In any year in which no quadrennial unit proof test is required, an examination must be carried out by an accredited person or his authorized representative. Such annual examination must be made not later than the anniversary date of the quadrennial certification and must conform in all applicable respects with WAC 296-304-20003(4).
Wash. Admin. Code § 296-304-20009
Order 74-25, § 296-304-20009, filed 5/7/74.