Odd Todd Flashcards
The required container/preservative conditions for collecting a sample for heavy metal analysis are:
*A. acid washed plastic or glass / 50% HNO3 to pH < 2
B. acid washed glass only / 50% H2SO4 to pH < 2
C. acid washed glass only / 50% HCl to pH < 2
D. acid washed plastic or glass / 50% HF to pH < 4
Which one of the following sets of parameters is most commonly used for continuous water quality monitoring?
*A. Temperature, pH and specific conductance
B. Biochemical oxygen demand, total suspended solids, and total dissolved solids
C. Lower explosive limit, carbon monoxide and sulfide
D. Heavy metals, pH, and specific ion
When are grab samples used?
A. To determine average conditions
*B. To enforce discharge standards
C. To measure chronic violations
D. When flow-weighted samples are needed
The required type of container for an oil and grease sample is:
*A. glass
B. stainless steel
C. aluminum
D. inert plastic (teflon)
Which of the chemical equations represents a neutralization reaction?
A. 2AgNO3 + K2SO4 —–> Ag2SO4 + Ag2SO4 + 2KNO3
B. 4NH3 + 7O2 —–> 4NO2 + 6H2O
*C. NaOH + HCl —–> NaCl + H2O
D. CaO + H2O —–> Ca(OH)2
An industrial user under the Industrial Pretreatment Program is disputing some lab results. The user says it has never discharged the level of PCBs that the lab claims it has. The user may have lawyers involved and a court date set to resolve this dispute. The lab personnel did not follow the chain of custody procedures, but the y know that they took the samples properly and that there is no doubt about the accuracy of the results. According to the law:
A. the lab personnel must go back and correct the chain of custody
*B. the results are not valid
C. the results can be verified by resampling
D. the lab results are valid
Which of the following information is not necessary on a chain of custody?
A. Sample identification
B. Parameters to be analyzed
*C. Waste hauling manifest number
D. date and time of sample collection
Field tests are important when:
*A. Speed is more important than accuracy
B. accuracy is more important than speed
C. concentration is more important than the limit
D. the pollutant is a composite
Which of the following pollutants is considered a total toxic organics?
A. Hydrogen
B. Cyanide
C. Silver
*D. Benzene
Field tests are a convenient tool, and:
A. will produce the same level of accuracy and precision as a lab does
B. are not recognized by EPA
*C. may not be able to detect a pollutant that is masked by other materials
D. are useful when accuracy is more important than speed
A significant industrial user who discharges a pollutant, causing imminent endangerment to human health, welfare, or the environment is:
A. subject to stormwater violation
*B. in significant noncompliance
C. subject to bankruptcy
D. required to pay restitution
Compared to concurrent rinse tanks, counter current tanks use:
A. less water but more chemicals
*B. less water and less chemicals
C. more water and more chemicals
D. more water but less chemicals
In order to reduce the concentration of toxic substances prior to discharge into a municipal sewer system, the Federal Water Pollution Control Act of 1972 required that by 1983 all industrial wastewater dischargers install which of the following levels of pretreatment equipment?
A. Best practicable technology
B. Best allowable technology
C. Best practical technology
*D. Best available technology
A significant industrial user who knowingly fails to accurately report a discharge violation is:
*A. in significant non compliance
B. in normal compliance
C. officially reprimanded
D. subject to permit revocation
Which one of the following is the most common pollutant from the circuit board industry?
A. Cadmium
*B. Copper
C. Cyanide
D. Zinc
In the hierarchy of environmental management methods, which objective was given priority by congress in 1990.
A. Waste recycling
*B. Pollution prevention
C. Treatment
D. Disposal
Which of the following constituents listed below has little or no effect on biological treatment?
A. Chromium VI
B. Cyanide
C. Lead
*D. Boron
Biological activity in long, sluggish-flow, flat grade sewers will likely cause:
A. Sedimentation
*B. increased gas production
C. an increase in BOD
D. a decrease in temperature
Which one of the following does an ORP meter measure?
A. Oxide-reformation point
*B. Oxidation-reduction potential
C. Osmotic-reflow potential
D. Organic-reduction point
In the precipitation treatment for heavy metals removal:
*A. chelation makes removal more difficult
B. metals are best treated at a neutral pH
C. chelation makes removal easier
D. the pH at which metals are soluble is not critical