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Mr. Gerald Djuth, C.E.G.,P.E. June 14, 2011 Page 2 of 3 Well construction details are shown in Table 1. Soil boring logs and well completion diagrams are included as Enclosures A and B,respectively. Tasks A summary of the tasks to be performed is as follows: • Obtain a permit from San Joaquin County to destroy 33 ground water monitoring and ozone sparging wells. • Coordinate access with the current operator of the facility. • Obtain access agreements with all impacted parties. • Use an underground utility locating company to locate ground water and ozone sparging wells that may be buried and assure that all borings are clear of utilities. a Notify Underground Service Alert at least 72 hours prior to scheduled drilling. • Notify San Joaquin County prior to well destruction activities to schedule inspection. • Remove the standpipes and flush mounts from the monitoring and ozone sparging wells. • Over-drill 21 ground water monitoring wells and 12 ozone sparging wells as previously described. • Complete Department of Water Resources Well Completion Reports for each well destroyed. WASTE DISPOSAL,INVESTIGATION-DERIVED WASTE Decontamination water and wastewater used in destruction methods will be stored onsite in 55-gallon drums, then transported and disposed of at a State of California certified wastewater disposal facility. Standpipes, well casings, annular material, and cuttings from over-drilling will be containerized onsite and sampled for waste profiling purposes. The waste will then be transported and disposed of at a State of California certified disposal facility. SCHEDULE Field work is anticipated to be completed within 6 weeks following RWQCB and San Joaquin County approval of this Work Plan. Preparatory tasks such as execution of agreements with ©2011.Georgia-Pacific LLC.All rights reserved. AM "E A. Ua2011 Letters and Reporls%16014,01\Work PlsnslRevised Well Desncticn\Work Plan.doc