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Table 4e - STLC EPA WET 200.7 - Waller <br />(McAnaly) Property <br />Regulatory <br />Limit Analyte <br />Sample Identification <br />m /I <br />3.71 <br />Standard Error <br />T-4-4 <br />T-66-1 <br />T-66-3 <br />5 1 Lead <br />1 0.23 <br />1 7.5 <br />1 3.4 <br />Table 4e - STLC WET EPA 200.7 - <br />Waller (McAnaly) Property <br />Lead <br />Mean <br />3.71 <br />Standard Error <br />2.104384312 <br />Median <br />3.4 <br />Mode <br />#N/A <br />Standard Deviation <br />3.644900547 <br />Sample Variance <br />13.2853 <br />Kurtosis <br />#DIV/0! <br />Skewness <br />0.379958017 <br />Range <br />7.27 <br />Minimum <br />0.23 <br />Maximum <br />7.5 <br />Sum <br />11.13 <br />Count <br />3 <br />Confidence Level 80.01/6 <br />3.968067012 <br />Waste within the Waller (McAnaly) property has an average total lead concentration of 168.8 ppm. The <br />statistical analysis shows an 80% confidence level of 50.31 to 287.09 ppm. The California regulatory <br />limit (TTLC) for lead is 1000 ppm. Based on a two -tailed normal distribution, it is likely that total <br />concentration of lead in the fill areas does not exceed the TTLC. <br />The average STLC for lead is 3.71 ppm. The statistical analysis shows an 80% confidence level of —0.26 <br />to 7.68 ppm. The Califomia regulatory limit STLC for lead concentration is 5 ppm. Based on a two - <br />tailed normal distribution it islikcly that the total soluble lead concentration in the KI—la—re—as es exceed <br />waste limitations. <br />