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Table 3e - STLC WET EPA200.7 - Beard <br />Property <br />Regulatory <br />Limit <br />Analyte Sample Identification <br />3.06 <br />mg/I <br />2.44 <br />Median <br />3.06 <br />T-65-1.5 <br />T-65-3.5 <br />5 <br />Lead 5.5 <br />0.62 <br />Table 3e - STLC WET EPA <br />200.7 - Beard Property <br />Lead <br />Mean <br />3.06 <br />Standard Error <br />2.44 <br />Median <br />3.06 <br />Mode <br />#N/A <br />Standard Deviation <br />3.450681092 <br />Sample Variance <br />11.9072 <br />Kurtosis <br />#DIV/0! <br />Skewness <br />#DIV/0! <br />Range <br />4.88 <br />Minimum <br />0.62 <br />Maximum <br />5.5 <br />Sum <br />6.12 <br />Count <br />2 <br />Confidence Level (80.0%)17.50955041 <br />Waste within the Beard property has an average total lead concentration of 25 3 n, art_ _ s per million <br />(ppm). The statistical analysis shows an 80% confidence level of 10.77 to 29.83 npm The <br />California regulatory limit (TTLC) for lead is 1000 ppm. Based on a two -tailed normal <br />distribution, it is likely that total concentration of lead in the fill areas does not exceed the TTLC. <br />The average STLC for lead is3.06 nnm. The statistical analysis shows an 80% confidence level <br />of –4.45 to 10.57 ppm. The California regulatory limit STLC for lead concentration is 5 ppm. <br />Based on —atwo-tailed normal distribution, it is likely that the total soluble lead concentration in <br />the fill areas does exceed the STLC. <br />The average total arsenic concentration is 30.000 ,n„nm. The statistical analysis shows an 80% <br />confidence level of –19132.35 to 79,132.35 ppm. The California regulatory limit (TTLC) for <br />arsenic is 5000 ppm Based on a two -tailed normal distribution, the total concentration of arsenic <br />in the fill area does exceed the TTLC. The sample, T-65.3.5 was taken at a depth of 3.5 feet <br />below ground surface in Trench T-65. Sample T-65-1.5 was taken at 1.5 feet below ground <br />surface and analytical results of this sample in Table 3, above, indicates 0 ppm of arsenic. It t is <br />likely that the presence of io Arsenas indicated in sample T-65-3.5 is an anomaly and therefore its <br />presence may be in an isolated area of the waste. <br />C <br />C <br />