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U1 Test Questions And Answers
Observation wells are installed _____the excavation, while monitoring wells are installed _______the excavation. - Answer- Inside, Outside 
 
After piping areas are backfilled, _______psi air pressure may be maintained in the piping, provided no product has been in the piping. - Answer- 10 psi 
 
In traffic areas, ensure that the trench is sufficiently deep to permit _______inches of bedding and at least _____ inches of compacted backfill above piping. - Answer- 6, 18 
 
T or F - Flexible connec...