EPA RCRA ID: PAD061779815
On this page:
- Cleanup Status
- Facility Description
- Contaminants at this Facility
- Institutional/Engineer Controls
- Enforcement and Compliance
- Related Information
- Contacts for this Facility
Cleanup Status
Note: The EPA is the lead agency for managing cleanups at this facility.
On June 21, 1999, EPA determined that contamination in groundwater and human exposures risk from contaminants were under control.
In September 2012, the United States Environmental Protection Agency (EPA) issued a Final Decision which EPA selected a Final Remedy to remediate groundwater and subsurface soil contamination. The Final Remedy consisted of groundwater monitoring and remediation and soil vapor extraction (SVE) to remediated volatile organic compounds (VOCs), primarily 1,1-Dichloroethane; 1,1-Dichloroethene; cis-1,2-Dichloroethene; Tetrachloroethene; 1,1,1-Trichloroethane; Trichloroethylene (TCE), and Vinyl Chloride in groundwater and subsurface soil. Institution controls were implemented through an environmental covenant that prohibits on-site groundwater use and restricts the Facility property to non-residential use.
After almost 25 years of active remediation, VOC concentrations in subsurface soil and groundwater have reduced significantly. From 2001 to 2016, 493 pounds (lbs) of VOCs were recovered by the SVE system, and 2,436 lbs were recovered from groundwater for a total of 2,929 lbs of recovered VOCs. Despite several attempts to optimize and upgrade both systems’ performance, mass removal rates substantially declined by 90% by 2011, and VOCs reached asymptotic levels in subsurface soil and groundwater in 2013. Therefore, active treatment is no longer an effective means to remediate subsurface soil and groundwater.
In 2016 and with EPA’s approval, Univar deactivated the SVE and groundwater extraction systems to evaluate the groundwater contamination under static conditions. Univar conducted ten quarters of groundwater monitoring and surface water sampling in Montour Run, located downgradient of the Facility. The groundwater data indicate that residual VOC soil contamination that remains in the subsurface soil does not pose a significant impact to groundwater. Under groundwater static conditions the groundwater plume has remained stable and/or declining and has not migrated off-Facility. Furthermore, statistical trend analysis of the groundwater data demonstrates that the VOC concentrations in groundwater will continue to decrease through natural attenuation. Surface water results confirmed that Montour Run is not impacted by the Facility groundwater contamination. On-site groundwater use at the Facility is prohibited. In addition, there are no off-Facility groundwater wells located within a mile radius of the Facility. A local ordinance also prevents the installation of new domestic groundwater wells, and any new development in North Fayette Township is required to be connected to a public water system. Therefore, there are no direct exposure pathways to the Facility groundwater contamination.
In 2020, Univar conducted a risk assessment to evaluate the exposure risks for indoor air vapor intrusion associated with the Facility groundwater contamination. Five sub-slab soil gas samples and co-located indoor air samples were collected throughout the warehouse. TCE was detected in two of five sub-slab soil gas samples at concentrations of 39 and 279 micrograms per cubic meter (μg/m3), which exceed the conservative target Vapor Intrusion Screening Level (VISL) of 29 micrograms per cubic meter (μg/m3). The samples are located at the edge of the warehouse closest to the historical impact areas and furthest from the occupied office spaces. No other compounds were detected above screening levels in the sub-slab soil vapor. The co-located indoor air samples for TCE were below the EPA Target Indoor Air Concentration of 0.876 ug/m3 and the Pennsylvania Act 2 Target Indoor Air Concentration of 8.8 mg/m3. The presence of TCE in indoor air indicates there may be a complete indoor air pathway associated with groundwater impacts, but at this time, the levels detected do not pose an unacceptable risk to human health. To ensure minimal impact from TCE vapor intrusion in the future, periodic inspections, and maintenance of the concrete slab inside the warehouse are necessary. Any cracks that appear over time in the concrete slab should be repaired and filled.
Because the VOC levels in groundwater and subsurface soils have reached asymptotic levels despite the operation of the remediation systems and there are minimum exposure risks to groundwater and subsurface soil contamination, in 2022 EPA issued an Explanation of Significant Differences (ESD) to the 2012 Final Decision that modifies the Final Remedy. The modifications to the Final Remedy replaced active groundwater and subsurface soil remediation with groundwater monitored natural attenuation and required periodic inspection and maintenance of the concrete slab inside the warehouse to ensure that indoor air TCE levels do not pose an unacceptable health risk. EPA determined that the Final Remedy, as modified by the ESD, would remain protective of human health and the environment.
On September 8, 2023, the EPA conducted a Long Term Stewardship assessment to assess whether the remedy was implemented and protective of human health and the environment
Cleanup Actions or environmental indicators characterizing the entire facility are shown below. It is not intended as an extensive list of milestones/activities. This listing, and all the data on this page, come from EPA’s RCRAInfo and are refreshed nightly to this page. For this table and the Cleanup Activities Pertaining to a Portion of the Facility table that follows, a blank in the Status column could mean the action either has not occurred or has not been reported in RCRAInfo.
Cleanup Activities Pertaining to the Entire Facility
| Action | Status | Date of Action |
|---|---|---|
| Human Exposure Under Control Human Exposure Under Control(CA725) | ||
| Groundwater Migration Under ControlGroundwater Migration Under Control (CA750) | ||
| Remedy DecisionRemedy Decision (CA400) | ||
| Remedy ConstructionRemedy Construction (CA550) | ||
| Ready for Anticipated Use Ready for Anticipated Use (CA800) | ||
| Performance Standards AttainedPerformance Standards Attained (CA900) | ||
| Corrective Action Process TerminatedCorrective Action Process Terminated (CA999) |
For definitions of the terms used, hover over or click on the term.
Cleanup Activities Pertaining to a Portion of the Facility
| Action | Area Name | Date of Action |
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For definitions of the terms used, hover over or click on the term.
Facility Description
Link to a larger, interactive view of the map.
The Facility is approximately three acres in size and is located at 6000 Casteel Drive, Coraopolis, Pennsylvania. In 1964, McKesson Chemical Company (McKesson) began operating a solvent distribution service center at the Facility. McKesson stored chemical products in 10 above-ground storage tanks (ASTs). In 1989, Van Waters and Rogers Inc. (VWR) purchased the Facility. During its ownership of the Facility, VWR decommissioned some of the ASTs. In 2002, Univar purchased the Facility and closed the solvent distribution service operation. The 10 ASTs were decommissioned and removed as part of Facility closure activities. Currently, the only significant structure at the Facility is a warehouse that is leased to a moving company, Fdl Logistics. Univar continues to be owner of the Facility.
Contaminants at this Facility
Contaminants of primary concern are 1,1-Dichloroethane; 1,1-Dichloroethene; cis-1,2-Dichloroethene; Tetrachloroethene; 1,1,1-Trichloroethane; Trichloroethylene (TCE), and Vinyl Chloride.
Institutional and Engineering Controls at this Facility
Institutional Controls prohibit on-site groundwater use and restrict the Facility property to non-residential uses, while engineering controls consist of groundwater monitoring as long as the contamination levels in groundwater are above drinking water standards.
Institutional and Engineering Controls help ensure human exposure and groundwater migration are under control at a cleanup facility. Where control types have been reported by states and EPA in EPA’s RCRAInfo, they are shown below. Not all control types are needed at all facilities, and some facilities do not require any controls. Where there are blanks, the control types may not be needed, may not be in place, or may not be reported in RCRAInfo.
Are Controls in Place at this Facility?
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Control(s) Type |
Control(s) in Place? |
Areas Subject to Control(s) |
Documents available on-line: |
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|---|---|---|---|---|
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Institutional ControlsNon-engineering controls used to restrict land use or land access in order to protect people and the environment from exposure to hazardous substances remaining in the site/or facility. (CA 772) |
Informational DevicesInformational Devices (ID) |
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Governmental Controls (GC) |
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Enforcement and Permit Tools (EP) |
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| Proprietary ControlsProprietary Controls (PR) | ||||
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Engineering ControlsEngineering measures designed to minimize the potential for human exposure to contamination by either limiting direct contact with contaminated areas or controlling migration of contaminants. (CA 770) |
Groundwater ControlGroundwater Control (GW) |
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Non-Groundwater |
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For definitions of the terms used, hover over or click on the term.
Enforcement and Compliance at this Facility
EPA’s Office of Enforcement and Compliance Assurance (OECA) provides detailed historical information about enforcement and compliance activities at each RCRA Corrective Action Site in their Enforcement and Compliance Historical Online (ECHO) system.
RCRA Enforcement and Compliance Reports from ECHO
Related Information
For more information about this facility, see these other EPA links:
- RCRA information in EPA’s Envirofacts database
- Information about this facility submitted to EPA under different environmental programs as reported in EPA’s Facility Registry Services
- Alternative Names for this facility as reported by EPA programs in EPA’s Facility Registry Services
- Cleanups in My Community provides an interactive map to see EPA cleanups in context with additional data, and lists for downloading data
- Search RCRA Corrective Action Sites provides a search feature for Corrective Action Sites
Documents, Photos and Graphics
Contacts for this Facility
EPA Region implements and enforces the RCRA Corrective Action program for and federally recognized tribes.
For further information on this corrective action site, use the Contact Information for Corrective Action Hazardous Waste Clean Ups listings that are accessible through Corrective Action Programs around the Nation.