The provisions of this Section 10-1 are held to be minimum requirements to carry out the purpose of this Section 10-1 and are not intended to interfere with, abrogate, or annul any easement, covenant, or other valid ordinance. Where this Section 10-1 imposes a greater restriction than is required by existing regulations, easements, covenants, agreements, or ordinances, the provisions of this Section 10-1 shall control. Regardless of any other provision of this Section 10-1, no land shall be used and no structure erected or maintained in violation of any state or federal pollution control or environmental protection law or regulation.