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Commission approves order of conditions for Brockton VA stormwater improvements with conditions
Summary
After peer review, the commission approved an order of conditions for stormwater upgrades at the Brockton VA (940 Belmont St.), adding four special conditions including dewatering approvals, staging perimeter controls, a draft SWPPP, and a drainage manhole detail; the commission also required phased preconstruction checks and conservation-marker language.
The Brockton Conservation Commission voted April 15 to issue an order of conditions for stormwater-improvement work at the Brockton VA (940 Belmont Street), after peer review and consultant recommendations.
Beta consultant Elise Trip summarized a design that replaces degraded pavement and installs vegetated treatment measures and subsurface systems to reduce direct discharge into adjacent wetlands. Beta recommended four special conditions: (1) notify the conservation agent before any dewatering and obtain agent approval of methods and locations; (2) require perimeter erosion controls around any stockpile or staging areas within buffer zones; (3) submit a draft Stormwater Pollution Prevention Plan (SWPPP) for the commission or agent to review before construction; and (4) add a construction detail for drainage manhole 59A in the plan set and submit that detail prior to construction.
The commission voted to close the hearing and adopt those recommended special conditions, and added language requiring phased preconstruction meetings tied to the SWPPP so the commission or its agent can inspect erosion controls before each major phase begins. The commission also reserved the right to require conservation markers if needed during phased work.
Agent Kyle said the SWPPP must be a living document with weekly inspection records and additional measures installed during construction when weather or site conditions warrant. "The SWIP is a living document that gets modified as they go through the process of doing the construction and they're required to modify the erosion control plan as they go to show what they're doing and document that," he told the commission.
What's next: The applicant will submit the drainage-manhole detail and draft SWPPP for the commission’s agent; phased preconstruction inspections will be scheduled before major work begins.
