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Page Seven <br />CONSTRUCTION_ OBSERVATIONS AND,_TESTING <br />Soil conditions may well vary between boring locations. Therefore. <br />we recommend a aeotechnica1 engineer be retained to observe the <br />actual site conditions within excavated areas to review the impact <br />of these conditions on the design and construction. We also <br />recommend that soil compaction tests be performed at regular <br />intervals during fill placement within the building area. <br />GXPLORA'1' 1 ON_- I'ROCEDURI S <br />Suit.__S_inlpl.ing - <br />Soil sampling was performed in accordance with ASTM:D1586 -84. Using <br />this procedures. a 2" OD split barrel sampler is drivers into the <br />soil by a 140 lb. weight falling 30 ". After an initial set of 6 ", <br />the number of blows required to drive the sampler an additional 12" <br />is known as the penetration resistance or N-valuc. The N -value <br />an index of the relative density of cohesionless soils and the <br />con,;1stency of cohesive soils. <br />`.oil Classification - <br />\s the samples were obtained in the field. they were visually and <br />manually classified by the field engineer in accordance with <br />'\:STM:P2I87 85 and D2488. Logs of the borings indicating the depth <br />and identification of the various strata, the N-value. water level <br />information and pertinent information regarding the method of <br />maintaining and advancing the drill holes are attached. Charts <br />il1uc;trat1ng the soil classification procedure, the descriptive <br />terminology and symbols used on the boring logs are also attached. <br />STANDARU__OU_CARE <br />The recommendations contained in this report represent our <br />professional opinions. These opinions were arrived at in <br />accordance with currently accepted engineering practices at this <br />time and location. Other than this. no warranty is implied or <br />intended. <br />PRflIESSIONAL ENGjNEERING CONSULTANTS. INC. <br />7' I <br />Leonard A. Rasmussen. P.E. <br />Staff Engineer <br />1 AR /fm <br />I HEREBY CERTIFY THAT THIS P! ! N, ¶r'F.T:v r ' <br />OR REPORT WAS PREPARED BY !' <br />DIRECT SUPERVISION AND THAT I , p_ t::.LY <br />REGISTERED PROFESSIONAL ENGINEER Ufa DEa <br />THE LAWS OF THESTATE OF MINNESOTA. <br />LEONARD A. RASMUSSEN <br />DATE 3 - !! -'i3 REG. NO. 12678 <br />Page 54 <br />