In implementing the July 1, 2004 rulemaking, how are areas with approved conformity SIPs affected?
On November 18, 2004, EPA provided Conformity SIP Guidance. This guidance will help areas that have approved conformity SIPs know which provisions of the July 1, 2004, conformity rule amendments apply immediately and which provisions cannot apply until conformity SIPs are revised. It also includes information on other aspects of conformity SIPs. It is available at: http://www.epa.gov/otaq/stateresources/transconf/policy.htm.