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Board and applicant debate septic load and IA systems; plans show 9,900 gallons per day
Summary
Discussion focused on septic design and nitrogen removal: the applicant confirmed the plans reflect 9,900 gallons per day under Title 5 calculations and said the selected IA (nitro) system meets the board of health threshold (10 mg/L); the team agreed to investigate upsizing or alternative systems to approach lower effluent concentrations and report back on Aug. 27.
Board members pressed the applicant on wastewater and nitrogen loading, citing town mandates to reduce nitrogen to estuaries. The applicant corrected a slip of the tongue and confirmed, "it does show 9,900 gallons per day on our calculation," acknowledging the Title 5 basis for the design and explaining that the chosen nitro IA system is one they use in town and meets the board of health' 10 mg/L standard.
Board members noted problems with long‑term maintenance of IA systems in other projects and asked whether a larger system or another approved alternative could achieve lower effluent concentrations (3–5 mg/L). The applicant said they will review the options, try to determine whether upsizing or alternate approved systems could reach lower averages and return with a yes/no answer and justification at the Aug. 27 continuation.
