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To evaluate disposal options for the waste purge water from MW-1, MW-2 and MW-3, <br /> wastewater samples were collected for laboratory analysis From each of the nine individual <br /> drums of wastewater, one 40 milliliter sample was collected from the surface of the contained <br /> water The laboratory was instructed to combine the nine water samples into three composite <br /> samples for analysis of TPH-as-gasoline, BTEX and MTBE by Modified EPA Method 8015/8020 <br /> The three drums of wastewater from MW-2 were found to contain 55 ppb of MTBE and non- <br /> detectable concentrations of TPH-as-gasoline and BTEX The origin of the wastewater in the <br /> remaining six drums is MW-1 and MW-3, however, the labeling of these drums was no longer <br /> legible so they were designated in the field as drum A, B, C, D, E and F The samples from <br /> drums A, B and C were composited in the laboratory and found to contain no detectable <br /> concentrations of TPH-as-gasoline, BTEX or MTBE The samples from drums D, E and F were <br /> also composited in the laboratory and found to contain 6 ppb of MTBE and non-detectable <br /> concentrations of TPH-as-gasoline and BTEX The laboratory reports and chain-of-custody <br /> documents are included in Appendix B <br /> 1 <br /> 4 <br /> 1 <br />