(1) You will be charged $62.50 per hour for an examination or investigation or both pursuant to WAC 208-680-610 or 208-680-620.

(2) You will also be charged the expenses of an examination or investigation or both. The expenses may include, but are not limited to, staff time, travel, lodging, per diem, and any other expenses. At a reasonable time following each examination or investigation performed, the director must provide the person examined with an invoice for the expenses incurred during the examination or investigation. Payment of the invoiced amount must be made within thirty days of the date of the invoice to avoid the addition of interest charges to the amount due.