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Legally responsible officals are required to report catagory 1 sanitary sewer
overflows: - 🧠ANSWER ✔✔Within two hours
When testing a manhole for explosive gases when should the first test be
made? - 🧠ANSWER ✔✔Before removing the manhole cover
When setting up to ventilate a manhole,the air inlet should be how many
feet above street level? - 🧠ANSWER ✔✔2.0 feet
Which chemical may be used for odor control in a sewer system? -
🧠ANSWER ✔✔Hydrogen peroxide
A category 2 is: - 🧠ANSWER ✔✔Any sso which is not a category 1
, Which tool would you use for cleaning under a pipe, or hard dirt near a
pipe? - 🧠ANSWER ✔✔Miner's pick
When pouring a concrete slab, which of the following tools is used to finish
the concrete? - 🧠ANSWER ✔✔Trowel
How can the velocity of water flowing in a sewer be estimated? -
🧠ANSWER ✔✔Measuring the time it takes for the dye to be carried by the
wastewater between the two manholes
When a grade conflict exist between a water main and a sewer main, which
of the following is the best solution? - 🧠ANSWER ✔✔Have the water main
adjusted and hold the grade on the sewer main
A source of infiltration in a collection is: - 🧠ANSWER ✔✔Broken pipe joints
Pipe materials that are the least susceptible to corrosion by acids formed
from gases generated in a sewer is: - 🧠ANSWER ✔✔VCP
Liners are installed in sewers to correct problems caused by: - 🧠ANSWER
✔✔Infiltration
"Schedule 40" refers to: - 🧠ANSWER ✔✔Wall thickness