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703.8 Wet-Hood Exhaust Scrubber Systems
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Where wet-hood exhaust scrubber systems are used, they shall incorporate a water recirculation system. The makeup water supplies for such systems shall be metered in accordance with Section 705.1.
703.8.1 Washdown Systems
Hoods incorporating washdown or rinsing systems for perchloric acid and similar chemicals shall utilize self-closing valves. Such systems shall be designed to drain automatically after each washdown process has been completed.
703.8.2 Water Sources
Where suitable alternate onsite nonpotable water or municipal reclaimed water is available, makeup water supplies to the recirculation system of wet-hood exhaust scrubbers shall utilize alternate onsite nonpotable water or municipal reclaimed water of a water quality appropriate for the application.
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Related Code Sections
703.8 Water Resource Conservation, Quality and Efficiency, Wet-Hood Exhaust Scrubber Systems
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510.6.3 Exhaust Systems, Hoods Required
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