Acceptance of application. The Planning Board shall, within 45 days of the filing of a site plan application, or at its next regular meeting after such filing, whichever is sooner, decide whether to accept the application as complete and begin the review process, or to reject the application as incomplete. If the Planning Board deems the application incomplete, rather than rejecting the application, the Planning Board may request such additional information that it deems necessary to complete the application, and provide for such time as it deems sufficient for the applicant to submit such additional information. If the Planning Board requires a draft environmental impact statement (DEIS) or if one is filed by the applicant(s), then the application shall not be deemed complete until the DEIS is filed and accepted by the Planning Board. If the Planning Board deems an application incomplete, it shall then notify the applicant(s), in writing, of the deficiencies.