| Historical impacts were discovered during abandonment activities at the Huffman 16-2/Huffman 9-2A/ Helen Marie Purse B#2 production facility. Groundwater was encountered within the excavation at approximately 4 feet bgs. On July 19, 2018, a groundwater sample (GW01) was collected and submitted to Origins Laboratory for analysis of benzene, toluene, ethylbenzene, and total xylenes (BTEX) by USEPA Method 8260C. Analytical results received on July 20, 2018, indicated that the benzene concentration in groundwater sample GW01 was out of compliance with State standards. Site assessment activities are ongoing and will be summarized in a forthcoming Supplemental Form 19 Spill/Release Report. A topographic Site Location Map showing the geographic setting of the release is provided as Figure 1. The groundwater sample location is illustrated on Figure 2. The groundwater analytical results are summarized in Table 1 and the laboratory analytical report is provided as Attachment A. |