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T 5 <br /> PROJECT WORK DESCRIPTION <br /> Task 1 <br /> Mobilize and Demobilize Crew and Equipment <br /> Measurement and Payment <br /> Payment for Task 1 shall be reflected in a lump sum bid price under Item 1 on the Invitation and <br /> Bid sheet. Payment shall include all the CONTRACTORS expenses for mobilization of <br /> equipment to the site, transportation of the equipment within the Project Area, employee time, <br /> labor and materials necessary to accomplish the requirements of this Task, compliance with the <br /> conditions and requirements described in this Task description, and finial clean up of the work <br /> place. <br /> If the price bid for mobilization and demobilization is greater than 15 percent(15%)of the total <br /> contract price, invoices supporting the mobilization costs will be required before payment is <br /> approved. <br /> Payment shall be made as described in Specification 1.0, Mobilization/Demobilization of the <br /> General Bid Specifications, Colorado Inactive Mine Reclamation Program, 2006. <br /> Task 2 <br /> Sediment Pond Maintenance: <br /> The sediment pond was constructed within the margins of the ephemeral stream which drains <br /> through the mine site. The sediment pond is in need of repair in order allow flood waters to <br /> safely pass the existing embankment. <br /> -� <br /> &V�hKf{c n e rN M�s <br /> =The 3Ue <br /> MP)riser.pipe�'located in the sediment pond w&aeed#o be cut and removed at the <br /> base. 30"CMP pipe and associated items will need-ta be disposed in an approved landfill <br /> or salvaged by the CONTRACTOR. The underground portion of the 30" pipe will be plugged <br /> with concrete to a length of 4 feet. The concrete shall consist of Type 11 Portland Cement, <br /> conforming to ASTM C 150, unless otherwise approved by the PROJECT MANAGER. <br /> aAT..,A'fe ?°ws-Vf rar-r 1 c",rtror %l' &,&T-n4-r- (-/ta.•"n - <br /> The existing emer ncy spillway on the est side of the pond will be lowered 2 feet and lined <br /> with rip-rap on site. The chan el will remain trapezoidal in shape with 2.5H:1V side <br /> slopes. The spillway dimensions ar approximately 50 feet long by 8 feet wide(bottom width). <br /> The spillway will need to be lined w' h rip-rap for a length of 75 feet along the inside of the <br /> channel and down the pond slope o safely pass flood waters. Rip rap, available on site,will <br /> consist of 12"to 18"diameter rock. Placement will be such that voids will be eliminated with rock <br /> contacting rock. The rock will be keyed in place on the beginning of the spillway to a depth of 3'-_ <br /> feet and spaced every 20 feet with the last key at the end of the spillway. Side slope rip rap will <br /> extend up the sides of the constructed channel to a minimum 4'heighiL dir eke 5 <br /> (- t i <br /> Measurement and Payment <br /> There will be no measurement for payment of Task 2, Sediment Pond Maintenance. Payment <br /> for this Task will be reflected in a lump sum bid under Item 2 on the Bid Schedule. This lump <br /> sum bid will cover all costs for excavating, hauling, placing and rip-rap lining as described in <br /> -7- <br />