Section 134-4 PROHIBITED DISCHARGE STANDARDS.

A. No user, industrial or domestic, shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will cause interference pass-through or violation of water quality standards. These general prohibitions apply to all users of the municipal wastewater system whether or not the use is subject to the Categorical Pretreatment Standards or to any other national, state or local pretreatment standards or requirements. Furthermore, no use may contribute any of the following substances to the municipal wastewater system:

1. Any 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 way to the municipal wastewater system. Included in this prohibition are waste streams with a closed-cup flashpoint of less than one hundred forty degrees Fahrenheit (140 ° F.) [sixty degrees Celsius (60 ° C.)]. At no time shall two (2) successive readings on an explosion hazard meter at the point of discharge into the system or at any point in the system be more than five percent (5%) nor 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.

2. Solid or viscous substances in amounts which will cause interference with the flow in a sewer, but in no case solids greater than one-half (1/2) inch [one and twenty-seven hundredths (1.27) centimeters] in any dimension.

3. Any water or waste which contains wax, grease, oil, plastic or other substances that will solidify or become discernibly viscous at temperatures between thirty-two degrees and one hundred fifty degrees Fahrenheit (32 ° and 150 ° F.).

a. When it has been determined by the Director of Public Works, or his authorized agent, that any restaurant is discharging grease into the sewer system which results in interference to the sewer line, including backup or maintenance work not otherwise necessary, then a sewer surcharge shall be added to the utility bill for that restaurant. The sewer surcharge shall be equal to the amount of the maintenance costs incurred by the town in eliminating the grease deposits from the sewer system, but in any event shall not be less than two hundred fifty dollars ($250).

b. Prior to the initial assessment of the sewer surcharge, the owner or operator of such restaurant shall be notified, in writing, of the Director of Public Work's determination. The owner or operator of said restaurant shall then be granted thirty (30) days in which to permanently correct and abate the condition causing the grease to be discharged into the sewer system. Unless the discharge of grease is then permanently eliminated, the initial sewer surcharge shall be assessed ten (10) days thereafter. No restaurant shall be entitled to more than one (1) such notice and grace period in which to correct the condition. The change in management or ownership shall not operate to give an existing restaurant facility an additional grace period in which to correct the condition.

c. Thereafter, any further discharge of grease into the sewer system by the restaurant facility which, in the determination of the Director of Public Works, creates a condition requiring maintenance to eliminate the grease deposit shall result in the assessment of a sewer surcharge without further notice or grace. Sewer surcharge shall continue to be assessed until the grease discharge condition has been permanently corrected to the satisfaction of the Town.

4. Any wastewater having a pH less than six point zero (6.0) or more than nine point zero (9.0) or which otherwise causes corrosive structural damage to the system, Town personnel or equipment.

5. Any wastewater containing pollutants, including oxygen-demanding pollutants (BOD, etc), in sufficient quantity (flow or concentration), either singly or by interaction with other pollutants, to pass through or interfere with the municipal wastewater system or any wastewater treatment or sludge process or constitute a hazard to humans or animals.

6. Any pollutant which will cause interference or pass through, including any toxic substances in amounts exceeding standards promulgated by the United States Environmental Protection Agency pursuant to Section 307(a) (33 U.S.C. Section 1317(a) and chemical elements or compounds, phenols or other taste or odor-producing substances or other substances which are not susceptible to treatment or which may interfere with the biological processes or efficiency of the wastewater treatment system, or that will pass through the system.

7. Any noxious or malodorous liquids, gases or solids or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for maintenance and repair.

8. Any substance which may cause the treatment plant effluent or any other residues, sludges or scums to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case shall a substance discharged to the system cause the Town to be in noncompliance with sludge use or disposal regulations or permits issued under Section 405 of the Act, the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act or other state requirements applicable to the sludge use and disposal practices being used by the Town.

9. Any wastewater which imparts color which cannot be removed by 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, thereby violating the Town's NPDES permit. Color (in combination with turbidity) shall not cause the treatment plant effluent to reduce the depth of the compensation point for photosynthetic activity by more than ten percent (10%) from the seasonably established norm for aquatic life.

10. Any wastewater having a temperature greater than one hundred fifty degrees Fahrenheit (150 ° ) [sixty-five degrees Celsius (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 one hundred four degrees Fahrenheit (104 ° F.) [forty degrees Celsius (40 ° C.)].

14. Stormwater, surface water, groundwater, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, cooling water and unpolluted industrial wastewater, unless specifically authorized by the Administrator.

15. Any industrial wastes containing floatable fats, waxes, grease or oils or which become floatable at the wastewater temperature at the introduction to the treatment plant during the winter season; but in no case industrial wastewater containing more than one hundred (100) mg/L of emulsified oil or grease.

20. Any wastewater causing the treatment plant effluent to show acute or chronic toxicity in excess of that allowed by Virginia State Water Control Law, using a percentage of the discharge and aquatic test species chosen by the Administrator.

23. All discharges of storm water, surface water, groundwater, roof runoff, subsurface drainage, or other waters not intended to be treated in the treatment facility, except as authorized by the Town.

B. Wastes prohibited by this section shall not be processed or stored in such a manner that these wastes could be discharged to the municipal wastewater systems. All floor drains located in process or materials storage areas must discharge to the industrial user's pretreatment facility before connecting with the system.

C. Wastewater survey. Upon request of the Administrator, all industrial users shall submit information as to the nature and characteristics of their wastewater. The Administrator shall prepare a form for this wastewater survey and may periodically require industrial users to update the wastewater survey, or update thereof, within thirty (30) days from receipt of the Administrator's request. Failure to complete the wastewater survey, or any update thereon, shall constitute a violation of this Article.