CITY COUNCIL AGENDA ITEM
ACTION REQUESTED:
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Approve the award of Bid 21-017, 2021 Sanitary Sewer Manhole Rehabilitation, to Spectra Tech, LLC for an amount not to exceed $182,680, plus a 5% contingency
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DEPARTMENT: Water Utilities
SUBMITTED BY: Darrell Blenniss, Director
BOARD/COMMISSION REVIEW:
N/A
BACKGROUND:
The Sanitary Sewer Manhole Rehabilitation program began in 2000. The program is part of the following requirements:
• Illinois Environmental Protection Agency (IEPA) required Capacity, Management, Operations and Maintenance (CMOM) plan
• Ten-year Infiltration and Inflow Reduction Program under Naperville’s National Pollutant Discharge Elimination System (NPDES) permit IL0034061
Naperville's proactive approach to combating infiltration and inflow (I&I) into the sanitary sewer system yielded positive results. Since 1998, the population of Naperville increased by roughly 30,000 people or about 20%. However, the average amount of water treated at the Springbrook Water Reclamation Center decreased by roughly 18% <https://data.naperville.il.us/City-Services/Springbrook-Water-Reclamation-Center-Average-Daily/ykaz-gn83> over the same period.
The Water Utilities issued Bid 21-017 seeking a contractor to rehabilitate 50 existing sanitary sewer manholes, most of which are old brick or concrete block manholes. The bid specifications require installation of a non-cementitious coating to all interior surfaces including channel, bench, barrel, cone and chimney sections of the manhole. Over the past 20 years, the specified coating product has withstood winter freeze-thaw cycles without cracking. The no-dig process creates a manhole liner that seals out stormwater induced infiltration and ground water inflow. The majority of manholes included in the bid are located in the downtown and college areas.
DISCUSSION:
Advertisement Date: 6/07/2021 Notices Sent: 92
Bid Opening Date: 6/22/2021 Plan holders: 15
Bids Received: 3
Bids were received from the following vendors:
|
VENDOR NAME |
PROPOSED COST |
|
Spectra Tech LLC |
$182,680.00 |
|
Engineer’s Estimate |
$195,550.00 |
|
Michels Corporation |
$218,857.75 |
|
KIM Construction Company |
$323,430.00 |
Staff believes the bid is reasonable for performing the work as specified. Water Utilities tested the products used by Spectra Tech, LLC and found them to be a capable contractor.
FISCAL IMPACT:
CIP: WW006
Manhole rehabilitations are expensed to the infrastructure account listed below as part of the capital improvement program. A total of $5,930,000 is budgeted for sanitary sewer system rehabilitations in 2021. The requested award is within budget.
|
Account Number |
Fund Description |
Total Budget Amount |
|
41251500-551502 |
Water Utilities |
$26,743,950 |
Per Council directive, contingency on construction projects is set at 3% on projects over $500,000 and 5% on projects under $500,000.