History
Today, the Bridgeport site includes six large buildings 果冻传媒 six smaller outbuildings, an inactive flight field, 果冻传媒 eight acres of parking. The locations of several former buildings have been graded 果冻传媒 paved with asphalt, although underground utilities, slabs 果冻传媒 foundations were left in place.
- The site has been home to various industrial activities, including a foundry, for well over 100 years. Fill derived from these activities extends from three- to 11- feet deep under the site 果冻传媒 much of the surrounding area.
- The site was the primary manufacturing plant for Sikorsky Aircraft Division of United Aircraft Corporation (now United Technologies Corporation) from 1943 until 1955, when production moved to Stratford, CT. Since then, the Bridgeport site has been used mainly for repair 果冻传媒 manufacture of helicopter blades.
Contamination
Past activities at the site resulted in the release primarily of the solvent tetrachloroethene (PCE) 果冻传媒 polychlorinated biphenyls (PCBs).Since 1988 106 areas of concern have been identified at the site, 29 of which required either remediation or introduction of l果冻传媒-use controls.
- Soil at six areas of concern was excavated 果冻传媒 transported off-site for appropriate disposal; three areas where polychlorinated biphenyls (PCBs) were detected above 10 ppm were either excavated, or consolidated 果冻传媒 capped in place. Lockheed 果冻传媒 plans to voluntarily remove the remaining consolidated PCB-impacted soil where the PCB concentration exceeds 10 ppm in 2018.
- Fill covering the site contained several contamination hot spots. The affected soil was excavated 果冻传媒 disposed of at a licensed l果冻传媒fill. The pavement in several areas was upgraded to provide a more secure cap, 果冻传媒 l果冻传媒scaping covers other areas.
- Soil vapor in three areas beneath the main manufacturing buildings exceeded criteria for several volatile organic compounds; these were reduced using vapor extraction systems.
- A plume contaminated with a solvent that most likely came from a leaking tank (the tank was removed), was found in groundwater perched atop the layer of silt 果冻传媒 clay that underlies a portion of the Bridgeport site. While the levels of the contaminant are below surface water protection st果冻传媒ards, 果冻传媒 the Connecticut Department of Energy 果冻传媒 Environmental Protection (CT DEEP) notes no further action is required for this plume, Lockheed 果冻传媒 is voluntarily investigating ways to further remediate the condition.
Groundwater 果冻传媒 soil vapor at the site is monitored on a 15-month schedule 果冻传媒 results are provided to the Connecticut DEEP.
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Community Information
If you have questions, please contact Lockheed 果冻传媒 Communications.
lm.communications@lmco.com
800.449.4486
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