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' CGRS, Inc. • • <br /> ' agitated test where as the SGCLP test is not. The SGCLP test was conducted at CSU with the <br /> ' collected water samples sent to Analytica Environmental Labs for chemical analyses. <br /> ' • Sulfate • Chloride • Fluoride • Cyanide <br /> • Mercury • Nitrite- Nitrate <br /> • 10 other metals from the following list of 20 metals (Aluminum, Antimony, <br /> Arsem B Beryllium Boron Cadmium Chromium, Cobalt, Copper, Iron, <br /> Lead, Lithium, Manganese, Nickel, Selenium, Silver, Thallium, Vanadium and <br /> Zinc). Conductivity and pHof the leachate was measured at CSU prior to <br /> sending the sample to the laboratory for chemical analysis. <br /> ' 3.0 ANALYTICAL RESULTS <br /> ' 3.1 "Sequential Extraction Leaching Procedure"(SELP) <br /> Analytical results for the SELP are presented in Table 2. As mentioned, the purpose of the SELP <br /> ' testing was to estimate the maximum leaching capability of a material. In general, substantial <br /> concentration reductions were observed in second extraction analyses. Of the metals analyzed, at <br /> ' all pHs Aluminum, Boron, Iron and Manganese appeared to be the most leachable. None of these <br /> elements are listed in the primary drinking water standards. It appears that variations in pH have <br /> some effect in leaching characteristics of the sample set. At a pH of 8.5, there were 14 elements <br /> that exceeded standards in samples obtained from Cherokee Silo Ash 2/3. These concentrations <br /> ' were generally much higher than other ash samples as well. Recycled asphalt had the next highest <br /> number of elements that were in excess of drinking water standards for metals. <br /> 1 At a pH of 7, samples obtained from Class F Silo Ash with Gypsum appeared to be the most <br /> ' leachable and at a pH of 5, samples obtained from the recycled asphalt had the most elements <br /> exceeding drinking water standards. Of the nonmetals fluoride appeared to be the most leachable <br /> ' compound, insofar as having the most number of samples exceeding the agricultural water quality <br /> standard. <br /> ' 3.2 "Toxic Characteristics Leaching Procedure"(TCLP) <br /> The results of TCLP testing are presented in Table 3. A review of Table 3 shows that none of the ♦ <br /> samples tested exhibited characteristics of a hazardous waste. Overall, analyte concentrations were , th <br /> 7 <br />