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roc-co i'77b Ui~~2rl'I hKUl9 Uround ~xp lorat ion TO 7219298 P.09 <br />telescopic casing using up to a 12" casing in the upper alluvium to a 2' <br />Stainless Steel well. After each of the conductor casings were drilled to <br />the desired depth the complete drill string would have to be thoroughy <br />decontaminated and prior to continuing drilling. The mud tanks or <br />anything that had came into contact.with the contamination would be <br />thoroughly decontaminated, prior to advanang the boring, beyond the <br />conductor casing. These holes were drilled with Air Rotary, Mud Rotary, <br />Auger, and the bedrock was cored using NX Wireline, and NC Wiretine. <br />The existing 700' deep plus water wells were abandoned. <br />Lowry Air Force Base: <br />Ground Exploration Company, Inc. has worked at the Lowry Air Force <br />Base for over 10 years drilling monitoring wells around underground <br />storage tanks and throughout the area, including abandoned landfills. <br />We have been very active in drilling wells since it has been determined <br />that this base would be closed. We have been involved in the closure of <br />the base since the last three year. Lowry Air Force Base has had <br />numerous landfills dating back to the 1940's, when it was active air force <br />base. No control was done on these landfills as they were being filled. <br />Ground Exploration Company, Inc. drilled numerous holes through these <br />landfills. Numerous plumes of shallow groundwater were determined to <br />have some contamination. Ground Exploration Company, Inc. had <br />drilled throughout the site to determine were these plumes were. <br />We also drilled deep wells in which conductor casing was placed using a <br />12" diameter hollow stem auger drilled to the bedrock. We placed a 8" <br />schedule .188" wall steel casing, which was grouted to the surtace. After <br />allowing the grout sufficient time to harden the tiring was advanced to <br />the second aquifer. Care was taken to ensure that no cross <br />contamination was made from the upper aquifers to the lower aquifers. <br />Rocky Flats Industrial Site In North Jefferson County CO: <br />This site was a manufacture of nuclear weapons triggers tram the mid <br />1950's. This has been a high profile site which has radioactive and <br />solvent contamination scattered throughout the site. Ground Exploration <br />