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An Expansion of Soil Engineering Services, Inc. Rmun- <br />TESIING <br />O MINNEAPOLISrST. PAUL 6880 S. County Rd. 18, P.O. Box 35108, Mpls., Mn. W35 / 612-941.5600 J. S. ERAUNP E. Prnrdeir <br />O NORTHERN MINNESOTA 3219 E. 19th Avenue, Hibbing, MN. 55746 / 218.263-8869 P.H. ANDERSON. Vim Pin. Oprariont <br />❑ CENTRAL MINNESOTA 200 Omo Avenue No., St. Cloud, Mn. 56301 ! 612.253.9940 C G. KRUSE P. E.. V—P— Enprn ,,;g <br />February 6, 1978 <br />Robert F1. Mason, Inc. <br />14201 Excelsior Boulevard <br />Minnetonka, Minnesota 55343 <br />Re: 77-626 PERCOLATION TESTING <br />Burnhart's Single Family <br />Dwelling <br />Lot 3, Block 1 of Lot 49 <br />Auditor's Subdivision #203 <br />(Riedel Co. Stubb's Bay Add'n.) <br />Orono, Minnesota <br />Mr. Mason: <br />In accordance with your request, we have conducted a total <br />of 30 percolation tests and one power auger boring. The <br />borings and tests were conducted to assist in determining <br />soil absorptivity rates for an individual sanitary system <br />proposed for the above referenced lot. After the initial <br />six tests were taken, the additional tests were taken to <br />find an area on the lot where a drainfield could be placed. <br />It was our opinion that many, if not all, of the locations <br />tested would be suitable if tested during warm weather. <br />The depth of frost this winter is exceptional and appeared <br />to be influencing test results. However, your scheduling <br />did not permit a delay until that time. <br />The boring and percolation tests were conducted at the <br />locations shown on the attached sketch. Pertinent locations <br />and elevations were determined by our field crew, and are <br />based upon the dimensions and elevations of your January 19, <br />1978 Boundary Survey prepared by Schoell & Madson, Inc. <br />Surface elevations were referenced to top of asphalt on cul- <br />de-sac of Eileen Street at the point where it is indicated <br />on the Boundry Survey to be at elevation 106.5. <br />The percolation tests and borings were drilled with a truck - <br />mounted power auger unit. All operations were conducted in <br />conformance with the City of Orono specifications. <br />CONSULTING ENGINEERS/SOILS AND MATERIALS <br />Test Borings a foundation Engineering and Recommendations* Inspection of Cj�suurpon a Material Testing of Sods. Concrete and Budding Components <br />