Solid or viscous wastes. Solid or viscous wastes which will or may
cause obstruction to the flow in a sewer or otherwise interfere with
the proper operation of the sewer system. Prohibited materials include,
but are not limited to, grease, improperly shredded garbage, animal
guts or tissues, diseased human organs or tissue fluids, paunch manure,
bones, hair, hides or fleshings, entrails, whole blood, feathers,
ashes, cinders, sand, spent lime, stone or marble dust, metal, glass,
straw, shavings, grass clippings, rags, spent grains, spent hops,
wastepaper, wood, plastic, tar, asphalt residues, residues from refining
or processing of fuel or lubricating oil, and similar substances.