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In 1976, the Legislature established the Vehicle
Emissions Inspection Program (Program) in the Phoenix and Tucson
metropolitan areas to reduce emissions and improve air quality. The Program
is a centralized vehicle emissions testing service provided by an
independent contractor under the direction of the Department of
Environmental Quality (Department). The Program has a good overall vehicle
emissions quality control and monitoring framework. However, several
activities are performed more frequently than required by the federal
government or than best practices would recommend. The Department should
evaluate whether it can reduce some of these activities and should redirect
some resources to address other aspects of the monitoring process, including
followup on identified problems.
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