This module, one of 25 on vocational education training for careers in environmental health occupations, contains self-instructional materials on obtaining measurements of stationary environmental noise sources. Following guidelines for students and instructors and an introduction that explains what the student will learn are three lessons: (1) identifying and characterizing stationary environmental noise sources, (2) checking the operational readiness of a Type 2 sound level meter and sound level calibrator, and (3) making screening survey and sound level measurements of noise produced by stationary sound sources. Each lesson contains objectives, recommended methods and locations for practice, performance criteria, equipment and supplies to perform a task, detailed step-by-step instructions for learning a task, and performance exercises. Three performance tests cover identifying and characterizing environmental noise sources by land use zone, checking the operational readiness of the SLM and calibrator, and making screening survey sound level measurements. (CT)