S01 Amendment 01 Spec 03 Revised.pdf
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- Attached to
- ARS Woodward Embankment Rehabilitation
- Solicitation number
- 12FPC322R0007
About this file
This document provides specifications for rehabilitation of the ARS Field Station Dam in Woodward County, Oklahoma. The project will rehabilitate the single purpose, high hazard, earthen embankment dam constructed in 1937 to meet current high hazard criteria. Key work items include boring and jacking a new 30-inch principal spillway pipe through the existing dam, building a new principal spillway tower, and building a roller compacted concrete auxiliary spillway over the top of the existing dam. Additional items are disposing of and filling in the existing concrete auxiliary spillway, clearing and grubbing, and disposing of trees and vegetation from designated areas. Bid item 2 involves removal of the existing principal spillway inlet, trash guard, segments of conduit and water line, power lines and poles, and existing pump container and appurtenances. The concrete from the auxiliary spillway is to be removed from the site by the contractor. The Department of Agriculture Under Secretary for Farm Production and Conservation is the agency for this federal contract opportunity.
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Text version
NRCS – 11/17 3-
OK – ARS WOODWARD
7. Items of work and construction details
Buried material shall have a minimum earthfill cover of not less than 2 feet. The cover shall be placed in two lifts with each lift compacted by traversing the entire surface with one tread track of the material placement equipment. The top lift shall be mounded at least 6 inches higher than the surrounding undisturbed area to prevent unsightly depressions after settlement. The finished surface of the disposal area shall be uniformly graded to prevent ponding of water.
Items of work to be performed in conformance with this specification and the construction details are:
a. Bid Item 2, Structure Removal
(1) This item consists of removal of the:
(a) Existing principal spillway inlet,
(b) Inlet trash guard,
(c) Specified segments of the conduit,
(d) Specified segments to the water line,
(e) Power lines/poles to the existing pump,and
(f) Existing container for pump and any associated appurtenances.
(2) This item also consists of removing the concrete auxiliary spillway structure and the existing concrete inside dike.
(3) In Section 2, Marking, Method 1 will apply.
(4) In Section 3, Removal, Method 1 will apply
(5) All material removed, except for the concrete from the auxiliary spillway, shall be burned, buried in the designated waste area, or salvaged and become the property of the contractor.
(6) The concrete from the auxiliary spillway shall become the property of the contractor and removed from the site.
(7) In Section 6, Measurement and Payment, Method 2 will apply.
(8) Items of work subsidiary to this bid item are:
(a) Fence Removal – Construction Specification 3,
(b) Excavation, Common, P.S. and Drain Pipe Abandonment – Construction Specification 21, and
(c) Earthfill, P.S. and Drain Pipe Abandonment – Construction Specification
23.
b. Subsidiary Item, Fence Removal
(1) This item consists of the removal of existing fences and fence remnants marked by Method 1 as specified in Section 2 of this specification as necessary to
NRCS – 11/17 3-
OK – ARS WOODWARD
prosecute work.
(2) In Section 3, Removal, Method 1 will apply.
(3) All material removed shall be burned, buried, or salvaged and become the property of the contractor.
(4) No separate payment will be made for fence removal. Compensation for this item will be included in the payment for Bid Item 2, Structure Removal.
c. Subsidiary Item, Wave Berm Riprap and Bedding Removal
(1) This item consists of removing the riprap and bedding on the wave berm where the existing principal spillway and drain pipe will be grouted and where the new principal spillway conduit will be bored and jacked.
(2) The existing wave berm riprap and bedding shall not be removed beyond the excavation limits shown on the drawings
(3) All wave berm riprap and bedding removed shall be wasted in the areas shown on the drawings.
(4) No separate payment will be made for Wave Berm Riprap and Bedding Removal.
Compensation for this item will be included in the payment for Bid Item 22, Wave Berm Riprap.
File details come from the government source that posted it. Updated .