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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 9 <br /> Work anticipated for 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 east, <br /> south and west of the former tank location (see Figure 3 for proposed <br /> locations), <br /> 3. soil samples will be analyzed by USEPA Method 8010 in order to bracket <br /> a wide array of possible halogenated volatile materials. The "grab" <br /> groundwater sample will be analyzed by USEPA Method 601, <br /> . 4. In the event that soil appears to be significantly impacted from <br /> halogenated volatile organic compounds (HVOCs) (as ascertained from <br /> headspace measurements from the collected split samples), a "grab" <br /> groundwater sample will be collected from the vicinity of Tank No. 8. <br /> This sample will be collected from a CPT penetration advanced to at least <br /> 10 feet below fust 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 penetration should be made near the center of the <br /> former tank location. This sample is intended for collection using <br /> evacuated VOA vials (BATT"" sampling system or its functional <br /> equivalent). Preference will be given to bidders who propose to "daisy- <br /> . n ` chain" several evacuated BATTm vials together such that the lowest one is <br /> x completely filled eliminating headspace. This sample will be sent for <br /> ' laboratory analysis by USEPA Method 601, <br /> 5. the health and safety plan for the overall assessment work must address the <br /> potential presence of halogenated volatiles as a health concern with <br /> provision of adequate protection for workers during sampling activities. <br />