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Board approves expanded MS4 storm-sewer mapping after EPA audit
Summary
The Norton Board of Control approved a $37,900 contract with GPD Group for expanded MS4 storm-sewer location mapping to collect inverts, catch-basin locations and pipe sizes after an EPA audit found the city lacked mapping. The work is expected to be completed by July 1 and will inform future stormwater studies and the comprehensive plan.
The Norton Board of Control voted 4-0 to award a contract to GPD Group not to exceed $37,900 for MS4 storm-sewer location mapping designed to gather pipe sizes, catch-basin locations and invert elevations.
The mapping follows an Environmental Protection Agency audit in December 2023 that found Norton deficient in its MS4 (Municipal Separate Storm Sewer System) mapping. Mr. Binsley, the presenter, told the board the original plan addressed only mapping sufficient to meet the EPA paperwork requirement; the expanded scope adds “dipping” of catch basins to record invert elevations and pipe diameters so the city can run targeted stormwater studies.
Board members discussed timing and budget placement. Mr. Binsley said the work has an estimated completion date of July 1 and that the team can prioritize specific neighborhoods for earlier study if the board wants to move quickly. A board member noted the mapping information could be incorporated into Norton’s comprehensive plan. The motion to approve the GPD Group contract passed 4 to 0; one member (Marzida) was recorded as excused.
Why it matters: The expanded mapping will provide infrastructure-level data (pipe sizes and invert depths) that the city and consultants can use to model flows and identify mitigation projects for flooding complaints. The contract increases the original three‑year, $27,000 approach because it collects field-level measurements the earlier proposal did not include.
The board did not adopt any ordinance or change regulatory authority with the vote; the action was a procurement authorization to acquire mapping services. The city indicated the work will come from stormwater budget lines (a board member asked whether the stormwater fund would pay for the study). No vote on additional capital projects or mitigation measures was taken at the meeting.
The board also noted an existing tabled item unrelated to the mapping that remains on hold and will be considered at a later date.
