Onsite Wastewater Treatment and Disposal Systems - Quiz

Quiz Question

1. Much of the land area in the United States _____________ have soils suited for conventional subsurface soil absorption fields.
Does
Does not
2. The environment into which the wastewater is discharged can be a valuable part of an onsite wastewater and disposal system. If utilized properly, it can provide excellent treatment at little cost. However, if stressed beyond its assimilative capacity, the system will:
Succeed
Improve
Fail
None of the above
3. Evaporation of wastewater into the atmosphere requires 1ittle wastewater pretreatment, but this method of disposal is severely 1imited by:
local climatic conditions
Money
Work needed
None of the above
4. Soil is the weathered and unconsolidated ______________ layer of the earth’s surface.
Inner
Outer
Middle
None of the above
5. Because most soil particles and organic matter are ________ charged, they attract and hold positively charged wastewater components and repel those of like charge.
Negatively
Positively
6. Evaporation can take place from:
a free water surface
bare soil
plant canopies
All of the above
7. Successful use of evaporation for wastewater disposal requires that evaporation __________ the total water input to the system.
Be less than
Match
Exceed
None of the above
8. The soil test reports can provide an indication of soil types and variability. Performance of systems may be determined from the reported:
Water content
Soil mass
Failures
None of the above
9. A visual survey is made to locate the areas on the lot with the ___________ potential for subsurface soil absorption.
Greatest
Least
10. The type and degree of slope of the area should be determined. The type of slope indicates what _______________ problems may be expected.
Wind
Aesthetic
Surface drainage
None of the above
11. __________________ influence water movement in the soil
Soil properties
location in the landscape
climate
all of the above
12. Soil ____________ is related to porosity and the movement of water.
Volume
Bulk density
Velocity
None of the above
13. The intermittent occurrence of individual wastewater-generating activities creates large variations in the wastewater _________ from a residence.
quantity
flow rate
viscosity
none of the above
14. Minimum hourly flows of zero are typical. Maximum hourly flows are ____________ to quantify accurately.
Easier
More difficult
15. Methods for wastewater modification have been developed as part of three, basic interrelated strategies: water conservation and wastewater flow reduction, pollutant mass reduction, and onsite containment for offsite disposal. Each strategy attempts to reduce the flow volume or to ____________ the mass of key pollutants
Decrease
Increase
16. Unseen or apparently insignificant leaks from household fixtures and appliances can waste large volumes of water and generate similar quantities of:
Bacteria
Cost savings
Wastewater
None of the above
17. A second strategy for wastewater modification is directed toward ________________ the mass of potential pollutants at the source.
Decreasing
Increasing
18. An important aspect of wastewater modification concerns the reliability of a given method to yield a projected modification at a specific dwelling or establishment over the:
Short term
Long term
19. Reducing the household wastewater flow volume without reducing the mass of pollutants contributed will increase ____________ the of pollutants in the wastewater stream.
Water
Bacteria
Concentration
None of the above
20. The septic tank is the ____________ used onsite wastewater treatment option in the United States.
Most widely
Least