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400984407 19 2016-02-05T07:44:16.953-07:00 10084 PIONEER NATURAL RESOURCES USA INC

5205 N O'CONNOR BLVD STE 200

IRVING TX 75039 James Roybal 719 846-7898 James Roybal Enviromental Supervisor 2016-02-05T07:44:16.953-07:00 2016-02-05T07:44:16.937-07:00 444655 in process jamesroybal 2016-02-05T07:13:14.843-07:00 jamesroybal james.roybal@pxd.com 0.00000 james.roybal@pxd.com jamesroybal jamesroybal 2016-02-05T07:44:14.907-07:00 400981130 400984407 Kosola, Jason 2016-01-30T00:00:00-07:00 WATER GATHERING SYSTEM/LINE LAS ANIMAS NWSE 12 32S 66W 6 Y NON-CROP LAND Warm, Sunny 0 0 The lease Operator found a valve on the gathering line at the well head split open spraying water on the location. For reference the spill occured on the Frodo 33-12 well site. It is estimated that 10bbls of produced water were spilled and it did leave location running offsite to the west about 400'. No State Waters were involed. It appears that freeze may have caused the valve to split. The leak was isolated upon Lease operator arrival. 427440 400981130 true 2016-01-30T00:00:00-07:00 37.269890 -104.730160 FEE 0 0 0 true <_x0032_7_approved>false S false 0 0 >=5 and <100 0 0 true false false true false 0 2016-01-30T10:20:01.703-07:00 400984407 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. When requested by the agency or landowner Pioneer has and will collect soil samples. Pioneer Natural Resources request closure of this spill based on this statement and attached water quality data. 400984407 400984407 FORM 19 SUBMITTED 400984407.pdf 400984407 400984421 ANALYTICAL RESULTS Polly 065A Water Quality - 2015-12-22.pdf 53794 400984407 1 SPILL 2016-01-29T00:00:00-07:00 COGCC Jason Kosola

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400984407 2 SPILL 2016-01-29T00:00:00-07:00 LACOG Bob Lecero

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400984407 3 SPILL 2016-01-30T00:00:00-07:00 Land owner Fred Avi

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400984407 1 2016-02-05T00:00:00-07:00 0 0 true false false false false false 0 false GPS and visual inspection From the NRCS soil survey map: Gulnare-Allens Park Complex 120 0 3990 4070 When the freeze occured the well was not running, it was down awaiting a work over. The Broken valve was replaced temporarily with the same type of valve and will be replaced with a freeze resistant Balon valve when we recieve them from being ordered. Also an isolation valve is going to be installed on the gathering line to isolate gathering form the wellhead. The water from this well normally goes to CDPHE permitted outfall 065A. The analytical data for this outfall will be attached. 0 0 0 0 10 0 0 0 0 0 false false 0 0 false false false false false false false true true true false true 450 2 0 400984407 1 2016-02-05T00:00:00-07:00 true false false false Inadequate design or installation was deterimed as cause. There was no isolation valve on gathering line to isolate gathering from the well when not running. There will be a freeze resistant Balon Valve installed when we recieve them and an isolation valve will be installed on the gathering line. false false false Thread was being aborted.