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County reports hydrogen sulfide levels below DEC standard near Monroe sewer corridor; mitigation ongoing
Summary
Weekly hydrogen sulfide monitoring around Monroe pump stations and manholes shows ambient readings well below the DEC standard of 0.01 parts per million; county staff said they continue manhole sealing, vent maintenance and coordination with municipal pump‑station treatments to reduce odors and corrosion.
At the Aug. 19 advisory committee meeting, county operations staff reported hydrogen sulfide (H2S) monitoring in the Monroe pump‑station corridor and said weekly ambient and fugitive‑gas readings remain well below the New York State Department of Environmental Conservation (DEC) standard of 0.01 parts per million (ppm) averaged over sampling periods.
The update is significant to residents because hydrogen sulfide is both an unpleasant‑odors source and — at higher sustained concentrations — a corrosive gas that can damage sewer infrastructure.
Robert Gray (referred to in the meeting as "Bob"), a county operations official, described the monitoring program…
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