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e,t-e~ 1~7b dl•~lrf•i rkOM Ground Expiorat ion TO <br />7219298 P.07 <br />Ground fixptontiion Company, InG <br />18610 West Highway 72 <br />Arvada, Colorado ti0007-8237 <br />(303) 420-9977. Fax (3013) 420-9973 <br />Highlight of Projects <br />Ground Exporation Company, Inc. has based our reputation and is proud of being one <br />of the premiere drilling companies in the Denver Basin, which specializes in the more <br />difficult drilling projects- These are but a few of the projects that we have completed in <br />the past few years, which have required grouting and surface casing, careful drilling <br />programs to obtain the desired resuRs. (Many of our clients request that we sign a <br />confidentiality statement that releases no information or little information concerning <br />the site condition or the drilling program, including their names.) <br />DADS LandTill (Lowry Landfill): <br />Ground Exploration Company, Inc. was hired by the owners consultant <br />to drill monitoring wells to determine if the soils directly below the trash <br />envelope were saturated and wet. The difficulty was that the trash was <br />80' to 90' thick and the owner did not know the exact elevation in which <br />the soil would be encountered. The Colorado Health Department had <br />concerns that the soils directly beneath the envelope were saturated, <br />which was leading to contamination of the additional soils below the <br />landfill. <br />Ground Exploration Company, Inc. had to determine the exact <br />thickness of the trash and place a conductor casing that point. Another <br />problem was that the trash consisted of anything from household trash, <br />construction trash, metal of all sizes, and a occasional tire. The previous <br />contractor on the site was using mud rotary wRh little success in <br />determining the exact depth of the bottom of the trash. They were unable <br />to grout a conductor casing that would adequately satisfied the Cobrado <br />Health Department, as to the quality of the seal- Ground Exporation <br />Company, Inc. was selected for this project because our expertise in <br />drilling with large diameter hollow stem and grouting casings into place. <br />This project was accomplished as follows: <br />The wells were drilled using a 8.25' I.D. hollow Stem, which <br />creates a 12' O.D. hole. Samples were taken with a <br />standard split spoon, every 5' to approximately 80'. At that point <br />continuous samples were taken until the upper clay layer was <br />