# NORTHERN NATURAL GAS CO — Notice of Amendment

**Citation:** CPF 420081009M  
**Type / status:** enforcement / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2008-05-29

CLOSED notice of amendment citing 192.231, 192.605(b)(9), 192.605(d), 192.612(a), 192.612(b), 192.615(a)(8), 192.615(c)(1), 192.703(c), 192.715(b)(2), 192.715(b)(3), 192.719.

## Document text

Notice of Amendment involving NORTHERN NATURAL GAS CO. PHMSA's enforcement data identifies the cited regulations as 192.231,  192.605(b)(9),  192.605(d),  192.612(a),  192.612(b),  192.615(a)(8),  192.615(c)(1),  192.703(c),  192.715(b)(2),  192.715(b)(3),  192.719. The case was opened on 2008-05-29 and is reported as closed as of 2008-05-29. Open the official case record for notices, responses, orders, and the latest status.

Official case documents:

420081009M_noa_05292008.pdf: https://primis.phmsa.dot.gov/enforcement-documents/420081009M/420081009M_noa_05292008.pdf

420081009m_noa_05292008_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/420081009M/420081009m_noa_05292008_text.pdf

## Provenance

- Official: Yes
- Source: <https://primis.phmsa.dot.gov/enforcement-data/case/420081009M>
- Source ID: `phmsa-enforcement`
- SHA-256: `4b62b25d3124c1905f6790079bd42e03a0672618cc0359c9ee046e6b356da255`
- Retrieved: 2026-08-20T04:44:44.458Z
- Exported: 2026-08-22T02:14:58.620Z
- Document slug: `phmsa-enforcement-420081009m`

### Source metadata

```json
{
  "cpf": "420081009M",
  "operator": "NORTHERN NATURAL GAS CO",
  "region": "Southwest",
  "pipelineType": "GAS INTERSTATE ONSHORE",
  "caseStatus": "CLOSED",
  "citedSections": [
    "192.231",
    "192.605(b)(9)",
    "192.605(d)",
    "192.612(a)",
    "192.612(b)",
    "192.615(a)(8)",
    "192.615(c)(1)",
    "192.703(c)",
    "192.715(b)(2)",
    "192.715(b)(3)",
    "192.719"
  ],
  "dataAsOf": "08/04/2026 12PM",
  "caseDataAsOf": "2026-08-04",
  "attachmentCount": 2,
  "attachments": [
    {
      "name": "420081009M_noa_05292008.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/420081009M/420081009M_noa_05292008.pdf",
      "bytes": 466413,
      "category": "case_document"
    },
    {
      "name": "420081009m_noa_05292008_text.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/420081009M/420081009m_noa_05292008_text.pdf",
      "bytes": 2059567,
      "category": "case_document"
    }
  ],
  "extractedAgencyDocumentCount": 0,
  "attachmentPolicy": "Official attachment links are retained. Agency-issued documents may also include a verified local PDF and page-level text representation.",
  "jurisdiction": "US",
  "operatorName": "NORTHERN NATURAL GAS CO"
}
```