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Additionally, the finished grade is to be free of large ruts, logs, <br />boulders, trash or other debris. <br />I. GRUBBING AND CLEARING <br />The City will conduct a clearing operation at the excavation site, <br />to remove most of thefoliage, however after July 1, any foliage <br />which remains and must be removed to perform the work, will be the con- <br />tractors responsibility. The Contractor shall include in his unit bid <br />price, an allowance for any incidental grubbing and clearing, and for the <br />proper disposal of any materials which result. Trees and other combus- <br />tibles may be burned by the Contractor on a site to be designated by the <br />Engineer. <br />J. ROCK EXCAVATION <br />No continuous seam of rock is to be excavated. In the event that a <br />seam of rock is encountered, the Engineer shall be notified and excavation <br />will either be stopped or transferred to another location. A seam of rock <br />shall be defined as a continuous stone ledge, six inches or more in thick- <br />ness, that may or may not include thin interbedded seams of soft material <br />or shale. The vertical limits of a ledge of rock shall be determined by <br />beds of soft material or shale more than twelve inches thick. <br />Individual boulders or detached stones do not constitute a seam of <br />rock. Nor will shale, fine clay, chert (joint flint rock) broken <br />intermittent clayey parting or clay seams, stratified chert cemented with <br />clay seams (hardpan), and plain or bituminous bound bases or surface <br />courses of macadam, gravel, broken stone, or similiar materials be <br />considered to constitute a seam of rock. <br />K. SPREADING AND COMPACTING OF EARTH COVER <br />Earth cover material is to be spread over locations designated by the <br />Engineer, to a final compacted depth of one foot. The general location <br />of the area in which cover is to spread is generally located in, but <br />not limited to, the portion of land known as "Bulls 40 AC." Should the <br />excavation site provide more cover material than is required in the "Bulls 40 <br />AC." location, the remaining material will be spread as cover in the <br />northern part of the portion of the landfill known as "Porter 46 AC.". <br />II-4 <br />