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7080.1910 INDIVIDUAL SUBSURFACE SEWAGE TREATMENT SYSTEMS 30 <br />7080.1880 SEWAGE FLOW DETERMINATION FOR OTHER ESTABLISHMENTS. <br />Design sewage flow and waste concentration levels for other establishments with a flow of 5,000 <br />gallons per day or less shall be determined by part 7081.0130. <br />Statutory Authority: MS s 115.03; 115.55 <br />History: 32 SR 1347 <br />Published Electronically: October 10, 2013 <br />7080.1885 OTHER FLOW CONSIDERATIONS. <br />If the system is served by a sewage collection system, part 7081.0140 applies. <br />Statutory Authority: MS s 115.03; 115.55 <br />History: 32 SR 1347 <br />Published Electronically: October 10, 2013 <br />7080.1900 SEWAGE TANKS; GENERAL. <br />Sewage tanks serving ISTS must meet or exceed the applicable requirements of parts 7080.1910 to <br />7080.2030 unless otherwise approved by a licensed professional engineer and approved by the local unit of <br />government. <br />Statutory Authority: MS s 115.03; 115.55 <br />History: 32 SR 1347 <br />Published Electronically: October 10, 2013 <br />7080.1910 TANK STRENGTH. <br />Subpart 1. Requirements. Tanks, fittings, risers, and apertures must: <br />A. be capable of supporting long-term vertical loads for the conditions in which the tank will <br />be placed. These loads include, but are not limited to, saturated soil load, based on 130 pounds per cubic <br />foot; <br />B. be capable of withstanding a lateral load for the conditions the tank will be placed; <br />C. with proper maintenance and venting, not be subject to failure due to corrosion and <br />degradation from sewage or sewage gases, including risers and maintenance hole covers; and <br />D. be structurally capable of withstanding exposure and stresses from freezing conditions. <br />Subp. 2. Poured -in -place concrete tanks. Poured -in -place concrete tanks must be designed to meet <br />each requirement of subpart 1 and be designed by a Minnesota licensed professional engineer. <br />Statutory Authority: MS s 115.03; 115.55 <br />History: 32 SR 1347 <br />Published Electronically: October 10, 2013 <br />Copyright ©2014 by the Rev <br />so <br />of Statutes, State of Minnesota. All Rights Reserved. <br />