Definitions.
Unless a provision explicitly states otherwise, the following
terms and phrases, as used in this subchapter, shall have the meanings
hereinafter designated.
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 OR DULY 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 operating
facilities, provided the manager is authorized to make management
decisions that govern the operation of the regulated facility including
having the explicit or implicit duty of making major capital investment
recommendations, and initiate and direct other comprehensive measures
to assure long term environmental compliance with environmental laws
and regulations; can ensure that the necessary systems are established
or actions taken to gather complete and accurate information for individual
wastewater discharge permit requirements; and where 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 paragraphs 1 through 3, above,
may designate a Duly 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.
BIOCHEMICAL OXYGEN DEMAND OR BOD.
The quantity of oxygen utilized in the biochemical oxidation
of organic matter under standard laboratory procedures for five (5)
days at 20 degrees centigrade, usually expressed as a concentration
(e.g., mg/l).
BEST MANAGEMENT PRACTICES OR BMPS.
The Schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to implement the prohibitions listed in §
53.041. BMPs include treatment requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw materials storage.
BYPASS.
The intentional diversion of wastestreams from any portion
of an IU’s pretreatment facility.
BUILDING SEWER.
The extension from the building drain to the public sewer
or other place of disposal (also called house lateral and house connection).
CARBONACEOUS BIOCHEMICAL OXYGEN DEMAND OR CBOD.
The quantity of oxygen in the absence of nitrogen utilized
in the biochemical oxidation of organic matter under standard laboratory
procedures for five (5) days at 20 degrees centigrade, usually expressed
as a concentration (e.g., mg/l)
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) that apply to a specific category of Users and that appear in 40 CFR Chapter
I, Subchapter N, Parts 405 471.
CITY.
The City of Pflugerville, Texas.
CITY MANAGER.
The Representative of the City who is charged with certain
duties and responsibilities by this subchapter, including signatory
responsibility. The term also means a Duly Authorized Representative
of the City Manager.
COMPOSITE SAMPLE.
A sample formed either by continuous sampling or by mixing
discrete samples. If discrete sampling is employed, at least 12 aliquots
should be composited. The sample may be composited either as a time
composite sample: composed of discrete sample aliquots collected at
constant time intervals providing a sample irrespective of stream
flow; or as a flow proportional composite sample: collected either
as a constant sample volume at time intervals proportional to flow,
or collected by increasing the volume of each aliquot as the flow
increases while maintaining a constant time interval between the aliquots.
For wastewater discharges consisting of a single batch discharge in
a 24-hour period, a grab sample of the batch discharge may be used
to represent the 24-hour composite quality of the wastewater, as long
as the batch is mixed prior to sample collection. For wastewater discharges
consisting of two or more batch discharges in a 24-hour period, the
24-hour composite quality of the wastewater may be determined via
compositing of one grab sample collected from the discharge of each
batch, as long as each batch is mixed prior to sample collection.
CONTROL MANHOLE.
A manhole giving access to a building sewer at some point
before the building sewer discharge mixes with other discharges in
the public sewer.
CONTROL POINT.
A point of access to a course of discharge before the discharge
mixes with other discharges in the public sewer.
DISCHARGER.
Any person who discharges or introduces anything other than
normal domestic sewage into the POTW. The term includes owners and/or
occupants of the premises connected to and discharging waste or wastewater
into the POTW.
DAILY MAXIMUM.
The arithmetic average of all effluent samples for a pollutant
collected during a calendar day.
DAILY MAXIMUM LIMIT.
The maximum allowable discharge limit of a pollutant during
a calendar day. Where Daily Maximum Limits are expressed in units
of mass, the daily discharge is the total mass discharged over the
course of the day. Where Daily Maximum Limits are expressed in terms
of a concentration, the daily discharge is the arithmetic average
measurement of the pollutant concentration derived from all measurements
taken that day.
END OF PIPE.
The point where the wastewater is discharged to the POTW.
TBLLs are assessed at the end of pipe, which is after any pretreatment
unit. Sampling locations are designated in individual industrial wastewater
discharge permits.
END OF PROCESS.
A sample point at the end of an industrial process that is
subject to federal categorical pretreatment standards. Categorical
limits are assessed at the end of process sampling location as designated
by individual industrial wastewater discharge permits.
ENVIRONMENTAL PROTECTION AGENCY OR EPA.
The U.S. Environmental Protection Agency or, where appropriate,
the Regional Water Management Division Director, the Regional Administrator,
or other duly authorized official of said agency.
GARBAGE.
Animal and vegetable wastes and residue from preparation,
cooking, and dispensing of food; and from the handling, processing,
storage and sale of food products and produce.
GRAB SAMPLE.
A sample that 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.
GREASE (ALSO INCLUDES FATS, OILS, AND GREASE).
Fatty acids, soaps, fats, waxes, petroleum products, oil,
and any other material which is extractable by hexane or freon solvent
from an acidified sample, and which is not volatilized during evaporation
of the solvent. Fats, oils, and grease (FOG): Organic polar compounds
derived from animal and/or plant sources that contain multiple carbon
chain triglyceride molecules. These substances are detectable and
measurable using analytical test procedures established in 40 CFR
Part 136, as may be amended from time to time. All are sometimes referred
to herein as “grease” or “greases.”
GREASE TRAP (OR GREASE INTERCEPTOR, OIL SEPARATOR).
A device designed to use differences in specific gravities
to separate and retain light density liquids, waterborne fats, oils,
and greases prior to the wastewater entering the sanitary sewer collection
system. These devices also serve to collect settleable solids, generated
by and from food preparation activities, prior to the water exiting
the interceptor and entering the sanitary sewer collection system.
Oil Separator: A watertight receptacle designed and constructed to
intercept and prevent the passage of petroleum-based oil, grease wastes
and solids into the sanitary sewer system to which the receptacle
is directly or indirectly connected.
HAULED WASTEWATER.
Wastewater introduced into the POTW that has been transported
by truck, rail, or any other transport, as distinguished from wastewater
that flows only from the original generating customer directly into
the POTW. Hauled wastewater typically includes septic tank waste.
HAZARDOUS WASTE.
The waste containing pollutants listed in 40 CFR 261.31,
261.32, or 261.33.
HOLD TIME.
The time starting from when a sample is taken until it is
analyzed. For composite samples the hold time starts when the last
aliquot is sampled.
INSTANTANEOUS 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 that, 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 a violation of the City’s
TPDES permit or of the prevention of sewage sludge use or disposal
in compliance.
LOCAL LIMIT.
Specific discharge limits developed and enforced by the City
upon industrial or commercial facilities to implement the general
and specific discharge prohibitions.
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.
MILLIGRAM PER LITER OR MG/L.
The same as parts per million and is a weight-to-volume ratio;
the milligram-per-liter value multiplied by the factor 8.34 shall
be equivalent to pounds per million gallons of water.
MONTHLY AVERAGE.
The sum of all “daily discharges” measured during
a calendar month divided by the number of “daily discharges”
measured during that month.
MONTHLY AVERAGE LIMIT.
The highest allowable average of “daily discharges”
over a calendar month, calculated as the sum of all “daily discharges”
measured during a calendar month divided by the number of “daily
discharges” measured during that month.
NELAP.
The National Environmental Laboratory Accreditation Program
developed and adopted by the National Environmental Laboratory Accreditation
Conference, which was established by state and federal officials in
1995 as an accreditation standards-setting organization for environmental
laboratories.
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 that 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 under this paragraph
has commenced if the owner or operator has:
(a)
Begun, or caused to begin, as part of a continuous onsite construction
program - any placement, assembly, or installation of facilities or
equipment; or 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 paragraph.
NONCONTACT COOLING WATER.
Water used for cooling that does not come into direct contact
with any raw material, intermediate product, waste product, or finished
product.
NORMAL WASTEWATER OR NORMAL DOMESTIC WASTEWATER.
Wastewater excluding industrial wastewater discharged by
a person into sanitary sewers and in which the average concentration
of Total Suspended Solids (TSS) is not more than 250 mg/l; 5-day Biochemical
Oxygen Demand (BOD) is not more than 250 mg/l; Chemical Oxygen Demand
(COD) is not more than 450 mg/L; Total Kjeldahl Nitrogen is not more
than 50 mg/l and Total Phosphorus is not more than 8 mg/l.
PASS THROUGH.
A discharge which exits the POTW 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 of a
violation of any requirement of City’s TPDES permit, including
an increase in the magnitude or duration of a violation.
PERSON.
Any individual, partnership, co-partnership, 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.
A measure of the acidity or alkalinity of a solution, expressed
in standard units.
POLLUTANT.
Dredged spoil, solid waste, incinerator residue, filter backwash,
sewage, garbage, sewage sludge, munitions, Medical Wastes, 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 COORDINATOR.
The person designated by the City to supervise industrial
discharge of non-domestic wastes to the POTW, and who is charged with
certain duties and responsibilities by this subchapter. The term also
means a Duly Authorized Representative of the City.
PRETREATMENT REQUIREMENTS.
Any substantive or procedural requirement related to pretreatment
imposed on a User, other than a Pretreatment Standard.
PUBLICLY OWNED TREATMENT WORKS OR POTW.
Any treatment works, as defined by section 212 of the Act
(33 U.S.C. section 1292), which is owned by the City. 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.
SANITARY SEWER.
A public sewer that conveys domestic wastewater or industrial
wastes or a combination of both, and into which stormwater, surface
water, groundwater, and other unpolluted wastes are not intentionally
passed.
STANDARD METHODS.
The examination and analytical procedures set forth in the
latest edition, at the time of analysis, of Standard Methods for the
Examination of Water and Wastewater as prepared, approved, and published
jointly by the American Public Health Association, the American Water
Works Association, and the Water Pollution Control Federation.
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.).
SHALL AND MAY.
The term “shall” describes mandatory actions,
and the term “may” describe permissive (i.e., discretionary)
actions.
SIGNIFICANT INDUSTRIAL USER (SIU)
(1)
An Industrial User subject to categorical Pretreatment Standards;
or
(2)
An Industrial 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; or
(c)
Is designated as such by the City on the basis that it has a
reasonable potential for adversely affecting the POTW’s operation
or for violating any Pretreatment Standard or Requirement.
SIGNIFICANT NONCOMPLIANCE.
A compliance status assigned to industrial users that meet
s any of the following:
(1)
Chronic violations of wastewater discharge limits, defined here
as those in which sixty six percent (66%) or more of all the measurements
taken for the same pollutant parameter taken during a six-month period
exceed (by any magnitude) a numeric Pretreatment Standard or Requirement,
including instantaneous limits.
(2)
Technical Review Criteria violations defined as those in which
thirty three percent (33%) or more of wastewater measurements taken
for each pollutant parameter during a six month period equals or exceeds
the product of the numeric Pretreatment Standard or Requirement, including
instantaneous limits multiplied by the applicable TRC (TRC= 1.4 for
BOD, TSS, fats, oils, and grease and 1.2 for all other pollutants
except pH).
(3)
Any other violation of a Pretreatment Standard or Requirement
(daily maximum, long-term average, instantaneous limit, or narrative
Standard) that the POTW determines has caused, alone or in combination
with other Discharges, Interference or Pass Through (including endangering
the health of POTW personnel or the general public).
(4)
Any discharge of a pollutant that has caused imminent endangerment
to human health, welfare, or to the environment or has resulted in
the POTW’s exercise of its emergency authority to halt or prevent
such a discharge.
(5)
Failure to meet, within 90 days after the schedule date, a compliance
schedule milestone contained in a local control mechanism or enforcement
order for starting construction, completing construction, or attaining
final compliance.
(6)
Failure to provide within 45 days after the due date, required
reports such as baseline monitoring reports, 90-day compliance reports,
periodic self-monitoring reports, and reports on compliance with compliance
schedules.
(7)
Failure to accurately report non-compliance; or any other violation
or group of violations, which may include a violation of Best Management
Practices, which the City determines will adversely affect the operation
or implementation of the local pretreatment program.
SLUG LOAD OR SLUG DISCHARGE.
Any discharge at a flow rate or concentration, which could cause a violation of the prohibited discharge standards in §
53.041 of this subchapter. A Slug Discharge is any Discharge of a non-routine, episodic nature, including but not limited to an accidental spill or a non-customary batch Discharge, which has a reasonable potential to cause Interference or Pass Through, or in any other way violate the POTW’s regulations, Local Limits or Permit conditions.
STORMWATER.
Any flow occurring during or following any form of natural
precipitation, and resulting from such precipitation, including snowmelt.
SURCHARGE OR INDUSTRIAL WASTEWATER SURCHARGE.
A charge in addition to the sewer charge that is applied
to those wastestreams whose pollutant concentrations are in excess
of normal domestic sewage, including but not limited to BOD, TSS,
Ammonia-Nitrogen and Total Phosphorus.
WASTEWATER LIQUID.
A combination of 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.
WATERCOURSE.
A natural or manmade channel in which a flow of water occurs,
either continuously or intermittently.