Once soil mantle and percolation testing is complete, how long is the testing valid?
There is not a defined expiration date for an approved sewage disposal area. The sewage disposal area must meet the code requirements in effect at the time of septic and building permit application submittal. Generally, soils testing completed prior to 1992 does not meet the current standard and a new site evaluation with new soils testing must be completed. Soils testing completed after 1992 will be reviewed by the District Specialist for adequacy.
