| (B) The maximum predicted concentration or rate at
the property boundary or receptor, whichever is appropriate, must
not exceed a state or federal ambient air standard or ESL.
(5) The impacts analysis shall be based on the following
facility emissions.
(A) The following shall be met for ESL reviews:
(i) If a project's air contaminant maximum predicted
concentrations are equal to or less than 10% of the appropriate ESL,
no further review is required.
(ii) If a project's air contaminant maximum predicted
concentrations combined with project increases for that contaminant
over a 60-month period after the effective date of this revised section
are equal to or less than 25% of the appropriate ESL, no further review
is required.
(iii) In all other cases, all facility emissions at
an OGS, regardless of authorization type, located within 1/4 mile
of a project requiring registration under this section shall be evaluated.
(B) The following shall be met for state and federal
ambient air quality standard reviews:
(i) If a project's air contaminant maximum predicted
concentrations are equal to or less than the significant impact level
(also known as de minimis impact in
Chapter 101 of this title (relating to General Air Quality Rules)),
no further review is required;
(ii) In all other cases, all facility emissions at
an OGS, regardless of authorization type, located within 1/4 mile
of a project requiring registration under this section shall be evaluated.
(6) Evaluation must comply with one of the methods
listed with no changes or exceptions.
(A) Tables.
(i) Emission impact Tables 2 - 5F in subsection (m)
of this section, may be used in accordance with the limits and descriptions
in Table 1 in subsection (m) of this section.
(ii) Values in Tables 2 - 5F in subsection (m) of this
section may be used with linear interpolation between height and distance
points. A distance of less than 50 feet or greater than 5,500 feet
may not be used. Release heights may not be extrapolated beyond the
limits of any table and instead the minimum or maximum height will
be used. If distances and release heights are not interpolated, the
next lowest height and lesser distances shall be used for determination
of maximum acceptable emissions. All facilities exempted from the
distance to the property line restriction in subsection (e)(2) of
this section must use 50 feet as the distance to the property line
for those ambient standards based on property line.
(B) Screening Modeling. A screening model may be used
to demonstrate acceptable emissions from an OGS under this section
if all of the parameters in the screening modeling protocol provided
by the commission are met.
(C) Dispersion Modeling. A refined dispersion model
may be used to demonstrate acceptable emissions from an OGS under
this section if all of the parameters in the refined dispersion modeling
protocol provided by the commission are met.
(l) The requirements in this subsection are applicable
to new and modified facilities except those specified in subsection
(a)(1) of this section. Any oil or gas production facility, carbon
dioxide separation facility, or oil or gas pipeline facility consisting
of one or more tanks, separators, dehydration units, free water knockouts,
gunbarrels, heater treaters, natural gas liquids recovery units, or
gas sweetening and other gas conditioning facilities, including sulfur
recovery units at facilities conditioning produced gas containing
less than two long tons per day of sulfur compounds as sulfur are
permitted by rule, provided that the following conditions of this
subsection are met. This subsection applies only to those facilities
named which handle gases and liquids associated with the production,
conditioning, processing, and pipeline transfer of fluids found in
geologic formations beneath the earth's surface.
(1) Compressors and flares shall meet the requirements
of §106.492 and §106.512 of this title (relating to Flares;
and Stationary Engines and Turbines, respectively). Oil and gas facilities
which are authorized under historical standard exemptions and remain
unchanged maintain that authorization and the remainder of this subsection
does not apply.
(2) Total emissions, including process fugitives, combustion
unit stacks, separator, or other process vents, tank vents, and loading
emissions from all such facilities constructed at a site under this
subsection shall not exceed 25 tpy each of SO2, all
other sulfur compounds combined, or all VOCs combined; and 250 tpy
each of NOX and CO. Emissions of VOC
and sulfur compounds other than SO2 must
include gas lost by equilibrium flash as well as gas lost by conventional
evaporation.
(3) Any facility handling sour gas shall be located
at least one-quarter mile from any recreational area or residence
or other structure not occupied or used solely by the owner or operator
of the facility or the owner of the property upon which the facility
is located.
(4) Total emissions of sulfur compounds, excluding
sulfur oxides, from all vents shall not exceed 4.0 pounds per hour
(lb/hr) and the height of each vent emitting sulfur compounds shall
meet the following requirements, except in no case shall the height
be less than 20 feet, where the total emission rate as H2S, lb/hr, and minimum vent height (feet),
and other values may be interpolated:
(A) 0.27 lb/hr at 20 feet;
(B) 0.60 lb/hr at 30 feet;
(C) 1.94 lb/hr at 50 feet;
(D) 3.00 lb/hr at 60 feet; and
(E) 4.00 lb/hr at 68 feet.
(5) Before operation begins, facilities handling sour
gas shall be registered with the executive director in Austin using
Form PI-7 along with supporting documentation that all requirements
of this subsection will be met. For facilities constructed under §106.353
of this title (relating to Temporary Oil and Gas Facilities), the
registration is required before operation under this subsection can
begin. If the facilities cannot meet this subsection, a permit under
Chapter 116 of this title (relating to Control of Air Pollution by
Permits for New Construction or Modification) is required prior to
continuing operation of the facilities.
(m) The following tables shall be used as required
in this section.
Attached Graphic
|
