CWEA LAB ANALYST GRADE I VOCAB
40 CFR 121- 124 - correct answer The federal storm water regulations for the permitting of
municipalities and industries. Regulations define storm water terms, permitting, inspecting, and
sampling measurements
40 CFR 136 - correct answer The regulations for sampling preservation and analyses of water,
wastewater, and solid waste
40 CFR 403 - correct answer The federal regulations defining the elements of a pretreatment
program, prohibited discharges, and the approval process for establishing a pretreatment
program
Acid - correct answer A compound which liberates hydrogen ions and has a pH below 7
Alkalinity - correct answer The measurement of a sample's capacity to neutralize acid
Approval Authority - correct answer The agency determining whether a pretreatment program
contains the necessary elements to meet the intent of the Act
Atomic Weight - correct answer 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
Base - correct answer A compound which liberates hydroxide ions and have a pH above 7
Biochemical Oxygen Demands (BOD) - correct answer 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
, Biological Treament - correct answer 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
Categorical Industrial User (CIU) - correct answer An industrial user (refer to IU) that is
conducting processes subject to a categorical standard promulgated by the US EPA
centrifugal pumps - correct answer pumps using centrifugal force to convey liquid. Discharge
will vary according to inlet and discharge pressure
Chain-of- Custody - correct answer 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
Chemical Oxygen Demand (COD) - correct answer 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 present in
wastewater. The results of the COD test are not necessarily related to the BOD, because the
chemical oxidant responsible for utilizing the oxygen may react with substances which bacteria
do no stabilize.
Cipolletti Water - correct answer A trapezoidal sharp-crested weir for measurement of liquid
discharge in open channels
Clean Water Act (CWA) - correct answer Public law (PL 92-500) enacted in 1972, which sets the
framework for the imposition of industrial wastewater control programs on municipalities and
the regulation of industrial users.
CWA Sections 307(b)(c) sets forth the authority for the US EPA to est pretreatment standards for
existing and new sources discharging industrial wastewater to publicly owned treatment works
(POTWs)
40 CFR 121- 124 - correct answer The federal storm water regulations for the permitting of
municipalities and industries. Regulations define storm water terms, permitting, inspecting, and
sampling measurements
40 CFR 136 - correct answer The regulations for sampling preservation and analyses of water,
wastewater, and solid waste
40 CFR 403 - correct answer The federal regulations defining the elements of a pretreatment
program, prohibited discharges, and the approval process for establishing a pretreatment
program
Acid - correct answer A compound which liberates hydrogen ions and has a pH below 7
Alkalinity - correct answer The measurement of a sample's capacity to neutralize acid
Approval Authority - correct answer The agency determining whether a pretreatment program
contains the necessary elements to meet the intent of the Act
Atomic Weight - correct answer 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
Base - correct answer A compound which liberates hydroxide ions and have a pH above 7
Biochemical Oxygen Demands (BOD) - correct answer 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
, Biological Treament - correct answer 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
Categorical Industrial User (CIU) - correct answer An industrial user (refer to IU) that is
conducting processes subject to a categorical standard promulgated by the US EPA
centrifugal pumps - correct answer pumps using centrifugal force to convey liquid. Discharge
will vary according to inlet and discharge pressure
Chain-of- Custody - correct answer 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
Chemical Oxygen Demand (COD) - correct answer 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 present in
wastewater. The results of the COD test are not necessarily related to the BOD, because the
chemical oxidant responsible for utilizing the oxygen may react with substances which bacteria
do no stabilize.
Cipolletti Water - correct answer A trapezoidal sharp-crested weir for measurement of liquid
discharge in open channels
Clean Water Act (CWA) - correct answer Public law (PL 92-500) enacted in 1972, which sets the
framework for the imposition of industrial wastewater control programs on municipalities and
the regulation of industrial users.
CWA Sections 307(b)(c) sets forth the authority for the US EPA to est pretreatment standards for
existing and new sources discharging industrial wastewater to publicly owned treatment works
(POTWs)
