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' L ; <br /> S'�'' .I'ESTING, INC. Steven B. Schirmers — MPCA Cert. No. 627 <br /> ' + � 951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566 <br /> May 29 , 1995 <br /> Larry Jacobsen <br /> 635 No. Ferndale <br /> Orono , Henn. Co. , MN <br /> This On-Site Sewage Treatment System is Designed for a Type 1 , four <br /> bedroom home Designed in accordance with the Minnesota Pollution <br /> Control Agency Chapter 7080 and local ordinances . <br /> This site has an existing non-conforming system with the bottom of <br /> the system less than 3 ' ta the seasonally high water table (mottled <br /> soil ) . A Soil Boring into the syste:n indicated the system is <br /> hydraulically overloaded. The existing tank may be used upon <br /> approval by the local Inspector. The tank must be water tight. <br /> The soils on this site are a clay loam & sandy loam. A seasonally <br /> high water table was located at 30" to 38" . A Shallow Trench System <br /> may be installed 12" deep with an Interceptor Drain. <br /> The soils at a depth o£ 12" have a percolation rate averaging <br /> 6 . 4 min/inch . <br /> An Interceptor Drain will need to be installed at a minimum depth <br /> of 4 ' below the bottom of the first trench with a maximum of 4 trenches . <br /> Also a 10 ' horizontal distance between the trench and Interceptor <br /> Drain. The Interceptor Drain must be backfilled with 3/4" diameter <br /> rock or clean sand or gravel . If sand or gravel is used, the tile <br /> must be wrapped with filter cloth. The rock must be backfilled within <br /> 12" of original grade & backfilled with 12" of original soil . <br /> Approval will be needed for 75 ' setback from the wetland or Lydiard Lake . <br /> All neighboring wells are located greater than 100 ' away from the <br /> proposed treatment area . <br /> Keep all heavy equipment off of the proposed treatment area before <br /> and after construction. The treatment area should be marked off <br /> before construction. This Design is not valid & the system will <br /> need to be relocated if failure to protect the areas proposed <br /> for On-Site Sewage Treatment occurs . <br /> CONT' D <br />