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Mr Roger Smith - 2 - 14 March 2019 <br /> The ongoing Site characterization work is being conducted to understand the vertical and lateral <br /> extent of the sulfolane plume between the onsite source area and the municipal water supply <br /> wells. The data will also be used to evaluate potential remedial alternatives to protect the <br /> private water supply wells and municipal water supply wells <br /> Central Valley Water Board staff concur with the proposed scope of work presented in the Work <br /> Plan Addendums. The drilling sampling and well construction work must be conducted in <br /> accordance with the Work Plan and the well construction details modifications presented in the <br /> First Addendum, and in accordance with the conditions mentioned in the email-approvals <br /> Please obtain all the necessary permits from the San Joaquin County Environmental <br /> Management Department prior to commencing the well construction work <br /> If applicable, please provide at least a one-week notice of field activities to allow Central Valley <br /> Water Board staff the opportunity to observe the fieldwork. <br /> If you have questions or comments please contact me at 916-464-4658. or by E-mail at <br /> ssewalia(c)-waterboards.ca.gov <br /> Siddharth Sewalia <br /> Water Resource Control Engineer <br /> Site Cleanup Unit <br /> cc Mr Dan Darlington, J.R. Simplot Company, Lathrop <br /> Ms Jenifer Beatty. ARCADIS Inc. Roseville <br /> Mr Alan L. Prouty, J R Simplot Company, Boise, ID <br /> Mr. Brian Crets, J R. Simplot Company, Lathrop <br /> Ms Nicole Gotberg, Geosyntec, Rancho Cordova, California <br /> Mr Garrett Backus. San Joaquin County Environmental Management Department, <br /> Stockton <br /> Mr Greg Gibson, Public Works Department. City of Lathrop <br /> KARL E. LONGLEV SCD, P.E., CHAIR I PATRICK PULUPA, ESO., EXECUTIVE OFFICER <br /> 11020 Sun Center Drive#200,Rancho Cordova,CA 95670 1 www,waterboards.ca.gov/cenlralvalley <br /> Ca RECYCLED PAPER <br />