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Board approves nitro-enhanced septic system for 12 Nycoma Way with conditions
Summary
The Eastham Board of Health conditionally approved raising and rebuilding a 2-bedroom cottage at 12 Nycoma Way with a nitro enhanced-IA septic system (11 mg/L provisional nitrogen limit), a 2-bedroom deed restriction, monitoring and recorded deed conditions, and approval valid through 07/30/2027.
The Eastham Board of Health voted to approve a raise-and-rebuild project at 12 Nycoma Way that includes an innovative 'nitro' enhanced IA septic system and a series of conditions aimed at ensuring long-term monitoring and nitrogen control. Laura of Schofield Brothers described the plan and its constraints, saying the new house would connect to municipal water and install "a 1,500 gallon septic tank followed by a nitro system," sized for a three-bedroom leaching area though the dwelling will remain two bedrooms.
Laura described the technology to the board: "This IA has an 11 milligram per liter standard of removal," she said, explaining that the system uses an aerated first compartment and wood-chip media in a second compartment to biologically strip nitrogen. Board members asked about maintenance; Laura said the wood chips typically require replacement every 25–30 years and that an operation and maintenance agreement would be required.
Staff noted the nitro technology is in a provisional approval status with the state and advised the board that it can conditionally approve the system but should consult the state during permitting. The chair moved to approve the project with conditions including a 2-bedroom deed restriction recorded at the Barnstable County Registry of Deeds, correction of design calculations to 220 gallons per day on the installation permit, an operation and maintenance contract for the system's life, monitoring and reporting per DEP provisional-use conditions (11 mg/L total nitrogen), final inspections witnessed by the Eastham Health Department, and board approval valid until 07/30/2027. The motion was seconded and approved by voice vote.
Why it matters: The approved system is intended to provide stronger nitrogen removal in a coastal watershed, and the board attached monitoring, deed-recording and operational requirements to maintain oversight and data reporting.
