| While performing an emissions upgrade at the Powers 21-22, X 22-02, 41-22, Robert Powers X 22-07 tank battery facility, soil with historical petroleum hydrocarbon impacts were encountered beneath the tank battery facility. There were no indications that the dumplines or production tanks were leaking. The volume of the release is unknown. On September 14, 2016, the release became reportable due to the volume of impacts removed. Excavation activities are ongoing at the site. Confirmation soil samples will be collected and submitted for laboratory analysis of TPH, BTEX, pH, EC, and SAR (if applicable). The analytical results and excavation details will be summarized in a supplemental report. A topographic Site Location Map showing the geographic setting of the release is provided as Figure 1. |