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Little Pond monitoring shows large declines in groundwater nitrate after sewering; inlet export still elevated
Summary
Multi‑year monitoring in Little Pond shows groundwater nitrate concentrations have fallen by about two‑thirds since sewering, and automated inlet sampling indicates ebbing water exports higher nitrogen concentrations than flood tides; presenter provided mass‑balance exports as evidence of progress and remaining legacy loads.
A multi‑year monitoring program for Little Pond presented to the Water Quality Management Committee showed significant declines in groundwater nitrate concentrations since sewering, but also demonstrated that the inlet still exports nitrogen‑enriched water during ebb tides.
The presenter (committee member identified by first name 'Ken') summarized groundwater‑well profiles…
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