| 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, AST06, exceeded ECMC standards for 1,3,5-trimethylbenzene at 0.037 mg/kg, 1-methylnaphthalene at 0.0662 mg/kg, and 2-methylnaphthalene at 0.12 mg/kg. This sample is located at the northern most AST, and on the same pad as the following releases: AST04, SEP03-FL, SEP04-FL, and PWV04-B. |