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On July 18, 2016, the USEPA took final action to determine that the San Joaquin Valley area has attained the 2008 1-hour ozone National Ambient Air Quality Standard (NAAQS).  The attainment determination is based on certified air quality data collected throughout San Joaquin Valley between 2012 and 2014.  Despite the formal determination by the US EPA, the San Joaquin Valley Air Pollution Control District (SJVAPCD) Federally Mandated Ozone Nonattainment Fee, stipulated under SJVAPCD Rule 3170, will remain effective until SJVAPCD demonstrates to the USEPA that the area will maintain the 1-hour ozone NAAQS for 10 years.  The attainment status is a positive milestone for the San Joaquin Valley area, however many counties in San Joaquin Valley are still classified as extreme non-attainment for the 2008 8-hour ozone NAAQS.  The 1-hour ozone attainment status is effective August 17, 2016.