Will be constantly swimming and be exposed to water, chlorine, and other chemicals related to pool maintenance, cleaning agents and disinfectants, stinging insects, animals/rodents, slippery surfaces, heat, sun, and other summer weather conditions; loud noises including whistles, excited voices and children crying/yelling. Knowledge of: applicable City of Yakima and Parks and Recreation policies and procedures; the philosophy, principles, and practices of American Red Cross aquatics instructional methods; the methods, techniques, materials, equipment, and safety precautions associated with teaching and operating aquatic program; the routine maintenance of commercial pool facilities.