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Covanta Plymouth

Maintenance Update

On Friday evening (3/20) at 6:40 pm, Covanta Plymouth experienced an issue with the facility’s Distributed Control System (DCS) power supply card that resulted in intermittent venting of non-contact steam. The venting of steam creates noise that may be noticeable beyond the facility fence line. By 7:00 pm, operators were able to replace the power supply card and the venting of steam was terminated. During this time period, both Boiler 1 and the Turbine Generator remained on-line with no excess emissions. Boiler 2 was in scheduled outage and was off-line.

Covanta Plymouth will begin routine scheduled maintenance work Sunday, March 15. The work will include a brief period during which both units and the turbine generator are removed from service for maintenance of common systems.

Shutdown of the first unit will begin Sunday evening with a possible slight increase in sound from around 11:00 pm to midnight as low pressure steam is vented from the roof vents. The second unit will be shut down early Monday morning, with a possible slight increase in sound from around 3:00 am – 4:00 am. There could be increased sounds, including audible notices to site personnel to clear specific areas, occurring from noon through approximately 6:00 pm on Monday.

One unit is expected to return to service early next week. Scheduled maintenance work on the second unit is expected to continue throughout the remainder of the month.

About the Facility

Covanta Plymouth began commercial operation in February 1992 and serves communities and businesses in Eastern Pennsylvania with sustainable waste disposal. It provides an alternative to landfilling post-recycled waste that reduces greenhouse gases and generates energy. The facility processes approximately 1,216 tons per day of municipal solid waste and generates enough energy to power 25,000 homes. The facility is also a large recycler of metal, annually recovering enough to build more than 4,600 cars.

The Covanta Plymouth facility is equipped with a water-cooled turbine-generator condenser that converts steam to water for continuous cycling of water through the boilers. It also features extensive pollution control systems, including flue gas scrubbers injecting lime, fabric filter baghouses, nitrogen oxide control, mercury control and a continuous emissions monitoring system.

The facility is a recipient of the U.S. Occupational Safety and Health Administration’s (OSHA) Voluntary Protection Program (VPP) Star award. Acceptance into the VPP Star program is official recognition of the outstanding efforts of employers and employees to achieve exemplary occupational safety and health policies, procedures and practice.

Contact Us

Please contact our dedicated 24-hour hotline at 610-569-9372 with any questions or concerns.

We welcome the opportunity to show you how our resource recovery process works. If you are interested in a tour of the facility, please fill out the adjacent form.

Tour Checklist (PDF)

Covanta Plymouth

1155 Conshohocken Road
Conshohocken, PA 19428

Contact Information:

Frank Capobianco


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Downloadable Fact Sheets

Plymouth facility fact sheet

Covanta Plymouth Facts and Figures

Facility Performance Sheet preview

Facility Performance Data

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How the Energy-from-Waste Process Works

Facts about Emissions at Covanta Facilities

Covanta Plymouth Emissions Data

Data Presented in Permit Required Units as Averaged Emissions

(a) CO values are the maximum 4-hr block average for the day.
(b) SO2 and NOx values are the daily (24-hr) block averages for that day.
(c) Opacity values are the maximum 6-minute average for that day.
(d) All emission values reported in units consistent with the permit:
     CO, SO2 and NOx reported as parts per million, dry gas basis at 7% O2 (ppmdv7), Opacity as %, Removal Efficiency as %
(e) SO2 and HCL compliance based on concentration (ppm) or removal efficiency (% reduction between inlet and outlet emissions).
(f) CO emissions during periods of unit startup and shutdown are exempt as per the Title V Operating permit.

* Results are provided for informational purposes only and are subject to adjustment based on allowable quality assurance/quality control (QA/QC) review.