Any ashes, cinders, sand, mud, straw, shavings, metal,
glass, rags, feathers, tar, plastic, wood, paunch manure, hair and
fleshings, entrails, lime slurry, lime residues, beer or distillery
slops, chemical residues, paint residues, cannery waste bulk solids
or any other solid or viscous substance capable of causing obstruction
to the flow of the sewers or other interference with the proper operation
of the sewage system.