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04 May 2005 <br /> AGE-NC Project No. 04-1129 <br /> Page 2 of 2 <br /> 1111 portland neat cement and not more than 6 gallons of water per 94-pound sack of cement. Once <br /> the wells have been properly backfilled the grout mixture will be placed under pressure for 5 minutes <br /> to penetrate the existing filter pack. After penetration of the filter pack each well will have the top <br /> 5-feet of casing drilled out utilizing a CME-75 drill rig equipped with 20-inch diameter hollow stem <br /> or solid flight auger and subsequently backfilled with neat cement. <br /> If you have any questions or comments, please contact our office at (209) 467-1006. <br /> Sincerelv, <br /> Advanced GeoEnvironmental, Inc. <br /> C istopher Miller William R. Little <br /> Environmental Specialist Senior Project Geologist <br /> California Professional Geologist No. 7473 <br /> cc: Mr. Dennis Kim <br />