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For an unknown period of years ending in 1977, residents using public water in the Village of East Farmingdale were exposed to trichloroethane and trichloroethene in their drinking water. The public health implications of this past exposure are discussed in the public health assessment prepared in 1993 (NYS DOH, 1993).

The 1995 health consultation recommended that the NYS DOH review the remedial design workplan for the groundwater treatment system for a worker and community heath and safety plan and provide recommendations as needed. The NYS DOH reviewed the workplan and noted that details such as a hospital route map and list of emergency contacts, necessary for a site-specific health and safety plan were not included. Prior to beginning work on the groundwater treatment system, a site specific health and safety plan will be completed by the consultant and reviewed by the NYS DOH, as recommended in the 1995 Health Consultation. Construction of the groundwater treatment system is expected to be completed by the end of 1998.

The OU2 ROD provides for long-term monitoring of groundwater to evaluate the effectiveness of the remedy and to determine if site-related contaminants are migrating toward the Gazza Boulevard public drinking water supply well. The public drinking water supply wells are monitored for site-related compounds on a quarterly basis by the East Farmingdale water district and annually by the Suffolk County Department of Heath Services to ensure that NYS DOH public drinking water standards are met. Although di-n-butyl phthalate, a plasticizer, was detected on one occasion in East Farmingdale Gazza Boulevard supply well S-20042 at 95 ug/L, this chemical was also detected in the associated and was not detected when the well was resampled by the NYS DOH in January 1994. Based on this information, the presence of this compound in the original sample was likely due to laboratory contamination.

In the summer of 1995, an extensive geoprobe study was performed to further delineate on-site VOCs and SVOCs in subsurface soils. The study showed that no VOCs or SVOCs were present at levels high enough to warrant OU4, the soil vapor extraction portion of the soil remedy outlined in the ROD.

The previous health consultation recommended that the demolition of the abandoned Circuitron building proceed in a timely manner. Demolition of the abandoned Circuitron building, as well as removal of underground holding tanks and catch basins and excavation of contaminated soil and sediment around these tanks, was completed and the site regraded in January 1997. These actions eliminated any physical hazards posed by the deteriorated condition of the building and removed the risk of contact with contaminated soils, sediments and residual contamination within the building.

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