(AGENPARL) – ven 17 gennaio 2025 Issued: Jan 17, 2025 (2:11pm EST)
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EPA Updates Cleanup Plan for Groundwater Pollution in Hewlett, NY
Hewlett, N.Y.  (Jan 17, 2025) – The U.S. Environmental Protection Agency has
updated its 2017 cleanup plan for the Peninsula Boulevard Groundwater Plume
Superfund Site in Hewlett, New York, to address more extensive contamination
in the area. The updated plan reflects the results of recent sampling, which
show that groundwater contamination at the site is more extensive than
originally expected.
“This updated cleanup approach addresses the full scope of contamination to
protect the health of the Hewlett community,” said Acting EPA Regional
Administrator Alyssa Arcaya. “EPA is committed to engaging with local
residents and businesses to ensure they are informed and supported throughout
this process.”
The Peninsula Boulevard Groundwater Plume site is contaminated with volatile
organic compounds (VOCs) such as tetrachloroethylene (PCE) and
trichloroethylene (TCE) from historic dry-cleaning operations. This
contamination affects groundwater in the Village of Hewlett and the Town of
Hempstead, however the New York American Water Company treats the drinking
water and provides clean, safe drinking water to the residences in the area.
In 2011, the EPA finalized a plan to address groundwater contamination.
However, further investigations revealed that source material beneath several
properties needed to be addressed first. A 2017 cleanup plan targeted
addressing this source material, but more recent sampling has uncovered
contamination that is more extensive than originally identified.
To address the broader scope of contamination, the EPA’s updated plan
includes the following:
In-Place Thermal Treatment: Heating contaminated soil and groundwater at the
Cedarwood Cleaners property and nearby parcels, including sections of West
Broadway and Hewlett Parkway, to break down harmful chemicals.
Groundwater Recirculation System: Pumping out groundwater, removing
contaminants through treatment, and returning clean water to the aquifer.
Air Monitoring: The EPA will monitor air quality to ensure the safety of
residents and businesses during these cleanup activities. This includes
testing for harmful vapors that may seep into buildings and installing systems
to prevent them from entering affected properties, if necessary.
Cedarwood Cleaners, identified as a primary contamination source, will be
demolished to allow for effective cleanup of contamination under it. During
the public information session held on January 16, EPA informed the community
about the modified cleanup plans, and outlined additional sampling and
investigations scheduled for this winter. While the design process is expected
to take two to three years to complete, EPA is committed to working closely
with local businesses and property owners to minimize disruptions and will
continue to provide regular updates.
Additional background and site documents will be available at the Peninsula
Boulevard Groundwater Plume Superfund Site profile page.