Update: After January 6, 2017, information about this RCRA Corrective Action site
will be available at:
Corrective Action Sites Around the Nation - Region 3
(Search for the Facility by Name, Location, or EPA ID)
Please be sure to update your bookmarks.
On This Page
EPA Project Manager
Mr. Griff Miller
U.S. Environmental Protection Agency - Region III
1650 Arch Street
Mail code: 3LC30
Philadelphia, PA 19103-2029
The final decision of Complete without Controls became effective October 2, 2012 after a 30-day public comment period. No further action is required to make the Knoll property suitable for any type of land use.
An Environmental Indicator (EI) Inspection was performed at the Knoll facility in September 2007. This inspection summarized several prior investigations including the preliminary assessment of 1989, several underground storage tank (UST) investigations and closures in the 1990s, and an incinerator dismantling/removal in 2002. The EI inspection identified several potential areas of concern, mostly associated with past UST closures and their impact to soil and groundwater in the area. Upon further investigation that included a site visit in June 2012, adequate remediation appears to have been performed. The monitoring well network adequately covered the UST areas and revealed little to no impact from previous UST activities. EPA determined that both EIs were met at the facility in July 2012.
The Knoll facility is situated on 99 acres of land located in Upper Hanover Township, Montgomery County, Pennsylvania. The facility was built in 1964 and has produced office furniture, partitions, fixtures, and office systems throughout its history to the present. The facility comprises three separate buildings: the Fabrication building (original main facility), the Schlosser Warehouse building (completed in 1985), and the Lubin Assembly building (completed in 1986). The Fabrication building, as the main facility building and the location of any hazardous waste generation or handling, is the primary focus for RCRA Corrective Action purposes.
Primary contaminants at the facility include volatile organic chemicals associated with petroleum hydrocarbons from previous UST use, and solvents and metals associated with painting operations; however, after the remediation of the USTs, little evidence of any contamination remains at the facility.
- Some of the site’s key documents of interest are accessible below:
- Corrective Action Final Decision & Response to Comments[2 pp, 100 KB, about pdf]
- Environmental Indicator Determination - Human Exposures [ 7 pp, 123 KB, About PDF]
- Environmental Indicator Determination - Groundwater Migration [8 pp, 184 KB, about pdf]
- Corrective Action Statement of Basis [ 10 pp, 666 KB, about pdf]
- Documents and reports regarding this facility also can be reviewed in person at these locations:
U.S. EPA Region III
Land & Chemicals Division
1650 Arch Street-11th Floor
Philadelphia, PA 19103
Call for an appointment.
- Submit a FOIA Request
Get instructions on how to submit a FOIA request. Additional fee for requests over 100 pages.
Click on a thumbnail to enlarge the photo)
Knoll continues to use the facility to produce office systems and furniture.