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SP TESTING INC. <br />Steven B. Schirmers - 951 Katydid Lane NE - St. Michael, MN 55376 <br />Cert. No 627 - State License #394 - phone 763-497-3566 - Fax 763-497-5011 <br />www.s testin .wastewater comcast.net- schirmerswastewater.com <br />February 26, 2024 <br />Hennepin County - Jenny Pringle <br />2845 Watertown Rd. <br />Orono, MN <br />A Compliance inspection was completed for the existing on-site sewage treatment <br />system located on this property. The system consists of 1 - 750 gallon trash trap, 1 - <br />1000 gallon dose tank, 1- 750 gallon Multi -Flo Pre -Treatment unit, 1 -1500 gallon <br />pump tank that pumps to the Type 111 pressurized mound system with a 12' x 50' <br />rock bed (only get credit for 10' x 501) built an 6-29-2006, sized for a 4 bedroom home. <br />The mound was placed on fill soil with redox features found in the fill soil, elev. 99.7 <br />& the bottom of the rock at elev. 100.8 leaving a 1.1' separation from the bottom of <br />the rock & redox features. This system is classified as non-compliant due to not <br />meeting a 3' separation required. The blue -gray colors found indicate sewage <br />ponding in the fill. The sand in the mound extends 11' out from the rock bed leaving <br />a 32' wide absorption area (should be 501). <br />The original design completed by SP Testing, Inc. was to remove the fill soil & install <br />a 1500sq.ft, seepage bed for a 5 bedroom home, removing the fill soil & replacing it <br />with clean washed sand. <br />This design was changed by Willy Gibbs, Inspector for the City of Orono at the time. <br />At the time of the installation. Willy did not like the design & changed it. No new <br />design has been found. I was very concerned about the change of the design & it <br />was decided that Willy would do the monitoring of the system. No monitoring <br />information was found at the City of Orono. <br />The tanks were pumped by Elmer J. Peterson Co. & were found to be compliant. <br />