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CWEA Collection Systems Maintenance Exam 2025 Questions and Answers Why are gasoline and volatile solvents objectionable when present in a sewer? - -Answer --They produce an explosion hazard You should never attempt to install, maintain, repair or replace electrical equipment panels, controls, wiring or circuits unless - --Answer --You know what you are doing, are qualified and are authorized What are the different areas of traffic zones? - --Answer --Advance Warning Area, Transition Area, Activity Area (buffer space and work space), Termination Area. Could be 4 or 5, justify your answer on the test! why should hydrogen sulfide be controlled? - --Answer --to protect from corrosion and odors Personnel entering a Permit Required Confined Space must have the following training - --Answer --entry and rescue To find protective gear before application of a product, you should: - -Answer --look at the MSDS ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1