Q85. Is the use of Subpart C tiers required after 2010 and is it acceptable to use the best available monitoring provisions under Subpart A beyond 2010?

A85. Yes, the use of Subpart C Tiers is required after 2010. The use of best available monitoring methods as described in Subpart A may not be extended beyond the end of 2010 except for units subject to subpart P (Hydrogen Production), subpart X (Petrochemical Production), or subpart Y (Petroleum Refineries).  Note that there may be subpart specific BAMM requirements not included in subpart A. Note, however, that this timing does not apply to subpart-specific BAMM requirements. (See §98.3(d)(2)(iii) and §98.3(j).)

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Source: This question and answer was derived from a Legacy FAQ, revised by M. Hannan, 1/23/2013

Approval / Publishing History: Version 2, approved by L. Grogan-McCulloch, 2/13/2013

Expiration: none

Relevant Subparts:  Subpart C
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