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AECOM • Volatile organic compounds (VOCs) by EPA Method SW826013; and • California Title 22 Metals by EPA Method SW6010B. Each water sample will be analyzed for TPH-g and TPH-d by EPA Modified Method SW8015 and VOCs by EPA Method SW8260B. Following receipt of the laboratory analytical results, the IDW will be transported off-site by Belshire Environmental Services for disposal. The soil and water will be transported to an appropriate disposal facility. Newark will be listed as the generator on the disposal manifests and bill of lading, and the disposal manifest will be signed by a Site representative. Removed well vaults and concrete pads will be transported back to the selected drilling subcontractor's yard and disposed of as construction debris. Schedule and Reporting AECOM will conduct field work within 30 days after receiving the well destruction and encroachment permits (subject to subcontractor availability). Utility-locating field activities are expected to take 1 full day. Well destruction activities are expected to occur a minimum of 4 days after utility-locating field activities and are expected to take 5 full days. IDW removal is expected to occur a minimum of 4 weeks after completion of well destruction activities and is expected to take 1 day.AECOM will prepare a Draft Well Destruction Report (Report)for RWQCB within 45 days of completing field activities. The Report will document completed well destruction activities and, at a minimum, will include the following: • Objectives; • A summary of completed field activities; • Field notes, including a table comparing the estimated and actual volume of grout used; • Tables and figures recording the well destruction volumes and locations; • Relevant documentation including the San Joaquin County well destruction permit, City of Stockton encroachment permit, completed well destruction forms, DWR-188 Well Completion (Well Destruction) Reports, and disposal manifests or bills of lading for disposal of IDW; and • Conclusions and recommendations. AECOM will incorporate any RWQCB review comments and revise the Report prior to the Final Report submission within 15 days of receiving RWQCB comments. Limitations Some background information and other data that AECOM has used in preparing this Work Plan were furnished to AECOM by third parties.AECOM has relied on this information as furnished and is neither responsible for nor has confirmed the accuracy of this information. aecom.com Our Reference 60632236 4/6