Township of Hempfield, PA Article VIII General Use Requirements

§ 67-27 Prohibited discharge standards.

A. General prohibitions. No user shall introduce or cause to be introduced into the POTW any pollutant or wastewater which causes pass-through or interference. These general prohibitions apply to all users of the POTW, whether or not they are subject to categorical pretreatment standards or any other national, state or local pretreatment standards or requirements.

B. Specific prohibitions. No user shall introduce or cause to be introduced into the POTW the following pollutants, substances or wastewater:

(1) Pollutants which create a fire or explosive hazard in the POTW, including but not limited to wastestreams with a closed-cup flashpoint of less than 140° F. (60° C.) using the test methods specified in 40 CFR 261.21.

(2) Wastewater having a pH less than 5.0 or otherwise causing corrosive structural damage to the POTW or equipment.

(3) Solid or viscous substances in amounts which will cause obstruction of the flow in the POTW resulting in interference.

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

(5) Wastewater having a temperature 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 104° F. (40° C.).

(6) Petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin, in amounts that will cause interference or pass-through.

(7) 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.

(8) Trucked or hauled pollutants, except at discharge points designated by the Manager in accordance with § 67-34 of this chapter.

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

(10) 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 Greater Greensburg Sewage Authority's NPDES permit.

(11) Wastewater containing any radioactive wastes or isotopes except in compliance with applicable state or federal regulations.

(12) Stormwater, surface water, groundwater, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water and unpolluted wastewater, unless specifically authorized by the Manager.

(13) Sludges, screenings or other residues from the pretreatment of industrial wastes.

(14) Medical wastes, except as specifically authorized by the Manager in a wastewater discharge permit.

(15) Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test.

(16) Detergents, surface-active agents or other substances which may cause excessive foaming in the POTW.

C. Pollutants, substances or wastewater prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the POTW.

§ 67-28 National categorical pretreatment standards.

The categorical pretreatment standards found at 40 CFR Chapter I, Subchapter N, Parts 405-471 are hereby incorporated.

A. Where a categorical pretreatment standard is expressed in terms of either the mass or the concentration of a pollutant in wastewater, the Manager may impose equivalent concentration or mass limits in accordance with 40 CFR 403.6(c).

B. When wastewater subject to a categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the Manager shall impose an alternate limit using the combined wastestream formula in 40 CFR 403.6(e).

C. A user may obtain a variance from a categorical pretreatment standard if the user can prove, pursuant to the procedural and substantive provisions in 40 CFR 403.13, that factors relating to its discharge are fundamentally different from the factors considered by the EPA when developing the categorical pretreatment standard.

D. A user may obtain a net gross adjustment to a categorical standard in accordance with 40 CFR 403.15.

§ 67-29 Right of revision.

The Township reserves the right to establish by ordinance, and Greater Greensburg Sewage Authority reserves the right to establish by wastewater discharge permits, more stringent standards or requirements on discharges to the POTW.

§ 67-30 Dilution.

No user shall ever increase the use of process water or in any way attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with a discharge limitation unless expressly authorized by an applicable pretreatment standard or requirement. The Manager may impose mass limitations on users who are using dilution to meet applicable pretreatment standards or requirements or in other cases when the imposition of mass limitations is appropriate.