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Page 1 of 2 ` <br /> 1 <br /> Mike Infurna [EH] <br /> From: Bare, Mark[Mark.Bare@stantec.com] <br /> Sent: Monday, May 09, 2011 8:53 AM <br /> To: Mike Infurna [EH] <br /> Cc: Moise, Ted (TRC Solutions.lnc) <br /> Subject: 76 Service Station No. 5886, Stockton Well Abandonment <br /> Attachments: Table 1 Revised b-9-2011.pdf <br /> Mr. Michael Infurna <br /> San Joaquin County Environmental Health Department <br /> 600 East Main Street <br /> Stockton, California 95202-3029 <br /> RE: Work Plan to Destroy Existing Monitoring and Remedial Wells <br /> 76 Service Station No. 5886 <br /> 2701 West March Lane <br /> Stockton, CA <br /> CRWQCB Case No.: 390892 <br /> SJCEHD Site Code No.: 1176 <br /> Dear Mr. Infurna, <br /> On behalf of ConocoPhillips Company, Stantec Consulting Corporation (Stantec) is submitting this <br /> revision to the Work Plan to Destroy Existing Monitoring and Remedial Wells (work plan) for 76 Station <br /> No. 5886, located at 2701 West March Lane, Stockton, California. The work plan was originally <br /> prepared in response to a March 3, 2011 letter from the San Joaquin County Environmental Health <br /> Department (SJCEHD). <br /> The scope of work consists of destroying all existing monitoring and remedial wells at the site in <br /> preparation for case closure, utilizing a combination of over-drilling and pressure-grouting. Upon <br /> review, it has been decided that the air sparge wells (AS-1 through AS-10)will be abandoned by <br /> attempting to over-drill using piloted knock-outs. Upon completion of drilling, the boreholes will be <br /> backfilled with cement grout, the well vaults will be removed, and the surface pavement repaired to <br /> match the surrounding pavement. If on-site conditions warrant a revision in this method, approval will <br /> be obtained from SJCEHD prior to altering the abandonment method. Attached Table 1 summarizes <br /> which wells will be over-drilled and which wells will be pressure-grouted. <br /> If you have any questions regarding the proposed scope of work, please contact Mark P. Bare. <br /> Sincerely, <br /> Stantec Consulting Corporation <br /> Mark P. Bare, P.G. <br /> Senior Geologist <br /> Stantec <br /> 3017 Kilgore Road Suite 100 <br /> Rancho Cordova CA 95670. <br /> Ph: (916) 384-0737 <br /> Fx: (916)861-0430 <br /> Cell: (916)752-0290 <br /> Mark;Bare@stantec.corn , <br /> stantec.com <br /> 5/16/2011 <br />