5101
 DEF
United States
Environmental Protection
Agency
Office of Water
Regulations and Standards
Washington, DC 20460
                                        October 1980
                                     810R80105
             Water
i&EPA     Definitions
             Water Quality Standards
             Criteria Summaries
             A Compilation
             of State/Federal Criteria

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               DEFINITIONS
         Water Quality Standards
           Criteria Summaries
 A Compilation of State/Federal Criteria
              October 1980
  U. S. Environmental Protection Agency
Office of Water Regulations and Standards
        Washington,  D. C.   20460
 Chi«*o> Illinois  £060*

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               NATIONAL SUMMARY




                        OF




         STATE WATER QUALITY STANDARDS








                   DEFINITIONS








                  OCTOBER, 1980
                  PREPARED FOR




UNITED STATES ENVIRONMENTAL PROTECTION AGENCY




         CRITERIA AND STANDARDS DIVISION




                401 M STREET, S. W.




              WASHINGTON, D. C. 20460
                   PREPARED BY




       NALESNIK ASSOCIATES INCORPORATED




            505 ELEVENTH STREET, S. E.




              WASHINGTON, D. C. 20003
                                Contract Number   68-01-6058



                                Project Number    WA-80-A055

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INTRODUCTION
This digest is compiled to provide general information to the public as well as to
Federal, State,  and  local  officials.   It contains  excerpts from  the individual
Federal-State water  quality standards  establishing pollutant specific  criteria for
interstate surface waters.  The water quality standards program is implemented by
the  U.  S. Environmental  Protection  Agency  where  responsibility  for  providing
water quality recommendations,  approving  State-adopted standards for interstate
waters, evaluating adherence  to the  standards, and overseeing enforcement of
standards compliance, has been mandated by Congress.

Standards, a nationwide strategy for surface water quality management, contain
three major elements:  the use (recreation,  drinking  water, fish and wildlife
propagation,  industrial,  or agricultural)  to be made of  the navigable water; criteria
to protect these uses; and  an antidegradation statement  to protect existing high
quality waters, from degradation  by the addition of pollutants.

Water  quality  criteria (numerical  or  narrative  specifications)  for  physical,
chemical, temperature,  and biological constituents are stated in the July 1976 U. S.
Environmental Protection Agency publication Quality Criteria for Water (QCW),
available from the Government Printing Office, Washington, D. C. The 1976 QCW,
commonly referred  to  as  the  "Red  Book," is  the most current compilation of
scientific information used by  the  Agency  as a  basis for assessing water quality.
This publication is subject  to periodic updating  and revisions  in light of new
scientific and technical  information.

This digest is a  compilation of key terms and definitions which are employed by a
given state in implementing its  Water Quality  Standards program.   The under-
standing of these terms and definitions  has become increasingly important as more
public and local  government interests focus on the attainability of  goals outlined by
Clean Water  Act.  Increased importance is also given to these terms as  more inter-
state program coordination is accomplished.

Since water  quality standards  experience  revisions and upgrading from time to
time, following  procedures set  forth in the Clean Water  Act, individual entries in
this digest may  be superseded.   As these revisions are accomplished and allowing
for the States to revise  their standards  accordingly, this digest will be updated and
reissued.  Because this  publication  is not intended for use other than as a general
information resource, to obtain the latest information  and for special purposes and
applications,  the reader needs  to  refer to the current  approved water quality
standards.  These can be obtained from  the State water pollution  control agencies
or the EPA or Regional Offices.

Individual State-adopted definitions follow:

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                         REFERENCES

A
     California Water Quality Standards by River Basins, c.a. 1975

     For more detailed  information on selected basins, sub-basins
     and stretches  of streams and coastal areas refer to California
     State Water Quality Standards.

     Delaware Water Quality Standards, March 25, 1979
C
     Idaho Water Quality Standards, c.a. September, 1979

     Missouri Water Quality Standards, c.a. February, 1978
p
     American Samoa Water Quality Standards,
     Revised July, 1973

F    Territory of Guam Water Quality Standards, Sept. 1975
/~i
     Trust Territory of the Pacific Islands  Water Quality
     Standards, October 21, 1973

H    Virgin Islands Water Quality Standards, Aug. 1973
ENVIRONMENT REPORTER, The Bureau of National Affairs, Inc.
Washington, D. C. 20037

1    Pages 701:0501-0509, February 16, 1979

2    Pages 706:1004-1008, July 20, 1979

3    Pages 711:0542-0544, August 5, 1977

4    Pages 716:0603, March 26, 1976

5    Pages 726:1005, 1011-1013, March 7, 1980

     Basic Water Quality Standards adopted May 22, 1979,
     have not yet been submitted to EPA for formal approval.

6    Pages 731:1002-1009, September 8, 1978

7    Pages 746:1008-1014, October 19, 1979

8    Pages 751:0504-0505, January 25, 1980

9    Pages 765:0512-0515, January 30, 1976

10   Page 761:0503-0504, 1973

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11   Page 766:0504-0509, October 5, 1979

12   Pages 771:0502-0504, September 29, 1978

13   Pages 776:0504-0506, April 10, 1979

14   Pages 781:0501-0502, May 18, 1979

15   Pages 786:0501-0502, August 29, 1975

16   Page 791:0583, May 26, 1978

17   Pages 796:0103-0108, February 16, 1979

18   Pages 801:1001-1002, Sept. 29, 1978

1 Q
     Page 806:1003, March 30, 1979

90
     Page 811:1043, 1974

21   Pages 816:0602-0607, 0642-0648, 1974

99
     Pages 821:0502-0505, June 30, 1978
00
     Pages 831:0501-0510, February 21, 1975

94
     Page 836:0502, June 30, 1978

OR
     Pages 841:0507-0537, December 7, 1979

26   Pages 846:0501-0508, November 17, 1978

97
     Pages 851:1001-1023, December 15, 1978
00
     Pages 856:1001-1002, July 18, 1978
oq
     Pages 861:1002-1007, August 11, 1979
on
     Pages 866:1004-1009, December 28, 1979

31   Pages 871:0501-0506, November 25, 1977
•30
     Pages 876:1001-1043, May 26, 1978
Q-5
     Pages 881:1001-1007, September 21, 1979

Q4
     Pages 886:0513-0524, August 29, 1975
QCL
     Pages 891:1001-1129, November 16, 1979

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oc
     Pages 901:0501-0505, November 3, 1978

"\1
     Pages 906:0501-0506, October 13, 1978

00
     Pages 911:0501-0507, June 22, 1979

Q0
     Pages 916:0541-0544, April 14, 1978

4f)
     Pages 921:1001-1003, August 13,  1976


41   Pages 926:0541-0563, January 26, 1979

49
     Pages 931:0501-0508, May 26, 1978

4Q
     Pages 936:1001-1003, June 27, 1975

44
     Pages 941:1001-1005, May 26, 1978

4^
     Pages 946:0501-0520, July 14, 1978

46
     Pages 951:1002-1003, April 28, 1978


 7   Pages 956:1001-1007, January 11, 1980

48
     Page 741:1002, November 23, 1979

49
     Pages 896:0301-0310, March 31, 1978

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                                    DEFINITIONS
State
Alabama
Alaska"
a. State Waters means all waters of any river, stream, watercourse,
pond, lake,  coastal,  ground or surface water, wholly  or  partially
within the state.

b. Sewage  means  water-carried  human  wastes  from  residences,
building, industrial establishments  or other places including, but not
limited  to, any vessels, or other conveyances traveling  or using the
waters of this state, together with such ground, surface,  storm or
other waters as may be present.

c. Industrial Wastes means liquid or other wastes resulting from any
process  of industry,  manufacture, trade or  business  or from the
development of natural resources.

d. Other Wastes means  all other substances, whether liquid, gaseous
or solid, from  all other sources including,  but not limited to, any
vessels,  or other conveyances  traveling or  using the waters of this
state, except industrial  wastes or sewage, which may cause pollution
of any waters of the state.

e. Commission  means  the  Water  Improvement  Commission:  and
"member" means a member of said Commission.

(1)  "acute"  means  severe  but of short duration with  respect to
constituent toxicity of disease:

(2) "anadromous fish" means those  fish which spend a portion of their
lives  in both  fresh and salt  waters, including the five species of
Pacific salmon,  Dolly Varden, rainbow trout (steelhead), sea-run cut
throat trout, arctic char, sheefish and whitefish;

(3) "aquaculture" means  the regulation and cultivation of water plants
or animals for human  use or consumption;

(4) "boundary"  means any line or  landmark which  serves to clarify,
outline,  or mark a limit, border, or interface;

(5) central office" means the central office of the Alaska Department
of Environmental Conservation, Pouch O, Juneau, Alaska 99811;
                                 i
(6) '/Clean Water Act"  means  the  Federal  Water  Pollution Control
Act  (commonly refered to as  the Clean Water Act (P.L.92-500, as
amended by  P.L. 95-217) 33 U.S.C. Sec. 1251 et seq.);

(7) "chronic" means  lasting a  long  time or  recurring  often  with
respect to constituent toxicity or disease.

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Alaska (con't)      (8) "color" means that  condition of water which results in the visual
                   sensations of hue  and  intensity;  apparent color  is the condition of
                   water due to both substances in solution and due to suspended matter;
                   color is measured in water after the turbidity is removed;

                   (9) "commissioner" means the commissioner of environmental conser-
                   vation;

                   (10) "compensation point  for  photosynthetic  activity"  means  that
                   point at which incident light penetration is sufficient for plankton to
                   photosynthetically produce enough  oxygen to balance  their respi-
                   ration requirements;

                   (11) "contact recreation" means activities in which there is direct and
                   intimate contact with water; examples of primary contact  recreation
                   include wading and dabbling, swimming, diving, water skiing, surfing
                   and any intimate contact with  water directly associated with shore-
                   line activities.

                   (12)  "criterion" means a  designated concentration  or  limit  of  a
                   constituent  that, when not exceeded, will protect an organism, an
                   organism community,  or a prescribed  water use or  quality  with a
                   reasonable  degree of safety; a criterion, in some cases,  may  be a
                   narrative statement instead of  a numerical constituent concentration
                   or limit;

                   (13) "department" means  the Alaska Department of Environmental
                   Conservation;

                   (14) "dissolved oxygen" means  the solubility of  oxygen  in water as
                   determined either by the Winkler (iodometric) method and its modifi-
                   cations or by the Membrane Electrode Method;

                   (15) "effluent" means  that segment of  a wastewater stream imme-
                   diately following the final step in any treatment process  but before
                   the wastewater stream is discharged to the receiving environment;

                   (16) "fecal coliform bacteria" means those bacteria that can ferment
                   lactose at 44.5 degree  plus  or minus 0.2 degree C to produce gas in a
                   multiple  tube  procedure;  fecal coliform bacteria  also  means  all
                   organisms which produce blue colonies within 24  plus or minus hours
                   of incubation at 44.5 degree plus or minum 0.2 degree C in an M-FC
                   broth medium.

                   (17) "fish" means any of the group of cold-blooded vertebrate animals
                   living in water, and having permanent gills for  breathing and fins for
                   locomotion;

                   (18)  "Grain Size  Accumulation Graph" means   the graph  of the
                   sediment sieving results where the logarithm of the size (millimeters)
                   is plotted on the horizontal axis and percent accumulation by weight
                   is plotted in the linear  scale on a vertical axis;
                                        - 2-

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Alaska (con't)      (19) "groundwater" means water is in the zone of saturation, which is
                   the zone below the water table,  in which all interstices are filled
                   with water;

                   (20) "industrial use"  means any water supply used in association with
                   a manufacturing or production enterprise (other than food processing)
                   including mining, placer mining, energy production or development.

                   (21) "lake"  means an inland body of water, fresh or salt, of. substantial
                   size, occupying a basin or hollow in the earth's surface, which  may or
                   may not have a current or single direction of flow;
                   (22) "LCcn" means the median lethal concentration of a toxicant; it is
                   the concentration which is lethal to fifty percent  of the organisms
                   tested under conditions  outlined by the  department  in  a specified
                   time; "LCrn means the same as tolerance limit TLM, or TL^;

                   (23)  "mean" means the average of values obtained over  a specified
                   period of time;  for fecal coliforn  determination the  mean  shall  be
                   computed as the logarithmic mean;

                   (24) "micrograms per liter" (ug/1) means the concentration at which 1
                   millionth of a gram (10-  g) is  contained in a volume of 1  liter; there
                   are 453.59 grams in a pound;

                   (25) "milligram,, per liter" (mg/1) means the concentration at which 1
                   milligram (10- g) is contained in a  volume of  1 liter; it is  approxi-
                   mately  equivalent to the unit parts per  million (ppm),  formerly  of
                   common use;

                   (26) "mixing zone" means the area continguous to a  discharge or to an
                   activity in the water, where a receiving water  may not meet all the
                   water quality standards; wastes and water are given an area to mix
                   such that the water quality standards are met  at  the boundaries of
                   the mixing zone;

                   (27)  "most probable number" (MPN) means the statistically deter-
                   mined number which represents the number of individuals most likely
                   present in a given sample or a  liquor, based on test data.

                   (28)  "natural condition"  means those conditions  physical, chemical,
                   biological,  or radiological which exist(ed) in a water before any man
                   induced discharge into the water or any activity of man  resulting in
                   addition of material into  the water;

                   (29) "oil and grease" means oil and grease  as defined by the procedure
                   used; see sec. 20(c) of this chapter for analytical procedures;

                   (30) "pH"  means the negative  logarithm of the hydrogen-ion activity
                   concentration when expressed as moles per liter; PH = ~log10  (H+);
                                        - 3-

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Alaska (con't)      (31) "pollution" means  the  contamination or altering of waters, land
                   or subsurface land of the state in a manner which creates a nuisance
                   or makes waters, land or subsurface land unclean,  or noxious, or
                   impure, or unfit so that they  are  actually or  potentially  harmful or
                   detrimental  or  injurious  to  public health,  safety or  welfare, to
                   domestic, commercial, industrial, or recreational use, or to livestock,
                   wild animals, birds, fish or other  aquatic life;

                   (32) "residues"  means  floating solids,  debris,  sludge deposits,  foam,
                   scum or any other materials or substances remaining in a  water body
                   as a result of a direct or proximate activity of  man;

                   (33)  "secondary recreation"  means recreation activities  in  which
                   water use is incidental, accidental or  sensory, and includes fishing,
                   boating, camping, hunting, hiking and vacationing;

                   (34) "sediment" means  solid material or organic or miniral origin that
                   is transported  by, suspended in,  or deposited from water; it includes
                   chemical  and biochemical  precipitates and organic material such as
                   humus;

                   (35) "sheen" means an irridescent appearance on the surface of the
                   water;

                   (36)  "sodium absorption ratio"  (SAR)  means  the estimate  of  the
                   degree to which sodium will be  absorbed in soil from a given water,
                   as proposed by the U. S.  Salinity Laboratory, U. S.  Department of
                   Agriculture, Handbook 60, expressed as  the quotient  of  the sodium
                   ion concentration  and the  square root  of one-half the sum  of the
                   calcium and magnesium ion concentrations.

                   (37) "spawning" means the process of producing,  emitting or  depo-
                   siting eggs, sperm, seed, germ, larvae, young  or juveniles, especially
                   in large numbers by aquatic life, including fish, shellfish, amphibians,
                   mollusks and crustaceans;

                   (38)  "thermocline"  means  the layer of water  between  a warmer,
                   surface zone and a colder,  deep-water  zone in a thermally  stratified
                   body of water,  in which the water temperature decreases rapidly with
                   depth;

                   (39) "total aromatic hydrocarbon" (TAH) means those water accom-
                   modated compounds having at least one aromatic ring and includes
                   the following   functional  groups;  oxyaromatics, heterocyclic corn-
                   pounds,  benzene family  mononuclear aromatics, and polynuclear
                   aromatic hydrocarbons;
   •

                   (40)  "total  hydrocarbons"  (TH) means  those  compounds  measured
                   using Gruenfields IR partition infrared methods; as specified in the
                   14th Edition of Standards Methods for the  Examination  of  Waste-
                   water  (method 502 B); samples collected in  marine  waters  for Th
                                         -4-

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Alaska  (con't)      analysis shall be taken within one meter of the surface and below any
                   observable surface slip sheen or fresh water lens; sample collected in
                   fresh waters shall be taken  immediately below the surface  of the
                   water and below any observable surface clip sheen;

                   (41) "toxic substances"  means those  materials, or  combinations  of
                   materials, including disease-causing agents which after discharge and
                   upon   exposure,   ingestion,   inhalation   or   assimilation  into  any
                   organism,  either  directly from  the  environment  or  indirectly  by
                   ingestion  through food  chains,  will, on the  basis of  information
                   available, cause death, disease, behavioral abnormalities, malignancy,
                   genetic mutation, physiological abnormalities (including malfunctions
                   in reproduction) or physical deformations, in affected organisms  or
                   their offspring; the term includes  the following substances, and any
                   other substance identified as a toxic pollutant  under sec. 307 (a) of
                   the Clean Water Act of 1977 (33 U.S.C. sec. 466 et seq.);

                   Aldrin/Dieldrin; Arsenic; Benzidine; Carbon tetrachloride; Cadmium;
                   Dichlorobenzidine; Chlorinated  ethanes;  Chloroform;  Chromium;
                   Demeton; Dichloroethylenes; Dinitrotoluene; Fluoranthene; Diphenyl-
                   hydrazine;  Endrin; Hexachlorocyclopentadiene; Ethylbenzene;  Lin-
                   dane; Mercury, Nickel, Nitrobenzene; Napthalene; Silver; Vinyl Chlo-
                   ride;  Acenaphthene;  Antimony,  Chlorinated benzenes;  Chloroalkyl
                   ethers; DDT;  Dichloropropane and Dichloropropene; Halomethanes;
                   Malathion; Tetrachloroethylene;  Trichoroethylene;  Polynuclear  aro-
                   matic  hydrocarbons;  Endosulfan;  Mirex; Pentachlorophenol;  Phenol;
                   Acrylonitrile;   Asbestos; Benzene,  Beryllium;  Chlorinated Naphtha-
                   lene; 2-Chlorophenol; Chlorophenols; Chlorophenoxy herbicides;  Bya-
                   nide; 2,4-Dichloraphenol, Acrolein; Cloradane; Nitrosamines; Copper;
                   dichlorobenzenes; Guthion;   Haloethers;  Heptachlor;   Hexachloro-
                   butadiene;  Hexachlorocyclohexane; Isophorone;  Lead;  Methoxychlor;
                   nitrophenols; Parathion;  Phtalate  Esters; PCB's; Selenium, P-Dioxin;
                   Thallium, Toluene; Toxaphene; Zinc, 2,4-dimethylphenol;

                   (42) "turbidity" means  an expression of  the  optical  property  that
                   causes light to be scattered and absorbed rather than transmitted in
                   straight lines through a water sample; turbidity in water  is caused by
                   the presence of suspended matter  such  as clay, silt,  finely divided
                   organic  and  inorganic  matter,  plankton,  and  other  microscopic
                   organisms;

                   (43) "waters" means lakes, bays, sounds, ponds, impounding reservoirs,
                   springs,  wells, rivers,  streams, creeks,  estuaries, marshes, inlet,
                   straits, passages,  canals, the Pacific Ocean,  Gulf of Alaska,  Bering
                   Sea and Arctic Ocean in the territorial limits  of the  state, and  all
                   other bodies  of surface or underground water, natural or artificial,
                   public or private, inland  or coastal, fresh or salt, which are wholly or
                   partially in or  bordering upon the  state or under jurisdiction  of the
                   state;  "waters" does  not include  ponds,  lagoons or parts of  waste-
                   water  treatment systems  which  are lined or constructed in  such a
                   manner that seepage into the ground is not allowed;
                                        - 5-

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Alaska (con't)
Arizona1
Arkansas
          A
California
Colorado1
(44) "water  recreation" means  contact  recreation and/or secondary
recreation as defined in this section;

(45) "water  supply" means  any  of the waters of the state which are
designated to be protected for fresh  water or  marine water  uses
including waters used  for drinking, culinary, food processing, agricul-
tural, aquacultural, seafood processing, and industrial purposes;

(46)  "wildlife"  m^ans all  species  of  mannals,  birds,  reptiles and
amphibians.

1. "Cold water fishery" means waters having an environment suitable
for salmonids.

2. "Fecal coliform" means those bacteria of the coliforn group which
give  positive results from  tests   performed,  as  guided by the
document,  "Standard  Methods  for   the Examination of Water and
Waste water".

3. "Mg/1" means milligrams per liter of water.

4. "pH" means  the  reciprocal of the logarithm  of the  hydrogen-ion
activity.

5. "Surface  water"  means  waters  of the  state but  excludes ground
water as defined in A.R.S. 145-301.

6. "Warm  water fishery" means waters having an environment suit-
able for all species of fish other than salmonicfe.

B. All terms defined in A.R.S. 1 36-1851 are applicable  when used in
these standards.

Not specified

See State Standards for specific definitions.

(1) "ACT" means the Colorado Water  Quality Control Act,  C.R.S.
1973, 25-8-101 etseq., as amended.

(2) "ANTIDEGRADATION  STANDARD" means;  the  standard  esta-
blished in Section 3.1.8.

(3) "BASIC  STANDARDS"  means those standards  as established  in
Section 3.1.11.

(4) "BENEFICIAL USES" means those ues  of the waters of the State
to be protected such as those identified in the classification system.

(5) "BMP"  (Best Management  Practices) means  a practice or  a
combination of practices  that is   determined  by  a  governmental
                                        - 6-

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Colorado (con't)    agency  after  problem   asessment,   examination  of   alternative
                   practices,  and  appropriate  public  participation,  to be  the most
                   effective, practicable (including technological, economic, and institu-
                   tional considerations) means  of preventing or reducing the amount of
                   pollution generated by nonpoint  sources  to a level compatible with
                   quality goals.

                   (6)  "COMMISSION"  means  the   Colorado Water  Quality  Control
                   Commission.

                   (7) "DIVISION" means  the Division of Administration of the Colorado
                   Department  of Health of which the Water Quality Contraol Division
                   is a part.

                   (8)  "FEDERAL  ACT" means  the Clean Water  Act, U.S.C.  Section
                   1251 etseq., as amended.

                   (9) "LC-50" means  the concentration of a parameter that  is lethal to
                   50% of the test organisms within  a defined time period.

                   (10) "MIXING ZONE" means  that area of  a water body designated on
                   a case-by-case basis by the  Division which is contiguous to  a point
                   source and in which standards may not apply.

                   (11) "NUMERIC  VALUE"  means  the  measured concentration of a
                   parameter.

                   (12)  "PARAMETER"  means  the  chemical   constituents or  other
                   characteristics of  the water such  as  algae, fecal  coliform, total
                   dissolved solids, dissolved  oxygen, or the magnitude of radioactivity
                   levels,  temperature,  pH,   and   turbidity,  or   other   relevant
                   characteristics.

                   (13) "PERMIT"  means  a National  Pollutant  Discharge  Elimination
                   System (NPDES) permit or  other state water quality permit.

                   (14) "SALINITY" means total  dissolved solids (TDS).

                   (15) "STANDARD"  means a narrative  and/or  numeric  restriction
                   established  by the  Commission  applied to waters  of the State to
                   protect one or more beneficial uses of  such waters.  Whenever only
                   numeric or only narrative  standards are intended,  the wording shall
                   specifically designate which is intended.

                   (16) "TABLES"  means  Tables I, II, III,  and IV  appended   to  the
                   Regulations,  which set forth accepted levels for various parameters
                   which will generally protect  the  beneficial uses  of the waters of the
                   State. These Tables are not adopted as regulations.

                   (17) "USES" - see Beneficial uses.
                                        -7-

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Colorado (con't)
Connecticut
         r»
Delaware
(18)  "WATERS OF THE  STATE" means  any  and all  surface  and
subsurface waters which are contained in  or flow  in or through  this
State except waters in sewage system, waters in treatment works of
disposal systems, waters in potable water distribution systems,  and
all  water  withdrawn  for use until use  and  treatment  have  been
completed.   "Waters  of the  State", "waters", "State waters",  and
"water  bodies"  are used  interchangeably  and mean  surface  and
groundwaters of Colorado coming under the above  definition.  When-
ever only surface or only groundwater  is intended, the wording shall
specifically designate which is intended.

(19) "WATER QUALITY  STANDARD" means standard.

Not specified

Agiculture: The use of  land in the production of food,  fibre,  and
timber products.

Anadromous Fish: Any species of fish  which mature in the sea, and
migrate upstream to spawn.

Antidegradation:  Any action or plan of action which stops or reverses
the lowering of water quality.

Department:  Department, of Natural Resources and  Environmental
Control.

Degradation: Any adverse change in water  quality.

Designated Water uses:  Primary assignment for a stream segment as
set forth by the Department herein at Section 8.

Drainage: The process of reducing the amount of water from the soil.

Fish,  Aquatic Life &  Wildlife:  All animal  life found in Delaware,
either indigenous  or migratory, considered game or not, including any
and all endangered species and eggs  thereof.

Food  Web: The complex feeding relationships between ail species.

High  Quality  Waters:  Waters whole  quality as determined  by the
Department is better than the established  water quality standards for
one or more specified parameters.

Industrial  Water  Supply:   Any  stream or  impoundment  used  as   a
source  of water  for  any industrial purpose,  including non-contact
cooling.

LC-50 Value: The concentration of  pollutant in waters that is lethal
to 50%  of the test organisms during  a specified period of time.

Mixing  Zone: A  mixing zone  is  an area  contiguous!  to  a discharge
where receiving water quality may  meet  neither all quality criteria
nor  requirement  otherwise  applicable  to  the   receiving  water.
Requirements for mixing zones are described in Section 5.

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Delaware
 (con't)
Florida
Navigation:  Use of the  water for the  transfer and  transport of
persons, animals and goods.

Non-Tidal Waters: Waters which have no cyclic ebb and flow.

Primary Contact Recreation: Uses involving  prolonged intimate body
contact with water  in which there  is a significant  risk of ingestion
(e.g., swimming, water skiing).

Public Water Supply: Any stream or impoundment used as a source of
drinking water and may include other specified uses.

Secondary Contact Recreation:  Uses involving water as a pleasurable
setting for activities in  which there  is an insignificant  risk of
ingestion (e.g., boating, fishing, picnicking, hiking, wading).

Shellfish:  Any fresh, brackish or saltwater Mollusk, whether edible or
not, regardless  of the reason,  is to be considered  a shellfish (e.g.,
clams, mussles,  oysters).  This definition includes eggs  of all applic-
able species.

Transition  Zone: Areas between two adjacent zones  of varying water
quality or hydrologic conditions.

Temperature: The normal temperature for  streams is the average
daily temperature for the month.

Tidal Waters: Water  which ebbs and flows cyclically.

Toxic  Substances:   All  materials,  whether  organic  or  inorganic,
considered  harmful  (synergistically or otherwise) to humans, fish,
wildlife or aquatic life.

(1)  "Acute  Toxicity"  shall  mean  the presence  of one or  more
substances or characteristics or  components of substances in amounts
which:

(a)  are greater than one-third  (1/3) of the amount  lethal to 50% of
the test organisms in 96 hours (96 hr. LC50)  where the 96 hr LC50 is
the lowest value which has been determined for  a species significant
to the indigenous aquatic community; or

(b)  may reasonably be expected, based upon evaluation by generally
accepted scientific methods, to produce effects, equal to those of the
concentration of the substance specified in (a) above.

(2) "Background" shall mean the condition of waters in the absence of
the  activity or  discharge under consideration,  based  on the best
scientific information available to the Department.
                                                                 •
(3)  "Chronic Toxicity"  shall  mean  the  presence of  one or  more
substances or characteristics or  components of substances in amounts
which:
                                         -9-

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Florida             (a) are greater than one-twentieth (1/20) of the amount lethal to 50%
  (con't)           of the test organisms in 96 hours (96 hr. LC50) where the 96 hr.  LC50
                   is the lowest  value  which has been determined for a species signi-
                   ficant to the indigenous aquatic community; or

                   (b) may reasonably be expected, based upon evaluation by generally
                   accepted scientific methods, to produce effects equal  to those of the
                   concentration  of the substance specified in (a) above.

                   (4)   "Commission"  shall   mean   the  Environmental  Regulation
                   Commission.

                   (5) "Compensation Point for Photosynthetic Activity"  shall mean the
                   depth at  which one percent of  the  light  intensity at the surface
                   remains unabsorbed.  This depth shall be computed as  two divided by
                   the extinction coefficient.

                   (6) "Department" shall mean the Departmet of Environmental Regu-
                   lation.

                   (7) "Designated  Use" shall  mean the present  and future most bene-
                   ficial use  of  a  body of  water  as designaed  by  the  Environmental
                   Regulation  Commission  by  means  of  the  classification  system
                   contained in this Chapter.

                   (8) "Dominance" shall mean  the presence of species of  communities in
                   greater numbers, biomass, or areal extent  than competing species  or
                   communities,  or a  scientifically accepted tendency  of species  or
                   communities to achieve such a status under existing or reasonably
                   anticipated conditions.

                   (9) "Elluent Limitation"  shall mean any restriction established by the
                   Department on quantities,  rates or concentrations of  chemical,
                   physical, biological or other constituents which are discharged from
                   sources into waters of the state.

                   (10)  "Exceptional  Ecological Significance" shall mean that a water
                   body is part  of an  ecosystem  of unusual value.   The  exceptional
                   significance may be in unusual species, productivity, diversity, ecolo-
                   gical relationships, ambient water quality, scientific  or educational
                   interest, or in other aspects of the ecosystem's setting or proceses.

                   (11)  "Exceptional Recreational Significance" shall mean unusual value
                   as a resource for  outdoor recreation activities.  Outdoor recreation
                   activities, include, but are not limited to,  fishing,  boating, canoeing,
                   water skiing,  swimming, scuba  diving, and nature observation, the
                   exceptional significance may be in the  intensity  of present  recrea-
                   tional usage, an unusual quality of recreational experience, or posses-
                   sing a potential for unusual  future recreational use or experience.

                   (12)  "Extinction Coefficient" shall mean: (1/D) log 10 (Sg/SjJ where I)
                   is the length of the light path, S0  is the light intensity at the surface
                                                  &
                                        -10-

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Florida             or the transmission value of light  through a distilled or deionized
  (con't)            water sample of thickness D, and SD is the light intensity at depth D
                   or the transmission value of light  through a sample  of  the water
                   tested of thickness D.  Light intensities or  transmission values shall
                   be measured using  a  cadmium  sulfide protoreceptor or other device
                   having a  comparable spectral response.

                   (13) "Groundwater" means water beneath the surface of the ground,
                   whether or not flowing through  known and definite channels.

                   (14) "Natural Background" shall means the condition of waters in the
                   absence  of man-induced alterations based on  the  best scientific
                   information available to the Department.

                   (15) "Nuisance Species" shall mean species  of flora  or fauna  whose
                   presence in sufficient number,  biomass, or areal extent may reason-
                   ably be  expected  to prevent, or  unreasonably interfere  with,  a
                   designated  use of those waters.

                   (16) "Nursery Area of Indigenous Aquatic Life"  hall mean any bed of
                   the following aquatic plants, either in monoculture or mixed:  Halo-
                   duie spp.,  Halophila Engelmannii,  Potamogeton spp., (pondweed),
                   Ruppia maritima, (widgeon-grass), Sagittaria spp. (arrowhead),  Syrin-
                   godium   filiforme,  (manatee-grass), Thallasia  testudinum  (turtle
                   grass), or Vallisneria spp. (eel-grass), or  any area used  by  the  early-
                   life stages, larvae and post-larvae, of aquatic life during the period
                   of rapid growth and development into the juvenile stages.

                   (17) "Pollution shall mean the presence  in the outdoor atmosphere or
                   waters of the state of any substances, contaminants, noise, or  man-
                   made or  man-induced alteration of the chemical, physical, biological
                   or radiological integrity of air or water in quantities or levels which
                   are or may be potentially harmful  or injurious  to  human health or
                   welfare,  animal or  plant  life,  or  property,  including  outdoor
                   recreation.

                   (18) Predominantly  Fresh Waters" shall mean those surface waters in
                   which the specific  conductance of the  water at the surface is less
                   than 5,000  micromhos per centimeter.

                   (19) "Predominantly Marine Waters"  shall mean those surface waters
                   in which the specific conductance  of  the  water at the  surface  is
                   greater than or equal  to 5,000 micromhos per centimeter.

                   (20) "Propagation" shall mean reproduction sufficient to maintain the
                   species' role in its respective ecological community.

                   (21) "Secondary and Tertiary Canals" shall mean any wholly artificial
                   canal or ditch which is behind a control structure and which is  part of
                   a water  control system  that is connected  to  the works  feet  for in
                   Section 373.086, F.S.) of  a water management district created under
                   Section 373.069, F.S., and that is  permitted by such water manage-
                                        -11-

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Florida             ment district  pursuant   to  Section  373.103,  Section 373,412, or
  (con't)           Section 373.416 F.S.

                   (22)  "Secretary"  shall  mean  the Secretary of  the Department of
                   Environmental regulation.

                   (23)  "Shannon-Weaver Diversity Index" shall mean: negative summa-
                   tion  (i-1 to S) of (n./N) log, (N.N) where S is the number of species in
                   a sample, N is the lotal number of individuals in species i.

                   (24)  "Special Waters" shall mean water bodies designated in accord-
                   ance with 17-3.041 by the Environmental Regulation commission for
                   inclusion  in  the  Special Waters  Category  of  Outstanding  Florida
                   Waters,  as  contained in Section 17-3.041, Florida  Administrative
                   Code.  A Special Water may include all or part of any water  body.

                   (25)  "Surface  Water" means water  upon the surface  of the  earth,
                   whether contained in bounds  created  naturally or  artificially or
                   diffused.  Water  from natural springs shall be  classified as surface
                   water when it exits from the spring onto  the earth's surface.

                   (26)  "Waters"  shall be  as  defined  in Section  403.031 (3),  Florida
                   Statutes.

                   (27)  "Zone  of  Discharge"  shall  mean  a volume  underlying or
                   surrounding the point of  discharge within which  an opportunity for
                   the treatment, mixture or dispersion of wastes into receiving ground-
                   waters has been afforded.

                   (28)  "Zone of Mixing" shall  mean a volume of surface water contain-
                   ing the  point or area of discharge and within which an opportunity for
                   the  mixture of  wastes  with receiving surface  waters  has  been
                   afforded.
        o
Georgia           All terms used in this Paragraph  shall be interpreted in accordance
                   with definitions as set  forth  in  the  Act  and  as otherwise  herein
                   defined:

                   (a) Reasonable and  necessary  uses" means drinking water supplies,
                   conservation of  fish, game  and other  aquatic life,  agricultural,
                   industrial, recreational, and other legitimate uses.

                   (b) "Shellfish" refers to  clams, oysters,  scallops,  mussels, and other
                   mollusks.

                   (c) "Intake temperature" i   he natural or background temperature of
                   a  particular water body  unaffected  by any man-made  discharge or
                   thermal input.

                   (d) "Coastal waters" are those littoral recreational  waters on  the
                   ocean side of the Georgia coast.
                                        -12-

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      Q
Hawaii             "Ambient conditions"  means  the existing conditions  in surrounding
                   waters not influenced my man.

                   "Brackish waters" means waters with dissolved inorganic ions (sali-
                   nity) greater than 500 ppm (parts  per million), but less than 30,000
                   ppm.

                   "Fresh waters" means  all waters with dissolved inorganic ions of less
                   than 500 ppm.

                   "Saline  waters" means water  with dissolved inorganic ions  greater
                   than 30,000 ppm.

                   "State waters" means all waters, fresh,  brackish, or salt, around and
                   within the  State  of  Hawaii  which includes all  the  islands  of the
                   Hawaiian Archipelago  together with  their  appurtenant reefs and
                   waters except the Midway Islands.

                   "Best degree of  treatment or  control" means  that  treatment  or
                   control which is required by applicable statutes and regulations of the
                   State of  Hawaii and  the  Federal  Water Pollution Control  Act,  as
                   amended, or which is otherwise specified by  the Director considering
                   technology  or management practices currently available in  relation
                   to the public interest.

                   "Streams" means seasonal or  continuous water  flowing in all or part
                   of natural channels as a  result of either  surface water runoff  or
                   ground water influx, or  both.  Streams  may  be either "perennial"  or
                   "intermittent".

                   "Perennial streams"  means  fresh  waters flowing down altitudinal
                   gradients in definite  natural  channels, portions of which   may  be
                   modified.  In such streams, flowing water is present all year though
                   volume  may vary.  Such streams  may be  continuous, with water
                   flowing to  the  ocean all year,  or interrupted, having  flow and/or
                   ecologicaly  significat bodies of water only in parts of the  channel,
                   with seasonal discharge to the ocean.

                   "Intermittent streams1' means fresh water  flowing down altitudinal
                   gradients in definite natural channels only during part of the year.

                   "Springs and seep^' means small, perennial, relatively constant fresh
                   water flows not in distinct channels, such  as wet  films, or  trickles
                   over rock surfaces, in  which the  wat^r emanates  from  elevated
                   aquifers.    Springs  and   seeps  may be either stream associated,
                   occurring in deeply cut  valleys and contributing to stream flow:  or
                   coastal,  occurring on coastal  cliffs  and usually  flowing  into the
                   ocean.

                   "Natural lakes"  means deep standing water that is always  fresh,  in
                   well-defined natural basins.
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Hawaii
  (con't)
Idaho
     10
"Reservoirs" means deep standing water that is always fresh, in well-
defined artificially created impoundments.

"Elevated wetlands"  means  shallow  standing  water that  is always
fresh, in more or less indistinct basins such as natural bogs,  ponds,
and marshes.   Such  wetlands are found in undisturbed  areas, mainly
remote  uplands and forest reserves.

"Low  wetlands" means  shallow  standing water that is  always fresh,
ponds or marshes.   Such wetlands are found  in lowland areas near
coasts or in valley termini  modified by  man.  Their origin may be
natural  or man made.

"Coastal-wetlands" means  natural or  man-made ponds  and marshes
having variable salinity, basin limits, and permanence.  Such wetlands
usually  adjoin  the  coastline but  are not surface  connected to the
ocean except in rare circumstances.  They  are usually without tidal
fluctuations.  Most are  characterized by introduced biota, especially
fishes.

"Anachialine pools" means standing waters  that  vary in salinity and
basin  limits and are  not surface  connected to the ocean  except in
rare circumstances.   Such pools are natural  brackish water  exposures
which are near coastlines in recent lavas  (rarely, in fossil reefs) and
which have  tidal  fluctuations.  They are usually small,  shallow pools
of low salinity (1,000  to 10,000 ppm) with distinctive biota but usually
no fishes.

"Estuaries"  means deep characteristically brackish coastal  waters in
well-defined basins with a continuous or seasonal surface connection
to the ocean that allows entry of marine fauna.  Estuaries may be
either natural,  occurring  mainly at  stream  or  river  mouths; or
developed,  artificially or strongly modified from  the natural state,
such as  dredged and revetted stream termini.

Appropriate Beneficial  Use: Any of the varius  uses  which may be
made  of the Water of Idaho, including, not  not limited to, domestic
water supplies, industrial water supplies,  agricultural water supplies,
navigation,  recreation  in and on  the  water,  wildlife habitat, and
aesthetics.  Appropriateness is dependent upon actual use, the ability
of a water to support a non-existing use either now or in the future,
and its likelihood of being used in a given manner. The use of a water
for the  purpose of wastewater  dilution or  as  a  receiving water for
waste treatment facility effluent is not an appropriate use.

Biochemical Oxygen  Demand (BOD: The measure  of the amount of
oxygen  necessary to  satisfy the biochemical oxidation requirements
of organic  materials at  the time the  Sample  is collected;  unless
otherwise specified,  this term  will mean  the  five  (5)  day  BOD
incubated at 20° C.

Biota: The plants and  animals of a specified area
                                        -14-

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Idaho              Board: The Board of Health and Welfare
  (con't)
                   Daily Average: The average  of measurements  made over a twenty-
                   four (24) hour period.

                   Deleterious Material: Any substance which may cause the tainting of
                   edible species  of  fish, taste,  and odors in drinking water supplies, or
                   the reduction of the usability of water without causing physical injury
                   to water users.

                   Department:  The Idaho Department of Health and Welfare.

                   Desirable  Species: Species indigenous to the area or those introduced
                   by the Department of Fish and Game.

                   Director:  The Director of the Department of Health and Welfare or
                   his authorized  agent.

                   Discharge: When  used without qualification, the release of a pollutant
                   into the waters of the State.

                   Disinfection:   A method of reducing the pathogenic  or objectionable
                   organisms by means of chemicals or other acceptable means.

                   Dissolved  Oxygen  (DO):  The  measre  of  the  amount  of  oxygen
                   dissolved in the water, usually expressed in mg/1.

                   Effluent: Any wastewater discharged from a treatment facility.

                   EPA: The  U. S. Environmental Protection Agency

                   Fecal Coliform: The portion of  the coliform group of bacteria present
                   in the  gut and feces of warm-blooded animals, usually expressed as
                   number of organisms/100 mg of  sample

                   Geometric Mean: The geometric mean of "n" quantities is the "nth"
                   root of the product of the quantities.

                   Hazardous Material:  A material or combination of materials which,
                   when  discharged  in  any  quantity into State  waters,  presents  a
                   substantial present or  potential hazard to human health, the public
                   health, or the environment. Unless otherwise  specified, published
                   guides such as Quality Criteria, for Water (1976) by  E.P.S., Water
                   Quality Criteria  (Second  Edition,   1963) by  the  State of California
                   Water  Quality  Control Board,  their subsequent revisions, and more
                   recent research  papers,  regulations and guidelines  will  be  used in
                   identifying individual and specific materials and in evaluating  the
                   tolerances of  the  identified  materials  for   the  beneficial  uses
                   indicated.

                   Hypolimnion:  The deepest zone  in a  thermally-stratified body of
                   water. It  is fairly uniform  in temperature and  lies beneath a zone of
                   water  which exhibits a rapid  temperature drop  with depth of at least
                   1  C per meter.
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Idaho              Man-made Waterways:  Canals, flumes, ditches, and similar features,
  (con't)           constructed for the purpose of water conveyance.

                   Milligrams per Liter (mg/1): Milligrams of solute per liter of solution,
                   equivalent to parts per million, assuming unit density.

                   Mixing  Zone:  A defined area or volume of the receiving  water
                   surrounding  or adjacent  to  a  wastewater  discharge  where  the
                   receiving water,  as  a  result  of the discharge,  may not  meet  all
                   applicable water  quality criteria  or  standards.  It is considered a
                   place where wastewater mixes  with receiving  water and not as a
                   place where effluents are treated.

                   Nonpoint Source:  A  geographical area from  which  pollutants are
                   dissolved or suspended in water  applied to or  incident on  that area,
                   the resultant mixture being discharged into the waters of the State.

                   Nutrients: The major substances necessary  for the growth and repro-
                   duction of aquatic plant life, consisting of nitrogen, phosphorus, arid
                   carbon compounds.

                   Outstanding  Resource Water:  Those specific segments  or  bodies of
                   water which  are recognized  as having outstanding  or  unique
                   characteristics which enhance beneficial uses  and result in the need
                   of intensive protection.

                   Person:   An individual,  corporation, partnership, association, state,
                   municipality,  commission, political subdivision  of the  state, state
                   agency, federal agency, special district or interstate body.

                   Petroleum  Products:    Products  derived  from  petroleum  through
                   various refining processes.

                   Point Source:  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, or vessel  or other floating  craft,  from  which
                   pollutants are, or  may be, discharged.

                   Pollutant:  Dredged spoil, solid waste, incinerator residue, sewage,
                   garbage,  sewage  sludge,  munitions,  chemical  waste,  biological
                   materials, radioactive materials, heat, wrecked or discarded equip-
                   ment, rock, sand, silt, cellar  dirt;  and  industrial,   municipal  and
                   agricultural  waste,  gases entrained  in  water; or other materials
                   which, when discharged to  water in excessive  quantities, cause or
                   contribute to water pollution.

                   Primary  Treatment:  Processes  or  methods that serve  as  the first
                   stage treatment  of  wastewater, intended  for removal of suspended
                   and settleable  solids by gravity sedimentation; provides no changes in
                   dissolved anc! colloidal matter in the sewage or wastes flow.
                                         -16-

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Idaho              Receiving Waters:  those waterways which  receive pollutants from
  (con't)            point or nonpoint sources.

                   Schedule of Compliance:  A schedule  of remedial measures  which
                   may include an enforceable sequence of actions or operations leading
                   to compliance  with an effluent limitation,  other  limitation,  prohi-
                   bition, or standard.

                   Secondary  Treatment: Processes  or  methods  for  the  supplemental
                   treatment  of  wastewater, usually following primary treatment,  to
                   affect additional improvement in the quality  of the treated wastes  by
                   biological means of varius types  which are  designed to remove  or
                   modify organic matter.

                   Sewage: The water-carried human or animal waste from residences,
                   buildings,  industrial establishments or  other places, together with
                   such groundwater infiltration and surface water as may be present.

                   Sludge: The semi-liquid  mass  produced  by partial  dewatering  of
                   potable or spent process waters of the wastewater.

                   State: The State of Idaho

                   Subsurface Disposal:   Disposal  of effluent below ground surface,
                   including, but not limited to drainfields or sewage beds

                   Treatment:  A  process  or activity conducted  for the  purpose  of
                   removing pollutants from wastewater.

                   Unique Ecological Significance: The attribute of any stream or water
                   body which is inhabited or supports an endangered species of plant or
                   animal, which provides  anadromous fish  passage, or  which provides
                   spawing or rearing for anadromous or lake dwelling fishes.

                   Wastewater:  Unless otherwise specified, sewage,  industrial  waste,
                   agricultural waste,  and associated solids or  combinations of  these,
                   whether treated or untreated, plus any runoff from the land.

                   Water  Pollution:  Any alteration of the physical, thermal, chemical
                   biological,  or radioactive properties of any  waters of  the State,  or
                   the discharge of any pollutant into the waters of the State, which will
                   or is likely to create a nuisance or to the render such waters harmful,
                   detrimental or injurious  to public health, safety  or welfare, or  to
                   domestic, commercial, industrial,  recreational, aesthetic, or other
                   beneficial uses.

                   Waters and  Waters of the State:  All  the accumulations of  water,
                   surface and underground, natural and artificial,  public and private, or
                   parts thereof which are wholly or partially within, which flow through
                   or border  upon the  State, except  those privately or  publicly  owned
                   man-made waterways or impoundments designed and utilized exclu-
                   sively as a component of a wastewater treatment system.
                                        -17-

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Illinois             Act: means the Illinois Environmental Protection Act.

                   Administrator:  means  the  Administrator  of  the  United  States
                   Environmental Protection Agency or his designee

                   Agency: means the Illinois Environmental Protection Agency

                   Aquatic Life: means native populations of fish and other aquatic life

                   Artificial Cooling Lake: means any manmade lake, reservoir or other
                   impoundment, constructed by damming the flow of a stream, which is
                   used to cool the waters discharged from the condensers of a steam-
                   electric generating plant  for recirculation in substantial part to the
                   condensers.

                   Basin: means the area tributary to the designated body of water.

                   Board: means the Illinois Pollution Control Board

                   Calumet River System: means the Calumet River, the Grand Calumet
                   River, the Little Calumet River downstream from its confluence with
                   the Grand  Calumet, the Calumet-Sag  Channel, and the  Calumet
                   Harbor Basin

                   Chicago River System: means the Chicago River and its Branches,
                   the North Shore Channel,  and the Chicago Sanitary and Ship Canal

                   Combined  Sewer: means a sewer designed and  constructed to receive
                   both wastewater and land  runoff

                   Combined  Sewer  Service  Area:  means  a  specific  geographical
                   drainage area served by a combined sewer system. Areas served by
                   separate sewer  systems   which enter  the combined system  are not
                   included.  Undeveloped areas within a combined sewer service area
                   may be included in that  area if deemed appropriate  by the Agency
                   pursuant to the guidelines in Rule  602(a)

                   Construction: means commencement of on-site fabrication, erection,
                   or installation of a treatment works, sewer,  or wastewater source;  or
                   the reinstallation at a new site  of  any existing treatment  works,
                   sewer or wastewater source

                   Dilution Ratio: means the ratio of the seven-day once in ten year low
                   flow  of the  receiving stream  or  the lowest  flow of the receiving
                   stream when effluent discharge is expected to occur, whichever is
                   greater, to the  average flow of the treatment works for the design
                   year.

                   Effluent: means any wastewater discharged, directly or indirectly,  to
                   the waters of the State or to any storm sewer, and the runoff from
                   land used  for the disposition of wastewater or sludges, but does not
                   otherwise  include nononpoint source  discharges such  as runoff from
                   land or any livestock management facility or livestock waste handling
                   facility subject to regulation under Chapter 5 of the regulations  of
                   the Pollution Control Board.
                                       -18-

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Illinois             "FWPCA"  means  the  Federal Water  Pollution  Control  Act,  as
  (con't)            amended, 33  U.S.C. 1251 et seq. Public Law 92-500,  enacted  by the
                   Congress October 18,  1972, as amended

                   Hearing Board: shall mean an  Agency hearing board of one or more
                   employees  appointed  by the Director in acordance with the require-
                   ments of Rule 909(b) hereof, which shall  conduct public hearings and
                   make recommendations  to the Agency with respect to the issuance or
                   denial of NPDES permits

                   Industrial Wastes: means any solid, liquid, or gaseous wastes resulting
                   from any process  or  excess energy  resulting from any  progress of
                   industry, manufacturing, trade, or business or from the development,
                   processing  or recovery, except for agricultural  crop  raising,  of  any
                   natural resource

                   Institute: means the Illinois Institute of Natual Resources

                   Interstate  Waters: are  all  waters which  cross  or form part  of  the
                   border between Illinois and other states

                   Intrastate  Waters:  are all the  waters   of  Illinois  which  are  not
                   interstate waters

                   Land Runoff: means water reaching the waters of the State as runoff
                   resulting from precipitation

                   Marine Toilet: means any toilet on or within any watercraf t

                   Modification  means:
                   (1) Any physical change in a treatment works  which involves different
                   or additional  processes or equipment or which increases or decreases
                   the capacity or efficiency of the treatment works; or

                   (2) Any change in the number of location of points where effluent is
                   discharged, directly or indirectly to the waters; or

                   (3) Any change  in any components of a sewer system which alters the
                   quanitity  of  wastewater  capable of  being conveyed,  or  which
                   increases or descreases  the quantity of wastewater capable of being
                   discharged at overflow or bypass structures; or

                   (4)  Any increase in  quanitity  or strength of a  discharge  from  any
                   wastewater source, unless  such increase  does not exceed an  upper
                   limit  specifically  allowed  by  an  excisting  Permit granted by  the
                   Agency and does not involve any additional contaminants contained in
                   standards set by this Chapter that are not itemized and approved in
                   an existing Agency permit.

                   New Source:  means any wastewater source, the construction of which
                   is commenced  on or after  the effective date  of  the  applicable
                   provisions of  this Chapter
                                        -19-

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Illinois             NPDES: means the National  Pollutant Discharge Elimination system
  (con't)            for issuing, establishing conditions for, and denying  permits  under
                   Section 402  of the FWPCA.   All terms used  in  connection with
                   NPDES which  have  been defined in  the FWPCA or regulations
                   adopted thereunder shall have the meanings specified therein,  unless
                   specifically noted otherwise

                   Other  Wastes:  means  garbarge,  refuse, wood  residues, sand, lime,
                   cinders,  ashes,  offal,  night  soil, silt, oil, tar, dye  stuffs,  acids,
                   chemicals  and  all other substances not sewage  or  industrial  waste
                   whose  discharge would cause water pollution or a  violation  of the
                   effluent or water quality standards.

                   Person:  means  any  individual,  partnership,  copartnership,  firm,
                   company, corporation, association, joint stock company, trust, estate,
                   political  subdivision, state  agency, or any other legal entity, or their
                   legal representative, agent or assigns

                   Pollutant:  means  dredged spoil,  solid  waste,  incinerator residue,
                   sewage, garbage, sewage  sludge, munitions, chemical  wastes,  biolo-
                   gical  materials, radioactive  materials, heat, wrecked or  discarded
                   equipment,  rock,  sand, cellar  dirt  and  industrial, municipal  and
                   agricultural waste discharged into water.  This term does not mean
                   (A) "sewage from vessels'  within the meaning of  the FWPCA:  or (B)
                   water, gas,  or  other  material  which is injected  into a well to
                   facilitate production and disposed of in a well, if the well used  either
                   to facilitate production or for disposal purposes is  approved  by the
                   Department of Mines and Minerals, and if the Department  of'Mines
                   and Minerals determines that such injection or disposal will not result
                   in the degradation of ground or surface water resources

                   Population Equivalent:  is  a  term  used to evaluate the impact of
                   industrial or other waste  on a treatment works or  stream.   One
                   population  equivalent is 100 gallons  of sewage per day, containing
                   0.17 pounds of BODS and 0.20 pounds of suspended solids. The impact
                   on a treatment works is evaluated as the equivalent  of the highest of
                   the three parameters.  Impact on a stream is the higher of the  BODS
                   and suspended solids parameters

                   Pretreatment Works: means a treatment works designed and intended
                   for the treatment  of wastewater from a major contributing industry,
                   as defined in 40 CFR 128, before introduction  into a sewer system
                   tributary to a public owned or public regulated treatment works

                   (Editor's note: The federal  environmental  Protection Agency June 26,
                   1978 (43  FR 27736) replaced 40 CRF 128 — Pretreatment Standards-
                   -with  40 CFR  403—General  Pretreatment Regulations  for Existing
                   and New Sources of Pollution, effective August 25, 1978)

                   Primary  contact: means any recreational or other water use in which
                   there  is  prolonged and intimate  contact  with  the  water  involving
                   considerable risk of ingesting water in quantities sufficient to pose a
                   significant health hazard, such as swimming and water skiing
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Illinois             Public and Food  Processing  Water Supply: means  any water use in
  (con't)            which water is withdrawn from surface waters of the State for human
                   consumption  or for processing of food  products intended  for human
                   consumption

                   Publicly  Owned Treatment Works: means a treatment works owned
                   by  a municipality, sanitary  district, county,  or  state  or federal
                   agency, and which treats domestic and industrial wastes collected by
                   a publicly  owned or regulated sewer system.   Industrial  treatment
                   works which are publicly owned and financed by bond issues of public
                   agencies are not included in this definition

                   Publicly  Regulated  Treatment Works: means those  otherwise private
                   companies which are  regulated  as  public utilities engaged in the
                   disposal  of domestic and industrial wastes  and  regulated  as such by
                   the Illinois Commerce Commission, pursuant to an Act concerning
                   Public Utilities,  Illinois Revised  Statutes  1977, CH.lll  2/3;  par.l
                   et.seq.

                   Sanitary  Sewer: means a sewer that carries wastewater together with
                   incidental land runoff

                   Secondary  Contact: means  any recreational  or other water use in
                   which contact with  the water is either incidental or accidental and in
                   which the probability of ingesting appreciable quantities  of water is
                   minimal, such as fishing, commercial and  recreational boating and
                   any limited contact incident to shoreline activity

                   Sewage:  means  water-carried human arid related  wastes from any
                   source

                   Sewer: means a stationary  means  of transport or stationary system of
                   transport, excluding natural waterways, constructed and operated for
                   the purpose of collecting and transporting wastewater  or land runoff,
                   or both

                   Standard of Performance:  means  a  standard  for the  control of the
                   discharge of  pollutants,  promulgated by the Administrator pursuant
                   to Section 306 of the FWPCA, for  the control of the discharge of
                   pollutants which  reflects the greatest  degree of effluent reduction
                   which the Administrator determines  to be achievable through appli-
                   cation of the best  available demonstrated control technology,  pro-
                   cesses, operating  methods, or other alternatives, including, where
                   practicable, a standard permitting no discharge of pollutants

                   STORET: Means  the  national water  quality  data  .system  of the
                   Federal Environmental Protection Agency

                   Storm Sewer: means a sewer intended to receive  only land runoff

                   Treatment Works: means individually or collectively those construc-
                   tions or devices, (except sewers,  and  except constructions  or devices
                   used for the pretreatment of wastewater prior to its introduction into


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Illinois
  (con't)
Indiana
       12
publicly owned or regulated treatment  works)  used for collecting,
pumping, treating, or disposing of wastewaters or for the recovery of
by-products from  such wastewater

Underground  Waters: means any waters of the state located beneath
the surface of the earth

Wastewater:  means sewage, industrial waste, or other waste,  or any
combination of these, whether treated or untreated, plus any admixed
land runoff

Wastewater Source:  means  any equipment, facility, or other point
source of any type whatsoever which  discharges  wastewater, directly
or indirectly  (except through a sewer tributary to a treatment works),
to the waters of the State

Watercraft: means every type of boat, ship or barge used or capable
of being used as a means of transportation on water

Waters: means all accumulations of water, surface and underground,
natural, and artificial, public and private, or parts thereof, which are
wholly or partially within, flow through, or border upon  the State of
Illinois, except that sewers and treatment works  are not included
except  as  specifically  mentioned;  provided, that  nothing therein
contained shall authorize the use of  natural or  otherwise protected
waters as  sewers  of treatment  works except that in-stream aeration
under Agency permit is allowable.

Advanced  Treatment  -  Treatment in excess  of that  which can be
provided by secondary treatment.

Application Factor - A numerical factor  applied  to the median lethal
concentration to provide the concentration of a  toxic substance that
is considered  to be safe for organisms  in the waters of the State.

Average - Unless otherwise  specified, the arithmetical average  of a
set of numbers.

Board - The Indiana Stream Pollution Control Board.

Coliform  Bacteria  -  All  the aerobic and facultatively anaerobic,
gram-negative, nonsporeforming bacilli  that  produce acid and gas
from  the fermentation of lactose.

Community - A general  collective term to describe the varieties of
aquatic species and associated organisms living together in a water
body.

Effluent - A  wastewater discharge from  a point  source to the  waters
of the State.

Fecal Coliforms - Coliform  bacteria that produce gas from lactose in
a special, buffered broth incubated at 45.5  C.
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Indiana             Indigenous  - An organism  growing and reproducing  in a particular
  (con't)            region.

                   Mixing Zone - An area contiguous to a discharge where, as a result of
                   said discharge, receiving  water quality  may not meet all water
                   quality  standards.   Any time an effluent  is added  to  a receiving
                   waterway where the effluent is poorer in quality, there will be a zone
                   of mixing.    The  mixing zone should be  considered  a place where
                   wastes and receiving waters mix and not as a place where effluents
                   are treated.

                   Partial  Body  Contact - Any  contact  with water up to,   but  not
                   including, complete submergence.

                   Point Source - A discernible, confined and discrete  conveyance, from
                   which wastewater is or may be discharged to the waters of the State.

                   Policy - As employed herein, a statement of administrative practice
                   or decision-making  guidelines  to be followed or implemented to  the
                   maximum extent  feasible with respect  to an identified problematic
                   situation but to be  less  than  strictly enforceable  in contrast to  a
                   standard or rule of law.

                   Potable Water  Supply -  Water considered satisfactory for domestic
                   consumption which has physical, chemical, and bacteriological quali-
                   ties that meet the requirements set forth in applicable State Board of
                   Health and/or Environmental Management Board regulations.

                   Public Water Supply - Any wells, reservoirs, lakes,  rivers, sources of
                   supply, pumps, mains, pipes, facilities, and structures through which
                   water is obtained, treated as may be required, and supplied through a
                   water distribution system for sale to or consumption by the public for
                   drinking, domestic,  or other  purposes, including State-owned faci-
                   lities even though the water may not be sold to the public.

                   Secondary  Treatment - Municipal waste water treatment facilities
                   shall  be defined  as those necessary to meet  40  CFR, Part  133.
                   Secondary  treatment for combined sewer overflows  shall be deter-
                   mined by the Board.

                   Semi-Public Wastewaters - Domestic wastewaters which are public in
                   character although  collected and treated by an entity other than  a
                   Federal, State, or Municipal governmental entity (with the exception
                   of rural school corporations).   An example would be wastewaters
                   from a  mobile home park  or  residential subdivision  located outside
                   municipal corporation boundaries which are collected and treated by
                   a privately-owned sewage treatment facility.

                   Standard - A definite numerical value or narrative statement  promul-
                   gated by the Board to maintain or enhance  water quality to provide
                   for and fully protect a designated use of the waters of the State.
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Indiana             Toxic Substances - Materials which are or may  become  harmful to
  (con't)           plant or  animal life,  or to food chains when present in sufficient
                   concentrations or combinations.

                   Waters of  the State  - Such  accumulations of  water, surface  and
                   underground, natural  and  artificial, public and private,  or  parts
                   thereof, which are wholly or partially within, flow through, or border
                   upon, this State, but the terms does  not include any private pond, or
                   any  pond,  reservoir or  facility  built  for  reduction  or  control of
                   pollution or cooling of water prior to discharge unless the discharge
                   therefrom causes or threatens  to cause water pollution.

                   Water Use  Designations - A use  of the  waters  of the  State as
                   established by this regulation, including but not limited to industrial
                   water  supply,  agricultural use,  public  water  supply,  total body
                   contact, partial body contact,  fish and other aquatic life.

                   Well-Balanced Fish Community -  A fish comunity which is as diverse
                   in species composition and as  abundant in numbers or biomass at all
                   levels as  a particular aquatic habitat is capable of supporting.

                   Whole Body Contact  - Direct contact with  water to the point of
                   complete submergence.

    13
Iowa               "Act" means the Federal Water Pollution Control Act as amended by
                   the Federal Water Pollution Control Act Amendments of 1972 (Pub.
                   L. 92-500, 86 Stat. 816), 33 U.S.C.I 1251 et seq.

                   "Administrator"  means  the   administrator  of  the  United  States
                   Environmental   Protection Agency  (EPA)  401  "M"  Street,  S.W,,,
                   Washington D.C. 20460

                   "ASTM" means  "Annual Book of Standards, Part 31, Water, 1975"  The
                   publication is  available from  The American Society for Testing  and
                   Materials, 1916 Race St., Philadelphia, Pennsylvania 19103

                   "Best management practice" (BMP) means a practice or combination
                   of practices that is determined, after problem assessment, examina-
                   tion of alternative practices, and appropriate public participation, to
                   be the most effective, practicable (including technological, economic
                   and institutional considerations) means of preventing or reducing the
                   amount of pollution generated by nonpoint sources to a  level com-
                   patible with water quality goals.

                   "Biochemical oxygen demand (five-day)" means the amount of oxygen
                   consumed in the biological processes that break down organic matter
                   in water by aerobic biochemical action in five days at 20 C.

                   "Continuing planning process"  (CPP) means the  continuing planning
                   process,  including any revision thereto, required  by sections 208  arid
                   303(e) of the  Federal Water  Pollution Control Act as amended (33
                   U.S.C. si 1288 and 1313 (e) for state water pollution control agencies.
                                        -24-

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Iowa  (con't)       The continuing planning process is a time phased process by which the
                   department,   working  co-operatively  with   designated  areawide
                   planning agencies:

                   a.  Develops  a water quality  management decision-making process
                   involving elected officials of state and local units of government and
                   representatives  of  state  and local executive  departments that
                   conduct activities related to water quality management.

                   b.  Establishes  an  intergovernmental process (such  as co-ordinated
                   and co-operative programs with the state conservation commission in
                   aquatic life and recreation matters, deartment of soil conservation in
                   nonpoint source pollution control  matters, and the natural resources
                   council in water resources  matters) which provides for water quality
                   management decisions to be  made on an areawide or local  basis and
                   for the incorporation of such decisions  into a comprehensive and
                   cohesive statewide  program.  Through this  process, state regulatory
                   programs and activities will be incorporated into the areawide water
                   quality management decision process.

                   c. Develops a broad based public  participation feuch as utilization of
                   such mechanisms as  basin advisory  committees  composed  of local
                   elected officials, representatives  of areawide planning agencies, the
                   public  at large,  and conservancy district advisory committees) aimed
                   at both  informing  and  involving  the  public in  the water  quality
                   management program.

                   d. Prepares  and implements water quality management plans, which
                   identify  water  quality goals  and established  state water  quality
                   standards,  define  specific  programs,  priorities  and  targets  for
                   preventing and  controlling water pollution  in individual  approved
                   planning areas  and  establish  policies which  guide  decision-making
                   over at least a twenty-year span of  time  (in  increments of five
                   years).

                   e.   Based on the  results  of the statewide (state  and areawide)
                   planning process, develops the  state strategy to be updated annually,
                   which  sets the state's major objectives, approach, and priorities  for
                   preventing and controlling pollution over a five-year period.

                   f. Translates the state  strategy  into the annual state program plan
                   (required under section 106 of the Federal Act), which establishes the
                   program objectives,  identifies  the resources committed for  the state
                   program each year, and provides a mechanism for reporting progress
                   toward achievement of program objectives.

                   g.   Periodically reviews  and revises water quality  standards  as
                   required under Section 303(c) of the Federal Act.

                   "CFR" means the Code of Federal Regulations as published by the
                   Superintendent  of  Documents, U.S.  Government  Printing  Office,
                   Washington, D. C. 20402.
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Iowa  (con't)       "Deep well" means a well located and constructed in such a  manner
                   that there is a continuous layer of  low permeability soil  or rock at.
                   least five feet thick located at least 25 feet below the normal ground
                   surface and above the aquifer from which water is to be drawn.

                   "Department" means the department of environmental quality.

                   "EPA Methods" means "Methods for Chemical Analysis of Water and
                   Wastes",   1974,  Methods   Development  and  Quality  Assurance
                   Research  Laboratory,  National  Environmental  Research  Center,
                   Cincinnati,  Ohio  45268:  U.S.  Environmental  Protection  Agency,
                   Office  of Technology Transfer. Industrial Environmental Research
                   Laboratory,  Cincinnati, Ohio 45268.  This publication is available
                   from the Office of Technology Transfer.

                   "Fecal  coliform"  means the  portion of the coliform group which is
                   present in the gut or the feces of warm-blooded animals.  It includes
                   organisms which are capable of producing gas from lactose broth in a
                   suitable culture medium within 24 hours at 44.5 plus or minus 0.2°C.

                   "FR" means the Federal Register, published, daily by  the Office of
                   the Federal Register, National Archives and Record Service, General
                   Services Administration, Washington,  D.  C. 20408 and distributed by
                   the Superintendent of Documents, U. S. Government  Printing Office,
                   Washington, D. C. 20402

                   "Industrial  wastes" means  any solid,  liquid,  or gaseous  wastes or
                   excess  energy in the form  of  heat resulting from  any  process of
                   industry,  manufacturing, trade, or business, or from the development,
                   processing or recovery, except for  agricultural  crop raising, of an^
                   natural resources.

                   "Local public works department" means a city or county public works
                   department, a board of trustees of  a city utility organized pursuant
                   to chapter  388, Code of Iowa, or a  sanitary sewer district organized
                   pursuant to chapter 358, Code of Iowa.

                   "Low permeability" means a soil layer of well sorted, fine grain-sized
                   sediments or of rock that under normal  hydrostatic  pressures would
                   not be  significantly permeable.  Low permeability soils may include
                   homogenous clays below the zone of weathering rnudstone, claystone,
                   shale, and some glacial till.

                   "Major contributing industry" means an industrial user of a treatment
                   works that:

                   a. Has a flow of 50,000 gallons or more per average work day:

                   b.  Has a flow greater than five percent of the flow carried by the
                   treatment works receiving the waste:

                   c.  Has in its  waste a toxic pollutant in toxic amount as defined in
                   standards  issued  under  section  307(a) of  the Act  and adopted by
                   reference in 17.5(4558); or
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Iowa  (con't)       d.  Is found by the department in connection with the issuance of an
                   NPDES permit to  have a  significant  impact, either singly or in
                   combination  with other contributing industries, on  that  treatment
                   works or upon the quality of effluent from that treatment works.

                   "Milligrams per liter  (mg/1)" means  milligrams of solute per liter of
                   solution (equivalent to parts per million — assuming unit density). A
                   microgram (ug) is 1/1000 of a milligram.

                   "Navigable water" means a water of the United States.

                   "Nephelometric" means the  nephelometric method of determing  tur-
                   bidity as stated in Standard Methods, pp. 132-134.

                   "Nonpoint source" means  a source of pollutants that is not a point
                   source.

                   "NPDES permit" means an operation permit, issued after the depart-
                   ment has obtained approval of its NPDES program from the admini-
                   strator, that authorizes the discharge of  any pollutant into a navig-
                   able water.

                   "Pathogen"  means  any  micro-organism  or virus that  can  cause
                   disease.

                   "pH" means the hydrogen ion  activity of  a solution expressed as the
                   logarithm of the reciprocal of the hydrogen  ion activity in moles per
                   liter at 25  C. pH is a measure of the relative acidity or alkalinity of
                   the solution.  The range extends from 0 to 14; 7 being neutral, 0  to 7
                   being acidic, and 7 to  14 being alkaline.

                   "Point source" means any discernible, confined, and  discrete conve-
                   yance, including,  but  not limited to, any pipe, ditch, channel, tunnel,
                   conduit, well, discrete fissure, container,  rolling stock, concentrated
                   animal feeding operation, or vessel or  other  floating craft, from
                   which pollutants are or may be discharged.

                   "Primary  contact"  means  any  recreational or  other water use in
                   which  there is  prolonged  and intimate contact with  the water
                   involving considerable risk of  ingesting water in quantities sufficient
                   to pose significant health hazard, such as swimming and waterskiing.

                   "Records of  operation" means department of environmental  quality
                   report forms or such  other report forms,  letter or documents which
                   may be acceptable to the department that  are  designed  to  indicate
                   specific  physical, chemical  or biological values for  waste water
                   during a stated period of time.

                   "Regional administrator"  means the regional  administrator  of  the
                   United States  Environmental  Protection  Agency,  Region VII,  1735
                   Baltimore,  Kansas City, Missouri 64108.
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Iowa  (con't)
Kansas
       14
Kentucky
         15
"Secondary contact"  means any  recreational or other water use in
which contact with the water is either incidental or accidental and in
which the probability of ingesting appreciable quantities of water is
minimal, such as  fishing, commercial and recreational boating and
any limited contact incidental to shoreline activity.

"Shallow well" means  a well located and constructed in such a  manner
that there is not a continuous  five foot layer of low permeability soil
or rock between the  aquifer  from which the water supply is drawn
and a point 25 feet below the normal ground surface.

"Standard methods" means "Standard  Methods for the Examination of
Water and Waste  Water",  14th  Edition,  1975.  This  publication is
available from the American Public Health  Association, 1015  18th
Street, N.W., Washington, D.C. 20036.

"Temperature" m~ans  a measure of the heat content of water.

"Turbidity" is a  measure of the optical property of the  particles of
mud, clay,  silt,  finely divided organic matter, or  microscopic
organisms suspended in  water that interfere  with light transmission,
causing the light  to  be scattered and absorbed  rather  than trans-
mitted through the water in straight lines.

Not specified

Section 1. Definitions  and Abbreviations.
(1)  General  function  of  definitions.    The  following  definitions
describe terms used in  this chapter.  Terms not defined below  shall
have the meaning given to them in relevant statutes or, if not  defined
in statutes, the meaning attributed by common use.

(a)  "Aquifer"  means any formation of soil, sand, rock, gravel,  lime-
stone, sandstone, or other material or any fracture, crevice,  or void
in any space formation from  which underground water is or  may be
available.

(b)  "Coldwater aquatic habitat" means surface waters arid associated
substrate that will support indigenous aquatic life as well as  stocked
trout.

(c)  "Conventional  domestic  water  supply  treatment"  means  or
includes coagulation, sedimentation, filtration, and chlorination.

(d)  "Criteria" mean   pecific concentrations  of  water constituents
which,  if not exceeded, are  expected  to  result in an aquatic  eco-
system  suitable for designated  uses  of waterfe).  Such  criteria  are
derived to protect legitimate uses  such  as aquatic  life, domestic
water supply, and recreational use.

(e)  "Division" m^ans the Division of Water Quality.

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Kentucky           (f) "Effluent ditch" means that portion of a treatment system which
  (con't)            is a discreet, person-made conveyance, either totally owned, leased
                   or under  proper easement by  the discharger,  which transports a
                   discharge to waters of the Commonwealth.

                   (g) "Epilimnion" m  ans the thermally homogeneous water layer over-
                   lying the metalimnion (thermocline) of a lake.

                   (h) "Eutrophication" means the enrichment of waters of the State by
                   the discharge or addition of nutrients.

                   (i) "Fecal coliform" means the portion of the coliform group which is
                   present in the gut or the feces of warm-blooded animals.  It generally
                   includes organisms  which are capable of  producing gas from lactose
                   broth in a suitable culture medium within twenty-four (24) hours at
                   44.5 degrees plus or minus 0.2 degrees C.

                   (j) "Hypolimnion" means  the lower cold region of a stratified body of
                   water that extends from the metalimnion to the bottom  of the lake
                   and circulation is restricted  while stratified with the upper  waters
                   thereby receiving no oxygen from the atmosphere.

                   (k) "Indigenous  aquatic  life"  means naturally  occurring  aquatic
                   organisms including but not limited to bacteria, fungi, algae, aquatic
                   insects, other  aquatic invertebrates,  reptiles and  amphibians,  and
                   fishes.  Under some natural conditions one (1) or more of the above
                   groups may be absent  from any given surface water.

                   (1) "Intermittent stream" means  a stream that flows at certain times
                   of the year as when it receives water from springs or precipitation in
                   the immediate watershed.

                   (m) "LC-,," is  used  to  express  the results of bioassays  having
                   lethality as the criterion  of toxicity.  A numerical percentage is used
                   to indicate  the percentage  of  the test  animals killed  at  a given
                   concentration.

                   (n) "Low flow (seven  (7) day, once-in-ten (10) year low flow)" means
                   that  minimum average flow  which occurs for seven (7) consecutive
                   days  with a recurrence interval of ten (10) years.

                   (o) "Low flow  stream" means that  portion of a  watercourse  where
                   the low flow (not  attributable to  discharges  and other hydraulic
                   alterations) is one (1) cubic foot per second or less.

                   (p) "Median tolerance limit (TLm)" is a measure of the concentration
                   at which fifty (50) percent of the organisms survive.

                   (q) "Milligrams  per liter (mg/1)"  means the milligrams of substance
                   per liter of solution, and is equivalent to parts  per million  in water
                   assuming unit density.
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Kentucky           (r) "Mixing zone"  means a domain of  a water body contiguous to a
  (con't)            treated or untreated wastewater discharge of quality characteristics
                   different from  those of the receiving water.  The  discharge  is in
                   transit and progressively diluted from the source to the receiving
                   system.   The mixing  zone  is the  domain  where wastewater  and
                   receiving water mix.

                   (s) "Natural temperature" means the temperature  that would exist in
                   waters of  the  Commonwealth without the  change  of  enthalpy of
                   artificial origin as opposed to climatic change or naturally occurring
                   seasonally variable temperature associated with riparian vegetation
                   and seasonal changes.

                   (t) "Natural water quality" means  those naturally occurring physical,
                   chemical, and biological properties of waters.

                   (u) "Non point" means any source of pollutants not defined by point
                   source as used in this regulation.

                   (v) "Outstanding  resource  waters" means  waters  designated  by the
                   department pursuant to 401 KAR 5:031, Section 8.

                   (w) "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, concen-
                   trated animal feeding operation, from which pollutants are or may be
                   discharged. This term  does not include return flows from  irrigated
                   agriculture.

                   (x) "Productive aquatic communities"  means  an assemblage of indi-
                   genous aquatic life capable of reproduction and growth.

                   (y) "Propagation"  means the continuance of species by successful
                   spawning, hatching, and development  or  natural  generation  in the
                   natural environment, as opposed  to the maintenance of species by
                   artificial culture and stocking.

                   (z) "Public water supply" means only surface water that with conven-
                   tional  treatment  will be suitable for  human consumption, culinary
                   purposes, or  in any food or  beverage  processing  industry and  meet
                   state and/or federal regulations  for  drinking water.   This  term
                   is synonymous with "domestic water supply."

                   (aa)  "Standard" is a numerical value,  range  of values,  or narrative
                   statement  promulgated by  the department to maintain and protect
                   the waters of the Commonwealth for designated uses.

                   (bb)  "Surface waters" means those waters having  well defined banks
                   and beds, either constantly or intermittently  flowing,  except effluent
                   ditches; impounded waters; and any subterranean waters flowing in
                   well defined  channels and having a clear hydrologic connection with
                   the surface.
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Kentucky
  (con't)
Louisiana
      17
Maine
         16
(cc) "Thermocline" means the plane in a body of water in which the
maximum rate of decrease in temperature occurs.

(dd) "Toxic substances" means substances which are bioaccumulative,
synergistic, antagonistic, teratogenic, mutagenic and interfere  with
the  normal propagation of  aquatic life,  wildlife, or  preclude  the
legitimate uses of any waters of the Commonwealth.

(ee) "Warmwater  aquatic  habitat"  means  any surface  water  and
associated substrate  capable of supporting indigenous warmwater
aquatic life.

(2)   Abbreviations used in water quality regulations:

(a)   °C means degreefe) Celsius?

(b)  EPA-SeeU. S. EPA;

(c)  °F means degreefe) Fahrenheit;

(d)  mg/1 means milligrams per liter (same as ppm);

(e)  NPDES means National Pollutant Discharge Elimination System;

(f)  pCi/1 means piocuries per liter;

(g)  ppm means  partfe)  per  million (assuming unit  density, same as
mgA);

(h)  ug/1 means micrograms per liter;

(i)  U.  S.  EPA  means  the  United States  Environmental  Protection
Agency.

Not specified

1.  Discharge.   "Discharge"  means  any spilling,  leaking,  pumping,
pouring, emptying, dumping, disposing  or  other  addition of  any
pollutant to waters of the State.

1-A. Coastal streams.  "Coastal streams" means those waters of the
State which  drain  directly or indirectly  into tidal  waters except
portions of streams subject to the rise and fall of the tide and those
waters listed and classified in sections 368 and 370.

2. Freshsurface waters. "Freshsurface waters" means all waters of the
State other than tidal waters.

3.   Municipality.  "Municipality  means  a city, town, plantation or
unorganized township.

4.  Person. "Person"  means an individual,  firm, corporation, munici-
pality, quasi-municipal cooperation,  state agency, federal  agency or
other legal entity.
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Maine
  (con't)
Maryland
         18
4-A.  Pollutant.  "Pollutant" means dredged spoil, solid waste, junk,
incinerator residue, sewage, refuse, effluent, garbage, sewage sludge,
munitions, chemicals, biological or radiological materials, oil, petro-
leum products or byproducts, heat, wrecked or discarded equipment,
rock, sand,  dirt and  industria,  municipal, domestic, commercial or
agricultural wastes of any kind.

4-B  Surface waste waster disposal system.  "Surface  waste water
disposal system" shall mean any system for disposal of waste waters
on the  surface of  the earth, including, but not limited to, holding
pondg, surface application and injection systems.

5. Tidal waters.  "Tidal waters" means those portions of the Atlantic
Ocean within the jurisdiction of the State, and all other waters of the
State subject  to the rise and  fall of the tide except those waters
listed and classified in sections  368 and 369.

6.  Transfer of ownership.  "Transfer of  ownership" means a sale, a
lease, a sale of over 50 percent of the stock of a coproration to one
legal entity or a  merger or consolidation where the surviving corpo-
ration is other than the original licensee.

7. Waters of the State.  "Waters of the State" means any and all the
surface  and subsurface  waters  which are  contained within,  flow
through, or  under or  border upon this State or any portion  thereof,
including the  marginal and  high seas,  except such  waters as are
confined and retained completely upon the property of  one person and
do not drain into or connect with any other waters of the State.

(1) "Administration" means the Water Resources Administration.

(2) "Administrative Order" means a written notification issued by the
Administration pursuant  to State Law and Regulations, requiring —
within a time specified — correction of a water pollution condition or
compliance with provisions of pertinent law and regulations.

(3) "Advanced waste  treatment" means the  treatment of  wastes or
wastewaters to  (a) reduce content of specific  consituents, such as
nitrogen and phosphorus,  which are not controlled sufficiently by Best
Practicable Control Technology Currently Available (BPCTCA) or by
secondary treatment, or to (b) reduce organic oxygen demand beyond
the level attainable by  BPCTCA or secondary treatment, so as to
comply with waste load allocations in water quality limited waters.

(4) "Affiliate" means  an  individual or corporation who is controlling,
controlled by, or under common control of the applicant.

<5)  "Aquifer" means  any formation  of  soil,  sand, rock,  gravel,
limestone, sandstone, or other material,  or  any  crevice from which
underground water is or may be produced.
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Maryland           (6) "Base flow" means the discharge  entering stream channels from
  (con't)            ground water or other delayed sources; i.e., stream flow periods not
                   affected by recent rainfall.

                   (7)  "Best  Practicable Control  Technology  Currently  Available"
                   (BPCTCA)  means a  feasible process  which, as demonstrated  by
                   general use,  demonstration process or pilot  plants represents good
                   engineering practice at  reasonable  cost at  the time  the  State
                   Discharge Permit is issued or thereafter modified or reissued.   For
                   discharges  from publicly  owned treatment works and other sewage
                   treatment facilities, BPCTCA means  the secondary treatment levels
                   specified by the Aministration in the state Discharge permits.

                   (8) "Bunkering" m ans the  process of fueling a vessel.

                   (9) "Coliform  organisms"  means  all of the aerobic and facultative
                   anaerobic,  Gram-negative,  non-spore-forming, rod-shaped  bacteria
                   that  ferment lactose broth with gas formation within 48 hours at 35
                   degrees C.

                   (10)  "Collecting agents" means  chemicals or  other  agents  that  can
                   gel,  congeal, herd, entrap,  fix or make an oil  mass more rigid or
                   viscous to facilitate its removal from the water surface.

                   (11) "Control" means  the  possession of the power  to direct  or  cause
                   the direction of the management policies of a person.

                   (12) "Department" means the Department of Natural Resources.

                   (13) "Design stream flow" means the  seven (7) consecutive days low-
                   flow which has a frequency of recurrence of once in ten (10) years.

                   (14) "Discharge" means the addition, introduction, leaking, spilling, or
                   emitting any pollutant to  waters of the State or the placing  of  any
                   pollutant in a location where it is likely to pollute.

                   (15) "Dispersants" means those chemical agents or compounds which
                   emulsify, disperse or solubilize oil or which act to further the surface
                   spreading of oil slicks in order to facilitate dispersal of oil.

                   (16) "Disposal  system" means a system for disposing of wastes, either
                   by surface or underground  methods,  and includes treatment  works,
                   disposal wells and other systems.

                   (17)  "Effluent" means the outflow  into the  waters  of  the  State of
                   waste, whether treated or untreated, from  an  industrial process,
                   holding tank, pond, sewer, or other point source.

                   (18)  "Effluent  limitations"  means  any  restrictions or  prohibitions
                   established under State or Federal  Law including but not limited to
                   parameters for toxic and nontoxic discharges, standards of perfor-
                   mance for new sources, or ocean discharge criteria.  The restrictions
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Maryland           or prohibitions  shall specify quantities, rates, and concentrations of
  (con't)           chemical, physical,  biological,  and other  constituents  which  are
                   discharged into State waters.

                   (19) "Effluent limited waters" means waters of the State which the
                   Administration has identified as  those  in  which  Best Practicable
                   Control Technology Currently Available for industrial discharges and
                   secondary treatment for sewage  discharges is sufficiently stringent
                   to maintain applicable water quality standards.

                   (20)  "Emergency conditions"  means those  circumstances resulting
                   from  a permittee's actions,  or lack of  actions, which the Admini-
                   stration determines constitute a  present or imminent  danger to the
                   public health, welfare or the environment.

                   (21)   "EPA"   means  the  United   States  Environmental  Protection
                   Agency, or its successor.

                   (22) "Estuary" means a semi-enclosed coatal body of water having a
                   free connection with the open sea and within which the sea-water is
                   measurably diluted with fresh water deriving from land drainage.

                   (23) "Eutrophication (Eutrophic)"  means the excessive enrichment of
                   waters of the State by the discharge or addition of nutrients which
                   results in degradation  of water  quality or  undesirable  ecological
                   changed  as indicated by excessive rooted or dispersed  plant  growth
                   (such as algal blooms), loss of water clarity, or nuisance  conditions.

                   (24) "Fecal coliform" means the portion of the coliform group which
                   is  present in  the  gut  or  the feces of  warm-blooded animals.  It
                   generally includes organisms which are capable of producing gas from
                   lactose broth in a suitable culture medium within  24  hours at 44.5
                   degrees plus 0.5 degrees C.

                   (25)  "Federal  Act"  means the Federal Water Pollution Control Act
                   Amendments of 1972, or amendments thereto.

                   (26)  "Federal  Water Pollution Control Act, as amended"  means the
                   Federal Water Pollution Control Act Amendments of 1972, or amend-
                   ments thereto (codified as Title 33, U.S.C.)

                   (27)  "Fish" means loweraquatic vertebrates which  have bony skele-
                   tons,  are covered  by  dermal scales,  usually  have spindle-shaped
                   bodies, and swim by fins and breathe by gills.

                   (28) "Industrial waste" means any liquid, gaseous,solid or other waste
                   substance or  combination thereof  resulting  from  any  process of
                   industry, manufacturing, trade or  business, or from  the development
                   of any natural resource, including agriculture.

                   (29) "Intermittent stream" means  a nontidal body of flowing water for
                   which the computed design stream flow is zero.
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Maryland           (30) "Material balance" means an inventory accounting system for
  (con't)            determining  quantities of  materials  on  hand,  used  in  process,
                   converted to product, lost to the environment, or contained in waste
                   matter generated, stored, discharged, or otherwise processed.

                   (31) "National Pollutant Discharge Elmination Sytem (NPDES)" means
                   the national system for the issuance of permits as designated by the
                   1972 amendments to the Federal Water Pollution Control Act.

                   (32) "NPDES application" means the uniform national forms (including
                   subsquent additions, revisions, or modifications duly promulgated by
                   the Environmental Protection Agency pursuant  to the Federal Water
                   Pollution Control Act, as  amended) for application  for an  NPDES
                   permit.

                   (33) "NPDES form"  means any issued NPDES permit and any uniform
                   national  form developed for use in the NPDES  and prescribed in
                   regulations  promulgated by  the Environmental  Protection  Agency
                   including the NPDES application and the NPDES report forms.

                   (34) "NPDES permit"  means the permit  issued  under the  Federal
                   Water Pollution Control Act, as amended.

                   (35)  "NPDES reporting form"  means the  uniform  national forms
                   (including subsequent  additions, revisions, or modifications duly
                   promulgated by the Environmental Protection Agency pursuant to the
                   Federal Water Pollution Control Act, as amended)  for reporting data
                   and information pursuant to  monitoring and other conditions of the
                   NPDES permit.

                   (36) "Natural" — or "naturally  occurring" values — means  for all of
                   the waters of the State:

                   (a)  those water  quality values which exist   unaffected  by — or
                   unaffected as a consequence of — any water use by any person:

                   (b)  those  water quality values  which  exist unaffected by  the  dis-
                   charge, or direct or indirect  deposit of, any solid, liquid or  gaseous
                   substance by any person; or

                   (c) any other water quality values which represent conditions which
                   the Administration  by its rules and regulations defines as natural.
                   For the purposes of this definition,  the following conditions shall be
                   considered  as natural; infestations  of water  milfoil,  Myriophyllum
                   spicatum; infestations  of water chestnut, Trapa natans; the presence
                   of sea  lettuce, Ulva  lactuaca; and  the  presence  of  sea  nettles,
                   Aurelia sp.

                   (37) "Natural trout waters"  means waters capable of suporting natural
                   trout  populations,  including propagation, and  their  associated food
                   organisms.
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Maryland           (38) "New source" means  any source, the construction of which is
  (con't)           commenced after  the publication of proposed regulations by the EPA
                   prescribing  a standard of performance which  will be  applicable to
                   such source if such standard is thereafter promulgated.

                   (39) "Onshore  facility"  means  any  installation  (including,  but  not
                   limited to terminals,  motor vehicle and rolling  stock)  of  any kind
                   located in, on, or under any land within the State.

                   (40) "Offshore facility" means any installation of any kind located in,
                   on, or under, any of the navigable waters within the State other than
                   a vessel.

                   (41) "Oil" means any of a number of unctuous combustible substances
                   which are liquid at ambient temperature and atmospheric pressure, or
                   easily liquefiable on warming and soluble in ether, and which include
                   fuel oil, gasoline, kerosene, lubricating oil, other petroleum products,
                   oil bearing sludge, oil refuse, oil  mixed with ballast  or bilge water,
                   and oil mixed with wastes.

                   (42) "operator" means  that person or those persons with responsibility
                   for the management and performance of each facility.

                   (43) "Other aquatic life" means all organisms, other than fish, which
                   grow in, live in, or frequent water.

                   (44) "Other waste" means  garbage,  refuse, wood, sawdust, shavings,
                   bark,  sand,  lime,  cinders, ashes, offal,  oil, tar,  dyestuffs,  acids,,
                   chemicals, and all discarded substances other than sewage  or  indus-
                   trial waste.

                   (45) "Permeability" (of an aquifier) means  the volume of water at the
                   prevailing kinematic viscosity that will move  in unit  time under a
                   unit hydraulic gradient through a unit area measured at right angle to
                   the direction of flow.

                   (46) "Permit"  means  written  authorization  issued by the  Admini-
                   stration pursuant  to  pertinent law and regulations  and  describing
                   required performance  for specific activities  and operations, including
                   —depending on context —  a  State  Discharge  Permit,  an  NPDES
                   Permit, an Oil Operations Permit, and others

                   (47) "Permittee" means the person  holding  a  permit issued by the
                   Administration.

                   (48) "Person" includes the State,  any county, municipal corporation,
                   or other political subdivision of the State,  or  any  of their units, or an
                   individual, receiver, trustee, guardian, executor,  administrator, fidu-
                   ciary,  or  representative  of any kind, or  any partnership, firm,
                   association, public or private corporation, or any other entity.
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Maryland           (49) "Person in charge" means the person designated by an operator or
  (con't)           permittee  as  the one  with  direct supervisory responsibility  for  an
                   activity or operation at a facility, such  as  the transfer of oil to or
                   from any facility.

                   (50) "Point of discharge" means that location in or adjacent to a body
                   of  water  at  which  any  liquid,  solid  or  gaseous substances  are
                   discharged or deposited.

                   (51) "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, or  vessel or other floating
                   craft,  from which pollutants are, or may be discharged.

                   (52) "Pollutant" means any wastes or  wastewaters discharged from
                   any publicly owned treatment works or industrial source and all other
                   liquid, gaseous, solid or  other substances which will  pollute  any
                   waters of this State.

                   (53) "Pollution" means every contamination or other alteration of the
                   physical,  chemical, or biological properties,  of  any waters  of  the
                   state,  including  change in temperature,  taste,  color,  turbidity,  or
                   odor of the waters, or the discharge or deposit of  any organic matter,
                   harmful  organism,  liquid,  gaseous,  solid,  radioactive,  or  other
                   substance  into any waters of  the state  as  will render the  waters
                   harmful, detrimental, or injurious to public health, safety, or welfare,
                   domestic,  commercial, industrial, agricultural,  recreational,  other
                   legitimate beneficial uses, or livestock,  wild animals, birds,  fish or
                   other aquatic life.

                   (54) "Propagation" means the continuance  of species by generation of
                   successive production in the natural environment, as opposed to  the
                   maintenance of species by  artificial culture and stocking.

                   (55) "Publicly  owned treatment works" means any  facility  for  the
                   treatment of pollutants owned by the State  or any political sub-
                   division thereof, municipality, or other public entity.

                   (56) "Receiving water" means surface waters of the State into which
                   wastes or wastewaters are, or may  be, discharged.

                   (57) "Recreational trout waters" means cold or warm waters capable
                   of holding or supporting adult  trout for put-and-take fishing, usually
                   seasonal.

                   (58) "Refuse  Act" means Section 13 of the River and Harbor  Act of
                   March 3, 1899.

                   (59) "Refuse  Act application"  means  the application for a  permit
                   under the Refuse Act.

                   (60) "Refuse  Act permit"  means any permit issued under the Refuse
                   Act.

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Maryland           (61)  "Schedule  of  Compliance"  means  a  schedule  of  remedial
  (con't)           measures including an enforceable sequence of actions  or operations
                   leading to  compliance with the effluent limitations or  water quality
                   standard as specified by  an  order or  permit  requirement  of the
                   Administration.

                   (62) "Second  treatment" means the treatment of sewage or product
                   effluent equal to or better  than the following quality:

                   a. Five day biochemical oxygen demand:

                     30 mg/1 - average for a 30 day period
                     45 mg/1 - average for a 7 day period

                   b. Total suspended solids

                     30 mg/1 - average for a 30 day period
                     45 mg/1 - average for a 7 day period

                   c. Bacterial Control:

                     As required to meet water quality standards

                   d. Total Chlorine residual:

                     0.5 mg/1 -  instantaneous maximum;  lower values may be  set to
                   protect aquatic life.

                   (63) "Sewage" means the water-carried human waste from residences,
                   buildings, industrial establishments or other places;.

                   (64)  "Shellfish harvesting  waters" means  waters that  are actual or
                   potential areas  for  the  harvesting  of  shellfish including  oysters,
                   softshell clams, and brackish water clams.

                   (65) "Sinking  agents" means those chemicals or other agents that can
                   physically sink oil below the water surface.

                   (66) "Slop"  means a mixture of oil, water and sediment.

                   (67) "Sludge" means the settleable solids that are naturally present in
                   waters  and  wastewaters,  or  that are  derived  from  nonsettleable
                   matter by  chemical  coagulation  and precipitation and by biological
                   flocculation and precipitation.

                   (68)  "Sorbent" means any  substance  that  takes  up and holds  oil by
                   either adsorption or absorption.

                   (69)  "Source" means  any building, structure,  facility, or installation
                   from which there is, or may be, a discharge of pollutants.

                   (70)  "Spill  (spilling)"  means any loss of control  or release of oil or
                   other hazardous substance, such that moves or is capable of moving
                   into the aquatic environment.
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Maryland           (71) "Standard of performance"  means a standard for the control of
  (con't)            the discharge of pollutants which reflects the greatest degree  of
                   effluent  reduction  achievable   through  application of  the  best
                   available  demonstrated  control  technology,  processes,  operating
                   methods, or other alternatives as such are established by the State or
                   the EPA.

                   (72) "State" m ans the State of Maryland.

                   (73) "State  Discharge Permit" means a permit to discharge pollutants
                   into waters of the State, issued by the Administration pursuant to
                   Section 8-1413 of the Natural Resources Article, Annotated Code of
                   Maryland  (1974 Volume) and  Section  402 of the  Federal  Water
                   Pollution Control Act Amendments of 1972, or amendments thereto.

                   (74) "Stream flow" means the nontidal water movement that occurs in
                   a natural channel.

                   (75) "Subbasin" means one of the nineteen watershed areas delineated
                   by the Maryland Department of Natural Resources, and comprising,
                   in sum total, the surface waters of the State.

                   (76) "Thermal barrier" means a pattern of artificially  created tempe-
                   rature change and distribution.

                   (77) "Toxic materials" means any liquid, gaseous, or solid substance or
                   substances  in such concentration which, when applied to, discharged
                   to, or  deposited in the waters of the State, may exert a poisonous
                   effect detrimental to man  or  to the propagation, cultivation  or
                   conservation of animals, fish, or other aquatic life.

                   (78) "Tramsmissivity" (of an aquifer) means  the rate at which water
                   of the prevailing kinematic viscosity is transmitted  through  a unit
                   width of the aquifer under a unit hydraulic gradient.

                   (79) "Transport" means a  tractor-trailer vehicular  unit, usually  at
                   5,000 gallons capacity or greater.

                   (80) "Treatment  works" means any plant or other works  used for the
                   purpose of treating or stabilizing wastes.

                   (81) "Truck  tank" means a self-contained vehicular unit (meaning the
                   automotive  power and the hauling capacity  are contained in one
                   complete package).  A truck tank my be of any capacity  up  to the
                   road limitation on axle weights, approximately 3,200  gallons on two
                   axles.

                   (82) "Underground waters (Groundwater)"  means water below the
                   surface of the ground.

                   (83) "Vessel" means every watercraft or other  artificial contrivance
                   used or capable of being used,  as means  of  transportation on the
                   waters of the State.
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Maryland
  (con't)
Massachusetts
              19
(84) "Waste load allocation" means  the identification and allotment
by the  Administration,  as necessary  to achieve  compliance  with
Water Quality Standards, of quantities  of residual wastes  which may
be discharged  from  point  sources.   This  allotment  shall  include
consideration  of seasonal variations, a  margin  of  safety, and the
contribution to non-point sources.

(85) "Wastes"  means  industrial  wastes  and all other liquid, gaseous,
solid or other substances which will pollute any waters of the State.

(86) "Wastewaters" means any  liquid waste substance derived  from
industrial,  commercial, municipal, residential, agricultural,  recrea-
tional  or other operations  or establishments, and any other  liquid
waste  substance containing liquid,  gaseous,  or  solid  matters and
having characteristics which will pollute any waters of the State.

(87) "Water class unit" means a distinct  portion of  a subbasin.

(88) "Water quality limited waters"  means shellfish waters and other
waters  of the State for which  Best  Practicable Control Technology
Currently  Available  for  industrial  discharges and secondary treat-
ment for sewage discharges is not sufficiently stringent to maintain
applicable water quality standards.

(89) "Watercourse"  means a specific body or channel of water  which
is part of the waters of the State.

(90) "Waters" means the liquid substance  which  is derived from* a
ground  water source, or a surface source, or a piped supply - or any
combination thereof  -  which  will be discharged,  without  change in
quality,  into the waters  of the State,  with the  exception of  storm
water runoff.

(91)  "Waters  of the State" includes both  surface and underground
waters  within the boundaries  of the State subject to its jurisdiction,
including that portion of the Atlantic Ocean within the boundaries; of
the State, the  Chesapeake Bay and its tributaries, and  all ponds,
lakes, rivers, streams, public ditches, tax ditches, and public drainage
systems within  the State,  other  than  those  designed and  used to
collect, convey  or dispose of sanitary sewage.   The flood plain of
free-flowing waters determined by  the Department on the basis of
the 100-year flood frequency is  included as waters of the State.

Artificial conditions - Those conditions resulting  from  human altera-
tion of  the chemical, physical or biological integrity of waters.

Beneficial  use  - Any  use not impairing  the   most  sensitive use
designated in the classification tables  contained in Part' 5;  except
that in no case shall the assimilation or transport of  pollutants be
deemed a beneficial use.

Cold water fishery - Waters whose  quality is  capable of sustaining a
year-round population of cold water trout (salmonidae).
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Massachusetts
  (con't)
Michigan
        20
Division - The Massachusetts Division of Water Pollution Control, as
established by General Laws c 21,1 26.

Discharge -  Any  addition  of  any pollutant  to the waters  of the
Commonwealth.

EPA - The United States Environmental Protection Agency

Federal Act - The Federal Water Pollution Control Act,  as amended,
33 U.S.C.111251, et seq.

Massachusetts  Act  -  The  Massachusetts Clean  Waters  Act,  as
amended,  General Laws, c 21,1126-53, inclusive

Pollutant - An element or property of sewage, agricultural, industrial
or commercial waste,  runoff,  leachate,  heated  effluent,  or other
matter, in whatever form and whether originating at a point or major
nonpoint source, which is or may be discharged, drained or otherwise
introduced into any sewerage system, treatment works or waters of
the Commonwealth.

Primary contact recreation - Any recreation or other water use, such
as swimming and water skiing,  in  which there  is prolonged  and
intimate contact  with  the  water sufficient to  constitute  a health
hazard.

Seasonal cold water  fishery - Waters whose  quality is capable of
sustaining only an extremely limited cold water population on a year-
round basis, with  cold-water fish  in these streams provided largely by
stocking.

Secondary contact recreation - Any recreation or other  water use in
which contact with the water is either incidental or accidental, such
as  fishing,   boating  and  limited  contact  incident  to  shoreline
activities.

Segment - A finite  portion of  a water body established  by the
Division for the purpose of classification.

Warm  water  fishery  - Waters  whose quality is not  capable  of
sustaining a year-round cold water or seasonal cold water fishery.

Waters of the Commonwealth - All waters within the jurisdiction of
the Commonwealth, including, without limitation, rivers,  streams,
lakes, ponds, springs,  impoundments,  estuaries and  coastal waters,
but not including groundwaters.

R 323.1043. Definitions  A to N.
Rule 1043. As used in this part.

(a) "agricultural  water use" means a use of  water for agricultural
purposes,  including but not  limited to livestock  watering, irrigation
and crop spraying.
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Michigan           (b)  "Application factor means a numerical factor applied to the TL  ,
  (con't)            or concentration producing other effect  end points to provide the
                   concentration of  a toxic substance that  would be  safe for test
                   organisms in the waters of the state.

                   (c)  "Best practicable waste treatment technology for control of total
                   phosphorus?1 means  chemical-physical or chemical-physical-biological
                   treatment processes, including but not limited to treatment with
                   aluminum salts, iron salts, or  lime in  conjunction with appropriate
                   coagulant chemicals, settling or filtration or both, with operation and
                   management of the treatment facilities and the process to achieve
                   optimum phosphorus removal rates, or equivalent treatment.

                   (d)   "Anadromous salmonids" means those trout and salmon which
                   ascend streams to spawn.

                   (e)  "Coldwater fish" m ans those fishspecies whose populations thrive
                   in relatively cold water, including but  not limited to trout, salmon,
                   whitefish, and Cisco.

                   (f)  "Connecting waterways" means the St. Marys river, Keweenaw
                   waterway, Detroit river, St. Glair river and lake St. Clair.

                   (g)   "Designated use" means  a  use of the waters  of the state as
                   established by  these rules, including but  not  limited to  industrial,
                   agricultural and public  water  supply;  recreation;  fish,  and other
                   aquatic life and wildlife; and navigation.

                   (h)   "Dissolved oxygen"  means the amount of oxygen  dissolved in
                   water, commonly expressed as a concentration in terms of milligrams
                   per liter.

                   (i)  "Dissolved solids" means the  amount of materials dissolved in
                   water commonly expressed as a concentration in terms of milligrams
                   per liter.

                   (j)  "Effluent" means a wastewater discharged from a point source to
                   the waters of the state.

                   (k)  "Fecal coliform" means a type of coliform  bacteria found in the
                   intestinal tract of humans and other warm-blooded animals.

                   (1)  "Fish, other aquatic life, and wildlife use"  means the use of the
                   waters  of the  state by fish, other aquatic life and wildlife for any
                   life history stage or activity.

                   (m)  "Industrial water supply" means a water source not protected for
                   public  water supply and intended for use in commercial or industrial
                   applications and non-contact food processing.

                   (n)  "Mixing zone"  means  a region of a water body which  receives a
                   wastewater discharge of a  different  quality  than  the  receiving
                   waters, and within  which the water quality standards as prescribed by
                   these rules do not apply.


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Michigan           (o)  "Natural water temperature" means the temperature of a body of
  (con't)            water without an influence from an artificial source, or a tempera-
                   ture as otherwise determined by the Commission.

                   R 323.1044. Definitions P to W
                   Rule 1044. As used in this part.

                   (a)  "Palatability" means the state of being agreeable or acceptable
                   to the senses of sight, taste, or smell.

                   (b)   "Plant nutrients1'  means those chemicals,  including but  not
                   limited to nitrogen  and phosphorus, necessary for  the growth  and
                   reproduction of  aquatic rooted, attached, and floating  plants, fungi,
                   or bacteria.

                   (c)   "Point source"  means  a  discernible,  confined,  and  discrete
                   conveyance from which wastewater is or may be discharged to  the
                   waters  of the state, including but not  limited  to, a pipe, ditch,
                   channel, tunnel, conduit,  well,  discrete fissure, container, concen-
                   trated animal feeding operation or vessel or other floating craft.

                   (d)  "Public water supply" means a surface raw water source which,
                   after conventional treatment,  will provide a safe, clear, potable,  and
                   aesthetically pleasing  water  for  uses  which include, but are  not
                   limited to human consumption, food processing and cooking, and as a
                   liquid ingredient in foods and beverages.

                   (e)   "Raw  water" means  the waters of  the state  prior to  any
                   treatment.

                   (f)  "Receiving waters"  means the waters of the state into which an
                   effluent is, or may be discharged.

                   (g)  "Sanitary sewage" means treated or untreated wastewaters which
                   contain human metabolic and domestic wastes.

                   (h)   "Standard"  means  a  definite numerical value  OF  narrative
                   statement  promulgated  by the commission to enhance or  maintain
                   water quality to  provide for,  and fully protect, a designated use of
                   the waters of the state.

                   (i)  "Suspended solids" means  the amount of material suspended in
                   water,  commonly expressed as a concentration in terms  of milligrams
                   per liter.

                   (j)  "TL  " means median tolerance limit  which is the concentration
                   of a tesimaterial in a suitable diluent at which 50% of the exposed
                   organisms survive for a specified period of exposure.

                   (k)  "Total body contact recreation"  means  an  activity where  the
                   human  body may come into direct contact with water to the point of
                   complete  submergence,  including, but not limited to, activities such
                   as swimming, water skiing, and skin diving.
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Michigan
  (con't)
Minnesota
         21
Mississippi
         .22
Missouri
       .D
jfl)  "Toxic substances"  means substances of unnatural origin, except
heat, in concentrations or combinations which are or may become
harmful to plant or animal life.

(m)  "Warmwater fish" means those fish species whose  populations
thrive  in relatively warm water,  including but not limited to, bass,
pike, walleye, and panfish.

(n)  "Wastewater" means liquid  waste  resulting from commercial,
municipal,  and   domestic   operations   and  industrial   processes,
including but not limited  to, cooling and condensing waters, sanitary
sewage, and industrial waste.

(o)  "Waters  of  the state" means  the  Great Lakes, their connecting
waterways, all  inland  lakes, rivers,  streams,  impoundments, open
drains,  and other surface watercourses  within the confines  of the
state,  except drainage  ways  and  ponds  used solely for  waste water
conveyance, treatment, or control.

The terms "waters of the state"  for the purposes of  this regulation
shall be construed to mean intrastate waters as herein below defined,
and the  terms "sewage",  "industrial waters," and  "other wastes."   as
well as any other terms for which definitions are  given in the Water
Pollution Control Statutes, as used herein have the meanings ascribed
to them in Minnesota Statues, Sections  115.01  and 115.41, with the
exception that disposal systems or  treatment works operated under
permit  of the Agency  shall not  be construed to be "waters  of the
state"  as the term is used herein.  Interstate waters are defined as all
rivers, lakes, and other  waters that flow across or form part of state
boundaries.   All  of  the  remaining designated waters of  the state
which do not meet the definition of interstate waters given above are
to be construed herein as  constituting intrastate waters.  Other terms
and abbreviations used  herein which are not specifically defined  in
applicable federal or state  law  shall be construed in conformance
with the context,  and  in relation to  the applicable section  of the
statutes pertaining  to  the matter at  hand,  and current professional
usage.

Not specified

(A) Waters of the State: All rivers, streams, lakes  and other bodies  of
surface and subsurface water lying within or forming a  part  of the
boundaries of the state which are not entirely confined  and located
completely upon lands  owned, leased or otherwise controlled by  a
single  person or  by two or  more  persons  jointly  or as  tenants  in
common  and  includes water  of the United States lying within the
state.

(B) Stream-flow classification

  1. Class P:  Streams that maintain permanent flow even in drought
periods.
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Missouri             2. Class PI: Standing-water reaches of Class P streams, including
  (con't)            impoundments.

                    3. Class  C:  Streams  that  may cause  flow in dry periods, but
                   maintain permanent pools which support aquatic life.

                   (C)  Water  quality   criteria:  Chemical,  physical,  and  biological
                   properties of  water  that are necessary  to protect  beneficial water
                   uses.

                   (D) Beneficial water uses:

                    1. Irrigation: Application of water to cropland or directly to plants
                   that may be  used for human or livestock consumption.  Occassional
                   supplemental irrigation, rather than continuous  irrigation, is assumed.

                    2. Livestock watering and wildlife watering (LW,WW): Maintenance
                   of conditions to support health in livestock  and wildlife.

                    3. Protection of warm-water aquatic life: Maintenance of conditions
                   to  sustain  warm-water fish and  other warm-water  aquatic life,
                   including critical stages of reproduction and early life. It will include
                   warm-water sport fishing.

                    4. Coldwater sport  fishery  (CWSF): Maintenance  of conditions to
                   support the propagation or stocking of trout.

                    5. Whole-body contact recreation (WBCR): Activities in which there
                   is  direct human contact with the  raw surface  water to the  point of
                   complete body  submergence.    The raw  water may be  ingested
                   accidentally and certain sensitive body organs, such as the eyes, ears,
                   and the nose,  will be  exposed to the water.  Although the water may
                   be ingested  accidentally, it is  not intended  to be used as a  potable
                   supply unless acceptable treatment is applied.  Water so designated is
                   intended to be used for swimming,  water skiing  or skin diving.

                    6. Drinking water supply (DWS): Maintenance  of a raw water supply
                   which will yield potable water by common treatment processes.

                    7. Industrial process water and  industrial cooling  water: Water to
                   support  various industrial  uses;  since  quality needs will vary  by
                   industry, no specific criteria are set in these standards.

                    8. Commercial Fishery: Aquatic life  criteria and  Food and Drug
                   Administration limits for fish consumption are applicable.

                    9. Boating and canoeing: Activities in which very little contact with
                   water is assumed.

                   (E) Outstanding national resource waters:  Waters  which have out-
                   standing recreation and ecological significance.  These waters shall
                   receive special protection against  any degradation in quality.  Rivers
                   of the  Ozark National Scenic Riverways  and the  Wild and Scenic
                   Rivers systems are so designated.
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Missouri
  (con't)
Montana
        23
(F)  Epilimnion: Zone of atmospheric mixing in a thermostratified
lake.

(G) Hypolimnion:  Zone beneath the zone of atmospheric mixing in a
ther mo stratified lake.-

(H) Aquifer: A  subsurface  water-bearing  bed or stratum of sand,
gravel or bedrock which stores or transmits water  in recoverable
quantities.

(I) Losing stream: A  stream  which distributes 30% or more of its flow
through natural processes, such as through permeable subsoil and/or
cavernous bedrock, into groundwater.

(J) Fecal coliform bacteria:  A group of bacteria present in intestines.
of warm-blooded animals which  indicates the possible presence of
pathogenic organisms.

(K) Un-ionized ammonia: The toxic form of ammonia; higher pH and
higher temperature will cause a larger percentage to  exist in the un-
ionized form.

(L)  96-Hour LC^ (TLm): Concentration of  a toxicant which would be
expected to kill 50%  of the individuals of the test  species in 96 hours.

(M) Regulated-flow streams: A stream that derives a  majority of its
flow from a flow-regulating  structure.

(N) Mixing zone: An area of  initial  dilution  of  effluent  in  the
receiving water.

(O) Zone of passage: A continuous  water route of the volume, area
and quality necessary to  allow passage of free-swimming and drifting
organisms with no significant effects produced on  their populations.

(P) 7-day,  once-in-ten-year  low  flow (7-day,  Q10):  The  average
minimum  flow  for  seven consecutive  days  that has  a recurrence
interval of once in ten years.

Unless statutory  definition  or the context otherwise  requires in this
rule:

"Conduit" means any artificial or natural duct, either open or closed,
for conveying liquids or other fluids.

"Dewatered stream"  means  a perennial or intermittent stream  whose
water has been removed for  one or more beneficial uses.

"EPA" means the U.  S. Environmental Protection Agency.

"Intermittent stream" means  a  stream or portion of a stream that
flows only in direct response to precipitation; it receives little or no
water from springs and no  long-continued supply from melting snow
or other sources.
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Montana
  (con't)
"Naturally occurring" means conditions or  material  present from
runoff or  percolation  over which man  has no control or from
developed land where all reasonable land, soil and water conservation
practices have  been applied.   Conditions resulting  from dams  in
existence as of July 1, 1971 are natural.

"Mixing  zone"  means  that volume  of state  water  wherein any
pollutant may exceed allowable water quality standards.

"Pesticide" means insecticides, herbicides, rodenticides,  fungicides  or
any  substance or mixture of substances  intended  for preventing,
destroying,  controlling, repelling,  altering life  processes, or miti-
gating any insects, rodents, nematodes, fungi, weeds and other forms
of plant or animal life.

"Residue" means oils, floating solids and sludge deposits.

"Sediment" means solid material settled from suspension in a liquid;
mineral  or organic solid  material that  is being transported  or has
been moved from its site of origin by air, water or ice and has come
to rest on the earth's surface, either above  or  below  sea level;  or
inorganic or organic particles originating from weathering, chemical
precipitation or biological activity.

"Settleable solids" means inorganic or organic particles that are being
transported or have been transported by  water from the site or sites
of origin and are settled or are  capable of  being settled from
suspension.

"Sewer"  means a pipe or conduit  that carries wastewater or drainage
water.

"State waters"  means  any body  of water,  irrigation  system  or
drainage system, either surface  or underground.  This  section shall
not apply to irrigation  waters where the  waters are used up  within
the irrigation system and said waters  are not  returned  to any other
state waters.   The term "state waters"  as used in this rule does not
include underground waters.

"Storm  sewer" or "storm  drain" means  a sewer that carries storm
water  and surface  water, street wash  and other wash  waters,  or
drainage but excludes sewage and industrial wastes.

"True color" means the color of  water from which the  turbidity has
been removed.
Nebraska
         24
"Turbidity" means a condition in water or wastewater caused by the
presence  of suspended  matter  resulting  in  the  scattering  and
absorption of light rays.

Not specified
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       25
Nevada            "Act" means the Federal Water Pollution Control Act Amendments of
                   1972 (33 U.S.C. 1251, et. seq)

                   "Administrator"  means the administrator of the U.S. Environmental
                   Detection Agency.

                   "Aquatic Animal Production Facility" means a hatchery, fish farm or
                   other facility which contains, grows, or holds:

                      Fish or other aquatic animals in ponds, raceways, or other similar
                   structures for  purposes of  production and from  which there  is a
                   discharge on any 30  days or more per  yer>r, but does not include:

                      Closed ponds which discharge only during periods of excess runoff,
                   or

                      Facilities  which  produce less than  20,000 pounds  of aquatic
                   animals per year;

                      Any species of fish or other animal life (other than carp (Cyprinum
                   carpio), goldfish (Carassius  auratus), or brown trout (Salmo trutta)
                   nonnative  to the United States as defined in "Special Publication No.
                   6" of the American Fisheries Society entitled, "A List of Common
                   and Scientific Names of Fishes from  the U. S. and Canada", and from
                   which there is a discharge  at any time.

                   "Commission" means the state environmental commission.

                   "Complete  treatment" means that  degree of treatment which is
                   required to continuously produce water which  meets State Board of
                   Health drinking water standards.

                   "Conventional treatment"  means processes  such as coagulation, sedi-
                   mentation, filtration,  and disinfection;  however, it does not include
                   desalting techniques.

                   "Department  means the  Department  of  Conservation  and Natural
                   Resources.

                   "Director" means the Director of the Department or his designee.

                   "Discharge" means any addition of a pollutant or pollutants to water.

                   "Disinfection"  means   the destruction  or  inactivation  of  disease-
                   producing organisms.

                   "Division"  means the  division of environmental  protection of the
                   Department of Conservation and Natural Resources.

                   "Effluent  limitation"  means any applicable  state  or federal water
                   quality  standard or limitation,  which imposes  any restriction or
                   prohibition on  quantities,  rates  or  concentrations  of chemical,
                   physical, biological, and other constituents which are discharged  from
                   point sources into any waters of the state.


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Nevada            "Filtration"   means   a   physical-chemical  process  for  removing
  (con't)            suspended and colloidal  impurities from water  by passage through  a
                   porous medium  by the  following  mechanisms:  absorption,  floccu-
                   lation, sedimentation, and straining.

                   "Individual sewage disposal  system"  means  a  system  of  sewage
                   treatment  tanks or  tank  and  effluent absorption  or percolation
                   facilities serving a single-dwelling or structure.

                   "Industrial  wastes" means wastes  resulting from  any process of
                   industry, manufacturing, trade or business, or from the development
                   or recovery of any natural resources.

                   "Interstate agency" means any agency of two or  more states:

                     Established by or pursuant to an agreement or compact approved by
                   the Congress of the United States or;

                     Having susbstantial powers or duties  pertaining to the control of
                   pollution of waters.

                   "Law" means NRS 445.131 to NRS 445.354, inclusive.

                   "Minor discharge"  means any discharge which (1) has a  total volume
                   of less than 50,000 gallons on every day of the year,  (2) does  not
                   affect the waters of any other state, and (3) is not identified by  the
                   director, the regional administrator, or by the  administrator as  a
                   discharge which  is not a minor discharge.  If there is more than  one
                   discharge from a facility and the sum of the volumes of all discharges
                   from the facility exceed 50,000 gallons on any  day  of the year, then
                   no discharge from the facility is a minor discharge as defined herein.

                   "Municipality" means

                     Any city, town,  county, district,  association, or other public body
                   created by or pursuant to the  law of this state,  which has jurisdiction
                   over disposal of sewage, industrial wastes or other wastes; or

                     An Indian tribe or an authorized Indian tribal organization.

                   "NPDES"  means  the  National  Pollutant  Discharge   Elimination
                   System,  which  is  the national system for the issuance  of  permits
                   under Section 402 of the Act.

                   "Natural waters"  means waters which  have not been  degraded or
                   enhanced by actions attributable to man.

                   "New  source"  means  any source,  the construction  of  which is
                   commenced after the  publication of proposed regulations prescribing
                   a standard of performance under Section 306 of the  Act  which will be
                   applicable to  such source, if such standard is thereafter promulgated
                   in accordance with Section 306 of the Act.
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Nevada            "Origin" means all waters tributary to those waters being classified
  (con't)           and  are considered  a part of  the  waters  being classified unless
                   otherwise designated.

                   "Permit" means a written authorization  to discharge pollutants into
                   the waters of the stae in accordance with the Act, the law, and the
                   regulations promulgated thereunder.

                   "Person" means:

                     The state  or  any agency or  institution  thereof,  any individual,
                   partnership,  firm, private  corporation,  trust,  estate,  commission,
                   board, public or private institution, utility, cooperative,  municipality
                   or other political subdivision of this state, any interstate body or any
                   other legal entity.

                     Includes the United States, to the extent authorized by  federal law.

                   "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,  or  vessel or  other floating
                   craft, from which pollutants are or may be discharged.

                   "Pollutant" means:

                     Dredged spoil, solid waste,  incinerator residue, sewage, garbage,
                   sewage sludge, munitions, chemical wastes, biological  materials, and
                   radioactive  materials, heat, wrecked or discarded equipment, rock,
                   sand,  cellar  dirt, and industrial, municipal,  and  agricultural waste
                   discharge into water:

                     Does not mean 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  or gas production and disposed of in a well, if the
                   well is used either for facilitating production or for disposal purposes
                   and if the Department determines  that such injection or  disposal will
                   not result in the degradation of ground or surface water resources.

                   "Pollution" means  the man-made  or  man-induced alteration of the
                   chemical, physical, biological, and radiological integrity of water.

                   "Pretreatment standards"  means  the  standards promulgated  under
                   Section 307(b) of the Act.

                   "Refuse Act application" means the application for a permit under
                   Section 13 of the Rivers and Harbors Act of March 3, 1899.

                   "Regional Administrator" means the Regional Administrator of the
                   United States Environmental Protection Agency, Region IX.
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Nevada            "Sewage"  means  the  water-carried  human  or animal  waste  from
  (con't)            residences, building,  industrial  establishments, feedlots,  or other
                   places, together with such groundwater infiltration and surface water
                   as may be  present.   The mixture of sewage with wastes and/or
                   industrial  wastes  shall also be considered sewage within the  meaning
                   of these regulations.

                   "Source" m ans any building, structure, facility, or installation from
                   which there is or  may be the discharge of pollutants.

                   "Standard of performance" means a standard for the control of the
                   discharge  of pollutants which reflects the greatest degree of effluent
                   reduction  which  the  Administrator  determines  to be achievable
                   through application of the best available demonstrated  control tech-
                   nology,   processes,  operating   methods,  or  other  alternatives,
                   including, where  practicable, a standard permitting no discharge of
                   pollutants.

                   "Toxic materials" means any material appearing on the list developed
                   by the Administrator pursuant to Section 307(a) of the Act.

                   "Treatment or waste treatment" means the stabilization or alteration
                   of the quality of waste  waters by physical, biological, or  chemical
                   means, or a combination thereof,  for  the  purpose of reducing or
                   eliminating adverse  effects on water quality, such that  the tendency
                   of said  wastes to cause  any degradation in water  quality or other
                   environmental conditions is reduced or eliminated.

                   "Treatment works" means:

                     Any devices and systems used in the storage, treatment, recycling,
                   and reclamation of municipal sewage or industrial wastes of a liquid
                   nature,   including   intercepting  sewers,  outfall   sewers,  sewage
                   collection systems, pumping, power and other equipment, and their
                   appurtenances:

                     Extensions, improvements, remodeling, additions, and alterations of
                   any device or system mentioned above

                     Units essential  to provide a reliable recycled supply such as standby
                   treatment units and  clear well facilities;

                     Any works,  including site acquisition of the  land that will be an
                   integral part of the treatment process or is used for ultimate disposal
                   of residues resulting from such treatment; and

                     Any other  method or system  for preventing, abating, reducing,
                   storing,  treating,  separating  or   disposing  of  municipal  waste,
                   including storm water runoff, industrial waste or waste in combined
                   storm water and sanitary sewer systems.
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Nevada            "Water quality standard or limitations" means  any applicable state
  (con't)            or federal water  quality standards  or  limitations, including but not
                   limited  to  water quality  criteria,  water use classifications, imple-
                   mentation plans  and  compliance schedules,  effluent  standards  and
                   limitations, prohibitions, standards of performance and pretreatment
                   methods.

                   "Waters of the state"  means all water situated wholly or partly within
                   or bordering upon the  state, including but not limited to:

                     All streams,  lakes, ponds, impounding reservoirs, marshes, water
                   courses, waterways, wells, springs,  irrigation systems, and drainage
                   systems, and

                     All bodies  or accumulations of  water, surface and underground,
                   natural or artificial.

                   "Zone of mixing" means the volume of water near the  point of waste
                   discharge  within which  the  water  immediately  mixes  with  the
                   receiving water due to the momentum  of the waste discharge and the
                   difference in density between the waste and the receiving water.

                   "Zone of passage" means a continuous water route of the  volume,
                   cross-sectional area, and quality necessary to allow  passage  of free-
                   swimming  and/or drifting organisms  with  no  significant  effect
                   produced on the aquatic population.
              9fi
New Hampshire     Antidegradation Policy:  A policy  which protects the current  high
                   water quality use even though the water may  be  classified for  a
                   lesser use.  For example,  a water body currently meeting the stan-
                   dards and used for swimming purposes cannot be degraded to a lesser
                   use even if classified "C"

                   Coliform Organisms:  Any of a number of  organisms whose presence
                   in water is  a possible indication of potentially  dangerous  bacterial
                   contamination emanating from human and animal wastes.

                   Disinfection: the killing of the larger portion (but not necessarily all)
                   of the harmful and objectionable microorganisms, in or on, a medium
                   by means  of chemicals, heat,  ultraviolet light,  etc. Chlorination is
                   the method  commonly employed in water  and sewage  treatment
                   processes.

                   Dissolved  Oxygen (DO): The oxygen dissolved  as  a gas  in sewage,
                   water or other liquid  usually expressed in milligrams per liter (mg/1),
                   parts per  million (ppm) or percent saturation.,   Adequate  dissolved
                   oxygen  levels are necessary in  waters to protect fish  and other
                   aquatic life and  to prevent offensive  odors.  Low dissolved oxygen
                   concentrations  are generally  due  to  excessive  organic  solids  dis-
                   charged as  a result of inadequately treated waste (having high BOD);
                   excessive  algal  growths   may cause   vastly fluctuating  dissolved
                   oxygen levels.  Other factors such as  temperature and water move-
                   ment also have an impact on dissolved oxygen levels.
                                        -52-

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New Hampshire
  (con't)
New Jersey
           27
pH:  The index of hydrogen ion activity, used as an  indication of
acidity or alkalinity in water. The pH of most waters ranges from 6.5
to 8.5,  and most  uses  of  water, such as aquatic life propagation,
prosper  at these levels.

Pollutant:  Any introduced  gas, solid or liquid matter which renders a
resource unfit for a specific use.

Surface Waters of the State:  Streams, lakes, ponds and tidal waters
within the jurisdiction of the State,  including all streams, lakes or
ponds bordering on  the State,  marshes,  water courses and other
bodies of water, natural or  artificial.

Sewage: The  water-carried waste products from buildings,  public or
private,  together  with  such ground  water infiltration and surface
water as may be present.

Temperature:   A measure  of heat  content.   Extreme  temperatures
primarily affect the aquatic life use of waters.  While temperature is
affected by natural  conditions, man  has a significant effect by the
construction  and  operation of  dams and the discharge  of cooling
waters from industrial processes, particularly power generation.

Toxic Materials: Poisonous compounds which kill, injure or impair an
organism  usually  through   chemical  actions.   Examples  of toxic
materials are pesticides and many heavy metals.

Warm- and Cold-Water  Fish: Warm-water fish include bass, sunfish,
cat-fish, suckers,  etc:   cold water fish  include salmon  and trout,
whitefish, smelts, shad,  etc.

Waste: Unused, unwanted, or otherwise rejected matter.

The  following  words  and  terms shall have  the following meanings
unless the context  clearly indicates otherwise.

Agricultural Water Supply - Water used for livestock or irrigation.

Ambient Temperature — The temperature of a water body unaffected
by the localized heated waste discharge or discharge complex.

Anadromous Fish — Fish that spend a part of their lives in the sea or
lakes, but ascend rivers  to spawn.

Aquatic  Substrata  —  Soil material and attached biota underlying the
water.

Biota — The  animal  and  plant life  of the  region; flora and fauna
collectively

Department — New Jersey  Department of Environmental Protection.
                                        -53-

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New Jersey         Epilimnion —  The upper warm region of a stratified body of water
  (con't)            which  is  freely circulating  and extends from the  surface  to the
                   thermocline   and  does   not  have   a   permanent   temperature
                   stratification.

                   Eutrophic Lake  — Lakes with a good  supply  of nutrients; they may
                   support rich  organic  production,  such as algae blooms and are
                   commonly deficient in dissolved oxygen below the thermocline when
                   stratified.

                   Heat Dissipation Area — Localized area of  surface water, as  may be
                   designated by the Department, into which thermal effluents  may be
                   discharged for the purpose of mixing,  dispersing  or  dissipating such
                   effluents  without creating nuisances or hazardous conditions.

                   Hypolimnion — The lower  cold region of a stratified body of water
                   that extends from the thermocline to  the bottom of the lake and is
                   cut off from circulation with the upper waters, thereby receiving no
                   oxygen from the amosphere while stratified.

                   Industrial Water Supply — Water used for processing and cooling.

                   Mixing  Areas --  Localized  areas  of surface waters,  as  may be
                   designated by the Department,  into which non-thermal wastewater
                   effluents  may be discharged for the purpose of mixing,  dispersing or
                   dissipating such effluents  without creating nuisances or hazardous
                   conditions.

                   Natural Temperature — Temperature that would exist in a waterway
                   without the addition of heat of artificial origin.

                   Nontrout  Waters — Waters,  that  because  of their  physical  and/or
                   chemical  and/or biotic characteristics, are  not suitable for trout but
                   which,  in general, are  suitable for  a wide  variety of other fish
                   species.

                   Primary Contact Recreation — Recreational activities  that  involve
                   significant ingestion risks  and including but  not.  limited to  wading,
                   swimming, diving, surfing, and water skiing.

                   Secondary Contact Recreation — Recreational activities where the
                   probability of significant contact  or water ingestion is minimal and
                   including  but  not limited  to  boating, fishing;,  and  those  other
                   activities involving limited contact with surface waters incident to
                   shoreline  recreation.

                   Stream Temperature  — Temperature of   a  stream outside  of the
                   designated heat dissipation area.

                   Surface  Water  Classifications  —  Surface  waters  of this  State
                   identified as Fresh (FW), Tidal (TW) and Coastal (CW).  This includes
                   both interstate and intrastate waters.
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New Jersey
  (con't)
New Mexico
           28
Thermocline —  The middle layer of a  stratified body of water in
which  the  drop  in  temperature equals  or exceed 1.8  degrees F (1
degree C) per meter of depth.

Thermal Alterations -- The increase or decrease in temperature of
surface waters above or below the natural that may be caused by the
activities of man.

Trout Maintenance Waters — Waters that support trout throughout the
year or which have high potential for such use pending the correction
of short term environmental alterations.  Waters in which the  biotic
community  is manipulaxed for the purpose of trout maintenance and
which  are  otherwise not naturally suited for such purposes are not
included.

Trout  Production  Waters  —  Waters  that  are  used  by  trout  for
spawning and/or nursery purposes during their first summer; or  which
are  considered  to  have  high  potential  for  such  use  pending  the
correction  of short term environmental alterations.

Wildlife —  All undomesticated animals or fowl.

Coldwater  fishery - A stream  reach, lake or impoundment where the
water  temperature and  other characteristics are suitable for  the
support  of  coldwater fishes  such  as  brown, cutthroat,  brook,  or
rainbow trout.

cfs - Cubic feet  per second

Domestic  Water Supply  - A  surface  water  used  for drinking  or
culinary purposes with minimal treatment;  for example, by recrea-
tional   users or residents of  mountain areas.   (Note:  Although
bacterial quality in mountain  streams is  generally good and  the
ingestion of disease-causing  organisms  is  unlikely, disinfection  of
these waters is recommended prior to human consumption in light of
increasing recreational and grazing activity in mountain watersheds).

Fecal Coliform  - The portion  of the coliform group  which is present
in the gut or the feces of warmblooded animals.  It generally includes
organisms which are capable of producing gas fdr^om lactose broth in
a suitable culture medium with 24 hours at 44.5° - 0.05  C.

Fish Culture - Production of cold or warm water fish in a hatchery or
rearing station.

FTU  - Formazin Turbidity  Units  (see Standard Methods  for  the
Examination of Water and Wastewater).

High  Quality Coldwater fishery - A perennial stream  reach  in  an
essentially   primordial condition  which  has considerable esthetic
value.  A stream which is a superior coldwater fishery habitat.
                                        -55-

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New Mexico
  (con't)
New York
         29
Interstate Waters  - All  waters which  cross or form  a part of the
border between States.

Intrastate Waters - All waters of the State which are not interstate
waters.

LC-50 - The concentration of  a substance that is lethal to 50% of the
test organisms within a defined time period.

Limited Warmwater Fishery - A  stream  reach where intermittent
flow may severely limit the ability of the reach to sustain a natural
fish  population  on a  continuous annual  basis; or a  stream where
historical data indicates that water temperature may exceed 32.2  C
(90°F).

Marginal Coldwater Fishery - A stream reach, lake or impoundment
known to support  a coldwater fish population during  at  least some
portion of the year, even through historical data indicates that the
maximum temperature in the  stream may frequently exceed 20°C
(68°F).

Milligrams per liter (mg/1) - Milligrams  of solute per liter of solution;
equivalent  to  parts  per  million when  specific gravity  of solute  =
1.000.

Primary Contact - Any recreational or other water use in which there
is prolonged and intimate contact with  the water, such as swimming
and water  skiing,  involving considerable risk  of ingesting water  in
quantities sufficient to pose a  significant health hazard.

Secondary Contact - Any  recreational  or other water use in  which
contact with the water is either incidental or accidental and in which
the  probability of  ingesting  appreciable quantities  of water  is
minimal, such as fishing, commercial and recreational  boating and
any limited contact incident to shore line activity.

IDS - Total dissolved solids.

Warmwater Fishery -  A stream reach, lake or impoundment  where
the water temperature and other characteristics are suitable for the
support of  warmwater fishes such as large-mouth black bass, small-
mouth black bass, crappie,  white bass,  bluegill, flathead catfish,  or
channel catfish.

Industrial  water supply, municipal and  industrial water supply, live-
stock and wildlife watering, irrigation storage, municipal and  indus-
trial  water storage  are  self explanatory and no  definitions  are
needed.

(a) Commissioner shall mean the Commissioner of the  Department  of
Environmental Conservation.
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New York          (b) Administrator shall mean the  Administrator of the United States
  (con't)            Environmental Protection Agency.

                   (c) Best usage of waters as  specifed for each class shall be those uses
                   as determined by the commissioner and the administrator in accor-
                   dance  with  the  considerations  prescribed  by  the  Environmental
                   Conservation Law and Public Law 92-500.

                   (d)  Approved treatment as  applied  to  water supplies  shall  mean
                   treatment accepted as satisfactory by the authorities  responsible for
                   exercising supervision over the sanitary quality of water supplies.

                   (e) Source of water supply for drinking, culinary or food processing
                   purposes shall mean any source, either public or private, the waters
                   from which are used for domestic consumption or used in connection
                   with the processing of milk, beverages or foods. (When water is  taken
                   for public drinking,  culinary or  food  processing purposes, refer to
                   New York State Department of Health regulations 10 NYCRR 170).

                   (f) Primary contact  recreation  shall mean recreational  activities
                   where the human body may come in direct contact with raw water to
                   the point  of  complete body submergence.  Such uses include swim-
                   ming, diving,  water skiing, skin diving  and surfing.

                   (g) Secondary contact recreation  shall mean recreational  activities
                   where contact with the water is minimal and where ingestion of the
                   water is not probable.   Such  uses include but  are  not limited to
                   fishing and boating.

                   (h) Saline  surface  waters shall mean  all waters which are so desig-
                   nated by the commissioner.

                   (i) International  boundary waters  shall mean those waters to  which
                   the water quality  standards developed and  adopted pursuant to the
                   Boundary Water Treaty of 1909 and the Great Lakes  Quality Agree-
                   ment of 1972 apply.

                   (j) Sewage, industrial waste and other  wastes shall have the meanings
                   given in section 17-0105 of the Environmental Conservation Law.

                   (k) Estuary shall mean the tidal portion of a river or  stream.

                   (1) A  thermal discharge  is  one which results  or would result in a
                   temperature change of the receiving water.

                   (m) Heat  of  artifical origin shall mean  all heat  from other  than
                   natural  sources including but not limited to,  cumulative effects of
                   multiple and proximate thermal discharges.

                   (n) Coastal waters shall mean those marine waters within  the  terri-
                   torial limits  of the  State  other  than estuaries and  enclosed  bays.
                   Long Island Sound is designated as coastal waters for the purposes of
                   thermal discharges.
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New York
  (con't)
North Carolina
              30
(o)  Enclosed bays  shall mean those  marine waters within the terri-
torial  limits of  New York State,  other  than coastal waters  or
estuaries, in which  exchange of  sea  water is severely limited  by
barrier beaches.    For  the purposes  of  thermal  discharges,  the
following are designated as enclosed bays: Jamaica Bay, Hempstead
Bay, Great South Bay, Moriches Bay, Shinnecock Bay and Mecox Bay.

(1)  Source of water  supply for drinking, culinary, or food-processing
purposes shall mean  any source, either public or private, the waters
from which are used for human consumption, or used in connection
with the processing of milk, beverages, food, or other purposes which
require water meeting the maximum contaminant levels promulgated
by  the Environmental  Protection  Agency  pursuant to  the Public
Health Service Act,  42 U.S.C. 201 et seq., as amended by the Safe
Drinking Water Act,  42 U.S.C. 300 (f) et seq.

(2)  Approved treatment, as applied  to  water supplies,  means  treat-
ment accepted as satisfactory by the health authorities responsible
for exercising supervision over the sanitary quality of water supplies.

(3) Primary recreation shall include swimming, skin diving, skiing, and
similar uses involving human body  contact  with  water where such
activities take place in an organizd or on a frequent basis.

(4)  Secondary recreation shall include wading, boating, other uses not
involving human body contact with water,  and activities  involving
human body contact with water where  such activities take place on
an infrequent, unorganized, or incidental basis.

(5)  Fishing  shall  include the propagation  of fish and  such other
aquatic life as is necessary to provide a suitable environment for fish.

(6)  Shellfish culture shall include the use of waters for the propa-
gation, storage and  gathering of oysters, clams, and other  shellfish
for market purposes.

(7)  Agricultural shall include the use of waters for stock watering,
irrigation, and other  farm purposes but not as sources of water supply
for drinking, culinary, or food-processing purposes.

(8)  Waste disposal shall include the use  of waters for the disposal of
sewage, industrial waste, or other waste after approved treatment.

(9)  Tidal Salt  Waters  shall  mean  all  tidal waters  which  are  so
designated by the  Environmental Management Commission and which
generally have a natural chloride ion content in excess  of 500 parts
per million.

(10) Swamp Waters shall mean those waters which  are  so designated
by  the Environmental Management Commission and which are topo-
graphically located  so as to generally  have very low velocities and
certain  other  characteristics which are  different from   adjacent
streams draining steeper topography.
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North Carolina      (11) Offensive condition shall  be  construed to mean and include any
  (con't)            condition  or conditions  resulting from the  presence  of  sewage,
                   industrial  wastes, or other wastes within the waters of the state or
                   along the shorelines thereof which shall either directly  or indirectly
                   cause foul  or noxious  odors, unsightly conditions, or breeding of
                   abnormally large  quantities  of mosquitoes or other insect pests, or
                   shall  damage private or public  water supplies or other structures,
                   result in the development of gases which detroy or damage surround-
                   ing property, herbage or grasses,  or which shall affect the health of
                   any person residing or working  in the area.

                   (12)  Mountain and upper piedmont waters shall mean all the waters
                   of the  Hiwassee;  Little Tennessee, including  the Savannah River
                   Drainage Area; French Broad;  Broad; New: and Watauga River Basin
                   and those  portions of the Catawba River Basin above Lookout Shoals
                   Dam  and the Yadkin River Basin above the junction of the  Forsyth,
                   Yadkin and Davie County lines.

                   (13) Lower piedmont and coastal plain waters shall mean those waters
                   of the Catawba River Basin below Lookout  Shoals Dam; the Yadkin
                   River Basin below the junction  of the Foysyth,  Yadkin,  and Davie
                   county lines and all of the waters of Cape Fear; Lumber; Roanoke;
                   Neuse;  Tar-Pamlico;  Chowan; Pasquotank; and  White Oak River
                   Basins, except tidal salt waters which are assigned "S" classifications.

                   (14)  Estuarine Waters shall  mean those tidal salt waters assigned S
                   classifications.

                   (15) Best usage of waters as specified for  each class shall  be those
                   uses as determined by the Environmental Management Commission in
                   accordance with the provisions of Article 21, Chapter  143, General
                   Statutes of North Carolina, as  amended.

                   (16) Parts per million  and  parts  per billion as used herein shall be
                   construed  to mean milligrams  per liter (mg/1), and micrograms per
                   liter  (ug/1), respectively, as defined in the latest edition of "Standard
                   Methods for  the Examination of Water and Wastewater," published by
                   the American public  Health  Association,  American  Water  Works
                   Asociation, and Water Pollution Control Federation.

                   (17)  Present  waste treatment technology shall  mean  for industrial
                   wastewaters "Best Available Technology Economically Available," or
                   "New Source Performance  Standards"  if applicable and more strin-
                   gent,  as published in the Federal Register.  Where  such limits have
                   not been published or adopted they shall be established in accordance
                   with  15 NCAC  2B .0405 (c).  For municipal wastewater and other
                   similar discharges greater than 15,000  gpd, present  waste treatment
                   technology shall be defined, for oxygen  consuming wastes, as follows:

                     Ammonia  Nitrogen  2.0  mg/1  monthly average; 3.0  mg/1 weekly
                   average

                     BOD  5.0  mg/1 monthly average; 7.5  mg/1 weekly average
                                       -59-

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North Carolina     For municipal wastewater and other similar  discharges equal to or
  (con't)            less than  15,000  gpd,  present waste treatment technology shall be
                   defined, for oxygen consuming wastes, as follows:

                     BOD  30 mg/1 monthly average; 45 mgA weekly average

                   (18) 96-hour LC50 shall mean that concentrations of a toxicant which
                   is lethal (fatal) to 50 percent of the organisms tested under the  test
                   conditions in a period of 96 hours.  The 96-hour  LC50 concentration
                   for toxic  materials  shall be determined for  a sensitive indigenous
                   species in water conditions characteristic of the receivng waters  by a
                   review of  existing experimental  data or, if deemed necessary by the
                   director of the division, by bioassays conducted by or in cooperation
                   with the division.

                   (19) Effluent channel shall mean a discernable confined and discrete
                   conveyance which is used for transporting treated wastewater  to a
                   receiving stream  or other body of water; provided that such channels
                   shall:

                     (a)  Be  contained  entirely on  property owned (or controlled by
                   easement) by the discharger (to be demonstrated by the discharger).

                     (b)  Not  contain natural waters  except  when such waters occur in
                   direct response to rainfall events by overland runoff.

                     (c) Be so constructed or modified to minimize the migration of fish
                   into said channel.

                   Effluent channels shall be identified and designated on a case-by-case
                   basis prior to permit issuance.

                   (20) Division shall meet the Division of Environmental  Management
                   or its successors.
             31
North Dakota      02.201 Water  Usage — The best usage for the waters shall be those
                   uses determined to be the most consistent with present and potential
                   uses in accordance with the economic and social development  of the
                   area. Present principal best uses are those defined in parts 1,2,3, and
                   4, of this  Section, but are not to be construed to be the  only possible
                   usages permitted.

                   (1) Recreation,  Fishing and Wildlife — Waters  that are suitable for
                   the propagation and/or support  of fish and other aquatic  life;  that
                   will not adversely affect wildlife in the  area; and are suitable for
                   boating and swimming.*

                  *Natural high turbidities  in some waters and physical charactericts of
                   banks and stream  beds of many  streatms are factors that limit their
                   values for bathing.    Low flows  or natural  physical and  chemical
                   conditions in some waters may limit their value for fish propagation
                   or aquatic life.
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North Dakota       (2)  Municipal and Domestic Water — Waters that are suitable for use
  (con't)           as a source of water supply for drinking and culinary purposes after
                   treatment to a level approved by the State Health Department.

                   (3) Industrial Water - Waters that are suitable for industrial purposes,
                   including food processing, after treatment.  Treatment may include
                   that necessary for prevention of boiler scale and corrosion.

                   (4)  Agricultural Uses — Water suitable for irrigation, stock watering,
                   and other agricultural uses, but not suitable for use  as a source  of
                   domestic supply  for  the  farm  unless  satisfactory  treatment  is
                   provided.

                   02.202 Pollution — Pollution shall mean such contamination; or other
                   alteration of the physical, chemical, or biological properties,  of any
                   waters of the  State, including  change in  temperature, taste, color,
                   turbidity, or odor  of  the waters;  or such discharge of any  liquid,
                   gaseous,  solid, radioactive,  or other substance into any waters of the
                   State as  will or is likely to create a nuisance or render such  waters
                   harmful, detrimental, or injurious to public health, safety, or welfare,
                   or to domestic, commercial, industrial, agricultural, recreational,  or
                   other legitimate beneficial  uses, or to livestock, wild animals, birds,
                   fish, or other aquatic life.
    oo
Ohio               (A) Ambient Water Temperature — is the special (longitudinal  lateral
                   and vertical) and  temporal  water  temperature  structure that  is
                   actually  measured before  a  specific waste  heat  discharge,  and  is
                   outside the influence of any thermal mixing zone.

                   (B)  Application factor —  is a numerical value applied to the LC50  or
                   other bioassay test  end  point.  It  provides the concentration of  an
                   effluent  or toxic substances that would be safe for aquatic organisms
                   in the waters of the state.

                   (C)  Average  Temperature  —  represents the  arithmetic  mean  of
                   multiple, equally spaced, daily average temperatures over a consecu-
                   tive 15 or 30 day period.

                   (D) Coldwater  Fish —  are  those species  of  fish  that  thrive  in
                   relatively cold water.  These species include, but are not limited  to
                   Salmon  and Trout  (Salmonidae),  Sculpins  (Cottidae), and certain
                   Minnow (Cyprinidae)species.

                   (E)  Confluence — is the point where two cr more bodies of water flow
                   together.

                   (F)  Daily Average  Temperature  — is the arithmetic mean of multiple,
                   equally spaced, temperature measurements to be taken at least once
                   per hour  during a 24-hour day.

                   (G) Degradation — is a lowering of the existing water quality in the
                   surface waters of  the  state as a result of the activities of man, due
                   to physical  changes, chemical, biological or  thermal discharges from
                   both point and non-point sources.
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Ohio               (H)  Designated Use — is a use of the surface waters of the state,
  (con't)            established by the Water Quality  Standards,  Chapter 3745-1 of the
                   Ohio Administrative Code.

                   (I) Director — is the Director of the Ohio Environmental Protection
                   Agency.

                   (J) Discharge — is the addition of any pollutant to the waters of the
                   state from a point source.

                   (K)  Dynamic Bioasay — is a determination of  the biological effect of
                   a substance, factor or condition employing living organisms or cells
                   as the indicator in a continuous flow-through system.

                   (L)  Endangered Species — are those aquatic species of the statefe
                   biota which are threatened with statewide  extinction, as listed in
                   Rule 1501:31-23-01 or the Ohio Administrative Code.

                   (M)  Estuary —  is  the section of  a Lake Erie tributary at the mouth
                   where tributary and Lake Erie waters mix. This area is characterized
                   by flow reversals, seiche influences  and is generally located between
                   the  farthest downstream riffle of the tributary and Lake Erie proper.
                   All  tributaries  of estuaries shall  be considered  estuaries  below the
                   Lake Erie mean high water level.

                   (N)  Fecal Coliform  — is the  portion of the coliform  group which is
                   present in  the intestinal tract  of  warm-blooded  animals,  and is
                   usually evidence of the presence of human or animal waste.

                   (O)  Geometric Mean — is  the  Nth  root  of  the  product of  N
                   quantities.

                   (P) Headwaters — is the source or beginning of a stream.

                   (Q)  LC50 — is the concentration of a test  material in  a suitable
                   dilutant at which 50 per cent of  the  exposed  organisms die in a
                   specified period of exposure.  LC50 is often used interchangably with
                   Median Tolerance Limit (TLm), which measures the concentration at
                   which 50 per cent organisms survive.

                   (R)  Long-term Avoidance — is the permanent or  prolonged avoidance
                   by a species  population  of  an area or  habitat that  was formerly
                   inhabited by that species population, but is absent or singnificant]y
                   reduced in  density and biomass as a result of permanent limiting or
                   unfavorable environmental conditions.

                   (S) Maximum Daily Temperature — is the highest arithmetic mean of
                   temperatures observed for  any two  consecutive hours during a 24-
                   hour day, or during the operation day if the waste heat discharge flow
                   is of a shorter duration than two hours in a 24-hour day.

                   (T) Micrograms per Gram (ug/g) — is the micrograms of substance per
                   gram of weight.
                                        -62-

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Ohio               (U) Micrograms Per Liter (ug/1) — is the micrograms of substance per
  (con't)           liter of solution, and is 1/1000 of a milligram per liter.

                   (V) Milligrams per Liter (mg/1) — is the milligrams of substance per
                   liter of solution, and is equivalent to parts per million, assuming unit
                   density.

                   (W) Mine Drainage — is surface or groundwater  flowing through or
                   from  mines and mine sites, it is usually  characterized  by concen-
                   trations  of acidity or  alkalinity,  various heavy metals, sulfates, and
                   dissolved solids.

                   (X) Mixing Zone — is an area of water body contiguous to a treated or
                   untreated wastewater  discharge  of quality characteristics different
                   from  those of the receiving water.   The discharge is in transit and
                   progressively diluted from the source to the  receiving system.  The
                   mixing zone should be considered as  a place where  wastewater and
                   receiving water mix and  not as a place where wastes are treated.

                   (Y) Natural Conditions  —  are those  conditions  that  are  measured
                   outside the influence of man's activities.

                   (Z) Non-Persistent Toxicant — is a toxic substance with a halflife less
                   than eight weeks, but  is readily degraded  in  an aquatic system, and
                   does not have a tendency to accumulate in  organisms.

                   (AA) Non-Point Source — is any source of pollutants other than those
                   defined as point sources.

                   (BB) Nuisance — is a condition which  interferes with the  designated
                   uses of the surface waters of the state.

                   (CC)  Nursery  Areas — are regions in a water  body  where young or
                   newly hatched organisms occur in relatively higher  abundance  than
                   surrounding areas.

                   (DD)  Persistent  Toxicant — is one which either (a) by itself or as its
                   toxic transformation  product, has a halflife for degradation under
                   natural environmental conditions of  more  than eight weeks, or (b) by
                   itself or as its toxic  transformation product, upon entering surface
                   waters may biomagnify through successive trophic levels in the biota
                   of the receiving stream.

                   (EE) Point Source — is any discernible, confined or discrete convey-
                   ance from which a pollutant is or may be  discharged to the surface
                   waters of the state.

                   (FF) Pollutant — is sewage, industrial waste or other waste as defined
                   by section 6111.01(B) thru (D) of the Ohio Revised Code.

                   (GG)  Receiving  Waters  — are the surface waters of  the state into
                   which point and non-point sources flow.
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Ohio               (HH) Recreation Season — is the period from 1 May to 15 October.
  (con't)
                   (II)  Representative Aquatic Species — are those organisms, either
                   natural  or  introduced, which presently exist  or have  existed in the
                   surface  waters  of the state prior to July 1, 1977; with the exception
                   of those banned species outlined  in Rule 1501:31-19-01 of the  Ohio
                   Administrative  Code.  In addition, it will include any species that are
                   legally introduced  into the surface waters of the state.  Specifically
                   included are those species which:

                     1. represent the full range of response to environmental  conditions
                   from sensitive through tolerant;

                     2. are commercially or recreationally valuable;

                     3. are representative of each community trophic level;

                     4. are threatened, rare, or endangered;

                     5. are critical  to the structure and function of the ecosystem;

                     6. dominate the community in terms of density and biomass;

                     7. are  potentially capable of becoming localized nuisance species,
                   or;

                     8. are representative of the ecological and  physiological require-
                   ments of species determined in 1-7, but which  themselves may not be
                   representative.

                   (JJ) Spawning Areas — are regions in a water body, such as reefs and
                   marshes  where  fish or other  aquatic  organisms spawn or breed in
                   relatively higher abundance than surrounding areas.

                   (KK)  Standard   —  is  a   definitive  numerical value  or  narrative
                   statement promulgated by the Ohio EPA to maintain and protect the
                   designated  uses of  the waters of the state.

                   (LL) Static Bioassay — is a determination of the biological effect of a
                   substance, factor or condition employing living organisms or cells as
                   the indicator.   In a static system, test organisms remain in the same
                   test medium for the duration of the test.

                   (MM) Surface Waters of the State — or watercourses are all streams,
                   publicly-owned  lakes and reservoirs,  ponds, marshes or other water-
                   ways  which are situated wholly or partially within the boundaries of
                   the state,  except  those  private  waters  which do  not combine or
                   effect a junction  with natural surface  waters.  Waters defined as
                   sewerage system,  treatment  works  or  disposal system  in  chapter
                   6111.01 of the Ohio Revised Code are not included.
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Ohio
  (con't)
Oklahoma
         33
(NN) Thermal Mixing Zone — is a region of a water body into which
waste heat is discharged that is  of a different temperature structure
than the receiving water  body,  and within which the average  and
maximum daily temperatures do not apply, except as prescribed by
these rules.

(OO) Toxic Substances — are any liquid, gaseous or solid substances
present in  such  concentrations  that  can kill, injure  or impair  life-
cycle functions of any organisms.

(PP) Tributary — is a smaller stream flowing into a larger  body of
water.

(QQ)  Warmwater  Fish — are  those species  of fish  than  inhabit
relatively warm water. These species include, but are not limited to
Black Bass and Sunfish (Centrarchidae), and Shad (Clupeidae).

(RR) Waste Heat  Discharge  —  is a  point source discharge  through
which excess heat is rejected into the surface waters of the state.

Abatement - Reduction of the degree or intensity of pollution.

Allowable  load  -  For perennial streams  -  the allowable  load for
oxygen demanding substances shall be based on attaining an instream
D.O. of  5.0  mg/1  for warm  waters  and  6.0  mg/1 for  those waters
designated as smallmouth  bass or trout fisheries, at and above the
seven-day,  two-year low flow value.

For intermittent streams - the allowable loading for oxygen demand-
ing substances shall be based on attaining an instream D.O.  of 5.0
mg/1 at and above 1.0 cfs.

Alpha  particle - A positively charged particle  emitted  by  certain
radioactive materials.  It is  the least penetrating of three common
types  of  radiation (alpha,  beta and  gamma)  and  usually  is  not
dangerous to plants, animals,  or humans.

Anti-degradation clause - A provision in water quality laws  that
prohibits deterioration of water  quality  in  areas  where pollution
levels are presently below those allowed.

Assimilative capacity - The amount of pollution a stream can receive
and still recover without permanent damage  or  alteration of bene-
ficial uses.

Benthic macroinvertebrates  -  Invertebrate animals  that  are large
enough to be seen  by  the  unaided eye  and can be retained  by  a U.
S.Standard  No. 30 sieve,  and live at least part of their life cycles
within  or upon  available substrates in a  body  of  water or water
transport system.
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Oklahoma          Beta particle - A negatively charged elementary particle emitted by
  (con't)            radioactive decay that may cause skin burns. It is easily stopped by a
                   thin sheet of metal.

                   Carcinogenic - Cancer producing.

                   Coliform group  organisms (total coliform organisms) - All of the
                   aerobic  and facultative  anaerobic gram-negative, non-spore-forming
                   rod shapped bacteria that ferment lactose broth with gas formation
                   within 48 hours at 35 C.

                   Color -  Color as used herein  means true color  as  well as apparent
                   color. True color is the color of the water from which turbidity has
                   been removed.  Apparent color includes  not  only  the color due to
                   substances in solution  (true  color), but  also  that color  due  to
                   suspended matter.

                   Conservative element - A substance which persists in the environ-
                   ment, having characteristics which are resistant to ordinary biolo-
                   gical degradation.

                   Dissolved oxygen (DO) - The amount of oxygen dissolved in water at
                   any given time,  depending upon the  water temperature, the partial
                   pressure of oxygen in the  atmosphere in contact with the water, the
                   concentration of dissolved salts in the water, and the physical aeration
                   of the water.

                   Epilimnion - The uppermost homothermal region of a stratified lake.

                   Eutrophication (natural) - The normally slow aging process by which a
                   lake evolves into a bog or  marsh and ultimately assumes a terrestrial
                   state.  During eutrophication the lake becomes  so rich in  nutritive
                   compounds  (especially nitrogen and phosphorus) that algae  and  other
                   microscopic plant life become superabundant,  thereby "choking" the
                   lake, and causing the lake to advance in serai stages.

                   Fecal coliform - A  group of organisms  common  to the  intestinal
                   tracts of man and of animals. The presence of fecal coliform bacteria
                   in water is an indicator  of pollution  and of potentially  dangerous
                   bacterial contamination.

                   Geometric mean - G   = n  B~ X B2 X ...B
                                                                                 JLV-
                   Where:  n = number of samples and B   =  the bacterial count for n
                   sample.

                   Intermittent stream - A stream or reach of a stream that flows only
                   at certain  times of the year.   In such  streams the runoff from the
                   watershed is smaller than the  ground evaporation and seepage losses
                   in the ground.
                                        -66-

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Oklahoma          Nephelometric turbidity (unit (NTU) - This method is based upon a
  (con't)            comparison  of the intensity  of light scattered by  the  sample under
                   defined conditions with the intensity of light scattered by a standard
                   reference suspension  (formazin).    The  higher  the  intensity  of
                   scattered light, the higher  the  turbidity.   Readings  in NTU's are
                   considered comparable to the previously reported  Jackson Turbidity
                   Units(JTU).

                   Non-conservative element - A substance which undergoes degradation
                   or change in the environment other than dilution.

                   Nonpoint source - A source of pollution without  a  well defined point
                   of origin.

                   Nutrients -  Elements  of compounds essential as raw  materials for
                   organisms growth and development; these  include carbon,  oxygen,
                   nitrogen and phosphorus.

                   Polychlorinated biphenyls (PCBs)  - Polychlorinated  biphenyls, a group
                   of organic compounds  (206  possible) which  is  constructed  of  two
                   phenyl rings and more  than one chlorine atom.   PCBs are used as an
                   electrical insulating fluid in  capacitors and transformers, and in the
                   manufacture of plastics.

                   Perennial streams  - A  stream  or  reach  of  a stream  that flows
                   continuously throughout the year  either due to watershed runoff or to
                   inflow of the ground water to the stream.

                   Picocurie (pCi)  - That  quantity of radioactive material producing
                   2.22 nuclear transformations  per  minute.

                   Point source  - Any discernible,  confined and discrete conveyance,
                   including  but  not limited to any pipe, ditch, channel, tunnel, well,
                   discrete fissure, container,  rolling  stock  or concentrated  animal
                   feeding operation from which pollutants are  or  may be  discharged.
                   This term does not include return flows from irrigated agriculture.

                   Pollution  -  Contamination  or  other alteration  of  the  physical,
                   chemical or  biological  properties  of  any natural waters of the State,
                   or such discharge of any liquid,  gaseous or solid substance into any
                   waters of the  State as  will or is likely to create a nuisance or render
                   such  waters  harmful or detrimental or  injurious  to public  health,
                   safety or welfare,  or  to domestic,  commercial, industrial,  agricul-
                   tural, recreational,  or other legitimate beneficial uses,  or  to live-
                   stock, wild animals, birds, fish or other aquatic life.  (82 O.S. Supp.
                   1976,1926.1(1))

                   Salinity - The  degree of salt in water

                   Sample  standard  - The arithmetic mean of historical data plus  two
                   standard deviations of the mean.
                                        -67-

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-r— g
Oklahoma          Seven-day, two-year low flow - A  seven-day, two-year  low flow is
  (con't)            specified as the design flow for  determining allowable discharge load
                   to a stream.  The flow  is calculated as a moving average  of seven
                   consecutive days for each year  in a given record.  These seven-day
                   low flow values are ranked in ascending order.  An order number  (m)
                   is calculated  based  upon  the  number  of years  record  (n), with a
                   recurrence interval (R) of two years, as m = (n+l)/R, where R = two
                   years. A value of flow corresponding to the m   order is taken as  the
                   seven-day, two year low  flow for that historical data.

                   Standard deviation - A  statistical measure of the dispersion around
                   the arithmetic mean of the data.

                   Similarity index -

                            Where:
                            A = No. or species in the sample at upstream station.

                            B = No. of species in the sample at downstream station.

                            C = No. of species common  to both A and B.

                   Synergistic effect -  Indicates the presence of cooperative pollutant
                   action such that the  total effect is  greater  than the sum of  the
                   effects of each polllutant taken  individually.

                   LC50 - Lethal Concentration -  the concentration of a toxicant in an
                   external medium that is lethal to fifty percent of the test animals for
                   a specified period of exposure.

                   Thei- nal pollution - Degradation of water quality by the introduction
                   of heated effluent. Primarily a  result of the discharge of the cooling
                   waters from industrial processes particularly from electrical power
                   generation.

                   Thermal stratification  -  Horizontal  layers  of  different  densities
                   produced in a lake due to temperature.

                   Wastes  -  Industrial waste  and all other liquid,  gaseous  or solid
                   substances which may pollute or tend to pollute any  waters  of  the
                   State. (82 O.S. Supp. 1976, s92S.l (ft).

                   v/.i13'3  3f the  State -  All streams, lakes,  ponds, marshes, water-
                   courses,   waterways,  wells,  springs,  irrigation  systems,  drainage
                   systems, and all other bodies or accumulations of water, surface  and
                   underground,  natural  or artificial,  public  or  private,  which  are
                   contained  within, flow  through, or  border  upon  this State or  any
                   portion thereof, except privately owned reservoirs used in the process
                   of cooling water for industrial purposes, provided that water released
                   from  any such reservoir into a  stream system of the  State shall be
                   and become waters of the State. ',31  0.3. supp. 1976, §926.1 (6)).

                   Yearly mean  standard - The arithmetic mean of  historical data plus
                   one standard deviation of the mean.
                                        -68-

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       34
Oregon            Applicable to all basins unless context requires otherwise:

                   A. "BOD" means  5-day 20°C. Biochemical Oxygen Demand.

                   B. "DEQ" or "Department" means  the  Oregon State Department of
                   Environmental Quality.

                   C. "DO" means Dissolved Oxygen.

                   D. "EQC"   means   the   Oregon   State   Environmental   Quality
                   Commission.

                   E. "Estuarine waters" means all mixed fresh and oceanic waters in
                   estuaries or bays  from the point of  oceanic water intrusion inland to
                   a line connecting the outermost points of the headlands or protective
                   jetties.

                   F. "Industrial waste" means any liquid, gaseous,  radioactive or solid
                   waste substance or a combination thereof resulting  from any process
                   of industry, manufacturing, trade or business, or from the develop-
                   ment or recovery of any natural resources.

                   G. "Marine waters"  means all  oceanic, offshore waters outside of
                   estuaries or bays and within the territorial limits  of the  State of
                   Oregon.

                   H. "mg/1" means  milligrams per liter.

                   I.  "Pollution"  means such contamination or other  alteration of the
                   physical, chemical or biological properties of any  waters of the state,
                   including change  in temperature, taste, color, turbidity, silt or odor
                   of the waters, or  such radioactive or other  substance into any waters
                   of the state which either by itself or in connection with any other
                   substance present, will or can reasonably  be expected to create  a
                   public  nuisance  or  render  such waters  harmful, detrimental  or
                   injurious  to  public  health,  safety  or welfare,  or   to  domestic,
                   commercial, industrial, agricultural, recreational or other legitimate
                   beneficial uses or to livestock, wildlife, fish or other aquatic life or
                   the habitat thereof.

                   J. "Public water" means  the same as "waters of the state".

                   K. "Sewage" means  the  water-carried human or animal waste  from
                   residences,  buildings, industrial  establishments or  other  places
                   together with such groundwater infiltration and surface water as may
                   be present.   The  admixture  with sewage  as  herein  defined  of
                   industrial wastes  or  wastes, as defined in  subsections  (F) and (M) of
                   this section, shall also be considered "sewage" within the meaning of
                   this division.

                   L. "SS" means Suspended Solids.
                                        -69-

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Oregon
  (ccn't)
            35
Pennsylvania
M.  "Wastes"  means sewage,  industrial  wastes, and all other liquid,
gaseous,  solid,  radioactive, or  other  substances  which will  or  may
cause pollution  or tend to cause pollution of any water of the state.

N.  "Waters  of  the state" include lakes, bays,  ponds, impounding
reservors, springs, wells, rivers, streams,  creeks,  estuaries, marshes,
inlets, canals, the Pacific Ocean within the territorial limits of the
State of Oregon and  all other  bodies  of  surface  or underground
waters, natural or artificial, inland o-' coast il, fV-^'n ->r salt, public or
private (except those private waters which do not combine or effect
a junction with natural  surface  or underground  waters), which are
wholly or  partially  within  or  bordering the state  or  within its
jurisdiction.

O.  "Low Flow  Period" means the flows in a stream resulting from
primarily groundwater  discharge or baseflows augmented from lakes
and storage projects during the driest period of  the  year.   The dry
weather  period varies across  the  state  according  to climate  and
topography. Wherever the Low Flow Period is indicated in the Wafer
Quality Management Plans, this period has been approximated by the
inclusive months.  Where applicable in a waste discharge permit, the
Low Flow Period may be further defined.

P. "Secondary Treatment as the following context may require for:

    1.  "Sewage   wastes"  means  the  minimum  level  of  treatment
mandated by EPA regulations pursuant to Public Law 92-500.

    2. "Industrial and other waste sources" imply control equivalent to
Best Practicable Treatment (BPT).

Ambient stream concentration — The range  in concentration or level
of a water quality parameter which would  be expected to occur in the
absence of human activities.  The value is normally determined from
quality measurements  of waters  that  are not  affected  by waste
discharges or other human activities.

Ambient temperature — The temperature of the water body upstream
or outside of the influence  of a heated waste  discharge or waste
discharge complex.  The ambient temperature sampling point should
be unaffected by any sources of waste heat.

Application factor — The ratio of the safe concentration to the 96-
hour LC50 concentration which is assumed to be constant for related
groups of chemicals  and is multiplied by  an LC50 value in order to
produce the estimated safe concentration of a pollutant necessary to
protect the balanced indigenous communtiy in the receiving  body of
water.

Balanced community — A group of populations occupying a  common
area which constists of desirable species  of fish, shellfish, and other
wildlife,  including  the  biota  of other  trophic  levels  which  are
necessary as  part of the food chain or otherwise ecologically impor-
tant to the maintenance of these populations.
                                        -70-

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Pennsylvania       Carcinogenic — Producting cancer
  (con't)
                   Clean Streams  Law — The Clean  Streams Law (35 P.S.  1 I  691.1-
                   691.1001).

                   Clean Water Act — 33 U.S.C. 1 1251 et seq.

                   Cumulative pollutant — A pollutant which is measurably increased in
                   concentration within aquatic organisms relative to concentrations in
                   the receiving waters.

                   Daily average — The arithmetic average of all determinations made
                   during a calendar month.

                   Daily determination — The arithmetic average of all  determinations
                   made during a 24-virr ->:rio L

                   Department —  The Department of Environmental Resources of  the
                   Commonwealth.

                   Effluent limits  — Any restriction  established  by the Department on
                   quantities,  rates, and  concentrations of  pollutants which are  dis-
                   charged into the waters of this Commonwealth.

                   Epilimnion — Warm upper layer of nearly uniform temperature in a
                   stratified body of water, such as a lake or impoundment.

                   Existing potable water supply  — A source of  water supply which is
                   presently being  used  by humans  after  conventional  treatment  for
                   drinking, culinary  and  other  purposes,  such  as  inclusion  in food
                   products, after conventional  treatment.

                   Existing sensitive industrial water supply —  An existing industrial
                   water supply  use which would require installation of additional water
                   treatment by the industrial user in the event that the total dissolved
                   solids concentration instream exceeds 500  mg/1 as a monthly average
                   and 750 mg/1 at any one time.

                   LC50 value — The concentration of a pollutant in test waters that is
                   lethal to 50% of the test organisms during continuous exposure for a
                   specified period of time.

                   Maximum allowable daily load  (MDL) — The maximum  amount of a
                   pollutant from point and nonpoint sources  which the receiving waters
                   can assimilate  at the  accepted design stream flow without  endan-
                   gering the achievement of water quality standards.

                   Mutagenic —  Producing adverse changes in the genes.

                   Noncumulative  pollutant  — A pollutant  which is not  measurably
                   increased  in concentration within aquatic  organisms  relative  to
                   concentrations in the receiving waters.
                                       -71-

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Pennsylvania
  (con't)
Rhode Island
            36
Representative important  species — Those species  of aquatic life
whose protection and propagation will assure the sustained presence
of a balanced indigenous community.  Such species are representative
in the sense that maintenance of water quality criteria will  assure
both the natural completion of the species' life cycles and the overall
protection  and sustained  propagation  of  the  balanced  indigenous
community.

Safe concentration value — An estimted pollutant concentration as
may be determined by  the  Department  from relevant aquatic field
studies, substantial available  scientific literature, or bioassay tests
tailored to the ambient quality  of the receiving waters  which will
allow the survival of representative important species  that have been
chronically exposed to the concentration in the receiving waters.

State water  plan  —  The  reports,  studies,  inventories  and  plans
prepared by the Department to guide the conservation, development,
and administration of the  Commonwealth's water and related land
resouces as authorized by 71 P s 510-4.

Tetratogenic  — Producing monstrosities,  malformations, or extreme
deviations from the normal structure of life forms.

Testwater  —  a receiving  water directly  upstream  from a  waste
discharge  which is  relatively  unaffected by human activities, or a
reconstituted  water  which  approximates  the  ambient  chemical
characteristics of these receiving waters.

Total dissolved solids  — The portion of the toal residue of water
capable of passing through a standard glass fiber filter  —  Reeve-
Angel type 934A,  984H; Gelman  Type A; or equivalent — and which
remains after  evaporation  and drying to  a constant weight at a
temperature of 103 - 105°C.

Water-quality-based effluent  limitations — An effluent limitation
based on  the  need to  attain or maintain specific  water  quality
criteria in order to assure protection of a designated use.

Water quality criteria — Levels of parameters  or  stream conditions
that need  to be  maintained or  attained  to  prevent or eliminate
pollution.

Water  quality  standards  — The  combination  of water  uses  to be
protected and the water quality  criteria necessary to protect those
uses.

"administrator" shall mean the administrator  of the  United  States
Environmental Protection Agency or  his designee.

"bypass" shall  mean  the intentional diversion of wastes from any
portion  of a Wastewater Treatment Facility.

"cause" shall mean cause, suffer, or allow.
                                        -72-

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Rhode Island        "CWA" shall mean the Federal Clean Water Act (formerly referred to
  (con't)            as the Federal  Water  Pollution Control  Act),  Pub  L.  92-500,  as
                   amended by Pub. L. 95-217 and Pub. L. 95-576, 33 U.S.C. 1251 et seq.

                   "depuration" shall mean the transplantation or artificial holding of
                   shellfish  for purification purposes.

                   "director"  shall  mean the  director of the department of environ-
                   mental management or any subordinate or subordinates to  whom he
                   has  delegated the  powers and  duties  vested  in him by  these
                   regulations.

                   "discharge" shall  mean cause sewage or other waste, unless a more
                   specific  waste is indicated, to  be discharged,  deposited, dumped,
                   spilled or leaked into  any waters of  the State or to be placed in a
                   location  where the  director determines  it  is likely to enter  any
                   waters of the State.

                   "effluent limited waters" shall be  as  defined in paragraph 9.011 of
                   these regulations.

                   "effluent limitations"  shall mean any restriction imposed  by these
                   regulations or the director pursuant to these  regulations  on quality,
                   rates and  concentrations of pollutants which are  discharged from
                   point sources into any waters of the State.

                   "EPA" shall   mean  the  United States  Environmental  Protection
                   Agency.

                   "ESB" shall mean the  Environmental  Standards Board established by
                   Chapter  42-17.3  of  the General laws of  Rhode Island of  1956, as
                   amended.

                   "fresh water"  shall mean those waters of the State which  are not sea
                   water.

                   "hazardous  waste" shall be defined pursuant to Chapter 23-46.2 of the
                   General Laws  of Rhode Island of 1956, as amended, and  regulations
                   adopted pursuant thereunder.

                   "high quality waters" shall  mean water whose quality is higher than
                   the water quality criteria for the water's designated class, but  which
                   does not  meet all the water quality criteria for a higher class.

                   "low  quality  waters" shall  mean waters which  do not  meet their
                   designated  water quality standards.

                   "margin of safety"  shall mean a  requirement in  addition to specific
                   requirements of these regulations which the director deems necessary
                   to protect the public health and safety and the environment.
                                        -73-

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Rhode Island       "marina" shall mean any facility, public or private, at which vessels
  (con't)            are docked or moored.

                   "new discharges" shall  mean discharges for which the director had not
                   issued  an order  of approval on or before the effective date of these
                   regulations.

                   "NPDES" or  National  Pollutant  Discharge  Elimination System shall
                   mean  the  national  program  for issuing,  modifying,  revoking and
                   reissuing, terminating, monitoring, and enforcing permits pursuant  to
                   Sections 402, 318, and  405 of the Clean Water Act.

                   "other  waste" shall  mean chemicals, acids, dye-stuff, starch, coloring
                   matter,  oil and tar,  radio-active substances, and any  compound,
                   solution, mixture or product thereof, and every substance which may
                   be injurious to public  health or comfort, or which would injuriously
                   affect  the  natural  and healthy propagation, growth, or development
                   of any  fish or shellfish  in any waters of the  State, or the nourishment
                   of the  same, or which would injuriously  affect the flavor, taste,  or
                   value as food of any such fish or shellfish; or which would defile said
                   waters or injure or defile any vessel, boat,  wharf, pier, or any public
                   or private property upon,  in  or under said  waters,  or any  shore
                   thereof.

                   "person" shall mean an individual trust, firm, joint stock company,
                   corporation  (including  a  government  corporation),   partnership,
                   association, state, municipality, commission, political subdivision of a
                   state, or any interstate body.

                   "pollution" shall mean the entrance or  discharge of sewage or other
                   waste into any of the waters of the State in such quantity, either  by
                   itself  or in  connection  with other sewage or other  waste so dis-
                   charged, as to alter the physical or chemical properties, or biology,of
                   said waters,  including  change in temperature,  taste, color, turbidity
                   or odor, and to cause or be likely to cause damage to the public, or  to
                   any person having a right to use said waters  for boating, fishing  or
                   other purposes,  or  owning property in, under  or bordering upon the
                   same.

                   "POTW" or Publicly Owned Treatment Works shall  mean  a treatment
                   works  which is owned by the State or a municipality,  or other public
                   authority.

                   "schedule of  compliance"  shall mean a schedule of remedial measures
                   including an enforceable sequence of interim requirements leading to
                   compliance with applicable water quality standards, effluent limita-
                   tions, or orders of the  director.

                   "sea water" shall mean those waters subject to  the rise and fall of the
                   tide.
                                        -74-

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Rhode Island
  (con't)
South Carolina
             37
"severe property damage" shall mean substantial physical damage to
property, damage to the treatment facilities which would cause them
to become inoperable or  substantial  and permanent  loss of natural
resources  which can reasonably be expected to occur in the absence
of a bypass.   Severe  property damage does not mean economic loss
caused by delays in production.

"sewage"  shall  mean  any human or animal  excremental liquid  or
substance,  any  decomposed  animal  or vegetable matter,  garbage,
offal, filth, or waste.

"storm  water sewer" shall mean a conveyance  or system  of conve-
yance  (including but not limited to  pipes,  conduits,  ditches, and
channels)  primarily used  for collecting  and  conveying storm water
runoff.

"surface water  degradation; degradation" shall mean reduction  in
attained or attainable levels of one or more water quality criteria.

"system or  means  of wastewater treatment" or treatment works"
shall mean any  method, devices  or  system for preventing abating,
reducing, storing,  treating, separating, recycling, reclaiming or dis-
posing of  sewage  or  other waste, including storm water  runoff and
sewage or other waste in combined storm water and sanitary sewer
systems.

"treatment  works"  include  intercepting sewers,  outfall  sewers,
sewage collection systems and the land that will be an integral part of
the treatment process (including land use for  the storage of treated
wastewater in land treatment systems  prior to land application) or is
used for ultimate disposal of residue resulting from such treatment.

Wastewater Treatment Facilities include pumping, power, and other
equipment and their appurtenances, and elements essential to provide
a reliable recycled suply such as standby treatment  units and  clear
well facilities.

"water quality limited waters" shall be as defined in paragraph  9.012
of these regulations.

"waters of the State or 'Waters'" shall mean all surface  waters of the
State of Rhode Island, including all tidewaters within the State and all
inland waters of any river, stream, brook, pond or lake.

1. Agricultural  — shall include  use  of  water  for  stock  watering,
irrigation and other farm purposes.

2. Conventional treatment as applying to potable water  supplies —
shall mean treatment including at least  flocculation, sedimentation,
filtration and disinfection.
                                        -75-

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South Carolina      3.  Direct  Water contact —  shall mean an activity where the human
  (con't)           body  may  come into direct contact with  water to the  point  of
                   complete submergence, including but not limited to activities such as
                   swimming, water skiing and skin diving.

                   4.  Fishing — shall  mean the taking, harvesting,  catching  and the
                   propagation of fish or shellfish.

                   5. Mixing  zone,  as used  in  Section III,  Number 11, —  shall mean a
                   designated area within which specified  water quality standards are
                   not applicable.  The boundary of  this zone shall be determined by the
                   Department of  Health and Environmental  Control on an  individual
                   project basis after  consideration of the waste discharge  and the
                   receiving waters.  A mixing zone shall  not  prevent free passage of
                   fish and  shall  not interfere  with  the  designated use outside  its
                   established boundary.

                   6. Natural or naturally occurring values  — shall mean for all of the
                   waters of the  Stae:

                     (a) those  water  quality  characteristics  (physical, chemical  and
                   biological) which exist unaffected by — or unaffected  as  a conse-
                   quence of — any water use by any person; or,

                     (b) those  water  quality  characteristics  (physical, chemical  and
                   biological) which exist  unaffected by  the  discharge,  or  direct  or
                   indirect  deposit  of,  any  solid, liquid or gaseous  substance by any
                   person or as a result of any cultural activity.

                   7.  Point of discharge — shall mean that  location in or adjacent to a
                   body of  water at which  any liquid, solid or gaseous substances are
                   discharged or  deposited.

                   8. Propagation — shall mean the  continuance of species by generation
                   or successive production  in  the  natural  environment, as opposed to
                   the maintenance of species by artificial culture and stocking.

                   9. Source of  water supply for drinking,  culinary or food processing
                   purposes —  shall  mean  any source, either public or   private, the
                   waters from  which are  used for domestic consumption, or used in
                   connection with the processing of milk, beverages, food or for other
                   purposes which require finished water meeting regulations established
                   pursuant  to   Section 1412  of  the  Public  Health  Service  Act  as
                   amended by  the Safe Drinking Water Act (Public Law  93-523) and
                   related regulations applicable to public water systems.

                   10. Swamp waters — shall mean  those waters  which have  been
                   exposed  for a substantial period of time to conditions  which cause
                   these waters to  have  all of the following natural characteristics:

                     (a) waters  having those physical/chemical (i.e.  low velocity, low
                   dissolved oxygen, color,  low pH) and biological characteristics found
                                         -76-

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South Carolina
  (con't)
South Dakota
            38
in  waters,  which  have been exposed  for a  substantial time  to
decaying, organic matter;

  (b) waters which  cover land areas much of the year having dense
natural vegetation including trees.

Designation of waters of the State as "swamp waters" will be made
by the Department of Health and Environmental Control on a case-
by-case basis after appropriate analysis.

11. Tidal salt waters -- shall mean those waters  whose elevation is
subject to periodic changes  due to  oceanic tides  and which  have
chloride  ion  content in excess  of 250  milligrams  per liter (mg/1)
fealinity = 0.48 o/oo).

(1)  "Administrator" the administrator  of  the U.S.  Environmental
Protection Agency:

  (1A)    "Ammonia  Toxicity,"  Ammonia  Toxicity  by William  T.
Willingham,  Control  Technology  Branch,  Water   Division,  U.S.
Environmental Protection Agency, Region VIII, (February, 1976) 4

(2) "Bioassay test" any test in which organisms are used to detect or
measure  the  presence or  effect  of one  or  more  substances  or
conditions

(3) "Degree C" degrees centigrade, a measure of temperature

(4) "Cold water marginal fish life propagation" a type  of beneficial use
assigned  to waters  which  are suitable  for supporting stockings  of
catchable size trout during portions of the year, but due to low flows,
siltation, and warm temperature, are not suitable for permanent cold
water fish population

(5) "Cold water permanent fish life propagation" a type of beneficial
use assigned  to waters  which are capable of supporting a permanent
trout fishery from natural reproduction of fingerling stocking

(6)  "Commerce and industry" a  type  of beneficial  use assigned  to
waters which are suitable for use as cooling water, industrial process
water, navigation, and production of hydroelectric  power

(7) "Criteria"  a numerical value  which defines  the acceptable limits
of a parameter

(8)  "Domestic water supply" a  type  of beneficial  use assigned  to
waters which  are suitable for human consumption, culinary or  food
processing purposes, and other  household  purposes  after suitable
treatment by conventional processes

(9) "Eight hour composited sample" a sample composed of eight grab
samples taken at  one  hour  intervals, the  volume  of each  sample
proportioned to flow, and physically mixed prior to analysis
                                        -77-

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South Dakota       (10) "E.P.A. methods" Methods  for Chemical Analysis of Waters and
  (con't)            Wastes, 1971,  Environmental Protection Agency,  analytical quality
                   control laboratory

                   (11) "Degrees F" degrees Fahrenheit, a measure of temperature

                   (12) "Handbook 69" Maximum Permissible Body Burdens and Maximum
                   Permissible Concentrations of Radionuclides in Air and in Water for
                   Occupational Exposure, recommendations of the national committee
                   on radiation protection.  National Bureau of Standards handbook 69
                   (August 1963)

                   (13) "Immersion recreation" a beneficial use  assigned to waters which
                   are suitable for uses where  the human body  may come  in direct
                   contact with the water, to the  point  of complete submersion and
                   where water may be ingested accidentally or certain sensitive organs
                   such as the eyes, ears, and nose may be exposed to it

                   (14) "Irrigation" a beneficial use assigned to waters which are suitable
                   for irrigating farm  lands, ranch lands, gardens and recreational areas

                   (15) "J.C.U.," jackson candle unit, a measure of turbidity

                   (16) "Lake"  a  navigable lake,  pond,  or reservoir,  created by either
                   natural or artificial means, for which there exists a right of public
                   accessor use;

                   (17) "Limited  contact  recreation" a beneficial  use assigned waters
                   which  are  suitable for boating,  fishing and  other water related
                   recreation other than immersion recreation

                   (18) "Median tolerance limit" the concentration of a toxic material or
                   materials which kills fifty percent of bioassay test organisms in ninety-
                   six hours

                   (19) "M.F." membrance filter, a term used to signify that the number
                   of bacteria was determined by means of the mebrane filter technique

                   (20) "mg/1" milligrams per liter, a measure of concentration'

                   (21)  "micromhos/cm"  micromhos per  centimeter,  a measure  of
                   electrical conductivity

                   (22) "Mixing zone"  that volume of water immediately surrounding a
                   discharge which does not  meet  water quality criteria because  of  a
                   lack of mixing of the discharge and stream or lake waters

                   (23) "MPN"  most probably number, a term  used to signify that the
                   number of bacteria was determined by means  of  the multiple-tube
                   fermentation technique

                   (24)  "Parameter" a chemical,  physical  or  biological  characteristic
                   which affects the use of the water
                                        -78-

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South Dakota
  (con't)
Tennessee
         39
(25)   "PCi/1"  picocuries   per  liter,   a   measure  of  radioactive
concentration

(26) "Secretary" the secretary of the South Dakota Department of
Environmental Protection

(27)  "Segment"  a  continuous  stretch  of  water found between  two
points in the bed of a stream

(28) "Spawning bed" any place where fish spawn

(29)  "Standard Methods" Standard Methods for the Examination of
Water and Wastewater, Fourteenth edition, American Public Health
Association et al. (1975)

(30) "Stream" a  navigable river, creek, or tributary of such  river or
creek

(31)  "Twenty-four hour composited  sample" a sample composed of
twenty-four grab samples taken at one hour intervals,  the volume of
each  sample proportioned to  flow, and  physically mixed  prior to
analysis

(32)  "Warm water  marginal  fish life  propagation"  a  beneficial use
assigned to lakes  and streams  which will  support more   tolerant
species  of fish with frequent stocking  and intensive  management but
suffer frequent fish kills because of critical natural conditions

(33) "Warm  water permanent  fish life propagation"  a  beneficial use
assigned to lakes and streams which are suitable for the permanent
maintenance of warm  water fish including  walleyes, black bass, perch,
channel catfish, norther pike, and bluegills

(34)  "Warm water semipermanent fish life propagation waters"  a
beneficial use assigned to  lakes and streams  which  are suitable for
the maintenance of warm water fish but which suffer occasional fish
kills  because of  critical natural conditions.  Species found in these
waters  includes  walleyes, perch,  black  bass, northern pike,  and
channel catfish

(35)  "Wildlife propagation  and  stock watering" a beneficial  use
assigned to streams and lakes which are  satisfactory  as habitat for
aquatic  and semi-aquatic wild animals and fowl and are of  suitable
quality for watering domestic and wild  animals

(a) Conventional Water Treatment — Conventional  water treatment
as referred to  in  the  criteria denotes coagulation, sedimentation,
filtration and chlorination.

(b) Mixing  Zone — Mixing zone refers to that section of  a flowing
stream  or  impounded  waters  necessary for  an effluent to  become
dispersed and mixed insofar as practical with the main flow or  water
                                        -79-

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Tennessee
  (con't)
Texas40

Utah41

Vermont
42
body by appropriate methods at the discharge point. Such zones shall
be restricted to as small an area and length as possible and shall not

  (i) prevent the  free passage of fish or cause aquatic life mortality
in the receiving waters;

  (ii) contain materials, that adequately represent the defined zone,,
in concentrations that  exceed the 96-hour LC50 for biota significant
to the aquatic community in the receiving waters;

  (iii) result in offensive conditions;

  (iv) produce undesirable aquatic life or result  in dominance of  a
nuisance species;

  (v) endanger the public health or welfare; or

  (vi) adversely affect  the reasonable and necessary uses of the area.

The mixing zone necessary in each particular case  may be designated
in the Discharge  Permit as required by the Tennessee Water Quality
Control Act, (T.C.A., Section 70-324 through Section 70-342).

The mixing zone necessary in each particular case shall be defined by
the Tennessee Water Quality Control Board.

Not Specified

Not specified

(1) "Act" means the Vermont Water Pollution Control Act, 10, V.S.A.,
Chapter 47

(2) "Board" means the Vermont Water Resources Board

(3) "Discharge"  means the  placing,  depositing, or emission of  any
wastes, directly or indirectly, into the waters of the State

(4) "Effluent Limitation"  means  any  restrictions  or  prohibitions
estalished on qualities, rates and concentrations  of chemical, phy-
sical, biological  and  other  constituents  which are  discharged  into
waters of the State, including schedules of compliance

(5) "Natural Origin" means that condition which exists in the absence
of any direct or indirect human activity

(6) "Person" means an  individual,  partnership,  public or private
corporation,  municipality, institution,  or  agency  of the  State,  and
includes any officer or governing or managing body of  a partnership,
association, firm  or corporation

(7) "Public  Interest"  means  that  which shall be for  the greatest
benefit to the people of the State as determined by the standards set
forth in Section 1253 (e) of the Act
                                         -80-

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Vermont
  (con't)
,,.  .  . 43
Virginia

Washington
44
(8) "Schedule of Compliance" means  a schedule of remedial measures
including an enforceable sequence of actions or operations leading to
compliance  with  an effluent  limitation,  or any other limitation,
prohibition, or standard, including any water quality standard

(9) "Secretary" means the Secretary of the  Agency of Environmental
Conservation or his duly authorized representative

(10)  "Waste"  means effluent, sewage  or any substance  or material,
liquid, gaseous, solid or radioactive, including heated liquids,  whether
or not harmful or deleterious to waters

(11)  "Waters" shall include all rivers, streams, creeks, brooks, reser-
voirs, ponds, lakes, springs, and all bodies of surface waters, artificial
or natural, which are contained within, flow through or  border  upon
the State or any portion thereof.

Not specified

(1) Background  Conditions: The biological, chemical, and  physical
conditions of  a water body, upstream from the point  or nonpoint
source of any discharge under consideration.  Background sampling
location  in an enforcement action  would be upstream  from  other
inflows.  If several discharges to any water  body  exist, and enforce-
ment action is being taken for  possible violations to  the  standards,
background  sampling would be  undertaken  immediately upstream
from each discharge.

(2) Fecal Coliform:  That  portion  of  the  coliform  group which is
present in the intestinal tracts  and feces of  warm-blooded animals a
detected by  the product of acid or  gas  from  lactose  in  suitable
culture  medium within  24 hours at  44.5 degrees plus or  minus 0.2
degrees C.

(3) Mean Detention Time: The time obtained by dividing  a reservoir's
mean annual minimum total storage  by the 30-day ten-year-low-flow
from the reservoir.

(4) Median Value:  That value of a group of measurements that falls
in the middle  when the measurements  are arranged  in order of
magnitude. If the number of measurements is even, the median value
would be the value half-way between the two middle measurements.

(5) Permit: A document issued pursuant to RCW  90.48.160 et seq. or
RCW 90.48.260 or both, specifying the waste treatment and control
requirements and waste  discharge conditions.

(6) pH: The negative logarithm of the hydrogen ion concentration.

(7) Surface Waters of the State: Include lakes, rivers, ponds, streams,
inland  waters,  saltwaters, and  all other surface waters and water
courses within the jurisdiction of the state of Washington.
                                        -81-

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Washington
  (con't)
West Virginia
            45
Wisconsin
         46
(8) Temperature: Temperature expressed in degrees Celsius.

(9)  Turbidity: The  clarity of  water  expressed as  nephelometric
turbidity units (NTU) and measured with a calibrated turbidimeter.

(10) Upwelling: Upwelling is a direct result of wind stress on the sea
surface.  As winds blow  parallel to a coast, the net flow of water is
at an angle of about  45  toward  the sea.   This  flow causes cold
bottom  water to  move upward to replace the warmer surface water
moving offshore.  The cold water is  rich in dissolved nutrients and has
a low dissolved oxygen content.

2.01 "Person,"  "waters,"  "pollution,"  "sewage,"  "industrial waters,"
and "other wastes'1 shall have the same  meaning as defined by the
Code of West Virginia, Chapter 20, Article 5A, Section 2.

2.02 "Natural" or  "naturally occurring" values — shall mean for all of
the waters of the  State:

  (a) Those water  quality  values  which exist  unaffected by — or
unaffected as a consequence of — any water use by any person;

  (b)  Those  water  quality values   which exist  unaffected by  the
discharge, or  direct or indirect deposit of, any solid,  liquid or gaseous
substance by any person.

2.03 Mixing zones:

  (A) Definition — a mixing zone is an area contiguous to a discharge
where receiving water quality may neither meet all quality criteria
nor requirements otherwise applicable to the receiving water.  The
mixing zone is considered as a place  of  mixing  and not as a place
where effluents are treated.

  (B) Management — management  over those waters which receive
waste discharges  must be  addressed to the task of maintaining the
mixing areas in as  small  a volume and area as practicable.   The
geographic limits of  a  mixing zone is complicated  by  both  the
wastewater discharge  and receiving water characteristics and  will
not be  determined except  on  a case-by-case basis or where it  is
necessary to  exercise more stringent controls  over the  receiving
waters in question.

(1)  "Mean tolerance level (TLM)" means the  concentration  of a
substance at which there is a 50 percent mortality rate of bio-assay
test organisms in a stated exposure time.

(2)  "Mixing Zone" means a region in which a discharge of different
characteristics than the receiving water is in transit and progessively
diluted from the source to the receiving system.
                                        -82-

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Wisconsin
  (con't)
Wyoming
        47
(3) "Natural conditions"  means the normal daily and seasonal varia-
tions in  climatic  and  atmospheric  conditions,  and   the  existing
physical and chemical  characteristics  of a water or  the course  in
which it flows.

(4) "Natural temperature"  means the normal existing temperature  of
a surface water including daily and seasonal changes outside the zone
of influence of any artificial inputs.

(5)   "Resource  management"  means  the  application  of   control
techniques to enhance or preserve a surface water in accordance with
statutory provisions and in  the general public interest.

(6) "Sanitary survey" means a thorough investigation and evaluation
of a surface water  including  bacteriological sampling to determine
the extent and cause of any bacterial contamination.

(7)  "Surface waters"  means  all  natural  and artificial named  and
unnamed  lakes and  all naturally  flowing streams within the boun-
daries  of  the  state,  but not including cooling lakes, farm ponds and
facilities  constructed for  the  treatment  of wastewaters (the term
waters as used in this chapter means surface waters).

(8) "Unauthorized concentrations  of  substances" mean  pollutants  or
other chemicals introduced into surface waters without prior permit
or knowledge  of  the  department, but  not including  accidental  or
unintentional spills.

(9) "Best  practicable control technology"  means that level of treat-
ment established by  the department under section 147.04 (2)(a),  Wis.
Stats., for categories and  classes  of  point sources  to be achieved by
not later than July 1, 1977.

(10)  "Best available control technology" means  that level of treat-
ment established by  the department under section 147.04  (2)(b)(l),
Wis.    Stats.,  for  categories  and classes of  point sources  to be
achieved by not later than  July 1, 1983.

a. Best Management Practices - Those practices or combinations  of
practices which are  determined by the Wyoming Continuing Planning
Process, after  problem  assessment, examination of alternative prac-
tices and  appropriate public participation, to the the most practically
effective  (including  technological, economic and institutional consi-
derations) means of preventing or reducing the  quantity or  concen-
tration of wastes discharged to surface waters of the State.

Best management practices are contained within a State certified
water  quality  management plan adopted under Section 208 of the
Federal  Act  in  accordance  with the  State's Continuing Planning
Process.  In certain instances, certified State water quality manage-
ment plans will not  contain specific best management practices but
                                        -83-

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Wyoming           will outline a process to be followed in developing best management
  (con't)            practices for individual activities.

                   b. Biological Water Quality — Refers to the number and type of living
                   organisms existing in a surface water body.

                   c. Chemical  Water  Quality — Refers to  chemical  elements  arid
                   compounds which are found in ionized, complexed  or dissolved states
                   in water (i.e. calcium, sulfate, dissolved oxygen.)

                   d. Cold Water  Fishery  —  A water  body which is managed by  the
                   Wyoming Game and Fish Department primarily for  one or more of the
                   following species: Grayling (Thymallus arcticus): Northern Pike (Esox
                   lucius);  Salmon (Oncorhynchus);  Sauger  (Sitzosterdion  canadense);
                   Trout (Salmo  and Salvelinus);  Walleye (Stizostedion  vitreum);  and
                   Whitefish (Prospium williamsoni).

                   e. Conventional Water  Treatment —  Shall be considered to be, in
                   order  of  application   for  public  water supplies,  the  following
                   processes; coagulation, sedimentation, filtration and chlorination.

                   f. Dissolved Oxygen —  A measure of  the amount of free  oxygen in
                   water.

                   g. Effluent Limitations  — Any restriction established by the State or
                   by  the Administrator  of  the  Federal  Environmental  Protection
                   Agency (EPA) on  quantities, rates and concentrations of  chemical,
                   physical, biological and  other constituents which are discharged from
                   point sources  into  waters of  the  State,  including schedules  of
                   compliance.

                   h. Eutrophic — Waters abundant in nutrients and having high rates of
                   productivity  frequently resulting in  oxygen  depletion  below  the
                   surface layer.

                   i.  Existing  Quality — The established  long-term chemical  and  biolo-
                   gical water quality as of the  date of  promulgation  of these regula-
                   tions  with  recognition  of  the  fact  that  water quality will  tend to
                   fluctuate on a seasonal and year-to-year basis depending upon natural
                   fluctuations in water quality.

                   j.  Fecal Coliform — Those species within the coliform bacteria group
                   which are present in the gut or feces or warm-blooded animals.  The
                   group includes  organisms which are capable of producing gas from
                   lactose broth in a suitable culture medium within 24 hours  at 44.5°C
                   ±2°C.

                   k. Federal Act — The Federal Water Pollution Control Act  and
                   subsequent amendments to that Act.
                                        -84-

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Wyoming           1.  Full Body Contact Recreation -- Any recreational or other surface
  (con't)            water use in which there is prolonged and intimate  contact  with the
                   water  involving considerable risk  of ingesting  water in quantities
                   sufficient to  pose a significant health hazard  (i.e.,  water skiing,
                   swimming).

                   m.   Game  Fish - Bass (Micropterus), Catfish (Ictalurus punctatus),
                   Crappie (Promoxis), Grayling (Thymallus  arcticus),  Ling (Lota lota),
                   Northern Pike (Esox lucius), Perch (Perca flavescens), Salmon (Oncor-
                   hynchus),  Sauger (Stizostedion canadense), Sunfish  (Lepomis), Trout
                   (Salmo and  Salvelinus),  Walleye  (Stizostedion vitreum), and Whitefish
                   (Prospium williamsoni).

                   n. LC50 The "Lethal concentration"  at which fifty percent of the
                   specified test organisms die within the time specified (i.e., the 96
                   hour LC50 means  that at  concentration "x" fifty percent of the test
                   organisms died within 96 hours.)

                   o. Main stem — This term shall mean the  major channel of a river or
                   stream  as  shown  on the  latest and most  detailed  United States
                   Geological Survey  map for the area.

                   p. Milligrams Per Liter (mg/1)  — Milligrams of solute per liter of
                   solution — equivalent to parts per  million*(ppm) in  liquids, assuming
                   unit  density.

                   q. Mixing  Zone —  That  portion of a surface water body within which
                   an effluent becomes thoroughly mixed with the water body.

                   r. Natural Water Quality — That quality of water which would exist
                   without the measurable effects or  measurable influence of man's
                   activities.

                   s. Nephelometric  Turbidity Unit (NTU) — The standard unit used to
                   measure the optical property that  causes light to be scattered and
                   absorbed rather than transmitted in straight lines through water, as
                   measured by a nephelometer.

                   t. Net Oil  and  Grease  — Shall mean the residue  from  an oil  and
                   grease test  conducted in accordance with the liquid-liquid extraction
                   with trichlorotrifluoroethane (freon) test  method found in the latest
                   edition  of  Standard  Methods for  the Examination  of  Water  and
                   Wastewater corrected for elemental sulphur.  The test for elemental
                   sulphur shall be  capable of measurement at a level of 2 milligrams -
                   1.0 milligram.

                   u. Non-Point Source  — Any runoff from  irrigated and non-irrigated
                   lands used  for grazing  and/or crop  production; runoff from  forest
                   lands, construction activities; urban areas, solid and hazardous waste
                   disposal sites and recreational  activities; indirect  discharges from
                   septic tanks and leach  fields; and, other sources and  activities not
                   subject  to regulation under the  National  Pollutant  Discharge Elimi-
                   nation System (NPDES).
                                        -85-

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Wyoming           v. pH — Term used  to  express the intensity  of  acid or alkaline
  (con't)           conditions.  A pH value of 7 at 25°C is neutral, with pH's of less than
                   7 progressively more acid and pH's greater than 7 progressively more
                   basic (alkaline).

                   w. Pico-Curies Per Liter (pCi/1) — A terms describing the_radiation
                   level of  water or solutions.^ A pico-curie is equal to 10    curie,  a
                   curie is defined as 3.7 x 10   disintegrations per second.

                   x. Point Source — Any discernible,  confined and discrete conveyance,
                   including but  not limited to any pipe, ditch, channel, conduit, well,
                   discrete  fissure, container, rolling stock, concentrated animal feeding
                   operation or vessel or other floating craft, from  which pollutants are
                   or may  be  discharged, except  those pollutant  sources  specifically
                   identified as a non-point in these  regulations.

                   y. Salinity —  The total mineral  dissolved constituents,  after  carbo-
                   nates have been converted to oxides, organics have been oxidized and
                   bromine  and iodine have  been converted to chloride.   This  term is
                   often used interchangeably with the term total dissolved solids.

                   z. Secondary  Body Contact Recreation — Any recreational or other
                   surface water use in which contact with water is either incidental or
                   accidental  and  in  which  the  probability  of  ingesting  appreciable
                   quantities of water is  minimal, such as fishing, hunting and commer-
                   cial  and recreational boating.

                   aa. Wyoming Continuing  Planning Process (CPP) — A planning process
                   involving public participation and  political  debate and  including
                   policies,  procedures and  programs that  result in the definition  and
                   implementation of actions that lead to the  prevention, reduction and
                   abatement of all forms of water pollution and for the protection and
                   enhancement  of water uses  in the State of Wyoming.   The CPP is
                   continuous in  time and is designed to respond to changes in  conditions
                   and  attitudes.  Certified and approved State and  areawide  water
                   quality management plans prepared pursuant  to  Section 208 of the
                   Federal  Act describe  elements  of the  CPP and are outputs  of the
                   CPP.  Such plans include but are not limited to the following:

                     (1) Water  quality monitoring requirements and programs;

                     (2) Definition and assessment of water quality problems;

                     (3)  Identification   of   alternative  solutions,  their  costs  and
                   effectiveness;

                     (4) Evaluations of their  social, economic and environmental impact;

                     (5) Best management practices  or procedures and programs for their
                   determination which  lead  to  the control of non-point sources of
                   pollution;
                                         -86-

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Wyoming             (6) Definition of institutional roles, responsibilities and assignments
  (con't)            for planning and implementation activities;

                     (7) Priorities for action;

                     (8) Procedures  for public participation, local government involve-
                   ment, conflict  resolution performance, evaluation,  plan update and
                   formal amendments.

                   bb. State  Program Plan — A report submitted on an annual basis by
                   the State  to the EPA, under the requirements of Section 106 of the
                   Federal Act.   This document outlines  the State's  water  pollution
                   control goals for the ensuing fiscal year.

                   cc. Surface Waters of the State — All permanent and intermittent
                   defined drainages and lakes and reservoirs which are not man-made
                   retention ponds, used for the treatment of municipal, agricultural or
                   industrial  waste; and all other bodies of surface water, either public
                   or private which are wholly or partially within the boundaries of the
                   State.  Nothing in this definition is intended to expand the scope of
                   the Environmental Quality Act, as limited in Wyoming Statutes, Sec.
                   35-ll-1104(c).

                   dd. Toxic  Materials  - Those  materials or combinations of materials
                   including  disease causing agents,  which, after discharge  and  upon
                   exposure,  ingestion,  inhalation or  assimilation  into any  environ-
                   mentally significant  organism,  either directly from the environment
                   or indirectly by ingestion through food chains, will,  on the basis of
                   information available to the Administrator of the EPA, cause death,
                   disease,  behavioral  abnormalities,  cancer,  genetic malfunctions,
                   physiological malfunctions (including malfunctions in reproduction) or
                   physical deformations in such organisms or their offspring.

                   ee. Tributary — Those streams or stream segments which flow into or
                   contribute water to  another stream, stream segment or other water
                   body.

                   ff. Warm  Water Fishery — A  water body which is managed by the
                   Wyoming Game and Fish Department primarily for one or more of the
                   following species: Bass (Micropterus); Catfish (Ictalurus punctatus);
                   Crappie (Pomoxis); Ling (Lota lota); Perch (Perca  flavescens);  and
                   Sunfish (Lepomis).

                   gg. Wyoming Surface  Waters  —  Shall have  the same  meaning as
                   "surface waters of the State" defined in Section 2.cc.

                   hh. Zone of Passage — A continuous water route which joins segments
                   of a surface water  body above and below a mixing zone  without
                   passing through the mixing zone.
                                        -87-

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American Samoa
          48
District of
   Columbia
"Applicant means any  person who has  applied  for  permission to
discharge wastes.

"Grantee"  means  any  person who has  received permission  from
Environmental Quality Commission for such discharges.

"Person" also  includes  any  industry, business, village, district, the
territory, or any department or agency thereof.

"Coastal waters" includes all  oceanic  and estuarine waters within a
12 mile limit of shore.

"Best practicable treatment or control" is that degree of treatment
for municipal or  industrial  wastes found necessary  to  meet the
requirements  of  the  Federal Water  Pollution  Control Act,  as
amended, and to provide  the  water quality required to protect the
classified uses of the receiving water.

"Receiving water" is that  stream, aquifer, or body of water receiving
a discharge in any physical form.

"Standards of  water quality" and  "Water  Quality Standards" are
herein defined to besynonumous with the meaning of "Water  quality
criteria" as defined in  the Federal Water Pollution Control Act, as
amended.

"Primary contact waters for recreational purposes" are those waters
where such actvities as swimming, wading, water skiing, surfing, and
other activities  occur and in  which there is prolonged and intimate
contact with the water  involving considerable risk of ingesting water
in quantities sufficient to  pose a significant health hazard.

Bacteria - A group of test organisms which are used as indicators of
the sanitary quality of the water.  Fecal coliform  bacteria  is the
specific test organism  selected by the District of Columbia for this
purpose. Bacterial concentrations  originate primarily from municipal
waste treatment plants, sanitary and combined sewers, storm drains,
vessels, and agricultural wastes.

Critria  - Measurements  or descriptions of instream  water  quality
used as  guidelines insetting discharge permit effluent limitations.

Degradation  -  A  measurable deterioration  in  receiving  stream
(beyond a  prescribed mixing  zone) of  one or more of the five (5)
constituents  of water  quality for which standards are  designated
herein.

Dissolved Oxygen  (D.O.) - The oxygen dissolved as a gas  in sewage,
water, or other liquid usually expressed in milligrams per liter (mg/1),
parts per million  (ppm),  or percent saturation. Adequate dissolved
oxygen  levels are  necessary  in  waters  to  protect fish  and  other
aquatic life and to  prevent offensive  odors.  Low dissolved oxygen
                                        -88-

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District of
 Columbia (con't)
Guam
concentrations are  generally  due  to excessive organic  solids  dis-
charged as a result of inadequately treated waste (having high BOD);
excessive  algae  growths  may cause  vastly  fluctuating dissolved
oxygen  levels, and  other  factors  such  as temperature  and water
movement have an impact on dissolved oxygen levels.

Interstate Waters - To  the  extent they are within the geographic
boundaries of the  District of Columbia  the following  waters are
interstate waters: Potomac River,  Anacostia River, Rock  Creek, and
Oxon Run.

pH  - The index  of  hydrogen ion activity, used as  an indication of
acidity or alkalinity in waters.  The pH  of most waters ranges from
6.5  to 8.5, and most uses of  water, such as aquatic life propagation,
prosper at these levels.  In most cases, a pH outside this range is due
to discharge of industrial wastes or  decaying organic vegetation.

Pollution - The addition of sewage,  industrial wastes or other harmful
or objectionable material to water at a concentration or in sufficient
quantity to result in  measurable degradation of water quality.

Suspended Solid? - Solids that either float on the surface of, or are in
suspension in water, wastewater,  or other liquids, and  which are
largely  removable  by  laboratory  filtering.   Also referred to as
nonfilterable residue.

Sewage -  (1)  The water supply of a  community after it has been used
and  discharged  into a  sewer, (2) wastewater from the  sanitary
conveniences  of  dwellings, business buildings,   factories  and other
institutions.

Temperature - A measure of the heat content of water. While stream
temperature   is  affected  naturally,  man  significantly  affects it
through the construction and operation of  dams and the discharge of
cooling   waters  from   industrial   processes,   particularly   power
generation.

Toxic Materials  -  Materials which  are harmful  to  human, plant,
animal or aquatic life.   These may include hundreds  of compounds
present  in various  waters such as  industrial  waste discharges or
runoff from where pesticides  have been applied.

"Adversely affect" shall mean damage to the waters of the Territory
that results in any of the following:

  1. substantial increase in abundance or distribution  of any species
not representative of the highest community development  achievable
in receiving waters of comparable quality;

  2. a substantial decrease  of formerly indigenous species;
                                        -89-

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Guam                3. changefe) in community structure to resemble a simpler succes-
  (con't)            sional stage than is natural for the locality and season in question;

                     4. unaesthetic appearance, odor or taste of the waters;

                     5. elimination of an established or potential economic or recrea-
                   tional use of the waters;

                     6. reduction of the successful completion of life cycles of  indige-
                   nousspecies, including those of migratory species; and

                     7. substantial reduction of  community  heterogeneity or  trophic
                   structure.

                   "Aquifer" shall mean  a  water-bearing stratum of  permeable rock,
                   sand, or gravel.

                   "Best pollutant removal or control" shall  mean a  feasible process
                   which, as demonstrated  by general  use, demonstration process or
                   pilot plants represents good engineering practice  at reasonable cost
                   at the time  a discharge permit is issued by the Agency.

                   "Coastal waters" includes "near-shore waters" "off-shore  waters," and
                   "estuaries."

                   "Conservation" means  planned  management of a natural resource to
                   prevent destruction or  neglect.

                   "Direct  rapid  movement" shall  mean  the movement  of effluent
                   through  the soil and underlying rock strata in such a  manner that
                   pollutants which  would adversely impact on the designated  uses of
                   the receiving water are not removed.

                   "Discharger"  shall mean any  person  who  emits any  wastewater,
                   substance, or material into the waters of the  Territory, whether or
                   not such substance causes pollution.

                   "Effluent"   shall   mean  any  point  source  wastewater discharged
                   directly  or  indirectly  to waters  of  the Territory or to any storm
                   sewer, and  the runoff from land  used  for  the disposition of solid
                   wastes, wastewater, or sludges.

                   "Effluent limitation"  shall  mean  any  restriction  or prohibition
                   established  under Territorial  or Federal  Law  including, but  not
                   limited to,  parameters for toxic  and non-toxic discharges, standards
                   of performance for  new sources, or  ocean discharge  criteria.  The
                   restrictions   or  prohibitions  shall  specify quantities,  rates,  and
                   concentrations of chemical, physical, biological, and other  consti-
                   tuents which are discharged to the waters of the Territory.

                   "Equivalent to (secondary treatment)" shall mean that process or
                   group  of processes  achieving  a  maximum  practicable  removal of
                                        -90-

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Guam              solid>, oils, grease, acids, alkalis, toxic materials, bacteria, taste and
  (con't)            odor-causing materials,  color  and any  other  objectionable  consti-
                   tuents contained in untreated wastes to  produce an effluent equal to
                   that obtained from secondary treatment facilities in current  use for
                   any specific category of industrial waste.

                   "Estuary" shall mean that region  of interaction between near-shore
                   waters and rivers within which tidal action and river flow bring about
                   mixing of fresh and salt water.

                   "Higher  degree  of treatment"  shall mean any physical, biological
                   and/or chemical method directed  at removing  a specified portion of
                   the remaining pollutants before and/or after secondary treatment.

                   "Hydrologic cycle" shall mean that natural system dealing with the
                   properties, distribution,  and circulation  of water on  the surface of
                   the land, in the soil and underlying rocks, and in the atmosphere.

                   "Lethal Concentration -  50 percent (LC50)" shall mean that concen-
                   tration of a toxic substance in water in which 50 percent of a  species
                   of aquatic organism survives for a given time period.

                   "Line of Mean High Water" shall mean the shoreline  as  indicated on
                   the  1:24,000  Series  (Topographic) Maps of  the Island  of Guam
                   prepared by the U.S. Geological  Survey.

                   "Marine sanitation device" shall mean any equipment for installation
                   on any vessel or water  craft which is designed to receive,  retain,
                   treat, or discharge sewage or other pollutants or any process to treat
                   such sewage, or other pollutants.

                   "Mixing zone" shall mean the area or volume of a water body within
                   which  effluentfe) shall become  physically mixed with the  receiving
                   waters through initial dilution.  Initial dilution  is the process  through
                   which  the wastewater immediately mixes with the receiving water
                   due to the momentum of the waste discharge and the difference in
                   density between the discharge and the receiving water.  The total area
                   or volume of water designated  as a mixing zone shall be limited to
                   that area or volume which will not interfere with biological commu-
                   nities  or populations  of important species to a degree  which is
                   damaging to the  ecosystem and which  will  not cause substantial
                   damage to or impairment of designated water uses within the mixing
                   zone or in surrounding  waters.   A mixing zone shall be considered
                   designated  only  when   approved  by  the   Guam   Environmental
                   Protection Agency  and when concurrence of the U.S. EPA has been
                   received.

                   "Natural  conditions" shall  mean  conditions free  of substances  or
                   conditions or the  combination of  both attributable to domestic,
                   commercial  and industrial discharges, or  agricultural, construction or
                   other land-use practices.
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Guam              "Near-shore waters"  shall mean all  coastal  waters lying within a
  (con't)            defined reef area;  all coastal waters of a  depth of less than ten
                   fathoms (60 feet) and all  coastal waters greater than 10 fathoms up
                   to 1000 feet off-shore where there is no defined reef area.

                   "New source" shall mean any wastewater sources, the construction of
                   which  is  commenced on or  after  the effective  date   of  these
                   standards.

                   "Off-shore  waters" shall  mean all  coastal waters beyond  the  limits
                   defined for "near-shore water s1' to the Territorial Limit as recognized
                   by International Law.

                   "Permit" shall mean a permit issued pursuant to Section 57045  of the
                   Water Pollution Control Act.

                   "Pollution"  shall  mean the alteration of the physical,  chemical, or
                   biological properties of any  waters of the  Territory which renders
                   said waters harmful or detrimental  for  their most  beneficial uses
                   adversely and unreasonably impair the water quality of the Territory,
                   or which renders said waters hazardous to human health or harmful or
                   detrimental for their most beneficial uses.

                   "Point source" shall mean 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,  or  vessel or other floating
                   craft, from which pollutants are or may be discharged.

                   "Potable water  resources"   shall mean waters of the  Territory
                   actually used or intended  for use for  the purpose of furnishing water
                   for drinking or general domestic use.

                   "Receiving waterfe)" shall mean waterfe) of  the Territory  into which
                   wastes or wastewaters are, or may be, discharged.

                   "Schedule of compliance"  shall mean a schedule of remedial measures
                   and times including an enforceable sequence of actions or  operations
                   leading to  compliance   with  any  control  regulation  or effluent
                   limitation.

                   "Secondary treatment" shall  mean  the following degree of pollutant
                   removal:

                   1. Biochemical oxygen demand (five-day).

                     a. The arithmetic mean  of the values for effluent samples collected
                   in a period of 30 consecutive days shall not exceed 30  mg/1.

                     b. The arithmetic mean  of the values for effluent samples collected
                   in a period of seven consecutive days shall not exceed 45 mg/1.
                                        -92-

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Guam
  (con't)
Puerto Rico
           49
  c. The arithmetic mean of the values for effluent samples collected
in a period of 30 consecutive days shall not exceed 15 percent of the
arithmetic mean of  the values  for  influent samples  collected  at
approximately the same times during the  same  period  (85  percent
removal).

2. Suspended  solids

  a.    The arithmetic  mean of the values for effluent samples
collected in a period of 30 consecutive days shall not exceed 30 mg/1.

  b. The arithmetic mean of the values for effluent samples collected
in a period of seven consecutive days shall not exceed 45 mg/1.

  c. The arithmetic mean of the values for effluent samples collected
in a period of 30 consecutive days shall not exceed 15 percent of the
arithmetic mean of  the values  for  influent samples  collected  at
approximately the same times during the  same  period  (85  percent
removal).

3. Fecal coliform bacteria.

  a. The arithmetic mean of the value for effluent samples collected
in a period of 30 consecutive days shall not exceed 200 per 100 ml.

  b. The arithmetic mean of the values for effluent samples collected
in a period of seven consecutive days shall not exceed 400 per 100 ml.

4. pH.  The effluent values for pH  shall remain within the limits of 6.0
to 9.0.

"Toxic" shall mean lethal, teratogenic or mutagenic, or  otherwise
damaging  to man or other living organisms.

"Wastewater" shall mean sewage, industrial waste, or other waste, or
any combination of these, whether treated  or untreated,  plus any
admixed land runoff.

"Zone  of  passage"  shall  mean a  continuous water route which joins
segments  of  a river, stream, reservoir,  estuary, or channel above,
below, or  around,  a mixing zone without going through the mixing
zone.   As  a minimum no less than one-third  of the cross section  of
the water  body shall be retained in compliance with the water quality
criteria.

Applicable rules and regulations - See  sections 2.1.2.

Bioassay — Analytical tests for evaluating the toxicity of an effluent,
specific  substances  or  combinations of  these, to  representative
aquatic organism, according to the standard procedures established in
the "Biological Field  and Laboratory  Methods  for  Measuring the
                                        -93-

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Puerto Rico        Quality  of  Surface  Water and Effluents,  EPA  July 1973, Pub.  No.
  (con't)            670/4-73-001"  or  by any  other  method  approved  by  EQB,  and
                   expressed  in TLm 96-hours.  The representative organism  is to be
                   used must  be approved by the  Board prior to the examination.

                   Biota — All living organisms within a region

                   Board — The Environmental Quality Board of the Commonwealth of
                   Puerto Rico, as created pursuant to Law No.  9 of June  18, 1970.

                   Coastal  waters — Ocean waters within the jurisdiction of the United
                   States and Puerto Rico, as  established by  Article 8 of the Puerto
                   Rico Federal  Relations Act  of  1917,  as amended,  and  all inland
                   waters which are subject to the ebb and flow  of the tides.

                   Coliform group (Total Coliform)  — All of the aerobic and facultative
                   anaerobic gram-negative, non spore-forming  rod-shaped bacteria tha£
                   ferment lactose broth with gas formation  within 48 hours at 35°C  -
                   0.5° C.

                   Colloidal substances — Minute substances including, but not limited
                   to,  clay or other substances which do not  settle out without the use
                   of a flocculant.

                   Commuities — Populations dominated by one  species or  a specific
                   group of organisms.  The community derives its name from that of the
                   dominant organismfe), such as coral reefs, and including  mangroves
                   and limestone beds.

                   Discontinuity — That zone or transition stratum that separates the
                   hypolimnion from  the epilimnion.

                   Desirable species — Species indigenous to the area.

                   Discharge  (to), Discharge —  The outflow of  waste water from any
                   domestic,  commercial, industrial, agricultural  or any  other source
                   into receiving waters.

                   Dissolved oxygen — The concentration of free oxygen in the water.

                   Domestic wastes — Any liquid, gaseous, or  solid waste or a combi-
                   nation of  all,  from  homes  or  buildings,  generated as a result of
                   satisfying the basic human and animals needs.

                   Effluent — See Discharge

                   Emergency plan  —  The corrective procedure  to be followed in the
                   case of oil or toxic substances spills, or in the case of  damage caused
                   by natural phenomena.

                   Emergency plan  for Puerto  Rico —  Any plan, rule or  regulation
                   adopted by the  Commonwealth  of  Puerto  Rico for  preventing,
                   containing  and countering spills  of  oil or  toxic substances in the
                   waters of Puerto Rico.
                                        -94-

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Puerto Rico        Environmental  Protection  Agency  (EPA) —  The  Environmental
  (con't)            Protection Agency of the United States established pursuant to the
                   Reorganization Plan Number 3 of 1970.

                   Epilimnion — That region of water that extends from the surface to
                   the thermocline.

                   Estuary — That part of the mouth or lower course of a river in which
                   the fresh  water meets the sea water and where the ebb and flow of
                   the tides is felt, constituting an inlet part ocean and part river.

                   Fecal coliform  — The portion  of the coliform group which is present
                   in the  gut  or  the feces of  warm-blooded animals.   It generally
                   includes organisms which are  capable of producing gas  frorr^ lactose
                   broth in a  suitable culture medium within 24 hours at 44.5°C -0.2°C.

                   Final Mixing Zone (FMZ) — That space in the receiving water  body
                   located beyond the  IMZ and  defined  by a discharge  plume, where
                   mixing takes place primarily  because  of the  difference  in concen-
                   trations between the effluent and the receiving water, intermolecular
                   reactions, ambient turbulence  and temperature gradients.  The deve-
                   lopment  and  determination   of said  FMZ shall be reviewed   and
                   approved by the Board subject to the applicable provisions of Article
                   5 of this Regulation.

                   FWPCAA  —The Federal  Water Pollution control Act Amendments of
                   1972.

                   Hypolimnion — That  region of a body of water that extends from the
                   thermocline to the bottom of  the body of water and is removed from
                   surface influence.

                   Industrial  wastes  — Any liquid,  gaseous, or solid waste, or a combi-
                   nation thereof, resulting from any  industrial,  manufacturing,  or
                   commercial process.

                   Initial Mixing Zone  (IMZ) —  That space in a receiving water  body
                   immediately adjacent to an  effluent  discharge  and defined by the
                   discharge  plume,  where  mixing occurs  primarily  because of  the
                   turbulence created by the discharge  exit velocity  and the density
                   differences  between the  effluent and  the receiving water.  Where a
                   single source is responsible for multiple  discharges of effluents  with
                   similar characteristics, a single Initial Mixing Zone will be applicable.
                   The development  and determination of said Initial Mixing Zone shall
                   be reviewed by the  Board subject to the applicable  provisions of
                   Article 5 of the Regulation.

                   Mixing zones — Areas in  a body of water  where the effluent is diluted
                   with the receiving waters.

                   Municipal  wastes  —  Water carrying human and animal wastes from
                   homes, building, industrial establishments and other places alone  or in
                   combination with  industrial wastes.
                                        -95-

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Puerto Rico        Non-persistent Pesticides  — Those pesticides whose initial concen-
  (con't)            tration is reduced to half their value in a period  of less than 96 hours
                   due to hydrolysis and/or bacterial action.

                   Other wastes —  Garbage, residues,  rotten  wood,  sawdust,  filling,
                   lime, ashes, offals, oil  dyes,  acids,  chemical  substances, and any
                   other substance that may pollute or cause pollution of waters.

                   Passageway — A continuous stretch where water characteristics are
                   affected only by the environment in such a manner that the free flow
                   or continuous drifting of biota is always possible.

                   Person — Any juridical  or natural person; any  agency,  department,
                   board,  public or  quasi-public  corporation,  municipality of  the
                   Commonwealth of Puerto  Rico or  its municipalities; any association
                   or group of  persons.

                   Point source  — Any discernable, 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, or vessel  or other floating craft,  from  which
                   pollutants are or  may be discharged.

                   Pollutant — Any substance, refuse or waste capable of polluting the
                   waters.

                   Pollute (to),  Pollution —  Altering the natural  characteristics of a
                   body of  water so as to make it in  any way  harmful or noxious to
                   human health, or to that  of animals, or  plants, or rendering it ill-
                   smelling or impure or altering adversely its physical, chemical, micro-
                   biological or radioactive condition, in such a way as to intefere with
                   the enjoyment of life or property  or  violate  the standards of  purity
                   established  by this Regulation.

                   Primary contact — Any recreation or other use in which there  is
                   prolonged and intimate contact with the water involving  considerable
                   risk of  ingestion in quantities  sufficient to pose a significant health
                   hazard.

                   Refuse — All waste material,  including (but not limited to) garbage,
                   rubbish,  incinerator  residue,  street  sweepings, dead animals,  and
                   animal wastes.

                   Secondary contact — Any recreactional or other use in which contact
                   with the water is either incidental  or accidental  and  in which the
                   probability of ingesting appreciable quantities of water is minimal.

                   Sewage — See municipal wastes.

                   Solid wastes  —  All  refuse  including, but not  limited  to garbage,
                   rubbish,  incinerator  residue,  street  sweepings, dead  animals, and
                   animal wastes.
                                         -96-

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Puerto Rico
  (con't)
Trust Territories
Source  — Any discharge from  a property, real  or personal, which
generates or may generate any water pollutant.

Surface waters — Any natural or artificial water source including all
streams, lakes, ponds, impounding reservoirs, inland watercourses and
waterways, springs, irrigation systems, drainage systems and all other
inland water bodies or accumulated waters.  For  the purpose of this
Regulation the term does not include coastal waters or those subject
to the ebb and flow of tides.

Thermocline — That layer in a body of water where the temperature
difference is greatest per unit depth.  It is the layer in which the
temperature gradient equals or exceeds  1°C per meter.

Water pollutant — See Pollutant

Water pollution  control facilities  or  equipment  —  Any  process,
equipment,  device, and  all appurtenances  thereto, used for  elimi-
nating, reducing, or controlling the discharge of any water pollutant.

Water Quality Standards —  The  designated  water body  uses or
classifications, the  criteria to  protect  those uses, and  the  anti-
degradation statement.

Waters, Waters of Puerto Rico — Coastal or surface waters of Puerto
Rico

Wastewater — See Municipal wastes

Wastewater treatment facilities — See Water pollution control equip-
ment or facilities.

(a) "Near-shore waters" means:

  (1) All coastal waters lying within a defined reef area;

  (2) All coastal waters of a depth of less than ten fathoms (60 feet);

  (3) All coastal waters greater than 10 fathoms up to 1,000 feet off-
shore where there is no defined reef area.

(b)  "Off-shore  waters" means all coastal waters  beyond the limits
defined for "near-shore waters."

(c) "Coastal waters" includes "near-shore waters", "off-shore waters",
and those brackish, fresh and salt waters that are subject to the ebb
and flow of the tide.

(d) "Best practicable  treatment or  control" is defined herein as not
less than:

  (1) Treatment in accordance with  national guidelines for discharge
into off- hore waters   —  provided evaluation  of  water current
                                        -97-

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Trust Territories
  (con't)
Virgin Islands
             H
patterns  demonstrates the effluent will not be brought back to the
beach or near-shore waters;

  (2)  Secondary  treatment for discharge into "near-shore waters"
provided that such discharge will  not  be  made  in areas which are
primary contact waters for recreational purposes or will not be  made
into areas of unique value into which it has been determined no waste
water effluent is acceptable;

  (3) Disinfection comminuter — acceptable only on emergency basis
(period 3-6 months) with special approval  of the  Director of Health
Services  or the Chairman of the Environmental Protection Board.

(e)  "Receiving water"  is that  stream, aquifer,  or body  of  water
receiving a discharge in any physical form.

(f) "Standards of water quality" is herein  defined to be synonymous
with the meaning of "water quality criteria" as defined in the Federal
Water Pollution Control Act, as  amended.

(g)  "Primary  contact  waters for  recreational purposes" are  those
waters  where  such  activities  as  swimming,  wading,  water skiing,
surfing, and other activities occur and in which there is prolonged and
intimate contact with  the water involving  considerable risk  of
ingesting water in  quantities sufficient to pose  a significant health
hazard.

Not Specified
                                                     *U S GOVERNMENT PRINTING OFFICE: 1980 341-082/126
                                        -98-

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               »*»
US Environmental

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United States
Environmental Protection
Agency
Washington DC 20460
Official Business
Penalty for Private Use $300
Postage and
Fees paid
Environmental
Protection
Agency
EPA 335
              Third-Class

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