[Code of Federal Regulations]
[Title 40, Volume 18]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR122.2]

[Page 125-132]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 122--EPA ADMINISTERED PERMIT PROGRAMS: THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM--Table of Contents
 
         Subpart A--Definitions and General Program Requirements
 
Sec. 122.2  Definitions.

    The following definitions apply to parts 122, 123, and 124. Terms 
not defined in this section have the meaning given by CWA. When a 
defined term appears in a definition, the defined term is sometimes 
placed in quotation marks as an aid to readers.
    Administrator means the Administrator of the United States 
Environmental Protection Agency, or an authorized representative.
    Animal feeding operation is defined at Sec. 122.23.
    Applicable standards and limitations means all State, interstate, 
and federal standards and limitations to which a ``discharge,'' a 
``sewage sludge use or disposal practice,'' or a related activity is 
subject under the CWA, including ``effluent limitations,'' water quality 
standards, standards of performance, toxic effluent standards or 
prohibitions, ``best management practices,''

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pretreatment standards, and ``standards for sewage sludge use or 
disposal'' under sections 301, 302, 303, 304, 306, 307, 308, 403 and 405 
of CWA.
    Application means the EPA standard national forms for applying for a 
permit, including any additions, revisions or modifications to the 
forms; or forms approved by EPA for use in ``approved States,'' 
including any approved modifications or revisions.
    Approved program or approved State means a State or interstate 
program which has been approved or authorized by EPA under part 123.
    Aquaculture project is defined at Sec. 122.25.
    Average monthly discharge limitation means 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.
    Average weekly discharge limitation means the highest allowable 
average of ``daily discharges'' over a calendar week, calculated as the 
sum of all ``daily discharges'' measured during a calendar week divided 
by the number of ``daily discharges'' measured during that week.
    Best management practices (``BMPs'') means schedules of activities, 
prohibitions of practices, maintenance procedures, and other management 
practices to prevent or reduce the pollution of ``waters of the United 
States.'' BMPs also include treatment requirements, operating 
procedures, and practices to control plant site runoff, spillage or 
leaks, sludge or waste disposal, or drainage from raw material storage.
    BMPs means ``best management practices.''
    Class I sludge management facility means any POTW identified under 
40 CFR 403.8(a) as being required to have an approved pretreatment 
program (including such POTWs located in a State that has elected to 
assume local program responsibilities pursuant to 40 CFR 403.10(e)) and 
any other treatment works treating domestic sewage classified as a Class 
I sludge management facility by the Regional Administrator, or, in the 
case of approved State programs, the Regional Administrator in 
conjunction with the State Director, because of the potential for its 
sludge use or disposal practices to adversely affect public health and 
the environment.
    Bypass is defined at Sec. 122.41(m).
    Concentrated animal feeding operation is defined at Sec. 122.23.
    Concentrated aquatic animal feeding operation is defined at 
Sec. 122.24.
    Contiguous zone means the entire zone established by the United 
States under Article 24 of the Convention on the Territorial Sea and the 
Contiguous Zone.
    Continuous discharge means a ``discharge'' which occurs without 
interruption throughout the operating hours of the facility, except for 
infrequent shutdowns for maintenance, process changes, or other similar 
activities.
    CWA means the Clean Water Act (formerly referred to as the Federal 
Water Pollution Control Act or Federal Water Pollution Control Act 
Amendments of 1972) Public Law 92-500, as amended by Public Law 95-217, 
Public Law 95-576, Public Law 96-483 and Public Law 97-117, 33 U.S.C. 
1251 et seq.
    CWA and regulations means the Clean Water Act (CWA) and applicable 
regulations promulgated thereunder. In the case of an approved State 
program, it includes State program requirements.
    Daily discharge means the ``discharge of a pollutant'' measured 
during a calendar day or any 24-hour period that reasonably represents 
the calendar day for purposes of sampling. For pollutants with 
limitations expressed in units of mass, the ``daily discharge'' is 
calculated as the total mass of the pollutant discharged over the day. 
For pollutants with limitations expressed in other units of measurement, 
the ``daily discharge'' is calculated as the average measurement of the 
pollutant over the day.
    Direct discharge means the ``discharge of a pollutant.''
    Director means the Regional Administrator or the State Director, as 
the context requires, or an authorized representative. When there is no 
``approved State program,'' and there is an EPA administered program, 
``Director'' means the Regional Administrator.

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When there is an approved State program, ``Director'' normally means the 
State Director. In some circumstances, however, EPA retains the 
authority to take certain actions even when there is an approved State 
program. (For example, when EPA has issued an NPDES permit prior to the 
approval of a State program, EPA may retain jurisdiction over that 
permit after program approval, see Sec. 123.1.) In such cases, the term 
``Director'' means the Regional Administrator and not the State 
Director.
    Discharge when used without qualification means the ``discharge of a 
pollutant.''
    Discharge of a pollutant means:
    (a) Any addition of any ``pollutant'' or combination of pollutants 
to ``waters of the United States'' from any ``point source,'' or
    (b) Any addition of any pollutant or combination of pollutants to 
the waters of the ``contiguous zone'' or the ocean from any point source 
other than a vessel or other floating craft which is being used as a 
means of transportation.

This definition includes additions of pollutants into waters of the 
United States from: surface runoff which is collected or channelled by 
man; discharges through pipes, sewers, or other conveyances owned by a 
State, municipality, or other person which do not lead to a treatment 
works; and discharges through pipes, sewers, or other conveyances, 
leading into privately owned treatment works. This term does not include 
an addition of pollutants by any ``indirect discharger.''
    Discharge Monitoring Report (``DMR'') means the EPA uniform national 
form, including any subsequent additions, revisions, or modifications 
for the reporting of self-monitoring results by permittees. DMRs must be 
used by ``approved States'' as well as by EPA. EPA will supply DMRs to 
any approved State upon request. The EPA national forms may be modified 
to substitute the State Agency name, address, logo, and other similar 
information, as appropriate, in place of EPA's.
    DMR means ``Discharge Monitoring Report.''
    Draft permit means a document prepared under Sec. 124.6 indicating 
the Director's tentative decision to issue or deny, modify, revoke and 
reissue, terminate, or reissue a ``permit.'' A notice of intent to 
terminate a permit, and a notice of intent to deny a permit, as 
discussed in Sec. 124.5, are types of ``draft permits.'' A denial of a 
request for modification, revocation and reissuance, or termination, as 
discussed in Sec. 124.5, is not a ``draft permit.'' A ``proposed 
permit'' is not a ``draft permit.''
    Effluent limitation means any restriction imposed by the Director on 
quantities, discharge rates, and concentrations of ``pollutants'' which 
are ``discharged'' from ``point sources'' into ``waters of the United 
States,'' the waters of the ``contiguous zone,'' or the ocean.
    Effluent limitations guidelines means a regulation published by the 
Administrator under section 304(b) of CWA to adopt or revise ``effluent 
limitations.''
    Environmental Protection Agency (``EPA'') means the United States 
Environmental Protection Agency.
    EPA means the United States ``Environmental Protection Agency.''
    Facility or activity means any NPDES ``point source'' or any other 
facility or activity (including land or appurtenances thereto) that is 
subject to regulation under the NPDES program.
    Federal Indian reservation means all land within the limits of any 
Indian reservation under the jurisdiction of the United States 
Government, notwithstanding the issuance of any patent, and including 
rights-of-way running through the reservation.
    General permit means an NPDES ``permit'' issued under Sec. 122.28 
authorizing a category of discharges under the CWA within a geographical 
area.
    Hazardous substance means any substance designated under 40 CFR part 
116 pursuant to section 311 of CWA.
    Indian country means:
    (1) All land within the limits of any Indian reservation under the 
jurisdiction of the United States Government, notwithstanding the 
issuance of any patent, and, including rights-of-way running through the 
reservation;
    (2) All dependent Indian communities with the borders of the United 
States whether within the originally or subsequently acquired territory 
thereof, and

[[Page 128]]

whether within or without the limits of a state; and
    (3) All Indian allotments, the Indian titles to which have not been 
extinguished, including rights-of-way running through the same.
    Indian Tribe means any Indian Tribe, band, group, or community 
recognized by the Secretary of the Interior and exercising governmental 
authority over a Federal Indian reservation.
    Indirect discharger means a nondomestic discharger introducing 
``pollutants'' to a ``publicly owned treatment works.''
    Individual control strategy is defined at 40 CFR 123.46(c).
    Interstate agency means an agency of two or more States established 
by or under an agreement or compact approved by the Congress, or any 
other agency of two or more States having substantial powers or duties 
pertaining to the control of pollution as determined and approved by the 
Administrator under the CWA and regulations.
    Major facility means any NPDES ``facility or activity'' classified 
as such by the Regional Administrator, or, in the case of ``approved 
State programs,'' the Regional Administrator in conjunction with the 
State Director.
    Maximum daily discharge limitation means the highest allowable 
``daily discharge.''
    Municipality means a city, town, borough, county, parish, district, 
association, or other public body created by or under State law and 
having jurisdiction over disposal of sewage, industrial wastes, or other 
wastes, or an Indian tribe or an authorized Indian tribal organization, 
or a designated and approved management agency under section 208 of CWA.
    Municipal separate storm sewer system is defined at Sec. 122.26 
(b)(4) and (b)(7).
    National Pollutant Discharge Elimination System (NPDES) means the 
national program for issuing, modifying, revoking and reissuing, 
terminating, monitoring and enforcing permits, and imposing and 
enforcing pretreatment requirements, under sections 307, 402, 318, and 
405 of CWA. The term includes an ``approved program.''
    New discharger means any building, structure, facility, or 
installation:
    (a) From which there is or may be a ``discharge of pollutants;''
    (b) That did not commence the ``discharge of pollutants'' at a 
particular ``site'' prior to August 13, 1979;
    (c) Which is not a ``new source;'' and
    (d) Which has never received a finally effective NDPES permit for 
discharges at that ``site.''

This definition includes an ``indirect discharger'' which commences 
discharging into ``waters of the United States'' after August 13, 1979. 
It also includes any existing mobile point source (other than an 
offshore or coastal oil and gas exploratory drilling rig or a coastal 
oil and gas developmental drilling rig) such as a seafood processing 
rig, seafood processing vessel, or aggregate plant, that begins 
discharging at a ``site'' for which it does not have a permit; and any 
offshore or coastal mobile oil and gas exploratory drilling rig or 
coastal mobile oil and gas developmental drilling rig that commences the 
discharge of pollutants after August 13, 1979, at a ``site'' under EPA's 
permitting jurisdiction for which it is not covered by an individual or 
general permit and which is located in an area determined by the 
Regional Administrator in the issuance of a final permit to be an area 
or biological concern. In determining whether an area is an area of 
biological concern, the Regional Administrator shall consider the 
factors specified in 40 CFR 125.122(a) (1) through (10).

An offshore or coastal mobile exploratory drilling rig or coastal mobile 
developmental drilling rig will be considered a ``new discharger'' only 
for the duration of its discharge in an area of biological concern.
    New source means any building, structure, facility, or installation 
from which there is or may be a ``discharge of pollutants,'' the 
construction of which commenced:
    (a) After promulgation of standards of performance under section 306 
of CWA which are applicable to such source, or
    (b) After proposal of standards of performance in accordance with 
section 306 of CWA which are applicable to such source, but only if the 
standards are promulgated in accordance with

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section 306 within 120 days of their proposal.
    NPDES means ``National Pollutant Discharge Elimination System.''
    Owner or operator means the owner or operator of any ``facility or 
activity'' subject to regulation under the NPDES program.
    Permit means an authorization, license, or equivalent control 
document issued by EPA or an ``approved State'' to implement the 
requirements of this part and parts 123 and 124. ``Permit'' includes an 
NPDES ``general permit'' (Sec. 122.28). Permit does not include any 
permit which has not yet been the subject of final agency action, such 
as a ``draft permit'' or a ``proposed permit.''
    Person means an individual, association, partnership, corporation, 
municipality, State or Federal agency, or an agent or employee thereof.
    Point source means any discernible, confined, and discrete 
conveyance, including but not limited to, any pipe, ditch, channel, 
tunnel, conduit, well, discrete fissure, container, rolling stock, 
concentrated animal feeding operation, landfill leachate collection 
system, vessel or other floating craft from which pollutants are or may 
be discharged. This term does not include return flows from irrigated 
agriculture or agricultural storm water runoff. (See Sec. 122.3).
    Pollutant means dredged spoil, solid waste, incinerator residue, 
filter backwash, sewage, garbage, sewage sludge, munitions, chemical 
wastes, biological materials, radioactive materials (except those 
regulated under the Atomic Energy Act of 1954, as amended (42 U.S.C. 
2011 et seq.)), heat, wrecked or discarded equipment, rock, sand, cellar 
dirt and industrial, municipal, and agricultural waste discharged into 
water. It does not mean:
    (a) Sewage from vessels; or
    (b) Water, gas, or other material which is injected into a well to 
facilitate production of oil or gas, or water derived in association 
with oil and gas production and disposed of in a well, if the well used 
either to facilitate production or for disposal purposes is approved by 
authority of the State in which the well is located, and if the State 
determines that the injection or disposal will not result in the 
degradation of ground or surface water resources.
    Note: Radioactive materials covered by the Atomic Energy Act are 
those encompassed in its definition of source, byproduct, or special 
nuclear materials. Examples of materials not covered include radium and 
accelerator-produced isotopes. See Train v. Colorado Public Interest 
Research Group, Inc., 426 U.S. 1 (1976).
    POTW is defined at Sec. 403.3 of this chapter.
    Primary industry category means any industry category listed in the 
NRDC settlement agreement (Natural Resources Defense Council et al. v. 
Train, 8 E.R.C. 2120 (D.D.C. 1976), modified 12 E.R.C. 1833 (D.D.C. 
1979)); also listed in appendix A of part 122.
    Privately owned treatment works means any device or system which is 
(a) used to treat wastes from any facility whose operator is not the 
operator of the treatment works and (b) not a ``POTW.''
    Process wastewater means any water which, during manufacturing or 
processing, comes into direct contact with or results from the 
production or use of any raw material, intermediate product, finished 
product, byproduct, or waste product.
    Proposed permit means a State NPDES ``permit'' prepared after the 
close of the public comment period (and, when applicable, any public 
hearing and administrative appeals) which is sent to EPA for review 
before final issuance by the State. A ``proposed permit'' is not a 
``draft permit.''
    Publicly owned treatment works is defined at 40 CFR 403.3.
    Recommencing discharger means a source which recommences discharge 
after terminating operations.
    Regional Administrator means the Regional Administrator of the 
appropriate Regional Office of the Environmental Protection Agency or 
the authorized representative of the Regional Administrator.
    Schedule of compliance means a schedule of remedial measures 
included in a ``permit'', including an enforceable sequence of interim 
requirements (for example, actions, operations, or milestone events) 
leading to compliance with the CWA and regulations.

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    Secondary industry category means any industry category which is not 
a ``primary industry category.''
    Secretary means the Secretary of the Army, acting through the Chief 
of Engineers.
    Septage means the liquid and solid material pumped from a septic 
tank, cesspool, or similar domestic sewage treatment system, or a 
holding tank when the system is cleaned or maintained.
    Sewage from vessels means human body wastes and the wastes from 
toilets and other receptacles intended to receive or retain body wastes 
that are discharged from vessels and regulated under section 312 of CWA, 
except that with respect to commercial vessels on the Great Lakes this 
term includes graywater. For the purposes of this definition, 
``graywater'' means galley, bath, and shower water.
    Sewage Sludge means any solid, semi-solid, or liquid residue removed 
during the treatment of municipal waste water or domestic sewage. Sewage 
sludge includes, but is not limited to, solids removed during primary, 
secondary, or advanced waste water treatment, scum, septage, portable 
toilet pumpings, type III marine sanitation device pumpings (33 CFR part 
159), and sewage sludge products. Sewage sludge does not include grit or 
screenings, or ash generated during the incineration of sewage sludge.
    Sewage sludge use or disposal practice means the collection, 
storage, treatment, transportation, processing, monitoring, use, or 
disposal of sewage sludge.
    Silvicultural point source is defined at Sec. 122.27.
    Site means the land or water area where any ``facility or activity'' 
is physically located or conducted, including adjacent land used in 
connection with the facility or activity.
    Sludge-only facility means any ``treatment works treating domestic 
sewage'' whose methods of sewage sludge use or disposal are subject to 
regulations promulgated pursuant to section 405(d) of the CWA and is 
required to obtain a permit under Sec. 122.1(b)(2).
    Standards for sewage sludge use or disposal means the regulations 
promulgated pursuant to section 405(d) of the CWA which govern minimum 
requirements for sludge quality, management practices, and monitoring 
and reporting applicable to sewage sludge or the use or disposal of 
sewage sludge by any person.
    State means any of the 50 States, the District of Columbia, Guam, 
the Commonwealth of Puerto Rico, the Virgin Islands, American Samoa, the 
Commonwealth of the Northern Mariana Islands, the Trust Territory of the 
Pacific Islands, or an Indian Tribe as defined in these regulations 
which meets the requirements of Sec. 123.31 of this chapter.
    State Director means the chief administrative officer of any State 
or interstate agency operating an ``approved program,'' or the delegated 
representative of the State Director. If responsibility is divided among 
two or more State or interstate agencies, ``State Director'' means the 
chief administrative officer of the State or interstate agency 
authorized to perform the particular procedure or function to which 
reference is made.
    State/EPA Agreement means an agreement between the Regional 
Administrator and the State which coordinates EPA and State activities, 
responsibilities and programs including those under the CWA programs.
    Storm water is defined at Sec. 122.26(b)(13).
    Storm water discharge associated with industrial activity is defined 
at Sec. 122.26(b)(14).
    Total dissolved solids means the total dissolved (filterable) solids 
as determined by use of the method specified in 40 CFR part 136.
    Toxic pollutant means any pollutant listed as toxic under section 
307(a)(1) or, in the case of ``sludge use or disposal practices,'' any 
pollutant identified in regulations implementing section 405(d) of the 
CWA.
    Treatment works treating domestic sewage means a POTW or any other 
sewage sludge or waste water treatment devices or systems, regardless of 
ownership (including federal facilities), used in the storage, 
treatment, recycling, and reclamation of municipal or domestic sewage, 
including land dedicated for the disposal of sewage sludge.

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This definition does not include septic tanks or similar devices. For 
purposes of this definition, ``domestic sewage'' includes waste and 
waste water from humans or household operations that are discharged to 
or otherwise enter a treatment works. In States where there is no 
approved State sludge management program under section 405(f) of the 
CWA, the Regional Administrator may designate any person subject to the 
standards for sewage sludge use and disposal in 40 CFR part 503 as a 
``treatment works treating domestic sewage,'' where he or she finds that 
there is a potential for adverse effects on public health and the 
environment from poor sludge quality or poor sludge handling, use or 
disposal practices, or where he or she finds that such designation is 
necessary to ensure that such person is in compliance with 40 CFR part 
503.
    TWTDS means ``treatment works treating domestic sewage.''
    Upset is defined at Sec. 122.41(n).
    Variance means any mechanism or provision under section 301 or 316 
of CWA or under 40 CFR part 125, or in the applicable ``effluent 
limitations guidelines'' which allows modification to or waiver of the 
generally applicable effluent limitation requirements or time deadlines 
of CWA. This includes provisions which allow the establishment of 
alternative limitations based on fundamentally different factors or on 
sections 301(c), 301(g), 301(h), 301(i), or 316(a) of CWA.
    Waters of the United States or waters of the U.S. means:
    (a) All waters which are currently used, were used in the past, or 
may be susceptible to use in interstate or foreign commerce, including 
all waters which are subject to the ebb and flow of the tide;
    (b) All interstate waters, including interstate ``wetlands;''
    (c) All other waters such as intrastate lakes, rivers, streams 
(including intermittent streams), mudflats, sandflats, ``wetlands,'' 
sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds 
the use, degradation, or destruction of which would affect or could 
affect interstate or foreign commerce including any such waters:
    (1) Which are or could be used by interstate or foreign travelers 
for recreational or other purposes;
    (2) From which fish or shellfish are or could be taken and sold in 
interstate or foreign commerce; or
    (3) Which are used or could be used for industrial purposes by 
industries in interstate commerce;
    (d) All impoundments of waters otherwise defined as waters of the 
United States under this definition;
    (e) Tributaries of waters identified in paragraphs (a) through (d) 
of this definition;
    (f) The territorial sea; and
    (g) ``Wetlands'' adjacent to waters (other than waters that are 
themselves wetlands) identified in paragraphs (a) through (f) of this 
definition.

Waste treatment systems, including treatment ponds or lagoons designed 
to meet the requirements of CWA (other than cooling ponds as defined in 
40 CFR 423.11(m) which also meet the criteria of this definition) are 
not waters of the United States. This exclusion applies only to manmade 
bodies of water which neither were originally created in waters of the 
United States (such as disposal area in wetlands) nor resulted from the 
impoundment of waters of the United States. [See Note 1 of this 
section.] Waters of the United States do not include prior converted 
cropland. Notwithstanding the determination of an area's status as prior 
converted cropland by any other federal agency, for the purposes of the 
Clean Water Act, the final authority regarding Clean Water Act 
jurisdiction remains with EPA.
    Wetlands means those areas that are inundated or saturated by 
surface or groundwater at a frequency and duration sufficient to 
support, and that under normal circumstances do support, a prevalence of 
vegetation typically adapted for life in saturated soil conditions. 
Wetlands generally include swamps, marshes, bogs, and similar areas.
    Whole effluent toxicity means the aggregate toxic effect of an 
effluent measured directly by a toxicity test.
    Note: At 45 FR 48620, July 21, 1980, the Environmental Protection 
Agency suspended until further notice in Sec. 122.2, the last sentence, 
beginning ``This exclusion applies

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. . .'' in the definition of ``Waters of the United States.'' This 
revision continues that suspension.\1\
---------------------------------------------------------------------------

    \1\ Editorial Note: The words ``This revision'' refer to the 
document published at 48 FR 14153, Apr. 1, 1983.

(Clean Water Act (33 U.S.C. 1251 et seq.), Safe Drinking Water Act (42 
U.S.C. 300f et seq.), Clean Air Act (42 U.S.C. 7401 et seq.), Resource 
---------------------------------------------------------------------------
Conservation and Recovery Act (42 U.S.C. 6901 et seq.))

[48 FR 14153, Apr. 1, 1983, as amended at 48 FR 39619, Sept. 1, 1983; 50 
FR 6940, 6941, Feb. 19, 1985; 54 FR 254, Jan. 4, 1989; 54 FR 18781, May 
2, 1989; 54 FR 23895, June 2, 1989; 58 FR 45039, Aug. 25, 1993; 58 FR 
67980, Dec. 22, 1993; 64 FR 42462, Aug. 4, 1999; 65 FR 30905, May 15, 
2000]