(a) Time limit; minimum procedures. Each SEA must include in its complaint procedures a time limit of 60 days after a complaint is filed under Sec. 300.153 to--

(1) Carry out an independent on-site investigation, if the SEA determines that an investigation is necessary;

(2) Give the complainant the opportunity to submit additional information, either orally or in writing, about the allegations in the complaint;

(3) Provide the public agency with the opportunity to respond to the complaint, including, at a minimum--

(i) At the discretion of the public agency, a proposal to resolve the complaint; and

(ii) An opportunity for a parent who has filed a complaint and the public agency to voluntarily engage in mediation consistent with Sec. 300.506;

(4) Review all relevant information and make an independent determination as to whether the public agency is violating a requirement of Part B of the Act or of this part; and

(5) Issue a written decision to the complainant that addresses each allegation in the complaint and contains--

(i) Findings of fact and conclusions; and

(ii) The reasons for the SEA's final decision.