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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.wastewater@)comcast.net- schirmerswastewater.com <br />March 16, 2022 <br />Jill Butler <br />3010 Somerset Lane <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 11- <br />1250 gallon septic tank, 1 -1250 gallon pump tank, a pressurized mound system with <br />a 10' x 62' rock bed, built in 2018 for a 5 bedroom home. 2 previous soil verifications <br />have been completed. One by Rusty Olson on 5-26-2016 finding mottled soil at 12" & <br />the City of Orono on 7-24.2018. <br />If there is an iron filter in the house, it should be diverted out of the mound system & <br />into it's own trench. <br />Soil boring #1 found mottled soil (redox features) at 1' into the original soil & the <br />original soil at elev. 100.0 & the bottom of the rock bed at elev. 102.0 leaving 2.0' 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' into the original soil & the original <br />soil at elev. 99.6 & the bottom of the rock bed at elev. 102.0 leaving 2.4' of sand & a <br />3.4' separation. This system meets the required 3' separation from the bottom of the <br />rock bed. <br />The tanks were pumped by Elmer J. Peterson Co. & were found to be compliant. <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. <br />This certificate of compliance is no guarantee that this system will continue to <br />function indefinitely. <br />Steven B. Schirmers <br />