If the project is for Step 3 grant assistance, unless it is solely for acquisition of eligible land, the applicant must obtain the Regional Administrator's approval of its user charge system (§ 35.2140) and proposed (or existing) sewer use ordinance § 35.2130). If the applicant has a sewer use ordinance or user charge system in affect, the applicant shall demonstrate to the Regional Administrator's satisfaction that they meet the requirements of this part and are being enforced.