Unless a provision explicitly states otherwise, the following
terms and phrases, as used in this article, shall have the meanings
hereinafter designated.
Shall is mandatory; may is permissive or directory.
Act or “The Act.”
The Federal Water Pollution Control Act, also known as the
Clean Water Act, as amended, 33 U.S.C. section 1251 et seq.
Authorized representative of the user.
(1)
If the user is a corporation:
(A)
The president, secretary, treasurer, or a vice-president of
the corporation in charge of a principal business function, or any
other person who performs similar policy or decision-making functions
for the corporation; or
(B)
The manager of one or more manufacturing, production, or operation
facilities employing more than two hundred fifty (250) persons or
having gross annual sales or expenditures exceeding twenty-five (25)
million dollars (in second-quarter 1980 dollars), if authority to
sign documents has been assigned or delegated to the manager in accordance
with corporate procedures.
(2)
If the user is a partnership or sole proprietorship: a general
partner or proprietor, respectively.
(3)
If the user is a federal, state, or local governmental facility:
a director or highest official appointed or designated to oversee
the operation and performance of the activities of the government
facility, or their designee.
(4)
The individuals described in subsections
(1) through
(3) above, may designate another authorized representative if the authorization is in writing, the authorization specifies the individual or position responsible for the overall operation of the facility from which the discharge originates or having overall responsibility for environmental matters for the company, and the written authorization is submitted to the city.
Categorical pretreatment standard or categorical standard.
Any regulation containing pollutant discharge limits promulgated
by EPA in accordance with sections 307(b) and (c) of the act (33 U.S.C.
section 1317) which apply to a specific category of users and which
appear in 40 CFR chapter I, subchapter N, parts 405–471.
Composite sample.
Composite sample means samples collected during a period
of time exceeding fifteen minutes and combined into one sample.
Control authority.
The operator of any part of the POTW if different from the
city, e.g., the City of Dallas Water Utilities.
Environmental Protection Agency or EPA.
The U.S. Environmental Protection Agency or, where appropriate,
the Regional Water Management Division Director, or other duly authorized
official of said agency.
Existing source.
Any source of discharge, the construction or operation of
which commenced prior to the publication by EPA of proposed categorical
pretreatment standards, which will be applicable to such source if
the standard is thereafter promulgated in accordance with section
307 of the act.
Grab sample.
A sample which is taken from a wastestream without regard
to the flow in the wastestream and over a period of time not to exceed
fifteen (15) minutes.
Indirect discharge or discharge.
The introduction of pollutants into the POTW from any nondomestic
source regulated under section 307(b), (c), or (d) of the act.
Industrial user.
Industrial user means an industry that discharges wastewater
into the wastewater system.
Instantaneous maximum allowable discharge limit.
The maximum concentration of a pollutant allowed to be discharged
at any time, determined from the analysis of any discrete or composited
sample collected, independent of the industrial flow rate and the
duration of the sampling event.
Interference.
A discharge, which alone or in conjunction with a discharge
or discharges from other sources, inhibits or disrupts the POTW, its
treatment processes or operations or its sludge processes, use or
disposal; and therefore, is a cause of the prevention of sewage sludge
use or disposal in compliance with any of the following statutory/regulatory
provisions or permits issued thereunder, or any more stringent state
or local regulations: section 405 of the act; the Solid Waste Disposal
Act, including title II commonly referred to as the Resource Conservation
and Recovery Act (RCRA); any state regulations contained in any state
sludge management plan prepared pursuant to subtitle D of the Solid
Waste Disposal Act; the Clean Air Act; the Toxic Substances Control
Act; and the Marine Protection, Research, and Sanctuaries Act.
Medical waste.
Isolation wastes, infectious agents, human blood and blood
products, pathological wastes, sharps, body parts, contaminated bedding,
surgical wastes, potentially contaminated laboratory wastes, and dialysis
wastes.
New source.
(1)
Any building, structure, facility, or installation from which
there is (or may be) a discharge of pollutants, the construction of
which commenced after the publication of proposed pretreatment standards
under section 307(c) of the act which will be applicable to such source
if such standards are thereafter promulgated in accordance with that
section, provided that:
(A)
The building, structure, facility, or installation is constructed
at a site at which no other source is located;
(B)
The building, structure, facility, or installation totally replaces
the process or production equipment that causes the discharge of pollutants
at an existing source; or
(C)
The production or wastewater generating processes of the building,
structure, facility, or installation are substantially independent
of an existing source at the same site. In determining whether these
are substantially independent, factors such as the extent to which
the new facility is integrated with the existing plant, and the extent
to which the new facility is engaged in the same general type of activity
as the existing source, should be considered.
(2)
Construction on a site at which an existing source is located results in a modification rather than a new source if the construction does not create a new building, structure, facility, or installation meeting the criteria of subsection
(1)(B) or
(C) above but otherwise alters, replaces, or adds to existing process or production equipment.
(3)
Construction of a new source as defined herein has commenced
if the owner or operator has:
(A)
Begun, or caused to begin, as part of a continuous on-site construction
program:
(i)
Any placement, assembly, or installation of facilities or equipment;
or
(ii)
Significant site preparation work including clearing, excavation,
or removal of existing buildings, structures, or facilities which
is necessary for the placement, assembly, or installation of new source
facilities or equipment; or
(B)
Entered into a binding contractual obligation for the purchase
of facilities or equipment which are intended to be used in its operation
within a reasonable time. Options to purchase or contracts which can
be terminated or modified without substantial loss, and contracts
for feasibility, engineering, and design studies do not constitute
a contractual obligation under this subsection.
Noncontact cooling water.
Water used for cooling which does not come into direct contact
with any raw material, intermediate product, waste product, or finished
product.
Pass through.
A discharge of pollutants through the city’s wastewater
system into waters of the United States in quantities or concentrations
which, alone or in conjunction with a discharge or discharges from
other sources, is a cause, in whole or in part of a violation of any
discharge requirement of the city, including an increase in the magnitude
or duration of a violation.
Person.
Any individual, partnership, copartnership, firm, company,
corporation, association, joint stock company, trust, estate, governmental
entity, or any other legal entity; or their legal representatives,
agents, or assigns. This definition includes all federal, state, and
local governmental entities.
pH.
The logarithm (base 10) of the reciprocal of the hydrogen
ion concentration of a solution.
Pollutant.
Dredged spoil, solid waste, incinerator residue, filter backwash,
sewage, garbage, sewage sludge, munitions, chemical wastes, biological
materials, radioactive materials, heat, wrecked or discarded equipment,
rock, sand, cellar dirt, municipal, agricultural and industrial wastes,
and certain characteristics of wastewater (e.g., pH, temperature,
TSS, turbidity, color, BOD, COD, toxicity, or odor).
Pretreatment.
The reduction of the amount of pollutants, the elimination
of pollutants, or the alteration of the nature of pollutant properties
in wastewater prior to, or in lieu of, introducing such pollutants
into the POTW. This reduction or alteration can be obtained by physical,
chemical, or biological processes; by process changes; or by other
means, except by diluting the concentration of the pollutants unless
allowed by an applicable pretreatment standard.
Pretreatment requirements.
Any substantive or procedural requirement related to pretreatment
imposed on a user, other than a pretreatment standard.
Pretreatment standards or standards.
Pretreatment standards shall mean pollutant concentration
discharge limitation requirements or standards, categorical pretreatment
standards, and local limits. National pretreatment standard means
any pretreatment regulations containing pollutant discharge limits
that have been established or will be established for industrial users
by the United States Environmental Protection Agency.
Publicly owned treatment works or POTW.
A “treatment works,” as defined by section 212
of the act (33 U.S.C. section 1292) which is owned by the city and/or
the control authority. This definition includes any devices or systems
used in the collection, storage, treatment, recycling, and reclamation
of sewage or industrial wastes of a liquid nature and any conveyances
which convey wastewater to a treatment plant.
Septic tank waste.
Any sewage from holding tanks such as vessels, chemical toilets,
campers, trailers, and septic tanks.
Sewage.
Human excrement and gray water (household showers, dishwashing
operations, etc.).
Significant industrial user.
(1)
A user subject to categorical pretreatment standards; or
(2)
A user that:
(A)
Discharges an average of twenty-five thousand (25,000) gpd or
more of process wastewater to the POTW (excluding sanitary, noncontact
cooling, and boiler blowdown wastewater);
(B)
Contributes a process wastestream which makes up five (5) percent
or more of the average dry weather hydraulic or organic capacity of
the POTW treatment plant;
(C)
Is designated as such by the superintendent or the control authority
on the basis that it has a reasonable potential for adversely affecting
the POTW’s operation or for violating any pretreatment standard
or requirement; or
(D)
Is defined as subject to National Categorical Pretreatment Standards
by the United States EPA.
(3)
Upon a finding that a user meeting the criteria in subsection
(2) has no reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement, the city and/or the control authority may at any time, on its own initiative or in response to a petition received from a user, and in accordance with procedures in 40 CFR 403.8(f)(6), determine that such user should not be considered a significant industrial user.
Slug load or slug.
Any discharge at a flow rate or concentration which could cause a violation of the prohibited discharge standards in section
13.05.003(a) of this article.
Stormwater.
Any flow occurring during or following any form of natural
precipitation, and resulting from such precipitation, including snowmelt.
Superintendent (superintendent of public works).
The person designated by the city to supervise the operation
of the wastewater collection system, and who is charged with certain
duties and responsibilities by this article, or a duly authorized
representative.
Suspended solids.
The total suspended matter that floats on the surface of,
or is suspended in, water, wastewater, or other liquid, and which
is removable by laboratory filtering.
Wastewater.
Liquid and water carried industrial wastes and sewage from
residential dwellings, commercial buildings, industrial and manufacturing
facilities, and institutions, whether treated or untreated, which
are contributed to the POTW.
(Ordinance 93-0909, sec. 1.4, adopted 9/9/93)