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retest these areas. It is our opinion that she fill materia.le in <br />thin area were adequately compacted and should :perform ae <br />designed. <br />2) 6/24/92a nn this date, we observed soft and Saturated natural <br />soils at the downstream toe of the embankment. we did not observe <br />the removal of these materials or the means in which they <br />stabilized the soft and saturated area; however, when they started <br />plaeinq fill in this area on '/2/92, we did not observe any soft <br />or saturated areas. <br />3) 6(25/92: on this date, we recommended that the natural clays <br />exposed in the base of the keyway trench be scarified and <br />recompacted prior to placing any additional fill. This <br />recommendation was made so that fills would be placed on a uniform <br />and stable surface and so that the desired degree of compaction <br />for the first lift of fill materials could be achieved. We did <br />not test the natural soils prior to fill placement; however, we <br />did test the first lift of :ill placed in this area. The teat <br />results indicate that the till materials were compacted to at <br />least 100 percent of the maximum remolded dry density, well over <br />the apeeified degree of ccmpaction, 958. eased on :these teat <br />results, we believe that the natural soils at the base of the <br />keyway trench were stable and did provide a suitable platform for <br />the fill materials. <br />4j ~/B/92: On this date, we observed some soft areas, which were <br />pumping and cracking, from stations 62+OO to 6700, we informed <br />Mr. McCUlloh of the conditions encountered in these areas, sae did <br />not teat the soils in this area, since they were located in a cut <br />area and not in a fill area. The soft areas ware observed shortly <br />after the roadway in this area had been cut to the proposed grade. <br />However, within one week after the area was cut to the grade, the <br />soft and wet areas appeared to have been stabilized and were not <br />pumping or deflecting. <br />zf you have <br />test results, <br />office. <br />Sincerely, <br />NORT8W4S 1 <br />Arian ti. ~kn, <br />any queetiona concerning this letter, our observations or <br />or if wg can be of further service, please contact this <br />P.E. <br />