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PUBLIC HEALTH SE VICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D. M.P.H., Health Of ficer ' <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 tlFo�� <br /> 209/468-3420 <br /> PAUL SUPPLE KITTY WALKER <br /> ARCO PRODUCTS COMPANY COS REDEVELOPMENT AGENCY ' <br /> P O BOX 6549 305 N EL DORADO STREET <br /> MORAGA CA 94570 STOCKTON CA 95202 <br /> RE: Arco Station#4493 Site Code: # 1042 <br /> 205 Center Street <br /> Stockton CA 05202 <br /> WORKPLAN. Addendum to Work Plan dated November 16,2a 0 <br /> DATED: December 20,2000 <br /> PREPARED BY: SE COR International Incorporated <br /> APPROVED: x <br /> D. EDED: Submit bDISAPPROVE <br /> ar <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN ADDENDUM <br /> 1. The San Joaquin County Well Standard will be adhered to when onstructing the multi completion wells. The wells <br /> will be installed with 8 inch hollow stem augers to allow for installation of a minimum 2 inch diameter grout seal. <br /> 2. Lateral assessment of the down-gradient extent of the contaminai it plume in groundwater was not addressed at this <br /> time due to construction activities in the immediate area. <br /> 3. The shallowest sampling port in each multi-completion well will be at 30 feet bsg. <br /> COMMENTS AND CONDITIONS: <br /> 1. See 12/05/00 PHS/EHD correspondence for approved elemerim of the 11/16/00 work plan. <br /> 2. Forty eight hours notice to PHS/EHD is required prior to initia g field work- <br /> DATED <br /> orkDATED t l Z 1101 BY �- <br /> on'Duncan,Senior REHS 209 468-0337 <br /> CC: M-v HartzelL CVRWQC B <br /> Bill Brown,Daley&Heft FIL; F. <br /> RustyBenkosky,SECDft °`"� CO3j) <br />' 3 <br /> A Division of San Joaquin County Health Care Services <br />