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' Mr. James L.L. Barton • Former Buffalo Tank <br /> September 8, 2011 Stockton, California <br /> tPage 2 of 3 <br /> completed by a licensed C-57 drilling contractor. Well destruction activities are detailed in the <br /> following sections. <br /> ' Permitting <br /> Prior to beginning work, well destruction permits will be procured from the SJCEHD. SGI will <br /> notify the SJCEHD and other necessary parties at least three days prior to initiating field work. <br /> Utility Surveys <br /> ' The well destruction locations will be marked using white paint. Underground Service Alert <br /> (USA) will be contacted at least 48 hours prior to sub-surface activities. A professional <br /> t underground utility locating company will be utilized to delineate other potential buried utilities at <br /> well destruction locations. <br /> ' Well Destructions — Pressure Grout <br /> Monitoring wells (MW-1 through MW-3) will be destroyed by pressure grouting. Casings will be <br /> grouted using a cement/bentonite-grout from the total depth of the casing up to two feet below <br /> ground surface (bgs). Grout will be pumped into each location using a tremie pipe at a pressure <br /> of approximately 150 pounds per square inch (psi) to insure sufficient distribution of the grout <br /> through well screens and into the surrounding well filter pack. The traffic rated well boxes will <br /> be removed using a jack hammer and the resultant void will be filled with concrete and matched <br /> ' with finished grade. <br /> Waste Management <br /> Soil cuttings and water generated during drilling and well obstruction removal activities will be <br /> stored on-Site in properly labeled 55 gallon containers and/or on plastic visqueen pending waste <br /> characterization. Waste will be disposed in accordance with applicable laws and regulations <br /> and as approved by the CRWQCB. <br /> ' Report <br /> A Well Destruction Report will be prepared and submitted to the CRWQCB to include a <br /> ' summary of well destruction activities. <br /> ' PROJECT SCHEDULE <br /> SGI plans to commence work immediately following the approval of the Work Plan by <br /> ' CRWQCB. SGI estimates well destruction activities will take one day to complete. <br /> Completion of well destructions at the Site will satisfy the CRWQCB requirements for no further <br /> ' action. <br />