Pipeline Safety Interpretation PI-78-0100

Page 1PI-78-0100 March 3, 1978 Earl H. Ruble, P.E. Earl Ruble and Associates, Inc. 217 Lake Avenue S. Duluth, Minnesota 55802 Dear Mr. Ruble: This is in further response to your letter of January 25 to Mr. Marshall Taylor, Chief, Central Region, Office of Pipeline Safety Operations. From information acquired from your secretary by phone, it appears that your line is an interstate pipeline and subject to the hazardous liquid pipeline safety regulations administered by this office. A copy of these regulations, 49 CFR Part 195, is enclosed for your use in this matter. Sincerely, Cesar DeLeon Acting Director Office of Pipeline Safety Operations#

Page 2February 3, 1978 Mr. Earl Ruble Earl Ruble and Associated, Inc. 217 Lake Avenue S. Duluth, Minnesota 55802 Dear Mr. Ruble: Your letter of January 25, 1978 requesting information pertaining to our requirements for the safety of pipelines carrying methyl alcohol or methanol has been sent to our Washington, D.C. office for their reply. Sincerely, Marshall W. Taylor, II Chief, Central Region Office of Pipeline Safety Operations#

Page 3Earl Ruble and Associated, Inc. 217 Lake Avenue S. Duluth, Minnesota 55802 January 25, 1978 Mr. Marshall W. Taylor Central Regional Office of Pipeline Safety Room 1802 911 Walnut Street Kansas City, Missouri 64106 Dear Mr. Taylor: Charles Hawkins of the Environmental Management Center has suggested we write to you for information concerning an energy project we are developing. We have arranged for a potential of three billion tons of North Dakota lignite coal to be processed in North Dakota for the production of Methyl Fuel (methyl alcohol or methanol). This liquid fuel, which burns more cleanly than natural gas, and can substitute for coal, oil or gas, would be transported by pipeline to the Duluth-Superior port area, with a branch line to Minneapolis for use by Northern States Power Company. Please furnish us an outline of your requirements for the safety of the pipeline we have described above. Very truly yours, EARL RUBLE AND ASSOCIATES, INC. Earl H. Ruble, P. E.#