Laboratory analytical data indicated a historical release was discovered beneath the aboveground storage tank during the Roach Bass T5N-R67W-S14 L01 Loc tank battery decommissioning. One soil sample, AST04, exceeded ECMC standards for 1,2,4-trimethylbenzene at 0.011 mg/kg, and 1-methylnaphthalene at 0.00682 mg/kg. This sample is located at the southern most AST, and on the same pad as the following releases: AST06, SEP03-FL, SEP04-FL, and PWV04-B. |