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400802626 19 2015-03-04T14:01:01.423-07:00 66571 OXY USA WTP LP

P O BOX 27757 #110

HOUSTON TX 77227-7757 Blair Rollins 970 263-3637 970 640-6919 Blair Rollins HES Specialist 2015-03-04T14:01:01.423-07:00 2015-03-04T14:01:01.407-07:00 436983 in process brollins 2015-03-03T14:45:34.203-07:00 brollins blair_rollins@oxy.com 0.00000 blair_rollins@oxy.com brollins brollins 2015-03-04T14:00:59.327-07:00 400597258 400802626 Spencer, Stan 2014-04-26T00:00:00-06:00 WELL PAD GARFIELD swsw 17 6s 97w 6 N 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 N true 2014-04-26T00:00:00-06:00 39.518308 -108.248709 OTHER (SPECIFY) Oxy-Private 0 0 0 true <_x0032_7_approved>false S false Rangeland 0 0 >=1 and <5 0 0 false true false true false 0 2014-04-28T11:19:25.627-06:00 400802626 Oxy is requesting closure of this spill based on the analytical results of the spoils pile from the spill. To address SAR, Oxy will spread the spoils out onto the working surface of the pad and cap the spoils with at least three feet of native material at the end of the life of the pad. 400802626 400802626 FORM 19 SUBMITTED 400802626.pdf 400802626 400803491 ANALYTICAL RESULTS L696375.pdf 36340 400802626 1 SPILL 2014-04-26T00:00:00-06:00 COGCC Carlos Lujan

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400802626 2 SPILL 2014-04-26T00:00:00-06:00 Garfield County Kirby Wynn

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400802626 1 2015-03-03T00:00:00-07:00 0 0 true false false false false false 0 false Oxy determined extent of contamination by visual identification of the spill and the utilization of a photo-ionization detector to field screen the impacted material and excavation area. Utso-Rock outcrop complex, 40-90 percent slopes (map unit symbol 71). During excavation, native shaley soil was encountered throughout the excavation profile. 80 2 600 680 680 Laboratory analytical results identify all analytes to be below COGCC Table 910-1 standards for the spoils pile, except for sodium adsorption ratio (SAR). To address the elevated SAR value, Oxy will spread out the spoils onto the active working surface of the pad and at the end of the life of the pad Oxy will cap the pad with at least three feet of native material. Oxy is therefore requesting closure of this spill. 0 0 0 0 3 0 0 0 0 0 3120 false false 0 0 false false false false false false false false false true true false 25 25 1 400802626 1 2015-03-03T00:00:00-07:00 false true false false 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 choke cap and needle valve was replaced to ensure no additional produced water was spilled. 3 false true false 0 0 Thread was being aborted.