A. Wastewater Discharge; Treatment Required: It shall be unlawful for any person to discharge into any natural waterway or any surface drainage within the town, or in any area under the jurisdiction of the town, any wastewater unless suitable treatment of such wastewater has been provided in accordance with the provisions of these rules and regulations and applicable county, state or federal regulations.
B. Prohibited Wastes: It shall be a violation of these rules and regulations and unlawful under federal law for any person to discharge or deposit or cause or allow to be discharged or deposited into the wastewater treatment facility of the town any waste or wastewater which contains the following:
1. Individual wastewater disposal system wastes from septic tanks, cesspools, holding tanks, privy vaults, sand and grease traps or similar devices.
2. Stormwater drainage from ground, surface, roof headers, catch basins, unroofed area drains (e.g., commercial car washing facilities) or any other source.
3. Other water, including, but not limited to, underground drains, sump pump discharges, natural springs, seeps, wetlands outflows and water accumulated in excavations or any other water associated with construction.
4. Inert suspended solids or other inert particulate matter, such as, but not limited to, fuller's earth, lime slurries, and paint residues, resulting in wastewater with settleable solids concentration greater than fifteen milliliters per liter (15 ml/l).
5. Unusual concentrations of dissolved solids that may, alone or in conjunction with discharges from other users, cause the POTW effluent to exceed water quality criteria for the pollutant in question.
6. Oil and grease of the following concentrations, sources and nature:
a. Wastewater containing total grease and oil in excess of one hundred milligrams per liter (100 mg/l) concentration as measured by Soxhlet extraction set forth in the most recent edition of "Standard Methods For The Examination Of Water And Wastewater" or "U.S. EPA Manual Of Methods For Chemical Analysis Of Water And Wastes".
b. Wastewater containing more than twenty five milligrams per liter (25 mg/l) petroleum, as measured as hydrocarbons by Soxhlet extraction, or other approved method set out in "Standard Methods For The Examination Of Water And Wastewater". Evidence of oil or grease in wastewater shall be based upon instantaneous or "grab" samples.
7. Explosive mixtures consisting of liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the wastewater treatment system or to the operation of the system. At no time shall two (2) successive readings on an explosive hazard meter at the point of discharge into the wastewater system be more than five percent (5%) nor may any single reading be over ten percent (10%) of the lower explosive limit (LEL) of the meter. Prohibited materials include, but are not limited to: gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, and sulfides. Waste streams at the point of discharge are prohibited if they have a closed cup flashpoint of less than sixty degrees centigrade (60°C) (140°F) using test methods specified in 40 CFR part 261.21.
8. Noxious material consisting of noxious or malodorous solids, liquids or gases, which, either singly or by interaction with other wastes, are capable of creating a public nuisance or hazard to life, or are or may be sufficient to prevent entry into any portion of the wastewater system for its maintenance and repair.
9. Improperly shredded garbage that has not been ground or comminuted to such a degree that all particles will be carried freely in suspension under flow conditions normally prevailing in the wastewater system to which the user is connected. At all times, no particle shall be greater than one-half inch (1/2") in any direction.
10. Radioactive wastes or isotopes of such a half-life or concentration that they do not meet regulations set forth by the Colorado Department of Health, in the latest edition of Rules and Regulations Pertaining to Radiological Control.
11. Solid, viscous, or liquid wastes which allow or may cause obstruction to the flow in a collection line or otherwise interfere with the proper operation of the wastewater treatment system. Prohibited materials include, but are not limited to: grease, uncomminuted garbage, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, wastepaper, wood, plastic, tar, asphalt residues, residues from refining or processing fuel or lubrication oil and similar substances.
12. Toxic substances in amounts exceeding standards promulgated by the Administrator of the United States Environmental Protection Agency pursuant to section 307(a) of the act, and chemical elements or compounds, phenols or other taste- or odor-producing substances, or any other substances, including metals which are not susceptible to treatment or which may interfere with the biological processes or efficiency of the treatment system or which will be transmitted through the stem to receiving water, as may be measured by failure of a biomonitoring toxicity test.
13. Substances which are not amenable to treatment of prescribed reduction by the treatment process employed by the wastewater department, or are amenable to such a limited degree of reduction that a discharge of such wastewater would result in an interference with the wastewater treatment works or pass through the treatment facilities such that the effluent discharge from the treatment works does not meet requirements of state, federal and other agencies having jurisdiction over discharge or application to receiving waters and/or lands.
14. Waste with color not removable by the treatment process.
15. Corrosive wastes which will cause corrosion, deterioration or interference of the wastewater system.
16. All wastewater discharged into the wastewater system must have an instantaneous pH value in the range of five and one- half (5.5) to ten (10) standard units.
a. A more stringent range of acceptable wastewater effluent pH identified in applicable National Categorical Pretreatment Standards shall supersede the range noted herein.
b. Where a continuous pH recording monitor has been installed by the user and approved by the QMM, pH compliance with these applicable sections may also be determined by records inspection indicating effluent pH within the applicable range for a period exceeding ninety percent (90%) of the user's operating day.
17. Spent process chemicals, solutions or materials, hazardous waste as defined by the Federal Resource Conservation and Recovery Act, and other materials normally used in industrial/commercial operations unless specifically authorized in writing by the QMM and after suitable treatment as approved by the QMM has been effected.
18. Hospital wastes. Hospitals, clinics, offices of medical doctors, and convalescent homes shall not dispose of laboratory pathological wastes, surgical operating room wastes or delivery room wastes by discharge through or to the wastewater system.
19. Biocides as determined by the QMM in concentrations exceeding 0.02 mg/l unless approved in writing by the QMM.
20. Any pollutant, including oxygen demanding pollutants or slug concentrations (e.g., BOD) released in a discharge at a flow rate and/or pollutant concentration which will cause interference with the POTW.
21. Heat in amounts which will inhibit biological activity in the POTW resulting in interference but in no case heat in such quantities that the temperature at the POTW treatment plant exceeds forty degrees centigrade (40°C) (105°F).
22. Any trucked or hauled pollutants, except at discharge points designated by the POTW.
23. Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems.
C. Wastewater Discharge; Limitations: It shall be unlawful for any person to discharge or deposit or cause or allow to be discharged or deposited into the wastewater facilities of the town, any waste or wastewater which fails to comply with the limitations imposed by this article.
D. Point Of Discharge; Limitations: It shall be unlawful for any person to discharge any substance directly into a manhole or other opening in the wastewater treatment system other than through an approved service line. Liquid wastes from chemical toilets and trailers, campers or other recreational vehicles which have been collected and/or held in tanks or other containers shall not be discharged into the wastewater system.
E. Disposal; Limitations: It shall be unlawful for any person to dispose of wastes into the wastewater system where such wastes have been collected and/or held in a tank or other container and where such wastes fail to comply with any limitation set out in this article. (Ord. 212, 8-3-1999)