Page 1June 6, 1975 Mr. J. L. Pearce Vice President, Marketing & Research Sargent-Sewell Inc 1185 108th Street Grand Prairie, Texas 75058 Dear Mr. Pearce: Your letter of May 17, 1973, asks whether the pipeline marking regulations of this Department require that the direction of fluid flow be shown. The marking requirements for gas transmission lines are stated in §192.707 of Title 49 Code of Federal Regulations, and the requirements for liquid pipelines transporting hazardous materials and petroleum products in §195.410. Neither of these regulations require direction of flow to be shown. For your information, copies of §§192.707 and 195.410 are enclosed. If we can be of further assistance, please call on us. Sincerely, /signed/ Joseph C. Caldwell Director Office of Pipeline Safety 2 Enclosures#

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