Chapter 13.22


13.22.010    Drainage into sanitary sewers prohibited.

13.22.020    Types of wastes prohibited.

13.22.030    Determination of specific waste quantities.

13.22.040    Hospital wastes.

13.22.050    Interceptors required.

13.22.060    Maintenance of interceptors.

13.22.070    Preliminary treatment of wastes.

13.22.080    Maintenance of pretreatment facilities.

13.22.090    Control manholes.

13.22.100    Measurements and tests.

13.22.110    Special agreements.

13.22.010 Drainage into sanitary sewers prohibited.

No leaders from roofs and no surface drains for rain water shall be connected to any sanitary sewer. No surface or sub-surface drainage, rain water, storm water, seepage, cooling water or unpolluted industrial process waters shall be permitted to enter any sanitary sewer by any device or method whatsoever. (Ord. 525 (A), 1976)

13.22.020 Types of wastes prohibited.

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 150º F.;

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

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

4.    Any garbage that has not been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than one-half inch in any dimension;

5.    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;

6.    Any wastes with a pH high enough to cause alkaline incrustation on sewer walls;

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 human or animals, create any a hazard in the receiving waters of the sewage treatment plant, or cause a public nuisance;

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

9.    Waste not conforming to Section 13.22.070;

10.    Any solids or viscous substances of such size or in such quantity that they may cause obstruction to flow in the sewer or be detrimental to proper wastewater treatment plant operations. These objectionable substances include, but are not limited to, asphalt, dead animals, offal, ashes, sand, mud, straw, industrial process shavings, metal, glass, rags, feathers, tar, plastics, wood, whole blood, paunch manure, bones, hair and fleshings, entrails, paper dishes, paper cups, milk containers, or other similar paper products, either whole or ground;

11.    Any rain water, storm water, groundwater, street drainage, sub-surface drainage, roof drainage, yard drainage, water from yard fountains, ponds or lawn sprays or any other uncontaminated water;

12.    Any water added for the purpose of diluting wastes which would otherwise exceed applicable maximum concentration limitations;

13.    Any nonbiodegradable cutting oils, commonly called soluble oil, which form persistent water emulsions;

14.    Any excessive concentrations of nonbiodegradable oil, petroleum oil or refined petroleum products;

15.    Any waste with an excessively high concentration of cyanide;

16.    Any unreasonably large amounts of undissolved or dissolved solids;

17.    Any wastes containing over 0.1 milligram/liter of dissolved sulfides;

18.    Any substance promoting or causing the promotion of toxic gases;

19.    Any wastes requiring an excessive quantity of chlorine or other chemical compound used for disinfection purposes;

20.    Any excessive amounts of chlorinated hydrocarbon or organic phosphorus type compounds;

21.    Any excessive amounts of deionized water, steam condensate or distilled water;

22.    Any waste containing substances that may precipitate, solidify or become viscous at temperatures between 50º F. and 100º F.;

23.    Any wastes containing excessive quantities of iron, boron, chromium, phenols, plastic resins, copper, nickel, zinc, lead, mercury, cadmium, selenium arsenic or any other objectionable materials toxic to humans, animals, the local environment or to biological or other wastewater treatment processes;

24.    Any blow-down or bleed water from cooling towers or other evaporative coolers exceeding one-third of the makeup water;

25.    Any single pass cooling water;

26.    Any excessive quantities of radioactive material wastes;

27.    Recognizable portions of the human anatomy;

28.    Discharge from salt (sodium chloride) regenerated water softeners;

29.    Swimming pool contents. (Ord. 525 (B), 1976)

13.22.030 Determination of specific waste quantities.

No person shall discharge or cause to be discharged to any public sewer which directly or indirectly connects to the district’s sewerage system any wastes, if in the opinion of the council such wastes may have an adverse or harmful effect on sewers, maintenance personnel, wastewater treatment plant personnel or equipment, treatment plant effluent quality, public or private property, or may otherwise endanger the public, the local environment or create a public nuisance. The council, in determining the acceptability of specific wastes, shall consider the nature of the waste and the adequacy and nature of the collection, treatment and disposal system available to accept the waste.

The council shall from time to time prepare a list of the maximum permissible quantities or concentrations of certain constituents in industrial wastewater flows and otherwise issue detailed directions for meeting the requirements of this section. (Ord. 525 (C), 1976)

13.22.040 Hospital wastes.

A.    Hospitals, clinics, offices of medical doctors, and convalescent homes:

1.    May discharge, through a district approved grinder installation with inlet size and design features suitable for its intended use and so constructed that all particles pass through a maximum three-eighths inch opening, wastes of the following categories:

a.    Wet organic kitchen wastes from food preparation and disposal but excluding all paper and plastic items,

b.    Disposable hypodermic needles, syringes and associated articles following their use,

c.    Infectious wastes, defined as:

i.    Laboratory and surgical operating room wastes except as excluded in subsection (A)(2)(b) of this section,

ii.    Wastes from outpatient areas and emergency rooms similar to those included in subsection (A)(1) of this section,

iii.    Equipment, instruments, utensils and other materials of a disposable nature that may harbor or transmit pathogenic organisms and that are used in the rooms of patients having a suspected or diagnosed communicable disease which by the nature of the disease is required to be isolated by public health agencies;

2.    Shall not discharge to the sewer by any means:

a.    Solid wastes generated in the rooms of patients who are not isolated because of a suspected or diagnosed communicable disease,

b.    Recognizable portions of the human anatomy,

c.    Wastes excluded by other provisions of this chapter except as specifically permitted in subsection (A)(1) of this section above,

d.    All solid wastes not included in subsection (A)(1) of this section.

B.    Nothing in this section shall be construed to limit the authority of the health officer of Lake County to defined wastes as being infectious and, with the concurrence of the council, to require that they be discharged to the sewer. (Ord. 525 (D), 1976)

13.22.050 Interceptors required.

Grease, oil and sand interceptors shall be provided when in the opinion of the council, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand, and other harmful ingredients; except that such interceptors shall not be required for buildings used for residential purposes. All interceptors shall be a type and capacity approved by the council, and shall be so located as to be readily and easily accessible for cleaning and inspection. (Ord. 525 (E), 1976)

13.22.060 Maintenance of interceptors.

All grease, oil and sand interceptors shall be maintained by the owner, at his expense, in continuously efficient operation at all times. (Ord. 525 (F), 1976)

13.22.070 Preliminary treatment of wastes.

The admission into the public sewers of any waters or wastes having (a) five-day biochemical oxygen demand greater than three hundred parts per million by weight, or (b) containing more than three fifty parts per million by weight of suspended solids, or (c) containing any quantity of substance having the characteristics described in Section 13.22.020, or (d) having an average daily flow greater than two percent of the average daily sewage flow of the district, shall be subject to the review and approval of the council.

Where necessary in the opinion of the council, the owner shall provide, at his expense, such preliminary treatment as may be necessary to, (a) reduce the biochemical oxygen demand to three hundred parts per million and the suspended solids to three hundred fifty parts per million by weight, or (b) reduce objectionable characteristics or constituents to within the maximum limits provided for in Section 13.22.020, or (c) control the quantities and rates of discharge of such waters or wastes.

Plans, specifications, and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the council and no construction of such facilities shall be commenced until said approvals are obtained in writing. (Ord. 525 (G), 1976)

13.22.080 Maintenance of pretreatment facilities.

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. (Ord. 525 (H), 1976)

13.22.090 Control manholes.

When required by the council, the owner of any property served by a side sewer carrying industrial wastes, shall install a suitable control manhole in the side sewer to facilitate observation, sampling and measurement of wastes. Such manhole, when required, shall be accessibly and safely located, and shall be constructed in accordance with plans approved by the district. 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. (Ord. 525 (I), 1976)

13.22.100 Measurements and tests.

All measurements, tests, and analyses of the characteristics of waters and wastes to which reference is made in Sections 13.22.020 and 13.22.070 shall be determined in accordance with standard methods and shall be determined at the control manhole provided for in Section 13.22.090, or upon suitable samples 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 side sewer is connected. (Ord. 525 (J), 1976)

13.22.110 Special agreements.

No statement contained in this article shall be construed as preventing any special agreement or arrangement between the district and any industrial waste of unusual strength or character may be accepted by the district for treatment, subject to payment therefor by the industrial concern and subject to such terms and conditions as might be required by district. (Ord. 525 (K), 1976)