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Newton Street renovation and septic replacement continued after staff questions

Southborough Conservation Commission · June 26, 2026
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Summary

An applicant seeking a garage with ADU and a septic replacement at 14 Newton Street presented revised plans showing about 2,090 sq ft of new impervious surface with mitigation; the commission continued the hearing pending a DEP file number and clarifications on landscaping and drainage.

Engineer Vito presented the 14 Newton Street proposal to the commission, describing a 3‑car garage with an accessory dwelling unit intended for a parent, and a septic replacement that must be sited within overlapping 100‑foot buffers to a wetland and a street drain. He said the plan increases impervious area by about 2,090 square feet and proposes to infiltrate roof runoff to a dry well sized to the one‑inch standard for the roof area.

"We have about 2,090 square feet of new impervious," Vito said, and explained that parts of the work will remain in existing lawn and that driveway adjustments reduced the total impervious area from earlier plans.

Staff noted historic yard debris near the wetland edge that should be removed and asked for clarification about a foundation drain and proposed landscaping alterations. The commission said it could not act without a DEP file number and continued the hearing to allow the applicant to submit the outstanding material and for staff to review the revised plans.

Commissioners indicated the mitigation approach — directing roof runoff to a dry well and limiting disturbance to lawn areas — was acceptable in principle but asked for clearer drawings and a complete set of revised documents before final action.