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400755611 19 2014-12-18T12:24:14.767-07:00 96850 WPX ENERGY ROCKY MOUNTAIN LLC

1001 17TH STREET - SUITE #1200

DENVER CO 80202 Karolina Blaney 970 6832295 970 5890743 Karolina Blaney Environmental Specialist 2014-12-18T12:24:14.767-07:00 2014-12-18T12:24:14.75-07:00 440307 in process blaneyk 2014-12-18T12:08:19.627-07:00 blaneyk karolina.blaney@wpxenergy.com 0.00000 karolina.blaney@wpxenergy.com blaneyk blaneyk 2014-12-18T12:24:13.017-07:00 400747929 400755611 Spencer, Stan 2014-12-05T00:00:00-07:00 TANK BATTERY GARFIELD SWSW 34 6S 96W 6 Y NON-CROP LAND sunny, cool 0 0 The cause of this incident is human error. WPX consultant was blowing down a flow line prior to workover operations at the GM 41-4 well pad. The consultant did not realize that the flow line was directly connected to a tank located at the Riley Tank Farm; the Riley Tank Farm is located 1700’ northeast of the well pad. The pressure pushed produced water and condensate through a valve located on the top of the tank. Approximately 40 bbls of fluids were lost. Majority of the spilled fluids were contained inside lined SPCC containment ring. Approximately 1 bbl of fluid sprayed outside the containment and impacted soil on location. 40 bbls of fluid was recovered. 435158 400747929 true 2014-12-05T00:00:00-07:00 39.475440 -108.103333 FEE 0 0 0 false <_x0032_7_approved>false S false 0 >=1 and <5 >=5 and <100 0 0 true false false true false 0 2014-12-08T16:18:36.22-07:00 400755611 400755611 FORM 19 SUBMITTED 400755611.pdf 400755611 400755623 AERIAL PHOTOGRAPH Riley Tank Farm Release Form 19 Map 12-9-14.pdf 1208440 400755611 1 SPILL 2014-12-08T00:00:00-07:00 COGCC Stan Spencer

Initial Form 19

970 625-2497 400755611 2 SPILL 2014-12-08T00:00:00-07:00 County Kirby Wynn

Email

970 625-5905 400755611 3 SPILL 2014-12-08T00:00:00-07:00 Fire Department David Blair

Email

970 285-9119 400755611 1 2014-12-18T00:00:00-07:00 0 0 true false false false false false false By field measurements and mapping with a Trimble GPS unit. Nihill channery loam - channery to very channery stratified channery sandy loam 50 10 1975 80 1560 A WPX consultant was in the process of blowing down a flow line prior to workover operations on the GM 701-4HN1 well located on the GM 41-4 well pad (COGCC fac. # 334636). The spill occurred when the consultant opened the unload valve at the production units which normally feeds to the production tanks on-site. However, the GM 41-4 location has a line that runs to the Riley Tank Farm. The Riley Tank Farm is located approximately 1,700 feet to the northeast of the well pad. The pressure in the line displaced the fluids, present in the line, into one of the tanks at the tank farm facility causing it to overfill. The fluids migrated out of the top of the tank and into the steel lined SPCC containment structure. Due to the pressure in the tank a small amount of fluid misted out of the top and impacted a small area outside the lined SPCC containment structure. When the spill was discovered, the unload valve was closed and the valve to the Riley Tank Farm was repositioned to direct flow to the on-site production tanks. A vast majority of the spill was contained within the lined SPCC containment structure and was recovered with a vac truck. The small area of impact outside the containment infiltrated into the soils in the immediate vicinity of the containment structure. No fluids migrated off site. The lined SPCC containment performed as it was designed and allowed for 100 percent fluid recovery. The small area of impact outside the containment structure was sampled and is being analyzed for the full Table 910-1 analytical suite. Further remedial actions, if warranted, will be based on these results. 0 0 0 0 41 40 0 0 0 0 0 false false 0 0 false false false false false false false false true true false false 87 50 1 400755611 1 2014-12-18T00:00:00-07:00 true false false false A WPX consultant was in the process of blowing down a flow line prior to workover operations on the GM 701-4HN1 well located on the GM 41-4 well pad (COGCC fac. # 334636). The spill occurred when the consultant opened the unload valve at the production units which normally feeds to the production tanks on-site. However, the GM 41-4 location has a line that runs to the Riley Tank Farm. The Riley Tank Farm is located approximately 1,700 feet to the northeast of the well pad. The pressure in the line displaced the fluids, present in the line, into one of the tanks at the tank farm facility causing it to overfill. The fluids migrated out of the top of the tank and into the steel lined SPCC containment structure. Due to the pressure in the tank a small amount of fluid misted out of the top and impacted a small area outside the lined SPCC containment structure. The production group will lock out/tag out Niobrara unload valves, in a closed position. This will be implemented on all Niobrara wells that send water to an off-site facility. In addition, signage will be installed by the valve noting “UNLOAD VALVE ONLY - DO NOT OPEN – CONTACT PRODUCTION PERSONEL” and another sign on the water line noting “ WATER TO OFF SITE FACILITY”. false false false Thread was being aborted.