Congressional District # 13
COPLEY SQUARE PLAZAEPA ID# OH0000563122
Last Updated: December, 2012
The Copley Square Plaza Superfund site is located in Copley Township, Summit County, Ohio. The site first came to the attention of the Ohio Environmental Protection Agency (Ohio EPA) when there were complaints of an odor in water from wells serving two businesses in the Copley Square Shopping Center - a dry cleaners and a grocery store.
Ohio EPA found that the groundwater contained volatile organic compounds (VOCs) at levels higher than what Ohio EPA considers to be safe. Investigations at the dry cleaners revealed that chemicals used for dry cleaning, the same VOCs found in the groundwater, were being disposed/stored in eight wastewater tanks in the back room of the dry cleaner. Testing showed that the eight wastewater tanks were leaking the VOCs into the groundwater under the building.
After four years of extensive testing in the 1990s, Ohio EPA asked for assistance from the U.S. Environmental Protection Agency (EPA) to protect local residents from the contaminated groundwater and to remove the source, the eight wastewater tanks at the dry cleaners.
EPA conducted extensive testing of nearby homes, installed water treatment systems in seven nearby homes that had contaminated wells, closed the eight wastewater tanks at the dry cleaners and installed a system to treat the ground water. After the in-home treatment systems were in place and tested to ensure their effectiveness at removing the volatile organic compounds, EPA turned over the maintanence of the in-home treatment systems to Ohio EPA. Ohio EPA continued to maintain the systems until fall 2012 when 23 homes were connected to public water supply.
In 2000, EPA reviewed site conditions at the request of Ohio EPA and found that the ground water was still contaminated and that there had been no improvement since the mid-1990s. EPA placed the site on the National Priorities List (NPL) in April 2005.
The Copley Square Plaza site is being addressed through federal and state actions.
Threats and Contaminants
Soil and groundwater were contaminated with tetrachloroethylene (PCE or PERC), a volatile organic compound, and its derivatives including trichloroethylene (TCE), cis-1,2-dichloroethylene (cis-DCE), trans-1,2-dichloroethylene (trans-DCE), and vinyl chloride (VC). Seven homes were provided with water treatment systems in the mid-1990s to address contaminated wells. A few years later, one home decided to connect to public water instead of having the filtration system. Ohio EPA had been maintaining the systems since their installation. In October 2012, the remaining six homes with filtration systems, as well as 17 other homes, received connection to public water (total of 23 homes).
A passive ground water collection system was installed to collect ground water leaving the eastern side of the dry cleaner facility and water treatment systems were installed in homes with contaminated wells during the mid-1990s. Ohio EPA has been maintaining the water treatment systems since their installation, until the October 2012 connection of those homes to public water.
EPA conducted a Remedial Investigation and Feasibility Study (RI/FS) between 2006 and 2009. Site soil, both under and east of the former dry cleaners, remains contaminated with PCE and its breakdown compounds. Shallow groundwater is also contaminated, though contamination extends east into the undeveloped area between the former dry cleaners and the townhome development. Deep groundwater contamination extends approximately one-quarter mile southeast of the former dry cleaner. EPA also conducted indoor air sampling, which revealed PCE and its breakdown compounds in a number of single family homes and townhomes.
In October 2009, EPA issued a Record of Decision that outlined the final cleanup remedy to address contamination in soil and shallow groundwater. The remedy includes a combination of connecting affected residences to public water, installing vapor intrusion mitigation systems in affected residences, and soil and shallow groundwater treatment.
In January and February of 2011, EPA collected indoor-air air samples to determine which residences require vapor mitigation systems in their basements. From April through June 2011, EPA collected tap water samples to determine which residences merited connection to public water. EPA then finalized the designs for the public water connection and vapor intrustion mitigation systems. EPA also determined the best method of injection to address the shallow groundwater and soils near the former dry cleaners.
Additional investigative work for deep groundwater began in April 2011. EPA installed new intermediate and deep monitoring wells in February-May 2012, and will collect quarterly samples until the end of 2013. EPA will use that data to issue a second Record of Decision to address contamination in the intermediate and deep groundwater aquifers.
In August 2012, seven homes were provided with sub-slab depressurization systems to prevent dry cleaning chemicals in gas form from entering homes through the basement floor (vapor intrusion).
From September through November 2012, EPA connected 23 homes to public water supply, abandoned all 23 private drinking water wells, and performed road, right-of-way, and yard restoration to bring the site back to its original condition.
EPA held a public meeting on its proposed cleanup plan on July 22, 2009, and received numerous comments on the Proposed Plan.
EPA went door-to-door in 2011 during the early portion of the vapor and tap water sampling events and was able to assist with the collection of samples.
In preparation for installation of vapor intrusion mitigation systems, EPA did a walk-through of residents' basements in April 2012.
In August 2012, EPA made phone calls to answer questions related to vapor intrusion mitigation systems and public water connection.
ContactsRemedial Project Manager, U.S. EPA
margaret gielniewski (email@example.com)
AliasesDANTON DRY CLEANERS