What is Schlage Lock Company doing about the problem?
• Perchloroethylene was used by the facility from 1977 to 1992. Releases of this chemical resulted in it moving down through the soils to the ground water below. Once in the ground water, it moved slowly following the path of the aquifer ultimately to the Willow Springs Ponds area (approximately 3.5 miles). • Clean up of the Schlage Lock Company property is important because removal of the source area stops the continued movement of perchloroethylene away from the property. – Soil Vapor Extraction – a technology used to remove perchloroethylene from the soil above the ground water by drawing air through the soil, pulling the perchloroethylene vapors from the soil. – Air Sparging – a technology used to enhance removal of perchloroethylene from ground water by blowing air through the ground water causing the perchloroethylene to volatilize into the soil above the groundwater where it can be removed through soil vapor extraction. – In-well Sparging and Stripping systems – this technology
