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SECTION 3137 00 <br />RIPRAP <br />1. Scope <br />The work shall consist of the construction of rock riprap revetments and blankets, including filter or bedding <br />where specified. <br />2. General <br />Riprap shall be in accordance with this section. Riprap shall be furnished and placed to the prescribed outlines <br />and thicknesses for the protection of slopes, channels, and structures at the locations shown on the drawings and <br />elsewhere as directed by the Owner /Engineer. The Contractor shall neatly place in stockpile riprap material at the <br />locations shown on the drawings. The material in this stockpile shall meet the gradation requirements for riprap <br />of nominal thickness of 12 inches. <br />Prior to any Contractor operations in the riprap source, if requested, the Contractor shall submit, to the Engineer <br />for approval, his plans for developing the source and transporting the materials to the dam site. The plans shall be <br />in sufficient detail to indicate full compliance with this section. The Contractor shall furnish to the Engineer, <br />without cost to the Engineer, such samples of rock materials for testing as may be required by the Engineer from <br />proposed quarry sites and from rock materials delivered to the dam site. <br />All rock materials not meeting the requirements of these specifications, as determined by testing and /or <br />inspections at the quarries or at the dam site, will be rejected. All rejected materials shall be disposed of in an <br />approved manner at the expense of and by the contactor. <br />3. Material Source <br />Rock riprap may be obtained from any approved source. Samples of rock from the riprap sources, located as <br />shown on the drawings, have been tested, and the samples were found to be of suitable quality, and these sources <br />have been approved. Tests have not been made to determine the relative difficulty of obtaining rock fragments of <br />the specified sizes. The contractor is cautioned that rock from the above - mentioned sources may be variable in <br />quality and sizes; that only selected Iocations and strata within the source will produce acceptable rock; and that <br />the quantity of acceptable rock fragments which may be obtained from the sources is unknown. <br />The Contractor shall make all arrangements with property owners for right -of -way, and shall pay all costs <br />including any royalties for firrnishing materials of approved quality and gradation from any other approved <br />sources. The Owner /Engineer reserves the right to make inspections of quarry sites and quarries. The approval <br />by the Owner /Engineer of some rock fragments from a particular quarry site shall not be construed as constituting <br />the approval of all rock fragments taken from the quarry, and the contractor will be held responsible for the <br />specified quality and gradation of rock fragments delivered to the dam site. <br />4. Quarry Operations <br />The Contractor shall acquire any necessary permits required in the quarry operations. The contractor shall also <br />clear, strip, develop, and operate the quarries; excavate and transport the rock materials; dispose of waste <br />materials; construct and maintain haul roads; and perform all other operations required to produce acceptable <br />riprap materials. <br />313700- 1 <br />