# TRANSCANADA NORTHERN BORDER INC — Corrective Action Order

**Citation:** CPF 520111004H  
**Type / status:** enforcement / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2011-07-21

CLOSED corrective action order.

## Document text

Corrective Action Order involving TRANSCANADA NORTHERN BORDER INC. The dataset does not identify a cited regulation for this case. The case was opened on 2011-07-21 and is reported as closed as of 2012-11-08. Open the official case record for notices, responses, orders, and the latest status.

Official case documents:

520111004H_CAO_07212011.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111004H/520111004H_CAO_07212011.pdf

520111004H_CAO_07212011_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111004H/520111004H_CAO_07212011_text.pdf

520111004H_Closure Letter_11082012.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111004H/520111004H_Closure%20Letter_11082012.pdf

520111004H_Closure Letter_11082012_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520111004H/520111004H_Closure%20Letter_11082012_text.pdf

520111004H_Closure Letter_11082012_text.pdf

CERTIFIED MAIL – RETURN RECEIPT REQUESTED
November 8, 2012
Mr. Vern Meier
Vice President, US Pipelines, Field Operations
TransCanada Northern Border, Inc.
717 Texas Avenue
Houston, TX 77002-2761
Re: CPF 5-2011-1004H
Closure Letter
Dear Mr. Meier:
On July, 21 2011, the Associate Administrator for Pipeline Safety, Pipeline and Hazardous Materials
Safety Administration (PHMSA), formerly the Research and Special Programs Administration, issued
a Corrective Action Order (CAO) in the above-referenced case. The CAO required TransCanada
Northern Border, Inc., to take immediate corrective actions with respect to its gas transmission
pipeline known as the Bison Pipeline which experienced a failure on July 20, 2011. After review of
the records and the work performed on these pipeline systems, the Director of the Western Region,
PHMSA, has determined that TransCanada Northern Border, Inc. has satisfactorily complied with the
terms of that CAO. Accordingly, this case is now closed.
Thank you for your assistance in bringing this effort to an acceptable conclusion.
Sincerely,
Chris Hoidal
Director, Western Region
Pipeline and Hazardous Materials Safety Administration
cc: PHP-60 Compliance Registry
PHP-500 Allen/Larson
PHP-300 Barrett

## Provenance

- Official: Yes
- Source: <https://primis.phmsa.dot.gov/enforcement-data/case/520111004H>
- Source ID: `phmsa-enforcement`
- SHA-256: `c7d5f1868714a29ac64494361cbd909d019e510be6a66d65647bf7bfebe00114`
- Retrieved: 2026-08-20T04:44:44.458Z
- Exported: 2026-08-24T00:00:11.927Z
- Document slug: `phmsa-enforcement-520111004h`

### Source metadata

```json
{
  "cpf": "520111004H",
  "operator": "TRANSCANADA NORTHERN BORDER INC",
  "region": "Western",
  "pipelineType": "GAS INTERSTATE ONSHORE",
  "caseStatus": "CLOSED",
  "citedSections": [],
  "dataAsOf": "08/04/2026 12PM",
  "caseDataAsOf": "2026-08-04",
  "attachmentCount": 4,
  "attachments": [
    {
      "name": "520111004H_CAO_07212011.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/520111004H/520111004H_CAO_07212011.pdf",
      "bytes": 525059,
      "category": "case_document"
    },
    {
      "name": "520111004H_CAO_07212011_text.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/520111004H/520111004H_CAO_07212011_text.pdf",
      "bytes": 43200,
      "category": "case_document"
    },
    {
      "name": "520111004H_Closure Letter_11082012.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/520111004H/520111004H_Closure%20Letter_11082012.pdf",
      "bytes": 19916,
      "category": "agency_document"
    },
    {
      "name": "520111004H_Closure Letter_11082012_text.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/520111004H/520111004H_Closure%20Letter_11082012_text.pdf",
      "bytes": 4721,
      "category": "agency_document"
    }
  ],
  "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": "TRANSCANADA NORTHERN BORDER INC"
}
```