At approximately 1500 hours on Saturday April 20, 2013, Chaparral Energy employees discovered that oil from a storage tank battery had escaped the secondary containment around the battery and released into a nearby creek. The cause of the release appears to be due to the fact a generator failed causing the salt water tanks to overfill which then pushed the salt water to into the oil tanks causing them to overfill and release out the top of the oil tanks. Oil then seeped under the north wall of the containment wall and flowed downhill approximately 200 feet into the nearby creek. Chaparral estimates about 300 bbls of oil released from the tank battery.
OSC McAteer and START were mobilized to the site on Sunday April 21. Chaparral Energy has response personnel onsite attempting to collect oil from the creek. Additional contractor support has been ordered up by Chaparral later today at the OSC's request.