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EDMUND G. BROWN JR. <br /> /I GOVERNOR <br /> C 4 l 1 MA- EwRODRIOUEZ <br /> %C==0- <br /> Water <br /> VOIWater Boards T <br /> PROTFCTION <br /> Central Valley Regional Water Quality Control Board <br /> RECEIVED <br /> 30 May 2012 <br /> �uN 2012 <br /> Mr. Curt M. Richards ENVIRONMENTAL HEALTH <br /> Corporate Vice President <br /> PERMIT/SERVICES <br /> Environmental, Health & Safety <br /> Olin Corporation <br /> 3855 North Ocoee Street, Suite 200 <br /> Cleveland, Tennessee 37312 <br /> GROUNDWATER MONITORING AND REPORTING PROGRAM R5-2012-0813 <br /> OLIN CHLOR ALKALI TRACY SITE, 26700 SOUTH BANTA ROAD, TRACY, SAN JOAQIN <br /> Dear Mr. Richards: <br /> On 24 January 2012, California Regional Water Quality Control Board, Central Valley Region <br /> (Central Valley Water Board) staff mailed you a review letter and Draft Monitoring and Reporting <br /> Program (Draft MRP) in response to your 26 September 2011 Request for Revision of <br /> Monitoring and Reporting Program No. R5-2008-0819 (MRP Request). Stantec Consulting <br /> Corporation prepared the MRP Request on behalf of Olin Corporation (Olin) for its chemical <br /> manufacturing facility in Tracy, California. <br /> On 15 February 2012, Olin sent an electronic mail requesting the Central Valley Water Board to <br /> reconsider the Draft MRP requirement to continue sampling water from three private non- <br /> domestic wells. The request pointed out that Olin had not detected constituents of concern in <br /> the wells since it first sampled them in 2001. In addition, the request provided well construction <br /> data for two of the three wells. Following that request, Olin provided well construction data for <br /> the third well in a 15 March 2012 electronic mail. Based on the data provided by Olin, the <br /> Central Valley Water Board has removed the sampling requirements for the three wells in the <br /> attached Monitoring and Reporting Program No. R5-2012-0813. <br /> KARL E. LONGLEY SCD, P.E., CHAIR I PAMELA C. CREEDON P.E., BCEE, EXECUTIVE OFFICER <br /> 11020 Sun Center Drive#200,Rancho Cordova,CA 95670 1 www.waterboards.ca.gov/contralvalley <br /> 4rA nECYOLIO PArEn <br />