| Area | Site Applicability | Boiler Size (design heat input) | NOx Limit | Rule Citation in 30 T.A.C. |
|---|---|---|---|---|
| Beaumont / Port Arthur (BPA): Hardin, Jefferson, and Orange Counties | Major NOx sites(>=50 tpy NOx) | >40 MMBtu/hrIn operation on or before 11/15/92. | 0.10 lb NOx/MMBtu (82 ppmv NOx @3% O2)Comply: 2/3 by 5/1/03; all by 5/1/05. | §117.206(a)(1) §117.520 (a)(3) |
| Dallas / Fort Worth (DFW): Collin, Dallas, Denton, and Tarrant Counties | Major NOx sites(>=50 tpy NOx) | >40 MMBtu/hrIn operation on or before 11/15/92. | 30 ppmv NOx @3% O2 Comply by 3/31/02. | §117.206(b)(1) §117.520 (b) |
| Houston / Galveston (HGA): Harris, Galveston, Brazoria, Chambers, Fort Bend, Liberty, Montgomery, and Waller Counties | Sites with less than 10 tons NOx per year design capacity to emit, from units subject to §117.206 or §117.475, are not in cap-and-trade. (citation: §101.351) | >2 MMBtu/hr Size limited by site 10 tons NOx per year design capacity to emit. | 0.036 lb NOx/MMBtu (30 ppmv NOx @3% O2) Comply by 3/31/05. | §117.475(c)(1) §117.534 (2)(C) |
| Sites >= 10 tpy NOx as above, but less than major NOx source (< 25 tpy NOx potential to emit from all emitting sources) | >2 MMBtu/hr but limited by site classification as non-major (minor) source. | trade compliance. NOx allocation based on 0.036 lb NOx/MMBtu Cap reductions 2004-2008. | §101.351 §117.475(c)(1) §101.353 | |
| Major NOx sites (>=25 tpy NOx potential to emit) | >2 and <40 MMBtu/hr | Cap-and-trade compliance. 0.036 lb NOx/MMBtu Cap reductions 2004-2008. | §101.351 §117.206(c)(1) §101.353 | |
| Major NOx sites | >=40 and <100 MMBtu/hr | Cap-and-trade compliance. 0.030 lb NOx/MMBtu Cap reductions 2004-2008. | §101.351 §117.206(c)(1) §101.353 | |
| Major NOx sites | >=100 MMBtu/hr | Cap-and-trade compliance. 0.020 lb NOx/MMBtu Cap reductions 2004-2008. | §101.351 §117.206(c)(1) §101.353 | |
| Statewide | Old boilers | >=40 MMBtu/hr Grandfathered units (constructed before 9/71) | 120-month old BACT1(0.06 lb/MMBtu) Comply 3/07 ETx; 3/08WTx | §116.811(3)(A) §116.779 (c) §116.771 |
| Area | Site | Boiler Size (design heat input) | NOx Limit2 | Rule Citation In 30 T.A.C. |
|---|---|---|---|---|
| Statewide – requirements starting with manufacturing dates of 7/1/2002 (or 1/1/2005 where noted) | Any | <=75,000 Btu/hr <=75,000 Btu/hr (1/1/05) >75,000 & <=400,000 Btu/hr >400,000 & <=2 MM Btu/hr | 40 ng/J heat output (55 ppm) 10 ng/J heat output (15 ppm) 40 ng/J heat output (55 ppm) 30 ppm (0.037 lb/MMBtu) | §117.465(1) §117.465(2) §117.465(3) §117.465(4) |
| Statewide (see also HGA3) | Any | >2 and <=10 MMBtu/hr | None | §106.183 Permit-by-Rule |
| Statewide (see also HGA3) | Any | >10 and <=40 MMBtu/hr | 0.10 lb/MMBtu | §106.183 Permit-by-Rule |
| Statewide (see also HGA3) | Any | >40 MMBtu/hr | Best Available Control Technology (case-by-case) 3/03 guidance – 9 ppmv | §116.111(a)(2) (C) New Source Permit |
| HGA | Sites with less than 10 tons NOx per year design capacity to emit, from units subject to §117.206 or §117.475, are not in cap-and-trade. (citation: §101.351) | >2 MMBtu/hr Size limited by 10 tons NOx per year design capacity to emit. | 0.036 lb NOx/MMBtu (30 ppmv NOx @3% O2) Comply by 3/31/05. Permit authorization still required. | §117.475(c)(1) §117.534(2)(C) |
| Sites >=10 tpy NOx design capacity to emit from units subject to §117.206 or §117.475, must participate in cap-and-trade compliance. (citation: §101.351) | >2 MMBtu/hr | New units after 1/2/01 get no NOx allocation but must obtain NOx allowance to cover emissions. Permit authorization still required. | §117.353(b) | |
