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GAVIN NEwsom <br /> c�vl-KNOB <br /> ca LlFoxxa ���// SEC E ' �TAARYFOR <br /> Water Boards 7 ENVIRONMENTAL PROTECTION <br /> Central Valley Regional Water Quality Control Board <br /> 12 December 2023 <br /> Carl Douglas MacArthur Jr. <br /> 10834 Copperopolis Road <br /> Stockton, CA 95215 <br /> REQUEST FOR ADDITIONAL MONITORING, ASSESSMENT, AND REMEDIATION <br /> OPTIMIZATION, COUNTRYSIDE MARKET, 10848 COPPEROPOLIS ROAD, <br /> STOCKTON, SAN JOAQUIN COUNTY, LUST CASE #390783, OSCF PROJECT <br /> #B0185, GLOBAL ID #T0607700616 <br /> The Countryside Market underground storage tank (UST) petroleum release case, <br /> located at 10848 Copperopolis Road in Stockton (Site), is currently being funded via a <br /> grant from the State Water Board's Orphan Site Cleanup Fund (OSCF) program. The <br /> existing OSCF funding grant for this case expires on 1 February 2024 and a grant <br /> amendment is needed to continue funding this case. The anticipated work timeframe to <br /> be covered by such an amendment is three years. On 6 December 2023, staff from <br /> OSCF, RMD Environmental Solutions (RMD), and Central Valley Water Board met with <br /> you to discuss the path forward and determine the scope of work to be funded in the <br /> grant amendment. This group shall be referred to in this letter as the Joint Execution <br /> Team (JET). On 11 December 2023, OSCF and Central Valley Water Board staff had a <br /> follow-up meeting to discuss the outcome of the previous meeting with senior OSCF <br /> staff who were unable to attend the previous meeting. <br /> During the 6 and 11 December 2023 meetings, the JET discussed and agreed upon the <br /> following: <br /> 1. The JET agreed that you will continue to perform semi-annual groundwater <br /> sampling during 2nd and 4th calendar quarters, with reports due by the first day of <br /> the second month following the end of each semi-annual period (i.e. 1 July and <br /> 1 February). The following wells should be inspected, gauged, and sampled <br /> during each semi-annual event: <br /> a. Monitoring Wells: <br /> i. MW-1 through MW-7 <br /> ii. OBS-1 <br /> iii. Any new monitoring wells installed <br /> b. Domestic Wells: <br /> i. DW10848 <br /> ii. DW10967 well-head treatment system influent, mid-stream, and <br /> effluent <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 />