5101
  TEN
&EPA
United States
Environmental Protection
Agency
Office of Water
Regulations and Standards
Washington, D.C. 20460
                                       July 1980
             Water
Temperature
            810R80102
             Water Quality Standards
             Criteria Digest
             A Compilation
             of State/Federal Criteria

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                 TEMPERATURE
           Water Quality Standards
               Criteria Digest
   A Compilation of State/Federal Criteria
United States Environmental Protection Agency
  Office of Water Regulations and Standards
          Washington, D. C.   20460
                  My
                                              protection
                            230 South Dearborn Street
                            Chicago. Winois  60604

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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 Hater (OCW), 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.

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Temperature standards, which are the subject of this digest, are  set
to control  thermal  pollution, or the amount of heated wastes
discharged into a water body.  Thermal  pollution creates adverse
conditions which can inhibit a balanced aquatic ecosystem by
accelerating the activity of aquatic plants, oxygen solubility  and
depleting mechanisms, and taste and odor.

Quality Criteria for Water, used by EPA in evaluating State
temperature standards, recommends:

Freshwater Aquatic Life

For any time of year, there are two upper limiting temperatures for a
location (based on the important sensitive species found there  at
that time):

1.   One limit consists of a maximum temperature for short exposures
     that is time dependent and is given by the species-specific
     equation:

     Temperature(C)=lb[log-]o(time in minutes)-a]-2 Where:
   a=intercept on the "y" or logarithmic axis of the line fitted  to
     experimental data which are available for some species from
     Appendix II-C.NAS, 1974.
                                 II

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   h=slope of the line fitted to experimental data which are
     available for some species from Appendix II-C, NAS, L(&$.

2.   The second value is a limit on the weekly average temperature
that:
  a. in the cooler months (mid-October to mid-April in the north and
     December to February in the South) will protect against
     mortality of important species if the elevated plume temperature
     is suddenly dropped to the ambient temperature, with the limit
     being the acclimation temperature minus 2C when the lower
     lethal  threshold temperature equals the ambient water
     temperature (in some regions this limitation may also be
     applicable in summer); or

  b. in the warmer months (April through October in the north and
     March through November in the south) is determined by adding to
     the physiological  optimum temperature (usually for growth) a
     factor calculated as one-third of the difference between the
     ultimate upper incipient lethal  temperature and the optimum
     temperature for the most sensitive important species (and -
     apropriate life state) that normally is found at that location
     and time; or

  c. during reproductive seasons (generally April through June and
     September through October in the North and March through May and
     October through November in the south) meets site-specific
     requirements for successful  migration, spawning, egg incubation,
     fry rearing, and other reproductive functions of important
     species.   These local  requirements should supercede all  other
                                 ill

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     requirements when they are applicable; or

  d. is a site-specific limit that is found necessary to  preserve
     normal species diversity or prevent appearance  of  nuisance
     organisms.

Marine Aquatic Life

In order to assure protection of the characteristic  indigenous marine
community of a water body segment from adverse thermal  effects:

1.   the maximum acceptable increase in the weekly average
     temperature due to artificial  sources is 1C(1.8F)  during  all
     seasons of the year, providing the summer maxima are not
     exceeded; and

2.   daily temperature cycles characteristic of the  water body
     segment should not be altered in either amplitude  or frequency.

Summer thermal maxima, which define the upper thermal limits for the
communities of the discharge area, should be established  on a
site-specific basis.  Existing studies suggest the regional limits
expressed in Table 18.
                                 IV

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                              Table 18
                                  Short term
                                  maximum
                      Maximum
                   true day mean *
Sub-tropical Regions  (south of   32.2C  (90F)
Cape Canaveral and Tampa
Pay, Fla., and Hawaii)
                  29.4C (85F)
Cape Hatteras, N.C., to
Cape Canaveral, FT a.
32.2C (90F)     29.4C (85F)
Long Island (south shore)
to Cape Hatteras, N.C
30.6C (87F)     27.8C (82F)
True daily mean = average of 24 hourly temperature readings.

Baseline thermal conditions should be measured at a site where there
is no unnatural  thermal addition from any source, which is in
reasonable proximity to the thermal discharge (within 5 miles) and
which has similar hydrography to that of the receiving waters at the
discharge.
Since water quality standards experience revisions and upgrading from
time to time, following procedures set forth in the Clean Water Act,
individual  enties in this digest may be superceded.  As these
revisions are accomplished and allowing for the States to revise

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their standards accordingly, this digest will be updated  and



reissued.  Recause this publication is not intended for use other



than as a general  information resource, to obtain the latest



information and 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 Regional  Offices.







Induvidual State-adopted criteria follow:
                                   VI

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Alabama:                PWS - a.  The maximum temperature  in  streams,  lakes
                        and reservoirs other than those  in  river  basins
                        listed  in Part b.  hereof shall  not  exceed  90F.

                        b.  The maximum temperatures  in  streams,  lakes  and
                        reservoirs in the  Tennessee and  Cahaba  River Basins
                        and for that portion of the Tallapoosa  River Basin
                        from the tail race  of Thurlow  Dam at Tallassee  down-
                        stream to the junction of the  Coosa and Tallapoosa
                        Rivers which has been designated by the Alabama
                        Department of Conservation and Natural  Resources  as
                        supporting small mouth bass, sauger, and walleye  shall
                        not exceed 86F.

                        c.  The maximum in-stream temperature  rise above
                        ambient water temperature due  to the  addition  of
                        artificial heat by a discharger  shall  not  exceed  5F
                        in streams, lakes  and reservoirs in non-coastal  and
                        non-estuarine areas.

                        d.  The maximum in-stream temperature  rise above
                        ambient water temperature due  to the  addition  of
                        artificial heat by a discharger  shall  not  exceed  4F
                        in coastal or estuarine waters  during  the  period
                        October through May nor shall  the  rise  exceed  1.5F
                        during the period  June through  September.

                        e.  In lakes and reservoirs there  shall be no
                        withdrawals from nor discharge  of  heated waters to
                        the hypolimnion unless it can  be shown  that  such
                        discharge will  be  beneficial  to  water  quality.

                        f.  In all waters  the normal  daily  and  seasonal
                        temperature variations that were present before the
                        addition of artificial heat shall  be maintained,  and
                        there shall be no  thermal  block  to the  migration  of
                        aquatic organisms.

                        g.  Thermal permit limitations  in State discharge
                        permits may be less stringent  than those  required by
                        criteria a. - d. hereof when  a  showing  by  the
                        discharger has been made pursuant to Section 316  of
                        P.L. 92-500 or pursuant to a  study of  an  equal  or
                        more stringent nature required by the State  of
                        Alabama authorized by Table 22,  Section 22-2-9(c),
                        Code of Alabama, 1975, that such limitations will
                        assure the protection and propogation of a balanced,
                        indigenous population of shellfish, fish and
                        wildlife, in and on the body  of  water to which the
                        discharge is made.   Any such demonstration shall  take

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Alabama (Cont'd)
Alaska
into account the interaction of the thermal discharge
component with other pollutants discharged.

Rec. - Same as PWS.

Agri. & Ind. - The maximum temperature rise above
natural temperatures before the addition  of artifi-
cial heat shall not exceed 5F in streams, lakes, and
reservoirs nor shall the maximum water temperature
exceed 90F.

Shell. - Same as PWS.

Ind. Oper. - Same as Agri. & Ind.

F&WL - Same as PWS.

Navigation - Same as Agri. & Ind.

FRESH
                          Water Supply:
                            Drinking/Food Processing
                            Agriculture
                            Aquaculture
                               Shall not exceed  15C.
                               Shall not exceed  30C.
                               Shall not exceed  20C  at  any
                               time.  The following maximum
                               temperatures  shall  not  be
                               exceeded where applicable:
                            Industrial

                          Water Recreation:
                            Primary Contact
                            Secondary Contact
                      Migration Routes - 15C
                      Spawning Routes -  13C
                      Rearing Areas - 15C
                      Egg and Fry  Incubation -  13C
                      For all other waters, the weekly
                      average temperature shall  not  exceed
                      site  specific requirements needed  to
                      preserve normal species diversity  or  to
                      prevent appearance of nuisance
                      organisms.

                             - Shall  not exceed 25C.
                                                  of
  Growth  and Propagation
  Fish, Shellfish,  other
  Aquatic Life,  and Wildlife
  including Water fowl  and
Shall not exceed 30C.
Not applicable.

Shall not exceed 20C at any
time.  The following maximum
temperatures shall not be ex-
ceeded where applicable:

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Alaska (Cont'd)
Furbearers:
                              MARINE

                                Water Supply:
                                  Aquaculture
                                                    Migration Routes - 15C.
                                                    Spawning Routes - 13C.
                                                    Rearing Areas - 15C.
                                                    Egg and Fry  Incubation -  13C.
                                                    For all other waters, the  weekly
                                                    average temperature  shall  not  exceed
                                                    site  specific requirements needed  to
                                                    preserve normal species diversity  or  to
                                                    prevent appearance of nuisance
                                                    organisms.
                     - Shall not cause the weekly  average
                       temperature to increase more than
                       1C.  The maximum  rate of change
                       shall not exceed 0.5C per  hour.
                       Normal daily temperature cycles
                       shall not be altered in amplitude or
                       frequency.
                                  Seafood Processing - Shall  not exceed  15C.

                                  Industrial         - Shall  not exceed  25C.
                                Water Recreation:
                                  Primary Contact
                                  Secondary Contact

                                Growth and Propaga-
                                tion of Fish, Shell-
                                fish, other Aquatic
                                Life, and Wildlife,
                                including Seabirds,
                                Waterfowl and Fur-
                                bearers:

                                Harvesting for Con-
                                sumption of Raw
                                Mollusks or Other
                                Raw Aquatic Life:
                       Not applicable.
                       Not applicable.

                       Shall not cause the weekly  average
                       temperature to increase more than
                       1C.  The maximum  rate of change
                       shall not exceed 0.5C per  hour.
                       Normal daily temperature cycles
                       shall not be altered in amplitude or
                       frequency.

                       Shall not cause the weekly  average
                       temperature to increase more than
                       1C.  The maximum  rate of change
                       shall not exceed 0.5C per  hour.
                       Normal daily temperature cycles
                       shall not be altered in amplitude or
                       frequency.

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Arizona:
93 max; not more than 5F change.

   Cold water fish. - November - March--55F max. - not more than 2F
   change, April - October--70F max. - not more than 2F change.
Arkansas:       Temperature - During any month of the year,  heat  shall  not  be  added
                to any stream in excess of the amount that will elevate  the
                temperature of the water more than 5F, based  upon  the  monthly
                average of the maximum daily temperatures as measured at mid-depth
                or 5 feet, whichever is less.  In lakes and  resevoirs,  the
                temperature shall not be raised more than 3F  above that which
                existed before the addition of heat of artificial origin, based
                upon the averrage of temperatures taken from surface to  bottom,  or
                from surface to thermocl ine, if present.  The  maximum temperature
                due to man-made causes shall not exceed 68F in trout waters,  86 F
                in small mouth bass waters, or 90F in all other waters  except  for
                the following:

                1.  Red River - 93F.
                2.  Kelley Bayou - 91F.
                3.  Bayou Dorcheat - 91F.
                4.  Ouachita River (State line to Remmel Dam)  - 91F.
                5.  Lake Catherine - 93F.
                6.  Bayou Macon - 91F.
                7.  Arkansas River - 93F.
                8.  Dardanelle Reservoir (Segment 3E) - 95F with 5F maximum
                    increase.
                9.  White River  (Mouth to Lock & Dan #1) - 93F.
               10.  Spring River (Mouth to mouth of South Fork) - 93F.
               11.  Little Missouri River (Mouth to mouth of Muddy  Fork) -  93F.
               12.  McKinney Bayou - 93F.

                The temperature  requirements shall not apply to offstream or
                privately-owned  reservoirs constructed primarily  for industrial
                cooling purposes and financed in whole or in part by the entity
                using the lake for cooling purposes.

California:         (The following is condensed from the "California Thermal Water Quality
                    Control Plan for Control of Temperature  in Coastal  and  Interstate
                    Waters and Enclosed Bays and Estuaries.")

                   The standards establish a complex set of  thermal  requirements.  For
                   many categories of receiving waters,  requirements differ between
                   "thermal waste" (herein  "TW," defined as  water used  for  transporting
                   waste heat) and "elevated temperature waste"  (herein  "ETW," defined as
                   any discharge, including thermal waste but  excluding  irrigation return
                   water, which  exceeds the natural temperature of  the  receiving water.

                              1.  Cold interstate waters.  ETW's  are prohibited.

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California (Cont'd)           2.  Warm interstate waters.
                                  A.  TW's with temperature greater than 5F above
                                      receiving water temperature are prohibited.

                                  B.  ETW's shall not raise receiving water
                                      temperature by more than 5.

                                  C.  Colorado River.  Maximum rise 5F in river,
                                      3F in Lake Havasu.  Maximum temperatures:

                                  Jan      60                    Jul    90
                                  Feb      65                     Aug    90
                                  Mar      70                     Sept   90
                                  Apr      75                     Oct    82
                                  May      82                     Nov    72
                                  June     86                     Dec    65

                                  D.  Lost River.  Maximum rise 2 up to 62
                                      maximum temperature.

                              3.  Coastal waters.

                                  A.  Existing discharges.

                                      (1) ETW's must comply with liinitiations
                                          necessary to protect beneficial  uses.

                                  B.  New discharges.

                                      (1) ETW's must be to open ocean away from the
                                          shoreline, dispersion through the
                                          vertical water column.

                                      (2) ETW's away from areas of special
                                          biological significance.

                                      (3) TW's must have a maximum temperature not
                                          exceeding water temperature by more than
                                          20.

                                      (4) ETW's must not increase water temperature
                                          more than 4 at (a) shoreline, (b)
                                          surfaced beyond 1,000 feet from the
                                          discharge system.  Surface limits must be
                                          maintained at least 50% of the tidal
                                          cycle.  Alternate objectives may be
                                          specified if they assure full protection
                                          of the aquatic environment.  (May be

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California (Cont'd)                       specified only with State Board and EPA
                                          concurrence.)

                                      (5) Additional limitations may be  imposed
                                          when necessary to protect the  aquatic
                                          environment.

                              4.  Enclosed bays.

                                  A.  Existing discharges.

                                      (1) ETW's must comply with limitations
                                          necessary to protect beneficial uses.

                                  B.  New discharges.

                                      (1) ETW's must comply with limitations
                                          necessary to protect beneficial uses.
                                          Maximum discharge temperature  must not
                                          exceed receiving water temperature by
                                          more than 20.

                                      (2) TW's with temperature greater  than 4
                                          above receiving water temperature are
                                          prohibited.

                              5.  Estuaries.

                                  A.  Existing discharges.

                                      (1) ETW's:

                                          [a.] Temperature shall not exceed
                                          receiving water temperature by more than
                                          20.

                                          [b.] Must not, individually or combined,
                                          create zone  (receiving water temperatures
                                          more than 1 above  natural) which exceeds
                                          25% of cross-sectional area of main
                                          channel;

                                          [c.] No discharge shall  cause  a surface
                                          water temper ature  rise  greater than 4F
                                          above the natu ral  temperature of the
                                          receiving waters at any  time or place.

                                          [d.] Additional limits necessary to
                                          protect beneficial  uses.

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California (Cont'd)                   (2) TW's must comply with 5A(1) and their
                                          maximum temperature must not exceed 86.

                                  B.  New discharges.

                                      (1) ETW's must comply with 5A(1).

                                      (2) TW's with temperature greater than 4
                                          above receiving water temperature are
                                          prohibited.

                                      (3) Additional limits necessary to protect
                                          beneficial uses.

                              General Provisions.  Standards also contain general
                              provisions which include the following:

                                  1.  Authorization for additional individual
                                      limitations to confine heat dispersion to a
                                      1 1/2 isotherm in a minimal, defined area;

                                  2.  Prohibition of cumulative heat effects in
                                      excess of the standards;

                                  3.  A requirement that the State Board designate
                                      biologically significant areas for special
                                      protection.

                                  4.  Authorization to make exceptions if:

                                      A.  The heat discharge will be beneficial;

                                      B.  Intermittent heat is the least harmful
                                          method of control fouling organisms in
                                          intake and discharge structures;

                                      C.  Compliance would cause a greater
                                          environmental  impact than modification of
                                          the standards, or

                                      D.  Compliance by existing discharges would
                                          not be commensurate with the benefit to
                                          the aquatic environment.

                                      NOTE:  Exceptions will be made only with EPA
                                             concurrence.

                              In addition, the following temperature objectives apply to
                              intrastate surface waters:

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California (Cont'd)
  The natural receiving water temperature  of  intrastate
  waters shall not be altered unless it can be  demonstrated
  to the satisfaction of the Regional Board that  such  altera-
  tion in temperature does not adversely affect beneficial
  uses.

  At no time  or place shall the temperature of  any  COLD  water
  be increased by more than 5F above natural receiving  water
  temperature.

  At no time  or place shall the temperature of  WARM intra-
  waters be increased more than 5F  above  natural receiving
  water temperature.
  Colorado:
Temperature maintains a normal pattern of diurnal  and
seasonal fluctuations and does not change abruptly.  No
warming discharge is permitted in the hypolimnion  of lakes.
Temperature is not increased  above 68F. by any means  other
than natural means, or is temperature increased in streams
and in the epilimnion of lakes or reservoirs more  than 2F.
by any discharge.

Temperature maintains a normal pattern of diurnal  and
seasonal fluctuations and does not change abruptly.  No
warming discharge is permitted in the hypolimnion  of lakes  or
reservoirs.  Temperature is not increased above 90F.  by  any
means other than natural means, or is temperature  increased
by discharges in streams more than 5F., and in the
epilimnion of lakes or reservoirs more than 3F.

Temperature maintains a normal pattern of diurnal  and
seasonal fluctuations and does not change abruptly.  No
warming discharge is permitted in the hypolimnion  of lakes.
Temperature is not increased  above 68F. by any means  other
than natural means, nor is temperature increased  in streams
and in the epilimnoin of lakes or reservoirs more  than 2F.
by any discharge.

Temperature maintains a normal pattern of diurnal  and
seasonal fluctuations and does not change abruptly.  No
warming discharge is permitted in the hypolimnion  of lakes  or
reservoirs.  Temperature is not increased above 90F.  by  any
means other than natural means, or is temperature  increased
by discharges more than 5F.  in streams  and more  than  3F.  in
the epilimnoin of lakes or reservoirs.

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Connecticut:
Delaware:
District of Columbia:
Class A and AA  (PWS) - No  increase  other  than  natural  origin.

Class B (Rec.)  - No increase to exceed  recommended
Class C (F&WL)   limits  on most sensitive water  use,
                 and in  no case to  exceed 4F  over
                 natural with  a max.  of 85F.
                              Class SA  (Shell.)
                              Class SB
                              (Restricted Shell
                              Class SC  (Shell
                  - No increase to exceed  recommended
                    limits on most sensitive  water
                  ) use, and in no case  to  exceed
                    83F or raise normal temp of
                    receiving water more than 4F.
                    During July, Aug., Sept.  normal
                    temp of receiving water shall not
                    be raised more than  1.5F.
General Criteria for all non-tidal portions  of  stream  basir\s
(segments).

Any artificially induced rise  shall  not  exceed  5F
above the seasonal  normal temperature or 85F,
(29C), whichever is less.

Specific criteria for all tidal portions of  basins
except Delaware River and Cheasapeake and Delaware
Canal, but including the Atlantic Ocean  and  Delaware
Bay below RM 48.2 in addition  to general criteria in
9A.  Any repeated indicator/criteria found here
supersedes that of 9A.

Coastal and Estuarine waters:  No heat may be added
except in designated mixing zones which  would cause
temperatures to exceed 85F, or which would  cause the
temperatures to be raised by more than 4F during
September through May, or to be raised by more  than
1.5F during June through August.  The rate  of  tem-
perature change in designated  mixing zones shall not
cause mortality of fish, shellfish,  or their eggs.

Specific criteria for Delaware River (from PA.  - DE.
Line, RM 78.8 to Listen Point  RM 48.2) in addition to
the general criteria of 9A.  Repeated indicator/
criteria here supersedes that  of 9A.

No heat may be added except in designated mixing
zones which would cause temperature  to exceed 86F or
which would cause the temperature to be  raised  more
than 1.5F during June through August.   The  rate of
temperature change in designated mixing  zones shall
not cause mortality of fish or shellfish.

Not to exceed 90F, 5F change limit; no sudden or
localized temperature changes which may  adversely
affect aquatic life.

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Florida:                      (3) All discharges or proposed discharges  of  heated
                              water into receiving bodies of water  (RBW)  which  are
                              controlled by the state  shall be  subjected  to a
                              thorough study to assess the consequences  of  the
                              dishcharge upon the environment.  The  state shall  be
                              divided into two general climatological zones:
                              Peninsular Florida, which  varies  from  tropical  in
                              nature to temperate but  is modified by  the  peninsular
                              configuration and is the area south of  latitude 30N
                              (excluding Gulf and Franklin Counties); and Northern
                              Florida which is temperate and continental  and  is the
                              area above latitude 30N plus the portions  of Gulf
                              and Franklin Counties which lie below 30N.

                                 (a) Heated water discharges existing  on  July 1,
                              1972:
                                 (i) Shall not increase the temperature of the RBW
                              so as to cause damage or harm to  the  aquatic  life or
                              vegetation therein or interfere with  beneficial  uses
                              assigned to the RBW.
                                 (ii) Shall be monitored  by the  discharger to  ensure
                              compliance with this rule, and
                                 (iii) Shall be converted to offstream cooling  or
                              approved alternative methods in the event  such
                              monitoring produces evidence of substantial  damage.
                                 (b) Heated water sources proposed for future  discharges
                              into RBW controlled by  the state  shall  not  increase  the water
                              temperature by more than the monthly  temperature  limits
                              prescribed for the particular type  and  location  of the RBW.
                              New sources shall include  all expansions,  modifications,
                              alterations, replacements  or repairs  which result in  an
                              increase output of ten  percent  (10%)  or more  of  the  level
                              of energy production which existed  on  the  date this  rule
                              became effective.  Water temperatures  shall  be measured by
                              procedures approved by  the Florida Department of  Pollution
                              Control (DPC).  In all  cases where a  temperature  rise above
                              ambient is allowed and  a maximum  RBW  temperature  is  also
                              prescribed, the lower of the two  limitations  shall  be the
                              control temperature.
                                 (c) Definitions.
                                 (i) Ambient (natural)  temperature of  a RBW  is  the
                              existing temperature of the  receiving  water at a
                              location which is unaffected by manmade thermal
                              discharges and a location  which is  also of a  depth
                              and  exposure to winds and  currents  which typify  the
                              most environmentally stable portions  of the RBW.
                                               10

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Florida (Cont'd):               (ii) Coastal waters shall be  all waters  In  the
                              state which are not classified  as fresh waters  or  as
                              open waters.
                                (iii) A cooling pond is  a body  of water  enclosed by
                              natural or constructed restraints which has been
                              approved by the Florida DPC for purposes of control-
                              ling heat dissipation from thermal discharges.
                                (iv) An existing heat source  is any thermal
                              discharge (a) which is presently  taking place,  or  (b)
                              which is under construction or  for which a construc-
                              tion or operating permit has been issued prior  to  the
                              effective date of this rule.
                                (v) Fresh waters shall be all waters of  the state
                              which are contained in lakes and  ponds, or are  in
                              flowing streams above the zone  in which tidal actions
                              influence the salinity of  the water and where the
                              concentration of chloride  ions  is normally less than
                              1500 mg/1.
                                (vi) Open waters shall be all waters in  the state
                              extending seaward from the most seaward 18-foot depth
                              contour line  (three-fathom bottom depth contour)
                              which is offshore from any island; exposed or
                              submerged bar or reef; or mouth of any embayment or
                              estuary which is narrowed by headlands.  Contour
                              lines shall be determined  from  Coast or Geodetic
                              Survey Charts.
                                (vii) The point of discharge  (POO) for a heated
                              water discharge shall be primarily that point at
                              which the effluent physically leaves its carrying
                              conduit (open or closed),  and discharges into the
                              waters of the state, or in the  event it is not
                              practicable to measure temperature at the  end of the
                              discharge conduit, a specific point designated  by  the
                              Florida Department of Pollution Control for that
                              particular thermal discharge.
                                (viii) Heated water discharges  are the effluents
                              from commercial or industrial activities or processes
                              in which water is used for the  purpose of  transport-
                              ing waste heat, and which  constitute heat  sources  of
                              one million British Thermal Units per hour
                              (1,000,000 BTU/HR.), or greater.
                                (d) Monthly and Maximum Temperature Limits
                                (i) Fresh Waters - Heated water with a temperature
                              at the POD more the 5F higher  than the ambient
                              (natural) temperature of any stream shall  not be
                              discharged into such stream.  At  all times under all
                              conditions of stream flow  the discharge temperature
                              shall be controlled so that at  least two-thirds (2/3)
                              of the width  of the stream's surface remains  at
                                                 11

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Florida (Cont'd)              ambient (natural) temperature.  Further, no more than
                              one-fourth (1/4) of the cross-section of the stream
                              at a traverse perpendicular to the flow shall be
                              heated by the discharge.  Heated water with a
                              temperature at the POD more than 3F higher than the
                              ambient (natural) temperature of any lake or
                              reservoir shall not be discharged into such lake or
                              reservoir.  Further no heated water with a tempera-
                              ture above 90F shall be discharged into any fresh
                              waters in Northern Florida regardless of the ambient
                              temperature of the RBW.  In Peninsula Florida, heated
                              waters above 92F shall not be discharged into fresh
                              waters.
                                (ii) Coastal Waters - Heated water with a
                              temperature at the POD more than 2F higher than the
                              ambient (natural) temperature of the RBW shall not be
                              discharged into coastal waters in any zone during the
                              months of June, July, August, and September.  During
                              the remainder of the year, heated water with a
                              temperature at the POD more than 4F higher than the
                              ambient (natural) temperature of the RBW shall not be
                              discharged into coastal waters in any zone.  In
                              addition, during June, July, August, and September,
                              no heated water with a temperature above 92F shall
                              be discharged into coastal waters during the period
                              October thru May.
                                (iii) Open Waters - Heated water with a temperature
                              at POD up to 17F above ambient (natural) temperature
                              of the RBW may be discharged from an open or closed
                              conduit into open waters under the following
                              restraints:  The surface temperature of the RBW shall
                              not be raised to more than 97F and the POD must be
                              sufficient distance offshore to ensure that the
                              adjacent coastal waters are not heated beyond the
                              temperatures permitted in such waters.
                                (iv) Cooling Ponds - The temperature for heated
                              water discharged from a cooling pond shall be
                              measured at the POD from the pond, and the
                              temperature limitation shall be that specified for
                              the RBW.
                                (e) General.
                                (i) Daily seasonal temperature variations that were
                              normal to the RBW before the addition of heat from
                              other than natural causes shall be maintained.
                                (ii) Recapitulation of temperature limitations
                              prescribed above:
                                                 12

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ZONE
NORTH.
PENIN.
STREAMS
90F Max.
AM. +5F
92F Max.
AM. +5F
LAKES
90 F Max.
AM. +3F
92F Max.
AM. +3F
COASTAL
SUMMER
92F Max.
AM. +2F
92F Max.
AM. +2F
REMAINDER
90 F Max.
AM. +4F
90 F Max.
AM. +4F
OPEN
97 F Max.
AM. +15F
97 F Max.
AM. +17F
Georgia:
Guam:
Hawaii:
Idaho:
PWS -  Not to exced 90.0 at any time and not to be
Rec. - increased more than 5F above intake
F&WL - temperature.  In streams designated by the
Shell.-State Fish and Game as trout or Small mouth Bass
waters, there shall be no elevation or depression of natural
stream temperature, except that secondary (put & take) Trout
waters can be elevated 2F maximum above natural  stream
temperature.

       In estuarine waters, the increase will not be
       more than 1.5F.

PWS - 85F max., 5F change limit, 1.5F hourly
      change limit.
Rec. - 85F.

F&WL - 1.5F change limit from natural  conditions.

Classes AA, A, B, 1 and 2 (all  uses of coastal and tidal
waters) - Temperature of receiving waters shall not change
more than 1.5F from natural conditions.

Warm Water Biota - Water temperatures of 33C or less with  a
maximum daily average not greater than 29C.

Cold Water Biota - Water temperatures of 22C or less with  a
maximum daily average of no greater than 19C.

Salmonid Spawning - Water temperatures of 13C or less with a
maximum daily average no greater than 9C.

The wastewater must not affect the receiving water outside
the mixing zone so that:

(1) The temperature of the receiving water or of downstream
    waters will  interfere with designated uses.

(2) Daily and seasonal  temperature cycles characteristic of
    the water body are not maintained.

(3) If the water is designated for warm water biota, the in-
    duced variation is more than +2C.
                                                  13

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Idaho (Cont'd)
Illinois:
(4) If the water is designated for cold water  biota  or salmonid
    spawning, the induced variation is more than     +1C.

Temperature [STORE! number  (f) 00011 and  (C) 00010]:

(1) There shall be no abnormal temperature changes that
    may adversely affect aquatic  life unless caused  by
    natural  conditions.

(2) The normal daily and seasonal temperature  fluctua-
    tions that existed before addition of  heat due to
    other than natural causes shall be maintained.

(3) The maximum temperature  rise  above natural tempera-
    tures shall not exceed 5F.

(4) In addition, the water temperature at  representative
    locations  in the main river  shall not  exceed  the
    maximum limits in the following table  during  more
    than one  percent of the  hours in the 12-month period
    ending with any month.   Moreover, at no time  shall
    the water  temperature at such locations exceed the
    maximum limits in the following table  by more than
    3F.
                                              14

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                 JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEPT. OCT. NOV. DEC.
Mississippi
River (Wise.
Border to
Iowa Border)
                 45  45  57  68  78 85  86  86   85  75  65  52'
Mississippi
River (Iowa
Border to Alton  45  45  57  68  78 86  88  88
Lock and Dam)
                                                         86  75  65  52
Mississippi
River (South
of Alton Lock    50  50  60  70  80 87  89  89
and Dam) (F)
                                                         87  78  70  57
Ohio River (F)  50  50  60  70  80 87  89  89   87  78  70  57
Wabash River &
Its Interstate   50  50  60  70  80 90  90  90
Tributaries (F)
                                                         90  78  70  57
Other Waters     60  60  60  90  90 90  90  90   90  90  90  60
                        Main River temperatures are temperatures of those
                        portions of the river essentially similar to and
                        following the same thermal regime as the temperatures
                        of the main flow of the river.

                    (5) The owner or operator of source of heated effluent
                        which discharges 0.5 billion British thermal units
                        per hour or more shall  demonstrate in a hearing
                        before this Board not less than 5 nor more than 6
                        years after the effective date of these regulations
                        or, in the case of new sources, after the commence-
                        ment of operation, that dischrges from that source
                        have not caused and cannot be reasonably expected to
                        cause significant ecological  damage to the receiving
                        waters.  If such proof is not made to the satisfac-
                        tion of the Board appropriate corrective measures
                        shall  be ordered to be taken within a reasonable time
                        as determined by the Board.
                                      15

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Illinois (Cont'd)             have not caused and  cannot  be  reasonably expected to
                              cause significant ecological damage  to  the  receiving
                              waters.  If such  proof  is  not  made  to  the satisfac-
                              tion of the Board appropriate  corrective measures
                              shall be ordered  to  be  taken within  a  reasonable time
                              as determined by  the Board.

                          (6) Permits for heated effluent discharges,  whether
                              issued by the Board  or  the  Environmental Protection
                              Agency, shall be  subject to revision in  the event
                              that reasonable future  development  creates  a need for
                              real location of the  assimilative  capacity of the
                              receiving stream  as  defined in the  regulation above.

                          (7) The owner or operator of a  source of heated effluent
                              shall maintain such  records and conduct  such studies
                              of the effluents  from such  source and  of their
                              effects as may be required  by  the Environmental
                              Protection Agency or in any permit  granted  under the
                              Environmental Protection Act.

                          (8) Appropriate corrective  measures will  be  reqiured if,
                              upon complaint filed in accordance  with  Board rules,
                              it is found at any tim  that any heated  effluent
                              causes significant ecological  damage to  the receiving
                              stream.

                          (9) Deleted.

                         (10) All effluents to  an  artificial  cooling  lake must
                              comply with the applicable  provisions  of the thermal
                              water quality standards set forth in Rule 203(i),
                              except when all of the  following  requirements are
                              met:

                              (aa) All discharges  from artificial  cooling lake to
                                   other waters of the State comply  with  the appli-
                                   cable provisions of Rule  203(i)(l-4).

                              (bb) The heated effluent disahrged  to  the artificial
                                   cooling lake complies  with all  other applicable
                                   provisions of this Chapter,  except  Rule 203(i)
                                   (1-4).

                              (cc) At an adjudicative hearing,  the discharger shall
                                   satisfactorily  demonstrateto the  Board that the
                                   artificial cooling lake  receiving  the  heated
                                   effluent will be environmentally  acceptable, and
                                   within the intent  of  the  Act,  including, but not
                                   limited to:

                                   (1) provision of conditons capable of  supporting
                                       shellfish,  fish,  and  wildlife,  and recrea-
                                   16

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Illinois (Cont'd)                      tional uses consistent  with  good  management
                                       practices, and

                                   (2) control of the thermal  component  of the dis-
                                       charger's effluent  by a  technologically fea-
                                       sible  and economically  reasonable method.

                              (dd) The required showing  in Rule 203(i)(10)(cc) may
                                   take the  form of an acceptable  final  environmen-
                                   tal impact statement  or pertinent  provisions of
                                   environmental assessments used  inthe  preparation
                                   of the final environmental  impact  statement, or
                                   may take  the form of  a  showing  purusant to
                                   316(a) of the FWPCA, which  addresses the
                                   requirements of Rule  203(i)(10)(cc).

                              (ee) If an adequate showing  as provided  in Rule
                                   203(i)(10)(cc) is found, the Board  shall  promul-
                                   gate specific thermal standards  to  be applied  to
                                   the discharge to that artificial  cooling lake.

                         (11) Exceptions to  Rule 203(1):

                              (aa) Lake Clinton:
                                   The thermal discharge to Lake Clinton shall meet
                                   the following standards and  conditions:

                                   (1) The effluent temperature shall  not exceed
                                       96F.

                                   (2) All conditions adopted  by Board Order in PCB
                                       75-31  (July 31, 1975).

                              (bb) Lake Sangchris:
                                   The thermal discharge to Lake Sangchris shall
                                   meet the  following standards and  conditions:

                                   (1) The effluent temperature shall  not exceed
                                       99F  during more  than seven'(7) percent of
                                       the hours in the  12-month period  ending with
                                       any month and shall  at  no time  exceed 111F.

                              (cc) Lake Michigan:

                       Temperature (STORET numbers - (F)  00011 and  (C) 00010):

                                   (1) (A) All sources of  heated effluents in
                                           existence as  of January!, 1971 shall
                                           meet the following  restrictions outside
                                           of a mixing zone which  shall  be no
                                           greater than  a  circle with a  radius of
                                           1,000 feet or an equal  fixed  area of
                                           simple form.
                                     17

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Illinois (Cont'd)                           (i) There  shall  be  no  abnormal  tempera-
                                               ture changes  that  may  affect  aquatic
                                               life.

                                          (ii) The  normal  daily  and  seasonal  tem-
                                               perature  fluctuations  that  exitsted
                                               before the  addition  of heat shall  be
                                               maintained.

                                          (iii) The  maximum temperature rise  at any
                                               time above  natural temperatures
                                               shall  not exceed 3F.   In addition,
                                               the  water temperature  shall  not
                                               exceed the  maximum limits (F)
                                               indicated in  the  following  table:

                                               JAN.      45          JUL.      80
                                               FEB.      45          AUG.      80
                                               MAR.      45          SEPT.    80
                                               APR.      55          OCT.      65
                                               MAY       60          NOV.      60
                                               JUNE      70          DEC.      50

                                        (B) The owner  or  operator  of  a source of
                                            heated effluent  which  discharges  0.5
                                            billion  British  Thermal  Units per hour
                                            (BTU/HR.)  or  more shall  demonstrate in a
                                            hearing  before  this Board  not less  than
                                            five  nor more than  six years  after  the
                                            adoption of this  regulation,  that
                                            discharges from that  source have  not
                                            caused and cannot be  reasonably expected
                                            in the future to  cause significant
                                            ecological  damage to  the  Lake.   If  such
                                            proof is not  made to  the  satisfaction  of
                                            the Board, backfitting of  alternative
                                            cooling  devices  shall  be  accomplished
                                            within a reasonable time as determined
                                            by the Board.

                                        (C) The owner  or  operator  of a source of
                                            heated effluent  shall  maintain  such
                                            records  and conduct such  studies  of the
                                            effluents  froms  uch source and  of their
                                            effects  as may  be required by the En-
                                            vironmental Protection Agency or  in any
                                            permit granted  under  the Environmental
                                            Protection Act.

                                        (D)  Backfitting of  alternative cooling
                                            facilities will  be  required if, upon
                                            complaint  filed in  accordance with  Board
                                            rules, it  is  found  at  any  time  that any
                                      18

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Illinois (Cont'd)                          heated effluent  causes  significant
                                           ecological damage  to  the  Lake.

                                   (2) Any effluent  source  under construction  as  of
                                       January 1, 1971, but not  in operation,  shall
                                       meet all the  requirements of  Section  1  of
                                       this regulation and  in  addition  shall meet
                                       the following  restrictions:

                                       (A) Neither the bottom, the shore,  the
                                           hypolimnion, nor the  thermocline  shall
                                           be affected by any  heated effluent.

                                       (B) No heated  effluent  shall  affect spawning
                                           grounds or fish migration routes.

                                       (C) Discharge  structures  shall  be  so
                                           designed  as to maximize short-term
                                           mixing and thus  to  reduce the  area
                                           significantly raised  in temperature.

                                       (D) No discharge shall  exceed ambient
                                           temperatures by  more  than 20F.

                                       (E) Heated effluents from more than one
                                           source shall not interact.

                                       (F) All reasonable steps  shall  be  taken to
                                           reduce the number  of  organisms  drawn
                                           into or against  the intake.

                                       (G) Cleaning  of condensers  shall be accom-
                                           plished by mechanical devices.   If
                                           chemicals must be  used  to supplement
                                           mechanical devices, the concentration  at
                                           the point  of discharge  shall not  exceed
                                           the 96-hour TLm  for fresh water
                                           organisms.

                                   (3) (A) No source  of heated effluent which  was
                                           not in operation or under construction
                                           as of January 1, 1971,  shall discharge
                                           more than a daily  average of 0.1  billion
                                           BTU/Hr.

                                       (B) Sources of heated  effluents  which
                                           discharge  less than a daily  average of
                                           0.1 billion BTU/Hr. not in operation  or
                                           under construction  as of  January  1,
                                           1971, shall meet all  requirements of
                                           Sections  1 and 2 of this  regulation.

                          Secondary Contact and Indigenous  Aquatic Life Standards
                                           19

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Illinois (Cont'd)       Temperature (STORE! numbers -  (F) 00011 and  (C) 00010)
                        shall not exceed 93F (34C) more than 5% of the time, or
                        100F (37.8C) at any time.

Iowa:                    Warm water fish - 32C maximum, 3C increase in
                        streams and 2C increase in lakes.  lC/hour rate of
                        change limit.

                        The allowable 3C temperature  increase criterion for warm
                        water interior streams, 16.3(3)"f"(l), is based in part on
                        the need to protect fish from  cold shock due to rapid
                        cessation of heat source and resultant return of the
                        receiving stream temperature to natural background
                        temperature.  On low flow streams, in winter, during certain
                        conditions of relatively cold  background stream temperature
                        and relatively warm ambient air and groundwater temperature,
                        certain wastewater treatment plants with relatively constant
                        flow and constant temperature  discharges will cause
                        temperature increases in the receiving stream greater than
                        allowed in 16.3(3)"f"(l).

                        During the period November  1 to March 31, for the purpose  of
                        applying the 3C temperature increase criterion, the minimum
                        protected receiving stream  flow rate below  such discharges
                        may be increased to not more than three times the rate of
                        flow of the discharge, where there is reasonable assurance
                        that the discharge is of such  constant temperature and flow
                        rate and continuous duration as to not constitute a threat of
                        heat cessation and not cause the receiving  stream temperature
                        to vary more than 3C per day.

                        Cold water fish - 20C maximum, 1C /hour maximum rate of
                        change; 2C maximum rise.

                        No heat shall  be added to the  Mississippi River that would
                        cause an increase of more than 3C.  The rate of temperature
                        change shall not exceed 1C per hour.

                        In addition, the water temperature at representative
                        locations in the Mississippi river shall not  exceed
                        the maximum limits in the below table during  more
                        than one percent of the hours  in the 12-month period
                        ending with any month.  Moreover, at no time  shall
                        the water temperature at such  locations exceed the
                        maximum limits in the below table by more than 2C.
                          Zone II--Iowa-Minnesota state line to the Northern
                                   Illinois border  (Mile Point 1534.6)
                          Zone IllNorthern Illinois  border  (Mile  Point
                                    1534.6) to Iowa-Missouri state  line.
                                        20

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Iowa (Cont'd)
Month
Zone II
Zone III
Kansas:
                        January
                        February
                        March
                        April
                        May
                        June
                        July
                        August
                        September
                        October
                        November
                        December
                      4C
                      4C
                     12C
                     18C
                     24 C
                     29 C
                     29 C
                     29 C
                     28 C
                     23C
                     14C
                      9C
                      7C
                      7C
                     14 C
                     20 C
                     26 C
                     29 C
                     30 C
                     30 C
                     29 C
                     24 C
                     18 C
Man-made sources shall  not  elevate  the  temperature of the
receiving water above 90F.   Heat  of  artificial  origin shall
not be added to a  stream  in  excess  of the  amount that will
raise the temperature of  the water  more than  5F above
natural conditions.  The  epilimnoin of  lakes  shall  not be
raised more than 3F above  that  temperature which existed
before the addition of  heat  of artificial  origin.  The normal
daily and seasonal temperature variations  before the addition
of heat due to other than natural  causes  shall  be maintained.
The measurement system  used  in each case  shall  provide for
temperature measurements  which reflect  the temperature
differential induced after  a reasonable mixing  zone.  A zone
of passage for free-swimming and drifting  aquatic biota shall
be provided for the water affected  by each discharge.

Occasional natural thermal  conditions may  exceed the maximum
allowable temperature requirements.  Deviations  from
temperature requirements  as  a result  of waste discharge shall
not be allowed without  special permission.
Kentucky:
Temperature shall not exceed 31.7  degrees  Celsius
(eighty-nine (89) degrees  Fahrenheit);

(1) The normal  daily and seasonal  temperature  fluctuations
that existed before the addition of  heat  due  to other than
natural causes shall be maintained.

(2) The maximum temperature rise other  than the effects of a
mixing zone shall not exceed the natural  temperature by 2.8
degrees Celsius, (five  (5) degrees Fahrenheit), with a
maximum rate of change  not to  exceed  one  (1)  degree Celsius,
(1.8 degrees Fahrenheit),  per  hour.   The  department will
maintain guidelines for maximum daily average  temperatures
based on available data.   The  department  may  determine that
deviations from these guidelines will be  allowed upon the
submission of adequate  supporting  data  on  naturally occurring
                                      21

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     Kentucky (Cont'd)             temperatures for a specific location.  Furthermore,  as  a
                                   guideline, the water temperature for all surface waters   "
                                   should not exceed the maximum  limits shown  in  the  following
                                   table:


                                            Table 1

                                   Stream Maximum Temperature
                                  for Each Month in F and C

           Month                                   F                           C

      January                                      50                           10.0
      February                                     50                           10.0
      March                                        60                           15.6
      April                                        70                           21.1
      May                                          80                           26.7
      June                                         87                           30.6
      July                                         89                           31.7
      August                                       89                           31.7
      September                                    87                           30.6
      October                                      78                           25.6
      November                                     70                           21.1
      December                                     57                           13.9

     The allowable temperature increase  in impounded waters  shall  be  limited  to 1.7 degrees
Celsius, (three (3) degrees Fahrenheit), above the natural seasonal norm.


           Louisiana:              The temperature standards enumerated in  the tables,
                                   in most cases, represent  maximum values  obtained from
                                   existing  data.  However,  in a  few  cases, a limited
                                   number of unusually high  temperatures  in the range of
                                   35-36 have been deleted as  it  is felt  that these
                                   values were recorded during conditions  of
                                   unseasonably high temperatures  and/or  unusually  low
                                   flows or  water levels, and, therefore,  do  not
                                   represent normal maximum  temperatures.

                                   In order  to protect a diversified  warm water biota
                                   including game fish, the  following temperature
                                   criteria  shall apply (except when  natural  conditions
                                   cause the temperature to  be raised above these
                                   limits).

                                   The standard shall consist of  two  parts, a
                                   temperature differential  and a  maximum temperature.
                                   The temperature differential  represents  a  maximum
                                   permissable rise above ambient  conditions.   There
                                   shall be  no addition of artificial  heat  once the
                                   ambient temperature reaches the  maximum temperature
                                   specified in the standards.
                                               22

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Louisiana (Cont'd)            FRESH WATER - Temperature  differential  -

                              1) Maximum of 5F  (2.8C)  rise  above  ambient  streams
                                 and rivers.

                              2) Maximum of 3F  (1.7C)  rise  above  ambient  for
                                 lakes and reservoirs.

                              MAXIMUM TEMPERATURE - 90F  (32C)  except  where
                              otherwise listed in the tables  or  due to  natural
                              conditions.

                              ESTUARINE AND COASTAL WATERS  -  Temperature
                              differential -

                              1) Maximum of 4F  (2.2C)  rise  above  ambient  during
                                 the period October through May.

                              2) Maximum 1.5F (0.83C)  during the  period June
                                 through September.

                              MAXIMUM TEMPERATURE - 95F  (35C)  except  when natural
                              conditions elevate temperature  above  this  level.

                              These temperature  criteria  shall not  apply  to
                              privately owned reservoirs, or  reservoirs  constructed
                              solely for industrial cooling purposes.
      Maine                    Freshwater Thermal Discharges

                                No discharge of  pollutants  shall  cause  the  ambient
                              temperature of any freshwater  body,  as  measured  outside a
                              mixing zone, to be raised more  than  5F or  more  than  3F in
                              the epilimnion of  any  lake  or  pond.   In no  event shall  any
                              discharge cause the temperature of  any  freshwater body to
                              exceed 84F at any point outside  a  mixing zone  established by
                              the board, nor shall  such discharge  cause the temperature of
                              any waters which presently  are  designed as  trout or salmon
                              waters to exceed 68F  at any  point  outside  a  mixing zone
                              established by the board.

                              Tidal Water Thermal Discharges
                                             23

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Maine (Cont'd)
Maryland:
Massachusetts:
  No discharge of pollutants shall cause the monthly  mean  of
the daily maximum ambient temperatures  in  any tidal body of
water, as measured outside the mixing zone, to  be  raised more
than 4F nor more than 1.5F from June  1 to September 1.   In
no event shall any discharge cause the  temperature of any
tidal  waters to exceed 85F at any point outside a mixing
zone established by the board.

Water Contact Recreation and Aquatic Life  - Not greater than
90F,  not greater than 5 above  natural for general aquatic
life and wildlife.

Shellfish Harvesting Waters - Not greater  than 4F above
natural  during September through May.

Not greater than 1.5F above natural during June
through August for SHW (Shellfish Harvesting Waters).

Not greater than 68F for NTW (natural  troutwater).

Not greater than 75F for RTW (recreational).
                        Nontidal Waters:
                  Trout waters - not  to  exceed  72 F
                  other waters - not  to  exceed  93F,
at any time.  All
elevation of temperature not to exceed 20F  or  10F
depending whether the natural water temperature  is
below or above 50F, respectively, with  a maximum of
60F and93F, respectively.

Tidal Waters:  90F max., same temperature change
limit as above with absolute max. temperature of 60F
and 90F.

For all waters not classified for F&WL,  no adverse
temperature change and max. of 100F.

Class A (excellent) No increase except where
                    temperature will  not exceed  the
Class B (Rec. F&WL) recommended limit on the most
                    sensitive receiving  water use and
Class C (F&WL)      in no case exceed 83F in warm  water
                    fish, and 68F in cold water
                    fish, or in any case raise  the
                    normal temperature more  than
                    4F.

All coastal and marine waters - no increase  to  exceed
limits on most sensitive water use.
Michigan
Temperature, general  considerations.
                                      24

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Michigan (Cont'd)                    (1) In  all  waters  of  the  state,  the
                        points of temperature measurement  normally  shall  be in the
                        surface 1 meter, however,  where turbulance,  sinking plumes,
                        discharge inertia or other phenomena  upset  the  natural
                        thermal distribution patterns  of  receiving  waters,
                        temperature measurements  shall be  required  to  identify the
                        spatial characteristics of the thermal  profile.

                                     (2) Monthly maximum temperatures,  based
                        on ninetieth percentile occurrence of natural  water
                        temperatures plus the increase allowed  at the  edge  of
                        the mixing zone and in  part  of long-term physio-
                        logical needs of fish,  may be  exceeded  for  short
                        periods when natural water temperatures  exceed  the
                        ninetieth percentile occurrence.   Temperature
                        increases during these  periods may be permitted by
                        the commission, but in  all  cases  shall  be greater
                        than the natural water  temperature plus  the  increase
                        allowed at the edge of  the mixing  zone.

                                     (3) Natural daily  and  seasonal  tempera-
                        ture fluctuations of the  receiving waters shall be
                        preserved.

                        Temperature, Great Lakes  and connecting  waterways.

                                     (1) The Great  Lakes and connecting  waterways
                        shall not receive a heat  load  which would warm  the  receiving
                        water at the edge of the mixing zone  more than  3  degrees
                        Fahrenheit above the existing  natural  water  temperature.

                                     (2) The Great  Lakes and connecting  water-
                        ways shall not receive  a  heat  load which would  warm
                        the receiving water at  the edge of the  mixing  zone  to
                        temperatures in degrees Fahrenheit higher than  the
                        following monthy maximum temperatures:

                             (a) Lake Michigan  north of a  line  due  west from
                                 the city of Pentwater:

                             JFMAMJJASOND
                             40  40  40  50  55  70  75   75  75   65  60  45

                             (b) Lake Michigan  south of a  line  due  west from
                                 the city of Pentwater:

                             JFMAMJJASOND
                             45  45  45  55  60  70  80  80  80   65  60  50

                             (c) Lake Superior  and the St.  Marya River:

                             JFMAMJJASOND
                             38  35  39  46  53  61  71  74  71   61  49  42
                                       25

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Michigan (Cont'd)            JFMAMJJASOND
                             38  35  39  46  53  61   71   74   71   61   49   42

                             (d) Lake Huron  north  of  a  line  due  east  from
                                 Tawas Point:

                             JFMAMJJASOND
                             40  40  40  50  60  70   75   80   75   65   55   45

                             (e) Lake Huron  south  of  a  line  due  east  from
                                 Tawas Point,  except  Saginaw Bay:

                             JFMAMJJASOND
                             40  40  40  55  60  75   80   80   80   65   55   45

                             (f) Lake Huron, Saginaw  Bay:

                             JFMAMJJASOND
                             45  45  45  60  70  75   80   85   78   65   55   45

                             (g) Lake St. Clair  River:

                             JFMAMJJASOND
                             40  40  40  50  60  70   75   80   75   65   55   50

                             (h) Lake St. Clair:

                             JFMAMJJASOND
                             40  40  45  55  70  75   80   83   80   70   55   45

                             (i) Detroit River:

                             JFMAMJJASOND
                             40  40  45  60  70  75   80   83   80   70   55   45

                             (j) Lake Erie:

                             JFMAMJJASOND
                             45  45  45  60  70  75   80   85   80   70   60   50

                        Temperature:  inland lakes, general  standards.

                        Inland lakes shall not receive  a  heat load which would:

                                     (a) Increase the  temperature of  the
                        thermocline  or hypolimnion or decrease the volume
                        thereof.

                                     (b) Increase the  temperature of  the
                        receiving waters at  the  edge  of  the  mixing zone  more
                                           26

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Michigan (Cont'd)       than 3 degrees Fahrenheit  above  the  existing  natural
                        water temperature.

                                     (c) Increase the  temperature  of the
                        receiving waters at the edge  of  the  mixing zone  to
                        temperatures greater than  the following monthly
                        maximum temperatures:

                             JFMAMJJASOND
                             45  45  50  60  70  75   80  85   80   70   60   50

                        Temperature; inland lakes, anadromous salmonid migrations.

                        Warmwater inland lakes which  serve as principal  migratory
                        routes for anadromous salmonids  shall  not receive a  heat load
                        during periods of migration at such  locations and in a  manner
                        which may adversely affect salmonid  migration or raise  the
                        receiving water temperature at the edge of the mixing zone
                        more than 3  degrees Fahrenheit above the  existing natural
                        water temperature.

                        Impoundments.

                                     (1) River and  stream standards as
                        prescribed by rule 1075 shall  apply  to all
                        impoundments.

                                     (2) The commission shall  determine,  when
                        necessary, whether a body  of  water shall  be
                        considered as an inland lake  or  an impoundmen for the
                        purpose of these rules.  This determination shall  be
                        made partially on the basis of aquatic life resources
                        to be protected.

                        Temperature, rivers and streams.

                                     (1) Rivers and streams naturally  capable
                        of supporting coldwater fish  shall not receive a heat
                        load which would:

                             (a) Increase the temperature  of the  receiving
                                 waters at the edge of the mixing zone more
                                 than 2 degrees Fahrenheit above  the  existing
                                 natural water temperature.

                             (b) Increase the temperature  of the  receiving
                                 waters at the edge of the mixing zone to
                                 temperatures greater than the following
                                 monthly maximum temperatures:
                                          27

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Michigan (Cont'd)
     JFMAMJJASOND
     38  38  43  54  65  68  68  68  63   56  48   40

            (2) Rivers ad streams  naturally  capable
of supporting warmwaterfish shall  not  receive a  heat
load which would warm the receiving water at the edge
of the mixing zone more than 5 degrees Fahrenheit
above the existing natural water temperature.

            (3) Rivers and streams naturally capable
of supporting warmwater fish shall not receive  a heat
load which would warm the receiving water at the edge
of the mixing zone to temperatures greater than  the
following monthly maximum temperatures:

     (a) Rivers and streams north  of a line  between
         Bay City, Midland, Alma,  and  North  Muskegon:

     JFMAMJJASOND
     38  38  41  56  70  80  83  81  74   64  49   39

     (b) Rivers and streams south  of a line  between Bay City,
         Midland, Alma, and North  Muskegon,  except the St.
         Joseph River:

     JFMAMJJASOND
     41  40  50  63  76  84  85  85  79   68  55   43

     (c) St. Joseph River:

     JFMAMJJASOND
     50  50  55  65  75  85  85  85  85   70  60   50

            (4) Non-trout rivers and streams that serve as
principal migratory routes for anadromous sal mom" ds shall  not
receive  a heat load during periods of  migration  at  such
locations and in a manner which may adversely affect  salmonid
migration or raise the receiving water temperature  at  the
edge of  the mixing zone more than  5 degrees  Fahrenheit above
the existing natural water temperature.
                                           28

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Minnesota:              Fisheries and Recreation - Class A - Temperature  -  No
                        material increase.
                        Class B - Temperature - 5F  above  natural  in  streams
                        and 3F above natural in lakes,  based  on  monthly
                        average of the maximum daily temperature,  except  in
                        no case shall it exceed the  daily  average  temperature
                        of 86F.

                        The following temperature criteria  will  be applicable
                        for the Mississippi River from Lake Itasca to the
                        outlet of the Metro Wastewater Treatment  Works in St.
                        Paul in addition to or superceding  the  above.   The
                        weekly average temperature shall not exceed the
                        following temperatures during the  specified months:

                        January      40F            July         83F
                        February     40F            August        83F
                        March        48F            September     78F
                        April        60F            October      68F
                        May          72F            November      50F
                        June         78F            December      40F

                        For the Mississippi River from Lock and Dam No. 2 at
                        Hastings to the Iowa Border, the weekly  average
                        temperature shall  not exceed the following
                        temperatures during the specified  months:

                        January      40F            July         84F
                        February     40F            August        84F
                        March        54F            September     82F
                        April        65F            October      73F
                        May          75F            November      85F
                        June         84F            December      48F

                        Class C - Temperature - 5F  above  natural  in  streams
                        and 3F above natural in lakes,  based  on  monthly
                        average of the maximum daily temperature  except in
                        no case shall it exceed the  daily  average  temperature
                        of 90F.

                        The following temperature criteria  will  be applicable
                        for the Mississippi River from the  outlet  of  the
                        Metro Wastewater Treatment Works in St. Paul  to Lock
                        and Dam No.2 at Hastings, in addition  to  our
                        superceding the above.  The  weekly  average tempera-
                        ture shall  not exceed the following temperatures
                        during the specified months:
                                       29

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Minnesota (Cont'd)
 Mississippi:
January
February
March
April
May
June
40F
40 F
48 F
60 F
72F
78 F
July
August
September
October
November
December
83 F
83 F
78F
68 F
50F
40 F
Public Water Supply, Recreation,  Fish  & Wildlife

Temperature:  The maximum  temperature  rise  above natural
temperatures before the  addition  of  artificial  heat shall  not
exceed 50F, in streams, lakes  and  reservoirs  nor shall  the
maximum water temperature  exceed  90F., except  that in the
Tennessee River the temperature shall  not  exceed 86F.  In
lakes and reservoirs there shall  be  no withdrawals from or
discharge of heated waters to the hypolimnion  unless it can
be shown that such discharge will  be beneficial  to water
quality.  In all waters  the normal  daily and seasonal
temperature variations that were  present before the addition
of artificial heat shall be maintained.  The discharge of any
heated waste into any  coastal or  estuarine  waters shall  not
raise temperatures more  than 4F.  above natural  during the
period October through May nor  more  than 1.5F.  above natural
for the months June through September.  There  shall be no
thermal block to the migration  of aquatic  organisms.
Requirements for zones of  passage as referenced in Section I
(8) shall apply.  In addition to  the general requirements of
Section I (2), the temperature  shall be measured at a depth
of 5 feet in waters 10 feet or  greater in depth; and for
those waters less than 10  feet  in depth, temperature criteria
will be applied at mid-depth.

In those specific cases  where  natural  conditions elevate the
temperatures in excess of  the  limits expressed herein,
Section I (3) shall apply  on a  case-by-case basis.

Shellfish Harvesting

Temperature:  The discharge of  any heated waste into any
coastal or  estuarine waters shall not raise temperatures more
than 4F above  natural during  the period October through May
nor more than 1.5F. above natural  for the months June
through September.  There  shall be no thermal  block to the
migration of aquatic organisms.  Requirements for zones of
passage as  referenced  in Section I  (i) shall apply.   In
addition to the general  requirements of Section I  (2), the
temperatures shall  be  measured  at a depth of 5 feet in waters
10 feet or  greater  in  depth; and for those waters less than
10 feet in  depth, temperature criteria will be applied as
mid-depth.   In  all waters  the normal daily  and seasonal
temperature variations that were present before the addition
of artificial heat  shall be maintained.

In those  specific  cases  where natural  conditions elevate the
temperatures  in excess of the limits expressed herein,
Section I  (3) shall  apply on a case-by-case basis.
                                        30

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Mississippi (Cont'd)
           mid-depth.  In all waters the  normal  daily  and  seasonal
           temperature variations that were  present  before  the  addition
           of artificial  heat shall be maintained.

           In those specific cases where  natural  conditions elevate  the
           temperatures in excess of the  limits  expressed  herein,
           Section I (3)  shall apply on a case-by-case  basis.
Missouri:
Beyond the mixing zones, effluents shall  not elevate  or  depress  the
temperature of the stream more than 5F.  The  stream  temperature shall
not exceed 90F due to effluents.

           Cold waters - Effluents shall  not elevate  or  depress
           the temperature of the stream  more  than 2F,  nor  cause  the
           temperature to exceed 68F.

           Lakes and reservoirs - no measureable temperature increase
           due to effluents.  More restrictive criteria  may  be  required
           in individual cases, if it can be shown that  significant
           changes in natural biota are resulting.

           For the Mississippi River, Zones 1A and 2,  the  water
           temperature outside the mixing zone shall  not exceed
           the maximum limits indicated in the following table
           during more than one percent of the time in any
           calendar year.  The Zone IB, table  limits  may not be
           exceeded more than five percent of  the time in  a
           calendar year.  At no time shall the river  tempera-
           ture outside of 25% of the cross sectional  area or
           volume of the river exceed the listed limits  by more
           than 3 degrees F.  Zone lA-Des Moines River to  Lock
           and Dam No. 25.  Zone IB-Lock  and Dam No. 25 to Lock
           and Dam No. 26.  Zone 2-Lock and Dam No. 26 to  the
           Missouri-Arkansas state line.
                                           Zone 1A, IB    Zone  2
                              January
                              February
                              March
                              April
                              May
                              June
                              July
                              August
                              September
                              October
                              November
                              December
                           45
                           45
                           57
                           68
                           78
              50
              50
              60
              70
              80
                                           Zone 1A, IB    Zone 2
86
88
88
86
75
65
52
                              (F)
87
89
89
87
78
70
57
                              The Commission will consider granting exceptions  to
                              these limits.  Environmental Protection Agency
                              concurrence will be obtained before an exception  is
                              granted.
                                               31

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Missouri (Contd'):
Montana:
The Commission will consider granting exceptions to
these limits.  Environmental Protection Agency
concurrence will be obtained before an exception is
granted.

A-Closed     No increase above naturally occurring water
             temperature is allowed.

A-Open-D]    A 1F maximum  increase above naturally
             occurring water temperature is allowed within
             the range of 32F to 66F; within the naturally
             occurring range of 66F to 66.5F, no discharge
             is allowed which will cause the water
             temperature to exceed 67 F; and where the
             naturally occurring water temperature is 66.5F
             or greater, the maximum allowable increase in
             water temperature is 0.5F.  A 2F per hour
             maximum decrease below naturally occurring water
             temperature is allowed when the water
             temperature is above 55F, and a 2F maximum
             decrease below naturally occurring water
             temperature is allowed within the range of 55F
             to 32F.

B-D]         A 1F maximum  increase above naturally
             occurring water temperature is allowed within
             the range of 32F to 66F; within the naturally
             occurring range of 66F to 66.5F, no discharge
             is allowed which will cause the water
             temperature to exceed 65F, and where the
             naturally occurring water temperature is 66.5F
             or greater, the maximum allowable increase in
             water temperature is 0.5F.  A 2F per hour
             maximum decrease below naturally occurring water
             temperature is allowed when the water
             temperature is above 55F, and a 2F maximum
             decrease below naturally occurring water
             temperature is allowed within the range of 55F
             to 32F.

             This  applies to all waters in the state
             classified B-D-j except for Prickly Pear Creek
             from  McClellan Creek to the Montana Highway No.
             433 crossing where a 2F maximum  increase above
             naturally occurring water temperature is allowed
             within the range of 32F to 65F; within the
             naturally occurring range of 65F to 66.5F,  no
             discharge is allowed which will cause the water
             temperature to exceed 67Fi and where the
             naturally occurring water temperature is 66.5F
             or greater, the maximum allowable increase in
             water temperature is 0.5F.
                                     32

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Montana (Cont'd):         B-D2         A 1 F maximum increase above naturally
                                       occurring water temperature is allowed within
                                       the range of 32F to 66F; within the natural
                                       occuring range of 66F to 66.5F, no discharge
                                       is allowed which will cause the water
                                       temperature to exceed 67F, where the naturally
                                       occurring water temperature is 66.5F or
                                       greater, the maximum allowable increase in water
                                       temperature is 0.5F.  A 2F per hour maximum
                                       decrease below naturally occurring water
                                       temperature is allowed when the water
                                       temperature is above 55F, and a 2F maximum
                                       decrease below naturally occurring water
                                       temperature is allowed within the range of 55F
                                       to 32F.

                          8-03         A 3F maximum increase above naturally
                                       occurring water temperature is allowed within
                                       the range of 32F to 77F; within the naturally
                                       occurring range of 77F to 79.5F, no thermal
                                       discharge is allowed which will cause the water
                                       temperature to exceed 80F, and where the
                                       naturally occurring water temperature is 79.5F
                                       or greater, the maximum allowable increase in
                                       water temperature is 0.5F.  A 2F per hour
                                       maximum decrease below naturally occurring water
                                       temperature is allowed when the water
                                       temperature is above 55F, and a 2F maximum
                                       decrease below naturally occurring water
                                       temperature is allowed within the range of 55F
                                       to 32F.

                                       This applies to all  waters in the state
                                       classified 8-03, except from the Billings
                                       water supply intake to the water diversion at
                                       Intake, a 3F maximum increase above naturally
                                       occurring water temperature is allowed within
                                       the range of 32F to 79F; within the range of
                                       79F to 81.5F, no thermal discharge is allowed
                                       which will cause the water temperature to exceed
                                       82F, and where the naturally occurring water
                                       temperature is 81.5F or greater, the maximum
                                       allowable increase in water temperature is
                                       0.5F.

                                       From the water diversion at Intake to the North
                                       Dakota  state line, a 3F maximum increase above
                                       naturally occurring water temperature is allowed
                                       within  the range of 32F to 82F; within the
                                       range of 82F to 84.5F, no thermal  discharge is
                                       allowed which will cause the water temperature
                                       to exceed 85F; and where the naturally
                                       occurring water temperature is 84.5F or
                                       greater, the maximum allowable increase in water
                                       temperature is 0.5F.
                                        33

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Montana (Cont'd):       C-D-j         A 1F maximum increase above naturally
                                     occurring water temperature is allowed within
                                     the range of 32F to 66F; within the naturally
                                     occurring range of 66F to 66.5F, no discharge
                                     is allowed which will cause the water
                                     temperature to exceed 67F; and where the
                                     naturally occurring water temperature is 66.5F
                                     or greater, the maximum allowable increase  in
                                     water temperature is 0.5F.  A 2F per hour
                                     maximum decrease below naturally occurring  water
                                     temperature is allowed when the water
                                     temperature is above 55F, and a 2F maximum
                                     decrease below naturally occurring water
                                     temperature is allowed within the range of  55F
                                     to 32F.

                        D-D2         A 1F maximum increase above naturally
                                     occurring water temperature is allowed within
                                     the range of 32F to 66F; within the naturally
                                     occurring range of 66F to 66.5F, no discharge
                                     is allowed which will cause the water
                                     temperature to exceed 67 F; and where the
                                     naturally occurring water temperature is 66.5T
                                     or greater, the maximum allowable increase  in
                                     water temperature is 0.5F.  A 2F per hour is
                                     allowed when the water temperature is above
                                     55F, and a 2F maximum decrease below naturally
                                     occurring water temperature is allowed within
                                     the range of 55F to 32F.

                        E - F        None


Nebraska:               Cold Water Streams - 65F max., 5F change from natural
                        outside the mixing zone.

                        Warm water streams - 90F max., 5F change from natural
                        outside the mixing zone.

                        For impoundments, the epilimnion  shall not be raised
                        more than 3F above that which existed before the addition of
                        heat of artificial origin.  No heated discharges to the
                        hypolimnion recommended unless, justified by special study.

                        Missouri River  (Gavins Point Dam  to Sioux City, Iowa)
                        - 85F max., 4F change from natural.
                                   34

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Nevada:                 Max. summer values - 30C to 20C  (varies  with
                        stream).  Max. winter values - 14C  (varies with  stream).
                        (The most stringent value prevails).

                        A maximum allowable temperature  increase above  receiving
                        water temperatures is given for  each  major stream.   See the
                        State standards for specific limits.

New Hampshire:          Provisional  maximum temperatures recommended  as compatible
                        with the well-being of various species  of  fish  and  their
                        associated biota indigenous to waters of the  Compact area
                        except where specific information  may establish that these
                        temperature figures are not applicable  in  this  region or  its
                        subregions.

                           90F  Growth of largemouth bass  (micropterus salmoides),
                                 blue gill (Lepomis macrochirus) and  black  crappie
                                 (Pomoxis nigromaculatus).

                           84F  Growth of yellow perch  (Perca  flavescens),  white
                                 perch (Roccus americana),  small-mouth  bass
                                 (Micropterus dolomieu), walleye (Stizostedion
                                 vitreum) and sauger (Stizostedion canadense).

                           80F  Spawning and egg development of catfish  (Ictalurus
                                 punctatus), yellow bullhead  (Ictalurus natalis),
                                 brown bullhead (Ictalurus  nebulosus),  chain pickerel
                                 (Esox niger).

                           75F  Spawning and egg development of largemouth  bass
                                 (Micropterus salmoides).
                           68
  F  Spawning and egg development of American  shad  (Alosa
      sapidissima), growth or migration routes  of
      salmonids, growth of northern pike  (Esox  lucius) and
      for egg development of white perch  (Roccus
      americana) and small-mouth bass (Micropterus
      dolomieu).

55F  Spawning and egg development of brook trout
      (Salvelinus fontinalis), brown trout  (Salmo trutta),
      and rainbow trout (Salmo gairdnerii).

48F  Spawning and egg development of lake  trout
      (Salvelinus namaycush), walleye (Stizostedion
      vitreum), northern pike (Esox lucius), sauger
      (Stizostedion canadense), salmon  (Salmo salar) and
      yellow perch (Perca flavescens).
                                   35

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New Jersey:             General Requirements:  Temperature  shall  be  measured  outside
                        of designated heat dissipation  areas  (see Mixing  Zone
                        Digest).  The rate of temperature change  in  designated  heat
                        dissipation areas shall  not  cause mortality  of  fish.

                        FW-1.  Preserve natural  conditions.

                        FW-2.  (PWS) - Trout production - No  change  except 1
                        rise where treated effluents  are discharged.

                        Trout maintenance streams -  68F maximum, 2  rise.
                        Reduction in temperature may  be permitted where it can  be
                        shown that trout will benefit without detriment to other
                        designated uses.

                        Trout maintenance lakes  - No  change unless  shown
                        beneficial.

                        Non-trout - 86F maximum.   (82F max. in  yellow perch or
                        small mouth bass areas.)  Max. change  5  in  streams, 3  in
                        epilimnion of lakes.  Unless  a  study  shows  that a heated
                        discharge into the hypolimnion  or pumping water from  the
                        hypolimnion will be  desirable for designated water use, such
                        practices shall not  be permitted.

                        FW-3.  (F&WL, rec.)  Same as  FW-2.

                        TW-1.  (Tidal:  PWS, shellfish, rec.) Trout
                        maintenance streams  - Same  as FW-2.

                        Non-trout waters - 85F  max.  (82 max.  in yellow
                        perch  areas); max. rise  (measured against monthly
                        mean of daily max. temp.) 4 Sept-May,  1.5  June-Aug.

                        TW-2.  (Secondary rec.,  fish maintenance.)  - 85F.
                        max., max. rise same as  TW-1.

                        TW-3.  (Nav., fish survival  & passage)  -  Same as TW-2.

                        CW-1.  (Ocean near shore: primary rec.,  F&WL) - No
                        direct heat additions.   As  a reult  of any heat  which  may be
                        added  elsewhere, max.  rise  shall  be the  same as TW-1. 80F
                        max.

                        CW-2.  (Ocean beyond CW-1)  - 80  max.,  max.  rise  same as
                        TW-1.

                        Delaware River

                        Zone 1  (non-tidal to head  of tide R.M.  133.4) 87F max., 5F
                        rise.
                                         36

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New Jersey (Cont'd)
New Mexico
New York
Zone 2 (R.M. 133.4 to R.M. 108.4) 86F max., 5F rise.

Zone 3 (R.M. 108.4 to R.M. 95.0) same as Zone 2.

Zone 4 (R.M. 95.0 to R.M. 78.,8) same as Zone 2.

Zone 5 (R.M. 78.2 to R.M. 48.2) 86 max., 4F rise - Sept. -
May, 1.5F rise - June - Aug.

Zone 6 (R.M. 48.2 to R.M. 0.0 ATLANTIC OCEAN) 85F max.,  rise
- same as Zone 5.

Temperature - Maximum temperatures for each stream reach  have
been specified in Part G of these standards.  However, the
introduction of heat by other than natural causes shall not
increase the temperature, as measured from above the point of
introduction, by more than 2.7C (5F) in a stream, or more
than 1.7C (3F) in a lake or reservoir.  In no case will the
introduction of heat be permitted when the maximum
temperature specified for the reach [generally 20C (68F)
for cold water fisheries and 32.2C (90F) for warm water
fisheries] would thereby be exceeded.  These temperature
standards shall not apply to impoundments constructed
offstream for the purpose of heat disposal.  High water
temperatures caused by unusually high ambient air
temperatures or the reasonable operation of irrigation and
aquacultural facilities are not violations of these
standards.

Temperature

Trout Waters - 70F max. within mixing zone, 2F change
June-Sept., 50F max., 5 change Oct-May.

Non-trout Waters - 90F max, within mixing zone, 86F max.,
5F change.

Lakes - 3F rise at surface; temperature rise confined to
epilimnion of stratified lakes, temperature lowering confined
to hypolimnion.

Coastal - 4F change Oct-June, 1.5F change July-Sept.

Estuarine - 90F max. at surface within mixing zone, 83F
max., 4 change, except July-Sept., if temp, naturally more
than 83F then 1.5F rise.

Enclosed Bays - Only naturally occurring temperature changes.
                                     37

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North Carolina          Class A-II (PWS) 5.04F change  limit, maximum of
                        Class B          84.2F for the mountains  and  upper
                        Class C          piedmont, maximum  of 89.6F  for
                                         lower piedmont and  coastal plain.

                                         Trout waters shall  not  exceed 68
                                         and shall not  be increased by  .9F
                                         as a result of the  discharge  of
                                         heated liquids.

                        Class SA  (Shell.)Allowable rise of 1.44F  during
                        Class SB         June, July, and August.   3.96F
                        Class SC         remaining months.

                                         Not to exceed  89.6F due  to  the
                                         discharge of heated effluents.


North Dakota            85F maximum, allowable rise 5F above  natural.

Ohio                    Warmwater Habitat:  (a)  There  shall be  no water
                        temperature changes as a result of  human activity
                        that cause mortality, long-term avoidance, exclusion
                        from habitat, or adversely affect the reproductive
                        success of representative aquatic species, unless
                        caused by natural conditions.

                        (b)  At no time shall water temperature  exceed  a
                        monthly or bi-weekly average, or at  any  time  exceed
                        the daily maximum temperature as indicated in  Table
                        5b through 5j.  The average and daily maximum
                        temperature standard shall apply and be  measured
                        outside of a thermal mixing zone at  any  point  on  a
                        thermal mixing zone boundary as such is  defined  in
                        Rule 3745-1-06(B)(l) and  (2) of the  Ohio Administra-
                        tive Code.

                        Exceptional Warmwater Habitat and Coldwater Habitat:
                        Temperature - At no time shall  the water temperature
                        exceed the temperature which would  occur if there
                        were no temperature change attributable  to man's
                        activities.

                        Seasonal  Warmwater Habitat:  At no  time  shall  the
                        water temperature exceed the daily  maximum
                        temperature as indicated  in Table 5a.
                                        38

-------
Ohio
 (Cont'd)
Table 5a:
Seasonal daily maximum temperatures limitations for Seasonal
Warmwater Habitat.  Shown as Degrees Fahrenheit and Celsius.
          Table 5b:
          Average:
          Daily
          Maximum:
          Average:
          Daily
          Maximum:
                     Month

                     January
                     February
                     March
                     April
                     May
                     June
                     July
                     August
                     September
                     October
                     November
                     December
                                                    Daily Maximum
                                                      70(21,
                                                      70(21.
                                                      75(23.9)
                                                      80(26.7)
                                                      84(28.
                                                      89(31,
                                                      89(31,
                                                      89(31,
                                                      89(31,
                                                      84(28.
                                                      76(24.4)
                                                      70(21.1)
                                                 1)
                                                 1)
                                                 9)
                                                 7)
                                                 7)
                                                 .7)
                                                 7)
                                                 9)
                                   TABLE 5

                                 Temperature

           General Ohio River Basin - includes all waters of  the  state  within
           the boundaries of the Ohio River basin, excluding  those water
           bodies or water body segments as designated  in Table 5c through
           5f, and Table 5a.  Shown as degrees Fahrenheith and Celsius.

           Jan.   Feb.   Mar.   Mar.    Apr.   Apr.   May     May     June
           1-31   1-29   1-15   16-31   1-15   16-30  1-15    16-31   1-15

             47     47     51     54      59     65     67     70       74
           (8.3)  (8.3)  (10.0) (12.2)  (15.0) (18.3) (19.4)  (21.1)   (23.3)
             52     52     56     59      65     70     73      76      80
           (11.1) (11.1) (13.3)  (15.0)   (18.3)  (21.1)  (22.8)  (24.4)   (26.7)

           June   July   Aug.   Sept.   Sept.  Oct.    Oct.    Nov.     Dec.
           16-31  1-31   1-31   1-15    16-30  1-15    16-31   1-30     1-31

             82     82     82     82      73     71     65      60      47
           (27.8) (27.8) (27.8)  (27.8)   (22.8)  (21.7)  (18.3)  (15.6)   (8.3)


             85     85     85     85      78     76     70      65      52
           (29.4) (29.4) (29.4)  (29.4)   (25.6)  (24.4)  (21.1)  (18.3)   (11.1)
                                              39

-------
Ohio      Table 5c:  Lower Great Miami River - Steele Dam  in Dayton  (River  Mile  81.3)
 (Cont'd)            to the confluence with the Ohio River.  Shown as  degrees
                     Fahrenheit and Celsius.

                     Jan.   Feb.   Mar.   Mar.    Apr.   Apr.   May     May     June
                     1-31   1-29   1-15   16-31   1-15   16-30  1-15    16-31   1-15

          Average:     49     49     53     56      59     65     67      70      75
                     (9.4)  (9.4)  (11.9) (13.3)  (15.0) (18.3)  (19.4)  (21.1)   (23.9)

          Daily
          Maximum:     54     54     58     61      68     74     77      79      83
                     (12.2) (12.2) (14.4) (16.1)  (20.0) (23.3)  (25.0)  (26.1)   (28.3)

                     June   July   Aug.   Sept.   Sept.  Oct.   Oct.    Nov.    Dec.
                     16-30  1-31   1-31   1-15    16-30  1-15   16-31   1-30   1-31

          Average:     85     85     85     85      78     71     66      63      49
                     (29.4) (29.4) (29.4) (29.4)  (25.6) (21.7)  (18.9)  (17.2)   (9.4)

          Daily
          Maximum:     89     89     89     89      83     76     71      68      54
                     (31.7) (31.7) (31.7) (31.7)  (28.3) (24.4)  (21.7)  (20.0)   (12.2)

          Table 5d:  Scioto River - Griggs Dam  in Columbus (River Mile 136) to the
                     confluence with the Ohio River.  Shown as  degrees  Fahrenheit and
                     Celsius.
Jan.
1-31
47
(8.3)
Feb.
1-29
47
(8.3)
Mar.
1-15
51
(10.6)
Mar.
16-31
54
(12.2)
Apr.
1-15
59
(15.0)
Apr.
16-30
62
(16.7)
May
1-15
67
(19.4)
May
16-31
72
(22.2)
June
1-15
75
(23.9)
          Average:


          Daily
          Maximum:     52     52     56     59       65      70      75      79      82
                      (11.1)  (11.1)  (13.3)  (15.0)   (18.3)  (21.1)  (23.9)  (26.1)   (27.8)

                     June   July    Aug.    Sept.    Sept.   Oct.    Oct.    Nov.    Dec.
                     16-30  1-31    1-31    1-15     16-30   1-15    16-31   1-30    1-31

          Average:     83     83     83     83       75      71      65      58      47
                      (28.3)  (28.3)  (28.3)  (28.3)   (23.9)  (21.7)  (18.3)  (14.4)   (8.3)

          Daily
          Maximum:     87     87     87     87       80      76      70      63      52
                      (30.6)  (30.6)  (30.6)  (30.6)   (26.7)  (24.4)  (21.1)  (17.2)   (11.1)
                                             40

-------
Ohio      Table 5e:  Hocking River - entire  mainstem.   Shown as degrees Farenheit and
 (Cont'd)            Celsius.

                     Jan.   Feb.   Mar.    Mar.     Apr.    Apr.    May    May     June
                     1-31   1-29   1-15    16-31    1-15    16-30   1-15   16-31   1-15

          Average:     45     45     51      56       59      65      67     70      74
                     (7.2)  (7.2)  (10.6)  (13.3)   (15.0)  (18.3) (19.4)  (21.1)  (23.3)

          Daily
          Maximum:     50     50     56      61       66      70      73     76      80
                     (10.0) (10.0) (13.3)  (16.1)   (18.9)  (21.1) (22.8)  (24.4)  (26.7)

                     June   July   Aug.    Sept.    Sept.   Oct.    Oct.   Nov.    Dec.
                     16-30  1-31   1-31    1-15     16-30   1-15    16-31   1-30    1-31

          Average:     83     83     83      83       77      65      62     58      45
                     (28.3) (28.3) (28.3)  (28.3)   (25.0)  (18.3) (16.7)  (14.4)  (7.2)

          Daily
          Maximum:     87     87     87      87       82      70      67     63      50
                     (30.6) (30.6) (30.6)  (30.6)   (27.8)  (21.1) (19.4)  (17.2)  (10.0)

          Table 5f:  Muskingum River - entire mainstrem.   Shown as degrees Fahrenheit
                     and Celsius.

                     Jan.   Feb.   Mar.    Mar.     Apr.    Apr.    May    May     June
                     1-31   1-29   1-15    16-31    1-15    16-30   1-15   16-31   1-15

          Average:     45     45     53      53       58      65      68     72      76
                     (7.2)  (7.2)  (11.7)  (11.7)   (14.4)  (18.3) (20.0)  (22.2)  (24.4)

          Daily
          Maximum:     50     50     58      58       63      70      74     77      84
                     (10.0) (10.0) (14.4)  (14.4)   (17.2)  (21.1) (23.3)  (25.0)  (28.9)

                     June   July   Aug.    Sept.    Sept.   Oct.    Oct.   Nov.    Dec.
                     16-30  1-31   1-31    1-15     16-30   1-15    16-31   1-30    1-31

          Average:     85     85     85      85       80      73      67     62      47
                     (29.4) (29.4) (29.4)  (29.4)   (26.7)  (22.8) (19.4)  (16.7)  (8.3)

          Daily
          Maximum:     87     87     87      87       80      76      70     63      52
                     (31.7) (31.7) (31.7)  (31.7)   (29.4)  (25.0) (22.2)  (19.4)  (11.1)
                                                  41

-------
Ohio      Table 5g:
 (Cont'd)
          Average:
          Daily
          Maximum:
          Average:
          Daily
          Maximum:
          Table 5h:
          Average:
          Daily
          Maximum:
          Average:
          Daily
          Maximum:
General Lake Erie Basin - includes  all  surface  waters  of the state
within boundaries of the Lake Erie  drainage  basin,  excluding those
water bodies as designated  in Tables 5h  through 5j,  and  Table 5a.
Shown as degrees Fahrenheit and Celsius.
                     Jan.
                     1-31
       Feb.
       1-29
Mar.
1-15
Mar.
16-31
Apr.
1-15
Apr.   May
16-30  1-15
May
16-31
June
1-15
  44     44     48     51       54      60      64      66       72
(6.7)  (6.7)    (8.9)  (10.6)   (12.2)  (15.6)  (17.8)  (18.9)   (22.2)


  49     49     53     56       61      65      69      72       76
 (9.4)  (9.4)  (11.7)  (13.3)   (16.1)  (18.3)  (20.6)  (22.2)   (24.4)

June   July    Aug.    Sept.    Sept.   Oct.    Oct.    Nov.     Dec.
16-30  1-31    1-31    1-15     16-30   1-15    16-31   1-30     1-31

  82     82     82     82       75      67      61      54       44
(27.8) (27.8)  (27.8)  (27.8)   (23.9)  (19.4)  (16.1)  (12.2)   (6.7)


  85     85     85     85       80      72      66      59       49
(29.4) (29.4)  (29.4)  (29.4)   (26.7)  (22.2)  (18.9)  (15.0)    (9.4)

Maumee River - Ohio-Indiana  state  line Maumee River estuary.
Shown as degrees Fahrenheit  Celsius.
                     Jan.
                     1-31
       Feb.
       1-29
Mar.
1-15
Mar.
16-31
Apr.
1-15
Apr.   May
16-30  1-15
May
16-31
June
1-15
  45     45     47      53       58      61      67      70      75
 (7.2)   (7.2)    (8.3)  (11.7)   (14.4)  (16.1)  (19.4)  (21.1)   (23.9)


  50     50     52      58       63      68      72      76      80
 (10.0)  (10.0)  (11.1)  (14.4)   (17.2)  (20.0)  (22.2)  (24.4)   (26.7)

June    July    Aug.    Sept.    Sept.   Oct.    Oct.   -Nov.    Dec.
 16-30   1-31    1-31    1-15     16-30   1-15    16-31   1-30    1-31

  85     85     85      85       80      71      65      58      45
 (29.4)  (29.4)  (29.4)  (29.4)   (26.7)  (21.7)  (18.3)  (14.4)   (7.2)
  89     89     89     89       85      76      70     63      50
 (31.7) "(31.7)  (31.7)  (31.7)   (29.4)  (24.4)  (21.1)  (17.2)  (10.0)
                                        42

-------
Ohio      Table 5i
 (Cont'd)
Maumee Bay - includes all waters of  the  state  known as  Maumee Bay
including the Maumee River estuary and the  estuary portions of all
tributaries entering Maumee Bay to the mean Lake  Erie mean high
water level.  Shown as degrees Fahrenheit and  Celsius.
Average:
Daily
Maximum:
Average:
Daily
Maximum:
Table 5j:
Average:
Daily
Maximum:
Average:
Daily
Average:
Jan.
1-31
47
(8.3)
52
(11.1)
June
16-30
83
(29.3)
87
(30.6)
Feb.
1-29
47
(8.3)
52
(11.1)
July
1-31
83
(28.3)
87
(30.6)
Mar.
1-15
48
(8.
53
(11.
Aug.
1-31
83
(28.
87
(30.
9)
7)
3)
6)
Mar.
16-31
50
(10.0)
54
(12.2)
Sept.
1-15
83
(28.3)
87
(30.6)
Sandusky Bay - includes all
Bay including the Sandusky
of all tributaries entering
high water level. Shown as
Jan.
1-31
47
(8.3)
52
(ll.D
June
16-31
83
(28.3)
87
Feb.
1-29
47
(8.3)
52
(11.1)
July
1-31
83
(28.3)
87
Mar.
1-15
48
(8.
53
(11.
Aug.
1-31
83
(28.
87
9)
7)
3)

Mar.
16-31
50
(10.0)
55
(12.8)
Sept.
1-15
83
(28.3)
87
Apr.
1-15
52
(11.1)
59
(15.0)
Sept.
16-30
75
(23.9)
80
(26.7)
Apr.
16-30
57
(13.9)
63
(17.2)
Oct.
1-15
69
(20.6)
74
(23.3)
May
1-15
61
(16.
66
(18.
1)
9)
Oct.
16-31
64
(17.
69
(20.
8)
6)
May
16-31
65
(18.3)
76
(24.2)
Nov.
1-30
59
(15.0)
64
(17.8)
June
1-15
71
(21.7)
77
(25.0)
Dec.
1-31
47
(8.3)
52
(11.1)
waters of the state known as Sandusky
River estuary and the estuary portions
Sandusky Bay to the Lake Erie mean
degrees Fahrenheit and Celsius.
Apr.
1-15
52
(H.l)
57
(13.9)
Sept.
16-30
75
(23.9)
80
Apr.
16-30
57
(13.9)
62
(16.7)
Oct.
1-15
69
(20.6)
74
May
1-15
63
(17.
68
(20.
2)
0)
Oct.
16-31
64
(17.
69
8)

May
16-31
68
(20.0)
73
(22.8)
Nov.
1-30
59
(15.0)
64
June
1-15
74
(23.3)
79
(26.1)
Dec.
1-31
47
(8.3)
52
                     (30.6)  (30.6)  (30.6)  (30.6)   (26.7)  (23.3)  (20.6)  (17.8)   (11.1)

-------
Ohio      Table 1:  Daily average temperatures of  thermal  mixing  zones  at  corresponding
 (Cont'd)           ambient temperatures as required  in  Section  (B)(l)  of  this  rule.
                    Shown as degrees Fahrenheit  and Celsius.

          Ambient-            Daily Average        Ambient-         Daily Average
                            Temperature-F(C)     F(C)        Temperature-F(C)
32(0)
33(0.6)
34(1.1)
35(1.7)
36(2.2)
37(2.8)
38(3.3)
39(3.9)
40(4.4)
41(5.0)
42(5.6)
43(6.1)
44(6.7)
45(7.2)
46(7.8)
47(8.3)
LAKE ERIE
50(10.0)
50(10.0)
50(10.0)
50(10.6)
52(11.1)
54(12.2)
55(12.8)
57(13.9)
58(14.4)
60(15.6)
62(16.7)
63(17.2)
65(18.3)
66(18.9)
68(20.0)
70(21.1)
Temperature:
48(8.9)
49(9.4)
50(10.0)
51(10.6)
51(11.1)
53(11.7)
54(12.2)
55(12.8)
56(13.3)
57(13.9)
58(14.4)
71(21.7)
73(22.8)
75(23.9)
76(24.4)
78(25.6)
79(26.1)
81(27.2)
83(28.3)
85(29.4)
86(30.0)
88(31.1)
59(15) and above - daily
average limit will be determined
on a case-by-case basis pursuant
to Rule 3745-l-06(B)(l) and (2)


(a) There shall be no


water temperatu
                                changes  as  a  result  of human activity that cause
                                mortality,  long-term avoidance,  exclusion from habitat,
                                or  adversely  affect  the reproductive success of repre-
                                sentative  aquatic  species,  unless caused by natural
                                conditions.

                                (b) At  no  time  shall  water  temperature exceed a monthly
                                or  bi-weekly  average,  or at any  time exceed the daily
                                maximum temperature  as indicated in Table 7a and 7b.
                                The average and  daily  maximum temperature standards
                                shall  apply and  be measured outside of a thermal mixing
                                zone  at  any point  on a thermal mixing boundary at
                                           44

-------
Ohio
 (Cont'd)
          Table 7a:
          Average:
          Daily
          Maximum:
          Average:
          Dai ly
          Maximum:
          Table 7b:
          Average:
          Daily
          Average:
           depths greater than three feet, as defined  in Rule
           3745-l-ll(B)(2)(a) and (b) of the Ohio Administrative
           Code.

           (c) The temperature of the hypolimnetic waters  of Lake
           Erie shall not exceed at any time a daily maximum as
           indicated in Table 7c.

Lake Erie Western Basin - includes the area of Lake Erie west  of  a
line drawn from Pelee Point, Canada to Scott Point on  Catawba
Island.  Shown as degrees Fahrenheit and Celsius.
Jan.
1-31
35
(1.7)
June
16-30
Feb.
1-29
38
(3.3)
July
1-31
Mar.
1-15
39
(3.9)
Aug.
1-31
Mar.
16-31
45
(7.2)
Sept.
1-15
                                                  Apr.
                                                  1-15
                                    Apr.   May
                                    16-30  1-15
                    May
                    16-31
        June
        1-15
                                      53     59     65       75
                                     (11.7)  (15.0)  (18.3)   (23.9)
                               51     56     64     72       78
                             (10.6)  (13.3)  (17.8)  (22.2)   (25.6)
                                                  Sept.
                                                  16-30
                                    Oct.
                                    1-15
             Oct.
             16-31
Nov.
1-30
Dec.
1-31
  80     83     83     78      76     66     60     53
(26.7) (28.3) (28.3) (25.6)  (24.4)  (18.9)  (15.6)  (11.7)


  83     85     85     83      81     71     65     58      46
(28.3) (29.4) (29.4) (28.3)  (27.2)  (21.7)  (18.3)  (14.4)    (7.8)

Lake Erie Central Basin - includes the area of Lake Erie  east of  a
line drawn from Pelee Point, Canada  to Scott Point on Catawba
Island to the Pennsylvania-Ohio state line.  Shown as degrees
Fahrenheit and Celsius.
Jan.
1-31
-
Feb.
1-29
-
Mar.
1-15
-
Mar.
16-31
-
Apr.
1-15
43
(6.1)
Apr.
16-30
53
(11.7)
May
1-15
59
(15.0)
May
16-31
63
(17.2)
June
1-15
75
(23.9)
  35     38     39     45
 (1.7)  (3.3)  (3.9)  (7.2)
 48     56     63     72      78
(8.9)  (13.3)  (17.2)  (22.2)  (25.6)
                                           45

-------
Ohio                 June   July   Aug.   Sept.   Sept.  Oct.   Oct.    Nov.     Dec.
 (Cont'd)            16-30  1-31   1-31   1-15    16-30  1-15   16-31   1-30     1-31

          Average:     80     83     83     76      71     66     58      48
                     (26.7) (28.3) (28.3) (24.4)  (21.7) (18.9) (14.4)   (8.9)

          Daily
          Maximum:     83     85     85     81      76     71     63      53       46
                     (28.3) (29.4) (29.4) (27.2)  (24.4) (21.7) (17.2)  (11.7)    (7.8)

          Table 7c:  Seasonal  daily maximum temperature  limitations for the  hypolim-
                     netic regions of Lake Erie.  Shown  as degrees  fahrenheit  and
                     celcius.

                                                  Month             Daily Maximum

                                                  January            44 (6.7)

                                                  February           44 (6.7)

                                                  March              44 (6.7)

                                                  April              47 (8.3)

                                                  May                51 (10.6)

                                                  June               54 (12.2)

                                                  July               59 (15.0)

                                                  August            59 (15.0)

                                                  September          55 (12.8)

                                                  October            46 (7.8)

                                                  November           41 (5.0)

                                                  December           38 (3.3)
                                          46

-------
Ohio      Table 7d:
 (Cont'd)
Daily average temperatures of thermal  mixing  zones  at corre-
sponding ambient temperatures as required  in  Section  (B)(l)  of
this rule.  Shown as degrees Fahrenheit  and Celsius.
                              Daily Average
                                              Daily  Average
Ambient
32(0)
33(0.6)
34(1.1)
35(1.7)
36(2.2)
37(2.8)
38(3.3)
39(3.9)
40(4.4)
41(5.0)
42(5.6)
43(6.1)
44(6.7)
45(7.2)
Table 7e:
Average:
Daily
Maximum:
Temperature
41(5.0)
41(5.0)
43(6.1)
45(7.2)
46(7.8
48(8.9)
50(10.0)
52(11.1)
53(11.7)
55(12.8)
57(13.9)
59(15.0)
61(16.1)
62(16.7)
Ambient Temperature
46(7.8) 65(18.3)
47(8.3) 66(18.9)
48(8.9) 68(20.0)
49(9.4) 70(21.1)
50(10.0) 71(21.70
51(10.6) 73(22.8)
52(11.1) 75(23.9)
53(11.7) 77(25.0)
54(12.2) 78(25.6)
55(12.8) 80(26.7)
56(13.3) 82(27.2)
57(13.9) 84(28.9)
58(14.4) 86(30.0)
59(15) and above - daily
average limit will be determined
on a case-by-case basis.
Lake Erie Excepted Areas - includes all water of Lae designated in
Division (C) of this rule, excluding Maumee Bay and Sandusky Bay,
Tables 5i and 5j. Temperatures within mixing zones shall comply
with Table 1.
Jan. Feb. Mar. Mar.
1-31 1-29 1-15 16-31
_
52 52 55 55
Apr. Apr. May May June
1-15 16-30 1-15 16-31 1-15
_
59 63 66 76 82
                     (11.1) (11.1)  (12.8)  (12.8)   (15.0)  (17.2)  (18.9)  (24.4)   (27.8)

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Ohio
 (Cont'd)
June   July
16-31  1-31
Aug.
1-31
Sept.
1-15
Sept.  Oct.
16-30  1-15
Oct.   Nov.
16-31  1-30
Dec.
1-31
          Average:     84     84     84     84       -----
                     (28.9) (28.9) (28.9) (28.9)

          Daily
          Maximum:     88     88     88     88      84     75     70      65       55
                     (31.1) (31.1) (31.1) (31.1)   (28.9)  (23.9)  (21.1)  (18.3)   (12.8)
          Ohio River
           Temperature:  Maximum rise above  natural  temperature
           shall not exceed 5 deg. F, in addition the  allowable
           maximum temperature during a month shall  not  exceed:
                    Month

                    January
                    February
                    March
                    April
                    May
                    June
                 Temperature
                    deg. F

                      50
                      50
                      60
                      70
                      80
                      87
                      Month

                      July
                      August
                      September
                      October
                      November
                      December
                          Temperature
                             deg. F

                               89
                               89
                               87
                               78
                               70
                               57
          Mahoning River Basin
           Water temperature shall not exceed the maximum  limits
           in the above table during more than one  percent  of  the
           hours in the 12-month  period ending with  any  month,  at
           no time shall the water temperature at such  locations
           exceed the maximum limits in the table by more  than 3
           deg. F.

           The Mahoning River upstream of the Leavittsburg  Dam and
           all tributaries except the Little Squaw  Creek down-
           stream of Highway 1-80, Mines Run downstream  of
           Lowellville Road, Mosquito Creek downstream  of  Federal
           Street in Niles, the last 200 yards of Yellow Creek.
          For Aquatic Life (Warmwater Fishery)
                                Temperature:   (a) No abnormal  temperature  changes  that
                                may affect aquatic life unless caused  by natural
                                conditions.

                                (b) The maximum temperature  shall  not  exceed  natural
                                temperatures by more than 5F  provided that at  no  time
                                shall they exceed those indicated  in the following
                                table:
                                              48

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Ohio                           Maximum Temperature In Peg.  F.  During Month
 (Cont'd)
                             Jan Feb Mar Apr May June July Aug Sept Qct Nov Dec

                             50  50  60  70  80   90   90  90   90  78  70  57
          Lower Mahoning River
                                                                Mile Points  from Mouth
                                                                    Beginning  Ending
                        1    Leavittsburg Dam to  Main St.  in  Warren     46.08    38.08

                        2    Main St.  in Warren to the Lowellville Dam  38.08    12.81

                        3    Lowellville Dam to the Ohio-Pa  state  line   12.81    11.61

                    (3)  CERTAIN TRIBUTARIES TO  WHICH THIS  REGULATION APPLIES  ARE:

                        (a)  Mosquito  Creej  from Federal  Street  in Miles to  its mouth

                        (b)  Little Squaw Creek from Highway  1-80  to  its mouth

                        (c)  Hines Run,  from Lowellville  Road to its  mouth

                        (d)  Yellow Creek,  the last 200 yards to its  mouth

          For General  Aquatic Life (warmwater fishery)

                            Temperature:   (i) No abnormal  temperature changes  that
                            adversely effect aquatic life.

                            (ii)At no time  shall  the temperature  exceed those  values
                            indicated in the following table:

                               Maximum Temperature in Peg.  F. During Month

                             Jan Feb  Mar Apr May June July Aug  Sept  Oct Nov Dec

                             56  56  62  71   80    90  90   90    90  78  69  58


          For Industrial Water Supply

                            Temperature:   Not to exceed  100F
                                         49

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Ohio      Lower Cuyahoga River
 (Cont'd)
                            In that  portion  of  the  Cuyahoga  River extending from the
                            confluence of the Cuyahoga  River and  Big Creek  to the mouth
                            of the Cuyahoga  River,  at  no  time shall  water temperature
                            exceed the maximum  temperatures  indicated in the following
                            table.
          Deg. F.
          Deg. C.

Oklahoma:
Jan
53
11.7
Feb
53
11.7
Mar
63
17.2
Apr
73
22.8
May
83
28.3
June
95
35.0
July
95
35.0
Aug
95
35.0
Sept
95
35.0
Oct
83
28.3
Nov
73
22.8
Dec
60
15.5
Oregon:
At no time shall heat be added to  any  stream  in  excess  of
the amount that will raise the temperature  of the receiving
water more than 5F.  In streams,  temperature determina-
tions shall be made by averaging representative  temperature
measurements of the cross sectional  area  of streams at  the
end of the mixing zone.

In lakes, the temperature of the water column and/or
epilimnion, if thermal stratification  exists, shall  not be
raised more than 3F above that which  existed before the
addition of heat of artificial origin,  based  upon the
average of temperatures taken from surface  to the bottom or
surface to the bottom of the epilimnion,  if stratified.

The normal daily and seasonal variations  that were present
before the addition of heat from other than natural  sources
shall be maintaned.  The maximum temperature  due to
man-made causes shall exceed 68F  in trout  streams and
lakes except in the segment of Arkansas River from Kaw
Reservoir to the headwaters of Keystone Reservoir where
maximum temperature shall not exceed 94F.

No artificial heat shall be added  such that the  receiving
water temperature exceeds the maximums specified above.

Privately owned lakes and reservoirs used in  the process  of
cooling water for industrial purposes, are  not classified
as waters of the State, (See Appendix  C)  and  are exempt
from these temperature restrictions, provided the water
released from any such lake or reservoir into a  stream
system shall meet the water quality standards of the
receiving stream.

(Since the numerical limits of this standard  differ among the 19
river basins, these limits have been left blank  to avoid
confusion.)  No measurable increases shall  be allowed outside of
the assigned mixing zone, as measured  relative to a control point
immediately upstream from a discharge  when  stream temperatures
are	F or greater, or more than  0.5F increase due to a single
source discharge when receiving water  temperatures are  	F or
                                                50

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Oregon (Cont'd)
less, or more than 2F increase due to all sources combined when
stream temperatures are	F or less, except for specifically
limited duration activities which may be authorized by DEQ under
such conditions as DEQ and the Department of Fish and Wildlife
may prescribe and which are necessary to accomodate legitimate
uses or activities where temperatures in excess of this standard
are unavoidable and all practical preventive techniques have been
applied to minimize temperature rises.  The Director shall hold a
public hearing when a request for an exception to the temperature
standard for a planned activity or discharge will in all
probability adversely affect the beneficial uses.

The present temperature values given below are to be placed in the
blanks in the preceding language.
                          North Coastal-Lower Columbia Basin
                          Mid Coast Basin
                          Umpqua Basin
                          South Coast Basin
                          Rogue Basin
                          Willamette Basin
                            Multnomah Channel and Main Stem of
                            Willamette River (mouth to R.M. 50)
                            Willamette River (Newberg to R.M. 187)
                            All other Willamette Basin streams:
                              Salmonid
                              Non-Salmonid
                          Columbia River
                          Sandy Basin
                            Main Stem Columbia River (R.M. 120-147)
                            All other Basin Waters
                          Hood Basin
                            Columbia River (R.M. 147-203)
                            Other Hood River Basin streams
                          Deschutes Basin
                            Columbia River (R.M. 203-218)
                            Other Deschutes River Basin streams
                          John Day Basin
                          Umatilla Basin
                          Walla Walla Basin
                          Grand Ronde Basin
                          Powder Basin
                          Malheur River Basin
                          Malheur Lake Basin
                          Goose and Summer Lakes Basin
                            Goose Lake
                                                68, 67.5, 66
                                                64, 63.5, 62
                                                58, 57.5, 56
                                                64, 63.5, 62
                                                58, 57.5, 56
                                                70, 69.5, 68
                                                64, 63.5, 62

                                                58, 57.5, 56
                                                64, 63.5, 62
                                                68, 67.5, 66

                                                68, 67.5, 66
                                                58, 57.5, 56

                                                68, 67.5, 66
                                                58, 57.5, 56

                                                68, 67.5, 66
                                                58, 57.5, 56
                                                68, 67.5, 66
                                                68, 67.5, 66
                                                68, 67.5, 66
                                                68, 67.5, 66
                                                68, 67.5, 66
                                                68, 67.5, 66
                                                68, 67.5, 66

                                                Daily average
                                                temperatures shall
                                                not exceed 70F, or
                                                the daily mean
                                                ambient air temp-
                                                erature, which-
                                                ever is greater.
                                           51

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Oregon (Cont'd)     All other Waters                               68,  67.5,  66
                  Klamath Basin
                    Salmonid                                       58,  57.5,  56
                    Non-Salmonid                                   72,  71.5,  70


Pennsylvania:     Temp-]     No rise when  ambient  temperature  is  58F  or
                            above, not more than  5F  rise  above  ambient
                            temperature until  stream  temperature reaches
                            58F; not to  be changed by  more than 2F  during
                            any one-hour  period.

                  Temp2     No rise when  ambient  temperature  is  87F  or
                            above; not more than  a 5F  rise above ambient
                            temperature until  stream  temperature reaches
                            87F; not to  be changed by  more than 2F  during
                            any one-hour  period.

                  Temps     For the period 2/15 to 7/31,  no rise when
                            ambient temperature is 74F or above; not  more
                            than 5F rise above ambient temperature until
                            stream temperature reaches  74F,  not to be
                            changed by more than  2F  during any  one-hour
                            period; for the remainder of  the  year, no  rise
                            when ambient  temperature  is 87F  or  above, not
                            more than a 5F rise  above  ambient temperature
                            until stream  temperature  reaches  87F, not to be
                            changed by more than  2F  during any  one-hour
                            period.

                  Temp4     Not to exceed the  following temperatures  in the
                            month indicated:

                            Month                         Temperature,  F

                            January                           56
                            February                          56
                            March                             62
                            April                             71
                            May                               80
                            June                              90
                            July                              90
                            August                            90
                            September                         90
                            October                           78
                            November                          69
                            December                          58
                  Temp5      Not  more than 5F above the average daily
                               temperature during the 1961-66 period, which
                               is shown below, or a maximum of 86F,
                               whichever is less.
                                        52

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Pennsylvania (Cont'd)
                            Average Daily Temperature
                                    1961-1966
                        (Temperatures may be interpolated)
           Delaware Estuary, Head
           of Tide to River Mile
           108,4 (about 1  mile
           below Pennypack Creek)
   Date

January 1
February 1
March 1
April 1
May 1
June 1
July 1
August 1
September 1
September 1
October 1
November 1
December 1
December 15
37
35
38
46
58
71
79
81
78
76
70
59
46
40

      Temps
Delaware Estuary, River
Mile 108.4 (about 1 mile
below Pennypack Creek)
to Big Timber Creek
                                              41
                                              35
                                              38
                                              46
                                              58
                                              71
                                              79
                                              81
                                              79
                                              77
                                              70
                                              61
                                              50
                                              45
                                                              Delaware Estuary, from
                                                              Big Timber Creek to
                                                              Pennsylvania-Delaware
                                                              State Line
                                      42
                                      36
                                      40
                                      47
                                      58
                                      72
                                      80
                                      81
                                      78
                                      76
                                      70
                                      60
                                      50
                                      45
                                    Not more than 5F rise above the ambient
                                    temperatures until stream temperatures reach
                                    50F, nor more than 2F rise above ambient
                                    temperature when temperatures are between 50F
                                    and 58F, nor shall temperatures exceed 58F.,
                                    whichever is less except in designated heat
                                    dissipation areas.
                                       53

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Pennsylvania (Cont'd):    Tempy     As a  guideline,  the  maximum length of heat
                                    dissipation  areas  shall  not be longer than 3,500
                                    feet  measured  from the  point where the waste
                                    discharge  enters the stream.  The width of heat
                                    dissipation  areas  shall  not exceed two-thirds the
                                    surface width  measured  from shore to shore at any
                                    stage of tide  or the width  encompassing
                                    one-fourth the cross-sectional  area of the
                                    stream, whichever  is less.   Within any one heat
                                    dissipation  area only one  shore shall  be used in
                                    determining  the  limits  of  the area.  Where waste
                                    discharges are close to  each other, additional
                                    limitations  may  be prescribed to protect stream
                                    uses.  Controlling temperatures shall  be measured
                                    outside the  heat dissipation area.  The rate of
                                    temperature  change in the  heat dissipation area
                                    shall not  cause  mortality  of the fish.

                          Temps     As a  guideline,  the  maximum length of heat
                                    dissipation  areas  shall  not be longer than 3,500
                                    feet  or 20 times the average stream width,
                                    whichever  is less, measured from the point where
                                    the waste  discharge  enters  the stream.  Heat
                                    dissipation  areas  shall  not exceed one-half the
                                    surface stream width or the width encompassing
                                    one-half of  the  entire  cross-sectional areas of
                                    the stream,  whichever is less.  Within any one
                                    heat  dissipation area,  only one shore shall be
                                    used  in determining  the  limits of the area.
                                    Where waste  discharges  are  close to each other,
                                    additional limitations  may  be prescribed to
                                    protect water  uses.   Controlling temperatures
                                    shall be measured  outside  the heat dissipation
                                    zone.  The rate  of temperature change in
                                    designated heat  dissipation areas shall not cause
                                    mortality  of the fish.

                          Tempg     As a  guideline,  the  maximum length of heat
                                    dissipation  areas  shall  not be longer than 1,000
                                    feet  or 20 times the average width of the stream,
                                    whichever  is less, measuring from the points
                                    where the  waste  discharge  enters the stream.
                                    Heat  dissipation areas  shall not exceed one-half
                                    the surface  stream width or the width
                                    encompassing one-half of the entire
                                    cross-sectional  area of the stream, whichever is
                                    less. Within  any  one heat  dissipation area, only
                                    one shore  shall  be used in  determining the limits
                                    of the area.  Where  waste  discharges are close to
                                    each  other,  additional  limitations may be
                                    prescribed to  protect water uses.  Controlling
                                    temperatures shall be measured outside the heat
                                    dissipation  zone.  The  rate of temperature change
                                    in designated  heat dissipation areas shall not
                                    cause mortality  of the  fish.
                                           54

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Puerto Rico:      SA - 94F max.,  No  heat  may  be  added which causes monthly
                       arithmetic  means  of the  maximum daily temperature of
                       any site  to be  exceeded  by more than 1.5F.

                  SB - No discharge or combination of discharges shall  be
                       injurious to fish or shellfish or the culture or
                       propagation of  a  balanced  indigenous population  (nor
                       in any way  affect desired  use.)

                  SC - Thermal discharges  shall  be confined to the
                       epilimnetic layer of stratified lakes.

                  SD - The rate  of temperature  change shall  not exceed  1F
                       per hour  and not  exceed  a  total  of 5F  in any 24 hour
                       period except  from  natural  causes.

Rhode Island:     Class A (Excellent)  -  no increase from other than natural
                                         causes.

                  Class B (Rec.) - Only  such  increases that will  not impair
                                    any usages  specifically assigned to  this
                                    class.   The  temperature increase shall  not
                                    raise the temperature of the receiving
                                    waters  above the recommended limit on the
                                    most  sensitive receiving water use and in
                                    no  case exceed 83F.   In no case shall  the
                                    temperature  of the receiving water be
                                    raised  more  than 4F.  Heated discharges
                                    into  designated trout habitats shall  not
                                    raise the temperature above 50F during
                                    October to  15  June nor greater than  54F,
                                    15  June through September.

                  Class C (F&WL) - Only  such  increases that will  not impair
                                    any usages  specifically assigned to  this
                                    Class or causes the growth  of unfavorable
                                    species of  biota.

                  Class D (Nav,  Power) - No case  exceed  90F.

                  Class SA(Shell.)          )    no increase over the recom-
                  Class SB(Bathing)         )    mended limits for the most
                  Class SC(Shell.habitat)   )    sensitive use nor exceed  83F
                                                or raise  the normal  tempera-
                                                ture more than  1.5F June 15
                                                through Sept. or 4F Oct.
                                                through June 15.
                                    55

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South Carolina:   AA - Trout - not above natural conditions:  All  other  fresh
                  waters - 90F max., 5F rise.  All fresh water lakes
                  limited to same maximum temperatures and 5F  rise.  Tidal
                  waters - 4F rise during fall, winter and spring, 1.5F
                  rise during summer.

South Dakota:     Cold water permanent fish - 65F max.
                  Cold water marginal fish - 75F max.
                  Warm water permanent fish - 80F max.
                  Warm water semipermanent - 90F max.
                  Warm water marginal fish - 90F max.

                  Temperature change in fish life propagation waters.  No
                  discharge or discharges shall affect the temperature by
                  more than 4F in streams classified for the beneficial use
                  of cold water permanent, cold water marginal, or warm  water
                  permanent fish life propagation; by more than 5F in
                  streams classified for the beneficial use of warm water
                  semipermanent or warm water marginal fish life propagation;
                  or by more than 3F in lakes or impoundments  classified  for
                  the beneficial use of fish life propagation.  Exceptions  to
                  this criterion may be granted by the Board if such
                  discharge will not impair the beneficial use  of  fish life
                  propagation.  In addition, the maximum  incremental
                  temperature shall  not exceed 2F per hour.  There shall  be
                  no induced temperature change over spawning beds.

                  Fish & Aquatic Life - Same as above with:  The temperature
                  of recognized trout waters shall not exceed 20C.  There
                  shall be no abnormal temperature changes that may affect
                  aquatic life unless caused by natural conditions.

                  Irrigation - The temperature of the water shall  not be
                  raised or lowered  to such an extent as  to interfere with
                  its use for irrigation purposes.

                  Livestock Watering and Wildlife and Navigation - The
                  temperature of water shall not be raised or lowered to such
                  an extent as to interfere with its use  for "livestock
                  watering and wildlife."   (Same with  "navigation"
                  substituted.)

Texas             The temperature limitations are intended to be applied with
                  judgement and are  applicable to the waters specifically
                  identified herein  with the qualifications enumerated  in
                  Section VIII.  Temperature standards are composed of two
                  parts, a maximum temperature and a maximum temperature
                  differential attributable to heated effluents.
                                   56

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Texas (Cont'd)
Utah:
Vermont:
Natural  high temperatures, in excess of 96F, occur
regularly in Texas waters during the summer months.  For
example, 2.3% of United States Geological Survey
measurements made during the summer months on the Double
Mountain Fork of the Brazos River near Aspermont, Texas,
during the period 1958 through 1971  exceeded 96F.  It is
consequently concluded that the 90F maximum temperature
suggested by the National Technical  Advisory Committee is
not applicable to Texas conditions.
                  Fresh Water Streams:

                       Maximum Temperature
                       Maximum Temp. Diff.

                  Fresh Water Impoundments:

                       Maximum Temperature
                       Maximum Temp. Diff.
                            See Table for Specific Waters
                            5F rise over ambient
                            See Table for Specific Waters
                            3F rise over ambient
                  Tidal River Reaches, Bay and Gulf Waters:

                                     Fall,Winter,Spring
                       Maximum Temp. Diff.
                       Maximum Temperature
                            4F
                           95 F
             Summer

              1.5F
              95 F
See Standards for segment Max. Temperature.

Cold water fish - 20C max., 2C change limit.
Warm water fish - 27C max., 4C change limit.
Non-Game Fish - on case-by-case basis.

Class A - (PWS) - As naturally occurs.

Class B and C (levels of rec. and F&WL) - temperature by
"water type."

Type I(natural trout) - 1F max. rise.

Type II(trout) - 1F max. rise.

Type III(warmwater fish):

Max. River Temp.
                  Above   66F
                        63-66F
                        59-62F
                        55-58F
                  Below   55F
Max. Rise

    1
    2
    3
    4
    5
                                       57

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Vermont (Cont'd)  Type IV(trout lakes) - 1 max. rise.  No withdrawal from or
                  discharge to hypolimnion except withdrawals from PWS or
                  water quality enhancement.

                  Type V(other lakes)

                  Max. Lake Temp.                   Max. Rise
Virginia:

MAJOR
CLASS

  I
 II


III



 IV

  V

 VI
      **
     ***
                  Above 60F
                   60-50F
                  Below 50F

                  Provision for hypolimnion as Type IV.
                                            1
                                            2
                                            3
                                  RISE ABOVE
                                  NATURAL*

                                 4.0(Sept.-May)
                                 1.5(June-Aug.)

                                 4.0(Sept.-May)
                                 1.5(June-Aug.)
  F
MAXIMUM
                                                  90
HOURLY
CHANGE
   OR OTHER DESCRIPTION
        OF WATERS

Open Ocean (Seaside of the
Land Mass)

Estuarine Tidal Water -
Coastal Zone to Fall Line)

Free Flowing Streams (Coastal
Zone and Piedmont Zone to the
Crest of the Mountains)

Mountainous Zone

Put and Take Trout Waters

Natural Trout Waters
Natural temperature is that temperature of a body of water due
solely to natural conditions without the influence of any
point-source discharges.

The maximum hourly temperature change of 2F is to apply beyond
the boundaries of mixing zones and does not apply to temperatures
caused by natural conditions.

Any rise above natural temperature to be allowed by the Board
shall  be determined on a case-by-case basis, but in no instance
shall  exceed 5F.
5
5***
5***
87
70
68
2
2
2
                                           58

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Virgin Islands:   Thermal  policy
                     (a) Fish  and  other  aquatic  life  shall  be protected from
                  thermal blocks  by  providing for  a  minimum 75 percent stream
                  or estuarine  cross-section  and/or  volumetric passageway,
                  including a minimum of  one  half  of the surface as measured
                  from water  edge to water  edge at any stage of tide.
                     (b) In non-passageway the surface water temperature shall
                  not exceed  90F.
                     (c) No heat may  be  added  except  in designated mixing
                  zones which would  cause temperatures to  exceed 90F, or
                  which would cause  the monthly mean of the maximum daily
                  temperature at  any site,  prior to  the addition of any heat,
                  to be exceeded  by  more  than 1.5F.
                     (d) No discharge or combination  of discharges shall be
                  injurious to  fish  or  shellfish or  the culture or
                  propagation of  a balanced  indigenous population thereof.
                     (e) Rate  of temperature  change outside the maxing zone
                  shall not be  more  than  1F  per hour nor  to exceed 5F in
                  any 24-hour period except  when natural phenomena cause
                  these limits  to be exceeded.
                     (f) Unless  specific conditions such as spawning ground,
                  migratory routes,  or  other  sections of conditions from
                  these regulations  are applicable,  the maxing zone should be
                  defined by  a  sphere with  a  specified point as the center
                  (not necessarily the  outfall  but limited to one point for
                  each installation) and  a  radius  equal  to the square root of
                  the volume  of discharge (A) expressed as millions of
                  gallons per day, times  200  feet  (radius  of mixing zone),
                  and in no case  exceed 3/4 mile.
Washington:       Class AA  (Extraordinary)
                  Water temperatures  shall  not  exceed 16.0 Celsius
                  (freshwater) or  13.0  Celsius(marine water)  due to human
                  activities.  Temperature  increases  shall  not, at any time,
                  exceed t = 23/(T+5)  (freshwater)  or t -  8/(T-4) (marine
                  water).

                  When natural conditions exceed  16.0 Celsius (freshwater)
                  and 13.0 Celsius  (marine  water),  no temperature increase
                  will be allowed  which  will  raise  the receiving water
                  temperature by greater than 0.3  Celsius.
                                     59

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Washington(Cont'd)
                  For purposes hereof, "t" represents the permissive
                  temperature change across the dilution zone, and "T"
                  represents the highest existing temperature in this water
                  classification outside of any dilution zone.

                  Provided that temperature increase resulting from nonpoint
                  source activities shall not exceed 2.8 Celsius, and the
                  maximum water temperature shall not exceed 16.3 Celsius
                  (freshwater).                     *  

                  Class A (Excellent)

                  Water temperatures shall not exceed 18.0 Celsius
                  (freshwater) or 16.0 Celsius  (marine water) due to human
                  activities.  Temperature increases shall not, at any time,
                  exceed t = 28/(T + 7)  (freshwater) or t = 12/(T - 2)
                  (marine water).

                  When natural conditions exceed 18.0 Celsius (freshwater)
                  and 16.0 Celsius (marine water), no temperature increase
                  will be allowed which will  raise the receiving water
                  temperature by greater than 0.3 Celsius.
                  For purposes hereof, "t" represents the permissive
                  temperature change across the dilution zone, and "T"
                  represents the highest existing temperature in this water
                  classification outside of any dilution zone.
                                                   i\  '^
                  Provided that temperature increas^  resulting from nonpoint
                  source activities shall not exceecF2.8f Celsius, and the
                  maximum water temperature shall not exceed 18.3 Celsius
                  (freshwater).

                  Class B (Good)

                  Temperature - water temperatures shall not exceed 21.0
                  Celsius (freshwater) or 19.0 Celsius  (marine water) due to
                  human activities.  Temperature increases shall not, at any
                  time, exceed t = 34/(T+9) (freshwater  or t - 16/T (marine
                  water).                        '

                  When natural conditions exceed 21.0 Celsius (freshwater
                  and 19.0 Celsius (marine water), no temperature increase
                  will be allowed which  will  raise the receiving water
                  temperature by greater than 0.3 Celsius.
                                           60

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Washington(Cont'd)
                  For purposes hereof, "t"  represents  the  permissive
                  temperature change across the dilution zone,  and  "T"
                  represents the highest existing temperature  in  this water
                  classification outside of any dilution zone.

                  Provided that temperature increase resulting  from nonpoint
                  source activities shall not exceed 2.8  Celsius,  and  the
                  maximum water temperature shall not  exceed 21.3  Celsius
                  (freshwater).

                  Class C (Fair)
                                                                        \o
                  Temperature - water temperatures  shall  not  exceed 24.0'
                  Celsius (freshwater) or 22.0 Celsius  (marine water)  due  to
                  human activities.  Temperature  increases  shall  not,  at  any
                  time, esceed t = 39/(T+ll)  (freshwater) or  t =  20/(T+2)
                  (marine water).

                  When natural conditions exceed  24.0 Celsius  (freshwater)
                  and 22.0 Celsius (marine water), no temperature increase
                  will be allowed which will  raise  the receiving  water
                  temperature by greater than 0.3  Celsius.

                  For purposes hereof, "t"  represents the permissive
                  temperature change across the dilution  zone; and "T"
                  represents the highest existing temperature in  this  water
                  classification outside of any dilution  zone.

                  Lake Class

                  No measurable change from natural conditions.

Wisconsin         Temperature Standards for Fish  and Aquatic  Life

                  1.  There shall be no temperature changes that  may
                      adversely affect aquatic life.

                  2.  Natural  daily and seasonal  temperature  fluctuations
                      shall  be maintined.

                  3.  The maximum temperature rise  at the edge of the  mixing
                      zone above the existing natural  temperature shall not
                      exceed 5F for streams and 3F for  lakes.

                  4.  The temperature shall  not exceed 89F for warm water
                      fish.

                  Streams classified as trout waters by the Department  of
                  Natural Resources (Wisconsin Trout Streams.  Publication
                  213-720) shall  not be altered from natural  background by
                  effluents  that influence the stream environment to such an
                  extent that trout populations are adversely affected.
                                 61

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Wisconsin (Cont'd)
                  There shall be no significant  artificial  increases  in
                  temperature where natural trout  reproduction  is  to  be
                  protected.

                  Lake Michigan and Lake Superior  thermal  standards.   For
                  Lake Michigan and Lake Superior  the  following thermal
                  standards are established so as  to minimize effects on the
                  aquatic biota in the receiving waters.

                  (l)(a)  Thermal-discharges  shall  not raise the receiving
                  water temperature more than 3F  above the existing  natural
                  temperature at the boundary of mixing zones established in
                  paragraphs (b) and (c).

                  (b) 1.  The mixing zone  for a  shoreline  thermal  discharges
                  shall be the area included  within the perimeter  of  a
                  rectangular figure extending 1,250 feet  in both  directions
                  along the shoreline from the outfall  and 1,250 feet into
                  the lake.

                  2.  The mixing zone for  an  offshore  thermal discharge  shall
                      be the area within a 1,000 foot  radius circle with its
                      center at the point  of  discharge.

                  (c) The department may,  upon request from the owner of a
                  source of thermal discharge, adjust  the  boundaries  of  the
                  mixing zone established  in  paragraph (b) for  that source.
                  In no case may any mixing zone so established include  an
                  area greater than 72 acres  nor may it include more  than
                  2,800 feet of shoreline.

                  (2)  In addition to the  limitation set  forth  in  subsection
                  (1), but excepting the Milwaukee Harbor, Port Washington
                  Harbor and the mouth of  the Fox  River,  thermal discharges
                  to Lake Michigan shall not  raise the temperature of the
                  receiving waters at the  boundary of  the  established mixing
                  zone above the following limits.

                  January          45F                 May      60F
                  February         45                  June     70
                  March            45                  July     80
                  April            55                  August    80
                  September        80                  November 60
                  October          65                  December 50
                                       62

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Wisconsin (Con'd)
                  Mississippi river thermal standards.   In  addition  to  the
                  standards for fish and aquatic life, the  monthly average  of
                  the maximum daily temperature in the Mississippi River
                  outside the mixing zone  shall not exceed  the  following
                  limits:

                  January          40F                July          84
                  February         40                 August         84
                  March            54                 September      82
                  April            65                 October        73
                  May              75                 November      58
                  June             84                 December      48

                  Review of thermal standards.  (1)  Whenever the owner of
                  any source of thermal discharges that  existed on or before
                  July 31, 1975, in compliance with department  guidelines and
                  after opportunity for public hearing,  can demonstrate to
                  the satisfaction of the  department that the mixing  zone
                  established pursuant to  this chapter is more  stringent than
                  necessary to assure the  protection and propagation  of a
                  balanced, indigenous population of shellfish, fish  and
                  wildlife in and on the receiving water, the department may:


                  (a)  Impose a mixing zone with respect to such thermal
                  discharge that will assure the protection and propagation
                  of such a population, or

                  (b)  Exempt such thermal discharge from the thermal
                  requirements, of this chapter provided this exemption will
                  not endanger the propagation of such a population.

                  (2)  Any owner desiring  a review pursuant to  NR 102.07 (1)
                  shall submit a demonstration to the department no  later
                  than June 30, 1976.  The department shall  reach a  decision
                  no later than December 31, 1976.

                  (3)  In the event the owner fails to make a satisfactory
                  demonstration pursuant to NR 102.07(1), the department
                  shall establish as compliance date for the thermal
                  component to be achieved no later than July 1, 1979.

                  (4)  Whenever the owner  of any source of  thermal discharges
                  that commenced on or after August 1, 1975, in compliance
                  with department guidelines and after opportunity for  public
                  hearing, can demonstrate to the satisfaction  of the
                  department that the mixing zone established pursuant  to
                  this chapter is more stringent than necessary to assure the
                  protection and propagation of a balanced,  indigenous
                  population of shellfish, fish and wildlife in and  on  the
                  receiving water, the department may:
                               63

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Wisconson (Cont'd)
                  (a)  Impose a mixing zone with  repect  to  such  thermal
                  discharge that will assure the  protection  and  propagation
                  of such a population, or

                  (b)  Exempt such thermal discharge  from the  thermal
                  requirements of this chapter provided  this exemption  will
                  not endanger the propagation of such  a population.

                  (5)  In the event  an owner fails  to make  a satisfactory
                  demonstration pursuant  of NR 102.07 (4),  the discharge
                  shall be in compliance  with the thermal requirements  of
                  this chapter upon  commencement  of the  discharge.

                  (6)  The department may require the reduction  of  thermal
                  discharges or the  size  and configuration  of  a  mixing  zone
                  if it finds that environmental  damage  is  imminent or
                  existent.

West Virginia     Temperature rise shall  be limited to  no more than 5F above
                  natural temperature, not to exceed  87F at any time during
                  months of May through November  and  not to exceed  73F at
                  any time during months  of December  through April.

Wyoming           a.  For Class I, II and III water effluent attributable to
                  or influenced by the activities of  man shall not  be
                  discharged in amounts which change  natural ambient water
                  temperatures to levels  which are deemed to be  harmful  to
                  existing aquatic life.

                  b.  For impoundments and waters designated by  the Wyoming
                  Game and Fish Department as cold water fisheries  effluent
                  attributable to or influenced by the  activities of man
                  shall not be discharged in amounts  which  will  result  in a
                  change of more than 2 degrees F (1.1  degree  C) in existing
                  temperatures.

                  c.  For waters designated by the Wyoming  Game  and Fish
                  Department as warm water fisheries  effluent  attributable to
                  or influenced by the activities of  man shall not  be
                  discharged in amounts which will  result  in a change  of more
                  than 4 degrees F (2.2 degrees C) in existing temperatures.

                  d.  The maximum allowable stream temperatures  will  be the
                  maximum daily stream temperatures plus the allowable
                  change, provided that this temperature is not  lethal  to
                  existing fish life, which is considered  to be  78  degrees F
                  (25.6 degrees C) in the case of cold  water fisheries  and 90
                  degrees F  (32.2 degrees C)  in the case of warm water
                  fisheries.
                                  64

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Wyoming (Cont'd)
American Samoa
                  e.  With  the  exception of the provisions of Section lOd  and
                  12  of  these  regulations,  temperature standards shall apply
                  at  all  times  and at all  depths of the receiving water  and
                  may not be violated at any time or at any depth.

                  f.  In all waters supporting warm and/or cold water fish
                  there  shall  be  no induced temperature change over spawning
                  beds.   For questions concerning the location of spawning
                  beds the  Wyoming Game and Fish Department shall be the
                  final  authority.

                  g.  The various  requirements of this Section may be waived
                  only under the  provisions of Section 316(a) of the Federal
                  Act.

                  The temperature  shall  not deviate more than 1.5F from
                  conditions which would occur naturally and shall not hourly
                  fluctuate more  than 1.0  degrees Fahrenheit nor exceed 85
                  degrees Fahrenheit due to the influence of other than
                  natural causes.

Trust Territories Public or Domestic Water Supply - temperature from other
                  than natural  causes shall not exceed 85F, and there shall
                  not be more  than 5F increase nor more than a 1.0F hourly
                  temperature  variation due to thermal discharges or
                  reservoir manipulation.

                  Recreation -  shall  not exceed 85F due to influence of
                  other  than natural  conditions.

                  Propagation  of  Fish and  other Aquatic Life - shall not
                  deviate from  natural  conditions by more than 1.5F, nor
                  hourly deviate  by more than 1.0F.
                               65
                                                     *U 8 GOVERNMENT PRINTING OFFICE: 1980 311-132/89

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     Environmental  Protection Agency
JRfigion V, Library
230 South Dearborn  Street
OM^O.  Illinois  60604

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