Richard Desrosiers, PG, LEP
Vice President
Mr. Desrosiers is a Licensed Environmental Professional in Connecticut and a licensed Professional Geologist in New Hampshire and Tennessee. In 33-years of environmental practice, he has focused on understanding complex geologic, hydrogeologic and geochemistry associated with soil and groundwater contamination. His experience includes the assessment and remediation of metals and volatile organic compounds, RCRA/CERCLA hazardous waste investigations/closures; developing in-situ innovative technologies to remediate groundwater contamination, developing high yielding groundwater supplies in both the surficial and deep bedrock aquifers, and completion of hydrogeologic evaluations and groundwater models. He has also provided depositions, bench and jury expert testimony regarding litigation issues. Mr. Desrosiers is currently involved with two Interstate Technology & Regulatory Council (ITRC) teams “Optimization of In-Situ Remediation and Injection Strategies” and “Per- and Polyfluoroalkyl Substances (PFAS)” and was an active member on the recently published “Characterization and Remediation in Fractured Bedrock” document.
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Insights & Resources from Richard
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PFAS Sampling as Part of Connecticut Wastewater Permitting
The state of Connecticut has made several changes to wastewater testing in 2025.
Read more: PFAS Sampling as Part of Connecticut Wastewater Permitting -
Petitions to Review Filed for Federal PFAS Drinking Water Maximum Contaminant Levels
On April 10th, the US EPA announced its final National Primary Drinking Water Regulation (NPDWR) for six PFAS compounds. The regulation established Maximum Contaminant…
Read more: Petitions to Review Filed for Federal PFAS Drinking Water Maximum Contaminant Levels -
US EPA to Designate Perfluorooctanoic Acid (PFOA) and Perfluorooctanesulfonic Acid (PFOS) CERCLA Hazardous Substances
On April 19th, 2024, the US Environmental Protection Agency (EPA) announced in a press release that it will designate PFOS and PFOA, two per-…
Read more: US EPA to Designate Perfluorooctanoic Acid (PFOA) and Perfluorooctanesulfonic Acid (PFOS) CERCLA Hazardous Substances