1. Clark County CO and PM 10 SIP Status Department of Air Quality and Environmental Management May 11, 2004

2. Clark County’s Current CO SIP Status * U.S. EPA is currently working on responses to public comments * Final approval is estimated by the U.S. EPA by Fall 2004

3. Clark County’s Current PM 10 SIP Status * U.S. EPA signed the notice of final approval on May 3, 2004 * Publication in the Federal Register within 30 days

4. Clark County’s Current PM 10 SIP Status Work Underway: * Reasonable Further Progress Report * Inventory of vacant land and private unpaved roads * Construction activities inventory * Refine emissions factors for vacant land

5. Clark County’s Current PM 10 SIP Status Work Underway : * Paved road PM 10 emissions measurements by vehicle based detection units * Paved road PM 10 emissions factor and reservoir depletion/recharging study (RTC) * Attainment demonstration modeling for BLM boundary expansion

6. Clark County’s Current PM 10 SIP Status Work Underway: * Completion of the Natural Events Action Plan * Independent audit of the PM 10 Monitoring Network (PM 10 Saturation Study)

7. Clark County’s Current PM 10 SIP Status The Future: * Attainment of the 24-Hour Standard by 2006 * Maintenance Plan and Redesignation Request

8. QUESTIONS? Please contact: The Department of Air Quality and Environmental Management (DAQEM): (702) 455-5942