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NOV-1e-2001 12: 16 P.04.20 <br /> x <br /> 10 September 2001 <br /> AGIr-NC Project No. 01-0861 <br /> Page 3 of 4 <br /> A solvent-like odor was noted in at least two samples collected from the stockpile. Therefore,the <br /> two samples were analyzed for volatile organic compounds (VOCs), in accordance with EPA. <br /> 1vlethod 8260, <br /> 3.0_ ANALYTICAL RESULTS, <br /> TPH.d was detected n all.20$amples,with concentrations renging from 240.milli$ram per kilogram <br /> (mg/Kg; equivalent to parts per million, ppm) to 2,500 mWK& averaging 1,01o,. mg/I{g. DI- <br /> leachable TPH-d was also detected in all 20 samples at concentrations ranging from 11 millig'ams <br /> W liter(mg/L, equivalent to parts per million)to 38 mg/L., averaging 22.15 mg1L. <br /> W-leachable Chromium VI was detected in all 20 samples collected from the stockpile at <br /> concentrations ranging from 10 miorograms pa liter (pglL; equivuient to parts*billions PPh)to <br /> 40 gg/L, and which averaged 26.5 n1L. <br /> Table 1 shows the Concentrations of each analyte detected in each sample; t1le laboratory report is <br /> in Appendix B. <br /> 4.o. DISCUSSION OF RESULTS <br /> According to the CVRWQCB letter 16 October 2000,the maximum and average concentrations of <br /> DI-leachable TPP-d in the samples from the MonierLifetile facilities resulted in a designated waste <br /> classification of-the tested materials- The maximum and average concentrations of DI-leachable <br /> TPH d m the samples from tike FTG site were higher than in-the Momcrl.ifeWe sample sets. <br /> The analytical results for Chromium VI did not exceed the soluble threshold limit concentration <br /> (STLC) of 5 mg/L for total chromium; which would place the waste in a hazardous waste <br /> classification (for-total chrpmium). klowever,'as noted in the California Regional Water Quality <br /> Control Board letter of 18 Iamiary 2001, the DMET analysis results in a dilution of the sample by <br /> a factor of 10, Multiplicatioa of the samples results would yield leaehatea with 100 to 400 pg/L <br /> Chromium VI, winch would exceed the Califorrda Public Health Goal, in Drinking Water of 02 <br /> gg/L',which would classify the waste as a.designated waste. <br /> 5.0. SUMC4RYAND CONCLUSIONS <br /> EIevated coaoemtrations ofl)Weacbable TPH-d and Chomium Vl would eachresult in a`designated <br /> waste' classification of the-waste tile stockpile at the FTG site. Asa designated waste, the material <br /> '. q�p,,,r�Geol�.ec,mnmeat mu <br />