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Georgia Mound and Area Fill Systems Practice Exam
SECTION 1: SYSTEM IDENTIFICATION AND COMPARISON
Question 1
What are the two basic types of systems that use fill materials in Georgia?
A. Septic tank and drainfield
B. Wisconsin Mound Soil Absorption System and Area Fill System
C. Aerobic and anaerobic systems
D. Gravity and pressure systems
Answer: B
Explanation: There are two basic types of systems that use fill materials in
Georgia: the Wisconsin Mound Soil Absorption System and the Area Fill System.
Both are similar in design and installation, but have key differences in sizing
criteria, configurations, and site limitations .
Question 2
What is the primary sizing criterion for a Wisconsin Mound system?
A. Percolation rate only
B. Basal and linear loading rates
,C. Soil texture only
D. Site slope percentage
Answer: B
Explanation: Wisconsin Mound systems require both a basal loading rate and a
linear loading rate for sizing. The basal loading rate determines the total
absorption area, while the linear loading rate determines the bed dimensions .
Question 3
What is the primary sizing criterion for an Area Fill system?
A. Basal loading rate only
B. Linear loading rate only
C. Percolation rate
D. Both basal and linear loading rates
Answer: C
Explanation: Area Fill systems require only a percolation rate for sizing. This is
based on the most restrictive texture encountered within 12 inches of the original
soil surface .
Question 4
Which absorption field configuration must a Wisconsin Mound use?
A. Trenches only
B. Bed configuration only
C. Drip emitters only
D. Any approved configuration
Answer: B
Explanation: Wisconsin Mound absorption fields must use a bed configuration
only. Area Fill systems may use trenches, beds, or drip emitters, but not serial
trenches .
, Question 5
Which absorption field configurations are allowed for an Area Fill system?
A. Bed configuration only
B. Trenches only
C. Any approved configuration except serial trenches
D. Drip emitters only
Answer: C
Explanation: Area Fill absorption fields may be designed in any approved
configuration (trenches, beds, drip emitters, etc.) with the exception of serial
trenches, which are not allowed .
Question 6
What is the maximum site slope allowed for a Wisconsin Mound system?
A. 12%
B. 15%
C. 20%
D. 25%
Answer: D
Explanation: The maximum slope of a site for a Wisconsin Mound system is 25%.
Slopes exceeding 25% are considered unsuitable unless a special investigation
demonstrates the limitation can be overcome .
Question 7
What is the maximum site slope allowed for an Area Fill system?
A. 12%
B. 15%