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ATC Associates Inc. <br /> vtT' <br /> C 1117 Lone Palm Avenue,Suite 201 <br /> Modesto,California 95351 <br /> 209-579-2221 <br /> . . . <br /> Fax:209 <br /> - A S S O C I'"A T E S 1 N C. ` <br /> I f <br /> set at a depth of 65 feet bgs.' The well abandonment was conducted by Woodward Drilling <br /> Co. Inc, State C57 License No. 710079. An annular space of 20 inches was excavated <br /> around each well to a depth of 3 feet bgs. The PVC pipe was cut so approximately 6 inches <br /> of pipe remained above grade. Neat cement grout was pumped into each well via tremie, <br /> until the pipe was completely filled. At each well a minimum of 25 psi of pressure was <br /> applied for a minimum of ten minutes. The wells were then backfilled with additional grout <br /> until the excavation was filled to a minimum of one foot above the top of the PVC pipe. The <br /> remaining excavation was backfilled with sand and a concrete'cap was installed. <br /> i r <br /> Investigative Derived_ Waste <br /> �I <br /> Soils generated by the abandonment of the monitoring wells were stored in Department of <br /> { Transportation approved drums. Also drums containing ground water generated during the <br /> site investigation were present at the site. The soil generated during the well abandonment <br /> activities was tested by a state certified laboratory and the results indicate that no chemicals <br /> of concern were detected above the laboratory detection limits. The laboratory report is <br /> it included in Attachment 1. The waste drums were removed from the site and were properly <br /> disposed of. Manifests for these drums are included in Attachment 2. <br /> These actions complete the requirements of the CVRWQCB and the SJCEHD to close the <br /> site. <br /> F <br /> j Please contact our office at (209) 579-2221 if you have any questions <br /> Respectfully submitted; - <br /> ATC Associates Inc. <br /> J Sellman �4NNE <br /> Ht] <br /> Staff Geologist iVISEX <br /> rn <br /> Q Na C047`M Q rtf <br /> G WI2 <br /> � Exp=—�-L— <br /> Jeanne Homsey, P.E. eP>, CIVIL ��' <br /> Registered Engineer No. C47410 9T�OF`�'A`,FQQ <br /> cc: Mr. Jay McIlrath, West Lane Fuels <br /> Mr. Jim Barton, RWQCB <br /> I <br /> C <br /> i <br /> Project No.54.26874.0001 <br />