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CITY OF WEST CHICAGO

                        INFRASTRUCTURE COMMITTEE
                         AGENDA ITEM SUMMARY
ITEM TITLE:
                                              AGENDA ITEM NUMBER:
Rejection of all Bids and Re-bid - Headworks Influent Gate
                                                 COMMITTEE AGENDA DATE: February 3, 2022Replacement Project at West Chicago/Winfield                                                   COUNCIL AGENDA DATE: February 7, 2022
Wastewater Authority Regional Wastewater Treatment
Plant

STAFF REVIEW: Mehul Patel, P.E., CFM, Director of Public Works    SIGNATURE tyl_U                            t5  -
APPROVED BY CITY ADMINISTRATOR: Michael L. Guttman
                                                   SIGNATURE ________ _

ITEM SUMMARY:

The City of West Chicago and the Village of Winfield jointly comprise the West Chicago/Winfield
Wastewater Authority (WCWWA), which owns the Wastewater Treatment Plant (WWTP), which
discharges to the West Branch of the DuPage River under NP DES Permit No. IL0023469. The WWTP
receives and processes over five million (5,000,000) gallons of raw sewage daily from the both
municipalities. The flow enters the WWTP at two locations. The flow from City of West Chicago enters
the WWTP through a 36-inch gravity Interceptor at the headworks while the flow from Village of Winfield
enters the WWTP through a 20-inch forcemain into the grit chamber,

The two influent gates that control the gravity flow into the headworks lift station and the bypass flow to
the excess flow clarifiers are currently inoperable. In September 2021 , the WCWWA hired Clark Dietz,
Inc. an engineering firm , to provide design services for the replacement of the two influent gates. Their
scope of work included replacement of the two influent gates, one downward opening weir gate and one
upward opening sluice gate; replace the motor operators and stands for the gates; specification for
bypass pumping during the project; structural upgrades to the chambers including corrosion protection;
grating and fall protection hatch upgrade, etc.

The Project was advertised for bids in the Daily Herald as well as on QuestCDN (an online bidding
platform) on January 6, 2022. A mandatory onsite pre-bid was conducted on January 13, 2022. Bids
were received on January 27, 2022 for the project. Of the four (4) plan holders that attended the
mandatory pre-bid meeting, only two (2) contractors submitted a bid. A summary of the results is
included below:

                                              ---
         Contractor              - Base Bid T Alternii~Total Base Bid-     Rank
                                                      Amount
       Boller Construction       $494,700.00      $24,200.00       $494,700.00          1                                                  I
     Martam Construction       $918,365.00      $50,792.00       $918,365.00          2                                                     !
      Engineers' Estimate       $245,000.00                                               $25,000.00    I   $270,000.00         N/A                                   I

The project is budgeted for in the Capital Improvements for the WCWWA at $210,000.00. After reviewinQ

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CITY OF WEST CHICAGO
the bids,  it appears the bypass pumping was the single biggest factor between the estimate and
contractor bids. In an attempt to complete the project within the FY2022 budget cycle, staff intends to re-
bid the project after clearly defining the bypass pumping component of the project and possibly combine
the project with another project at WCWWA to make it enticing for other bidders.

ACTIONS PROPOSED:

Reject all Bids and Re-bid - Headworks Influent Gate Replacement Project at West Chicago/Winfield
Wastewater Authority Regional Wastewater Treatment Plant


COMMITTEE RECOMMENDATION: