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United Technologies Corporation / Pratt & Whitney Cleanup Site Palm Beach County, Florida March ... - page 2 / 2

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EPA and DEP have determined that human health exposures and groundwater contamination migration at the facility are under adequate control. The facility was evaluated in 1988 by a state health department formerly known as Health and Rehabilitative Services to address potential exposure issues. In the 22 years since then, all of the potential concerns regarding exposure to contaminants have been investigated and addressed. EPA issued a document in September 2000 which reviewed available information on known and reasonably suspected releases to soil, groundwater, surface water/sediments, and air to establish there are no unacceptable human exposures to contamination that can be reasonably expected under current land and groundwater-use conditions. From Pratt & Whitney’s latest RCRA permit, listed below are the constituents monitored as part of the cleanup process, including the groundwater Cleanup Target Levels (CTL) for these parameters. Not all of these constituents are present at each of the 47 hazardous waste sites at the facility.

Constituent of Concern

CTL

(µg/L)

Benzene

1

Chlorobenzene

100

Chloroethane

12

1,1-Dichloroethane

70

1,1-Dichloroethene

7

1,2-Dichloroethane

3

cis-1,2-Dichloroethene

70

trans-1,2-Dichloroethene

100

1,1,1-Trichloroethane

200

Tetrachloroethene

3

Trichloroethene

3

Vinyl Chloride

1

1,4-Dioxane

3.2

PCB

0.5

Arsenic

10

Barium

2,000

Cadmium

5

Chromium

100

Lead

15

Mercury

2

Nickel

100

Selenium

50

Silver

100

Total Cyanide

200

While there has been increased interest in the cleanup of contamination at this site in Palm Beach County, DEP does not see any direct relationship between this site and The Acreage which is over five miles away.

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