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SGAVIN NEWSOM <br /> \\\ OOVFPIbH - <br /> OALIFOIIXIA _ _ -SECRUARYFORNFElO <br /> water Boards ENVIRONMENTAL PROTECTION <br /> Central Valley Regional Water Quality Control Board <br /> 1 April 2020 <br /> Randall Lange <br /> JahantWood Cellars,L.P. <br /> 1525 E. JahantRoad <br /> Acampo, CA 95220 <br /> APPROVAL OF THE MONITORING WELL INSTALLATION WORKPLAN AND <br /> GROUNDWATER SAMPLING AND ANALYSIS PLAN,JAHANT WOOD CELLARS, <br /> L.P., LANGE TWINS WINERYAND VINEYARDS, SAN JOAQUIN COUNTY <br /> Lange Twins Winery and Vineyards(Facility)is owned and operated by Jahant Wood <br /> Cellars, L.P. (the Discharger).The Facility is currently regulated under Waste <br /> Discharger Requirements(WDRs)Order R5-2006-0088, adopted on 4 August2006. <br /> The Dischargeris removing their existing land application areas(LAAs) and plans to <br /> discharge wastewater to a newly purchased,60.1-acre parcel located adjacenttothe <br /> Facility. Revised WDRs that will include the new LAA are proposed for adoption at the <br /> Central Valley Water Board's April 2020 Board meeting. <br /> Because groundwater quality beneath the new LAA has not been established,the <br /> Discharger has proposed to install groundwater monitoring wells priordischarging <br /> wastewater in this area. The Discharger submitted a Monitoring Well Installation Work <br /> Plan and Groundwater and Sampling and Analysis Plan (Work Plan),dated 24 March <br /> 2020 that proposes to install two monitoring wells thatwill be included underthe existing <br /> Monitoring and Reporting Program,which will be revised when new WDRs are adopted. <br /> Central Valley Water Board staff has reviewed the Work Plan and recommends the <br /> following: <br /> • After well installation,well development should continue until a turbidity of less <br /> than 5 nephelometric turbidity units(NTUs) is achieved (or as close as possible <br /> to 5 NTUs within reason). <br /> This recommendation was discussed with the Discharger's consultant, Enviro <br /> Assessment, PC, in an email dated 27 March 2020.The con sultantagreed to <br /> Implementthe turbidity recommendation; therefore, the Work Plan is approved, and a <br /> revised Work Plan is not required to be submitted. <br />