Zoning Map. The boundaries of the zoning districts are delineated on a separate digital orthophoto (aerial photograph) base map, supplied by the Columbia County Geographic Information System Office, which shows approximate tax parcel boundaries. This map, entitled "Montour Township Zoning Map," together with all explanatory matter thereon, is hereby made a part of this chapter. Where a Zoning Map change is proposed or petitioned (also referred to as a rezoning), notice of the public hearing shall be posted conspicuously by the Township at points deemed sufficient by the Township along the tract to notify potentially interested citizens. The affected tract or area shall be posted at least one week prior to the date of the hearing. Notice of the hearing, including the location of the property involved plus the location, date and time of the hearing, shall be mailed by the Township, at least 30 days prior to the hearing, by first class mail, to the addresses to which real estate tax bills are sent for all property located within the area to be rezoned. Within 30 days after enactment, a copy of the amendment shall be forwarded to the Columbia County Planning Commission.