Each state agency that has an open seasonal or entry level nontesting class position, but does not have a qualified hiring pool, shall notify the Employment Development Department or its delegate in the area where the job is located of the opening no later than five working days after the vacancy occurs. The state agency shall request referrals of public assistance recipients and at the same time shall provide necessary job-related information. The agency shall provide a reasonable period for referrals, but not less than 10 working days.