Section 207.502  Methods for Determining Emissions Reductions

a)         Emission rates from both retired and replacement vehicles must be either measured (measure/measure method), modeled (model/model method), or a combination of measurement and modeling (measure/model method).  The vehicle scrappage sponsor or manager shall propose the measurement and/or modeling techniques to be used in the applicable vehicle scrappage plan.

b)         Modeled emission rates for retired and replacement vehicles must be calculated using the USEPA MOBILE model, as applied in accordance with USEPA guidance for MOBILE model use for vehicle scrappage activities.

c)         The IM240 Test shall be used for any measured VOM emission rate determinations.

d)         The remaining useful life of retired vehicles is limited to three years.