concrete.txt
concrete.txt — 1.5 KB
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Concrete Batch 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. All dry material storage silos equipped with fabric filter baghouses having a maximum outlet grain loading of 0.01 grains per dry standard cubic foot (gr/dscf). 2. All storage silos equipped with audible or visual warning devices to prevent overloading. 3. All aggregate material washed prior to delivery. 4. At least seventy percent control of fugitive dust emissions from the stockpiling and handling of aggregate material (sufficient application of water by sprays or fog rings). 5. At least ninety-five percent control of fugitive dust emissions from the weigh hopper and truck drop point (usually achieved by a baghouse and suction shroud). 6. At least ninety-five percent control of fugitive dust emission from roads and traffic areas (paving and wet or dry sweeping acceptable). 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.