CWEA LAB ANALYST GRADE I VOCAB Questions and Correct Solutions 2024/2025

CWEA LAB ANALYST GRADE I VOCAB Questions and Correct Solutions 2024 40 CFR 121- 124 - 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 - 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 Chain-of- Custody - 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 sampleChemical Oxygen Demand (COD) - 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