CWEA Environmental Compliance
1. Prohibited discharges from industrial create a fire or explosion hazard in the sewer
users to POTWs, as stipulated in the or POTW.
Clean Water Act, are pollutants that:
2. "MSDS" is an acronym for what? Material Safety Data Sheet
3. Safety hazards associated with hydrogen toxic gasses
sulfide in sewer systems include:
4. Lead acetate paper is used to determine hydrogen sulfide.
the presence of:
5. The following type of flow measuring de- Venturi.
vice can be installed in a pipe flowing full:
6. What kind of container and preservative Glass is the best option. Plastic containers are
is required for samples to be analyzed more susceptible to oils and greases sticking
for oil and grease? to the inside. If sample analysis is delayed, the
sample must be preserved to a pH <2 with
hydrochloric (HCl) or sulfuric acid (H2SO4).
Samples must be kept cool after collection (d-
6°C) and packed with a sufficient amount of
ice.
7. A chain-of-custody form: is the ability to trace sample possession and
handling from collection through analysis.
8. The BOD determination is an empiri- The BOD test measures how much oxygen tiny
cal test in which standardized laboratory water creatures need to break down the stuff
procedures are used to: that pollutes the water, like dead plants or
waste from factories. If the water has a lot of
this pollution, these creatures will use up more
oxygen to clean it up, which can make it harder
, CWEA Environmental Compliance
for fish and other animals to live in the water. If
the water is cleaner, they won't need as much
oxygen.
9. A confined space is one that: is large enough to enter and work in, has a
restricted entry/exit, and is not meant for con-
tinuous occupancy.
10. Industrial plants producing wastes with breweries.
a high suspended solids content include:
11. Whenever an inspector or sampling Two
technician is in a manhole, how many
people should there be above to respond
in the event of an emergency?
12. A major pollutant of concern from a copper.
printed circuit board shop is:
13. To find the proper protective gear to use check the MSDS for chemicals used.
while inspecting an area where a haz-
ardous chemical is used, you would:
14. Why are gasoline and volatile solvents They can produce an explosion hazard.
objectionable when present in a sewer?
15. When inspecting a plating shop, person- eye goggles or face shield, chemical resistant
al protective equipment would include: gloves, and overalls.
16. A solution with a pH of 5 has a concentra- 100 times higher
tion of hydrogen ions that is how many
times higher than a solution with a pH of
7?
, CWEA Environmental Compliance
17. High pH wastewater is neutralized by H2SO4 / sulfuric acid
adding:
18. When working in the street, signs and over half of the street is blocked.
cones are needed when:
19. What is the danger of asphyxiation set 19.5 percent
point for oxygen on an atmospheric
monitor?
20. A common technology to recover chem- ion exchange.
icals from rinse water include:
21. Is an essential part of any sampling qual- Proper cleaning techniques for sampling
ity control methodology: equipment
22. What are the types of stormwater pollu- Sediment, BOD, Nutrients
tion?
23. How often must Significant industrial Once a year
users (SIUs) be inspected?
24. A solution of ferrous chloride used at a 399 grams per liter
pretreatment facility contains 30 percent
ferrous chloride and has a density of 1.33
g/mL. How many grams of ferrous chlo-
ride are in one liter of the solution?
25. Sodium hydroxide is commonly referred caustic soda.
to as:
26. Which of the following does an ultrafil- suspended solids.
tration system remove from wastewater?
, CWEA Environmental Compliance
27. Low pH wastewater is neutralized by Sodium hydroxide NaOH
adding:
28. A POTW must retain Industrial User 3 years
records for a minimum of:
29. The Federal Act that introduced the con- Resource Conservation and Recovery Act
cept of cradle to grave manifesting for (RCRA).
hazardous waste products is:
30. Waste discharge regulations can be con- pH and temperature.
centration- or mass-based except for:
31. New Categorical Dischargers must sub- 90 days
mit a Baseline Monitoring Report to
the POTW control authority prior to the
planned commencement of discharge by
at least:
32. In a normally distributed population of 68 - The empirical rule, also known as the
sampling data, what percent of the data 68-95-99.7 rule, is a statistical rule which
points will fall within one standard devi- states that for a normal distribution:
ation? Approximately 68% of the data falls within one
standard deviation (σ) of the mean (μ).
Approximately 95% of the data falls within two
standard deviations of the mean.
Approximately 99.7% of the data falls within
three standard deviations of the mean.
33. In open channel flow measurement, the measuring structure that contains the water.
term "primary element" is used to de-
note the:
1. Prohibited discharges from industrial create a fire or explosion hazard in the sewer
users to POTWs, as stipulated in the or POTW.
Clean Water Act, are pollutants that:
2. "MSDS" is an acronym for what? Material Safety Data Sheet
3. Safety hazards associated with hydrogen toxic gasses
sulfide in sewer systems include:
4. Lead acetate paper is used to determine hydrogen sulfide.
the presence of:
5. The following type of flow measuring de- Venturi.
vice can be installed in a pipe flowing full:
6. What kind of container and preservative Glass is the best option. Plastic containers are
is required for samples to be analyzed more susceptible to oils and greases sticking
for oil and grease? to the inside. If sample analysis is delayed, the
sample must be preserved to a pH <2 with
hydrochloric (HCl) or sulfuric acid (H2SO4).
Samples must be kept cool after collection (d-
6°C) and packed with a sufficient amount of
ice.
7. A chain-of-custody form: is the ability to trace sample possession and
handling from collection through analysis.
8. The BOD determination is an empiri- The BOD test measures how much oxygen tiny
cal test in which standardized laboratory water creatures need to break down the stuff
procedures are used to: that pollutes the water, like dead plants or
waste from factories. If the water has a lot of
this pollution, these creatures will use up more
oxygen to clean it up, which can make it harder
, CWEA Environmental Compliance
for fish and other animals to live in the water. If
the water is cleaner, they won't need as much
oxygen.
9. A confined space is one that: is large enough to enter and work in, has a
restricted entry/exit, and is not meant for con-
tinuous occupancy.
10. Industrial plants producing wastes with breweries.
a high suspended solids content include:
11. Whenever an inspector or sampling Two
technician is in a manhole, how many
people should there be above to respond
in the event of an emergency?
12. A major pollutant of concern from a copper.
printed circuit board shop is:
13. To find the proper protective gear to use check the MSDS for chemicals used.
while inspecting an area where a haz-
ardous chemical is used, you would:
14. Why are gasoline and volatile solvents They can produce an explosion hazard.
objectionable when present in a sewer?
15. When inspecting a plating shop, person- eye goggles or face shield, chemical resistant
al protective equipment would include: gloves, and overalls.
16. A solution with a pH of 5 has a concentra- 100 times higher
tion of hydrogen ions that is how many
times higher than a solution with a pH of
7?
, CWEA Environmental Compliance
17. High pH wastewater is neutralized by H2SO4 / sulfuric acid
adding:
18. When working in the street, signs and over half of the street is blocked.
cones are needed when:
19. What is the danger of asphyxiation set 19.5 percent
point for oxygen on an atmospheric
monitor?
20. A common technology to recover chem- ion exchange.
icals from rinse water include:
21. Is an essential part of any sampling qual- Proper cleaning techniques for sampling
ity control methodology: equipment
22. What are the types of stormwater pollu- Sediment, BOD, Nutrients
tion?
23. How often must Significant industrial Once a year
users (SIUs) be inspected?
24. A solution of ferrous chloride used at a 399 grams per liter
pretreatment facility contains 30 percent
ferrous chloride and has a density of 1.33
g/mL. How many grams of ferrous chlo-
ride are in one liter of the solution?
25. Sodium hydroxide is commonly referred caustic soda.
to as:
26. Which of the following does an ultrafil- suspended solids.
tration system remove from wastewater?
, CWEA Environmental Compliance
27. Low pH wastewater is neutralized by Sodium hydroxide NaOH
adding:
28. A POTW must retain Industrial User 3 years
records for a minimum of:
29. The Federal Act that introduced the con- Resource Conservation and Recovery Act
cept of cradle to grave manifesting for (RCRA).
hazardous waste products is:
30. Waste discharge regulations can be con- pH and temperature.
centration- or mass-based except for:
31. New Categorical Dischargers must sub- 90 days
mit a Baseline Monitoring Report to
the POTW control authority prior to the
planned commencement of discharge by
at least:
32. In a normally distributed population of 68 - The empirical rule, also known as the
sampling data, what percent of the data 68-95-99.7 rule, is a statistical rule which
points will fall within one standard devi- states that for a normal distribution:
ation? Approximately 68% of the data falls within one
standard deviation (σ) of the mean (μ).
Approximately 95% of the data falls within two
standard deviations of the mean.
Approximately 99.7% of the data falls within
three standard deviations of the mean.
33. In open channel flow measurement, the measuring structure that contains the water.
term "primary element" is used to de-
note the:
