Great Lakes Water Authority Logo
Share to Facebook Share to Twitter Bookmark and Share
File #: 2021-426    Version: 1 Name:
Type: Resolution Status: Passed
File created: 11/2/2021 In control: Board of Directors Workshop Meeting
On agenda: 11/18/2021 Final action: 11/18/2021
Title: Contract No. 1904231 Northeast Water Treatment Plant Flocculator Replacement CIP# 112006 / BCE Score: 67.40
Sponsors: Cheryl Porter, Grant Gartrell
Indexes: Water Operations
Attachments: 1. 1904231 Procurement Report, 2. 1904231 Cost Tabulation - Notice of Respondents


Contract No. 1904231

Northeast Water Treatment Plant Flocculator Replacement

CIP# 112006 / BCE Score: 67.40


Agenda of:                     November 18, 2021

Item No.:                     2021-426

Amount:                     $12,699,000.00


TO:                                          The Honorable

                                          Board of Directors

                                          Great Lakes Water Authority


FROM:                     Suzanne R. Coffey, P.E.

                                          Interim Chief Executive Officer

                                          Great Lakes Water Authority


DATE:                     November 3, 2021


RE:                                          Contract No. 1904231

                                          Northeast Water Treatment Plant Flocculator Replacement

                                          Vendor:  Commercial Contracting Corporation




Upon recommendation of Cheryl Porter, Chief Operating Officer - Water and Field Services, the Board of Directors (Board) of the Great Lakes Water Authority (GLWA), authorizes the Interim Chief Executive Officer (ICEO) to enter into Contract No. 1904231 “Northeast Water Treatment Plant Flocculator Replacement” with Commercial Contracting Corporation, at a cost not to exceed $12,699,000.00 for a duration of 1,879 days; and authorizes the ICEO to take such other action as may be necessary to accomplish the intent of this vote. 


Contract No. 1904231 is a construction contract that involves the replacement of the flocculation system at the Northeast Water Treatment Plant (Northeast WTP). The Northeast WTP was constructed in 1956 and has a state-rated capacity of 190 million gallons per day (mgd). The existing flocculators are original to the plant, are no longer functional, and are beyond repair. Flocculation is an integral part of the major pretreatment processes, including coagulation, flocculation and sedimentation. The flocculation process allows the coagulated suspended solids to agglomerate into larger, settable particle masses that can then be effectively removed in the sedimentation basins. Without adequate flocculation, like at the Northeast WTP, a substantial amount of suspended solids and colloids will not settle and instead are loaded onto the downstream filters, which reduces filter runtime, efficiency and effectiveness. More important, the chances are greater that colloids (i.e., microscopic particles) will break through the filters when flocculation is inadequate. This is a concern because colloidal matter can harbor pathogens by physical attachment, and some pathogens (e.g., Cryptosporidium parvum) are resistant to chlorine disinfection and therefore their removal through the flocculation, sedimentation and filtration processes is important to safeguard water quality. Complete treatment as defined in Rule 103(j) of the Michigan Safe Drinking Water Act, Public Act 399, as amended (Act 399), is a series of treatment processes that include coagulation, flocculation, sedimentation, filtration, and disinfection. Therefore, the Northeast WTP is not equipped to provide complete treatment as defined in Michigan’s Act 399 due to the inoperability of flocculation at the plant. The Michigan Department of Environment, Great Lakes, and Energy (EGLE) noted in its 2021 sanitary survey of the Northeast WTP that the lack of flocculation at the plant represents a non-compliance with Act 399 requirements. EGLE stated in the 2021 sanitary survey for the Northeast WTP that it will consider this non-compliance outstanding until new flocculators are installed and placed into service.


Construction of the new flocculation system at the Northeast WTP under this proposed Contract No. 1904231 is essential to provide drinking water of unquestionable quality. Flocculation is a major unit operation in the conventional water treatment process to assure that harmful microorganisms are satisfactorily removed from drinking water. Moreover, the State of Michigan’s regulatory agency (EGLE) that has primacy for drinking water regulations in the State of Michigan has indicated that the condition of the flocculation system at Northeast WTP is not compliant with Act 399 Safe Drinking Water requirements. Therefore, implementation of this project will reduce risks associated with waterborne disease outbreaks, correct a regulatory non-compliance, and adhere to the values of GLWA.


Summary: Sufficient funds are provided in the financial plan for this project.

Funding Source: Water Construction Fund

Cost Center: Water Engineering

Expense Type: Construction (5519-882111.000-616900-112006)

Estimated Cost by Year and Related Estimating Variance:  See table below.

Fiscal Year

FY 2022 Planned Spend                                                                                                 $2,500,000.00

FY 2023 Planned Spend                                                                                                   3,000,000.00

FY 2024 Planned Spend                                                                                                   3,000,000.00

FY 2025 Planned Spend                                                                                                   2,500,000.00


Financial Plan Estimate                                                                                               $11,000,000.00

Proposed Contract Award                                                                                                 12,699,000.00

Negative Estimating Variance                                                                            ($1,699,000.00)

This negative estimating variance will be funded from Capital Reserves.


This item was presented to the Operations and Resources Committee at its meeting on November 10, 2021. The Operations and Resources Committee unanimously recommended that the GLWA Board adopt the resolution as presented.


This item does not impact the shared services agreement between GLWA and DWSD.