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Invitation For Bid: Hartmann and Setness • <br /> Site Addresses: <br /> Former Chase Chevrolet Facilities(separate Sites): <br /> 423 N.Madison 424 N. Van Buren <br /> Stockton, California Stockton,California <br /> Page 7 <br /> Work anticipated for accomplishment at this locality includes the following: <br /> 1. a central CPT penetration to 25 feet BGS with undisturbed soil samples <br /> collected every five feet beginning at 10 feet BGS to 30 feet BGS <br /> (estimate 5 samples in your bid). Should groundwater be encountered <br /> before the 30' BGS level, then samples will only be collected to the 25' <br /> BGS depth, <br /> 2.• three similar soil sampling penetrations will also be accomplished at <br /> approximately 15 foot distances from the tank cavity center to the north, <br /> south and west of the former tank location (see Figure 3 for proposed <br /> locations), <br /> 3. Samples will be analyzed according to the protocols established in the <br /> "Tri-Regional Board Staff Recommendations for Preliminary Evaluation <br /> and Investigation of Underground Tank Sites" (October, 1990 and August, <br /> 1991) for waste oil tanks. Specifically this includes CAM 5 metals (Cr, <br /> • Ni, Pb, Ni and Zn) as TTLC, TPHg, TPHd, TPHmo, BTXE by USEPA <br /> Method 8020 (or its equivalent), Oil and Grease by Standard Method <br /> 5520, USEPA Methods 8240 (or 8260) and 8270 on every sample, <br /> 4. a "grab" groundwater sample will be collected from the vicinity of Tank <br /> No. 1. This sample will be collected from a CPT penetration advanced to <br /> at least 10 feet below first encountered groundwater as estimated from soil <br /> moisture encountered in the 25' or 30' soil samples, and at a minimum no <br /> less than 40' BGS. This sample is intended for collection using evacuated <br /> VOA vials (BAT"' sampling system or its functional equivalent) for VOC <br /> analyses, pumping into liter sized amber glass jars for non-volatile organic <br /> analyses as well as plastic bottles for metals analyses. The same suite of <br /> analyses as that described above is required for the "grab" groundwater <br /> sample, with the appropriate substitution of extraction and analysis <br /> methods suitable to groundwater matrix. <br /> • <br />