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excepted where impractical ar where a damage preverrtion program is in effect. Minnesota's Gopher One Call system provides such a program. Line markers, Figure 3, for buried hazardous materials pipelines must be located at each pub�ic road crossing; at each railroad crossing; and in s�cient number along the remainder of each buried line so that its locaiion is accurately known. ln heavily developed urban areas, line markers are not required where the placement of markers is impractical and the locat govemrnent maintains current records. Notification must be made by teiephone at the earliest possible time following an accident or safety related incident. This is followed by reports to the Natio��al Transportation Safety Board which will conduct an investigation if warranted. The DOT Pipeline Safety Regulations state that a complete emergency plan wiil be in place and operational with the cooperation of fire, poEice and any other pertinent public officials. TF�e Minnesota Offce of Pipeline Safety has the right of inspection and e�forcement for the intrastate operators. MNOPS has been ce�tified as an interstate agent for the Federal Office of Pipeline Safety (FOPS} to conduct interstate inspections and refer the res�lts to the Regional 4ffice of FOPS in Kansas City, MO for enforcement of non- compliance findings. Tank lnspection, Repair, Aiteraiion and Reconstruction. API Standard 653. This American Petroleum Institute Standard is an industry standard and as such does nat carry any governmental oversight. The first edition was issued in January 1991 with a supplement added in January, 1992. APi Standard 653 contains eleven sections, ten ot which cover technical subjects such as: Suitability for Service, Brittle Fracture Considerations, Inspection, Tank Repair and Alteration, Welciing, Examination, Testing and Marking as well as Record Keeping. Of interest to the Task Force is Sec#ion 4, lnspection. This Section has ten parts including: lnspection Frequency Considerations, External lnspection, lnternaE inspection, Checiclists, Records, Reports and Inspector Qualifications. Part 4_2 lnspection Frequency Considerations list eleven factors to be considered when determining inspection intervals for sto�age tanks. The list includes but is not limited to: The nature of the product stored. The results of visuaf maintenance checks. 5-2