The following spills were reported to the Colorado Oil and Gas Conservation Commission in the past two weeks.

Information is based on Form 19, which operators must fill out detailing the leakage/spill events. Any spill release that may impact waters of the state must be reported as soon as practical. Spills and leaks typically are found during routine maintenance on existing wells, though some actual “spills” do occur among the 18,000-plus wells in the county.

» EXTRACTION OIL & GAS INC reported Nov. 29 a recent tank battery spill near F Street and N. 1st Avenue, northeast of Greeley. An unknown amount of produced water spilled. A corroded nipple on the produced water leg of the separator failed. Spill extents will be pursued with conventional/hyrdovac excavation.

» PDC ENERGY INC reported Nov. 29 a recent tank battery spill near 37th Street and 77th Avenue, west of Evans. Between 5 and 100 barrels of produced water spilled. A pinhole leak was found on the water dumpline.

» KERR MCGEE OIL & GAS ONSHORE LP reported Nov. 23 a historical well spill near Weld County roads 20 1/2 and 7, about 2 miles southeast of Longmont. An unknown amount of oil, condensate and produced water spilled. Historical soil impacts were found following cut and cap operations at the wellhead. Excavation and assessment are ongoing.

» BISON OIL & GAS II LLC reported Nov. 23 a recent spill near Colo. 14 and Weld 390, about 4 miles southeast of Keota. Between 5 and 100 barrels of oil spilled. A lease operator found the release during his regular routine. He walked down the tank lines and isolated the release from a recycle pump line. Vac trucks were dispatched for cleanup.

» HIGHPOINT OPERATING CORPORATION reported Nov. 23 a recent flowline system spill about 2 miles west of Weld 136 and 71, about 6 miles west of Hereford. About 25 barrels of produced water spilled. A compromised produced water dumpline released the liquid to the pad surface. The line was immediately shut in. Impacted soil will be removed and hauled to an approved disposal facility. Laboratory samples will be collected and analyzed.

» KERR MCGEE OIL & GAS ONSHORE LP reported Nov. 22 a historical flowline system spill near Weld 32 1/2 and 23, about a mile south of Milliken. An unknown amount of oil, condensate and produced water spilled. Historical soil impacts were found during flowline removal. Excavation and assessment are ongoing.

» CRESTONE PEAK RESOURCES OPERATING LLC reported Nov. 19 a recent tank battery spill near Weld 30 and 7, in Mead. About 15 barrels of oil and produced water spilled. A fire tube failure on a separator spilled the liquids inside unlined secondary containment. Fluids and visually impacted soil are being removed via hydrovacuum.

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