In their interpretation and application, the provisions of this Chapter shall be held to be minimum requirements and shall be liberally construed in favor of the municipality and shall not be deemed a limitation or repeal of any other powers granted by the Wisconsin Statutes. Where a provision of this Chapter is required by a standard in Chapter NR 117, Wis. Adm. Code, and where the Chapter provision is unclear, the provision shall be interpreted in light of the Chapter NR 117 standards in effect on the date of the adoption of this Chapter or in effect on the date of the most recent text amendment to this Chapter.