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From: METRO CLEANING SERVICE, INC. <br />Page two <br />6S <br />4042231 <br />P03 <br />Recycled asphalt covered the surface of the area where we put down <br />the borings. Below the surface we encountered several inches of <br />sand with gravel which was underlain with a layer of cemented sand <br />and gravel and sand with gravel to at least 3' below grade. In <br />boring *1, more than 1' of cemented sand and gravel was recovered <br />in the split barrel sampler when driving the sampler from 6" to 1 <br />1/2' below the surface. We determined the upper portion of the <br />suhgrade was very stable. We did note the sampler became wet from <br />water when driven between 2 1/2' and 4' and at all lower sampling <br />intervals at both boring locations. <br />When sampling below 4' below grade wet, samples of interbedded sand <br />and gravel, organic silty sand, and peat were retrieved in the <br />split barrel sampler. The boreholed were left open from 10 to 20 <br />minutes after completion of the borings to observe the water level. <br />The water level rose to 38" below grade in boring *2 before the <br />boreholes were filled. <br />We did not observe any rutting of the surface in the area the <br />borings were placed. We understand this area was used for light <br />vehicle parking. On the southeast aide of the property there was <br />a storm water pond. The storm water pond indicated the subsurface <br />water conditions are high in the area and contribute to frost <br />heaving conditions. The bituminous pavement of Ryan Drive in front <br />of Metro Cleaning Services appeared to have several bumps in the <br />'pavement related to frost heaving. <br />PROFESSIONAL ENGINEERIIN CONSULTANTS, INC. <br />c4 4.1.4L1 <br />hn F. Gislason, J. , P.E. <br />Staff Engineer <br />JFG /fm <br />Page 21 <br />