Dworshak Powerhouse Roof Replacement

2026-11-03

Dworshak Powerhouse Roof ReplacementSources Sought Notice : W912EF26RSS05The US Army Corps of Engineers , Walla Walla District is seeking interested business sources for a construction project entitled : Dworshak Dam Powerhouse Roof Replacement . The work is located at Dworshak Dam in Ahsahka , Idaho , along the Clearwater River north fork near Orofino , ID . This will be a firm - fixed - price construction contract . The projected magnitude of construction for this project is between $ 5 , 000 , 000 and $ 10 , 000 , 000 . 100 % performance and payment bonds will be required . The expected period of performance will be approximately 300 days in duration for the removal and installation of roofing over the powerhouse ( roof A ), engineering office ( roof B ), elevator and stair penthouse ( roof C ), and circuit breaker gallery and entry ( roofs D & E ) at Dworshak Dam . The government expects to award a contract in January 2027 , with an approximate on - site installation work window of May 2027 through November 2027 . The North American Industry Classification System ( NAICS ) code for this project is 238160 – Roofing Contractors and the associated small business size standard is $ 19 . 0 million . This sources sought notice is a tool to identify businesses with the capability to accomplish the work . This is not a solicitation . Responses to this sources sought notice should include the following information : A list of no more than five ( 5 ), project examples that were completed in the last 10 years which demonstrate experience in removing and installation roofing material as listed in the Summary Scope of Work . If any of the experience is that of a subcontractor , please specify that information in your response . For each project submitted , provide a brief narrative statement of the work involved , how it relates to the described herein and your firm ’ s role in the project , the dollar value , and the completion date . Include a statement detailing any special qualifications and certifications , applicable to the scope of this project , held by your firm and / or in - house personnel . Provide a statement of your firm ’ s business size status ( HUBZone , Service Disabled Veteran Owned , 8 ( a ), small disadvantaged , or woman - owned ) with regards to the NAICS code listed above . Provide the percentage of work you ( as the prime ) intend to perform . If you intend to subcontract a major portion of the work ( defined as at least 20 % of the work ), please include this information in your response . Provide a statement that your firm intends to submit an offer on the project when it is advertised . Provide a statement of your firm ’ s bonding capacity . A statement from your surety is NOT required . CAGE Code and UEI number . This sources sought notice is for market research and planning purposes only and is not to be construed as a commitment by the Government to pay for information submitted in response to this request . Respondents will not be notified of the results of the market analysis and debriefings will not be available . It is the reader ' s responsibility to monitor the Government Point of Entry ( GPE ) via sam . gov . Contract Opportunities for any resultant or future solicitation package ( s ) that may be issued . Submit this information to Preston Jones , Contract Specialist , via email to Preston . E . Jones @ usace . army . mil and Jani Long , Contracting Officer , at Jani . C . Long @ usace . army . mil . Your response to this notice must be received on or before 3 : 00 PM PST on January 7 , 2026 . Summary of Scope of Work : Dworshak DamThe powerhouse construction was completed in 1975 and includes five low - sloped roof areas totaling approximately 26 , 200 square feet . The existing single - ply membrane is a 50 - mil reinforced acrylonitrile butadiene rubber ( NBD ) membrane installed over rigid insulation board and vapor retarder . Two roof areas have concrete roof deck , and three roof areas have metal roof deck . The structural integrity of the metal decks appeared sound by visual inspection while walking on the roof and examination from below . Two roof areas have high voltage electrical equipment that requires all work in those areas to be completed within a predetermined outage period . Additionally , one roof area has a portion of the roof that has microwave telecommunication equipment that requires all work in that area to be completed within two contractor coordinated outage periods . The scope of the work is to provide a durable waterproofing system for the Dworshak powerhouse and ancillary roofs . This will be achieved by removing the existing roofing system in its entirety down to the structural roof decks , followed by the installation of a new fully adhered roofing assembly to include gypsum roof sheathing , a vapor retarder , polyisocyanurate foam roof insulation , cover board , and 90 - mil EPDM membrane . A 2 - year installer warranty and a 30 - year manufacturer warranty are required . Fall protection guardrails constructed from fiber - reinforced plastic ( FRP ) will be installed to the parapet walls of the powerhouse and elevator penthouse roofs to ensure a safe work environment for maintenance personnel conducting preventative maintenance activities on the roofs . Fabricated metal stairs will be installed to replace existing ladder access to two roof areas . The mechanical air conditioning unit for the elevator machine room will be replaced with a new split heat pump system with indoor air handler and outdoor condenser unit . Roof parapet heights above the parking lot / roadway range from 36 feet high to 75 feet high . Cranes and / or telescopic boom lifts will be necessary to deliver material on to the roof surfaces . High voltage equipment and overhead transmission lines will limit placement and reach of equipment . Demolished materials may be removed using cranes , telescopic boom lifts , or debris chutes . All on - site work shall be performed in accordance with the Corps of Engineers Safety and Health Requirements Manual ( EM 385 - 1 - 1 ). Establish and manage an effective on - site Safety and Health program in accordance with EM 385 - 1 - 1 that will require the development and submission of a comprehensive project specific Accident Prevention Plan for Government acceptance . In addition , develop and submit for Government acceptance Activity Hazard Analyses for each phase of work and a project specific Fall Protection Plan that comply with EM 385 - 1 - 1 . A Site Safety and Health Officer ( SSHO ) employed by the prime contractor is required for each shift of the contractor ' s on - site operations . The SSHO shall possess a minimum of 5 - years ’ experience in construction safety on similar projects , shall have completed the 30 - Hour OSHA Construction Safety training within the last 5 years , and shall have completed at least 24 hours of safety training from accredited safety training sources each year for the past 5 years . Establish and manage an effective Contractor Quality Control ( CQC ) System that will require the development and submission of a comprehensive project specific CQC Plan for Government acceptance . A CQC System Manager employed by the prime contractor is required to be on - site for each shift of the Contractor ' s operations . The CQC System Manager must possess a minimum of 5 years relevant experience in a supervisory or management position such as Quality Control Manager , Quality Assurance Manager , or Construction Manager directly involved in the management of construction quality at the project site . In addition , the CQC System Manager shall have completed the course entitled “ Construction Quality Management for Contractors ” within the last 5 years . Use the Government - furnished Resident Management System ( RMS ) – Contractor Mode to record , maintain , and submit various information throughout the contract period . RMS is a Windows - based program capable of operating on a stand - alone personal computer or on a network . The Government will make the quality control system ( QCS ) software available to the Contractor at time of notice to proceed . The project involves the development and management of Contractor furnished submittals for items such as pre - construction plans , product data , test reports , and contract close - out documentation as required by the technical specifications of the contract . Miscellaneous work within the project includes the delivery of As - Built Drawings , O & M Manuals , Contractor - Prepared Shop Drawings , and spare parts to the customer . Contracting Office Address : Attn : CECT - NWW / 201 North 3rd Avenue / Walla Walla , Washington 99362 - 1876Place of Performance : USACE – Dworshak Dam , Ahsahka , Idaho

Idaho

2026-05-11