soils inspection/compaction control

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.. ,�' Patrick J Hines, PE � 15481 Dresden Trafl Apple Valiey MN 55124 (612) 423.4247 7 October 1997 ��C,�1�� r1r Marty Ziermann OCj U � �99� Marty' s Excavating F phONO 7185 Rutz Lake Road C\-��( O Mayer MN 55360 Re: Soils Inspection and Compaction Control Proposed Single Family Residence Lot 4 Block 4 Sugar Woods Hennepiii Co (Orono), Minresota Please be advised that I did, between 30 September 1997 and 5 Uctober 1997, inspect excavations and perform field and laboratory tests upen compacted fiil at the above referenced locations. The purpose was to assure conform— 2nce with minimum Building Code provisons. Please accept this letter ar.d attachments as my report of work accomplished. I was summoned to the site when it became obvious that, due to the eleva— tion difference between garage footings and existing terrain, cornbined with the discovered depth af required excavations, contrailed fill would be nec— essary below at least below garage footings and, to a lesser extend, below � residence area footings. .�.. There were no soil bcrings on the site prior to this work. Rather. , minimum � Building Code requirements were elected by you to be followed (footings or � controlled fill to rest upon naturally occurring mineral soi1, firm enough to support the werk, compaction to be at least 950 of Standard Maximum Den— � • sity). � The inspection of the garage area and a portion af the residence area was � performed by myself on 30 September 1997. I verified that all uncontrolled .' fi11, buried 'numus and topsoil was removed from ar. ev�rsized building pad � area. Base soil is a lean clay, gray, mottled, hard in lower elevations, with a medium condition prevalent in upper 2evels. I probed the bottom of � the excavation at several points to assure that no "false hottoms" were Qi present. Water was not present in the excavation. � Refer to the enclosed sketch for a recording of base of excavation eleva— ti.ons and oversizing pravided as a function of garage location. Horizontal and vertical control was provided mostly hy you. I assigned, f�r keeping track of density test levels, lOU.UC as the bottom of proposed garage foct— ,R �ngs. Based upon these recordirigs, oversizing is adequate for ali footings. In the residence area, since natural mineral soil quickly rises to th= south, there will be very little fi.li over mcst of this area. Hence, I oniy casually �nspected this area, and did not measure c�versizing, except for applicable zones near the garage.