Cwea Collections Grade 1 Rated A+ Latest Update

Sewer maintenance vehicles are -️️ difficult to maneuver At low concentrations, hydrogen sulfide smells like -️️ Rotten Eggs which safety hazard in a collection system operations can be detected by an insturment? - ️️ Toxic Gases What must be checked first before entering a manhole? -️️ Proper barricades or warning devices around manhole. When should field crews use signs and cones? -️️ When over half the street is blocked. The different zones of traffic control include -️️ buffer Elements of defensive driving include -️️ having your vehicle under control The primary function of an entry supervisor is to -️️ maintain overall saftey of permited confied space operations What should be the alarm set point for oxygen in an atmospheric monitoring/testing device? - ️️ 19.5% Warning,caution,danger,on a label means -️️ Hazardous