What Site Constraints effect a sites suitability for a on-site septic leachfield
Setbacks:
- Water
- Groundwater
- Lakes, ponds, spring
- Wells
- Neighbors wells
- Streams, man-made ditches
- Property lines
- Buildings or structures
- Cut/fill banks >3’
Depth of Soil: Must be at least 2’ to unsuitable soil (hard pan, massive clay, >85% sand) for undeveloped site
Depth to Rock: Must be at least 2’ to >50% rock for undeveloped site
Depth to Groundwater: Must be at least 2’ to winter groundwater level as determined by Agency
Site Slope: All systems are limited to a slope of 30%.
What Are Some Of The Warning Signs
v Rock at the surface is evidence of to much rock on the site.
v No vegetation or only short grasses is evidence of to shallow of soil.
v Signs of soil moisture, ponding, moss, white salt deposits, natural water loving plants
v Overhead power line to a neighbor’s shed is evidence of well in the structure
v Open ground cracks is evidence of too much clay in the soil
v Sand at the surface
What To Do
v Identify the problems and future risk assessment by a septic specialist
v Determine relative severity and cost of mitigation
v Perform soil investigation for repair/permit design criteria
v Enclose or move storm drainage features (ditch or inlet/outlet) to reduce setback
v Evaluate the condition and remaining life of the existing septic system.