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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 />June 26, 2023 <br />Mans Killingstad <br />930 Cox Farm 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 2-1000 gallon septic tanks, <br />1 -1000 gallon pump tank & a pressurized mound system with a 10'x 55' rock bed <br />built in 1993' for a 3 bedroom home. <br />Soil boring #1 found mottled soil (redox features) at 1.5' into the original soil, & the <br />original soil at elev. 97.2 & the bottom of the rockbed at elev. 98.3 leaving 1.1' of <br />sand below the rock bed & a 2.6' separation from the bottom of the rock bed & redox <br />features. Soil boring #2 found mottled soil at 2.1' into the original soil & the original <br />soil at elev. 97.7 & the bottom of the rock bed at elev. 98.5 leaving .8' of sand & a <br />2.9' separation from the bottom of the rock bed & redox features. This system meets <br />the required separation from the bottom of the rockbed & redox features & is <br />classified as in compliance with Minnesota Chapter 7080 rules using the 15% <br />reduction allowed (2.6'). <br />The tanks were pumped by Kothrade Sewer, Water & Excavating, Inc. & were found <br />to be compliant. Manhole risers were added to the 1st 2 septic tanks. <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 />