Committee recommends inflow-and-infiltration study and approves Well No.1 rehab

The committee recommended two near-term utility actions: rehabilitating an underused village well and contracting a targeted inflow-and-infiltration (INI) study to locate sources of high wastewater flow.

Staff explained Well No. 1 (Kennedy Park area) was underutilized and had elevated manganese and iron; the committee approved hiring Municipal Well & Pump to rehabilitate Well No. 1 for a packet price of $27,460.

On sanitary sewer flows, packet figures presented to the committee showed monthly totals of roughly 30 million gallons in December, 32 million in January, 29 million in February and a jump to about 43 million gallons in March. Staff said the March increase likely reflects inflow and infiltration from aging infrastructure in the older part of the village and stressed the cost impact: March flow-related charges in the packet were substantially higher than February.

To better target repairs, staff proposed an initial Inpipe study using smart sensors to narrow the search area before committing extensive televising resources. Committee members pressed to remove a liability cap in the vendor's draft contract and to require a certificate of insurance; the motion approving the proposal included those contract adjustments and was recommended to the village board for final approval (packet listed a study total of $10,000). Committee members noted that smart-sensor monitoring requires dry-weather baselines and then analysis over one or more rain events to identify rain-derived inflow.

Next steps: the committee recommended the Inpipe proposal with adjusted liability language, will forward the rehabilitation contract for Well No. 1 for execution, and instructed staff to pursue targeted INI monitoring and, subsequently, repair projects (such as spot lining or manhole rehabilitation) where the study identifies problems.