FY16 Boardman River Dam Removal

Added: Dec 18, 2015 2:44 pm
Sources Sought:

FY16 Boardman River Dam Removal

The U.S. Army Corps of Engineers Detroit District is seeking contractors for the FY16 Boardman River Dam Removal project. The place of performance is Traverse City, Michigan.

The work to be completed consists of four major components, and includes installation and maintenance of erosion and sedimentation control measures for each:
1. The breaching and removal of the Boardman Dam earthen embankment.
2. Restoration of the Boardman River for approximately 10,000 linear feet from Sabin Pond through the extents of the former Boardman impoundment.
3. Demolition and removal of the Boardman Dam powerhouse, intake works and existing Cass Road Bridge.
4. Construction of 400 linear feet of Cass Road roadway.

BREACHING AND DAM REMOVAL SUMMARY:
Breaching and Dam Removal generally consists of:
a. Site clearing and installation of construction access drives.
b. Excavation of temporary channel from proposed energy dissipation structures to Sabin impoundment.
c. Construction of energy dissipation structures for siphon outlet and auxiliary spillway.
d. Excavation of earthen dam and demolition of concrete core wall to elevation 646.00. Temporarily stockpile roughly 12,000 cubic yards of material adjacent to existing intake channel, to be graded into intake channel later.
e. Installation and operation of siphon dewatering system capable of passing 400 cubic feet per second (cfs). Dewatering will occur at a maximum rate of 1 foot per day.
f. Excavation of auxiliary spillway downstream of core wall and installation of articulated block channel armoring with crest elevation of 638.00.
g. Excavation of auxiliary spillway upstream of core wall and demolition of core wall to elevation 638, always maintaining a minimum 3 feet freeboard on the core wall.
h. Removal of articulated block as necessary to excavate auxiliary channel crest to elevation 630. Reinstall articulated block armoring.
i. Excavation of auxiliary spillway upstream of core wall and demolition of core wall to elevation 630, always maintaining a minimum 3 feet freeboard on the core wall.
j. Removal of articulated block as necessary to excavate auxiliary channel crest to elevation 623. Reinstall articulated block armoring.
k. Excavation of auxiliary spillway upstream of core wall to elevation 623. Demolition of core wall to elevation 627 in the dry. Demolition of core wall to elevation 623 in the wet with a maximum drawdown rate of 1 foot per day.
l. Dismantle and remove siphon dewatering system.
m. Construct access drive into impoundment upstream of earthen dam.
n. Once impoundment is dewatered to 625, excavate proposed river channel and concrete core wall.
o. Excavation material to be spoiled in intake channel and used as Cass Road embankment material if passing MDOT Class II criteria.
p. Finish grading and seeding and restoration of dam breaching area.

SEDIMENT MANAGEMENT AND RIVER RESTORATION SUMMARY:
Sediment Management and River Restoration generally consists of:
1. A large deposit of sediment has accumulated in the upstream portion of the Boardman Pond (Impoundment), as noted on the Drawings. The intent is to excavate a corridor through this sediment, wasting material in adjacent disposal areas as noted, to expose the pre-dam Boardman River channel. The average channel dimensions used for grading are a 60-62 foot wide channel top width, 3.3-3.5 foot (average) bankfull depth, and a total of 40 feet of floodplain in alternating widths between the left and right banks. Dimensions will be both deeper and shallower than average to account for pool and riffle development. Dimensions increase slightly in the downstream direction. All cut slopes are 3H:1V (horizontal to vertical) unless steeper native slopes are encountered.
2. The sediment accumulation in the delta above +/- Station 210+00 is primarily sand. The nature and extent of material between approximately Station 210+00 to 177+00 (the dam embankment) is expected to consist of primarily fine material and will be revealed during drawdown of the pond.
3. As finished grades are reached indicators such as the gravel bed of the pre-dam channel and stumps of trees along the pre-dam banks will help guide detailed grading as the old river channel is exposed. Additional restoration including the enhancement of pool and riffle features and the addition of large wood habitat may occur if budgets allow, but are considered additive items for bidding.
4. Sediment removal may occur under the most efficient means possible, including mechanical, hydraulic, or otherwise. The contractor will provide a detailed submittal of the means and methods for excavation and sequencing using the lowest cost and most effective method. The approach utilized must minimize the transport of sediment downstream of the dam to the extent feasible. Sediment traps will be used to collect material that will mobilize through the work area as an additional control to minimize sediment transport. Controlled drawdown of the headpond will also be used to minimize sediment transport. Some sediment is expected to mobilize and be transported within the work area and downstream of the dam as part of the project.

DEMOLITION OF POWERHOUSE, INTAKE WORKS AND EXISTING CASS ROAD BRIDGE:
Demolition of Powerhouse, Intake works and existing Cass Road Bridge generally includes:
a. Coordination with Owner for removal of powerhouse equipment and intake gate equipment.
b. Demolition and removal of powerhouse, substructure, spillway, substation, bridge and retaining walls.
c. Nonhazardous materials may be disposed of onsite, in former intake channel, according to local, state and federal regulations. Disposal site shall be capped with 3 feet of fill, topsoil and seed.
d. Sampling of wiring and roofing materials for asbestos, lead based paint survey and an inventory of building components that may contain PCBs, mercury, chlorofluorocarbons, refrigerants, and other potentially hazardous materials.
e. All hazardous material shall be disposed of according to local, state and federal regulations.
f. Coordination with utility companies for removal power service and work around utilities.

CONSTRUCTION OF CASS ROAD
Construction of Cass Road generally consists of:
a. Removal of guardrail, barrier, traffic signals, HMA, and excavation of earthen material to subgrade.
b. Earthworks for preparation of roadway embankment.
c. Installation of aggregate base, HMA and pavement striping.
d. Seeding and restoration of site.
e. Coordination with utility companies for work around utilities.

The contract will have an estimated 700 calendar day completion requirement. The contract is expected to be awarded in August 2016.

The estimated cost of construction is between $5,000,000 and $10,000,000 million.

The North American Industrial Classification System (NAICS) code is 237990 Other Heavy and Civil Engineering Construction, which has a size standard of $36.5 Million in average annual receipts.

This is NOT an Invitation for Bid. This announcement is for planning purposes only. Qualified companies are encouraged to respond. The response to this notice shall be in summary format and shall not exceed six (6) pages, including the attached response form. In order to determine the extent of industry interest and experience in the project, interested contractors shall present the following information:

1. A completed Sources Sought Information Request Form located in this "Sources Sought" notice on www.FBO.gov.

2. If applicable, identification and verification of the company as a Small Business, HubZone, 8(a), Service Disabled Veteran Owned Business, and/or Woman Owned Small Business, subject to verification by the Small Business Administration.

3. A letter from the firm's bonding company verifying that the firm can be bonded up to the amount of this project (construction bonding level per contract and aggregate construction bonding level, both expressed in dollars).

4. Past Experience - provide descriptions of four projects substantially complete or completed that are similar to this project in size, scope, and dollar value.

Qualified companies, regardless of their size or socio-economic status, are encouraged to respond. No basis for claim against the Government shall arise as a result of a response to this sources sought or Government use of any information provided. The Government will not pay for information or comments provided and will not recognize any costs associated with submission of comments.

All companies that are interested in responding are invited to submit their information via email only to the Contracting Branch at LRE-Quotes@usace.army.mil and Carlette.L.Williams@usace.army.mil.

Responses must be provided in either Microsoft Word or Adobe Acrobat PDF format. Please submit responses no later than the time stated in this notice on www.fbo.gov. Please reference "SOURCES SOUGHT: W911XK-16-R-0006 FY16 Boardman River Dam Removal" in the subject line. Respondents will not be contacted regarding their submission or information gathered as a result of this Sources Sought notice. The formal solicitation will be issued at a later date by a separate announcement.