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Greystone Lane addition approved with 2:1 riverfront mitigation after redevelopment exceeded 10% threshold
Summary
Consultant testimony showed the Greystone Lane project exceeded the 10% riverfront redevelopment threshold by 1,357 sq ft, triggering a required 2,714 sq ft mitigation area; the Commission approved the Order with conditions to place shrubs and signage outside the drainage easement and to maintain a meadow by annual fall mowing.
The Commission closed and approved the Notice of Intent for work at 170 Greystone Lane after consultants confirmed the proposal exceeded the local 10% riverfront redevelopment threshold.
Matthew Marro of Matthew Marro Environmental Consulting calculated the lot’s riverfront area at 52,466 square feet and identified 6,604 square feet of existing degraded area. The proposed redevelopment exceeded the 10% threshold by 1,357 square feet, which triggers a 2:1 mitigation ratio; Marro said that requires 2,714 square feet of plantings. He described a mitigation plan that includes shrub plantings positioned to avoid a drainage easement, signage marking the restoration area, and annual fall mowing to maintain meadow conditions.
Paul Campbell of Chess Engineering confirmed the drainage pipes lie approximately 7–8 feet below the surface and said plantings and posts would be sited around the easement so they would not interfere with drainage infrastructure. Coordinator Lori Capone recommended recording signage and shrub placement in a special condition that requires locating both at the edge of the drainage easement and outside of it to reduce the risk that future DPW maintenance would disturb woody plantings.
The Commission voted unanimously to close the hearing and issue the Order of Conditions requiring the specified mitigation, placement of signs outside the drainage easement, and conditions to manage invasive-species risk during grading and planting.
