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death percentage of rescuers ? Correct Answers 60%
how long should water set when sampling lead and copper ? Correct
Answers motionless for 6 hours
whats the first safety check when entering a chlorine room? Correct
Answers turn on exhaust fan
whats the first safety check when entering a chlorine room? Correct
Answers turn on exhaust fan
what is the minimum width of trench on both sides of pipe? Correct
Answers 12''
how often should a titrate sample be stirred? Correct Answers
continuosly
what would you use to dose out 3.7ml of solution? Correct Answers
pipet
what happens under 6ph? Correct Answers water is corrosive
, what is false about pvc? Correct Answers pvc will not take a heavy blow
in cold water
with no friction loss a 6'' water main puts out? Correct Answers more
than 2-4'' water mains
what kind of meter for high and low flow? Correct Answers compound
meter
boil water notice is sent out if what? Correct Answers constant low
pressure/bad samples/water off continuosly
total dynamic is everything involved? Correct Answers head,friction,all
restrictive forces
how do you sample coliform? Correct Answers membrane filter
what happens due to cavitation? Correct Answers destruction of shaft
housing/impeller
what do you do first after laying a new main? Correct Answers backfill
first
how long must you save data on bacteria/chemical sample? Correct
Answers 5 years bacteria