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Air Emission Measurement Center (EMC)

Method 21 - Volatile Organic Compound Leaks

Do you have questions about a Test Method, Performance Specification or Source Category? Find the EMC contact for your question in the EMC Directory.

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Method 21 Determination of Volatile Organic Compound Leaks 8-3-2017 (PDF)(7 pp, 299 K)
CFR Promulgated Test Method 21 Determination of Volatile Organic Compound Leaks.
Clarification Letter on Method 21 (PDF)(1 pg, 59 K, November 30, 2010)