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3 a GAV NEWSOM <br /> GOVERNOR <br /> C A61FoaMu JAPEo NFELO <br /> SECFE APy FOR <br /> Water Boards ENVIRONMENTAL PROTECTION <br /> Central Valley Regional Water Quality Control Board <br /> 15 August 2022 <br /> David M. Share, Director <br /> Olin Corporation, Environmental Remediation Group <br /> 3855 North Ocoee Street, Suite 200 <br /> Cleveland, Tennessee 37312 <br /> DMShare(a�olin.com <br /> CENTRAL VALLEY WATER BOARD RESPONSE TO: RESPONSE TO COMMENTS <br /> AND REVISED WELL DECOMMISSIONING AND REPLACEMENT WELL <br /> INSTALLATION WORK PLAN, OLIN CHLOR ALKALI FACILITY, TRACY, SAN <br /> JOAQUIN COUNTY, CALIFORNIA <br /> Central Valley Regional Water Quality Control Board (Central Valley Water Board) staff <br /> has reviewed the 25 July 2022 Response to Comments (RTCs) and the revised Well <br /> Decommissioning and Replacement Well Installation Work Plan (revised Work Plan) for <br /> the Olin Chlor Alkali Facility (Olin Chlor), Tracy, San Joaquin County, California (Site). <br /> Prepared on your behalf by Wood Environment & Infrastructure Solutions, Inc. (Wood), <br /> the RTCs adequately address Central Valley Water Board staff comments on the 11 <br /> April 2022 Well Decommissioning and Replacement Well Installation Work Plan and the <br /> revised Work Plan was successfully updated to reflect Central Valley Water Board staff <br /> comments. The revised Work Plan proposes to decommission five groundwater <br /> monitoring wells (MW-1, MW-3, MW-6, MW-7, and MW-16) and install one new <br /> groundwater monitoring well (MW-17). <br /> Central Valley Water Board staff concurs with the revised Work Plan and does not have <br /> any additional comments. <br /> If you have any questions or comments regarding this letter, please contact Amber <br /> Ginorio at (916) 464-4670 or by email at Amber.Ginorio(a-waterboards.ca.gov. <br /> AMBER L. GINORIO, G.I.T. <br /> Engineering Geologist <br /> Site Cleanup Program <br /> Federal Cleanup Unit <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 />