1. a) referral to the Department's legal representative for judicial enforcement of the Administrative Support Order;
2. b) referral to the Comptroller of the State of Illinois for collection under Section 10.05 of the State Comptroller Act [15 ILCS 405/10.05]; and
3. c) referral to a private collection agency for collection.

If the legally responsible relative has failed for 90 days after the effective date of the support order to make regular support payments according to the support order and a balance due is outstanding, the Department may take any or all of the following actions to collect the past due support: