Laboratory analytical data indicated a historical release was discovered at the separator dump line during the Knaub 09-12G tank battery decommissioning. One soil sample, SEP01-DL, exceeded ECMC standards for 1,2,4-trimethylbenzene at 2.4 mg/kg, 1,3,5-trimethylbenzene at 1.8 mg/kg, 1-methylnaphthalene at 0.0820 mg/kg and 2-methylnaphthalene at 0.373 mg/kg. The supplemental Form 27 will be submitted for remediation project number 31530 detailing the remedial site plan, document number 403808229. |