CWEA GRADE 1 LAB ANALYST TEST BANK
2026 FULL QUESTIONS AND CORRECT
ANSWERS GRADED A+
◉ 40 CFR 136. Answer: The regulations for sampling preservation and
analyses of water, wastewater, and solid waste
◉ 40 CFR 403. Answer: The federal regulations defining the elements
of a pretreatment program, prohibited discharges, and the approval
process for establishing a pretreatment program
◉ Acid. Answer: A compound which liberates hydrogen ions and has a
pH below 7
◉ Alkalinity. Answer: The measurement of a sample's capacity to
neutralize acid
◉ Approval Authority. Answer: The agency determining whether a
pretreatment program contains the necessary elements to meet the intent
of the Act
, ◉ Atomic Weight. 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. Answer: A compound which liberates hydroxide ions and have
a pH above 7
◉ Biochemical Oxygen Demands (BOD). 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. 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). Answer: An industrial user (refer to
IU) that is conducting processes subject to a categorical standard
promulgated by the US EPA
◉ centrifugal pumps. Answer: pumps using centrifugal force to convey
liquid. Discharge will vary according to inlet and discharge pressure
2026 FULL QUESTIONS AND CORRECT
ANSWERS GRADED A+
◉ 40 CFR 136. Answer: The regulations for sampling preservation and
analyses of water, wastewater, and solid waste
◉ 40 CFR 403. Answer: The federal regulations defining the elements
of a pretreatment program, prohibited discharges, and the approval
process for establishing a pretreatment program
◉ Acid. Answer: A compound which liberates hydrogen ions and has a
pH below 7
◉ Alkalinity. Answer: The measurement of a sample's capacity to
neutralize acid
◉ Approval Authority. Answer: The agency determining whether a
pretreatment program contains the necessary elements to meet the intent
of the Act
, ◉ Atomic Weight. 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. Answer: A compound which liberates hydroxide ions and have
a pH above 7
◉ Biochemical Oxygen Demands (BOD). 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. 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). Answer: An industrial user (refer to
IU) that is conducting processes subject to a categorical standard
promulgated by the US EPA
◉ centrifugal pumps. Answer: pumps using centrifugal force to convey
liquid. Discharge will vary according to inlet and discharge pressure
