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COGIS - SPILL OR RELEASE INFORMATION

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Nishimoto 23-36 Wellhead - #492257 InformationStatus: CL - 11/13/2025
Spill Type: ReleaseFacility Name/No.:Nishimoto 23-36 Wellhead /
Facility Type:SPILL OR RELEASEFacility Status:CL
Date of Discovery:11/11/2025Date Closed:11/13/2025
Operator:KERR MCGEE OIL & GAS ONSHORE LP Operator Number:47120
County:WELD  - #123Location:NWSE 36 3N67W
Doc Number:404432607Lat/Long:40.179869 / -104.836539  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:
37215
 
Spill Description:
While conducting wellhead plugging and abandonment activities at the Nishimoto 23-36 wellhead, historically impacted soil was discovered at the wellhead. 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. 37215; Form 27 Initial Document No. 403903096). The topographic Site Location Map showing the geographic setting of the release is provided as Figure 1.
 
Resolution:
Resolving Document:  404432607Closure Requested:  11/13/2025
Resolution:  Work Procedeing under Form 27
 
Resolution Project:
Date Approved:  9/10/2024Well Name/No.:  NISHIMOTO
Date Recv'd:  9/10/2024API number:  05-123-24759
Rem DocNum:  403903096Remediation Project #:  37215
Document Type:  FORM 27 qtrqtr: NWSE   section: 36  township: 3n   range: 67w   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:Nishimoto 23-36 Wellhead -
County Name:WELD
qtrqtr: NWSEsection: 36township: 3Nrange: 67Wmeridian: 6