FY2023 Adopted Budget

PUBLIC WORKS

Department

V3167

Project #

Tim Wilkey

Contact

Project Name Replace Grit Classifiers

One Phase

Type

20 years

Useful Life

GRANTEE NONE

PLAN None

Wastewater Treatment

Category

MATCH % NONE

TIF DISTRICT None

Essential (2)

Priority

Description Replace the Grit Classifiers located in the Grit Building including any required piping and bunker modifications. Project includes installing a bagging system and roll-off to move away from having to install a liming system to meet IDNR grit disposal requirements. This cost includes the 2 roll-off containers. Justification The grit classifiers were installed in 2002 and have requiried a major frame repair in 2015 and multiple rotating parts replacment over the past 5 years. The equipment is at the end of it's useful design life. IDNR rules require raising the grit pH to 12 for 2 hours, by installing a bagging system and roll-off, we can apply for a waiver for liming and the roll-off will reduce staff handling the grit. With improvements in technology, the new classifiers are more effective at dewatering and will produce a drier grit. Total Project Cost: $394,000 Status Active

Expenditures

Total

2022

2023

2024

2025

2026

PLANNING/DESIGN

30,000

30,000

CONSTRUCTION

325,000

325,000

INSPECTION

6,000

6,000

ADMINISTRATION

3,000

3,000

CONTINGENCY

30,000

30,000

394,000

394,000

Total

Funding Sources

Total

2022

2023

2024

2025

2026

WASTEWATER FUND

394,000

394,000

394,000

394,000

Total

Budget Impact/Other Grit removal is critical in WWTP operations in meeting its NPDES permit and reduces wear and tear on down steam pumping. Scheduled replacement is is more cost ffective than an emergency replacement project. This project repairs existing equipment which should reduce maintenance and repairs costs. The estimated impact on the operating budget is less than $10,000.

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