HomeMy WebLinkAboutItem 05 - Wastwater Treatment Plant MEMOTO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: BRUNO RUMBELOW, CITY MANAGER
MEETING DATE: FEBRUARY 2, 2021
SUBJECT: APPROVAL OF CONTRACTS FOR WASTEWATER TREATMENT
PLANT DEWATERING IMPROVEMENT AND AN APPROPRIATION
ORDINANCE
RECOMMENDATION: City Council to consider approving a contract for dewatering
improvements at the Wastewater Treatment Plant with Red River
Construction, approving a construction phase services contract with
Garver LLC, and an ordinance to appropriate the funds.
FUNDING SOURCE: Funds are available in the Utility Enterprise Capital Fund 201 in an
estimated amount of$2,617,700.
BACKGROUND: On November 7, 2017, City Council authorized an engineering services
agreement with Garver LLC, to design a new dewatering system.
Dewatering is accomplished my mechanically pressing water away from
the solids at the end of the treatment process. This is necessary to meet
municipal landfilling requirements. After 25 years in service, the current
dewatering equipment is past its useful life and must be replaced.
During the design, it was concluded that the best solution was the
installation of two identical screw presses with one press serving as a
backup. Since the proposed screw press system is enclosed, staff expects
to see a significant reduction in odor associated with the plant.
A Request for Competitive Sealed Proposals was advertised to consider
not only the bid price (75% of weight), but also bidder's qualifications
(10%), construction experience (10%), safety record/litigation history
(2.5%) and project closeout (2.5%).
Bids were opened on January 7, 2021 and the following bids received:
Contractor Bid Amount Score
Red River Construction $2,357,700 96.0
Felix Construction $2,660,535 91.5
Schofield Civil Construction $2,766,535 81.9
Alltech Engineering Corp. $3,114,872 77.8
Red River Construction received the highest score.Additionally, staff has
had recent experience with Red River Construction at the Water Plant,
and as such, recommends this firm for award of contract.
Staff has also included $260,000, or 11 %, in construction related cost
[5% construction contingency, 4% inspection, and 2% materials testing
(rounded to $260,000)]. This brings the total construction phase
appropriation to $2,617,700. The contractor has 270 calendar days to
complete the project after the Notice to Proceed is issued.
Garver LLC., the design engineer, has provided a contract for construction
phase services in the estimated amount of $40,000. This will come from
the 4% inspection contingency.
Staff recommends approval.