| Laboratory analytical indicated a historical release occurred at the Shable USX AB 11-14P decommissioned wellhead. Three soil samples exceeded ECMC standards for naphthalene at 0.164 mg/kg, TPH at 1,633.4 mg/kg, 1,2,4-trimethylbenzene at 0.137 mg/kg, 1,3,5-trimethylbenzene at 0.292 mg/kg, 1-methylnaphthalene at 0.819 mg/kg, 2-methylnaphthalene at 0.385 mg/kg, benzo(a)anthracene at 0.019 mg/kg. This location lies within a Pronghorn Winter Concentration Area high priority habitat. |