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Air & Radiation > TTNWeb - Technology Transfer Network > National Ambient Air Quality Standards > Sulfur Dioxide > Technical Resources

Sulfur Dioxide (SO₂) — NAAQS Implementation:

Technical Resources

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File Description	File Date	File Types
Seitz Memo – Redesignation of Sulfur Dioxice Nonattainment Areas in the Absence of Monitored Data	10/18/2000
Meyers Memo – Section 107 Designation Policy Summary	04/21/1983

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