We, the EPA, are approving a revision to the New Mexico State Implementation Plan (SIP) that contains the transportation conformity rule for Albuquerque/Bernalillo County. The conformity rules assure that in air quality nonattainment or maintenance areas, projected emissions from transportation plans and projects stay within the motor vehicle emissions ceiling in the SIP. The transportation conformity SIP revision enables the Albuquerque/Bernalillo County Air Quality Control Board (AQCB) to implement and enforce the Federal transportation conformity requirements in the Albuquerque/Bernalillo County area level per 40 CFR part 51, subpart T and 40 CFR part 93, subpart A--Conformity to State or Federal Implementation Plans of Transportation Plans, Programs, and Projects Developed, Funded or Approved Under Title 23 U.S.C. or the Federal Transit Laws. Our approval action streamlines the conformity process and allows direct consultation among agencies at the local levels. Our final approval action is limited to 40 CFR part 51, subpart T and 40 CFR part 93, subpart A (Transportation Conformity). We approved the SIP revision sent under 40 CFR part 51, subpart W (conformity of general Federal actions) on September 13, 1996 (61 FR 48407). We approve this SIP revision under sections 110(k) and 176 of the Clean Air Act (Act). We have given our rationale for approving this SIP revision in this action.