Safety
The presence of dangerous gases in confined spaces can only be detected by using:
properly calibrated atmospheric testing and monitoring equipment.
How many renewal hour are required for 2 A licenses
16
You have a black, dark brown foam in the aeration basin, what is one possible cause?
Old sludge
what is the hold time for pH
15 minutes or none
What is the common name for the material that is skimmed from the surface of a primary clarifier?
Scum
What compound is responsible for rotten eggs smell?
Hydrogen Sulfide
How much does it cost to renewal a licensed
$46 per license
If you have old sludge, how do you correct the problem?
Increase your wasting
What type of sampling container do you use for sampling DO
Glass
When was the Safe Water Drinking Act Enacted
1974
What extinguisher is for an electrical fire
Class C
Do you have to have an operators license to pull a sample
no
If you have bubbles coming out of your clarifier, what could be a possible problem
Dentrification is happing in the clarifier
What temperature must the auto sampler be kept at
6 celcius
How much does 1 gallon of water weigh
8.34 lbs
What decibel is considered dangerous and needs hearing protection
85
How long must Wastewater records be kept
3 years
Aerobic organisms require what to survive
Oxygen
What is the preservative for ecoli
Describe nitrification
Ammonia to Nitrite
How long must you keep canceled confined space entry permits?
1 year
A Superintend of a discharging lagoon of 1000 people needs to hold what license as a minimum?
C
Rotifers are a sign of what sludge?
Old
How often must an autosampler pull a sample?
1 - 2 hours
What is the same thing as mg/L
Part per million