The following exemptions apply in the Beaumont-Port Arthur,
Dallas-Fort Worth, El Paso, and Houston-Galveston-Brazoria areas and
in Bastrop, Bexar, Caldwell, Comal, Gregg, Guadalupe, Hays, Nueces,
Travis, Victoria, Williamson, and Wilson Counties.
(1) Any cold solvent cleaning system is exempt from
the provisions of §115.412(1)(B) of this title (relating to Control
Requirements) 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(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(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(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 less than 550 pounds
in any consecutive 24-hour period are exempt from the provisions of §115.412
of this title.
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