Although the website suggests that you use the grievance form, we suggest that you email him directly. Feel free to copy CCDC's Legal Program Assistant at firstname.lastname@example.org. By emailing directly, you can retain a copy of your complaint so that you know that RTD has followed the procedures required by the regulations.
According to the regulations:
49 C.F.R. § 37.17
§ 37.17 Designation of responsible employee and adoption of complaint procedures.
(a) Designation of responsible employee. Each public or private entity subject to this part shall designate at least one person to coordinate its efforts to comply with this part.
(b) Adoption of complaint procedures. An entity shall adopt procedures that incorporate appropriate due process standards and provide for the prompt and equitable resolution of complaints alleging any action prohibited by this part and 49 CFR parts 27, 38 and 39. The procedures shall meet the following requirements:
(1) The process for filing a complaint, including the name, address, telephone number, and email address of the employee designated under paragraph (a) of this section, must be sufficiently advertised to the public, such as on the entity's Web site;
(2) The procedures must be accessible to and usable by individuals with disabilities;
(3) The entity must promptly communicate its response to the complaint allegations, including its reasons for the response, to the complainant and must ensure that it has documented its response.
Let us know if Mr. Neuberg does not follow through on these obligations.