SOLICITATION NOTICE
F -- Town Pond Restoration, Portsmouth, Rhode Island
- Notice Date
- 3/14/2005
- Notice Type
- Solicitation Notice
- NAICS
- 237990
— Other Heavy and Civil Engineering Construction
- Contracting Office
- US Army Engineer District, New England, 696 Virginia Road, Concord, MA 01742-2751
- ZIP Code
- 01742-2751
- Solicitation Number
- W912WJ-05-B-0007
- Response Due
- 5/2/2005
- Archive Date
- 7/1/2005
- Small Business Set-Aside
- N/A
- Description
- The U.S. Army Corps of Engineers is issuing an Invitation for Bid for the Town Pond Restoration, Portsmouth, Rhode Island. Town Pond is located in Portsmouth, Rhode Island adjacent to Mount Hope Bay. The modern historical condition of the Town Pond a rea was tidally influenced open water prior to a Corps navigation improvement project placing dredged material in the area in the early 1950s. At that time, tidal exchange to the interior marsh was effectively halted. The Town Pond Restoration Project call s for a combination of fifty-percent salt marsh-fifty percent open water/intertidal habitats with on-site disposal of excavated material. This was selected as the best overall plan for habitat restoration, aesthetic acceptability and affordability. An esti mated 126,000 cubic yards of existing dredged material would be excavated to promote restored tidal exchange to Town Pond. Over time, the interior marsh will be transformed from a lower value brackish habitat to a high value salt pond and salt marsh habita t. The excavation and regrading of the area to reach the new profile will require the establishment of an effective plan for control and diversion of water. There will be some vegetation removal in the staging and access areas (approximately 1 to 2 acres o f upland vegetation at the southeastern end of the site off Anthony Road) on the Roger Williams College property. The size of disturbance of the staging area, access roads and temporary haul roads will be limited to the minimum necessary for construction a ccess and a line of erosion control devices will be established along the perimeter. Temporary haul roads will be removed following their use and these and other areas will be allowed to revegetate following construction. Areas with severe slopes or distur bed soils with a high potential to affect water quality will be replanted to limit erosion. A small area of salt marsh (approximately 80 square feet) will be destroyed to deepen and realign the entrance channel inlet. Salt marsh plants there will be remove d by others prior to construction and planted along the new channel alignment to reestablish a salt marsh cordgrass fringe resulting in no net change in wetland area. Approximately 18 acres of phragmites, which is above the elevation of tidal influence, wi ll be removed to restore salt marsh and estuarine habitat. Once the new elevations are established and are flooded by frequent tides estuarine habitats and vegetation communities will establish. There are two concrete structures that will be built as part of the project. A 45-foot long, 42-inch diameter culvert with concrete headwalls will replace a smaller old culvert that will be removed and a concrete weir approximately 38 feet long will be built to regulate a permanent pool where the entrance channel me ets the interior marsh. The plan requires some phragmites wetland filling to construct a water control berm along the west side of the site to prevent flooding of Founders Brook by salt water. The water control berm would fill approximately 3.2 acres of w etland and the public access area would fill approximately 0.35 acre of wetland. The berm would be covered by 6 inches of approved cap material and seeded with coastal grass and shrubs would be planted along the top. Some excavated material would be used t o construct a 6,750 square foot parking area with an entrance off of Anthony Road. The restoration plan has on-site disposal of excavated material in phragmites wetlands. The plan would require 7 acres of wetland fill. The disposal area will be covered by 6 inches of approved cap material and seeded with coastal grasses (e.g. switchgrass) after construction is complete to create a coastal grass community. During the construction phase, there will be provisions to allow continued maintenance access to the ex isting electric transmission lines that run through the project area. THIS SOLICITATION IS UNRESTRICTED. Solicitation shall be made available via the Internet on or about 3/31/05. No paper copies of the solicitation or amendments will be available. The firms interested must register on the Internet to receive the solicitation. Registration instructions are available on the Internet at http://www.nae.usace.army.m il as well as the media by which the solicitation will be made available. Amendments, if any, to this solicitation will be made available at this Internet site. Neither telephonic, mailed nor fax requests will be accepted. Those registering are responsible for the accuracy of the information on the registration list. All responsible sources may submit a bid, which will be considered by the New England District.
- Place of Performance
- Address: US Army Engineer District, New England 696 Virginia Road, Concord MA
- Zip Code: 01742-2751
- Country: US
- Zip Code: 01742-2751
- Record
- SN00768299-W 20050316/050314212201 (fbodaily.com)
- Source
-
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