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PUBLII ` HEALTH SE9VICES <br /> SAN JOAQUIN COUNTY i <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer r••, Y.. <br /> 304 East Weber Avenue,Third Floor • Stockton, CA 95202 *cjFaA�� <br /> 209/468-3420 <br /> TERESA LANCTOT-EARTHGRAINS COPY�/COPY8400 MARYLAND AVE FILE O <br /> ST LOUIS MO. 63105-3668 <br /> RE: Earth Grains/formerly Kilpatrick Bakery ROM 0000110 <br /> 1717 S. Center St. Clean Up Claim #015889 <br /> Stockton, CA., 95201 <br /> WORK PLAN: "Subsurface Site Investigation.' DATED: September 24, 2001 <br /> PREPARED BY: Philip Environmental Services Corp.—Mark F. Milward. <br /> STATUS: *APPROVED (with conditions,see "Comments"). <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN (H&S 25299.37. subd(c)(3)1: <br /> • Push three(3) Geoprobe holes ("PH-3" to "PH-5") onsite around former UST pit to 50' <br /> bgs with continuous core/soil collection and analyze only soil samples for TPHg, <br /> BTEX, and oxygenates and, <br /> • Push three(3) Geoprobe holes ("PH-6"to "PH-8") offsite to 50' bgs for lateral <br /> delineation. Soil and groundwater sample collection for same petroleum constituents <br /> and, <br /> • Drill and install one (1) air sparge well ("SP-1") onsite to 50' bgs and one(1) soil vapor <br /> extraction well ("VW-1") to 25' bgs onsite without soil sampling. Future remedial <br /> action testing and feasibility study in next phase and, <br /> • Drill and install one (1) groundwater monitoring well ("MW-4") offsite to approximately <br /> 40' bgs. Soil samples may be collected and analyzed based on field observations and, <br /> • Survey well heads, develop new wells, monitor and sample all groundwater monitoring <br /> wells, and submit quarterly report to PHS-EHD. <br /> *COMMENTS AND CONDITIONS: <br /> • Collect'continuous core soil lithology' samples in "MW-4" boring to verify permeable <br /> zone for proper screened interval placement, <br /> • Obtain City of Stockton Encroachment and Revocable permits and submit along with <br /> PHS-EHD well permit applications and fees and, <br /> • Conduct well and sensitive receptor survey and submit results within one year. <br /> REASONS FOR DISAPPROVAL OF THE WORK PLAN [H&S 25299.37 subd c 3 : <br /> • none / <br /> DATED: October 16, 2001. BY '!� aGGP�v('/J <br /> Michael Infurna, S§6ior S (209)468-3454 <br /> c: K. Collins/M. Nahorn —Env Closures, (Wm. Whitman ET L), 22180 May Rd N., Acampo, <br /> CA. 95220. <br /> Jerry Gregerson —878 Morningside, Stockton, CA. 95207. <br /> [X] Faxed to consultant on F&9D <br /> A Division Of San Joaquin County Health Care services <br />