Landowner curative amendment. A landowner who desires to challenge on substantive grounds the validity of any portion of this chapter which prohibits or restricts the use or development of land in which he has an interest may submit a curative amendment to the Borough Council. The request shall include a written statement informing Council of the matters that are in issue and the grounds for the challenge, the proposed amendment as the landowner wishes it to be adopted, and proposed plans for development of the land in question that are frustrated by the existing zoning. Council shall seek comments from the Borough and Westmoreland County Planning Commissions at least 30 days prior to a public hearing, which shall be held, with proper public notice, not later than 60 days after the landowner's request is received at a regular meeting of Council. A stenographic record of the hearing shall be kept unless Council and the appellant agree to a tape recording, and Council shall have the power to administer oaths, issue subpoenas, compel the attendance of witnesses and production of relevant documents. The parties may be represented by counsel, which may present evidence and cross-examine adverse witnesses. The landowner's proposed amendment shall be considered denied when Council informs the landowner it will not adopt the amendment, when Council adopts another amendment unacceptable to the landowner, or when Council fails to act on the landowner's amendment within 30 days after the public hearing, unless the time period is extended by mutual consent.