§ 205-7. Use of public sewers.

A. 

The sewers herein described and referred to are "sanitary sewers" and are to be used for that purpose only. No underfloor drains, sump pumps, roof downspouts or other such facilities shall be connected thereto. No other surface water of any kind or cooling water or unpolluted industrial process waters shall be drained into the sanitary sewers.

B. 

Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer:

(1) 

Any liquid or vapor having a temperature higher than 150° F.

(2) 

Any water or waste which may contain more than 100 parts per million, by weight, of fat, oil or grease.

(3) 

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

(4) 

Any garbage that has not been properly shredded.

(5) 

Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, manure, or any other solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works.

(6) 

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

(7) 

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

(8) 

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

(9) 

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

C. 

Grease, oil, and sand interceptors.

(1) 

Grease, oil, and sand interceptors shall be provided when, in the opinion of the Engineering Department, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand and other harmful ingredients. All interceptors shall be of a type and capacity approved by the Engineering Department, and shall be located as to be readily and easily accessible for cleaning and inspection.

(2) 

Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, watertight and equipped with easily removable covers which when bolted in place shall be gastight and watertight.

(3) 

Where installed, all grease, oil and sand interceptors shall be maintained by the owner, at his expense, in continuously efficient operation at all times.

D. 

Engineering Department review of certain discharges; pretreatment.

(1) 

The admission into the public sewers of any waters or wastes having a five-day biochemical oxygen demand greater than 300 parts per million by weight; containing more than 350 parts per million by weight of suspended solids; containing any quantity of substances having the characteristics described in § 205-7B; having an average daily flow greater than 2% of the average daily sewage flow of the district, shall be subject to the review and approval of the Engineering Department.

(2) 

Where necessary in the opinion of the Engineering Department the owner shall provide, at his expense, such preliminary treatment as may be necessary to:

(a) 

Reduce the biochemical oxygen demand to 300 parts per million and the suspended solids to 350 parts per million by weight.

(b) 

Reduce objectionable characteristics or constituents to within allowable limits.

(c) 

Control the quantities and rates of discharge of such waters or wastes.

(3) 

Plans, specifications, and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the Engineering Department and of the Erie County Health Department, and no construction of such facilities shall be commenced until said approvals are obtained in writing.

E. 

Where preliminary treatment facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation, by the owner at his expense.

F. 

When required by the Engineering Department, the owner of any property served by a house lateral carrying industrial wastes shall install a suitable control manhole in the house lateral to facilitate observation, sampling and measurement of the wastes. Such manhole, when required, shall be accessibly and safely located, and shall be constructed in accordance with plans approved by the Engineering Department. The manhole shall be installed by the owner at his expense, and shall be maintained by him so as to be safe and accessible at all times.

G. 

All measurements, tests, and analyses of the characteristics of waters and wastes to which reference is made in § 205-7B and D shall be determined in accordance with "Standard Methods for the Examination of Water and Sewage," and shall be determined at the control manhole provided for in § 205-7F, or upon suitable sample taken at said control manhole. In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the house lateral is connected.

H. 

No statement contained in this article shall be construed as preventing any special agreement or arrangement between the district and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the district for treatment.