“Ledge lot” means a lot on which the only area suitable for the bed and receiving layer has:

1. (a) Less than 4 feet of naturally-deposited soil above ledge, if the proposed ISDS incorporates effluent conduits for which a smaller distance has not been approved; or
2. (b) Less than the separation distance specified in the approval granted for innovative technology under Env-Wq 1024, for a proposed ISDS that incorporates effluent conduits approved under that part.

Source. (See Revision Notes #1 and #2 at chapter heading for Env-Wq 1000) #11184, eff 10-1-16; ss by #14486, eff 2-1-26, EXPIRES: 2-1-36 (formerly Env-Wq 1002.42)