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is <br /> GROUND ZERO ANALYSIS, INC. I <br /> ' 1I <br /> 1714 Main Street J <br /> Escalon,California 95320-1927 <br /> Telephone: (209)838-9888 [E <br /> �� <br /> Facsimile: (209)538-9883 rE <br /> April S, 2004 APR 0 9 2004 <br /> ENVIRONMENT HEALTH ii <br /> PERMIT/SERVICES <br /> Mr.Harlin Knoll <br /> i <br /> San Joaquin County " <br /> Environmental Health Department <br /> 304 East Weber Avenue, Third Floor 1 <br /> Stockton, CA 95202 <br /> l <br /> Subject: Monitoring Well Destruction Summary Report <br /> 8960 W. Walnut Grove Road,Thornton, CA(Figure 1) <br /> Dear Mr, Knoll <br /> MThis letter report summarizes the monitoring well destruction activities conducted at the subject site. The; <br /> locations of wells are shown on Figure 2. Copies of the well logs for monitoring wells MWl through MW7 ares <br /> included in Attachment A. Copies of the well destruction permits issued by San Joaquin County Environmental i <br /> Health Department(EHD)are included in Attachment B. ! <br /> On March 23, 2004, Mr. Sean Garvey of Ground Zero supe ised V&W Drilling (C57-720904) during they i <br /> destruction of wells MW I through MW7. Mr. Harlin Knoll of EHD observed field activities and conducted the' <br /> grout inspection. Wells MWI through MW7 were destroyed by overdrilling the annular seal, backfilling the well <br /> casing with neat cement grout until full, extracting the well casing and adding additional grout to approximately 1, <br /> foot below surface grade. The remaining void for each respective borehole was backfilled with native soil to] <br /> grade. <br /> In addition, approximately 320 gallons of liquid waste were trap€sported to Riverbank Oil Transfer by American! <br /> Valley Waste Oil on March 31, 2004. A copy of the load ticket is included in Attachment C. No contaminated <br /> soil or groundwater waste remains on site. All corrective actions have been completed for the site under they <br /> direction of EHD and the Regional Board. We understand that a No Further Action/Case Closure letter will be <br /> forthcoming from your office. �! <br /> Please feel free to call the undersigned at(209)838-9888 if you have any questions or comments. <br /> Respectfully, <br /> Ground Zero Analysis, Inc. <br /> John P.Lane <br /> CA Registered Geologist 6795 <br /> cc: Mr. James L.L. Barton, RWQCB <br /> Mr. Patrick D. Riddle, Attorney at Law <br /> Mr. Art Wyatt,Barnyard Corporation <br /> G:\GROUNDZE\Barnyard-Manser\ReportslW ELLDSTRPT.doc <br />