In addition to the definitions contained in WAC 197-11-700 through 197-11-799, the following terms shall have the listed meanings:

(1) "Office" means one of the five offices in the department of ecology supervised by an assistant director.

(2) "Region" means any one of the four regional offices of the department.

(3) "Program" means any one of the department's headquarters sections or divisions that administers a program, such as water quality, water resources, shorelands, and hazardous waste.