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' CLOSURE REPORT Monitoring Well Abandonment ' Overhead Door Facility Lodi, California ' 1.0 INTRODUCTION BSK & Associates, Inc. (BSK) has prepared this Closure Report for the abandonment of ' six on-site groundwater monitoring wells. BSK was the prime contractor (License Number C57-490942) and Halliburton Services was a subcontractor. I The location of the site within the Lodi area is shown on Figure 1, Vicinity Map. The job site address is 1220 East Victor Road in Lodi, California. The locations of the six groundwater monitoring wells abandonment are presented on Figure 2, Site Plan. 1.1 Work Plan and Site Safes Plan - Prior to permitting the work, a Work Plan and Site Safety Plan dated May 19, 1992 was prepared by BSK and submitted to Remediation Services, Inc. (RS). The Work Plan and Site Safety Plan included abandonment methodology, potential chemical and physical hazards, the grout mix design, and a project schedule. Two copies of the Work Plan and Site Safety Plan were submitted to Overhead Door Corporation by RS on May 19, 1992. A copy of the Work Plan and Site Safety Plan was forwarded to the Regional Water Quality Control Board (RWQCB) by Overhead Door Corporation. 1.2 Permits - Prior to commencement of work, a destruction permit application, a remittance check for $60.00, and a copy of the Work Plan and Site Safety Plan prepared by BSK was submitted to Ms. Diane M. Hinson of the San ' Joaquin County Public Health Services, Environmental Health Division (SJPHS) on May 19, 1992. A copy of the cover letter and signed acceptance and completion permit for the destruction of six groundwater monitoring wells ' is attached under Appendix A. On May 28, 1992 BSK was informed by Mr. Michael J. Infurna, Jr., of SJPHS that our permit application was approved. 1.3 Site Preparation - Arrangements were made with Mr. Craig Edwards of Overhead Door (Sacramento) on May 28,1992 to gain access to the Lodi Facility for the following day. Also, BSK informed Mr. Michael J. Infurna, Jr. ' that work would start on June 1, 1992. On May 29, 1992 two representatives of BSK cemented a 2%,-foot long, 8-inch ' diameter PVC schedule 40 riser inside of each monitoring well vault box with a quick-set grout mix. The riser installations are illustrated on Photographs #2 and #3, Figure 3; Photographs #10, #14, and #15, Figure 4; and ' Photographs #18, #19, and #20, Figure 5. 1.4 Mobilization/Demobilization - BSK and Halliburton mobilized and were on- site at 08:00 on June 1, 1992. Upon arrival at the site, a reconnaissance for 1 Associates