Production of or attempting to produce a marijuana concentrate by a method of extraction using flammable or combustible chemicals including, but not limited to, butane, acetone, hexane, naphtha, ethanol, methanol, petroleum ether, and alcohol constitutes marijuana product manufacturing and is prohibited except where such marijuana extraction is authorized by state law or regulation, permit, license, or registration or where such marijuana extraction is authorized by borough ordinance, license, registration, or permit. (Ord. 17-08-472 § 4)