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z <br /> PUBLIC 47(LTH- SERVIChS <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer c P Ii 1 <br /> FORS <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br />_ JAMES M & B LANGSTON <br /> PO BOX 97 <br /> LATHROP CA 95330 <br /> Site Code:1503 <br /> RE: former Langston's Arco RO#00316 <br /> 15615 S. Seventh St. <br /> Lathrop, CA.,95330 <br /> WORK PLAN: "Work Plan Addendum-May 2001" DATED:May 16.2001. <br /> PREPARED BY: Advanced Geo-Environmental Inc. Calvin F. Lee. <br /> APPROVED <br /> DISAPPROVED <br /> RD <br /> ADDENDUM NEEDED Submit by. <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PIAN[H&S <br /> 25299.37,subd(c)(3)]: <br /> 1 <br /> • Advance five (5) soil borings onsite to approximately 50 feet below grade onsite and <br /> collect soil and groundwater samples for lateral and vertical delineation of petroleum <br /> l <br /> contamination, <br /> • Analyze selected soil and all groundwater samples for petroleum hydrocarbons and <br /> oxygenates (including MtBE),using EPA Methods, 8015m, 8020, and 8260B, <br /> • Calculate remaining petroleum hydrocarbon mass in soil and provide a`mass and <br /> balance' and transport-fate model, <br /> • Submit a Report of Findings. <br /> COMMENTS AND CONDITIONS: <br /> • Obtain PHS-EHD well permit <br /> REASONS FOR DISAPPROVAL OF THE WORK PLAN[H&S 25299.37,subd(c)(3)]: . <br /> • none <br /> DATED <br /> MAY 2 4 2001 B�AN11chael <br /> Infu ,Se ' r REHS 9 468-3454 <br /> Faked to consultant[ 4_5 <br /> A Division of San Joaquin County Health Care Services <br />