Nonmetallic Mineral Processing Plants Frequently …
equipment subject to EPA's Subpart OOO must meet the following standards: 1. Visible emissions from crushers manufactured between 8/31/1983 4/22/2008 – shall not exceed 15% opacity on a six-minute block average basis. 2. Visible emissions from crushers manufactured after 4/22/2008 shall not exceed 12% opacity on a six-minute block …
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