# TRANSCOLORADO GAS TRANSMISSION COMPANY LLC — Warning Letter **Citation:** CPF 520121002W **Type / status:** enforcement / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective:** Not stated **Published:** 2012-02-21 CLOSED warning letter citing 192.731(a). ## Document text Warning Letter involving TRANSCOLORADO GAS TRANSMISSION COMPANY LLC. PHMSA's enforcement data identifies the cited regulation as 192.731(a). The case was opened on 2012-02-21 and is reported as closed as of 2012-02-21. Open the official case record for notices, responses, orders, and the latest status. Official case documents: 520121002W_Operator Response_03132012.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520121002W/520121002W_Operator%20Response_03132012.pdf 520121002W_warning letter_02212012.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520121002W/520121002W_warning%20letter_02212012.pdf 520121002W_warning letter_02212012_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520121002W/520121002W_warning%20letter_02212012_text.pdf 520121002W_warning letter_02212012_text.pdf WARNING LETTER CERTIFIED MAIL - RETURN RECEIPT REQUESTED February 21, 2012 Mr. Dwayne Burton Vice President TransColorado Pipeline Co. 500 Dallas St., Suite 1000 Houston, TX 77002 CPF 5-2012-1002W Dear Mr. Burton: On October 24 - 27, 2011, a representative of the Pipeline and Hazardous Materials Safety Administration (PHMSA) pursuant to Chapter 601 of 49 United States Code inspected your TransColorado Pipeline, North Unit in Grand Junction, Colorado. As a result of the inspection, it appears that you have committed a probable violation of the Pipeline Safety Regulations, Title 49, Code of Federal Regulations. The item inspected and the probable violation is: 1. §192.731 Compressor stations: Inspection and testing of relief devices. (a) Except for rupture discs, each pressure relieving device in a compressor station must be inspected and tested in accordance with §§192.739 and 192.743, and must be operated periodically to determine that it opens at the correct set pressure. At the time of the inspection, records required by §192.731(a) indicated that the annual inspection and testing was not performed within the required time interval referenced in §192.739(a). The Whitewater Compressor Station, OPP Relief Valve Summary Reports for 2008 and 2009 show that the valves were inspected and tested on February 6, 2008 and May 14, 2009. The fifteen month maximum time interval between test dates was exceeded by eight (8) days when inspected and tested in 2009. TransColorado must conduct relief device inspection and testing at the required time intervals. Under 49 United States Code, § 60122, you are subject to a civil penalty not to exceed $100,000 for each violation for each day the violation persists up to a maximum of $1,000,000 for any related series of violations. We have reviewed the circumstances and supporting documents involved in this case, and have decided not to conduct additional enforcement action or penalty assessment proceedings at this time. We advise you to correct the item identified in this letter. Failure to do so will result in TransColorado Pipeline Company being subject to additional enforcement action. No reply to this letter is required. If you choose to reply, in your correspondence please refer to CPF 5-2012-1002W. Be advised that all material you submit in response to this enforcement action is subject to being made publicly available. If you believe that any portion of your responsive material qualifies for confidential treatment under 5 U.S.C. 552(b), along with the complete original document you must provide a second copy of the document with the portions you believe qualify for confidential treatment redacted and an explanation of why you believe the redacted information qualifies for confidential treatment under 5 U.S.C. 552(b). Sincerely, Christopher Hoidal Director, Western Region Pipeline and Hazardous Materials Safety Administration cc: PHP-60 Compliance Registry PHP-500 J. Coleman (#132916) ## Provenance - Official: Yes - Source: - Source ID: `phmsa-enforcement` - SHA-256: `0d47648d9cf1474c6cb4f0b36b150dd44540ca007675c61e9547b8da2c8d94ff` - Retrieved: 2026-08-20T04:44:44.458Z - Exported: 2026-08-22T11:53:40.751Z - Document slug: `phmsa-enforcement-520121002w` ### Source metadata ```json { "cpf": "520121002W", "operator": "TRANSCOLORADO GAS TRANSMISSION COMPANY LLC", "region": "Western", "pipelineType": "GAS INTERSTATE ONSHORE", "caseStatus": "CLOSED", "citedSections": [ "192.731(a)" ], "dataAsOf": "08/04/2026 12PM", "caseDataAsOf": "2026-08-04", "attachmentCount": 3, "attachments": [ { "name": "520121002W_Operator Response_03132012.pdf", "url": "https://primis.phmsa.dot.gov/enforcement-documents/520121002W/520121002W_Operator%20Response_03132012.pdf", "bytes": 42845, "category": "party_submission" }, { "name": "520121002W_warning letter_02212012.pdf", "url": "https://primis.phmsa.dot.gov/enforcement-documents/520121002W/520121002W_warning%20letter_02212012.pdf", "bytes": 65166, "category": "agency_document" }, { "name": "520121002W_warning letter_02212012_text.pdf", "url": "https://primis.phmsa.dot.gov/enforcement-documents/520121002W/520121002W_warning%20letter_02212012_text.pdf", "bytes": 12944, "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": "TRANSCOLORADO GAS TRANSMISSION COMPANY LLC" } ```