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Air Force Plant Number 4 (AFP4)

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Air Force Plant Number 4 (AFP4) in Fort Worth, Texas, has submitted an ENVVEST program proposal that proposes a 72% reduction in total plant-wide chrome airborne emissions in exchange for relief from a hazardous pollutant control device required by the Aerospace National Emission Standards for Hazardous Air Pollutant (NESHAP) regulation. The Plant proposes to install two new industrial boilers that would potentially eliminate more than 800 tons of nitrogen oxide emissions instead of the two-stage paint booth particulate filters required by NESHAP. In return for this regulatory flexibility, Air Force Plant #4 proposes to reduce plant wide airborne chrome emissions from three different processes through elimination, reduction, or substitution of chromium compounds.


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