# COLORADO INTERSTATE GAS CO — Notice of Amendment

**Citation:** CPF 520111008M  
**Type / status:** enforcement / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2011-10-06

CLOSED notice of amendment citing 192.225(b), 192.227(b), 192.605(d), 192.933(a).

## Document text

Notice of Amendment involving COLORADO INTERSTATE GAS CO. PHMSA's enforcement data identifies the cited regulations as 192.225(b),  192.227(b),  192.605(d),  192.933(a). The case was opened on 2011-10-06 and is reported as closed as of 2012-05-18. Open the official case record for notices, responses, orders, and the latest status.

Official case documents:

520111008M_closure letter_05182012.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111008M/520111008M_closure%20letter_05182012.pdf

520111008M_closure letter_05182012_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111008M/520111008M_closure%20letter_05182012_text.pdf

520111008M_NOA_10062011.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111008M/520111008M_NOA_10062011.pdf

520111008M_NOA_10062011_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111008M/520111008M_NOA_10062011_text.pdf

520111008M_Operator Response_12092011.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111008M/520111008M_Operator%20Response_12092011.pdf

520111008M_closure letter_05182012_text.pdf

CERTIFIED MAIL - RETURN RECEIPT REQUESTED
May 18, 2012
Mr. Michael Catt
Vice President of Operations
Colorado Interstate Gas Company
2 North Nevada Avenue
Colorado Springs, CO 80903
RE: CPF 5-2011-1008M
Closure Letter
Dear Mr. Catt:
On October 6, 2011, the Pipeline and Hazardous Materials Safety Administration (PHMSA) issued a
Notice of Amendment (NOA) to Colorado Interstate Gas Company (CIG) in the above-referenced
case. The NOA required revisions to four procedural areas (items) within your Ruby Pipeline’s
Operations and Maintenance (O&M) Manual.
By letter dated December 9, 2011, CIG responded to the NOA by submitting its amended procedures.
Based on our review of the documentation, it had been determined that CIG had adequately addressed
items #1, #3 and #4, but did not address the deficiency cited in item #2. On March 19, 2012, PHMSA
issued CIG a letter of Inadequate Response concerning this matter.
On March 28, 2012, PHMSA received CIG’s Supplemental Response to the NOA that provided
amended welding manual procedures addressing item #2 and finalized Ruby Pipeline’s O&M Manual
procedures. Upon review of the newly-amended procedures, it appears that all inadequacies outlined in
the NOA have been corrected.
Accordingly, this case, CPF 5-2011-1008M, is now closed and no further action is contemplated with
respect to the matters involved in this case. Thank you for your cooperation in this matter.
Sincerely,
Chris Hoidal
Director, Western Region
Pipeline and Hazardous Materials Safety Administration
cc: PHP–60 Compliance Registry
PHP-500 C. Lee (#135653)

## Provenance

- Official: Yes
- Source: <https://primis.phmsa.dot.gov/enforcement-data/case/520111008M>
- Source ID: `phmsa-enforcement`
- SHA-256: `913c343f2ce804d140b4292ccd6a6a502deca4d501fda0b7097ac87c6d2096be`
- Retrieved: 2026-08-20T04:44:44.458Z
- Exported: 2026-08-22T10:12:21.723Z
- Document slug: `phmsa-enforcement-520111008m`

### Source metadata

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{
  "cpf": "520111008M",
  "operator": "COLORADO INTERSTATE GAS CO",
  "region": "Western",
  "pipelineType": "GAS INTERSTATE ONSHORE",
  "caseStatus": "CLOSED",
  "citedSections": [
    "192.225(b)",
    "192.227(b)",
    "192.605(d)",
    "192.933(a)"
  ],
  "dataAsOf": "08/04/2026 12PM",
  "caseDataAsOf": "2026-08-04",
  "attachmentCount": 5,
  "attachments": [
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  "extractedAgencyDocumentCount": 1,
  "attachmentPolicy": "Official attachment links are retained. Agency-issued documents may also include a verified local PDF and page-level text representation.",
  "jurisdiction": "US",
  "operatorName": "COLORADO INTERSTATE GAS CO"
}
```