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  • PDEQ to hold final hearing for TEP power permit

    Mar 15, 2018 | Read More News
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    The Pima County Department of Environmental Quality (PDEQ) is holding a second formal Public Hearing regarding the proposed Tucson Electric Power Air Quality Permit (TEP).  This hearing will be on Wednesday, March 28, 2018, from 5:30 – 6:30 p.m. at the Pima County Public Works Building at 201 N. Stone Avenue, in the Basement Conference Room C. Parking is available along nearby streets. Metered parking is free after 5 p.m. Parking is also available in the Main Library Parking Garage off Alameda and the first hour is free. Multiple Sun Tran routes service the area, as well as the Sun Link streetcar.
    UniSource building 
    The purpose of this formal hearing is to obtain public comments on a proposed major modification to the existing Air Quality Permit #1052 for TEP Irvington/H.Wilson Sundt Generating Station located at 3950 Irvington Road. The official Public Comment Period, during which anyone can submit written comments to the PDEQ regarding this project, began on February 9, 2018 and continues through March 29, 2018. 
    TEP is proposing to modernize the power generating station by replacing two 1950's era steam units with ten natural gas fired combustion engines that will have a generating capacity of nearly 19 MW each.  The project has the potential to cause an increase in emissions of carbon monoxide, particulate matter (fine particles PM2.5 and coarse particles PM10), nitrogen oxides and volatile organic compounds over time. This potential increase in emissions makes the permit modification subject to the Prevention of Significant Deterioration (PSD) permitting requirements. According to information provided to PDEQ by TEP, they plan to expand renewable energy resources to 30 percent by 2030. The new engines are able to ramp up more quickly to meet peak load needs for the community and help balance the variability associated with solar and wind energy generation.
    PDEQ has worked with TEP, the U.S. Environmental Protection Agency, the National Park Service and consultants to create a permit that will meet regulations and protect public health while allowing TEP to update its facility to increase electricity generated for future customer needs and manage the fluctuations from energy generated by renewable resources.  All documents pertaining to the proposed permit can be found on PDEQ's website.
    For additional information about the permit modification, call PDEQ at (520) 724-7400. Submit a comment regarding the draft permit by March 29, 2018, by email: Rupesh.Patel@pima.gov, mail or drop off to: PDEQ, Air Permits, 33. N. Stone Ave., Suite 700; Tucson, AZ 85701.