<_x0034_00925029>

400925029 19 2015-11-04T15:29:38.657-07:00 66561 B OXY USA INC

760 HORIZON DR #101

GRAND JUNCTION CO 81506 Blair Rollins 970 263-3637 970 640-6919 Blair Rollins HES Specialist 2015-11-04T15:29:38.657-07:00 2015-11-04T15:29:38.64-07:00 442971 in process brollins 2015-10-26T15:55:36.827-06:00 brollins blair_rollins@oxy.com 0.00000 blair_rollins@oxy.com brollins brollins 2015-11-04T15:29:36.983-07:00 400887236 400925029 LUJAN, CARLOS 2015-08-19T00:00:00-06:00 WELL PAD MESA SENE 7 10S 94W 6 Y NON-CROP LAND Sunny 0 1 At approximately 1:00PM on Wednesday (August 19, 2015) an Oxy contract hydrovac operator spilled approximately 10 barrels of produced water and tank bottom sludge outside of secondary containment during hydrovac unloading operations. During unloading activities, the back gate of the hydrovac truck lost hydraulic pressure and unexpectedly opened. The spilled material flushed out of the hydrovac truck, exited the lined secondary containment, and flowed down the fill slope off the pad and into a small stormwater diversion ditch and stormwater sediment pond. Oxy personnel and contractors immediately contained the running water within the ditch downgradient of the impacted area and began removing the liquid. Another onsite contractor immediately diverted the flowing water upgradient of the impacted area to aid in isolating and capturing all impacted soil and surface water. Impacted soil and water was removed and reintroduced into the secondary containment for disposal. 334514 400887236 true 2015-08-19T00:00:00-06:00 39.206106 -107.917612 FEE OXY USA Inc. 1 0 0 true <_x0032_7_approved>false S false 0 0 0 0 0 true false false true false >=5 and <100 2015-08-20T07:55:28.28-06:00 Produced water and tank bottom sludge 400925029 400925029 FORM 19 SUBMITTED 400925029.pdf 400925029 400930041 ANALYTICAL RESULTS My Way Ranch 7-8 spill data tabulation.pdf 67080 400925029 400930987 SITE MAP MWR 7-8 spill sampling map.pdf 322816 400925029 400930997 AERIAL PHOTOGRAPH MWR 7-8 spill aerial_small.pdf 315355 400925029 400930999 TOPOGRAPHIC MAP MWR 7-8 spill topo.pdf 501375 400925029 1 SPILL 2015-08-20T00:00:00-06:00 COGCC Carlos Lujan

No response yet

970 625-2497 400925029 2 SPILL 2015-08-20T00:00:00-06:00 Mesa County Andrew Martsoff

No response yet

970 244-1763 400925029 1 2015-11-03T00:00:00-07:00 0 0 true false true false false false 0 false Extent of contamination was determined visually and screened using a PID. Immediately after the spill occurred, response personnel began excavating and containing the spill which resulted in a shallow (up to 3" deep) extent of contamination from the spill. Surface water was contained downgradient of the impacted area and removed for offsite disposal. Cerro silty clay loam, 2-6% slopes, Map Unit Symbol 18. 40 1 2647 30 3020 100 2231 All excavated material was contained inside lined secondary containment and hauled to RNI disposal facility for offsite disposal. Confirmation samples were collected from the excavated area by ECOS Environmental and Disaster Restoration. Sampling locations and analytical results for the confirmation samples can be found in the attached sample location map and tabulated laboratory data spreadsheet. All confirmation samples were found to be below COGCC Table 910-1 standards. The excavated area was be backfilled with native material, seeded, and incorporated into Oxy's stormwater management plan until successful revegetation of the sideslope is achieved. 0 0 0 0 0 0 0 0 0 0 false false 10 10 false false false false false false false false false false false true 30 20 Produced water and tank bottom sludge 0 400925029 1 2015-08-28T00:00:00-06:00 true false false false The point of failure was the airplane wing located on the left side of hte rear hatch door. The airplane wings (door lock system) would not move, allowing the door hinge system to malfunction and lose hydraulic control of the rear door. The door unexpectedly opened completely and released the contents of the hydrovac truck all at once. The equipment was taken out of service to ensure all mechanical issues were fixed with the door hinge system. During unloading activities, all malfunctioning airplane wings will be monitored to ensure proper unloading activities are completed. 2 true false false 0 5 Thread was being aborted.