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ITCO ALLIED ENGINEERING CO. <br /> AN ALLIANCE OF INSTANT TESTING COMPANY AND ALLIED TEST DRILLING <br /> Jobsite and Laboratory Testing, Geotechnical Services, Commercial, Residential and Municipal <br /> 7125 West 126th Street, Suite #500 - Savage, MN 55378 <br /> Telephone: (952)890-7366 Fax: (952)890-5883 <br /> May 30, 2013 <br /> Attention: Sven Phone: 612-267-2670 <br /> Stonewood Development sven@stonewood.com <br /> 7407 Wayzata Boulevard <br /> Minneapolis, Minnesota 55426 <br /> RE: 2789 Pheasant Road <br /> Orono, Hennepin County, Minnesota <br /> As requested, a site visit was made on May 30, 2013 at 9:42 A.M, to evaluate and test soils for the <br /> construction of a boathouse at a lakeside residential lot. <br /> At the time of the inspection, an excavation had been completed adjacent to the lake shoreline. <br /> Configured as upper and lower footing lines with bulkheads, placed at an elevation to provide <br /> acceptable frost protection. Soils within the excavation consisted of a sandy clay, with saturated <br /> surface soils and standing water. The contractor was making preparations to draw down the water <br /> with a pumping operation during the inspection. <br /> To assess the strength of the soils, a 5/8�h inch diameter smooth probe was used to penetrate the <br /> base of the proposed footing lines. With full body weight applied, the probes indicated penetration <br /> consistent with cohesive soils of acceptable consolidation. <br /> Additional testing was conducted with a dynamic cone penetrometer to assess the relative load <br /> bearing capacity of the subgrade soil. The dynamic cone penetrometer (DCP), employs a eight <br /> kilogram (17.6 pound) hammer to drive a 20 millimeter diameter conical point into the soil, with the <br /> penetration recorded in millimeters per blow. From the DCP readings, a per blow, penetration <br /> average was recorded and a N-value derived. This N-value is an empirical relationship we have <br /> established to equate the dynamic cone data to the more familiar blows per foot (BPF) standard <br /> penetration soil boring test. <br /> Test#1 — Upper Footing Line (Near Mid-point) <br /> DCP Depth Per Blow AvQ. / N-Value Estimated Load <br /> 425 MM (16.7") 29.5 MM / N -10.75 3688 PSF <br />