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<br />aecom.com <br />Our Reference 60632236 <br />7/10 <br />3.Rinse using deionized/distilled water. <br />Because sampling activities will be completed in relatively shallow soil, decontamination fluids will be <br />poured onto the ground surface at the Site. If grossly contaminated material is contacted, the fluids will be <br />containerized and profiled for subsequent transport off-site to an appropriate disposal facility. <br />Disposable equipment intended for one-time use will not be decontaminated. Instead, this equipment will <br />be packaged for appropriate disposal. <br />Quality Assurance Sampling <br />Two duplicate soil samples, one trip blank, and one matrix spike/spike duplicate recoveries will be <br />collected and submitted for analysis for quality control purposes. <br />Additionally, one duplicate soil vapor sample and one TO-17 field blank soil vapor sample will be collected <br />and submitted for analysis. <br />No equipment blank samples will be collected due to the difficulty in correlating water results to TPH and <br />VOC soil sample results. <br />Backfilling Procedure <br />After soil vapor well samples have been collected, and before completion of the boring by direct-push <br />auger, all well construction material will be removed from the boring using a hand-auger. <br />At the conclusion of sampling activities, each boring will be backfilled with neat cement grout, (i.e., <br />Portland Cement-Type I/II), in accordance with San Joaquin County requirements (SJCEHD 2005). <br />Investigation-Derived Waste <br />Investigation-derived waste (IDW) soil will be generated during sampling activities. The soil will be placed <br />in Department of Transportation (DOT)-approved 55-gallon drums. The IDW will be covered and <br />temporarily stored at the Site pending sampling and analysis for waste profiling purposes. It is anticipated <br />that the soil will be classified as non-hazardous. <br />One representative IDW soil sample will be collected and placed in an insulated cooler with ice for <br />transport under chain-of-custody to Eurofins TestAmerica laboratory for waste profiling purposes. The <br />sample will be analyzed for TPH-g and VOCs by EPA Method SW8260B, TPH-d and TPH as motor oil by <br />EPA Modified SW8015B and (3) California Title 22 Metals by EPA Method SW6010B. The sample will be <br />analyzed on a standard 10-day-turnaround time. <br />Following receipt of the laboratory analytical results, the IDW will be transported offsite by Belshire <br />Environmental Services for disposal to the Recology Hay Road Landfill in Vacaville, California. Newark will <br />be listed as the generator on the disposal manifests, and the bill of lading and the disposal manifest will be <br />signed by a Site representative. <br />Schedule and Reporting <br />Implementation of this work plan will be completed to meet the RWQCB reporting requirements, which are <br />yet to be established; however, the following approximate schedule is anticipated. <br />AECOM will commence field activities within 45 days following RWQCB approval of the final work plan <br />(subject to subcontractor availability). Utility-locating field activities are expected to take 1 full day. <br />Soil sampling between 0 and 5 feet bgs and installation of the temporary soil vapor wells are expected to <br />occur a minimum of 4 days after utility-locating field activities and are expected to take 1 full day. Soil