The department has the authority to:

(1) Conduct audits of a provider, either for cause or at random;

(2) Conduct audits at a provider's place of business using copies and originals of all files and records maintained by the provider;

(3) Conduct audits away from a provider's place of business, using copies of all files and records supplied by the provider;

(4) Require a provider to submit legible copies of all files and records requested for audit;

(5) When the department requires the provider to submit copies of records and files to the department, the provider shall submit the requested material within thirty calendar days of the request;

(6) Inspect and audit all of the provider's vocational rehabilitation files and records relating to services delivered under Title 51 RCW;

(7) Inspect and audit a provider's documentation supporting charges billed for vocational rehabilitation services delivered.