Town of Charlton approves changes to stormwater rules to ease some single‑home permits

At a meeting of a Town of Charlton commission, members voted to amend the town's stormwater rules to add a definition for "common plan of development," attach design and construction standards to the minor land‑disturbance application, and adopt a new application checklist and criteria intended to let some single‑family home projects pursue a minor rather than a major permit.

The changes are intended to clarify which residential projects must seek the full (major) stormwater permit and to give staff a clear checklist for approving minor permits without an external peer review. "A common plan of development is defined as a larger common plan of development or sale is a contiguous area where multiple or separate activities may take place at different times, in different locations, and on different schedules under one plan," the presenting staff member said while describing the text to be added to the regulations.

Why it matters: Under current wording, a single‑home build on a lot that is part of an older subdivision or an aggregate development plan can trigger major‑permit requirements if the remaining disturbance on the original plan exceeds one acre. The commission adopted two criteria that, if met, allow a house on a lot in an earlier plan to proceed under the minor permit: (1) there has been a clearly identifiable period of at least three years with no ongoing construction on the original plan, and (2) no more than one acre (approximately 43,000 square feet) of disturbance remains on the original common plan.

Details and approvals - Definition: Commissioners voted to add the definition of "common plan of development" to the definitions section of the Town of Charlton Stormwater Rules and Regulations.

- Attachment A (design and construction standards): The commission approved adding Attachment A — design and construction standards already present elsewhere in the regulations for major disturbances — to the minor land‑disturbance application so applicants know required practices for smaller projects.

- Permit title and cross‑references: The commission agreed to add the phrase "land disturbance / stormwater and erosion control permit" in places where the regulations previously referenced only "stormwater and erosion control permit" to make clear that the town's permit is the land‑disturbance permit.

- Criteria for minor permit on lots in an older plan: The commission approved the two criteria described above so that in certain cases a single‑family home on a lot inside an older common plan can qualify for the minor permit instead of being required to apply for a major stormwater permit.

- Minor permit application checklist and peer‑review waiver: The commission adopted a checklist to be attached to the minor permit application (sections 3.4 and 3.5 of the stormwater rules). The checklist requires, among other items, owner signatures, a filing fee (stated in the discussion as $100 for a single‑family home), a narrative describing conformance with Attachment A, plans drawn to scale showing existing and proposed drainage infrastructure and structural best management practices, and a stamped certification that the proposed disturbance is less than one acre. If the checklist is fully met, staff will review the minor permit without sending it to external peer review, relieving applicants of a peer‑review fee.

- Setbacks and operation/maintenance requirements: The checklist references setbacks for infiltration structures that were cited from state/EPA language: 100 feet from wells, 50 feet downgradient from leach fields, 10 feet from building foundations, and 10 feet from property lines. The operation and maintenance plan must document maintenance tasks and schedules; staff cited examples discussed in the meeting: remove sediment from swales every six months and perform an annual inspection of infiltration systems.

Questions and context Commissioners and attendees raised questions during the discussion about monitoring and deed recording. The presenting staff member said maintenance responsibility lies with the property owner, comparing it to ownership responsibilities for a private pool; enforcement would typically follow from complaints or observed problems rather than proactive inspections. When asked whether setback distances (for example, 100 feet from wells) could be changed, staff replied that those distances come from state or EPA language and were not proposed for revision in this agenda item.

Votes and next steps The record shows a series of motions to add the definition, attach Attachment A to the minor application, change permit titles, adopt the minor‑permit criteria, adopt the checklist, and incorporate the new language into the regulations; each motion was seconded and the chair recorded "the ayes have it." Exact roll‑call tallies were not specified on the record. Staff said it will implement the checklist and bring any needed revisions back to the commission if the new process is found to be abused or problematic.

The commission adjourned after completing the agenda items.