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• A map of the County is prepared that indicates crop and <br /> land use patterns as well as specific potential contami - <br /> nation sources. <br /> • Small systems are grouped into three categories: <br /> - Small community water systems; <br /> State small water systems; <br /> Non-community water systems. <br /> • Small water systems within each category are prioritized <br /> and based on the size of the system and its proximity to <br /> known contamination sources. <br /> • Suspect small water systems are sampled and the water <br /> analyzed for volatile organics and agricultural chemi - <br /> cals. Using EPA's 601 and 602 procedures, 135 wells were <br /> tested for full organic contaminants. <br /> In Appendix G is a summary of inspections performed under this water <br /> program. <br /> 13.7 SAN JOAQUIN COUNTY AIR POLLUTION CONTROL PROGRAMS <br /> The County Air Pollution Control District is a division of the Local <br /> Health District. The Air Pollution Director is responsible for the <br /> monitoring of emissions from: <br /> . • incineration processes, including co-generationeneration Indus- <br /> tries. <br /> • Chemical treatment processes classified as "open sys- <br /> tems. " <br /> • Hazardous waste storage and treatment facilities. <br /> • Aeration of soil contaminated with volatile organic <br /> wastes, generally used as a treatment method for soil <br /> contamination resulting from leaking underground fuel <br /> tanks. <br /> The Air Pollution Control Officer investigates health effects result- <br /> ing from exposures to hazardous vapors and gases from industrial <br /> operations. <br /> PJ9 9390502E.00D 13-7 Rev. 1 11/09/88 <br />