Containing or reacting to form solid or viscous substances or which
may cause obstruction to the flow in a sewer or other interference
with the operation of the sewage treatment plant, such as, but not
limited to, ashes, cinders, spent lime, stone, dust, sand, mud, straw,
shavings, metals, glass, rags, grass clippings, feathers, tar, plastics,
wood, whole blood, paunch manure, bentonite, lye, building materials,
rubber, asphalt residues, hairs, bones, leather, porcelain, china,
ceramic wastes, polishing wastes, hydrolyzed fats, glass grinding
or other solid or viscous substances capable of causing obstruction
or other interference with the operation of the sewer system.