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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.sptesting.wastewaterC@comcast.net - schirmerswastewater.com <br />June 12, 2025 <br />Oliver White <br />605 Stubbs Bay Rd. <br />Orono, MN <br />A Compliance inspection was completed for the existing on -site sewage treatment <br />system located on this property for the sale of the home. The system consists of 2- <br />1000 gallon septic tanks, 1 -1000 gallon pump tank, a pressurized mound system <br />with a 10' x 43' rock bed, built in 1994 for a 3 bedroom home. <br />Soil boring #1 found mottled soil (redox features) at 1.7' into the original soil & the <br />original soil at elev. 101.1 & the bottom of the rock bed at elev. 102.4 leaving 1.3' of <br />sand below the rock bed & a 3' separation from the bottom of the rock & redox <br />features. Soil boring #2 found mottled soil at 1.1' into the original soil & the original <br />soil at elev. 100.2 & the bottom of the rock bed at elev. 102.1 leaving 1.9' of sand & a <br />3' separation. This system meets the required 3' separation from the bottom of the <br />rock bed & is classified as in compliance with Minnesota Chapter 7080 rules. <br />On 6-9-25 1 probed the sand at the downslope toe of the mound & rock, both were <br />dry, no sign of hydraulic overloading. <br />The tanks were pumped by Kothrade Sewer, Water & Excavating, Inc. & were found <br />to be compliant. All of the trees need to be removed in the area of the septic tanks <br />Some are on top of the tanks. Just cut the trees off flush with the ground <br />Nothing other than gray water (laundry, showers etc.) human waste & toilet tissue <br />should be disposed of into the septic tanks. Garbage disposals are not <br />recommended due to adding more solids & fine solids passing through into the <br />system. Iron filters are also not recommended & should be diverted out of the <br />system. Excessive amounts of soaps, antibacterial soaps, cleaning agents, shower <br />cleaners used every shower & chlorine agents may kill the bacteria you need living <br />in the system. Additives are not recommended. Recommend to pump & clean you <br />tanks through the manhole by a certified pumper every 3 years. Check with your <br />pumper to set up a schedule. This certificate of compliance is no guarantee that this <br />system will continue to function indefinitely. <br />Steven B. Schirmers <br />