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CONTRACTOR will be used on an "on call" basis and must be available at the site <br /> with the specified equipment by 9:00 a.m. the morning following notification by the <br /> PROJECT MANAGER. <br /> Although machine time is NOT guaranteed, it is estimated that the dozer and <br /> backhoe/loader may be used for up to 32 hours each. Depending upon site conditions, <br /> additional utilization of any one piece of equipment may be required. <br /> Sediment Control <br /> Sediment control measures may be installed at some areas. CONTRACTOR will <br /> supply prefabricated silt fence with posts (Mirafi Prefabricated Silt Fence with Posts <br /> having a 2-foot width and 3 feet between posts, or equivalent), or straw bales and <br /> rebar, as specified by PROJECT MANAGER. Silt fence, when used, shall be installed <br /> as per Figure 2, Typical Silt Fence Installation, attached. Straw bales, when used, <br /> shall be placed flat on the ground surface. Dirt shall be shoveled in front of the bales in <br /> order that water cannot seep under or between bales. Two (2), four feet (4') lengths of <br /> three eighths inch (3/8") diameter rebar shall be driven through each bale. One length <br /> of rebar will be installed eight inches (8") from each end of a bale. The rebar shall be <br /> driven through the bales and into the ground so that no more than four inches (4") of <br /> rebar is exposed above the bale. Sediment control measures shall be placed in <br /> locations designated by the PROJECT MANAGER. Use of these materials is NOT <br /> guaranteed. <br /> Rip Rap Materials <br /> Durable rock rip rap materials may be utilized to protect stream banks, if needed. <br /> Acceptable rip rap materials will consist of angular rock composed of granitic or <br /> metamorphosed materials. Sandstone and shale materials are not acceptable. Rip rap <br /> materials will be sized so that the narrowest dimension of any one rock is no less than <br /> twenty four inches (24"). PROJECT MANAGER may reject any rock which is <br /> undersized, rounded or composed of unacceptable materials. CONTRACTOR may be <br /> directed to obtain, deliver and place rip rap materials if the need arises. Use of these <br /> materials is NOT guaranteed. <br /> c:lsgrlbidsbbspg00 <br /> 6 <br />