Upon the submission of a complete application for a site plan for ten (10) acres of land or less, the Planning Board shall grant or deny preliminary approval within forty-five (45) days of the date of such submission or within such further time as may be consented to by the developer. Upon the submission of a complete application for a site plan of more than ten (10) acres, the Planning Board shall grant or deny preliminary approval within ninety-five (95) days of the date of such submission or within such further time as may be consented to by the developer. Otherwise, the Planning Board shall be deemed to have granted preliminary approval of the site plan.