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<br />100 EARTHWORK <br /> <br />100.1 <br /> <br />All ea rthwork sha 11 be in accordance wHh the So il s Report prepa red by <br />Ground Engineering Consultants, Inc., titled "Soil and Foundation <br />Investigation, Proposed Trickle Channel and Drop Structures, Goldsmith <br />Gulch, South of Belleview Avenue, Greenwood Village, Colorado", dated April <br />23, 1986; Job No. 86-191. As discussed in the above mentioned Soils Report; <br /> <br />"Fills up to 15 feet in height can be used 'if the fill slopes do not exceed <br />3 horizontal to 1 vertical and the fills ar2 properly compacted and drained. <br />The ground surface underlying all fills should be carefully prepared by <br />removing all organic matter, scarification to a depth of 8 inches and <br />recompacting to 95% of the maximum standa.r'd Proctor density prior to fill <br />placement. All fill should be placed under controlled conditions and <br />compacted to at least 95% of the standard Proctor denSity. The onsite soils <br />exclusive of the organic material are suitable for reuse as backfi'll material. <br />The materials encountered in our investi,'ation appeared to be over the <br />optimum moisture content and will have to be dried out prior to compacting <br />them". <br /> <br />The following conditions shall apply for earthwork on this Project: <br /> <br />1. <br /> <br />The earth with organic matter shall be stripped (the top six (6) inches <br />minimum) and stockpiled away from thE area to be graded. After the <br />grading is complete, the strippings shall be spread out over the <br />portion to be seeded. <br /> <br />2. <br />3. <br /> <br />The contours shown on the Plans are to finished grade. <br /> <br />Excess excavated material generated by the excavation operation shall be <br />placed where shown on the Drawings and compacted as required under this <br />section. <br /> <br />4. <br /> <br />Special care shall be taken to seal off and otherwise abandon the <br />existing Goldsmith Gulch Tributary channel adjacent to but not within <br />the proposed church site. This care shall include, but not necessarily <br />be limited to, placement in the channel of a selected, impervious <br />material acquired from required excavation, and increasing the compaction <br />effort of this fill to 98% of maximum standard proctor denSity. <br /> <br />EROSION CONTROL PROVISIONS <br /> <br />The Contractor shall be required to take pos'itive steps to control <br />erosion during construction. Erosion control measures may include hay <br />bales, construction of temporary secl'iment traps, or leav'ing channel <br />inverts upstream of grade control structures below finished grade until <br />the conclusion of construction. The Contractor shall submit an erosion <br />control plan to the Engineer py'ior to construction for review and <br />comment. No separate measurement and payment shall be made for <br />development of an erosion control plan, but the cost of such is <br />subsidiay'y to all work on the project. The Contractor is advised that <br />he is working in a drainage channel subject to intermittent and extensive <br />runoff conditions, such that unless the construction area is properly <br />protected, extensive soil erosion milY occur., The Contractor is <br />