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URS <br /> November 18, 2010 06a <br /> Ms. Kathleen Amaru <br /> Associate Engineering Geologist <br /> Regional Water Quality Control Board <br /> Central Valley Region <br /> 11020 Sun Center Drive#200 <br /> Rancho Cordova, CA 95670 <br /> Re: Work Plan for the Abandonment and Replacement of Damaged Well MW-23-SP <br /> Deuel Vocational Institution Burn Pit(Fire Pit) <br /> 23500 Kassen Road,Tracy, California <br /> RESD Contract No.3023892 <br /> Dear Ms. Amaru: <br /> URS Corporation Americas(URS), on behalf of the State of California—Real Estate Services <br /> Division under Contract No. 3108938,has prepared this work plan for the abandonment and replacement <br /> of monitoring well MW-23-SP which was damaged by grass cutting equipment at the Department of <br /> Corrections Deuel Vocational Institution Bum Pit(site). <br /> PROPOSED SCOPE OF WORK <br /> • Perform a site visit; prepare a health and safety plan (HASP) and coordinate work with the <br /> Central Valley RWQCB and San Joaquin County Environmental Health Department(SJCEHD). <br /> • Obtain a well abandonment and installation permit from SJCEHD. <br /> • Properly abandon well MW-23-SP by over-drilling to its total depth of 21 feet below ground <br /> surface (bgs) with 10-inch, outside-diameter (OD), hollow-stem augers and tremie grout with a <br /> Portland cement grout containing less than 5% bentonite powder to near surface. Surface <br /> completions will be completed to match the surrounding ground surface. <br /> • Install a replacement well (MW-23R-SP) approximately 10 feet from it original location to 21 <br /> feet bgs using 8-inch OD,hollow-stem augers. <br /> • Place drill cuttings and waste water generated during the activities in labeled 55-gallon <br /> Department of Transportation(DOT)-approved steel drums and store on site,pending disposal. <br /> The sections below include discussions of permitting, project health and safety, utility clearance, well <br /> abandonment, well installation,waste disposal, and report preparation. <br /> URS Corporation Americas <br /> 2870 Gateway Oaks Drive, Suite 300 <br /> Sacramento, CA 95833 <br /> Tel: 916.679.2200 <br /> Fax:916.679.2900 <br />