In this subchapter, the following definitions apply:

(1) "Active life" has the meaning given in ARM 17.50.502.

(2) "Class II landfill facility" has the meaning given in ARM 17.50.504.

(3) "Class III landfill facility" has the meaning given in ARM 17.50.504.

(4) "Class IV landfill facility" has the meaning given in ARM 17.50.504.

(5) "Closure" has the meaning given in ARM 17.50.502.

(6) "Department" has the meaning given in ARM 17.50.502.

(7) "Existing," when used in conjunction with "unit" or a type of unit, has the meaning given in ARM 17.50.502.

(8) "Facility" has the meaning given in ARM 17.50.502.

(9) "Ground water" has the meaning given in ARM 17.50.502.

(10) "Landfill" has the meaning given in ARM 17.50.502.

(11) "Lateral expansion" has the meaning given in ARM 17.50.502.

(12) "Leachate" has the meaning given in ARM 17.50.502.

(13) "Operator" has the meaning given in ARM 17.50.502.

(14) "Owner" has the meaning given in ARM 17.50.502.

(15) "Post-closure care" has the meaning given in ARM 17.50.502.

(16) "Unit" has the meaning given in ARM 17.50.502.