(a) Applications for certifications shall be made on a standard form provided by the executive director. The application must be submitted to the executive director with the appropriate fee, as described in §321.8 of this title (relating to Certification Fees).(b) Initial certifications. Certification application forms must be submitted to the executive director for:(1) marine sanitation devices within 45 days of obtaining a boat number or of determining that a boat number is not required to be obtained under the Texas Water Safety Act, Texas Parks and Wildlife Code,