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COGIS - SPILL OR RELEASE INFORMATION

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Walsh GU 6-24, U 24-15JI Facility - #493402 InformationStatus: CL - 3/6/2026
Spill Type: ReleaseFacility Name/No.:Walsh GU 6-24, U 24-15JI Facility /
Facility Type:SPILL OR RELEASEFacility Status:CL
Date of Discovery:3/3/2026Date Closed:3/6/2026
Operator:KERR MCGEE OIL & GAS ONSHORE LP Operator Number:47120
Municipality/County:FREDERICK / WELD  - #123Location:SWSE 24 2N68W
Doc Number:404565682Lat/Long:40.119071 / -104.948758  Source: ACTUAL based On LatLong
Municipality
(if within municipal boundaries):
Frederick
Waters of the State: Impacted Media:
Related Remediation Project Number
if work proceeding under an approved Form 27:
39057
 
Spill Description:
While conducting facility decommissioning activities at the Walsh GU 6-24, U 24-15JI Facility, historically impacted soil was discovered at the aboveground storage tank (AST). The volume of the release is unknown. Assessment activities are ongoing. The historically impacted soil will be removed and disposed of and confirmation soil samples will be collected in compliance with ECMC Table 915-1. The assessment details will be summarized in a supplemental Form 27 report (Remediation No. 39057; Form 27 Initial Document No. 403938363). The topographic Site Location Map showing the geographic setting of the release is provided as Figure 1.
 
Resolution:
Resolving Document:  404565682Closure Requested:  03/06/2026
Resolution:  Work Procedeing under Form 27
 
Resolution Project:
Date Approved:  12/26/2024Facility Name:  Walsh GU 6-24 , U 24-15JI Facility
Date Recv'd:  12/26/2024Facility ID:  488769
Rem DocNum:  403938363Remediation Project #:  39057
Document Type:  FORM 27 qtrqtr: SWSE   section: 24  township: 2N   range: 68W   meridian: 6
 
Operator Information:
Operator:KERR MCGEE OIL & GAS ONSHORE LP
Oper. No.47120
Address:P O BOX 173779  DENVER  CO 80217-3779
Type of Facility:SPILL OR RELEASE
Fac. Name:Walsh GU 6-24, U 24-15JI Facility -
County Name:WELD
qtrqtr: SWSEsection: 24township: 2Nrange: 68Wmeridian: 6