Solid or viscous substances which may cause obstruction to the flow
in a sewer or other interference with the operation of the wastewater
treatment facilities such as, but not limited to, garbage with particles
greater than 1/2 inch in any dimension, animal guts or tissues, 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, gas, tar, asphalt residues, mud, or glass
grinding or polishing wastes.