CWEA LAB ANALYST GRADE I VOCAB EXAM
1. 40 CFR 121- 124: The federal storm water regulations for the permitting of
municipalities and industries. Regulations define storm water terms, permitting,
inspecting, and sampling measurements
2. 40 CFR 136: The regulations for sampling preservation and analyses of water,
wastewater, and solid waste
3. 40 CFR 403: The federal regulations defining the elements of a pretreatment
program, prohibited discharges, and the approval process for establishing a pre-
treatment program
4. Acid: A compound which liberates hydrogen ions and has a pH below 7
5. Alkalinity: The measurement of a sample's capacity to neutralize acid
6. Approval Authority: The agency determining whether a pretreatment program
contains the necessary elements to meet the intent of the Act
7. Atomic Weight: The sum of the number of protons and the number of neutrons in
the nucleus of an atom; atomic weights of elements are found on the periodic table
8. Base: A compound which liberates hydroxide ions and have a pH above 7
9. Biochemical Oxygen Demands (BOD): The quality of oxygen utilized in the
biochemical oxidation of organic matter under standard lab procedures for 5 days at
20 °C, usually expressed as a concentration (mg/L). BOD measurements are used
to indicate the organic "strength" of wastewater
10. Biological Treament: A waste treatment process by which bacteria and other
microorganisms break down complex organic or inorganic (ie ammonia) materials
into simple, nontoxic, more stable compounds
11. Categorical Industrial User (CIU): An industrial user (refer to IU) that is con-
ducting processes subject to a categorical standard promulgated by the US EPA
12. centrifugal pumps: pumps using centrifugal force to convey liquid. Discharge
will vary according to inlet and discharge pressure
13. Chain-of- Custody: A legal record (which may be a series of records) of each
person who had possession of an environmental sample, from the person releasing
the sample, to the person who collected the sample, to the person who analyzed the
sample in the laboratory, to the person who witnessed the disposal of the sample
14. Chemical Oxygen Demand (COD): The amount of oxygen (expressed in mg/L)
consumed from the oxidation of pollutants during a specific test
As such, COD is a measure of the oxygen-consuming capacity of the pollutant
1 B/ B
8
, present in wastewater. The results of the COD test are not necessarily related to the
B B B B B B B B B B B B B B
BOD, because the chemical oxidant responsible for utilizing the oxygen may
B B B B B B B B B B B
react with substances which bacteria do no stabilize.
B B B B B B B B
15. Cipolletti Water: A trapezoidal sharp-crested weir for measurement of
B B B B B B B B
liquid discharge in open channels
B B B B B
2 B/ B
8
1. 40 CFR 121- 124: The federal storm water regulations for the permitting of
municipalities and industries. Regulations define storm water terms, permitting,
inspecting, and sampling measurements
2. 40 CFR 136: The regulations for sampling preservation and analyses of water,
wastewater, and solid waste
3. 40 CFR 403: The federal regulations defining the elements of a pretreatment
program, prohibited discharges, and the approval process for establishing a pre-
treatment program
4. Acid: A compound which liberates hydrogen ions and has a pH below 7
5. Alkalinity: The measurement of a sample's capacity to neutralize acid
6. Approval Authority: The agency determining whether a pretreatment program
contains the necessary elements to meet the intent of the Act
7. Atomic Weight: The sum of the number of protons and the number of neutrons in
the nucleus of an atom; atomic weights of elements are found on the periodic table
8. Base: A compound which liberates hydroxide ions and have a pH above 7
9. Biochemical Oxygen Demands (BOD): The quality of oxygen utilized in the
biochemical oxidation of organic matter under standard lab procedures for 5 days at
20 °C, usually expressed as a concentration (mg/L). BOD measurements are used
to indicate the organic "strength" of wastewater
10. Biological Treament: A waste treatment process by which bacteria and other
microorganisms break down complex organic or inorganic (ie ammonia) materials
into simple, nontoxic, more stable compounds
11. Categorical Industrial User (CIU): An industrial user (refer to IU) that is con-
ducting processes subject to a categorical standard promulgated by the US EPA
12. centrifugal pumps: pumps using centrifugal force to convey liquid. Discharge
will vary according to inlet and discharge pressure
13. Chain-of- Custody: A legal record (which may be a series of records) of each
person who had possession of an environmental sample, from the person releasing
the sample, to the person who collected the sample, to the person who analyzed the
sample in the laboratory, to the person who witnessed the disposal of the sample
14. Chemical Oxygen Demand (COD): The amount of oxygen (expressed in mg/L)
consumed from the oxidation of pollutants during a specific test
As such, COD is a measure of the oxygen-consuming capacity of the pollutant
1 B/ B
8
, present in wastewater. The results of the COD test are not necessarily related to the
B B B B B B B B B B B B B B
BOD, because the chemical oxidant responsible for utilizing the oxygen may
B B B B B B B B B B B
react with substances which bacteria do no stabilize.
B B B B B B B B
15. Cipolletti Water: A trapezoidal sharp-crested weir for measurement of
B B B B B B B B
liquid discharge in open channels
B B B B B
2 B/ B
8
