By requiring the applicant to mail written notice of the date, time and place of the hearing, together with a copy of the application and survey submitted to the ZBA, by certified mail, return receipt requested, to every property owner, as shown on the current Village assessment roll, of parcels abutting and directly opposite (by extension of lot lines through a street or right-of-way) of the property which is the subject of the application, proof of which shall be submitted to the ZBA on or before the commencement of the public hearing in the form of an affidavit with postal receipts annexed thereto confirming mailing of said notices at least 10 days prior to the hearing date.