<_x0034_00833359>

400833359 19 2015-05-03T15:58:54.797-06:00 66561 B OXY USA INC

760 HORIZON DR #101

GRAND JUNCTION CO 81506 Blair Rollins 970 263-3637 970 263-3694 Blair Rollins HES Specialist 2015-05-03T15:58:54.797-06:00 2015-05-03T15:58:54.767-06:00 441603 in process brollins 2015-04-30T06:42:47.937-06:00 brollins blair_rollins@oxy.com 0.00000 blair_rollins@oxy.com brollins brollins 2015-05-03T15:58:52.28-06:00 400830028 400833359 LUJAN, CARLOS 2015-04-23T00:00:00-06:00 GAS GATHERING SYSTEM MESA NWNE 14 9s 94w 6 Y CROP LAND Sunny 0 0 At approximately 12:30PM on Thursday (April 23, 2015) an Oxy employee discovered a leak below the lined secondary containment at the Brush Creek Compressor Station. Based on the spill footprint and recovered liquid, it appears that the release is greater than 100 barrel outside of secondary containment. Approximately 4 barrels of free liquids were being removed from the spill area and reintroduced into Oxy's liquid handling system. No holes were identified in the tanks during removal and inspection. The result of the spill is under investigation and will be reported to the COGCC as soon as it is available. 412237 400830028 false 2015-04-23T00:00:00-06:00 39.280848 -107.846308 FEE Brush Creek Ranch 0 0 0 false <_x0032_7_approved>false S false 0 >=5 and <100 >=5 and <100 0 0 true false false true false 0 2015-04-23T15:28:08.157-06:00 400833359 400833359 FORM 19 SUBMITTED 400833359.pdf 400833359 400833375 AERIAL PHOTOGRAPH BCCS spill 4.23.15_aerial.pdf 1570902 400833359 400833377 TOPOGRAPHIC MAP BCCS spill 4.23.15_topo.pdf 554273 400833359 1 SPILL 2015-04-29T00:00:00-06:00 COGCC Carlos Lujan

Notification email sent

400833359 2 SPILL 2015-04-11T00:00:00-06:00 Mesa County Andrew Martsoff

Notification email sent

400833359 3 SPILL 2015-04-24T00:00:00-06:00 Surface Owner Gary Hanson

Voicemail left

400833359 1 2015-04-29T00:00:00-06:00 0 0 true false false false false false 6 false Extent of contamination was determined visually and using a photo-ionizing detector. Confirmation samples are currently being collected to confirm extent of contamination within the area of the spill to ensure all contamination has been removed. Once these sample results have been received, Oxy will provide them to the COGCC under separate cover and will also request for closure or detail additional efforts required to remediate the spill. Fughes clay loam, 2 - 6 % slopes (map unit symbol 37). Soil below tank secondary containment appears to be very tight clay soils which contained the spilled material and reduced ability for migration. Soil found below the clay appears to be native topsoil from the original construction of the facility location. 100 1 2020 800 800 2254 0 0 0 0 132 15 0 0 0 0 false false 0 0 false false false false false false false false false true false true 45 30 400833359 1 2015-04-30T00:00:00-06:00 false false false true Holes in secondary containment liner An Oxy employee visually inspected the tanks during removal and identified no holes or compromises to the external integrity of the tanks. During removal of the secondary containment liner, small holes were identified as the point of release. Oxy is currently in the process of upgrading the tanks and secondary containment system at this facility. 325 true false false Thread was being aborted.