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PU <br /> BA HEALTH SEE , 10ES <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA NID.M.P 11 <br /> Health C, <br /> '�. <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) Stockton, California 95201 <br /> (209) 468-3400 <br /> AUG 3 0 1991 Fol <br /> � �1 <br /> C <br /> KYLE CHRISTIE <br /> ARCO PRODUCTS CO <br /> P 0 BOX 5811 <br /> SAN MATEO CA 94402 <br /> RE: Arco Station #6100 IN REPLY REFER TO SITE CODE: 1708 <br /> 25775 Patterson Pass <br /> Tracy, CA 95376 <br /> San Joaquin County Public Health Services, Environmental Health Division has reviewed the Work Plan <br /> dated August 5, 1991, prepared by Applied GeoSystems, Inc., and we have the following comments. <br /> 1. Per the telephone conversation of August 23, 1991 with David Stavarek of Applied <br /> GeoSystems, eight vapor extraction wells will be installed. Screened interval of each vapor <br /> extraction well will vary according to location of the well (subsurface characteristic). <br /> 2. Soil samples should be collected at five foot intervals or changes in lithology. <br /> 3. Soil samples should be tested for Total Lead using Method 7421 not Organic Lead. <br /> 4. Submit as an addendum to the work plan placement and storage of the soil from the <br /> borings during the time disposal options are being evaluated. <br /> S. Submit as an addendum to the work plan how soil samples will be selected for lab analysis. <br /> 6. Soil samples are to be maintained at 40C until delivered to the laboratory. <br /> 7. Please provide this office with 48 hours notice prior to any site activity. <br /> If you have any questions, contact Margaret Lagorio, Senior REHS, of my staff at (209)468-3449. <br /> Jogi Khanna, M.D., M.P.H. <br /> ealth Officer <br /> fficer <br /> Laurie A Cotulla, REHS, Program Manager <br /> Environmental Health Division <br /> LAC/ML:nr <br /> c: Applied GeoSystems, Inc. <br /> A Division of San Jmaquin County Hcahh(are S-Mccs �� <br />