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CWEA Collection Systems Maintenance Practice Questions for CWEA Grade 1 and 2 Tests
CWEA Collection Systems Maintenance 
Practice Questions for CWEA Grade 1 
 
and 2 Tests 
 
Why are gasoline and volatile solvents objectionable when present in a sewer? - They 
produce an explosion hazard 
 
You should never attempt to install, maintain, repair or replace electrical equipment panels, 
controls, wiring or circuits unless - You know what you are doing, are qualified and are 
authorized 
 
What are the different areas of traffic zones? - Advance Warning Area, Transition Area, 
Acti...