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ddSSTRUCTION SPECIFICATIONS <br />1. <br />2. <br />3. <br />4. <br />5. <br />6. <br />7. <br />8. <br />9. <br />10. <br />II. <br />12. <br />13. <br />14. <br />All construction• unless otherwise noted, is to be performed in strict <br />sccordsnce irith the provisions of MN Rules, Part 7080, Individual Sewage <br />Treatment Systems Standards. Any deviation from this design shall be <br />approved in %rriting by the owner or his representative. <br />The drainfisld treatment area will be staked out by the owner or his <br />representative before construction. Construction vehicle traffic within <br />this area shall be limited to backhoe and/or small tracked vehicles before, <br />during, and after construction. <br />\ <br />Trench construction shall not occur if soil moisture has reached or <br />surpassed plastic limit. <br />Trench bottoms and rock shall be installed level and parallel to surface <br />contours as nearly as possible. <br />Only clean, insoluble rock 3/4" to 2 1/2" mean diameter shalli be Installed <br />in trenches. t <br />Sewer pipe shall be 4" diameter, schedule 40 PVC or of greater strength. <br />Distribution pipe shall be 4** diameter PVC with a minimum 1,000 lbs. <br />crushing strength and one row of 1/2" diameter holes spaced no greater than <br />36" apart and installed at the 6 o'clock position. Pipes shall be <br />installed level with a slope variance of no more than 2" in 50* down and <br />away from drop boxes. <br />Drop box inlets and outlets shall be as noted in the drawings. <br />Drop boxes shall be installed on firm, natural soil as will sewer pipe <br />connecting drop boxes. <br />Trench rock shall be covered with 4" of straw and untreated building paper <br />or a thin, permeable, synthetic fabric from trench wall to trench wall <br />leaving no rock uncovered. <br />Capped inspection pipes shall be Installed at the end of each trench as <br />noted in the drawings. Pipes shall extend 4" above final grade. <br />The septic tank shall be a vertical sidewall, watertight, <br />corrosion-resist^t, one-piece, precast concrete tank with gasketed lid. <br />The lid shall ha^ a miniinim 20" diameter manhole burled between 6" and 12" <br />deep and 4" dapped inspection pipes extending 4^' above grade, centered over <br />the inlet and outlet baffles as noted in the drawings. J <br />Septic tank baffles shall be made of acid resistant plastic or fiberglass <br />and attached with at least four corrosion-resistant connections per baffle. <br />4" *tary tees may be used in place of baffles. <br />Final grauing upslope of the drainfield area shall provide for diversion of <br />runoff away from the drainfield, as shall grading around the septic tank. <br />15. Turf establishment shall be the responsibility of the owner. <br />-4-