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also contract a private utility locator to confirm the locations of underground utilities in the vicinity of each well. Proposed Well Destruction Activities The current groundwater monitoring well network consists of eight on-site wells (MW1 through MW7, MW13), and five off-site wells (MW8 through MW12). There are four soil vapor wells on-site (VW1 through VW4) and two air sparge wells (AS1 and AS2). Well locations are shown on Figure 2. Monitoring wells at the site are generally completed in two zones. Shallow wells (MW1 through MW10) are screened between 20 and 45 feet bgs. Deep wells(MW11 through MW13) are screened between 60 and 65.5 feet bgs. The vapor wells (VW1 through VW4) are screened between 10 and 35 feet bgs. The air sparge wells (AS1 and AS2) are screened between 35 and 40 feet bgs. Well construction details are shown in Table 1. Atlas will contract with a C-57 drilling company to properly destroy the wells. Each well will be overdrilled to the depth of the original boring with an eight-inch minimum diameter hollow stem auger to ensure all well materials are removed. The boreholes will be grouted to the surface from the total depth up as the augers are removed from the subsurface using neat Portland 1/11 cement. Waste Management The excavated soil and overdrilled material will be generated and stored on-site either in 55-gallon steel drums or in a soil bin. Once the soil is profiled,the bin will be transported by a licensed waste hauler and disposed of at an approved facility. Report Preparation Upon completion of the well destruction activities, a summary report will be prepared that will include a description of well destruction field activities associated with the site, including records of waste disposal. Well Completion/Destruction Reports will be submitted to the Department of Water Resources by the drilling company. SCHEDULE Atlas will notify the SJCEHD prior to commencement of field activities to arrange for inspections.