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x <br /> 701 University Avenue,Suite 200 <br /> Sacramento,California 95825 <br /> ATC <br /> Phone 916.923.1097 <br /> Fax 916.923.6253 <br /> Shaping the Future <br /> January 10, 2012 <br /> Attn: Nuel Henderson <br /> San Joaquin County Environmental Health Department <br /> 1868 E. Hazelton Avenue <br /> Stockton, CA 95205 Transmitted via email <br /> Re: Request for Variance of Environmental Fieldwork at <br /> 2376 N. Tracy Boulevard Tracy, CA 94376 <br /> Dear Mr. Henderson, <br /> Cardno ATC (ATC), on behalf of Phillips 66 (P66), is conducting well destruction activities for the <br /> environmental case associated the property at 2375 N. Tracy Boulevard in Tracy, CA. Thus far, <br /> ATC has successfully destroyed nine of 15 wells associated with this case. However,the remaining <br /> six wells have subsurface utilities located in close proximity. These remaining wells were originally <br /> proposed to be destroyed by over-drilling to total depth. In ATC's opinion, the drilling activities <br /> necessary to perform the originally proposed destruction methods poses significant safety and <br /> property damage risks and, therefore warrants a variance to standard well destruction protocol. <br /> Therefore, ATC requests a variance to destroy these wells without using any drilling or digging <br /> equipment. We propose destruction of the wells via pressure grouting followed by removal of <br /> associated well boxes by jack hammering of surface concrete and hand digging. <br /> ATC has considered the possibility of de-energizing electric lines and contacted PG&E regarding <br /> conflicting electrical lines near well locations MW-1, MW-3, MW-5, MW-8, and AMW-6. PG&E <br /> indicated that, to shut down high voltage electricity lines would disrupt power to traffic lights at the <br /> intersection of N.Tracy Blvd. and Grant Line Road.Additionally,ATC encountered a conflict with an <br /> AT&T fiber optic line at well location MW-9, that would require AT&T give permission to operate <br /> drilling equipment in close proximity to their fiber optic lines. AT&T has denied all requests. <br /> Attached is a figure showing the well locations,well logs for each of the conflicted wells,and photos <br /> showing the proximity of utilities to the wells. Upon your approval we will schedule and implement <br /> the destruction of these wells by our proposed alternate method.We appreciate your consideration <br /> of this matter. <br /> Please contact me if you have any questions or concerns. <br /> Sincerely, <br /> Cardno ATC <br /> Gabe Stivala, P.G. <br /> Senior Project Manager <br /> cc: Mr. Harlan Knoll, SJEHD (via email) <br /> Mr. Ed Ralston, Phillips 66 (via LiveLink upload) <br /> Attachments <br />