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Special Acknowledgements

Citizens and City Council of the City of Virginia Beach

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Thank You

smclaugh@vbgov.com757.385.4131

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