<_x0034_00830873>

400830873 19 2015-04-27T13:57:34.093-06:00 47120 KERR MCGEE OIL & GAS ONSHORE LP

P O BOX 173779

DENVER CO 80217-3779 Sam LaRue 970 336-3500 970 515-1238 Sam LaRue Senior HSE Representative 2015-04-27T13:57:34.093-06:00 2015-04-27T13:57:34.093-06:00 441557 in process jragan 2015-04-27T08:59:26.233-06:00 jragan Sam.LaRue@anadarko.com 0.00000 Sam.LaRue@anadarko.com jragan jragan 2015-04-27T13:57:31.423-06:00 400826939 400830873 CHESSON, BOB 2015-04-17T00:00:00-06:00 TANK BATTERY WELD SENW 5 3N 66W 6 N OTHER Cloudy and Rain, 35 degrees F 0 0 Soil with historical petroleum hydrocarbon impacts was encountered beneath the water sump while deconstructing the UPRC Federal 5-3K, 5-4K, 5-5K, 5-6K tank battery. There was no indication that the dumplines or water tank were leaking. The volume of the release is unknown. The petroleum hydrocarbon impacted soil is being excavated. Groundwater was encountered in the excavation at approximately 5 feet bgs. Laboratory analytical results received on April 17, 2015 confirmed benzene impacts to groundwater above the CGWQS at a concentration of 5.2 µg/L. The groundwater analytical results are summarized in Table 1. Additional soil and groundwater samples will be collected from the excavation. The analytical results and excavation details will be provided in a supplemental report. A topographic Site Location Map showing the general location of the release is attached as Figure 1. 336632 400826939 false 2015-04-17T00:00:00-06:00 40.254158 -104.801788 FEE 1 0 0 false <_x0032_7_approved>false S false Tank Battery 0 Unknown Unknown 0 0 false false false true false 0 2015-04-17T10:22:18.437-06:00 Historical Release - Volume of the release is unknown. 400830873 400830873 FORM 19 SUBMITTED 400830873.pdf 400830873 400830878 OTHER 24 Hour Email Notification.pdf 115046 400830873 400830879 TOPOGRAPHIC MAP 014215102_FIG01_SL.pdf 538920 400830873 400830880 ANALYTICAL RESULTS Table 1 - GW.pdf 42001 400830873 1 SPILL 2015-04-17T00:00:00-06:00 County/Municipality Tom Parko

Email 400830873 2 SPILL 2015-04-17T00:00:00-06:00 County/Municipality Roy Rudisill

Email 400830873 1 2015-04-27T00:00:00-06:00 0 0 true true false false false false false Excavation activities are ongoing at the site. Confirmation soil samples will be collected from the excavation sidewalls and will be submitted for laboratory analysis of TPH, BTEX, pH, EC, and SAR (if applicable). An additional excavation groundwater sample will be collected following removal of impacted groundwater. The analytical results and excavation details will be provided in a supplemental report. Gravel, Sand, and Clay. 5 9 230 200 4700 3000 2380 0 0 0 0 0 0 false false 0 0 false true true false false false false false false false false true 400830873 1 2015-04-27T00:00:00-06:00 false false true false Soil with historical petroleum hydrocarbon impacts was encountered beneath the water sump while deconstructing the UPRC-63N66W /5SENW tank battery. There was no indication that the dumplines or water tank were leaking. The volume of the release is unknown. The Kerr-McGee facility will be deconstructed. false false false Thread was being aborted.