This document consists of three test methods that the Environmental Protection Agency believes have a wider range of application as written than the reference methods promulgated by the Agency in the course of developing national performance standards for specific source categories. While these three methods do not contain source specific application instructions, they can, with proper consideration as alternate or screening methods, produce results that in many instances are adequate for determining compliance. The methods are 'General Measurement of Total Gaseous Organic Compound Emissions Using a Flame Ionization Analyzer,' 'Determination of Selected Volatile Organic Emissions by the Adsorption Collection Technique,' and 'Approximate Determination of Selected Volatile Organic Emissions Using Detector Tubes'.