EPA is revising the February 26, 2007 mobile source air toxics rule's requirements that specify the benzene control technologies that qualify a refiner to generate early benzene credits. This revision allows another specific benzene control technology, benzene alkylation, in addition to the four operational or technological changes that the 2007 rule currently allows. This revision also includes a general provision that allows a refiner to submit a request to EPA to approve other benzene-reducing operational changes or technologies for the purpose of generating early credits. This revision is effective on May 12, 2008, without further notice, unless EPA receives adverse comment by April 11, 2008. POC is Christine Brunner, Office of Transportation and Air Quality, Assessment and Standards Division, Environmental Protection Agency, 2000 Traverwood, Ann Arbor, MI 48105; telephone number: (734) 214-4287; fax number: (734) 214-4816; e-mail address: brunner.christine@epa.gov (Federal Register: March 12, 2008 [Rules and Regulations], Page 13132-13136).