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Show • WEST DEBRIS SITE A0l CHARACTERIZATION SAMPLING REPORT INTRODUCTION In February 1995, 11 characterization samples were collected from the Arthur West Debris Site. The Arthur West Debris Site is located on Kennecott Utah Copper Corporation (Kennecott) property approximately 2000 feet west of the Arthur Administration Building and 800 feet south of State Highway 201. The samples were analyzed for total arsenic, cadmium, lead, and selenium concentrations. The results of the analysis indicated elevated concentrations of lead and/or arsenic in four of the samples. Based on the analytical results and field observations, there are an estimated 3100 cubic yards of metal contaminated material at the site. LOCATION AND DESCRIPTION • The Arthur West Debris Site is located on Kennecott property approximately 2000 feet west of the Arthur Administration Building and 800 feet south of State Highway 201 (Dwg. No. 507-T0133). The site covers an area of approximately I.I acres (50 feet x 1000 feet) and is located immediately north of an access road, on a moderate to gently sloping historic beach terrace. Sandy limestone and quartzitic bedrock outcrop locally at the site. Debris piles up to 8 feet tall and I 00 feet long are scattered throughout the site. The debris piles consist of predominately soil, wood, slag, a tar-like substance, glassware, crucibles, metal shavings, concrete, bricks, and miscellaneous building materials. SAMPLE COLLECTION A total of 11 characterization samples were collected from the West Debris Site (Dwg. No. 507T-0133). Samples were collected of debris pile materials and from areas between the piles that appeared to be unaffected by the debris. Samples were collected from the surface or from Oto 4 inches below the surface. In addition, samples were collected around the perimeter of the site to define the limits of the contaminated area. All samples collected were composite samples. Sample sites were surveyed using the Global Positioning System. ANALYSIS AND RESULTS • The samples were analyzed for arsenic, lead, cadmium, and selenium concentrations at Datachem Laboratory using the United States Environmental Protection Agency (EPA) Methods 3050 and 6010. One sample was split as part of Quality Assurance and Quality Control (QA/QC) procedures. The split sample was analyzed at Kennecott Environmental Laboratory. Table I lists the total metals analytical results. Table 2 compares the split sample analytical results. A total of six samples were collected of debris pile materials. Three of these samples contained elevated lead concentrations (4100 to 65000 parts per million (ppm), average: 48000 ppm) and AOlcrpt.wpd• July I, 1996 Rev. 0 |
