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About OER

OER is the New York City Mayor’s Office of Environmental Remediation. We are a team of scientists and engineers that design and operate municipal programs to promote cleanup and redevelopment of vacant contaminated land in NYC. OER operates over 30 programs and central among these is the New York City Voluntary Cleanup Program (VCP), the nation’s only municipally-run land cleanup program.


Since 2014, OER has completed environmental remediation and enabled redevelopment of over 400 properties on roughly 110 acres of land in NYC. These cleanups meet the most rigorous New York State environmental quality standards and this work ensures that these redeveloped properties are among the safest places in NYC to live and work. In doing so, OER eliminates potential public health impacts from exposure to environmental pollutants and improves the safety of NYC communities.


OER operates programs to engage communities and encourage revitalization of vacant land in our city. OER also provides environmental counsel to city agencies and serves other important environmental functions in the city government. For instance, after Hurricane Sandy, OER designed the landmark program for recycling of 200,000 cubic yards of sand that was washed ashore, saving taxpayers over $80 million in sand transport and disposal costs and enabling construction of a beachfront flood protection levee that now protects Atlantic coastal communities from future storms.
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