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�. RECEIVED San Joaquin valley MAY 2 7 2005 Air Pollution Control District Community Development Dept. 4, 2005 Reference tt: N20050394 Raymond Hoo San Joaquin County Community Development Department Development Services Division 1810 East Hazelton Avenue Stockton, CA 95205 SUBJECT: PA-0400789 (SU) & PA-0400248 (ZR) APPLICATION TO CHANGE APROXIMATELY 27 ACRES OF FOUR PARCELS INTO 105 RESIDENTIAL LOTS, A SCHOOL SITE, AND A DETENTION BASIN. Dear Mr. Hoo: The San Joaquin Valley Air Pollution Control District (District) has reviewed the proposed projects and offers the following comments: The San Joaquin Valley's air quality has been designated nonattainment by the EPA and by the Air Resources Board (ARB) for 03 (ozone) and PM-10 (fine particulate matter, dust). The Federal Clean Air Act (CAA) and the California Clean Air Act require areas that are designated nonattainment to reduce emissions until standards are met. Based on the information provided, it appears that this project will have a less-than- significant impact on the ambient air quality. However, the construction phase of this project can generate emissions from the movement of soil, use of heavy equipment, bulk materials handling, asphalt paving and other related activities. As a result, this project is subject to District Regulation VIII (Fugitive Dust Prohibitions). The purpose of Regulation VIII is to reduce the amount of fine particulate matter (PM-10) entrained into the ambient air from man-made sources. Please be advised that the District's Governing Board approved amendments to Regulation VIII, Rules 8011-8061 and 8071-8081; respectively, that became effective on October 1, 2004. Of particular note are amendments to Rule 8021 (see section 6.3.1); the Dust Control Plan threshold has changed from 40.0 acres to 10.0 or more acres for residential sites. If a residential site is 1.0 to less than 10.0 acres, an owner/operator must provide written notification to the District at least 48 hours prior to his/her intent to begin any earthmoving activities (see section 6.4.1). The attached Compliance Assistance Bulleting (CAB) highlights many of the requirements contained within Regulation VIII. The CAB is not meant to be all inclusive, but it can be a useful compliance aid in the David L. Crow Executive Director/Air Pollution Control Otbcer Northern Region Office Central Region Office Southern Region Office 4230 Kiernan Avenue, Suite 130 1990 East Gettysburg Avenue 2700 M Street, Suite 275 Modesto, CA 95356-9322 Fresno, CA 93726-0244 Bakersfield, CA 93301-2373 (209) 557-6400 • FAX (209) 557-6475 (.559) 230-6000 • FAX (559) 230-6061 (661) 326-6900 • FAX (661) 326-6985 wevu.vallevair.org