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401102615 19 2016-09-02T11:03:06.47-06:00 47120 KERR MCGEE OIL & GAS ONSHORE LP

P O BOX 173779

DENVER CO 80217-3779 Paul Schwarz 970 336-3500 Paul Schwarz HSE Representative 2016-09-02T11:03:06.47-06:00 2016-09-02T11:03:06.453-06:00 in process mfurtaw 2016-09-01T07:46:54.343-06:00 mfurtaw Paul.Schwarz@anadarko.com 0.00000 Paul.Schwarz@anadarko.com mfurtaw mfurtaw 2016-09-02T11:03:04.377-06:00 401102615 401102615 2016-09-01T00:00:00-06:00 OTHER WELD SWSW 32 3N 66W 6 Y OTHER Sunny; 80 degrees F 0 0 While performing an emissions upgrade at the Herman 1, L32-13JI, L32-14 tank battery facility, soil and groundwater with historical petroleum hydrocarbon impacts were encountered adjacent to the dumplines. There were no indications that the dumplines were leaking. The volume of the release is unknown. Groundwater was encountered in the excavation at approximately 6 feet below ground surface. A groundwater sample (GW01) was collected and submitted for laboratory analysis for BTEX. Laboratory analytical results received on September 1, 2016, indicated that benzene and total xylenes exceeded CGWQS at concentrations of 180 µg/L and 4,890 µg/L, respectively. The analytical results and excavation details are summarized in the supplemental report. A topographic Site Location Map showing the geographic setting of the release is provided as Figure 1. 401102615 false 2016-09-01T00:00:00-06:00 40.177310 -104.806134 FEE 1 0 0 false <_x0032_7_approved>false I false Tank Battery Pad Unknown Unknown Unknown 0 0 false true false false true 0 2016-09-01T07:46:54.75-06:00 401102615 401102615 FORM 19 SUBMITTED 401102615.pdf 401102615 401102959 OTHER 24 Hour Email Notification.pdf 141754 401102615 401102993 ANALYTICAL RESULTS Laboratory Analytical Results.pdf 875827 401102615 401103149 SITE MAP 014216157_FIG02_EXC_SITE.PDF 383502 401102615 1 SPILL 2016-09-01T00:00:00-06:00 Weld County Roy Rudisill

Notified via Email

401102615 2 SPILL 2016-09-01T00:00:00-06:00 Weld County Tom Parko

Notified via Email

401102615 3 SPILL 2016-09-01T00:00:00-06:00 Weld County Troy Swain

Notified via Email

401102615 4 SPILL 2016-09-01T00:00:00-06:00 Landowner Landowner

Notified via Phone

401102615 1 2016-09-01T00:00:00-06:00 0 0 true true false false false false 6 false On August 31, 2016, four soil samples (N01@4’, E01@4’, S01@4’, and W01@4’) were collected from the excavation sidewalls and submitted for laboratory analysis of TPH, BTEX, pH, and EC. Laboratory analytical results indicated that TPH, BTEX, pH, and EC concentrations were in compliance with COGCC Table 910-1 allowable levels at the lateral extent of the excavation. Approximately 110 cubic yards of impacted soil were excavated and transported to the Kerr-McGee Land Treatment Facility in Weld County, Colorado. Approximately 55 barrels of impacted groundwater were recovered from the excavation and transported to a licensed injection facility. Prior to backfilling, one hundred pounds of COGAC®, a carbon-based bioremediation product, were applied to the open excavation. The general site layout, excavation dimensions, and excavation soil and groundwater sample locations are depicted on the Excavation Site Map provided as Figure 2. The excavation soil and groundwater sample analytical results are summarized in Table 1 and Table 2, respectively. The laboratory analytical report is attached. Well-graded sands (SW). 6 10 925 170 1120 1040 1200 Groundwater monitoring wells will be installed at the site to determine the extent and magnitude of the groundwater impacts and establish points of compliance. 0 0 0 0 false false 0 0 true true true false false false false false false false false true 28 20 6 401102615 1 2016-09-01T00:00:00-06:00 false false true false While performing an emissions upgrade at the Herman 1, L32-13JI, L32-14 tank battery facility, soil and groundwater with historical petroleum hydrocarbon impacts were encountered adjacent to the dumplines. There were no indications that the dumplines were leaking. The dumplines adjacent to the historical petroleum hydrocarbon impacts will be replaced and the site will be restored to pre-release grade. 110 false false true Kerr-McGee Land Treatment Facility 55 0 Thread was being aborted.