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: grease, petroleum
oil, nonbiodegradable cutting oil, or products of mineral oil origin
in amounts that will cause interference or pass through, 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, waste paper, wood, plastics, gas, tar, asphalt, residues,
residues from refining or processing of fuel, mud, or glass grinding
or polishing wastes.