It is the responsibility of the licensed SSTS designer to submit a design of sufficient detail to allow adequate review for compliance by the Department. At a minimum the following is required.
(A) A detailed design using worksheets approved by the Department.
(B) The soil observation data must be dated within 12 months of the date of the SSTS construction permit application and verify that there are two soil treatment and dispersal areas, that can support systems as described in Minn. Rules Chapters 7080.2210 through 7080.2230, or site conditions described in Minn. Rules Chapter 7081.0270, subparts 3 through 7, available on the lot. Lots existing prior to January 23, 1996 must provide for one complete SSTS.
(C) The site plan must be drawn to scale, include a north arrow, horizontal, and vertical reference points for the proposed SSTS. The site plan must also include:
(1) The location of all soil observations and other testing, all wells and their depth(s) within 100 feet of the proposed SSTS, and water lines within 50 feet;
(2) Any evidence of cut, filled, disturbed, compacted, or other unsuitable soil on the lot. SSTS proposed in these areas may require a method to determine the timed rate of water flowing through the soil. Acceptable methods include, but are not limited to: percolation tests, permeameter tests, and infiltrometer tests;
(3) The distance from proposed SSTS to all other required setbacks including: existing or proposed structures, or improvements, easements, ordinary high water level, property line(s), and road right-of-way(s);
(4) Slope with percent and direction; and
(5) Elevations of the soil observations, periodically saturated soils, and the proposed bottom of the soil treatment and dispersal system in reference to a bench mark. Flood elevation and/or OHW, are to be included if applicable.
(D) The center of each trench, corners of the bed, and any toe slopes must be staked. The entire area is to be protected from disturbance, compaction, or other damage by installing snow or silt fence when there is any other construction proposed on the property. SSTS soils altered by construction traffic or other means will require a revised design be submitted to the Department along with any required fees.
(E) If a proposed SSTS design cannot meet a technical requirement of this chapter, Minn. Rules Chapter 7080 or Chapter 7081, it is the responsibility of the licensed SSTS designer to contact the Department before the design is completed.
(F) Reuse of any tank(s) for a replacement SSTS must include the MPCA tank integrity and safety compliance form and be included with the SSTS design and SSTS construction permit application.
(G) Submit any additional requirements as may be required by the Department or the MPCA.
(Ord. 67-2010, passed 5-17-11) Penalty, see § 52.999