Section 764.52 - Processing an incomplete application(a) Within 7 calendar days of receipt of an incomplete application, the Agency will provide the applicant written notice of any additional information which must be provided. The applicant must provide the additional information within 15 calendar days of the date of this notice.(b) If the additional information is not received, the Agency will provide written notice that the application will be withdrawn if the information is not received within 15 calendar days of the date of this second notice. 72 FR 63298 , Nov. 8, 2007, as amended at 86 FR 43391 , Aug. 9, 2021