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Ms. Margaret Lagorio, SJCEHD January 5,2005 <br /> Work Plan for Additional Site Assessment and Project No.2033-15600-01 <br /> Evaluation of Remedial Alternatives <br /> Joe's Truck Plaza, Lathrop,California <br /> Page 7 <br /> forwarded to the State Water Resources Control Board for inclusion in the GeoTracker <br /> database. <br /> Well Development and Groundwater Sampling <br /> The newly installed groundwater monitoring wells will be developed a minimum of 72 <br /> hours after installation. Development will consist of surging with a bailer and <br /> groundwater pumping. Development will continue, to the extent practical, until the <br /> discharged water runs clear. After well development and stabilization of the water levels, <br /> water levels and the quantity of well volumes removed from the well will be recorded. <br /> A minimum of 24 hours after the groundwater monitoring wells have been developed, the <br /> wells will be purged and groundwater samples will be collected. The samples will be <br /> collected using a disposable bailer, transferred to laboratory-supplied glass vials, labeled, <br /> and placed in an ice-chilled cooler. The samples will remain chilled until relinquished to <br /> a state-certified analytical laboratory. Strict chain-of-custody procedures will be <br /> followed from the time the samples are collected until the time the samples are <br /> relinquished to the laboratory. The newly installed monitoring wells will be incorporated <br /> into the existing quarterly monitoring and sampling program. <br /> Waste Management <br /> All soil cuttings generated during the field activities will be properly secured and stored <br /> at the site pending disposal. A composite sample will be collected from the soil cuttings <br /> for disposal characterization. Upon receipt of the analytical data, a licensed contractor <br /> will transport the soil to an appropriate disposal facility. <br /> Wastewater generated during drilling, development, and sampling operations will be <br /> placed in properly labeled, DOT-approved, 55-gallon steel drums, and stored at the site <br /> pending disposal. A licensed contractor will transport the wastewater to an appropriate <br /> facility for disposal. <br /> Task 3: Laboratory Analysis <br /> Soil and groundwater samples collected for chemical analysis during the assessment <br /> activities will be forwarded to a California state-certified laboratory under strict chain-of- <br /> custody procedures. Appendix A presents additional information regarding sample <br /> collection and analytical procedures. <br /> The soil and groundwater samples will be analyzed for total petroleum hydrocarbons as <br /> diesel (TPHD) and TPHG by USEPA Method SW8015B/DHS LUFT Manual, and for <br /> benzene, toluene, ethylbenzene, total xylenes (BTEX), MTBE, TAME, ethyl tertiary <br /> K:Voe's Truck Plaza\Work PlansUoes workplan 010505.doc <br />