The connection permit is issued to the permit holder for a particular type of land use generating specific projected traffic volumes at the final stage of proposed development. Any changes made in the use, intensity of development, type of traffic, or traffic flow of the property requires the permit holder, his or her assignee, or property owner to contact the department to determine if further analysis is needed to determine if the change is significant and would require a new permit and modifications to the connection. An engineering study, signed and sealed by a professional engineer registered in accordance with chapter 18.43 RCW, may be required to document the extent of the change. If modification of the existing connection is required, based on a significant change as determined by the department, the permit holder, his or her assignee, or the property owner shall obtain a new permit prior to the initiation of any on-site construction to the connection or to the property.

(1) Significant change. A significant change is one that would cause a change in the category of the connection permit or one that causes an operational, safety, or maintenance problem on the state highway system based on objective engineering criteria or available accident data. Such data shall be provided to the property owner and/or permit holder and tenant upon written request.

(2) Notification. Failure to contact the department to determine the need for connection modifications or to apply for a new permit for such modifications prior to initiation of property improvements, land use changes or traffic flow alteration actions shall result in notification to the property owner and/or permit holder and tenant of intent to revoke the existing permit and closure of the connection to the property.

(3) Costs. The permit holder is responsible for all costs associated with connection removal, relocation, or modification caused by increased or altered traffic flows necessitated by changes to facilities, use, or to the nature of the business on the property.