asphalt.txt
asphalt.txt — 1.7 KB
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Asphalt Concrete Plants TNRCC Rule 116.111(3) in Regulation VI requires that Best Available Control Technology (BACT) be applied to all facilities that must obtain a permit. BACT is defined as any control method which is technically feasible and economically reasonable. BACT determinations are made on a case-by-case basis. The applicant is encourage to talk with a TNRCC NSR Permit Engineer to determine BACT for the facility. Current control practices include: 1. Fabric filter baghouses or venturi scrubbers with at least ninety-eight percent efficiency to control particulate matter from the drum/dryer/mixer. 2. All aggregate materials washed prior to delivery. 3. At least seventy percent control of fugitive dust emission from the handling of aggregate materials. 4. At least ninety-five percent control of fugitive dust emissions from all roads and traffic areas. 5. Less than five percent opacity from all point sources. 6. Maximum mix temperature of 325 F. 7. At least ninety-nine percent control of all volatile organic compound (VOC) emissions resulting from cutback or emulsified liquid asphalt. 8. A mechanism to eliminate hot gas scorching when using recycled asphalt products. 9. Sweet natural gas as a fuel source for the operation of the dryer. 10. A maximum of 0.3 percent total sulfur in any liquid fuel used. 11. Additional controls may be required if significant VOC concentrations are detected from the use of crumb rubber or any other additive. The control requirements listed are guidelines to help the applicant determine what the TNRCC is currently considering as BACT; however these control levels are subject to change.