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Jul 17 06 08: 32a p. l <br /> � � = INSTANT TESTING COlVIPANY <br /> 71?5 West 12hth Street • Suice �OU • Savage, ivlN��37g 35th <br /> � �� PHONE: 952-890-i366•FAX: 9�2-fi90-�883 <br /> \� ANN(VERSARY <br /> . 2003 <br /> July 14, 2006 <br /> Mr . Mark Finney <br /> 3210 Korth Shore Drive <br /> Orono , Minnesota 55391 Cell : 612-803-1720 <br /> RE: 3210 North Shore Drive <br /> Orono , Hennepin County, Minnesota <br /> As requested, a site visit was made July 14, 2006 at 9 : 45 A.M. to <br /> evaluate subgrade soils tor construction of a detached garage at <br /> a residential site. <br /> �,t the time of the inspection, the garaqe footings were fully <br /> exeavated to appropriate frost depth, with zooting forms in-place. <br /> Witn the exception of a 12 ' section of che rear footyng line, the <br /> footing base had been correctecl for over excavation, with <br /> approximately 1 ' of a coarse i 1/2" clear aggregate. <br /> To evaluate the subgrade soils , a 1 5/8" fluzed handauger probe was <br /> put down near the mid-point of the front and rear footing lines . <br /> The firs� handauger , cvnducted at the rear footing to a depth of 4 <br /> 3/4 £eet , indicated zones of a moist lean clay, loamy sand & gravel , <br /> a dark organic clay at 1 1/4 feet , with a dark grey/green clayey sand <br /> at depth. The strata of organic clay although primarily cohesive , <br /> contained a thin zone of clay loam with small root fibers and a <br /> isolat�d pocket of peaty clay. This material had minimal organic <br /> odar or fibrous content, with a organic content judged to be 6 <br /> percent or Iess . <br /> The second probe was placed to 3 1/2 feet through the aggrega�e base <br /> at the front footing, and indicated a strata of dark clayey <br /> ' sand underlain by a SP loamy sand . Subgrade soils at each - <br /> probe location were firm, and capable of supporting full body weight <br /> applied to the probe. Ground water was present at approximately 1 <br /> 1/2 foot below the base, of the footing within the building pad. <br /> The relative loadbearing capacity of the subgrade soils , was <br /> determined by a dynamic cone penetrometer test conducted near the <br /> mid-point of the rear footing line. The dynamic cone penetrometer <br /> (DCP) , uses a eight kilogram (17 . 6 pound) hammer to drive a 20 <br /> millimeter diameter conical point into the soil , with he penetration <br /> recorded in millimeters per blow. From the DCP readings , a per blow, <br /> penetration average was recorded and a N-value derived. This N- <br />