Agenda - Council - 05/13/2014 - Laserfiche WebLink

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7080.2050 INDIVIDUAL SUBSURFACE SEWAGE TREATMENT SYSTEMS 38 Statutory Authority: MS s 115.03; 115.55 History: 32 SR 1347 Published Electronically: October 10, 2013 7080.2030 EFFECTIVE DATE. Sewage tanks must meet the requirements of parts 7080.1910 to 7080.2020 by April 4, 2012. Tanks produced and installed before April 4, 2012, must meet either the requirements of Minnesota Rules 2005, part 7080.0130, or the requirements of Minnesota Rules 2009, parts 7080.1910 to 7080.2020. Statutory Authority: MS s 115.03; 115.55 History: 32 SR 1347; 35 SR 1353 Published Electronically: October 10, 2013 7080.2050 DISTRIBUTION OF EFFLUENT. Subpart 1. General. Distribution of effluent for ISTS must meet or exceed the requirements of this part. Subp. 2. Supply pipes. A. The supply pipe extending from the septic tank to the undisturbed soil beyond the tank excavation must meet the strength requirements of American Society for Testing and Materials (ASTM), Schedule 40 Pipe, contained in Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120, ASTM D1785 (2006). The schedule is incorporated by reference, is available through the Minitex interlibrary loan system, and is not subject to frequent change. B. Supply pipes must: (1) be made from materials resistant to breakdown from sewage and soil; (2) be watertight, including all joints; (3) be durable throughout the design life; (4) not deflect, buckle, crush, or longitudinally bend; (5) be resistant to pressures, fatigue, and strain for the application; (6) be installed according to American Society of Testing and Materials, Standard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity -Flow Applications, ASTM D2321 (2005). The standard is incorporated by reference, is available through the Minitex interlibrary loan system, and is not subject to frequent change; (7) be designed, installed, and protected to minimize the danger of freezing in the pipe; (8) not be closer than six inches from final grade. Pipes susceptible to freezing shall be insulated; and (9) be set back from water supply wells and water service pipes according to chapters 4715 and 4725. C. The minimum slope for gravity supply pipes is one percent (1/8 inch per linear foot). There is no maximum slope. Pipe restraints must be used for slopes greater than 20 percent or where fluid velocities Copyright ©2014 by the Rev so of Statutes, State of Minnesota. All Rights Reserved.