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<br />223.3 Any waters or wastes having a pH lower than 5.0 or higher
<br />than 9.0, or having any other corrosive property capable of
<br />causing dsmsge or hazard to structures, equipment, and per-
<br />sonnel of the sewage works.
<br />
<br />223.4 Solid or viscous substances in quanti ties, or of such size
<br />capable of causing obstruction to the flow in sewers, or
<br />other interference with the proper operation of the sewage
<br />works such as, but not limited to, ashes, cinders, sand,
<br />,mud, straw, shavings, metal, glass, rags, feathers, tar,
<br />plastics, wood, unground garbage, whole blood, paunch
<br />.manure, hair and fleshings, entrails and paper dishes, cups,
<br />milk containers, etc., ei ther whole or ground by garbage
<br />grinders.
<br />
<br />224. No person shall discharge or cause to be discharged the following
<br />described substances, materials, wa ters, or wastes, except if it
<br />appears likely in the opinion of the Superintendent that such
<br />wastes will not harm either the sewers, sewage treatment process or
<br />equipment, nor have an adverse effect on the receiving stream, nor
<br />can otherwise endanger life, limb, public property, nor constitute
<br />a nuisance. In forming his opinion as to the acceptability of
<br />these wastes, the Superintendent will give consideration to such
<br />factors as the quantities of subject wastes in relation to flows
<br />and velocities in the sewers, materials of construction of the
<br />sewers, nature of the sewage treatment process, capacity of the
<br />sewage treatment plant, degree of treatability of wastes in the
<br />sewage treatment plant, and other pertinent factors. Included,',but
<br />not limited to, the substances not acceptable are the following:
<br />
<br />224.1 Any liquid or vapor having a temperature higher than 150.F,
<br />' 65 ·C.
<br />
<br />2,24. 2
<br />
<br />Any water or waste containing fats, wax, grease or oils,
<br />whether emulsified or not, in excess of 100 mg/l of which
<br />not more than 25 mg/l is soluble oils, or containing sub-
<br />stances which may solidify or become so highly viscous as
<br />to retard flow in the sewer system at temperstures betwen
<br />32" and 150"F (0" and 65·C).
<br />
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<br />
<br />224.3
<br />
<br />Any garbage that has not been properly
<br />installation- and operation of any garbage
<br />than in a residence) may be subject to
<br />approval of the Superintendent.
<br />
<br />shredded. The
<br />grinder (other
<br />the review and
<br />
<br />224.4
<br />
<br />Any waters or wastes containing strong acid iron pickling
<br />wastes, or concentrated plating solutions whether neutral-
<br />ized or not.
<br />
<br />224,5 Any water or wastes exceeding the following maximum
<br />,allowable limitsl
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