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1 n EaNulin G.D.owN Jn. <br /> J:i• GOVERNOR <br /> aALIIOn NIh <br /> Mn7nIew l omuauez <br /> ro1 <br /> Water <br /> Boards <br /> t�e aeeneTAnr n <br /> M�/L ter Boal rd s £NWpONyGNiAL PnOT4L710N <br /> Central Halley Regional Water Quality Control Board <br /> 27 February 2017 <br /> MAR a <br /> Paul Franzia 04 0YIJENY'S ONSIILfRNTS <br /> Barrel Ten Quarter Circle Land Company <br /> PO Box 789 <br /> Ceres, CA 95307 <br /> APPROVAL. OF MONITORINGS WELL INSTALLATION WORK PLAN, BARREL TEN � <br /> QUARTER CIRCLE, SAN JOAQUIN COUNTY <br /> a <br /> I have reviewed the Monitoring Well Installation Work Plan (hereafter"Work Plan") prepared by <br /> Kennedy/Jenks Consultants for the Barrel Ten Quarter Circle Land Company (hereafter <br /> "Discharger'), dated 21 February 2017. Wastewater discharge to land at the facility is-permittee <br /> under existing Waste Discharge Requirements (WDRs) Order R5-2009-0038 which was i <br /> adopted on 24 April 2009. Based on a discussion between the Discharger and Central Valley <br /> Region Water Quality Control Board (Central Valley Water Board) staff on 13 December 2016, <br /> the Discharger is planning on adding additional land application areas (LAAs). Central Valley 1 <br /> Water Board staff requested the submittal of a Groundwater Monitoring Well Installation Work <br /> Plan and installation of monitoring wells prior to discharging any winery wastewater to the new <br /> LAAs to establish baseline groundwater conditions. The Discharger will be submitting a Report <br /> of Waste Discharge in 2017 to amend their existing WDRs to include the proposed LAAs. <br /> The Work Plan describes the procedures for well construction and development and presents <br /> the locations for three new groundwater monitoring wells. The proposed groundwater <br /> monitoring wells are necessary to characterize and monitor groundwater conditions 3 <br /> downgradient from the proposed LAAs and to replace MW-6, which has been dry since 2014. <br /> Monitoring wells will be installed to a depth of approximately 100 feet below ground surface <br /> (bgs) with a 30-foot screen interval, depending on lithologic conditions. Well construction <br /> activities should be conducted such that approximately five feet of screened interval be above <br /> the static groundwater level at the time of installation to allow for seasonal variability in <br /> groundwater levels. <br /> Once the newly installed wells are ready for initial sampling (72 hours after the wells have been <br /> developed, as stated in the Work Plan), groundwater samples will be collected and analyzed for <br /> the same constituents required in the existing Monitoring and Reporting Program (MRP). <br /> However, the list of constituents in the Work Plan does not include nitrate as nitrogen, as <br /> required in the MRP. Please include nitrate as nitrogen analysis to the list of constituents to be <br /> analyzed as part of the initial sampling event. <br /> The Work Plan adequately presents the procedures and well construction requirements in <br /> accordance with Requirements for Monitoring Well Installation Workplans and Monitoring Well <br /> Installation Reports (attached), Final well locations will be presented in a Monitoring Well <br /> KARL L. LONo3uv SD.n, P.E..CHAIR ` PAMELA C. CRLEUON P.E„ HOLE,EXECUTIVE OFFICER <br /> 11020 bun Center Drive 1200,Rancho Cordova,CA 85070 1 www.waterboardo.ca.gov/ceniralvaltey <br /> Cil aE01-0—1— <br />