| (a) The following exemptions apply in the Beaumont-Port
Arthur, Bexar County, Dallas-Fort Worth, El Paso, and Houston-Galveston-Brazoria
areas and in Bastrop, Caldwell, Comal, Gregg, Guadalupe, Hays, Nueces,
Travis, Victoria, Williamson, and Wilson Counties. The exemptions
in this subsection are no longer available for an operation subject
to §115.412(b) of this title (relating to Control Requirements)
in the Dallas-Fort Worth area or §115.412(c) of this title in
the Houston-Galveston-Brazoria area as of the compliance date specified
in §115.419(f) or §115.419(g), respectively.
(1) Any cold solvent cleaning system is exempt from
the provisions of §115.412(a)(1)(B) of this title and may use
an external drainage facility in place of an internal type drainage
system, if the true vapor pressure of the solvent is less than or
equal to 0.6 pounds per square inch absolute (psia) (4.1 kilo Pascals
(kPa)) as measured at 100 degrees Fahrenheit (38 degrees Celsius)
or if a cleaned part cannot fit into an internal drainage facility.
(2) The following are exempt from the requirements
of §115.412(a)(1)(E) of this title:
(A) a cold solvent cleaning system for which the true
vapor pressure of the solvent is less than or equal to 0.6 psia (4.1
kPa) as measured at 100 degrees Fahrenheit (38 degrees Celsius), provided
that the solvent is not heated above 120 degrees Fahrenheit (49 degrees
Celsius); and
(B) remote reservoir cold solvent cleaners.
(3) Any conveyorized degreaser with less than 20 square
feet (ft2 ) (2 square meters (m2 )) of air/vapor interface is exempt from the
requirement of §115.412(a)(3)(A) of this title.
(4) An owner or operator who operates a remote reservoir
cold solvent cleaner that uses solvent with a true vapor pressure
equal to or less than 0.6 psia (4.1 kPa) measured at 100 degrees Fahrenheit
(38 degrees Celsius) and that has a drain area less than 16 square
inches (in2 ) (100 square centimeters
(cm2 )) and who properly disposes of waste
solvent in enclosed containers is exempt from §115.412(a)(1)
of this title.
(5) In Gregg, Nueces, and Victoria Counties, degreasing
operations located on any property that can emit, when uncontrolled,
a combined weight of volatile organic compounds (VOC) less than 550
pounds in any consecutive 24-hour period are exempt from the provisions
of §115.412 of this title.
(b) If the commission publishes notice in the Texas Register, as provided in §115.419(f)
of this title for the Dallas-Fort Worth area and/or §115.419(g)
of this title for the Houston-Galveston-Brazoria area, to require
compliance with the contingency measure control requirements of §115.412(b)
of this title for the Dallas-Fort-Worth area and/or §115.412(c)
of this title for the Houston-Galveston-Brazoria area, then the following
exemptions apply in the applicable area as of the compliance date
specified in §115.419(f) or (g) of this title.
(1) Any cold solvent cleaning system is exempt from
the provisions of §115.412(a)(1)(B) of this title and may use
an external drainage facility in place of an internal type drainage
system if the VOC content of the solvent is less than or equal to
25 grams per liter (g/l) or if a cleaned part cannot fit into an internal
drainage facility.
(2) The following are exempt from the requirements
of §115.412(a)(1)(E) of this title:
(A) a cold solvent cleaning system for which the VOC
content of the solvent is less than or equal to 25 g/l; and
(B) remote reservoir cold solvent cleaners.
(3) An owner or operator who operates a remote reservoir
cold solvent cleaner that uses solvent with a VOC content that is
less than or equal to 25 g/l and that has a drain area less than 16
(in2 ) (100 (cm2 ))
and who properly disposes of waste solvent in enclosed containers
is exempt from §115.412(a)(1) of this title.
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