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Mr. John Funderberg - 3 - 31 October 2013 <br /> San Joaquin County <br /> Dewatering Permit <br /> If discharging groundwater to land, the proponent may apply for coverage under Statewide <br /> General Waste Discharge Requirements for Discharges to Land with a Low Threat to Water <br /> Quality, Water Quality Order (WQO) 2003-0003-DWQ. Small temporary dewatering projects <br /> are projects that discharge groundwater to land from small construction projects, excavation <br /> projects, or dewatering of underground utility vaults. Dischargers seeking coverage under the <br /> general order must file with the Regional Water Board as described in the WQO. <br /> If discharging groundwater to surface water or storm drains, the proponent may be required to <br /> file a Dewatering Permit covered under WDRs General Order for Dewatering and Other Low <br /> Threat Discharges to Surface Waters, Order No. R5-2008-0081 (NPDES CAG995001). The <br /> following discharges may be covered by this permit provided they do not contain significant <br /> quantities of pollutants and are either (1) four months or less in duration, or (2) the average <br /> dry weather discharge does not exceed 0.25 million gallons per day (mgd): <br /> 1. Well development water <br /> 2. Construction dewatering <br /> 3. Pump/well testing <br /> 4. Pipeline/tank pressure testing <br /> 5. Pipeline/tank flushing or dewatering <br /> 6. Condensate discharges <br /> 7. Water Supply system discharges <br /> 8. Miscellaneous dewatering/low threat discharges <br /> If you have any questions about the storm water program, please call Steve Rosenbaum at <br /> (916) 464-4631. Additional information is available via the Internet at the Central Valley Water <br /> Board's Storm Water website: <br /> http://www.waterboards.ca.gov/centralvalleV/water issues/storm water/ <br /> For more information on Section 404 Permits, contact the Sacramento District of the Corps of <br /> Engineers at (916) 557-5250 or Elizabeth Lee with the Central Valley Water Board at <br /> (916)-464-4787. <br /> If you have any questions about the discharge to land permitting process, including applying <br /> for coverage under the dewatering general order, I can be reached at (916) 464-4616 or by <br /> email at sarmstrong(oDwaterboards.ca.gov. <br /> SCOTT ARMSTRONG, P.G., C.HG. <br /> Engineering Geologist <br /> Waste Discharge to Land Permitting Unit <br /> cc Mr. Rodney Estrada, San Joaquin County Environmental Health Dept., Stockton <br /> George Reed, Inc., Modesto <br />