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i <br /> 4 <br /> =y I <br /> 31 December 2008 a <br /> AGE-NC Project No. 97-0360 r <br /> Page 2 of 2 <br /> l depth with 8-inch diameter hollow stem augers and a solid drive lead-bit and the extraction well was <br /> removed by over-drilling to its total depth with 15-inch diameter hollow stem augers and a solid ! <br /> drive lead bit Well borings were then grouted to near surface using aportland cement grout mixture. <br /> A ratio of OK gallons water for every 94-pound sack of portland cement was utilized in preparation <br /> of the grout mixture.Borings for all wells were completely backfilled to 0.5 feet below surface grade <br /> with neat cement and then to surface grade with concrete. I' <br /> kkS � <br /> 11 <br /> On 31 December 2008,non-hazardous purge water/rinseate(generated from monitoring events and <br /> well destructions) and drums of soil cuttings and solid waste (generated from well destructions) <br /> containerized in 55-gallon drums were removed from the site by Advanced Chemical Transport,Inc. <br /> (ACT)of Merced,California.Non-hazardous waste was disposed at Riverbank Oil Transfer located <br />` in Riverbank, California. Non-hazardous waste manifests will be transmitted to the EHD upon <br /> receipt of the manifests from ACT. <br /> If you have any questions or require further information,please contact our office at(800)511-9300. <br /> Sincerely, ;! <br /> Advanced GeoEnvironmental, Inc. <br /> ,�S514NAL GEa/ <br /> * No. .7473 <br /> Ally L. C ita William R. Little <br /> i Project Scientist Senior Project Geologist sr9rF <br /> OF <br /> GA1�F <br /> California Registered Geologist Na. 3 <br /> i <br />! <br /> Enclosures <br /> cc: Mr. Monty Warren <br /> Mr. James Barton, CVRWQCB <br /> i <br /> 'i <br />!I Advanced GeoEnvironmental,Inc. <br /> I <br />