MA Soil Evaluator questions
and answers (verified for
accuracy)
Why do we treat sewage? - answer Protect public health
and the environment.
What are key issues evaluated while assuring protection? -
answer 1. Good treatment
2. Economical
3. Sustainable
Problems with untreated sewage - answer 1. Bacteria
2. Virus
3. Fecal Coliform
4. Parasites
What is primary treatment? Wha t is its job? How does it
work? - answer Septic Tank - Its job is to catch solids by
creating three layers: Scum layer- floating soap, grease,
tp, ect
Liquid layer- water, liquid, and suspended solids
Sludge- heavy organic and inorganic materials in the
bottom of the tank
(Anaerobic bacteria breakdown organic solids
, What is the role of a D-Box? - answer A d-box is designed
to distribute partially treated sewage effluent evenly
across the soil absorption system (SAS) that will disperse
into the soil.
What is a Soil Absorption System? - answer The SAS
safely treats, disperses, and recycles wastewater. All
treatment dispersal takes place on site or close by.
Natural physical, chemical, biological processes occur
primarily in the soil.
How does a SAS work? What happens in the drain field and
in the soil? - answer In an aerobic condition, effluent is
treated by passing through the soil of the SAS and it is
filtered and the bacteria reduces the BOD.
What happens when wastewater enters soil? - answer -
Biomat forms over time
-Unsaturated conditions are ideal
-Aerobic organisms treat the wastewater
Is soil good for treating pathogens in wastewater? -
answer Yes, soil is great for treating pathogens in
wastewater.
-They attach to the soil particles
-They are attacked by soil organisms
-The soil is a very effective treatment media
What Form 11 questions would you use the UCal Davis/
USGS Soil Web? - answer Section B. Site Information
and answers (verified for
accuracy)
Why do we treat sewage? - answer Protect public health
and the environment.
What are key issues evaluated while assuring protection? -
answer 1. Good treatment
2. Economical
3. Sustainable
Problems with untreated sewage - answer 1. Bacteria
2. Virus
3. Fecal Coliform
4. Parasites
What is primary treatment? Wha t is its job? How does it
work? - answer Septic Tank - Its job is to catch solids by
creating three layers: Scum layer- floating soap, grease,
tp, ect
Liquid layer- water, liquid, and suspended solids
Sludge- heavy organic and inorganic materials in the
bottom of the tank
(Anaerobic bacteria breakdown organic solids
, What is the role of a D-Box? - answer A d-box is designed
to distribute partially treated sewage effluent evenly
across the soil absorption system (SAS) that will disperse
into the soil.
What is a Soil Absorption System? - answer The SAS
safely treats, disperses, and recycles wastewater. All
treatment dispersal takes place on site or close by.
Natural physical, chemical, biological processes occur
primarily in the soil.
How does a SAS work? What happens in the drain field and
in the soil? - answer In an aerobic condition, effluent is
treated by passing through the soil of the SAS and it is
filtered and the bacteria reduces the BOD.
What happens when wastewater enters soil? - answer -
Biomat forms over time
-Unsaturated conditions are ideal
-Aerobic organisms treat the wastewater
Is soil good for treating pathogens in wastewater? -
answer Yes, soil is great for treating pathogens in
wastewater.
-They attach to the soil particles
-They are attacked by soil organisms
-The soil is a very effective treatment media
What Form 11 questions would you use the UCal Davis/
USGS Soil Web? - answer Section B. Site Information
