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. TABLE 2 <br /> CLARIFIER ANALYTICAL RESULTS <br /> -+ -- <br /> SAMPLE (PPM) (All BTXE values in PPB) <br /> ID LOCATION TPH BENZENE TOLUENE XYLENE ETHYLBENZNE <br /> C-1 -2 Boring 1 @ 2 ' 2370 ND 30 488 36 <br /> C-1 -5 Boring 1 @ 5 ' ND ND 76 353 70 <br /> C-1-10 Boring 1 @ 10 ' 2710 22 452 2030 460 <br /> C-2-2 Boring 2 @ 2 ' ND ND ND ND ND <br /> C-2-5 Boring 2 @ 5 ' ND ND ND ND ND <br /> C-2-10 Boring 2 @ 10 ' ND ND ND ND ND <br /> C-3-2 Boring 3 @ 2 ' 2970 ND ND ND ND <br /> C-3-5 Boring 3 @ 5 ' ND ND ND ND ND <br /> C-3-10 Boring 3 @ 10 ' ND ND ND ND ND <br /> 4.3 Discharge Pat <br /> Two 10 foot deep hand augered borings were successfully completed <br /> in the discharge pit. No apparent contamination, based on soil <br /> discoloration and odor, was observed in any of the samples. <br /> Discharge pit soil sample data for m8015 (petroleum hydrocarbons ) <br /> and 602 (purgeable aromatics) analyses is summarized in Table 3 . <br /> All analytical results for 8270 (semi-volatile) analyses were non- <br /> detectable with the exception of 2-Methylnaphthalene. 2, 540 PPB of <br /> the compound was detected in sample P-2-10 . <br /> Original laboratory report forms indicating minimum detection <br /> limits for each constituent are presented in the appendix. <br /> No hardpan layer was encountered in any of the borings . Boring <br /> logs are presented in the appendix. <br /> 4.3.1 Conclusions - Discharge Pit <br /> Based on analytical results, significant solvent and petroleum <br /> hydrocarbon soil contamination exists 10 feet below the discharge <br /> pit, however none is detectable above 7 feet. Significantly <br /> different soil conditions were encountered in both discharge pit <br /> borings compared to those completed at the washpad and clarifier. <br /> A heavy organic clay is present under the discharge pit to the <br /> total depth explored. Recommendations for further site <br /> investigation are presented in Section 5 . 3 . <br /> 17 <br />