Laserfiche WebLink
standing surface water located adjacent to the staging area. The locations of the additional <br /> samples are shown in Figure 2. <br /> 2. The samples were sent under proper chain-of-custody to Chromalab, Inc. for the following <br /> analyses: <br /> • Volatile organic compounds (EPA Method 8240), <br /> • Semi-volatile organic compounds (EPA Method 8270), <br /> • Soluble lead by WET, and <br /> • Reactivity, corrosivity and ignitibility (RCI). <br /> The laboratory results for the initial soil and water samples are shown in Table 1, and <br /> copies of the laboratory results are provided in Appendix C. <br /> 3. The composite sample from the small stockpile was reported to contain low levels of <br /> various volatile and semi-volatile organic compounds, including polynuclear aromatic <br /> hydrocarbons (PNA's). Volatile and semi-volatile organic compounds were not detected in <br /> samples from the excavation bottom,background, and water. Elevated levels of soluble <br /> lead were reported in the composite sample from the small stockpile, and from the <br /> background sample. <br /> 4. Following a review of the laboratory results from the January 29, 1993 sampling event, <br /> additional samples were collected on February 3, 1993 to further evaluate background <br /> concentrations of lead identified during the preliminary sampling and to evaluate the <br /> presence of lead in surficial soils affected by wood chips to evaluate potential disposal <br /> options for the soil. The supplemental soil samples included three additional background <br /> soil samples, three soil samples from the surficial soils containing wood chips, one <br /> additional sample from native soil below soils affected by the wood chips, and one <br /> additional composite sample from the small stockpile. The locations of the additional <br /> samples are shown in Figure 2. The samples were sent to Chromalab, Inc. and analyzed for <br /> soluble lead by WET. <br /> 5. The laboratory results for the supplemental soil samples are shown in Table 1, and copies <br /> of the laboratory results are included in Appendix C. Elevated levels of soluble lead were <br /> detected in four of the samples, including one additional background sample, one sample <br /> from the excavation bottom, and two samples from the surficial soils affected by the wood <br /> chips. <br /> 4 <br /> ENVIRONMENTAL SOLUTIONS <br />