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When using plants over an absorption field you should consid…

When using plants over an absorption field you should consider all of the following EXCEPT:

Published February 6, 2026
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As part of an ATU, the clarification chamber aerates the inf…

As part of an ATU, the clarification chamber aerates the influent wastewater for aerobic bacterial growth.

Published February 6, 2026
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A ___ determines the unconfined compressive strength of soil…

A ___ determines the unconfined compressive strength of soil in tsf (tons per square foot).

Published February 6, 2026
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The minimum fall in pipe elevation from the house to the sep…

The minimum fall in pipe elevation from the house to the septic tank is ___ or ___ of pipe.

Published February 6, 2026
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One way to maximize the nutrients removed from a site is to…

One way to maximize the nutrients removed from a site is to harvest wetland plants several times during the growing season.

Published February 6, 2026
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If there is surfacing sewage at the septic tank:

If there is surfacing sewage at the septic tank:

Published February 6, 2026
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Benching is allowed in Type C soils.

Benching is allowed in Type C soils.

Published February 6, 2026
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OSHA excavation standards require an employer to have a comp…

OSHA excavation standards require an employer to have a competent person to classify soil and rock deposits.

Published February 6, 2026
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There can be no benching greater than 20 feet total depth un…

There can be no benching greater than 20 feet total depth unless designed and approved by a registered professional engineer.

Published February 6, 2026
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A cubic meter of soil weighs:

A cubic meter of soil weighs:

Published February 6, 2026
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