[Title 40 CFR 60.45Da]
[Code of Federal Regulations (annual edition) - July 1, 2009 Edition]
[Title 40 - PROTECTION OF ENVIRONMENT]
[Chapter I - ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)]
[Subchapter C - AIR PROGRAMS (CONTINUED)]
[Part 60 - STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--]
[Subpart Da - Standards of Performance for Electric Utility Steam]
[Sec. 60.45da - Standard for mercury (Hg).]
[From the U.S. Government Printing Office]


40PROTECTION OF ENVIRONMENT62009-07-012009-07-01false60.45DaSec. 60.45DaPROTECTION OF ENVIRONMENTENVIRONMENTAL PROTECTION AGENCY (CONTINUED)AIR PROGRAMS (CONTINUED)STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--Standards of Performance for Electric Utility Steam
Sec. 60.45Da  Standard for mercury (Hg).

    (a) For each coal-fired electric utility steam generating unit other 
than an IGCC electric utility steam generating unit, on and after the 
date on which the initial performance test is completed or required to 
be completed under Sec. 60.8, whichever date comes first, no owner or 
operator subject to the provisions of this subpart shall cause to be 
discharged into the atmosphere from any affected facility for which 
construction, modification, or reconstruction commenced after January 
30, 2004, any gases that contain mercury (Hg) emissions in excess of 
each Hg emissions limit in paragraphs (a)(1) through (5) of this section 
that applies to you. The Hg emissions limits in paragraphs (a)(1) 
through (5) of this section are based on a 12-month rolling average 
basis using the procedures in Sec. 60.50Da(h).
    (1) For each coal-fired electric utility steam generating unit that 
burns only bituminous coal, you must not discharge into the atmosphere 
any gases from a new affected source that contain Hg in excess of 20 x 
10-\6\ pound per megawatt hour (lb/MWh) or 0.020 lb/gigawatt-
hour (GWh) on an output basis. The International System of Units (SI) 
equivalent is 0.0025 ng/J.
    (2) For each coal-fired electric utility steam generating unit that 
burns only subbituminous coal:
    (i) If your unit is located in a county-level geographical area 
receiving greater than 25 inches per year (in/yr) mean annual 
precipitation, based on the most recent publicly available U.S. 
Department of Agriculture 30-year data, you must not discharge into the 
atmosphere any gases from a new affected source that contain Hg in 
excess of 66 x 10-\6\ lb/MWh or 0.066 lb/GWh on an output 
basis. The SI equivalent is 0.0083 ng/J.
    (ii) If your unit is located in a county-level geographical area 
receiving less than or equal to 25 in/yr mean annual precipitation, 
based on the most recent publicly available U.S. Department of 
Agriculture 30-year data, you must not discharge into the atmosphere any 
gases from a new affected source that contain Hg in excess of 97 x 
10-\6\ lb/MWh or 0.097 lb/GWh on an output basis. The SI 
equivalent is 0.0122 ng/J.
    (3) For each coal-fired electric utility steam generating unit that 
burns only lignite, you must not discharge into the atmosphere any gases 
from a new affected source that contain Hg in excess of 175 x 
10-\6\ lb/MWh or 0.175 lb/GWh on an output basis. The SI 
equivalent is 0.0221 ng/J.
    (4) For each coal-burning electric utility steam generating unit 
that burns only coal refuse, you must not discharge into the atmosphere 
any gases from a new affected source that contain Hg in excess of 16 x 
10-\6\ lb/MWh or 0.016 lb/GWh on an output basis. The SI 
equivalent is 0.0020 ng/J.
    (5) For each coal-fired electric utility steam generating unit that 
burns a blend of coals from different coal ranks (i.e., bituminous coal, 
subbituminous coal, lignite) or a blend of coal and coal refuse, you 
must not discharge into the atmosphere any gases from a new affected 
source that contain Hg in excess of the unit-specific Hg emissions limit 
established according to paragraph (a)(5)(i) or (ii) of this section, as 
applicable to the affected unit.
    (i) If you operate a coal-fired electric utility steam generating 
unit that burns a blend of coals from different coal ranks or a blend of 
coal and coal

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refuse, you must not discharge into the atmosphere any gases from a new 
affected source that contain Hg in excess of the computed weighted Hg 
emissions limit based on the Btu, MWh, or MJ) contributed by each coal 
rank burned during the compliance period and its applicable Hg emissions 
limit in paragraphs (a)(1) through (4) of this section as determined 
using Equation 1 in this section. For each affected source, you must 
comply with the weighted Hg emissions limit calculated using Equation 1 
in this section based on the total Hg emissions from the unit and the 
total Btu, MWh, or MJ contributed by all fuels burned during the 
compliance period.
[GRAPHIC] [TIFF OMITTED] TR13JN07.011

Where:

ELb = Total allowable Hg in lb/MWh that can be emitted to the 
atmosphere from any affected source being averaged according to this 
paragraph.
ELi = Hg emissions limit for the subcategory i (coal rank) 
that applies to affected source, lb/MWh;
HHi = For each affected source, the Btu, MWh, or MJ 
contributed by the corresponding subcategory i (coal rank) burned during 
the compliance period; and
n = Number of subcategories (coal ranks) being averaged for an affected 
source.

    (ii) If you operate a coal-fired electric utility steam generating 
unit that burns a blend of coals from different coal ranks or a blend of 
coal and coal refuse together with one or more non-regulated, 
supplementary fuels, you must not discharge into the atmosphere any 
gases from a new affected source that contain Hg in excess of the 
computed weighted Hg emission limit based on the Btu, MWh, or MJ 
contributed by each coal rank burned during the compliance period and 
its applicable Hg emissions limit in paragraphs (a)(1) through (4) of 
this section as determined using Equation 1 in this section. For each 
affected source. You must comply with the weighted Hg emissions limit 
calculated using Equation 1 in this section based on the total Hg 
emissions from the unit contributed by both regulated and nonregulated 
fuels burned during the compliance period and the total Btu, MWh, or MJ 
contributed by both regulated and nonregulated fuels burned during the 
compliance period.
    (b) For each IGCC electric utility steam generating unit, on and 
after the date on which the initial performance test required to be 
conducted under Sec. 60.8 is completed, no owner or operator subject to 
the provisions of this subpart shall cause to be discharged into the 
atmosphere from any affected facility for which construction, 
modification, or reconstruction commenced after January 30, 2004, any 
gases that contain Hg emissions in excess of 20 x 10-\6\ lb/
MWh or 0.020 lb/GWh on an output basis. The SI equivalent is 0.0025 ng/
J. This Hg emissions limit is based on a 12-month rolling average basis 
using the procedures in Sec. 60.50Da(h).