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May 09 13 11 : 06a p. 4 <br /> • V <br /> � <br /> ITCO ALLIED ENGINEERING CO. <br /> AN ALLIANCE OF INSTANT TESTING COMPANY AND ALLIED TEST DFcILLING <br /> Jobsite and Laboratory Testing, Geotechnical Services, Commercral, Residentia!and Municipa! <br /> 7125 West 126th Street, Suite#500 - Savage, MN 55378 <br /> 7elephone: (952) 890-7366 Fax: (952) 890-5883 <br /> May 8, 2013 <br /> Ron Olson Construction Cefl: 612-369-4240 <br /> 6970 Inwood Road <br /> Cologne, Minnesota 55322 <br /> RE: 3350 Fox Street <br /> Orono, Hennepin County, Minnesota <br /> As requested, site visits were made on May 6 and 7, 2013, at 3:3a P.M, & 12:00 P.M. respectively, <br /> to evafuate and test soils for swimming pool construction at a single-family residence. The <br /> proposed pool will be an in ground design, with a 6"—8" aggregate base, and masonry <br /> construction. <br /> At the time of the inspection, the contractor had completed the poof excavation, being rpctangular in <br /> shape, with shallow east &west ends s[oping to the deep section at the pool centerline. The soils <br /> consisted of slightly plastic loamy sand, below optimum moisture. To assess the strength of the <br /> soils, a 5I8�" inch diameter smooth probe was used to penetrate the base of the excavation at <br /> random. With full body weight applied, the probes indicated generally acceptable penetration within <br /> the opposing sloped sections, with an increase in moisture and penetration observed in the fiat <br /> shallow east and west ends. The east end of the excavation approached optimum moisture in some <br /> sections, with probe penetration exceeding 2 feet. <br /> The load bearing capacity of the soils were evaluated by a dynamic cone penetrometer tests <br /> conducted at the base of the pool excavation. The dynamic cone penetrometer (DCP), employs a <br /> eight kilogram (17.fi pound) hammer to drive a 20 miflimeter diameter canical point into the soil, with <br /> the penetration recorded in millimeters per blow. From the DCP readings, a per blow, penetration <br /> average was recorded and a N-value deri�ed. This N-value is an empirical refatianship 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 — Pool East End (Ffat Zone) <br /> DCP Depth Per Blow Avq. 1 N-Value Estimated Load <br /> 106d MM (41.7") 50.0 MM ! N—6 2000 PSF <br />