Saturated zone or "zone of saturation" means that part of the earth's crust in which all voids are filled with water.
Unsaturated zone or "zone of aeration" means the zone between the land surface and the water table.
Trusted Systems include only the following methods of physical delivery: (1) hand-delivery by a person authorized to have access to the Confidential Information with written acknowledgement of receipt; (2) United States Postal Service (“USPS”) first class mail, or USPS delivery services that include Tracking, such as Certified Mail, Express Mail or Registered Mail; (3) commercial delivery services (e.g. FedEx, UPS, DHL) which offer tracking and receipt confirmation; and (4) the Washington State Campus mail system. For electronic transmission, the Washington State Governmental Network (SGN) is a Trusted System for communications within that Network.
Atmosphere-supplying respirator means a respirator that supplies the respirator user with breathing air from a source independent of the ambient atmosphere, and includes supplied-air respirators (SARs) and self-contained breathing apparatus (SCBA) units.
Medically stationary means that no further material improvement would reasonably be expected from medical treatment or the passage of time.