Within 60 days from the receipt of the proposed amendment, the Planning and Zoning Commission shall transmit its recommendation to the City Council. The Commission may recommend that the amendment be granted as requested or modification of the amendment as requested or recommend that the amendment be denied. The written decision of the Commission shall indicate the specific reason(s) upon which the recommendation is based, including the basis for their determination that the proposed amendment is or is not consistent with the comprehensive plan. In addition, any petition for amendment shall not receive a favorable recommendation unless one or more of the following conditions exists:
(a) There has been a substantial change in area conditions.
(b) There is a legitimate requirement for additional land area for the particular zoning district.
(c) There is indicated a manifest error in the original zoning designations.
(d) There is accordance with or more appropriate conformance to the Deer Park Comprehensive Plan.