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400597258 19 2014-04-29T11:22:31.517-06:00 66571 A OXY USA WTP LP

760 HORIZON DR #101

GRAND JUNCTION CO 81506 Justin Booth 970 2633648 970 2633694 Justin Booth HES Ops Advisor 2014-04-29T11:22:31.517-06:00 2014-04-29T11:22:31.5-06:00 in process boothj 2014-04-28T11:19:25.483-06:00 boothj justin_booth@oxy.com 0.00000 justin_booth@oxy.com boothj boothj 2014-04-29T11:22:30.093-06:00 400597258 400597258 WELL PAD GARFIELD swsw 17 6s 97w 6 Y OTHER Cloudy 0 0 At approximately 12:00pm Saturday, April 26th, 2014, an Oxy employee discovered a release adjacent to the production units on the 697-17-50 Waterfall pad. A production unit had a needle valve on a choke cap suffer sand erosion to the point of failure. The compromised cap/valve allowed produced water to release from the piping. The flow was shut off to the unit to ensure there was not any further fluid loss before the cap could be replaced. The impact of the released liquid was limited to the working surface of the location and no waterway of the US were impacted. 335903 400597258 true 2014-04-26T00:00:00-06:00 39.518308 -108.248709 OTHER (SPECIFY) Oxy-Private 0 0 0 false <_x0032_7_approved>false I false Rangeland 0 0 >=1 and <5 0 0 false true false true false 0 2014-04-28T11:19:25.627-06:00 400597258 400597258 FORM 19 SUBMITTED 400597258.pdf 400597258 400597297 AERIAL PHOTOGRAPH 697-17-50 spill aerial_small.pdf 345948 400597258 400597300 TOPOGRAPHIC MAP 697-17-50 spill topo_small.pdf 703989 400597258 1 SPILL 2014-04-26T00:00:00-06:00 COGCC Carlos Lujan

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400597258 2 SPILL 2014-04-26T00:00:00-06:00 Garfield County Kirby Wynn

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400597258 1 2014-04-28T00:00:00-06:00 0 0 true false false false false false false Calculations were made using LxWxH of the saturated soils on location. Happle Very Channery Sandy Loam 1000 0 177 A contract crew was dispatched to excavate and segregate the impacted soils on the day of discovery. 0 0 0 0 3 3 0 0 0 0 3340 false false 0 0 false false false false false false true false true true true false 40 20 1 400597258 1 2014-04-28T00:00:00-06:00 false true false false The release was caused when a needle valve, mounted to the a choke cap on a production unit was eroded by sand to the point of failure. Once a seal was lost, produced water was able to spill from the production unit until discovered by the Oxy employee. The compromised choke cap and valve was replaced. 4 true false false 0 0 Thread was being aborted.