Solid or viscous substance in quantities or of such size capable
of causing obstruction to the flow in sewers, or other interference
with the proper operation of the wastewater works, such as, but not
limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass,
rags, feathers, tar, plastics, wood, unground garbage, whole blood,
paunch manure, hair and fleshing, entrails and paper dishes, cups,
milk containers, etc., either whole or ground by garbage grinders,
lime slurry, lime residues, slops, chemical residues, paint residues,
or bulk solids.