Modification

Modification or Modified HMIWI means any change to a HMIWI unit after April 6, 2010, such that:
(1) The cumulative costs of the modifications, over the life of the unit, exceed 50 per centum of the original cost of the construction and installation of the unit (not including the cost of any land purchased in connection with such construction or installation) updated to current costs, or
(2) The change involves a physical change in or change in the method of operation of the unit which increases the amount of any air pollutant emitted by the unit for which standards have been established under section 129 or section 111.

Source

40 CFR § 62.14490


Scoping language

None
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