S&L Underground is requesting sub bids and material quotes from all qualified subcontractors and suppliers including MBE, WBE, SBE and DBE for the following:

City of Columbia Falls, MT - WWTP Improvements

Bid Date: April 9, 2024

Bid Time: 2:00 pm

Plans are available at: HDR Engineering office

Project description:

1. Expansion of the existing bioreactor from a 3-stage A2O process to a 5-stage Bardenpho process. Work includes the addition of a post-anoxic zone, a post-aerobic zone, and associated equipment.

2. Furnishing a supplemental carbon unit.

3. Mixed liquor recycle (MLR) piping improvements.

4. Provide new redundant high speed aeration blower.

5. Provide new redundant sludge thickening equipment which includes construction of a new building with thickening room, chemical room, and electrical room. Work also includes a new equipment platform, HVAC systems, replacement of existing WAS pumps and installation of new VFDs, and associated structural, mechanical, electrical and instrumentation necessary to create a complete and workable system.

6. Pretreatment Building improvements including expansion of existing building, installation of new redundant mechanical fine screen with screenings  washer/compactor, HVAC improvements, and other miscellaneous electrical, controls, building, piping and valve improvements.

7. Provide new sewage receiving station.

Areas of work: concrete, masonry, metal fabrication, doors/hardware, coatings, signage, plumbing, HVAC, electrical, piping and appurtenances, valves, etc.

Please verify your intent to provide a quotation to admin@slunder.com and respond by April 8, 2024 with your proposals. 

Thank you for your time and consideration.