The Industrial Environmental Research Laboratory (IERL), in support of the Office of Air Quality Planning and Standards Volatile Organic Compounds (VOC) Program, has established a project for design, construction and operation of four pilot emission control units which will be transportable and represent state-of-the-art technology. The control technologies represented in the pilot systems will be (1) carbon adsorption with regeneration, (2) thermal incineration with heat recovery, (3) catalytic incineration with heat recovery, and (4) condensation. It is anticipated that the four systems will be used on actual VOC emissions from industrial processes for definition of control VOC emissions from industrial processes for definition of control feasibility, efficiencies, and to provide data for system scale-up. Since existing designs for small adsorption or incineration systems are not flexible enough to meet the needs of these applications, the pilot systems will be designed to meet the specifications outlined in this report. The designs for these pilot systems include provisions for collecting all of the data necessary to evaluate the performance of the system and to provide a sound design basis for a full-scale system.