<_x0034_00936318>

400936318 19 2015-11-13T08:46:08.907-07:00 8960 BONANZA CREEK ENERGY OPERATING COMPANY LLC

410 17TH STREET SUITE #1400

DENVER CO 80202 brian dodek 720 225-6653 brian dodek Sr Env Specialist 2015-11-13T08:46:08.907-07:00 2015-11-13T08:46:08.89-07:00 443665 in process bdodek 2015-11-13T08:20:56.047-07:00 bdodek bdodek@bonanzacrk.com 0.00000 bdodek@bonanzacrk.com bdodek bdodek 2015-11-13T08:46:07.093-07:00 400914169 400936318 NEIDEL, KRIS 2015-10-07T00:00:00-06:00 TANK BATTERY JACKSON NESW 2 9N 79W 6 N NON-CROP LAND 41 degrees, clear 0 0 A lightning strike caused an electrical failure at the Pierre B tank battery. The failure shutdown the water injection pumps in the injection building. As the injection pumps were not active, the water tank was overfilled with fresh well water and spilled into secondary containment. The release is estimated at 700 bbl inside containment. The release is mainly freshwater. However, the tank does have residual produced water from operational maintenance of the facility. Emergency personnel responded to the release and shut-in the water well to stop the source. Vacuum trucks drained the water pooled in containment and hauled the water to the BCEOC land treatment facility. Electrical repairs have been made and the battery was returned to production. Environmental personnel will oversee the assessment and clean-up. Once the containment is fully drained, soil samples will be collected to ensure the soil is compliant with COGCC Table 910-1 standards. 400914169 true 2015-10-07T00:00:00-06:00 40.779882 -106.233506 FEDERAL 0 0 0 true <_x0032_7_approved>false S false 0 0 0 0 0 true false false false true >=100 2015-10-08T14:15:56.36-06:00 The release was mostly fresh well-water that overflowed a tank with produced water inside. 400936318 400936318 FORM 19 SUBMITTED 400936318.pdf 400936318 400936355 ANALYTICAL RESULTS Soil Analytical Results Attachment.pdf 2115580 400936318 1 SPILL 2015-10-08T00:00:00-06:00 COGCC Kris Neidel

Notified of release via eForm 19

on file 400936318 2 SPILL 2015-10-08T00:00:00-06:00 Jackson County Kent Crowder

Notified of release

on file 400936318 3 SPILL 2015-10-08T00:00:00-06:00 BLM Field office

Notifed of release

on file 400936318 1 2015-11-13T00:00:00-07:00 0 0 true false false false false false false See previous Form 19 See previous Form 19 15 0 1100 Spill response personnel cleaned up the minimal oil stained soil along the spill path. Environmental personnel collected soil samples (SS01 through SS11) throughout the entire release area. Background samples were collected and held by the laboratory in case we needed to analye them. However, all eleven soil samples confirmed that the soil within the spill path was compliant with COGCC Table 910-1. As the stianed soil has been removed and confirmation samples indicate that all soil is compliant with COGCC Table 910-1 standards, Bonanza Creek respectfully requests a No Further Action determination. 0 0 0 0 0 0 0 0 0 0 false false 700 315 false false false false false false true true true true false true 745 1 The release consisted of fresh well water with an initial skim of oil. 400936318 1 2015-11-13T00:00:00-07:00 false true false false The root cause of the incident was a combination of two factors. There was a lightning strike which shut down the injection pumps at the facility. When injection ceased the water tank began to fill up. When the water tank reached the top a high alarm on the tank did not function. The release was found during morning inspections. Bonanza Creek has replaced the high alarm to ensure a callout will occur when the tank is nearly full. Bonanza Creek also installed a buried water vault within the facility that the water tank can drain into if it is overfilled. The previous drain line that ran 800 feet north to an overflow tank has been capped and is no longer active. This will prevent the future conveyance of a release away from the facility. 5 true false false 0 0 Thread was being aborted.