§ 24-234. Discharge; consent and permission required; prohibited discharges enumerated.

No person shall discharge or cause to be discharged any waters or wastes into the sewer system of the board until written application is made to, and written consent and permission granted by the board and only upon such terms and conditions as the board may fix. No person shall, without such consent, discharge or cause to be discharged into any public sewer any of the hereinafter described waters or wastes, substances or materials:

Waters or waste shall be limited in discharges to sewage systems to concentrations or quantities which will not harm either the sewers, wastewater treatment process or equipment, will not have an adverse effect on the receiving waters of the treated sewage, or will not otherwise endanger lives, limb, public property, or constitute a nuisance. The board may set limitations lower than the limitations established hereinafter, if, in their opinion, such more severe limitations are necessary to meet the above objectives. In forming their opinion as to the acceptability, the board will give consideration to such factors as the quantity of subject waste in relation to flows and velocities in the sewers, materials of construction of the sewers, the wastewater treatment process employed, capacity of the wastewater treatment facilities, degree of treatability of the sewage in the wastewater treatment facility, and other pertinent factors.

(1)

General prohibitions. An industrial user shall not introduce into a WWF any pollutant which causes pass through or interference. These general prohibitions and the specific prohibitions below apply to each industrial user introducing pollutants.

(2)

Specific prohibitions. The following limitations or restrictions on materials or characteristics of sewage or water discharged to the sewers which shall not be violated without approval of the board are as follows:

a.

Any liquid or vapor having a temperature higher than 150°F (65°C) or which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the introduction into the treatment plant to exceed 104 degrees F (40 degrees C).

b.

Any water or waste which contains more than 100 milligrams per liter by weight of fat, oil or grease.

c.

Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid or gas.

d.

Any garbage that has not been properly shredded. Garbage grinders may be connected to sanitary sewers from homes, hotels, institutions, restaurants, hospitals, catering establishments, or similar places where garbage originates from the preparation of food in kitchens for the purpose of consumption on the premises or when served by caterers.

e.

Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage facilities such as, but not limited to, ashes, bones, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.

f.

Any waters or wastes having a pH lower than 5.5 or greater than 9.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage system.

g.

Any waters or wastes containing a toxic or poisonous substance or any other materials in sufficient quantity to injure or interfere with any wastewater treatment process, or constitute a hazard to humans or animals, or create any hazard in the receiving waters of the wastewater treatment plant.

h.

Any waters or sewage containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the wastewater treatment plant.

i.

Any noxious or malodorous gas or substance capable of creating a public nuisance.

j.

Any waters or wastes having a biochemical oxygen demand in excess of 300 milligram per liter.

k.

Any water or sewage containing more than 200 milligram per liter of suspended solids which shall include such materials as in subparagraph (b) above.

l.

Any waters or sewage having an objectionable color which is not removable in the existing wastewater treatment plant processes.

m.

Any unpolluted water or unpolluted sewage (ground water, i.e. well point water, roof runoff, subsurface drainage, deionized water, non-contact cooling water, unless specifically authorized by permit).

n.

Any radioactive sewage or isotopes of such half-life or concentrations as may exceed limits established in compliance with applicable state or federal regulations.

o.

Any waters or sewage containing odor-producing substances exceeding limits which may be established by the board.

p.

Quantities of flow, concentrations, or both which constitute a "slug" as defined.

q.

Waters or sewage containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amenable to treatment only to such degree that the wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.

r.

Any water or sewage which, by interaction with other water or sewage in the public sewer system, release obnoxious gases, form solids which interfere with the collection system, or create a condition deleterious to structures and wastewater treatment processes.

s.

Sewage containing constituents in concentrations which are in excess of the concentrations set for normal sewage (300 mg/l BOD, and 200 mg/l TSS, 30 mg/l TKN, 15 mg/l phosphorous).

t.

Pollutants which create a fire or explosion hazard in the WWF.

u.

Heat in amounts which will inhibit biological activity in the WWF resulting in interference. Wastewater having a temperature greater than 150 degrees F (51.7 degrees C), or which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the introduction into the treatment plant to exceed 104 degrees F (40 degrees C).

v.

Petroleum oil, non-biodegradable cutting oil or products of mineral oil origin in amounts that will cause interference or pass through.

w.

Any trucked or hauled pollutants, except at discharge points designated by the county.

x.

Wastewater which impairs color and cannot be removed by the treatment process, or impairs the treatment process, such as but not limited to, dye wastes and vegetable tanning solutions, which consequently imparts color to the treatment plant's effluent.

y.

Sludges, screenings or other residues from the pretreatment of industrial wastes.

z.

Medical wastes, except as specifically authorized by permit.

aa.

Detergents, surface-active agents, or other substances which might cause excessive foaming.

bb.

Wastewater causing two readings on an explosion hazard meter at the point of discharge into the POTW, or at any point in the POTW, or more than 10 percent of the lower explosive limit of the meter.

cc.

Pollutants, including oxygen demanding pollutants (BOD, etc.), released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with the POTW;

( Ord. No. 16-16 , § 1, 9-6-16)