1. (a) Subject to (b), below, the emission limits for existing OSWI units shall be as specified in Table 4303-1, below, for the listed air pollutants or parameters and all OSWI technologies:

   Table 4303-1: Emission Limits for All Existing OSWI Units

   Pollutant/Parameter

   Emission Limits ^a

   Averaging Time

   Compliance Determination ^{b, c}

   Cadmium (Cd)

   18 micrograms per dry standard cubic meter (μg/dscm)

   3-run average (1 hour minimum sample run time)

   EPA Method 29

   Carbon Monoxide (CO)

   40 parts per million dry volume (ppmdv)

   3-run average (1 hour minimum sample run time), and 12-hour rolling averages measured using CEMS

   EPA Methods 10, 10A or 10B

   Dioxins/Furans, total mass basis

   33 nanograms per dry standard cubic meter (ng/dscm)

   3-run average (1 hour minimum sample run time)

   EPA Method 23

   Hydrogen Chloride (HCl)

   15 ppmdv

   3-run average (1 hour minimum sample run time)

   EPA Method 26A

   Lead (Pb)

   226 μg/dscm

   3-run average (1 hour minimum sample run time)

   EPA Method 29

   Mercury (Hg)

   74 μg/dscm

   3-run average (1 hour minimum sample run time)

   EPA Method 29

   Opacity

   10 percent

   6-minute average (observe over three 1-hour test runs)

   EPA Method 9

   Oxides of Nitrogen (NOx)

   103 ppmdv

   3-run average (1 hour minimum sample run time)

   EPA Methods 7, 7A, 7C, 7D or 7E ^d

   Particulate Matter (PM)

   0.013 grains per dry standard cubic foot (gr/dscf)

   3-run average (1 hour minimum sample run time)

   EPA Methods 5 or 29

   Sulfur Dioxide (SO2)

   3.1 ppmdv

   3-run average (1 hour minimum sample run time)

   EPA Method 6 or 6C ^e

2. (b) The following notes shall apply to Table 4303-1:

   1. (1) The letter “a” shall indicate that all emission limits except opacity are measured at 7 percent oxygen, dry basis at standard conditions;
   2. (2) The letter “b” shall indicate that these methods are found in 40 CFR part 60, appendix A;
   3. (3) The letter “c” shall indicate that compliance with the CO emission limit is determined on a 12-hour rolling average basis using continuous emission monitoring system data;
   4. (4) The letter “d” shall indicate that ANSI/ASME PTC 19.10-1981-Part 10 is an acceptable alternative to Methods 7 and 7C only; and
   5. (5) The letter “e” shall indicate that ANSI/ASME PTC 19.10-1981-Part 10 is an acceptable alternative to Method 6 only.

Source. #8787, eff 1-5-07; ss by #10765, eff 1-22-15; ss by #14248, eff 5-20-25, EXPIRES: 5-20-35