The Agency carries on to see that this technique utilizing the CAMx model to evaluate contributions from upwind states to downwind spots is reliable. The agency has employed CAMx routinely in former detect and remark transportation rulemakings To guage contributions relative on the one per cent threshold for both ozone and PM2.5. In truth, in the i

87 FR 31443, 31457. The EPA evaluated California's qualitative thought of exclusive topographic components which could influence the transportation of emissions from resources throughout the condition to downwind receptors in Colorado and Arizona. The EPA concluded that the State's arguments tend not to existing enough evidence that identified as i