stdxpn.txt

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             Texas Air Control Board
       Austin                       Texas
                    Interoffice

To:  Section Chiefs
     Permit Engineers
From:  Lawrence E. Pewitt, P.E., Director, Permits Division  
Date:  September 10, 1986
Subject:  Total Property Emissions - Standard Exemptions under
          Rule 116.6(a)(2) now 116.211(a)(3)

Regulation VI, Rule 116.6(a)(2) now 116.211(a)(3), states that
a standard exemption cannot be used if emissions from the
property where the proposed facility is to be located will
exceed 250 tons per year (TPY) of carbon monoxide or nitrogen
oxides or 25 TPY of any other air contaminant unless at least
one facility at the property has been subject to public notice
and comment required by Rule 116.10 now 116.130.

This will be interpreted to consider only the emissions from
facilities claimed under standard exemptions.  If emissions
from the property for facilities constructed under standard
exemptions will exceed 250 TPY of carbon monoxide or nitrogen
oxides or 25 TPY of any other air contaminant then at least
one facility at the property must have been subject to public
notice according to permit or special permit public notice
procedures.

This does not change or alter any other requirements for
obtaining a standard exemption.  Actual emissions from
proposed facilities claimed under a standard exemption must
not exceed the 25/250 TPY level or the limit of any specific
standard exemption.

No standard exemption may be claimed if the construction
and/or modification will result in a major source or major
modification review for either nonattainment or Prevention of
Significant Deterioration permit requirements.

cc:  Regional Directors

Updated August 29, 1994