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401103303 19 2016-09-02T08:56:24.343-06:00 10084 PIONEER NATURAL RESOURCES USA INC

5205 N O'CONNOR BLVD STE 200

IRVING TX 75039 James Roybal 719 846-7898 James Roybal Environmental Supervisor 2016-09-02T08:56:24.343-06:00 2016-09-02T08:56:24.313-06:00 447516 in process jamesroybal 2016-09-02T08:26:48.233-06:00 jamesroybal james.roybal@pxd.com 0.00000 james.roybal@pxd.com jamesroybal jamesroybal 2016-09-02T08:56:21.657-06:00 401100275 401103303 Kosola, Jason 2016-08-26T00:00:00-06:00 PIT 05 071 07478 LAS ANIMAS SESE 13 33S 66W 6 Y NON-CROP LAND Hot Sunny 0 0 We had a spill that was found yesterday 8-26-16 at around 11:45 AM by a vendor on the Filly 44-13 well site(API# 05-071-07478). A lease operator was dispatched to the site and found the lined production pit to be leaking, the level in the pit was over the liner and was seeping through the fill slope. The operator isolated the well from the pit and dispatched water trucks to lower the level in the pit. It is estimated that 65bbls of produced water were spilled. The spill ran to the west and entered a dry drainage that was considered waters of the state with no live water. A call was made to the CDPHE spill hotline. 401100275 true 2016-08-26T00:00:00-06:00 37.165680 -104.724170 FEE 1 0 0 true <_x0032_7_approved>false S false 0 0 >=5 and <100 0 0 true false true false false 0 2016-08-27T09:25:42.767-06:00 401103303 Produced water quality data from the well associated with or representative of the spill is attached. Pioneer and its consulting geochemical specialists have found, after 20 years operating in the Raton Basin CBM field, that soil sampling no longer adds useful data on smaller, short-term spills as land uses and the environment are not sensitive to short-term exposure to CBM produced water. Effects to soil chemistry from short-term CBM produced water spills are temporary and shallow for several reasons: the water does not contain crude oil or liquid hydrocarbons; the TDS is significantly less than 10,000 mg/L; it is suitable for livestock watering, wildlife and in many cases surface discharge. Mixed with other water it is suitable for irrigation without impact. At the agency request Pioneer has requsted that soil samples be collected and will supply the results when they are recieved. Pioneer Natural Resources request closure of this spill based on this statement and attached water quality data. 401103303 401103303 FORM 19 SUBMITTED 401103303.pdf 401103303 401103315 ANALYTICAL RESULTS Filly 44-13 water quality.pdf 53835 401103303 1 SPILL 2016-08-26T00:00:00-06:00 Land Owner Doug Taylor

Voice mail

401103303 2 SPILL 2016-08-27T00:00:00-06:00 COGCC Jason Kosola

email

401103303 3 SPILL 2016-08-27T00:00:00-06:00 LACOG Bob Lucero

email

401103303 4 SPILL 2016-08-27T00:00:00-06:00 CDPHE Spill Hotline

voicmail

401103303 1 2016-09-02T00:00:00-06:00 0 0 true false false false false false 0 false GPS and visual inspection From the NRCS soil survey map: Lorencito-Sarcillo complex 25 0 0 190 2100 This well normally produces to the gathering line and not to the pit. At the time the spill occurred the line was left going to the tank and pit on location and was not monitored causing the spill. Plans to repair the liner are being made and a plan will be implemented to monitor the water level in the tank and pit when in use. 0 0 0 0 65 0 0 0 0 0 false false 0 0 false false false false false false false false true true false true 277 3 0 401103303 1 2016-09-02T00:00:00-06:00 true false false false Root cause was determined as Inadequate communication, did not communicate to route personel that the tank setup on the location existed and how to monitor it. Repaires to the liner will be made and a plan will be implemented to monitor water level in the tank and pit when in use. false false false Thread was being aborted.