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. , ITCO ALLIED ENGINEERING CO. AN ALLIANCE OF INSTANT TESTING COMPANY AND ALLIED TEST DRILLING Jobsite and Laboratory Testing, Geotechnical Services, Commercial, Residential and Municipal 7125 West 126th Street, Suite#500 - Savage, MN 55378 Telephone: (952)890-7366 Fax: (952)890-5883 November 21, 2014 Atlashomes Phone: 763-425-3333 14450- 117th Avenue North Fax: 763-390-0039 Dayton, Minnesota 55369 mark@atlashomesmn.com RE: 1575 Maple Place Orono, Hennepin County, Minnesota As requested, site visits were conducted on November 19�h and 20`h, at 11:58 AM and 10:20 AM to evaluate and test soils for the construction of a single-family residence. A certificate of survey for the property, dated 12-26-13, was available for review. At the time of the initial inspection, TMS Construction, was excavating toward the rear of the residence. The material being removed consisted of uncontrolled, undocumented fill with debris. The excavator was instructed to keep digging until hitting native soils, which was found to be saturated, grey, poorly graded, silty sand. The elevation was measured to be 925.7 feet using a nearby marked elevation stake located by others. The excavator was instructed to keep removing the uncontrolled fill and debris until the same or similar soils were discovered. Proper oversizing of fill below footings should be achieved on a 1:1 horizontal to vertical ratio from the bottom of the footing. It should be noted that water was percolating into the excavation from the sidewalls but appears it will not rise above bottom of footing level. Pumps may be required to control water during excavation and backfill procedures. From previous inspections in the area, the anticipated groundwater in spring conditions may rise above bottom of footing level. In order to prevent the sump pump from running as much we recommend cutting a ditch towards the rear pond at footing elevation and backfilting with 18" of sand. Native on-site cohesive soils can be placed on top of the sand. This should minimize the amount of time the sump may run by allowing water to daylight itself towards the pond in the rear. The following day, November 20th, a site visit was conducted to check on the status of the excavation. Upon arrival, the southwestern quarter of the house had been excavated to native soils. Clean washed sand was being imported for fill material. Approval was given to place the sand on the southwest corner of the residence. A ramp was also constructed using the sand to aid in allowing access to perform the rest of the soil corrections. No compaction efforts were made in the southwest quarter of the residence during importing. This was just used as an area to store the fill sand until more of the residence is sub-cut and filling operations can begin.