Current through Register Vol. 50, No. 9, September 20, 2024
A.
General. The owner or operator must comply with the hydrogen chloride (HCl) and
chlorine (Cl2) controls provided by LAC 33:V.3015.B, C,
or E.
B. Screening Limits
1. Tier I Feed Rate Screening Limits. Feed
rate screening limits are specified for total chlorine in 40 CFR 266, Appendix
II, as adopted at LAC 33:V.3099.Appendix B, as a function of terrain-adjusted
effective stack height and terrain and land use in the vicinity of the
facility. The feed rate of total chlorine and chloride, both organic and
inorganic, in all feedstreams, including hazardous waste, fuels, and industrial
furnace feedstocks shall not exceed the levels specified.
2. Tier II Emission Rate Screening Limits.
Emission rate screening limits for HCl and Cl2 are
specified in 40 CFR 266, Appendix III, as adopted at LAC 33:V.3099.Appendix C,
as a function of terrain-adjusted effective stack height and terrain and land
use in the vicinity of the facility. The stack emission rates of HCl and
Cl2 shall not exceed the levels specified.
3. Definitions and Limitations. The
definitions and limitations provided by LAC 33:V.3013.B for the following terms
also apply to the screening limits provided by this Subsection:
terrain-adjusted effective stack height, good engineering practice stack
height, terrain type, land use, and criteria for facilities not eligible to use
the screen limits.
4. Multiple
Stacks. Owners and operators of facilities with more than one on-site stack
from a boiler, industrial furnace, incinerator, or other thermal treatment unit
subject to controls on HCl or Cl2 emissions under a RCRA
operating permit or interim status controls must comply with the Tier I and
Tier II screening limits for those stacks assuming all hazardous waste is fed
into the device with the worst-case stack based on dispersion characteristics.
a. The worst-case stack is determined by
procedures provided in LAC 33:V.3013.B.6.
b. Under Tier I, the total feed rate of
chlorine and chloride to all subject devices shall not exceed the screening
limit for the worst-case stack.
c.
Under Tier II, the total emissions of HCl and Cl2 from
all subject stacks shall not exceed the screening limit for the worst-case
stack.
C.
Tier III Site-Specific Risk Assessments
1.
General. Conformance with the Tier III controls must be demonstrated by
emissions testing to determine the emission rate for HCl and
Cl2, air dispersion modeling to predict the maximum
annual average off-site ground level concentration for each compound, and a
demonstration that acceptable ambient levels are not exceeded.
2. Acceptable Ambient Levels. 40 CFR 266,
Appendix IV, as adopted and amended at LAC 33:V.3099.Appendix D, lists the
reference air concentrations (RACs) for HCl (7 micrograms per cubic meter) and
Cl2 (0.4 micrograms per cubic meter).
3. Multiple Stacks. Owners and operators of
facilities with more than one on-site stack from a boiler, industrial furnace,
incinerator, or other thermal treatment unit subject to controls on HCl or
Cl2 emissions under a RCRA operating permit or interim
status controls must conduct emissions testing and dispersion modeling to
demonstrate that the aggregate emissions from all such on-site stacks do not
result in an exceedance of the acceptable ambient levels for HCl and
Cl2.
D. Averaging Periods. The HCl and
Cl2 controls are implemented by limiting the feed rate
of total chlorine and chloride in all feedstreams, including hazardous waste,
fuels, and industrial furnace feedstocks. Under Tier I, the feed rate of total
chloride and chlorine is limited to the Tier I Screening Limits. Under Tier II
and Tier III, the feed rate of total chloride and chlorine is limited to the
feed rates during the trial burn (for new facilities or an interim status
facility applying for a permit) or the compliance test (for interim status
facilities). The feed rate limits are based on either:
1. an hourly rolling average as defined in
LAC 33:V.3005.E.6; or
2. an
instantaneous basis not to be exceeded at any time.
E. Adjusted Tier I Feed Rate Screening
Limits. The owner or operator may adjust the feed rate screening limit provided
by 40 CFR 266, Appendix II, as adopted at LAC 33:V.3099.Appendix B, to account
for site-specific dispersion modeling. Under this approach, the adjusted feed
rate screening limit is determined by back-calculating from the acceptable
ambient level for Cl2 provided by 40 CFR 266, Appendix
IV, as adopted and amended at LAC 33:V.3099.Appendix D, using dispersion
modeling to determine the maximum allowable emission rate. This emission rate
becomes the adjusted Tier I feed rate screening limit.
F. Emissions Testing. Emissions testing for
HCl and Cl2 shall be conducted using the procedures
described in 40 CFR 266, Appendix IX, as adopted and amended in Methods 0050 or
0051, EPA Publication SW-846, as incorporated by reference in LAC
33:V:110.
G. Dispersion Modeling.
Dispersion modeling shall be conducted according to the provisions of LAC
33:V.3013.H.
H. Enforcement. For
the purposes of permit enforcement, compliance with the operating requirements
specified in the permit (under LAC 33:V.3005) will be regarded as compliance
with this Section. However, evidence that compliance with those permit
conditions is insufficient to ensure compliance with the requirements of this
Section may be "information" justifying modification or revocation and
re-issuance of a permit under LAC 33:V.323.
AUTHORITY NOTE:
Promulgated in accordance with
R.S.
30:2180 et
seq.
