Skokomish RM 6.5 Habitat Restoration Project, Mason Conservation District, Shelton, WA #2026-02
$1,000,000 to $2,500,000
Plans
Specs
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Addendum #1
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Builders Exchange of Washington, Inc. Subs and Suppliers
Owner:
Mason Conservation District
450 W Business Park Road
Shelton, WA 98584
accounting@masoncd.org
Contact: Matt Phillips
360-968-3704
mphillips@masoncd.org
Issued by:
www.bxwa.com
Prebid: Mandatory: 2/25 @ 10:00 am at the project site
Notes:
Also incorporated into the Contract Documents by reference are:
•Manual on Uniform Traffic Control Devices for Streets and Highways, currently adopted 32 edition, with Washington State modifications, if any:
https://wsdot.wa.gov/engineering-standards/all-manuals-and-standards/manuals/manual-uniform-traffic-control-devices-mutcd
•Standard Plans for Road, Bridge and Municipal Construction, WSDOT/APWA, current 36 edition:
https://wsdot.wa.gov/engineering-standards/all-manuals-and-standards/standard-plans
•2024 Stormwater Management Manual for Western Washington (SWMMWW):
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/stormwater-permittee-guidance-resources/stormwater-manuals
•2019 Temporary Erosion and Sediment Control Manual, WSDOT:
https://www.wsdot.wa.gov/publications/manuals/fulltext/M3109/TESCM.pdf
Description:
Mason Conservation District is requesting bids from qualified parties to help restore river, wetland, and floodplain habitat on the Skokomish River in Mason County, Washington. The project includes the construction of 21 large woody material (LWM) structures (10 of which are pile supported) in the Skokomish River. Specifically, this includes 1 Mid-Channel Jam, 3 Bar Roughening Jams, 11 Bank Jam units (each unit is approximately forty-five (45) feet in length, creating 5 Bank Jam structures in total) and 6 Deflector Jams. The project will also create and improve of 0.6 miles of new floodplain side channels that includes the construction of 13 Wood Habitat Structures (Side Channel Type A and Type B Jams) within said side channels, the decommissioning of an the existing recreational parking area and creation of a new elevated recreational parking area in the upland area, demolition and removal of an existing vault toilet from the floodplain and installation of a new prefabricated single vault toilet in the new upland parking area, and improvement of an established access route to the river from the new parking area.
A total of approximately 209 large and medium logs (some with rootwads still attached), 55 timber piles, 355 racking logs, 12 pinning logs, and 436 cubic yards of slash material will need to be harvested or procured by the contractor and delivered to the project site for the construction of 21 large wood structures in the main stem and 13 smaller habitat structures in the side channels. Approximately 6,560 cubic yards of material will be excavated to construct or enhance 0.6 miles of new or enhanced flood plain side channels. Suitable soil material from side channel excavation is the designated borrow source for the proposed parking lot embankment and any roadway subgrade fill. It’s estimated that 1,250 cubic yards of subgrade fill material will be required for the parking lot embankment and roadway subgrade fill. Excavated side channel material that is not utilized on-site as fill (approximately 5,310 cubic yards) shall be properly disposed of off-site by the Contractor.
The construction of the LWM structures will occur at or below the ordinary high-water mark (OHWM) and must be completed within the permitted in-water work window defined by the Washington Department of Fish and Wildlife’s (WDFW) project Hydraulic Project Approval (HPA) permit. Work at or below the OHWM must occur between July 15, 2026, and September 15, 2026. All Work must be substantially complete by September 30, 2026. This is a public works contract requiring payment of prevailing wages in accordance with Washington State laws.