Board approves septic variances for two properties, delays decision on Ampitron system pending paperwork and public notice

The Falmouth Board of Health took three formal actions Thursday on septic-system matters: it approved an IA denitrifying system for 46 Fox Lane, approved variances and a local upgrade for 9 Cricket Lane (Woods Hole) with conditions, and continued action on a proposed Ampitron Plus system for 85 Brick Hill Road until the board can advertise and treat the item as a local-variance hearing.

46 Fox Lane: Applicant Tim Santos (Merrill Engineers) said the proposal would replace the existing system with a denitrifying IA system sized for up to six bedrooms. After confirming there were no local variances required and that the property is not in a state Zone 2, the board approved the system “with the standard set of conditions and an effluent limit of 10 milligrams per liter or less.”

85 Brick Hill Road (Ampitron Plus): Developers seeking to serve 40 units (62 bedrooms) presented an Ampitron Plus denitrification design. Board members and operators debated field performance data: some historical installations did not meet the 10 mg/L target, while vendors said the Ampitron Plus with supplemental carbon dosing and alkalinity feed is designed to meet that threshold. Members raised operator availability and startup/performance concerns and voted to continue the item, advertise it as a variance from local regulation and return with state-listing documentation and monitoring assurances before final approval.

9 Cricket Lane (Woods Hole): Engineer Scott Machali presented a local upgrade request for an existing 2‑bedroom home on a compact, filled lot with a coastal bank crossing the property. The plan requested reduced setbacks and other local relief. The board discussed buoyancy, deep excavation, deed restrictions and drain proximity and approved the variances and local upgrade with the standard conditions, a deed restriction limiting occupancy to two bedrooms, added buoyancy calculations on plans, and a requirement that excavation/installation avoid loading an adjacent drain.

Monitoring and enforcement: In a related, extended discussion, board members reviewed sampling data that showed many IA systems historically failed to meet targets. The board agreed on a phased compliance approach: first meet with operators to identify performance or maintenance issues, then send progressively stronger letters to owners (templates to be drafted), require resampling and remediation plans if systems remain out of compliance, and — as a last resort — pursue enforcement measures including fines or denial of occupancy.

Next steps: The Ampitron Plus application was continued to a future hearing advertised as a local variance. The 46 Fox Lane and 9 Cricket Lane approvals were recorded with standard conditions and additional plan requirements. The board asked staff to prepare draft letters to operators and owners and to map Zone 2 systems for prioritized outreach.