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Farmingdale Plaza Cleaners Site

Site No: 130107

Operable Unit 1
Town of Oyster Bay, NY
Fact Sheet - February 2012
Interim Remedial Measure System Startup at State Superfund Site

As part of an Interim Remedial Measure (IRM), the New York State Department of Environmental Conservation (NYSDEC) has installed a system to treat contaminated soil vapor and groundwater at the Farmingdale Plaza Cleaners site ("site"), located at 480 Main Street in the Incorporated Village of Farmingdale, Nassau County, New York. The installation included soil vapor extraction (SVE) wells, vacuum monitoring points and piping to prepare for the start-up and operation of a SVE treatment system. Treatment system startup occurred in November 2011.

NYSDEC has developed a Final Construction Completion Report (PDF) (34 Pages, 2 MB). The report summarizes the installation and start-up of the SVE system and provides documentation that the site preparation, well installation, monitoring point installation, trenching, pipe installation, system construction, connection and system start-up activities associated with the remediation were performed in substantial conformance with the Design Specifications, Contract Documents, New York State Department of Environmental Conservation (NYSDEC) guidelines, and accepted standards of practice. The report was was also made public in February 2012 at the locations identified below under "Where to Find Information."

The site is listed as a Class "2" site in the State Registry of Inactive Hazardous Waste Sites (list of State Superfund sites). A Class 2 site represents a significant threat to public health or the environment; action is required.

Highlights of the Site Remediation

An IRM is a discrete set of planned actions for both emergency and non-emergency situations that can be conducted without the extensive investigation and evaluation of a Remedial Investigation/Feasibility Study (RI/FS). Because of their versatility and the relative speed with which they are applied, IRMs accelerate remedial projects. The sooner sites are remediated, the sooner the public and the environment are protected. An IRM is planned for this site to address a source of soil vapor and groundwater contamination at the former Farmingdale Plaza Dry Cleaners. This IRM is being performed by the NYSDEC under the NYS Superfund Program.

The remedial construction and operation scope of work is available for public review at the locations identified below under "Where to Find Information."

The on-site remediation has the following goals:

  1. Reduce the volatile organic compounds (VOC) concentrations in the subsurface soil vapors.
  2. Prevent soil vapor intrusion from impacting the indoor air quality in the buildings in the shopping plaza and adjacent properties.
  3. Reduce VOC concentrations in unsaturated site soils and groundwater.

The contaminant of concern for this site is tetrachloroethene or perchloroethene (PCE), which is a common dry cleaning solvent. Investigations performed at the site showed that the on-site groundwater and soil vapors have been impacted, and PCE contaminated groundwater is migrating to the south. People are not drinking the contaminated groundwater because the area is served by a public water supply not affected by this contamination. The potential for soil vapor intrusion is currently being investigated by the NYSDEC.

A SVE treatment system extracts vapor from the subsurface using a vacuum blower. Contamination in the extracted vapor is then removed by passing the vapor through activated carbon. The effectiveness of the SVE system is measured by monitoring concentration in the extracted vapor and also in monitoring points installed below the ground in the treatment area. The SVE system has two extraction wells and four vapor monitoring points, but will have the ability to extract vapor from up to three extraction wells, should the need arise. Vapor monitoring points have also been installed within the plaza and in/adjacent to the surrounding apartments and a commercial building. Figure 2 provides the expected zone of influence of the IRM SVE treatment system.

State Superfund Program: New York State Superfund Program (SSF) identifies and characterizes suspected inactive hazardous waste disposal sites. Sites that pose a significant threat to public health and the environment go through a process of investigation, evaluation, cleanup and monitoring.

NYSDEC generally attempts to identify parties responsible for site contamination and require cleanup before committing State funds.

More information about the SSF.

The SVE well, vacuum monitoring points, and associated piping have been installed in and outside of the Former Farmingdale Plaza Cleaners building. A fenced area is set up in the southern portion of the site where the SVE treatment system enclosure will be placed. The following activities have occurred to date:

  • Delivery of the prefabricated SVE system to the site in September 2011;
  • Connection of SVE piping and electrical service to the treatment system;
  • Began operation of the treatment system in November 2011; and
  • Monitoring of the treatment system regularly for a minimum of six months as per the operation and monitoring (O&M) plan.

Next Steps

The information collected during O&M and sampling will be summarized in reports and will be used to adjust the system, determine the effectiveness and of the remediation, and to determine the length of treatment system operation. The NYSDEC will keep the public informed throughout the duration of the IRM at the site.


The site is comprised of the former Farmingdale Dry Cleaner tenant space located within a one-story masonry structure of approximately 33,000 square feet situated on a 4 acre commercial parcel. Known contamination includes PCE and its associated breakdown products. On-site investigations were conducted in 2004 and 2007. A separate off-site remedial investigation was initiated in 2009 and continues.

For more information

Where to Find Information

Project documents are available at the following location to help the public stay informed.

Farmingdale Public Library
116 Merritts Road
Farmingdale New York 11735
Phone: (516) 249-9090
For Library Hours Go To:

Who to Contact

Comments and questions are always welcome and should be directed as follows:

SVE IRM Project Related Questions
Mr. David Chiusano
New York State Department of Environmental Conservation
625 Broadway, 12th Floor
Albany NY 12233-7017
Phone: (518) 402-9814

Site-Related Health Questions
Ms. Sharon P. McLelland
New York State Department of Health
Bureau of Environmental Exposure Investigation, Room 300
547 River Street
Troy NY 12180-2216

Offsite Investigation Related Questions
Mr. Chek Ng, P.E.
New York State Department of Environmental Conservation
625 Broadway, 11th Floor
Albany NY 12233-7015
Phone: (518) 402-9620

Citizen Participation Specialists
Bill Fonda/Aphrodite Montalvo
New York State Department of
Environmental Conservation Region 1
50 Circle Road
Stony Brook, NY 11790
Phone: (631) 444-0350

For additional general information on the soil cleanup technology that is being used at this site, please visit the United States Environmental Protection Agency's website to view "A Citizen's Guide to Soil Vapor Extraction and Air Sparging" - See link at the upper right of this page.