Utah Admin. Code R315-266-107 - Hazardous Waste Burned in Boilers and Industrial Furnaces - Standards to Control Hydrogen Chloride (HCl) and Chlorine Gas (Cl 2) Emissions
(a) General. The owner or operator shall
comply with the hydrogen chloride (HCl) and chlorine (Cl
2) controls provided by Subsection R315-266-107(b), (c),
or (e).
(b) Screening limits
(1) Tier I feed rate screening limits. Feed
rate screening limits are specified for total chlorine in appendix II of Rule
R315-266 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 feed streams, including
hazardous waste, fuels, and industrial furnace feed stocks shall not exceed the
levels specified.
(2) Tier II
emission rate screening limits. Emission rate screening limits for HCl and Cl
2 are specified in appendix III of Rule R315-266 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 Cl
2 shall not exceed the levels specified.
(3) Definitions and limitations. The
definitions and limitations provided by Subsection
R315-266-106(b)
for the following terms also apply to the screening limits provided by
Subsection R315-266-107(b): terrain-adjusted effective stack height, good
engineering practice stack height, terrain type, land use, and criteria for
facilities not eligible to use the screening 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 Cl
2 emissions under a RCRA operating permit or interim
status controls shall 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.
(i) The worst-case stack is determined by
procedures provided in Subsection
R315-266-106(b)(6).
(ii) 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.
(iii) Under Tier II, the total emissions of
HCl and Cl 2 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 shall be demonstrated by emissions testing to determine the emission
rate for HCl and Cl 2, 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.
Appendix IV of Rule R315-266 lists the reference air concentrations (RACs) for
HCl, 7 micrograms per cubic meter, and Cl 2, 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 Cl 2
emissions under a RCRA operating permit or interim status controls shall
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 Cl 2.
(d) Averaging periods.
The HCl and Cl 2 controls are implemented by limiting
the feed rate of total chlorine and chloride in all feedstreams, including
hazardous waste, fuels, and industrial furnace feed stocks. 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
Section
R315-266-102(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 appendix II of Rule R315-266 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 Cl
2 provided by appendix IV of Rule R315-266 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 Cl 2 shall be conducted using the procedures
described in Methods 0050 or 0051, EPA Publication SW-846, as incorporated by
reference in Section
R315-260-11.
(g) Dispersion modeling. Dispersion modeling
shall be conducted according to the provisions of Subsection
R315-266-106(h).
(h) Enforcement. For the purposes
of permit enforcement, compliance with the operating requirements specified in
the permit, under Section
R315-266-102,
shall be regarded as compliance with Section R315-266-107. However, evidence
that compliance with those permit conditions is insufficient to ensure
compliance with the requirements of Section R315-266-107 may be "information"
justifying modification or revocation and re-issuance of a permit under Section
R315-270-41.
Notes
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