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GAwxlNewsou <br /> YANX GANCI e <br /> Water Boards <br /> FIIV1110NMEIIiAL 1`eVl[I:iIV`I <br /> Central Valley Regional Water Quality Control Board <br /> Marcus Nettz 23 May 2023 <br /> USA Waste of California/Central Valley Compost <br /> 916 Frewert Road Via e-mail <br /> Lathrop, CA 95330 <br /> APPROVAL OF PIEZOMETER INSTALLATION WORKPLAN, CENTRAL VALLEY <br /> COMPOST, SAN JOAQUIN COUNTY <br /> Central Valley Compost is regulated by General Waste Discharge Requirements for <br /> Composting Operations Order 2015-0121-DWQ and Notice of Applicability(NOA) 2015- <br /> 0121-DWQ-R5S009-01. Waste Management Inc./USA Waste of California, DBA Central <br /> Valley Compost (Discharger) is responsible for completing facility improvements in <br /> accordance with, and to comply with, the NOA and the General Order. <br /> Central Valley Regional Water Quality Control Board (Regional Board) staff has <br /> reviewed the Piezometer Installation Work Plan submitted on 18 May 2023 for the <br /> Central Valley Compost Facility in Lathrop. The workplan proposes to install three <br /> piezometers with screen intervals not to exceed 15-feet to monitor groundwater <br /> conditions at the facility. Placement of the screen interval will be determined by field <br /> conditions. Development of the piezometers was not proposed in the workplan. <br /> The Workplan is generally acceptable. However, the piezometers should be developed <br /> following installation to ensure optimum functionality. Please obtain all necessary <br /> permits from San Joaquin County and implement the workplan forthwith. <br /> To comply with the groundwater separation monitoring requirements of the General <br /> Order, the piezometers need to be installed by the end of the third quarter of 2023. <br /> If you have any questions regarding this approval, please contact me at (916) 464-4635 <br /> or by e-mail at Brendan.kenny@waterboards.ca.gov. <br /> BRENDAN KENNY, P.G. <br /> Engineering Geologist <br /> Compliance and Enforcement Section <br /> cc: Jesse Easter, San Joaquin County Environmental Health Department, Stockton <br /> Christine Karl, Cal Recycle, Sacramento <br /> MARK BRADFORD, CHAIR I PATRICK PULUPA, Esq., EXECUTIVE OFFICER <br /> 11020 Sun Center Drive#200, Rancho Cordova, CA 95670 1 www.waterboards.ca.gov/centralvalley <br />