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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 4#394 - Phone 763-497-3566 - Fax 763-497-5011 <br />www.s testin .wastewater comcast.net- schirmerswastewater.com <br />May 23, 2023 <br />Eric Nelson <br />3535 Christine Dr. <br />Orono, Henn. Co., MN <br />A Compliance inspection was completed for the existing on-site sewage treatment <br />system located on this property. The system consists of 2-1300 gallon septic tanks, <br />1 -1300 gallon pump tank & a pressurized mound system with a 10' x 65' rock bed <br />for a 5 bedroom home. <br />Soil boring #1 found mottled soil (redox features) at 1.8' into the original soil, & the <br />original soil at elev. 98.7 & the bottom of the rockbed at elev. 100.8 leaving 2.1' of <br />sand below the rock bed & a 3.9' separation from the bottom of the rock bed & redox <br />features. Soil boring #2 found mottled soil at 2' into the original soil & the original <br />soil at elev. 99.4 & the bottom of the rock bed at elev. 100.7 leaving 1.3' of sand & a <br />3.3' 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. <br />The tanks were pumped by Kothrade Sewer, Water & Excavating, Inc. & were found <br />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. This certificate of compliance is no guarantee that this <br />system will continue to function indefinitely. <br />Steven B. Schirmers <br />