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COGIS - SPILL OR RELEASE INFORMATION

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Antelope 42-31 - #491683 InformationStatus: CL - 9/22/2025
Spill Type: ReleaseFacility Name/No.:Antelope 42-31 /
Facility Type:SPILL OR RELEASEFacility Status:CL
Date of Discovery:5/24/2023Date Closed:9/22/2025
Operator:BONANZA CREEK ENERGY OPERATING COMPANY LLC Operator Number:8960
County:WELD  - #123Location:SENE 31 5N62W
Doc Number:404363020Lat/Long:40.357852 / -104.360006  Source: ACTUAL based On LatLong
Municipality
(if within municipal boundaries):
--
Waters of the State: Impacted Media:
Related Remediation Project Number
if work proceeding under an approved Form 27:
27247
 
Spill Description:
During an internal review/audit of data alteration, Bonanza Creek found data anomalies and identified that a spill should have been reported for the Antelope 42-31 on 05/24/2025. Bonanza is submitting this form to establish the record of the spill, is submitting accurate lab data with the Form 27, requests reopening REM Project ID 27247, and requests closure of this spill/release under the active remediation project.
 
Resolution:
Resolving Document:  404363020Closure Requested:  09/22/2025
Resolution:  Work Procedeing under Form 27
 
Resolution Project:
Date Approved:  10/13/2022Facility Name:  Antelope
Date Recv'd:  10/13/2022Facility ID:  421167
Rem DocNum:  403098899Remediation Project #:  27247
Document Type:  FORM 27 qtrqtr: SENE   section: 31  township: 5N   range: 62W   meridian: 6
 
Operator Information:
Operator:BONANZA CREEK ENERGY OPERATING COMPANY LLC
Oper. No.8960
Address:555 17TH STREET SUITE 3700  DENVER  CO 80202
Type of Facility:SPILL OR RELEASE
Fac. Name:Antelope 42-31 -
County Name:WELD
qtrqtr: SENEsection: 31township: 5Nrange: 62Wmeridian: 6