Sewage Treatment Systems

Question 1

You should check “Yes” to “Manufacturer’s prohibitions and instructions should be followed when installing components on steep slopes. An alternative method of distribution should be used.” when what problem is marked on your card?

Answer 1

Slopes greater than 18 percent

Question 2

You should check “Yes” to “Choose an alternate site” when what problem is marked on your card?

Answer 2

Areas subject to flooding, slippage or subsidence

Question 3

You should check “Yes” to “Use an alternative system or design component such as drip distribution, spray irrigation, or an approved pretreatment device to ensure uniform dispersal and water quality standards” when what problem is marked on your card?

Answer 3

Any of the following present:

Slopes of 6 to 12%
Coarse or fine texture in any layer
Single grained, platy or massive soil structure
Moderately deep to restrictive soil features or bedrock

Question 4

You should check “Yes” to “Design and implement an engineered drainage system to effectively lower the seasonal water table” when what problem is marked on your card?

Answer 4

Seasonal high water table within a depth of 16 inches, with no other moderate or severe limitations

Question 5

You should check “Yes” to “Elevate the infiltrative surface of soil absorption components above the ground surface to increase the vertical separation distance through the use of approved sand fill material” when what problem is marked on your card?

Answer 5

Less than 20 inches to restrictive soil features or bedrock

Question 6

You should check “Yes” to “Conventional teaching trenches will work well on this site” when what problem is marked on your card?

Answer 6

No moderate or severe limitations