EPA RCRA ID: PAD987270725
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 April 27,2012, The U.S. Environmental Protection Agency (EPA) has determined that corrective action is complete without controls at the Siemens Water Technologies Corp. (formerly Envirotrol Inc.) Darlington facility. The facility is currently owned by Evoqua Water Technologies.
On June 27, 1996, EPA conducted a comprehensive sampling event at the facility. The goal for the sampling was to gather data in response to allegations by area residents that dust emissions from the facility were migrating offsite. EPA sampled spent carbon being processed in the kilns and scrubber water from the company’s air pollution control system. Air samples were taken at several outdoor locations as well as inside the main processing building. Dust samples were also taken from locations on the property, from the adjacent Grief Brothers and Star Brite facilities, and from five residential properties. Carbon and scrubber water samples were analyzed to identify elements that were characteristic of the carbon being handled at the facility. The air and dust samples were analyzed for the same characteristic elements and compared to the carbon and scrubber water samples. EPA analysis found that none of the dust accumulations at the neighboring businesses and residential properties could be directly attributed to the management of spent carbon at the facility. The only environmental samples that “matched” carbon samples taken from the facility were dust samples taken from trailers parked next to the roll up doors of the facility’s main processing building. No dust samples taken from off-site locations, including those taken from private homes and the Grif Brothers and Star Brite facilities, “matched” the spent carbon samples. EPA concluded for the sampling results that the operations at the facility have not adversely impacted the environment or the surrounding community. Furthermore, EPA has determined that both Environmental Indicators for human exposures and groundwater migration have been met.
On March 15, 1999, EPA issued a 3004(u) Permit to Siemens Water Technologies to operate a hazardous waste carbon regeneration facility with associated hazardous waste storage and handling. Compliance with this permit and the Pennsylvania Department of Environmental Protection (PADEP) Air Quality Permit satisfies the requirements of Resource Conservation and Recovery Act (RCRA) Corrective Section 3004 (u) and 3005 (c) (3).
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 |
|---|
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 Siemens facility is located at 118 Park Road, Darlington, Pennsylvania 16115. The Facility is approximately 20 acres and consists of a 100,000 square feet operation building. Siemens regenerates spent carbon through thermal treatment. The Facility treats approximately 50,000 pounds of spent carbon per day.
Siemens is a permitted facility. The permit sets forth the conditions and requirements for the management of hazardous wastes and the operations of the kilns to regenerate spent carbon via thermal treatment. The regeneration process consists of placing the spent carbon into a kiln at various temperatures until the volatiles are driven off. The kiln is an oxygen free environment that prevents the carbon from burning and being destroyed. From the kiln the regenerated carbon is sent into a cooling screw where it is cooled by noncontact water that is sprayed on the exterior of the cooling screw. When the regenerated carbon leaves the cooling screw it is packaged for shipment.
The acid gases by-products from the thermal treatment are diverted to an after burner where residual fly ash in the gases is further incinerated to destroy any remaining heavy organics. The gases are then sent to a wet scrubber where particulates and pollutants are removed. A final stage through a carbon packed column removes the acid gas and produces clean steam, which is discharged to the atmosphere. Waste water collected from the wet scrubber is disposed offsite as hazardous wastes.
Contaminants at this Facility
Contaminants at the facility primarily include waste oils from cutting, milling, and de-burring operations. Several waste oil releases from the facility to Walnut Bottom Run have occurred in the past; however, many of the operations from which these releases occurred (sumps, troughs, planers, and an underground storage tank) were cleaned and removed in the 1990s. Therefore, potential risks to ecological receptors in Walnut Bottom Run have been minimized, and risk to potential human receptors is likely negligible.
Institutional and Engineering Controls at this Facility
Institutional Controls were not required at the facility.
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?
|
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.