RFP - Aeration Blower Replacement.pdf

Request for Proposals City of Edgerton

Wastewater Treatment Facility Aeration Blower Replacement Installation and New Aeration Piping Installation

12 Albion Street Edgerton, WI 53534

June 2025

Project Description:

The City of Edgerton is planning to replace one existing aeration blower at the Wastewater Treatment Facility. There are currently three rotary positive displacement (PD) blowers, each rated at a design flow rate of 700 SCFM at 11 psig, 60 HP.

The OWNER has chosen to replace one rotary PD blowers (Blower No. 1), refer to the attached drawings from the 2017 installation). The City is purchasing one rotary lobe hybrid blower by Aerzen (Model D25S) to replace Blower No. 1. The proposal that the City accepted is attached which includes the scope of work provided by Aerzen. Shop drawing information for the Aerzen blower is also available for review.

Cedar Corporation conditionally approved these shop drawings recently and this approval is also available. The concrete pad for the blower also needs to be widened to accommodate the Aerzen blower.

The OWNER also needs to replace approximately 120 LF of 10” diameter CL 52 DI below grade air piping with 10” 304 SS schedule 10 above grade piping that extends from the service building (Str. 30) to the aeration basin (Str. 40). All bolts for the SS piping upgrade to be 304 SS and gaskets to be Viton. The above grade piping also needs to be supported at a height of 8’ above grade once outside of Str. 20 and to the aeration basin. The new opening at the building is to be repaired, caulk sealed and insulated.

Drawings for this upgrade are attached with the RFP.

The ENGINEER for this project is Cedar Corporation, Attention: Dave Sauer, P.E., 2820 Walton Commons West, Suite 142, Madison, WI 53718, Email: dave.sauer@cedarcorp.com.

Work Scope:

BIDDER to provide a cost proposal based on the following requirements:

1. Specific mechanical installation of the one new Aerzen aeration blower (Model D256) in the current location of Blower #1 along with required aeration piping for air intake and for discharge to the aeration basins within Str. 30, service building.

2. Removal of existing aeration Blower #1 along with the necessary aeration piping to accommodate the installation of the one Aerzen aeration blower and piping identified in item 1 above.

3. Assuming an October 31, 2025, delivery of the Aerzen blower to the Edgerton WWTF, provide a schedule for starting and completing the installation work scope.

4. Reference list for similar aeration blower installations over the last five years. Reference list to include contact names and phone numbers for those familiar with the completed work scope.

5. Repair/sealing of penetrations for the removed blower air intake(s) for Blower #1.

6. Coordinate with the OWNER during the entire blower installation process to help minimize any interruptions in the on-going operations of the WWTF.

7. Lump sum cost proposal is requested along with identification of work scope items. Any work scope items not included shall be identified as well along with a list of labor hourly rates if additional work is selected by the OWNER during the time when the contractor is on site.

OWNER Provided Services:

1. OWNER to secure electrical contractor work scope using local electrical contractor, Hady Electric, who has completed several projects at the WWTF.

2. OWNER to secure Altronex to complete the required SCADA/control work scope for the project.

3. OWNER to provide WWTF access and coordinate with the contractor to help minimize the impact on the current ongoing operations at the WWTF.

4. OWNER’s representative for this project is Dave Sauer, P.E., Cedar Corporation, 608-358-7140 (mobile), 608-237-5831 (office).

OWNER Provided Information:

1. Edgerton WWTF existing drawings related to the blowers and air piping work scope.

2. Edgerton WWTF photos of existing aeration blower mechanicals (Str. 30).

3. Concrete pad modification details drawing with reinforcing bar layout.

4. Shop Drawing approval with partial shop drawing submittal.

Schedule:

The City of Edgerton Sewer Utility is requesting sealed bid proposals by 4:00 P.M., local time, August 7, 2025, for the above-mentioned project at the City’s Wastewater Treatment Facility (WWTF). The sealed bid proposals are to be sent to Cedar Corporation, attention Dave Sauer, P.E., 2820 Walton Commons West, Suite 142, Madison, WI, 53718, email: dave.sauer@cedarcorp.com.

Additional Information:

The bid proposals shall be accompanied by a certified check payable to the City of Edgerton equal to five percent (5%) of the proposal or a bid bond of a bonding company authorized to do business in the State of Wisconsin in an amount equal to five percent (5%) of the proposal. Proposals shall not be withdrawn for a period of 30 days after the date of opening. The City of Edgerton reserves the right to reject any and all of the proposals and to waive any informalities therein.

I:\Clients-Madsn\E\E4894 Edgerton City of\082 WWTF Operations Help\8100 bidding\RFP - June 2025\RFP for Aeration Blowers Replacement Installation.docx

Edgerton WWTF Blower No. 1

Edgerton WWTF Blower No. 1