Quiz Septic Tanks University of Illinois Extension

University of Illinois Extension

Quiz

Instructions for Conducting Percolation Tests 905 Appendix A, Illustration G

Instructions for Conducting Percolation Tests 905 Appendix A, Illustration G

At least 3 separate percolation tests must be performed with the holes being separated by a distance of ____ feet.
1. 10
2. 20
3. 25
4. 50
Instructions for Conducting Percolation Tests 905 Appendix A, Illustration G

An 18 hour waiting period between presoaking and the percolation test may be waived if
1. The soil is mostly sand.
2. The soil is mostly silt.
3. It has rained within two hours of the test.
4. It has rained within one hour of the test.
Instructions for Conducting Percolation Tests 905 Appendix A, Illustration G

The only acceptable results from the percolation test are from
1. The last 12 inches of drop in water.
2. The last 8 inches of drop in water.
3. The last 18 inches of drop in water.
4. The last 6 inches of drop in water.

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