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An Expansion of Soil Engineering Services, Inc. <br />ENGINEERING TESTING <br />. PAUL 6800 S. County Rd. 18. P.O. Boi 35108. Mpit.. Mo. 55435 / 612-941 -5600 <br />ESOTA 3219 E. 19th Avenue. Ribbing. Mn. 55746 / 218-263-8869 <br />J s BRAUN R. t. Efestdenr <br />R.M ANOIRSON. Vtce Pm Op9f§tiom <br />C G URUSt R. Vtc9 Pt9t Bngitw9nn§ <br />February 24, 1977 <br />-iiL <br />Brauer ^ Associates, Inc. <br />6440 Flying Cloud Drive <br />Eden Prairie, Minnesota 55343 <br />Re: 77>045 SOIL BORINGS § PERCOLATION <br />TESTS <br />Lots 4^5 <br />Robert Cargill, Richard Dohert <br />Property <br />North Arm Road <br />Orono, Minnesota <br />! J <br />Gentlemen: <br />As you requested on February 9, 1977, we have recently taken <br />two power auger borings and 12 percolation tests to assist <br />in evaluating the soil, soil absorptivitv, and the ground- <br />water conditions for the design of individual sanitary <br />systems for the proposed houses to be situated on the above <br />referenced lots. The percolation tests and borings were <br />taken in the general locations as directed by you and p <br />shown on the attached sketch. Surface elevations at the <br />bore holes were referenced to the center line of North Arm <br />Road south of the southeast property corner of Lot 5 with <br />an assumed elevation of 100.0. <br />INVESTIGATION METHODS:'I <br />The boring and percolation tests were taken on February 17, <br />1977 using a truck-mounted power auger unit. The soil <br />classifications and depth as shown on the attached logs were <br />inferred from the soils brought to the surface by the con­ <br />tinuous flight feature of the auger. The depth of strata <br />change is thus considered approximate. The soils encoun­ <br />tered in the borings were visually and manually classified <br />in accordance with ASTM D2487 ’’Unified Soils Classification <br />System and ASTM D2488 ’’Recommended Practice for Visual and <br />Manual Description of Soils". A copy o. ASTM D2487 is <br />attached. Representative samples were then returned to our <br />laboratory for verification of the field classifications by <br />a Soils Engineer. Representative samples will remain in <br />this office for a period of 60 days to be available for your <br />examination. <br />V • <br />n clu/iiiucc QQ / QOII ^ AND MATERIALS <br />iP’