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Frow\ ~' <br />~i <br />-\~ ~ ~. t~ <br />CONSTflUCTION, INC. <br />1225 South 7th Street <br />Grand Junction, Colorado 81501-7791 <br />(970) 242-5370 FAX (970) 245-7716 <br /> <br />May 17, 2005 <br />M~±Y t ~ 20Q5 ~' <br />Mr. Greg Stasinos <br />~' Colorado Department of Public Health & Environment `~ <br />Emergency Management Program <br />4300 Cherry Creek Drive South, Building A3 <br />Denver, CO 80246 <br />RE: Contaminated Soil Cleanup, Report No. 2005-181 <br />t2$cf~ sssc ,~$ ~,~'.bR'~tA a?Ti ti/st~agY <br />,/ <br />dun,-t (2a~U~t ~l ~ ~-I (PO-I31'~ <br />H sPaoF,o-t Da}e <br />Dear Mr. Stasinos, <br />This letter provides documentation of cleanup of a diesel spill that occurred Mazch 28, 2005 <br />Reference CDPHE Report No. 2005-181, and Elam Construction letter dated April 1, 2005). The <br />contaminated soil was removed from the affected azea and initially stored in a lined containment <br />area near the spill. Although there were no visib]e signs of pollutants within the nearby back <br />water channel of the Yampa River a water sample was obtained and tested for total petroleum <br />hydrocarbons. The test report states no presence of petroleum contamination {see attached report <br />dated March 31, 2005). <br />The contaminated soil was excavated between the dates of March 28 and April I, 2005, and was <br />placed in a lined containment area. Once all visible contaminated soil was removed, three <br />samples were obtained from within the excavated area and tested for Total Petroleum <br />Hydrocarbons. The test results for all three samples were below the threshold of 500 ppm, which <br />is considered the limit for petroleum contaminated soil. Even though all tests were below the <br />threshold limit, additional soil was removed in the area of Sample BR-1 since that test resulted in <br />an elevated TPH result. A map showing the location of test samples along with lab results are <br />attached. <br />An inspection by Steve Shuey of the Colorado Division of Minerals and Geology was conducted <br />on April 12, 2005. During this inspection, Mr. Shuey noted several small "pockets" of residual <br />diesel contamination. This soil was excavated and placed within the containment azea. The <br />affected area was cleaned to the satisfaction of the Division. The excavated area was then <br />backfilled with pit run material to provide a stable and uniform surface. <br />As indicated in Elam's letter dated April 1, the contaminated soil will be treated on site. Methods <br />for on-site treatment will include evaporation of volatile components and processing the material <br />through Elam's on-site asphalt plant. It is estimated that approximately 300 cubic yards (500 <br />tons) of material will require treatment. <br />4-12•vS`'~1 <br />