Thermal sand reclamation systems (two examples are pictured above and below) heat sand additives to combustion and separate the remaining fines from reusable sand particles.


Equipment owners or operators subject to this rule must notify the EPA administrator no later than 30 days after construction of a unit that falls within the scope of the regulation and within 15 days of initial startup. Changes that can affect emissions also must be reported. To comply with the emissions monitoring requirements, facilities must install continuous opacity monitoring systems (COMS) or apply to EPA for approval of an alternative monitoring method. Te emission standards for par- ticulate matter (PM) establish limits of 0.092 g/dscm (0.040 gr/dscf) for calciners and dryers in series, and a PM limit of 0.057 g/dscm (0.025 gr/dscf) for dryers. “The rule establishes a 10% opac-


ity limitation unless emissions are discharged through a wet scrubbing control device,” reported Bryant Esch, environmental coordinator, Waupaca Foundry, Waupaca, Wis. He and Dan Oman, P.E., Haley &


34 | MODERN CASTING June 2013


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