§ 67.1-2-1. Prohibited Discharge Standards.

(a)

General Prohibitions:

(1)

No User shall discharge or cause to be discharged into the POTW any pollutant(s) which will cause an Interference or a Pass Through or which is harmful to the health, safety or welfare of POTW personnel or the general public.

(2)

No User shall discharge industrial waste to the POTW except as specifically approved in writing by the Director.

(b)

Specific Prohibitions: No User shall discharge the following pollutants into the POTW:

(1)

Pollutants which may create a fire or explosive mixture in the POTW, including, but not limited to, wastestreams with a closed-cup flashpoint of less than 140ºF (60ºC) using the test method specified in 40 C.F.R. § 261.21. At no time shall either of two 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 nor any single reading over ten percent of the lower explosive limit (LEL) of the meter. Such pollutants 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)

Pollutants having a pH less than 5.0 or more than 12.0, or which could otherwise cause corrosive structural damage to the POTW. Such pollutants include, but are not limited to acids, sulfides, concentrated chloride and fluoride compounds and substances which will react with wastewater in the POTW to form acidic or alkaline products.

(3)

Solid or viscous substances in amounts which may cause obstruction of the flow in the POTW resulting in Interference, but in no case solids greater than one-half inch in any dimension. Prohibited materials include, but are not limited to, grease, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, cement, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, wastepaper, wood, plastics, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes.

(4)

Pollutants, including oxygen-demanding pollutants (BOD, COD, etc.) released in a discharge at a flow rate and/or concentration which, either singly or by interaction with other pollutants, will cause interference with or damage to the POTW.

(5)

Wastewater having a temperature greater than 150ºF (65.5° C), or which, due to its temperature, will inhibit biological activity in the treatment plant, but in no case wastewater which will cause the temperature of the wastewater entering the treatment plant to exceed 104° F (40° C).

(6)

Petroleum oil, non-biodegradable cutting oil, or products of mineral oil origin, in amounts that will cause an Interference or a Pass Through, or wastewater that exceeds concentrations greater than 100 ppm of these oils.

(7)

Pollutants which result in the presence of toxic gases, vapors or fumes within the POTW in a quantity that may be injurious to the public health, safety and welfare.

(8)

Trucked or hauled pollutants, except at discharge points designated by the Director in accordance with § 67.1-3-5.

(9)

Wastewater containing any noxious or malodorous liquids, gases, solids or other pollutant which, either alone or by interaction with other pollutants, is sufficient to create a public nuisance or hazard to life or is sufficient to prevent the safe entry of the POTW by maintenance and repair personnel.

(10)

Wastewater having color characteristics which cannot be removed by the treatment process, including but not limited to dye wastes and vegetable tanning solutions, or wastewater which imparts sufficient color to the POTW's effluent to violate the VPDES or NPDES permits.

(11)

Wastewater containing any radioactive wastes or isotopes of such half-life or concentration as to violate the limits established by applicable County, State or Federal regulations, including but not limited to 12 Va. Admin. Code 5-481 and 10 C.F.R. § 20.2003.

(12)

Storm water, surface water, ground water, roof runoff, subsurface drainage, swimming pool drainage, non contact cooling water, and unpolluted water except as specifically authorized by the Director.

(13)

Medical wastes, except as specifically authorized by the Director.

(14)

Hazardous wastes, as defined by 40 C.F.R., Part 261, except as may be specifically authorized by the Director.

(15)

Pollutants discharged to the POTW other than by an approved building sewer connection or discharge point.

(16)

Wastes which are economically recyclable, including antifreeze (ethylene glycol), as determined by the Director.

(17)

Detergents, surface-active agents, or other substances that might cause excessive foaming at the POTW.

(18)

Sludges, screenings, or other residuals from pretreatment of industrial wastes.

(19)

Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test or other pollutant compliance requirements.

(c)

The pollutants prohibited by this Section shall not be processed or stored in such a manner that they could be discharged to the POTW. All floor drains located in process or materials storage areas must flow to the Industrial User's pretreatment facility before connecting with the POTW, unless an alternate system is approved by the Director.

(44-09-67.1; 31-10-67.1.)

(44-09-67.1; 31-10-67.1.)