EPA Method 20

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EPA Method 20:
DETERMINATION OF NITROGEN OXIDES, SULFUR DIOXIDE, AND DILUENT EMISSIONS FROM STATIONARY GAS TURBINES

Summary:
In this method, NOx, O2 (or CO2), and SO2 are measured using the following methods found in appendix A to this part: (a) Method 1-Sample and Velocity Traverses for Stationary Sources. (b) Method 3A-Determination of Oxygen and Carbon Dioxide Emissions From Stationary Sources (Instrumental Analyzer Procedure). (c) Method 6C-Determination of Sulfur Dioxide Emissions From Stationary Sources (Instrumental Analyzer Procedure). (d) Method 7E-Determination of Nitrogen Oxides Emissions From Stationary Sources (Instrumental Analyzer Procedure).

Scope:
The use of Method 20 may be required by specific New Source Performance Standards, Clean Air Marketing rules, and State Implementation Plans and permits where measuring SO2, NOx, CO2, and/or O2 concentrations in stationary gas turbines emissions are required. Other regulations may also require its use.

Date Issued:
9/1/1986

	Examples:	8260 TO-15
	Examples:	Dioxin Mercury

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