A few months ago an installer we have worked with sent soil pictures to interpret with the comments that when he dug up an existing failing system “the best I could dig was about 8.5 feet deep in about 4 different spots. Soil was tight and when it broke out it was almost like rock, and hitting it with a hammer and it would break easily.”
His description would fit perfectly with describing soil layers massive in structure; very dense and compact in nature and very slowly permeable. Given his location, this describes natural soil layers and not soil that has
Avoid Digging Deep When Designing Drainfields
Keeping the trenches shallow allows the trench bottom to be located above the required separation distance from a limiting soil layer
Jun 21, 2022
| by Jim Anderson and Dave Gustafson |
