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<br /> <br />Table 2. CIS / Slud a Leach Test Anal ical Methods <br />~` <br />r <br />,~ <br />L~'' Fn <br />f~'" <br />i~~ <br />r~~'~iP TCLPAoalysis <br />(EPA Method 1311-modified) SPLPAoalysis <br />(EPA Method 1312) <br />Aualyte EPA Method Number EPA Method Number <br />Arsenic 206.2 7061 <br />Antimony 204.2 NA <br />Barium 208.1 7080 <br />Beryllium 210.2 NA <br />Cadmium 213.1 7130 <br />Hexavalent Chromium 218.1 7190 <br />Lead 239.2 7420 <br />Mercury 245.1 7470 <br />Nckel 249.1 7520 <br />Selenium 270.2 7740 <br />Silver 272.1 NA <br />Thallium 279.2 NA <br />Aluminum 202.2 7020 <br />Iron 236.2 7380 <br />Manganese 243.2 7450 <br />Magnesium 242.1 7460 <br />Calcium 215. I 7140 <br />Sodium NA 7770 <br />pH 9045 150.1 <br />Conductivity 120.1 120.1 <br />Sulfate 375.4 377.1 <br />Chloride NA 325.1 <br />1,.~...,. t.~^ <br />The first leach test performed was the Toxicity Characteristic Leaching Procedure ,TCLP, (EPA Method <br />1311). Test duration was approximately 18 hours. The resulting leachate from the modified TCLP test <br />had an alkaline pH (12.8), high conductivity (14,700 umhos), elevated sulfate (6,300 mg/L), but the only <br />minor or major metals detectable were calcium (264 mg/L) and aluminum (0.55 mg/L). <br />KS•9903-02 Page 6 K-S &Compeny <br />August 16, 1999 Copyright 1999 <br />