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y . • <br /> 1 <br /> Environmental Health Department, San Joaquin County 5576.4.200.01 <br /> Westgate Apartments March 17, 2006 <br /> WORK PLAN FOR WELL ABANDONMENT Page 2 <br /> SCOPE OF SERVICES <br /> Our proposed scope includes drilling out the existing well and grouting the subsequent borehole. <br /> We will coordinate with a licensed drilling contractor to over-bore the well to a depth of <br /> approximately 15 feet bgs, or the bottom of the previous boring, whichever is deeper. Drilling <br /> will be accomplished using a truck-mounted hollow stem auger drill rig equipped with 8-inch <br /> diameter augers in order to remove the annular seal around the well. Given that the subsurface <br /> material is not suspected to be contaminated, drilling cuttings will be discharged on the ground <br /> surface near the well. <br /> Once the well has been adequately removed the borehole will be grouted with neat cement by <br /> tremie method to 5 feet bgs. Bentonite pellets will be placed in the remaining five feet to the <br /> ground surface. Bentonite pellets will be adequately hydrated. <br /> SCHEDULE <br /> We plan to complete the well destruction on March 23, 2006,pending approval of this work plan. <br /> If you have any questions on any portion of this work plan, please call and we will be glad to <br /> discuss them with you. <br /> Very truly yours, <br /> ENGEO INCORPORATED Reviewed by: <br /> ac CrawfordV <br /> uncan Hickmott <br /> zc/sc:workplan <br /> Attachments: Site Plan <br />