Laserfiche WebLink
i <br /> Summary of Well Destruction and Request for Final Letter of Closure 2 I <br /> 7-Eleven Store No.20304,455 Grant Line Rd.,Tracy,CA _ October 14,1999 <br /> i <br /> 20 psi of air pressure was applied to the top of each casing using an air compressor and/or a pressurized i <br /> I air tank. The casings of wells MW-1, MW-3, MW-4, MW-5, and GWE-1 located in the planter areas were <br /> drilled out to a depth of approximately 3 feet BGS. The resultant boreholes were grouted to approximately <br /> 2 feet to 2.5 feet BGS and topped with clean top soil material. Following the grouting of wells MW-2, MW-6, <br /> MW-16, MWA 1, MW-15, and GWE-2 each well were topped with hot patch asphalt or concrete to match <br /> the existing surface grade. Field notes are included in Attachment 2. <br /> The well casings, traffic boxes, including the cement well seal and associated concrete generated during <br /> the destruction of the wells.were disposed of.at a local landfill.. . <br /> Request for Final Letter of Closure <br /> Based on the proper destruction of the remaining site-related groundwater monitoring and groundwater <br /> extraction wells, IT Corporation, on behalf of 7-Eleven, Inc., requests that a final letter of closure be <br /> I submitted by the SJCPHS for the site. <br /> Please call our Concord office with any questions or comments regarding the well destruction activities. <br /> f <br /> Sincerely, <br /> IT Corporation IT Corporation <br /> Submitted by: Approved by: <br /> . r <br /> r ' <br /> u_ <br /> David Bean E. K. Simonis R.G. <br /> i <br /> Staff Geologist Senior Geologist <br /> a <br /> i <br /> WO.4422 <br /> a <br /> c: Mr. Mike Smith - California Regional Water Quality Control Board -Central Valley Region <br /> Attachments <br /> 1. Figures <br /> 2. Field Notes <br /> i <br /> it <br /> k <br /> b <br /> k <br /> I <br /> 6 <br /> r <br />