326 IAC 6.8-2-37 United States Gypsum Company

Sec. 37. United States Gypsum Company in Lake County, source identification number 00333, shall meet the following emission limits: Emission Limits Source Units lbs/hr Raw material handling Each stack serving raw material conveying and storage, stacks J11, J12, and J13 0.015 gr/dscf 0.190 Rock handling process Drying, grinding, and calcining, stack M1 0.012 gr/dscf 3.210 Stucco elevating and conveying, stack M2 0.015 gr/dscf 2.210 Wallboard manufacturing process Paper grinding and stucco system, stack B1 0.020 gr/dscf 2.230 Specialty board manufacturing process (kerfing), stack B3 0.020 gr/dscf 0.260 Each stack serving ready mix process, stacks J1, J2, and J3 0.017 lbs/ton 0.100 Dry texture paint process Mixing and packing, stack J4 0.020 gr/dscf 0.190 Bag dumping, stack J5 0.010 gr/dscf 0.100 Dry additive conveying, stack J6 0.010 gr/dscf 0.030 Dry joint compound process Mixing and packing, stack J7 0.020 gr/dscf 0.340 Additive bag dumping, stack J8 0.010 gr/dscf 0.34