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San Joaquin Valley Air Pollution Control District The SJVAPCD is the agency primarily responsible for assuring that national and state ambient air quality standards are not exceeded and that air quality conditions are maintained in the SJVAB. Responsibilities of the SJVAPCD include the preparation of plans for the attainment of ambient air quality standards,adoption and enforcement of rules and regulations concerning sources of air pollution,issuing permits for stationary sources of air pollution,inspecting stationary sources of air pollution and responding to citizen complaints,monitoring ambient air quality and meteorological conditions, and implementing programs and regulations required by the CAA and the CCAA. In an attempt to achieve national and state ambient air quality standards and maintain air quality, the SJVAPCD has completed the 1994 Ozone Attainment Demonstration Plan(amended in 2001), 1997 PMro Attainment Demonstration Plan, 1997-1999 PMto Progress Report, 2000 Ozone Rate of Progress Report, 2000 Annual Progress Report, and the 2000 Triennial Plan(SJVAPCD 2001). The SJVAPCD has developed the Guide for Assessing and Mitigating-Air Quality Impacts(SJVAPCD 1998), which it applies to projects within the SVAB under SJVAPCD Regulation VIII. The guide sets forth Basic, Enhanced, and Additional Control Measures that SJVAPCD requires be implemented during the construction of all projects in the SJVAB to control dust and other emissions during construction. The SJVAPCD considers compliance with these measures as sufficient to avoid significant construction emission impacts within the SJVAB. These control measures are listed below. • Basic Control Measures(to be implemented at all construction sites) • All disturbed areas,including storage piles,which are not being actively used for construction purposes, shall be effectively stabilized of dust emissions by applying water or chemical stabilizer/suppressant or covered with a tarp or other suitable cover or vegetative ground cover. All on-site unpaved roads and off-site unpaved access roads shall be effectively stabilized of dust emissions by applying water or chemical stabilizer/suppressant. • All land clearing,grubbing,scraping,excavation,land leveling,grading, cut and fill, and demolition activities shall be effectively controlled of fugitive dust emissions using application of water or by presoaking. • All exterior surfaces of buildings shall be wetted during demolition. • When materials are transported off-site, all material shall be covered, or effectively wetted to limit visible — dust emissions,or at least 6 inches of freeboard space from the top of the container shall be maintained. • All operations shall limit or expeditiously remove the accumulation of mud or dirt from adjacent public streets at the end of each workday. (The use of dry rotary brushes is expressly prohibited except where preceded or accompanied by sufficient wetting to limit visible dust emissions. Use of blower devices is expressly forbidden.) • Following the addition of materials to, or the removal of materials from,the surfaces of outdoor storage piles,piles shall be effectively stabilized of fugitive dust emissions using sufficient water or chemical stabilizer/suppressant. • Trackout shall be immediately removed when it extends 50 or more feet from the site and at the end of each workday. Any site with 150 or more vehicle trips per day shall prevent carryout and trackout. EDAW College Park at Mountain House Specific Plan III Draft EIR — Air Quality 4.12-14 San Joaquin County