A. Prohibited Substances:
1. No person shall discharge or cause to be discharged any storm water, surface water, ground water, roof runoff, subsurface drainage, cooling water or unpolluted industrial process waters to any sanitary sewer.
2. Except as provided in this Section, no person shall discharge or cause to be discharged any of the following described waters or wastes into any public sewer:
a. Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit (150°F).
b. Any water or waste which may contain more than fifty parts per million (50 ppm) 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.
e. Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch manure, grits such as brick, cement, onyx, carbide 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 sewer works.
f. Any waters or wastes having a pH lower than five and one-half (51/2) or higher than nine (9), or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works.
g. 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.
h. 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.
i. Any noxious or malodorous gas or substance capable of creating a public nuisance. (1986 Code § 15-5-1)
B. Interceptors; When Required:
1. Grease, oil and sand interceptors shall be provided when, in the opinion of the Sewer 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, except that such interceptors shall not be required for private living quarters or dwelling units.
2. All interceptors shall be of a type and capacity approved by the Sewer Department and shall be located as to be readily and easily accessible for cleaning and inspection.
3. Grease and oil interceptors shall be constructed of impervious material 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 gas tight and watertight.
4. Where installed, all grease, oil and sand interceptors shall be maintained by the owner, at his expense, in continuously efficient operation at all times. (1986 Code § 15-5-2)
C. Specific Waters And Wastes; Authority Of Department: The admission into the public sewers of any waters or wastes having any of the following characteristics shall be subject to the review and approval of the Sewer Department:
1. A five (5) day biochemical oxygen demand (BOD) greater than three hundred parts per million (300 ppm) by weight.
2. Containing more than three hundred fifty parts per million (350 ppm) by weight of suspended solids.
3. Containing any quantity of substance having the characteristics described in subsection A of this Section.
4. Having an average daily flow of greater than two percent (2%) of the average daily sewage flow of the Town. (1986 Code § 15-5-3)
D. Preliminary Treatment:
1. When Required: Where necessary, in the opinion of the Sewer Department, the owner shall provide, at his expense, such preliminary treatment as may be necessary to:
a. Reduce the BOD to three hundred parts per million (300 ppm) and the suspended solids to three hundred fifty parts per million (350 ppm) by weight.
b. Reduce objectionable characteristics or constituents to within the maximum limits provided for in subsection C of this Section.
c. Control the quantities and rates of discharge of such waters or wastes.
2. Approval: Plans, specifications and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for approval of the Sewer Department and the State Department of Health Services. No construction of such facilities shall be commenced until such approvals are obtained in writing.
3. Maintenance Of 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. (1986 Code § 15-5-4)
E. Manholes: When required by the Sewer Department, the owner of any property served by a building sewer carrying industrial wastes shall install a suitable control manhole in the building sewer to facilitate observation and sampling of wastes. Such manhole, when required, shall be accessible and safely located and shall be constructed in accordance with plans approved by the Sewer 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. (1986 Code § 15-5-5)
F. Special Agreements With Industrial Concerns: No statement contained in this Chapter shall be construed as preventing any special agreement or arrangement between the Town and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the Town for treatment, subject to payment therefor by the industrial concern. (1986 Code § 15-5-6)