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V X1117 Lone Palm Avenue, Suite B <br /> *Modesto, CA 95351 <br /> www.atc-enviro.corn <br /> 209.579.2221 <br /> " A S:3 O C I" A, T E-S I N G Fax 209.579:2225 <br /> FO L <br /> April 30, 2003 V 1v <br /> 54.17292.0002 <br /> MAY 0 1 2003 <br /> Mr..Jeff Wong ENVIR ONNIEN T HEALTH <br /> PERMIT/SERVICES <br /> ;San Joaquin County . <br /> Environmental Health Department r <br /> 30.4 E._Weber Street, Third Floor <br /> Stockton,CA-95202 <br /> Subject: Workplan for Destruction .of Groundwater Monitoring _Wells at " Stagg "High <br /> ' School, 1.621 Brookside Road, Stockton, California <br /> 'Dear .M.r. Wong: <br /> r <br /> I On behalf of the Stockton Unified-School District;;ATC Associates "Inc. has prepared this.well <br /> destruction workplan for the above referenced site. <br /> The,scope of work_in brief includes obtaining..permits, pressure grouting five monitoring wells, <br /> and preparing a summary report. The scope of work is. described in detail in the following <br /> paragraphs. <br /> SITE LOCATION <br /> The site is located oft the north side..Brookside Avenue_and the east side of McGaw Street, <br /> Stockton California, as shown on"Figurel: Stagg High School currently occupies the site. <br /> SCOPE OF WORK <br /> Field"Activities <br /> ATC proposes to.abandon monitoring wells MWl through MW5. Well locations are shown on <br /> Figure 2. The well boxes, locking plugs, and top."two.-feet of casing will be removed from each <br /> well prior to abandonment. All five-monitoring wells will.be abandoned by filling each .well <br /> casing and filter:pack-with a"neat cement/bentonite grout. The" grout will be emplaced by <br /> pressure grouting with a pressure-grouting"tool." <br /> Forprotection of the seal "at .the land surface, a hole at least two feet in diameter will be <br /> excavated' around the outside of"each welf casing-to a depth of approximately two feet below <br /> WA 17292.00021wp-wellabandonment.doe 1 <br /> ENVIRONMENTAL,-GEOTECHNICAL AND MATERIALS PROFESSIONALS <br />