| Laboratory analytical data indicated a historical release was discovered beneath an above ground storage tank during the Wiedeman 25-5 tank battery decommissioning. One soil sample, AST04, exceeded ECMC standards for 1,2,4-trimethylbenzene at 0.046 mg/kg, 1,3,5-trimethylbenzene at 0.019 mg/kg, naphthalene at 0.018 mg/kg, 1-methylnaphthalene at 0.0439 mg/kg, and 2-methylnaphthalene at 0.0961 mg/kg. The supplemental Form 27 will be submitted for remediation project number 34243 detailing the remedial site plan, document number: 403827428. |