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, garbage
with particles greater than 1/2 inch in any dimension, animal guts
or tissues, paunch manure, bones, hair, hides or flushings, entrails,
whole blood, medical waste, feathers, ashes, cinders, sand, stone
or marble dust, metal, glass, straw, shavings grass clippings, rags,
spent grains, spent hops, waste paper, paper dishes, cups, milk containers,
lime slurries, wood, plastics, gas, tar, asphalt residues, residues
from refining or processing of fuel or lubricating oil, mud, or glass
grinding or polishing wastes.