Standard Exemptions 122 - 123, June 18, 1992 Standard Exemption
List
Clicking on a highlighted number below
links you to the standard exemption.
122 |
123
122. Any silo used to store hot mix
asphalt or asphalt emulsion concrete mixtures which meets the
following conditions:
(a) No cutback asphalt mixtures are stored;
(b) For silos on location for more than six months, all truck
traffic areas are paved and cleaned as necessary to achieve maximum
control of dust emissions and for those silos on location for six
months or less, the truck traffic areas are sprinkled with water
and/or chemicals as necessary to achieve maximum control of dust
emissions.
(c) Fuel used for heating the silo is sweet natural gas as
defined in the General Rules as adopted by the TACB or liquid
petroleum gas or first run refinery grade diesel or Number 2 fuel
oil that is not a blend containing waste oils or solvents and that
contains less than 0.5% by weight sulfur.
(d) The silo(s) is located at least 300 feet from any
recreational area, school, residence, or other structure not
occupied or used solely by the owner of the property upon which the
silo(s) is located.
(e) Before construction begins, written site approval is
received from the Executive Director of the TACB and the facility
is registered with the appropriate regional office using Form PI-7.
123. Any new aerospace equipment
and parts manufacturing plant, or physical and operational change
to an existing aerospace equipment and parts manufacturing plant,
provided that the following conditions are satisfied:
(a) For purposes of this exemption, aerospace equipment and
parts manufacturing plant means the entire operation on the
property which engages in the fabrication or assembly of parts,
tools, or completed components of any aircraft, helicopter,
dirigible, balloon, missile, drone, rocket, or space vehicle. This
exemption will not include composite aerospace equipment and parts
manufacturing plants. Composite plants are defined to be plants
whose products are less than 50% metal, by weight, based on annual
production figures. This definition excludes those operations
specifically authorized by other exemptions. For example, a boiler
would not be considered a part of the aerospace manufacturing
plant, but could be authorized under Standard Exemption Number 7 if
all pertinent requirements were met.
(b) Emission points associated with the aerospace equipment
and parts manufacturing plant or changes to that plant shall be
located at least 100 feet from any off-plant receptor*.
(c) The total annual emissions, in tons per year, of the
following air contaminants authorized under this exemption, on a
cumulative basis, from the entire aerospace manufacturing plant
does not exceed the values specified:
|
| Inhalable Particulate
matter |
5 tpy |
| Volatile Organic Compounds
(VOC) |
15 tpy |
| Acid gases or vapors |
5 tpy |
| Non VOC carbon compound
emissions |
10 tpy |
| Total of all the above
air contaminants |
25 tpy |
(d) Hourly emissions of total new or increased emissions,
including fugitives, of particulate matter or chemicals listed or
referenced in Table 118A of Standard Exemption 118 shall not exceed
the hourly emission rate, E, as determined using the equation, E =
L/K lb/hr and Table 123A, where:
|
| D, Feet |
K |
| 100 |
326 |
| 200 |
200 |
| 300 |
139 |
| 400 |
104 |
| 500 |
81 |
| 600 |
65 |
| 700 |
54 |
| 800 |
46 |
| 900 |
39 |
| 1000 |
34 |
| 2000 |
14 |
| 3000 or more |
1 |
E = maximum allowable hourly emission and never to exceed 6
pounds per hour.
L = value as listed or referenced in Table 123A
K = value from the table on this page. Interpolate
intermediate values
D = distance to the nearest off-plant receptor.
(e) Before construction or change in operation begins,
registration shall be submitted to the appropriate TACB regional
office using a completed Form PI-7.
The emission data provided in the PI-7 shall include all
process emission sources at the plant, both existing and proposed,
and shall be the maximum allowed emissions for permitted units, the
actual emissions for existing grandfathered or exempted units, and
the projected maximum allowable emissions for proposed units.
Emissions shall be speciated by chemical compound and the stack
parameters, as appropriate, for each emission source shall be
provided.
Registration shall include a description of the project,
calculations, and data identifying specific chemical names, "L"
values, "D" values, and a description of pollution control
equipment, if any.
(f) An emissions inventory shall be compiled and/or updated on
an annual basis for all process emission sources on the property,
maintained on a two-year rolling retention cycle, and made
available upon request by the Executive Director. The inventory
records should include the basis for all emissions estimates,
sample calculations, and material usage records. Material and
solvent usage records shall be maintained in sufficient detail to
document compliance with this standard exemption.
(g) Emissions from each existing and proposed stack, hood,
vent, or opening to the atmosphere shall have no visible emissions.
(h) Any facility in which any chemical listed in paragraph (4)
of this condition will be handled or stored as a liquid or a
compressed gas in a compound mixture of a concentration greater
than 10% by weight or an aqueous solution of any chemical listed in
(4) greater than 50% by weight shall comply with paragraphs (1)-(3)
below:
(1) The facility shall be located at least 300 feet from the
nearest property line and 600 feet from any off-plant receptor.
(2) The cumulative amount of any one of the chemicals listed
in paragraph (4) of this condition, resulting from one or more
authorizations under this exemption, shall not exceed 500 pounds on
the plant property.
(3) Any chemical listed in paragraph (4) of this condition
shall be handled only in containers operated in compliance with
United States Department of Transportation regulations (49 Code of
Federal Regulations Parts 171 through 178).
(4) Listed chemicals are: acrolein, ammonia, bromine, carbon
disulfide, chlorine, ethyl mercaptan, hydrogen chloride, hydrogen
bromide, hydrogen cyanide, hydrogen fluoride, hydrogen sulfide,
phosphine, sulfur dioxide, methyl bromide, methyl isocyanate,
methyl mercaptan, nickel carbonyl, phosgene.
*Off-plant receptor means any recreational area or residence
or other structure not occupied or used solely by the owner or
operator of the aerospace equipment and parts manufacturing plant
or the owner of the property upon which the aerospace plant is
located. Controlled access recreational areas owned by the property
owner or the owner or operator of the aerospace plant are not
off-plant receptors.
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