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Measurement and Payment There will be no measurement for payment. Payment for this task will be refleded in a lump sum bid under Item 3 on the Bid Schedule. This lump sum bid will cover all costs for cutting of the CMP riser, offstte disposal of the excess CMP material, excavation of the embankment, form censtrud'an, purchase and installation of the bentontte, purohase and installaton of the concrete, badcfilling and cempadion over the concrete, censtrudion and installation of the hinged steel grate. Payment shall be as this task is completed and approved by the PROJECT MANAGER. Such payment shall be considered full compensation for all labor, materials, equipment and all other items necessary and incidental to the cemplefan of Task 3, Sediment Pond Dewatering Device Repair. Task 4 Sealing Sediment Pond In order to minimize the infiltration of water from the sediment pond, bentonite will be placed within the pond. Bentonite shall be placed on the base of the pond and up the side slopes to the elevation of the lowest inlet of the CMP riser. The area of the pond to be affected by this Task is estimated to be frfteen feel (15') in width, three hundred feet (300') in length and about three feet (3') in depth. CONTRACTOR shall ensure that the pond is free of water prior to initiating this Task. Upon completion of dewatedng, 'rf necessary, CONTRACTOR shall stake the elevation of the side slopes of the pond at the elevation of the lower most inlet to the CMP riser. In order to ensure that the proper elevation is established, the use of a tdpod mounted surveyors level is required. The surface area of the pond to be afteded by this Task shall be scarified to a depth of four inches (4') through the use of a disc harrow. Two inches (7) of dry bentonite shall be placed on the prepared work area after the discing is completed. This material will be worked into the base and side slopes of the pond by discing the afleded area until the bentonite is well incorporated into the scarified surface. Measurement and Payment There will be no measurement for payment. Payment for this task will be refleded in a lump sum bid under Item 4 on the Bid Schedule. This lump sum bid will cover all costs for identifying the area to be affeded by this Task, preparation of the area, and purohase and installation of the bentonite matedals. Payment shall be as this task is completed and approved by the PROJECT MANAGER. Such payment shall be considered full compensation for all labor, materials, equipment and all other items necessary and incidental to the completion of Task 4,Sealing Sediment. Task 5 Equipment Rental Areas in and adjacent to the Projed Area may require slope redudion, excavation or erosion control work. CAT 4168 Badchoe loader or equivalent 74 fhp machine with operator and a five (5) cubic yard onloft highway end dump truck with operator shall be furnished for additional work as needed. Additional rip rap materials maybe needed to armor areas outside the rolled dip, and low water crossings. It is estimated that up to twenty cubic yards (20 yd 3) additional rip rap material may be required. Of this, ten cubic yards (10 yd 3) must consist of two-inch (7) screened rode, and ten cubic yards (10 yd 3) must consist of dean four inch (4') rode. The use of the rip rap material is NOT guaranteed. The hours outlined in Item 5 of the Bid Schedule an: NOT guaranteed. All work will be accomplished accerding to SpeciFicalan 19.0, Equipment Rental, attached. Measurementand Payment Measurement and payment will be made as per Specfication 19.0, Equipment Rental, which is attached. Payment will be made at the unit prices established in Item 5 of the Bid Schedule. The hours outlined in Item 5 of the Bid Schedule an: NOT guaranteed. Rip Rap will be paid by the cubic yard installed al the unit price bid in Item 5 of the Bid Schedule. The use of the additional rip rap material is NOT guaranteed.