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400900925 19 2015-10-13T13:48:17.437-06:00 66571 A OXY USA WTP LP

760 HORIZON DR #101

GRAND JUNCTION CO 81506 Blair Rollins 970 263-3637 970 640-6919 Blair Rollins HES Specialist 2015-10-13T13:48:17.437-06:00 2015-10-13T13:48:17.423-06:00 439480 in process brollins 2015-09-16T14:30:48.877-06:00 brollins blair_rollins@oxy.com 0.00000 blair_rollins@oxy.com brollins brollins 2015-10-13T13:48:15.703-06:00 400716744 400900925 Spencer, Stan 2014-10-24T00:00:00-06:00 WATER GATHERING SYSTEM/LINE GARFIELD SESW 29 6S 97W 6 Y OTHER Clear 0 0 At approximately 7:30AM on Friday (October 24th, 2014), an Oxy contractor at the Central Water Handling facility noticed a produced water spill coming from a below ground 4” pipeline that connects the 1500 bbl tanks to a manifold. The pipeline was promptly isolated, preventing further leaking. No free liquids were captured. The leak and subsequent spill was contained within the Centralized Water Handling facility boundary. 417559 400716744 false 2014-10-24T00:00:00-06:00 39.489167 -108.247706 OTHER (SPECIFY) Oxy Private 0 0 0 true <_x0032_7_approved>false S false Rangeland 0 0 >=5 and <100 0 0 true false false true false 0 2014-10-24T11:01:25.61-06:00 400900925 Based on soil sample and groundwater sample results in the area of the spill indicating compliance with COGCC Table 910-1 standards, Oxy is requesting closure of this spill. 400900925 400900925 FORM 19 SUBMITTED 400900925.pdf 400900925 400916729 ANALYTICAL RESULTS CWHF groundwater samples.pdf 72165 400900925 400916733 AERIAL PHOTOGRAPH CWHF transfer line characterization sample map.pdf 2564171 400900925 1 SPILL 2014-10-24T00:00:00-06:00 COGCC Stan Spencer

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970 6252497 400900925 2 SPILL 2014-10-24T00:00:00-06:00 Garfield County Kirby Wynn

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970 6255905 400900925 1 2015-09-16T00:00:00-06:00 0 0 true false false false false false 3 false Oxy exposed the release point on the produced water pipeline and characterized the soil immediately below the point of failure. Oxy also collected surficial soil samples from the spill path to characterize surficial impacts following the spill. All three samples are found to pass COGCC Table 910-1 standards except for SAR and arsenic. Please reference the attached tabulated laboratory data for soil samples collected at the spill point and spill pathway. Also, please refer to the attached spill sampling location map for locations of sampling points. Happle very channery sandy loam, 3 - 12% slopes 50 4 257 388 2080 Oxy collected groundwater samples from three monitoring wells associated with the Centralized E&P Waste Management Facility to deteremine if the produced water spill impacted groundwater in the area. The groundwater monitoring wells at the Central Water Handling Facility were sampled seven times in 2014 following the spill, and six times in 2015. To date, no impacts to groundwater have been identified at the Facility. Please reference the attached tabulated laboratory data for the groundwater monitoring samples collected in 2014 and 2015. 0 0 0 0 60 0 0 0 0 0 false false 0 0 false false false false false false false false true true false true 12 27 400900925 1 2015-09-16T00:00:00-06:00 false true false false The spill point was excavated and it was determined that the point of failure was in due to corrosion to the pipeline. The pipeline was isolated and removed from service. The pipeline was abandoned in place to be removed during final reclamation of the facility. All connections to the pipeline were either capped or blind flanged to ensure the pipeline is not reused. 0 false false false 0 0 Thread was being aborted.