R 299.4310 Type III landfill location restrictions; groundwater isolation.

Rule 310. (1) Type III landfills that do not have a liner or leachate collection system shall have a permanent minimum clearance of 4 feet from the bottom of the waste to the groundwater level, unless the director authorizes a variance from this requirement under R 299.4108. (2) Type III landfills that have a liner shall have a permanent minimum clearance of 4 feet from the top of the liner to the groundwater level, unless the director authorizes a variance from this requirement under R 299.4108. (3) Gravity interception of groundwater to maintain the minimum clearance to groundwater level specified by this rule may be utilized. The pumping of groundwater to control groundwater level is not considered permanent and shall not be utilized.