Solid or viscous substances which may cause obstruction to the flow
in the public sewage system or other interference with the operation
of the wastewater treatment facilities, or which may pass through
to surface waters, including but not limited to petroleum, oil, nonbiodegradable
cutting oil, grease, garbage with particles greater than one-half
inch in any dimension, animal guts or tissue, paunch manure, bone,
hair, hide or fleshing, entrail, 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, gas, tar, asphalt residue, residue from refining or processing
of fuel or lubricating oil, mud or glass grindings or polishing wastes.