VECTOR PIPELINE, L.P. — Warning Letter

320111004W_Warning Letter_04072011_text.pdf, page 1Official PDFWARNING LETTER CERTIFIED MAIL - RETURN RECEIPT REQUESTED April 7, 2011 Mr. Mark Maki, Senior V.P. Vector Pipeline L. P. 1100 Louisiana, Suite 3300 Houston, Texas 77002 CPF 3-2011-1004W Dear Mr. Maki: From November 15 to18, 2010, a representative of the Pipeline and Hazardous Materials Safety Administration (PHMSA) pursuant to Chapter 601 of 49 United States Code inspected your Vector Illinois/Indiana pipeline system near Chicago, Illinois. As a result of the inspection, it appears that you have committed probable violations of the Pipeline Safety Regulations, Title 49, Code of Federal Regulations. The items inspected and the probable violation(s) are: 1. §192.735 Compressor stations: Storage of combustible materials. (a) Flammable or combustible materials in quantities beyond those required for everyday use, or other than those normally used in compressor buildings, must be stored a safe distance from the compressor building.#

320111004W_Warning Letter_04072011_text.pdf, page 2During the field inspection of the Joliet Compressor Station, we observed a 4’ x 8’ sheet of foam insulation in the building. This is a combustible material not required for everyday use. 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 items identified in this letter. Failure to do so will result in Vector 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 3-2011-1004W. 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, David Barrett Director, Central Region Pipeline and Hazardous Materials Safety Administration 2#