6-45 Sectio N 613 – Ston E Fill and Riprap
613.0 1 DESCRIPTION . This work shall consist of furnishing and placing protective material s. 613.0 2 MATERIALS . Materials shall meet the requirements of the following subsection s: Sand Borrow and Cushion ................................ ................................ ......................... 703.03 Stone for Riprap, Heavy Type ................................ ................................ ................... 706.03(a) Stone for Riprap, Light Type ................................ ................................ ..................... 706.03(b) Stone Fill, Type I ................................ ................................ ................................ .......706.04(a) Stone Fill, Type II ................................ ................................ ................................ ......706.04(b) Stone Fill, Type III ................................ ................................ ................................ .....706.04(c) Stone Fill, Type IV ................................ ................................ ................................ ....706.04(d) E-Stone Fill, Type I ................................ ................................ ................................ ....706.05(a) E-Stone Fill, Type II ................................ ................................ ................................ ..706.05(b) E-Stone Fill, Type III ................................ ................................ ................................ .706.05(c) E-Stone Fill, Type IV ................................ ................................ ................................ .706.05(d) E-Stone fill shall be of the type specified on the Plans, supplemented with material excavated from the channel or the tailings of a topsoil screening operation. Bed material shall be approved by the Engineer and the Vermont Agency of Natural Resources prior to use . Similar sized river sediment is an acceptable alternative as is a mixture of angular material and river sediment. 613.0 3 PREPARATION . The areas to be protected shall be constructed and graded to the lines shown on the Plans or as directed by the Engineer and, if a fill area, shall be compacted . All slope s shall be maintained to the neat lines shown on the Plans prior to the placing of filter or bedding material , stone fill, or riprap. 613.0 4 PLACING .
a.E-Stone Fill and Stone Fill . The specified stone fill shall be placed as shown on the Plans in a manner that will result in a reasonably well graded surface. Care shall be taken in the placing to avoid displacin g the underlying material . Stone fill placed inside of a closed structure shall be placed such that the structure is not damaged. The stones shall be so placed and distributed that there will be no segregation of either the larger or smaller sizes of stone .
6-46 Rearrangement of the stone fill by hand labor or mechanical equipment may be required to obtain
the specified results. When stone fill and gravel filter are to be placed as part of an embankment , the protective material s shall be placed concurrently with the construction of the embankment , unless otherwise directed by the Engineer. Where stone fill is to be placed under water, methods shall be used that will minimize segregation and ensure that the required thickness of p rotective material will be obtained. Once all material has been placed, the Contractor shall slowly wet the stream to minimize the effects of the initial sediment pulse . Every attempt shall be made to minimize the movement of sediment downstream of the sit e. Sand borrow shall be added to seal the bed and prevent subsurface flow as directed by the Engineer. There shall be no subsurface flow upon final inspection.
b.Riprap . The stones shall be placed on the prepared slope or gravel filter so that there will be a minimum of space between the stones . The depth of each stone shall be equal to the thickness of the course shown on the Plans . The voids between the stones shall be chinked with smaller stones to produce a relatively smooth and uniform surface. 613.0 5 METHO D OF MEASUREMENT . The quantities of E-Stone Fill, Stone Fill , and Riprap of the type specified to be measured for payment will be the number of cubic yards of the material specified installed in the complete and accepted work , measured within the limits shown on the Plans or as directed by the Engineer. 613.0 6 BASIS OF PAYMENT . The accepted quanti ties of E-Stone Fill, Stone Fill , and Riprap of the type specified will be paid for at the Contract unit price per cubic yard . Payment will be full compensation for furnishing, transporting, mixing, and placing the specified material and for furnishing all labor, tools, equipment , and incidentals necessary to complete the work . Excavation required for placing stone fill, riprap, and the gravel filter or bedding material will be paid for at the Contract unit price per cubic yard for the same type of excavation removed directly above the face of the protective material s, except tha t when no other type of excavation has been removed, excavation will be paid for under an appropriate excavation pay item. Unless otherwise shown on the Plans, the filter blanket will be paid for under Gravel Filter for Slope Stabilization.
6-47 Payment wil l be made under:
Pay Item Pay Unit 613.0601 E -Stone Fill, Type I ................................ ................................ ................... Cubic Yard 613.0602 E -Stone Fill, Type II ................................ ................................ ................. Cubic Yard 613.0603 E -Stone Fill, Type III ................................ ................................ ................ Cubic Yard 613.0604 E -Stone Fill, Type IV ................................ ................................ ................ Cubic Yard 613.10 01 Stone Fill, Type I ................................ ................................ ...................... Cubic Yard 613.1 002 Stone Fill, Type II ................................ ................................ ..................... Cubic Yard 613.1 003 Stone Fill, Type III ................................ ................................ .................... Cubic Yard 613.1 004 Stone Fill, Type IV ................................ ................................ ................... Cubic Yard 613.15 10 Riprap, Light Type ................................ ................................ .................... Cubic Yard 613.1 520 Riprap, Heavy Type ................................ ................................ .................. Cubic Yard 6-48SECTIO N 614 – STREA M DIVERSIO N AND IN-WATE R SEDIMEN T ISOLATIO N MEASURES 614.0 1 DESCRIPTION . This work shall consist of implementing adequate control measures to protect the flow of water through the construction site using temporary stream relocation or in -water sediment isolation measures . This shall include designing, furnishing, installing, maintaining, and removing the control measures, as well as erosion prevention and sediment control, channel m aintenance, and debris removal in accordance with these specifications. 614.0 2 MATERIALS . Materials shall meet the requirements of the following subsections: Stone Fill ................................ ................................ ................................ .................... 706.04 Geotextile for Roadbed Separator ................................ ................................ .............. 720.02 Geotextile Under Stone Fill ................................ ................................ ....................... 720.04 Geotextile for Filter Curtain ................................ ................................ ....................... 720.06 Other materials which effectively separate sediment or pollutants from waters of the state, as defined in the Vermont Water Quality Standards , may be used. These shall be detailed on the EPSC plan and are subject to approv al. 614.0 3 TEMPORAR Y RELOCATIO N OF STREAM .
a.Submittals . Prior to beginning the work under this section , the Contractor shall submit to the Engineer site -specific plans, including all construction, erosion prevention and sediment control, and maintenan ce details, for providing temporary stream relocations at the stream crossings specified in the Plans. These details shall be developed in accordance with the requirements of Section 653 and will be considered a component of the overall project EPSC plan. All relocation plans shall be reviewed by applicable regulatory agencies and approved by the Engineer prior to beginning work. These plans shall adequately provide for the storm generated flow values listed on the Plans and shall be stamped by a professional engineer . The plans shall address erosion prevention and sediment control, channel maintenance, debris removal, and the materials and methods of creating the upstream diversion from the existing channel. These plans shall conform to any state and federal permits which have been issued for th e project, or the Contractor shall be responsible for obtaining the necessary amendments to those permits.
b.Construction Requirements . The Contractor shall maintain the relocated stream channel for the duration of its existence so as not to impact the free flow of the stream or to increase any flood levels or potential for property damage upstream or downstream of the project site. Unless otherwise approved, existing flow shall be maintained for the durati on of the relocation.
Source: Vermont Standard Specifications for Construction, 2024 Edition. Pages 819–821 of 1,380.