(1) The agency may conduct audit or investigation activities, as described under chapters 74.09 RCW and 182-502A WAC, to determine compliance with the rules and regulations of the core provider agreement, as well as of the GEMT program.

(2) If an audit or investigation is initiated, the participating provider must retain all original records and supporting documentation until the audit or investigation is completed and all issues are resolved, even if the period of retention extends beyond the required six-year period required under WAC 182-502-0020.