Laserfiche WebLink
1 <br /> <br /> <br /> <br /> <br /> <br />lJ <br /> <br />materials. Open pipes shall be temporarily capped, as needed, for protection from runoff flows <br />or nearby earthwork in progress. <br />Fill shall be of inorganic soil or rock materials. The suitability of all materials intended for use <br />in fill construction shall be subject to approval by the Engineer. Except as otherwise specified, <br />or approved by the Engineer, compacted fill materials shall be placed on moist surfaces. <br />7'he distribution of materials within any given zone shall be such that the fill is free from lenses, <br />pockets, streaks, or layers of material differing substantially in texture or gradation from the <br />surrounding material. The combined borrow excavation and fill placement operation shall be <br />such that the materials, when placed within the fill areas, shall be blended sufficiently to secure <br />the best practicable distribution of the material, subject to the approval of the Engineer. Where <br />the gradations of two materials are not compatible, in the opinion of the Engineer, the <br />Contractor shall place and compact, as specified, not less than two ft of material of an <br />intermediate gradation between the incompatible materials. <br />If, in the opinion of the Engineer, the surface of the prepared foundation or the surface of any <br />' layer of the fill is too dry or too smooth to bond properly with the layer of material to be placed <br />thereon, it shall be moistened and/or worked with a harrow, scarifier, or other equipment to <br />provide a satisfactory bonding surface before the next layer of fill material is placed. If, in the <br />opinion of the Engineer, the prepared foundation surface is too wet for proper compaction of <br />the fill material to be placed thereon, it shall be removed and allowed to dry or shall be worked <br />with a harrow, scarifier, or other equipment to reduce the moisture content to the required <br />amount, and then compacted before the next layer of fill material is placed. <br />Unless otherwise approved by the Engineer, the slope of rock or cemented soiy surface against <br />which compacted fill is to be placed shall not be steeper than 1H:1V and no steeper than 2H:1V <br />in the case of foundation soil surfaces. <br />' 6.2 Tailings Disposal Area Fill Material <br />6.2.1 Type 1 Material <br />' The Contractor shall furnish, transport, and place Type 1 material as set forth in these <br />Specifications, or as specified by the Engineer. <br />Type l material will be utilized for the conswction of the pervious drainage blanket on the <br />' upstream portion of the main starter embankment and for Phase II lifts. Type 1 material shall <br />be placed to the lines and grades specified on the Drawings. Type 1 material shall consist of the <br />-i:- <br /> <br />