905R93103
                                             3-3-93
COMPARISON OF PROPOSED HHBAFs  FOR THE GLI
                  by
           Charles E. Stephan
    Environmental Research Laboratory
   Office of Research and Development
  U.S. Environmental Protection Agency
               Duluth, MN
      U.S. Environmental Protection Agency
           5 Library (PL-12J)

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DERIVATION OF PROPOSED HUMAN HEALTH AND WILDLIFE




        BIOACCUMULATION FACTORS FOR THE




              GREAT LAKES INITIATIVE




                 (March 1993 Draft)

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                                             DRAFT
                                             3-3-93
 RANKED PROPOSED HHBAFs FOR THE GLI
                 by
         Charles E. Stephan
  Environmental  Research Laboratory
 Office of Research and Development
U.S. Environmental Protection Agency
             Duluth, MN

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                                                      DRAFT
                                                      3-3-93
   DERIVATION OF PROPOSED HUMAN HEALTH AND WILDLIFE

BIOACCUMULATION FACTORS FOR THE GREAT LAKES INITIATIVE
                          by
                  Charles E. Stephan
           Environmental  Research Laboratory
          Office of Research and Development
         U.S. Environmental Protection Agency
                      Duluth,  MN

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The  proposed  Human Health  Bioaccumulation Factors  (HHBAFs)  and
Wildlife  Bioaccumulation  Factors  (WLBAFs)  were derived  using a
draft of the 'Procedure to Determine a Bioaccumulation Factor0 that
was developed under the Great  Lakes Initiative  (GLI).   (Although
proposed HHBAFs were derived for many  chemicals,  proposed WLBAFs
were derived only for DDT, mercury, PCBs,  and 2,3,7,8-TCDD.)   The
proposed HHBAFs were derived  to apply to  fish  that contain 5.0%
lipids and are at  trophic  level 4 in the Great Lakes.  The proposed
WLBAFs were derived to apply to fish that  contain 7.9% lipids and
are at trophic levels 3 and 4  in the Great Lakes.   The number of
digits given implies nothing about  how many are  significant.   For
organic chemicals, predicted BCFs were  calculated from Log P using
the  equation  'Log BCF =  0.79 (Log  P)   -  0.40"   (Veith  and Kosian
1983) .   The predicted  BCFs are assumed  to apply  to  fish  that
contain 7.6% lipids.  Because chemicals with very high values for
Log P do not accumulate according  to the  equation,  the predicted
BCF was not allowed to be greater than 100,000 at 7.6% lipids.  All
logarithms are to base 10.  The "MedChem Star' and "MedChem Calc"
values for Log P were obtained from the QSAR system at ERL-Duluth
and are based on version 3.53  of MedChem,  which  was obtained from
Pomona College.   Professional  judgement was used when selecting a
"typical Log P"  on the basis of the various measured and predicted
values that had been found for the  chemical. Values for the Food
Chain Multiplier  (FCM)  were obtained by rounding the "typical Log
P" to two significant digits and  then using the value specified in
the  FCM  table for  the  trophic  level  of  concern;  interpolation
between values  in the FCM  table was  not  used.   When Log  P  is
greater than 6.5  and no chemical specific  information concerning
BAFs is available,  a value of 1.0 was used  for the FCM as specified
in the GLI BAF methodology.  Data for freshwater species were given
preference over data for saltwater species, especially for metals,
metalloids,   and   such    ionizable    organic    chemicals    as
pentachlorophenol.  HHBAFs for metals  and metalloids are to apply
to  the  wet  weight  of  the  edible portion,  e.g.,  muscle,  of
freshwater fish;  WLBAFs for metals  and metalloids are to apply to
the wet  weight  of the whole body  of  freshwater fish.  If  a BAF
could be calculated for  a  chemical  from a field study in the Great
Lakes, BAFs from other bodies of water were not considered for that
chemical.  For organic chemicals,  a measured BCF  or BAF was used
only if an acceptable measurement of percent lipids was available
so  that  the  BCF  or BAF  could  be  normalized to  1% lipids.   No
adjustment was made to account for the different  solvents that were
used in the measurement of percent  lipids.

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ACENAPHTHENE     [CAS#:  83-32-9]

>  Predicted BAF based  on  Log  P:
      The following values were  found  for  Log P:
                3.92           MedChem  Star
                4.07           MedChem  Calc
                3.92           Miller et al.  1985
                3.97           Isnard and Lambert  1989
      A Log P of 3.84 has been proposed for  use in  the derivation
      of  sediment quality  criteria  for   acenaphthene  (U.S.  EPA
      1991a).  A value  of 3.98 was selected  as a  'typical Log P",
      from which the following were obtained:
           Predicted BCF   (at  7.6% lipids) =  554.9
           Normalized BCF  (at  1.0% lipids) =  73.0
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the  predicted HHBAF that
      is calculated from the "typical  Log  P"  is  (73.0) (5.0) (1.0) =
      365.


>  Predicted BAF based on Log  P and measured  BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       387     4.8     80.6      Barrows et al. 1980

      Geometric mean normalized BCF = 80.6

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from  the  geometric mean normalized BCF  is
      (80.6) (5.0) (1.0)  = 403.

      Note:  This BCF was based on uptake of radioactivity with no
            verification of the parent chemical. Thus this BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
ACENAPHTHYLENE    [CAS#:  208-96-8]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                3.62          MedChem Calc
      A value of 3.62 was selected-as a "typical Log  P", from which
      the following were  obtained:
           Predicted BCF   (at 7.6%  lipids) = 288.2
           Normalized BCF (at 1.0%  lipids) =  37.9
           Food Chain Multiplier =1.0

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      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log P" is  (37.9)(5.0) (1.0} =
      190.
>  No measured BCF or BAF was found.
ACROLEIN
{CAS#:  107-02-8]
   Predicted BAF based on Log P:
      The following values were found for Log P:
                -0.01         MedChem Star
                 0.101        MedChem Calc
                 0.90         Isnard and Lambert 1989
      A value of 0.5 was selected as a.  "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =0.989
           Normalized BCF (at 1.0% lipids) = 0.130
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (0.130) (5.0) (1.0)
      = 0.65.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       344     4.8      71.7     Barrows et al.  1980

      Geometric mean normalized BCF = 71.7

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated from  the geometric  mean normalized  BCF is
      (71.7) (5.0) (1.0) = 358.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this  BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
ACRYLONITRILE
     [CAS#: 107-13-1J
>  Predicted BAF based on Log P:
      The following values were found for Log P:

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                 0.25          MedChem  Star
                 0.231         MedChem  Calc
      A value of 0.24 was selected as a "typical Log P",  from which
      the following were obtained:
           Predicted BCF  (at 7.6%  lipids) = 0.616
           Normalized  BCF (at 1.0%  lipids) = 0.081
           Food  Chain  Multiplier  =1.0
      For 5.0% lipids  at trophic  level 4 the predicted HHBAF that
      is calculated from the "typical  Log P" is  (0.081) (5.0) (1.0)
      = 0.40.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L     Norm BCF    Reference
                       (1.0% L)

        48     4.8       10.0      Barrows et al. 1980

      Geometric mean normalized BCF =  10.0

      For 5.0% lipids  at  trophic  level 4 the predicted HHBAF that
      is  calculated  from the  geometric mean  normalized  BCF  is
      (10.0) (5.0) (1.0) =  50.

      Note:  This BCF was  based on uptake of radioactivity with no
            verification of the parent  chemical.  Thus this BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
ALDRIN    .[CAS#: 309-00-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                5.09          MedChem Calc          '
                5.66          Isnard and Lambert 1989
                6.496         de Bruijn et al. 1989
      A value of 6.0 was selected as  a  "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 21,878
           Normalized BCF (at 1.0% lipids) =  2,879
           Food Chain Multiplier = 67
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log  P" is  (2,879) (5.0) (67) =
      964,465.

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>  No BCF with a measured value of percent lipids was  found.


>  No measured BAF was found.

      Note: Because  of  metabolism  of  aldrin  to  dieldrin,  a
            predicted  BAF  for  aldrin  that  does  not  take into
            account the effect of metabolism on both the BCF and
            the FCM is expected to be higher than a measured BAF.
            A BAF for  "aldrin plus  toxic persistent metabolites'
            should be higher than a BAF for •aldrin•.


ALUMINUM    [CAS#: 7429-90-5]

   No  usable  data  were   found  concerning  bioconcentration  or
   bioaccumulation of aluminum by freshwater fish.
ANTHRACENE    [CAS#:  120-12-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.45          MedChem Star
                4.49          MedChem Calc
                4.45          Veith et al. 1979a
                4.59          Hammers et al.  1982
                4.54          Miller et al. 1985
                4.54          Isnard and Lambert 1989
      A value of 4.5  was  selected as a  "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6%  lipids) =  1,429
           Normalized BCF (at 1.0%  lipids) =    188
           Food Chain Multiplier =1.2
      For" 5.0% lipids at trophic level 4 the  predicted HHBAF that
      is calculated from the "typical Log P-  is (188) (5.0) (1.2) =
      1,128.


>  No measured BCF was found.


>  A  geometric  mean  BAF of  192.5  was  obtained  with  fish that
   averaged 4.23 %  lipids (Burkhard,  unpublished),  which results in
   a BAF of 228 at 5.0 % lipids.
ANTIMONY    [CAS#: 7440-36-0]

   Barrows et al.  (1980) did not detect any increase above controls

                                5

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   in  whole-body measurements on  bluegills  exposed to antimony.
   Thus  it seems reasonable  to  assume that bioconcentration and
   bioaccumulation  of  antimony by freshwater fish are negligible
   and the HHBAF will  be  set  at  0.0.
ARSENIC     [CAS#: 7440-38-2]

   Spehar et al.  (1980)  obtained BCFs of zero for various inorganic
   and organic forms of  arsenic based on whole-body measurements on
   rainbow trout.  Barrows et al.  (1980)  obtained  a BCF of 4 using
   whole-body measurements on bluegills, and DeFoe (1982)  found a
   BCF of  3  for  whole body of  fathead  minnows.   BCFs for muscle
   should not be  higher than  those for whole body;  thus it seems
   reasonable to use a HHBAF of .1.0 for arsenic.
ASBESTOS     [CAS#: 1332-21-4]

   No  usable  data  were  found  concerning  bioconcentration  or
   bioaccumulation of asbestos by freshwater fish.
1.2-BENZANTHRACENE    [CAS#: 56-55-3]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                5.664         MedChem Calc
                5.91          Miller et al. 1985
                5.91          Isnard and Lambert 1989
      A value of 5.8 was  selected  as  a  "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 15,205
           Normalized BCF (at 1.0% lipids) =  2,001
           Food Chain Multiplier = 33
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log  P" is  (2,001) (5.0) (33) =
      330,165.


>  No measured BCF was found.


>  Field data (Burkhard,  unpublished) resulted  in a geometric mean
   BAF of  40 for two  PAHs  with  four  rings  for fish  with 5.0 %
   lipids.                        " :

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BENZENE    [CAS#: 71-43-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.13          MedChem Star
                2.142         MedChem Calc
                2.13          Veith et al. 1979a
                2.20          Hammers et al. 1982
                2.13          Miller et al. 1985
                2.12          Isnard and Lambert 1989
                2.186         de Bruijn et al. 1989
      A value of  2.14 was selected as a "typical  Log P', from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =19.5
           Normalized BCF (at 1.0% lipids) =  2.57
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical  Log  P" is  (2 ..57) (5.0) (1.0) =
      13.
>  No acceptable measured BCF was found.

      A BCF  of  over 5,000  was reported  for  fish with  about 4%
      lipids by  Brooke  and  Call (manuscript).    The  results were
      based on uptake of radioactivity.  Results of this test were
      not  used  because  metabolites  were  detected  and  probably
      contributed to the BCF.
>  No measured BAF was found.
BENZIDINE    [CAS#: 92-87-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.34          MedChem Star
                1.576         MedChem Calc
      A value of 1.46 was selected as a 'typical  Log  P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =5.67
           Normalized BCF (at 1.0% lipids) =0.75
           Food Chain Multiplier =1.0
      For 5.0%  lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical  Log P" is  (0.75)(5.0)(1.0) =
      3.8.                       - -
>  No acceptable measured BCF was found.

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      Barrows  et  al.  (1975)  conducted a bioconcentration test on
      benzidine and measured uptake of radioactivity.   Results of
      this  test  were not  used because  the  tissue was  air-dried
      before analysis.  Also, metabolites might have caused the BCF
      to be too high.
>  No measured BAF was found.
3,4-BENZOFLUORANTHENE     [CAS#: 205-99-2]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                6.12          MedChem Calc
    :  A value of 6.12 was  selected as a "typical Log P",  from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =27,214
           Normalized BCF (at 1.0% lipids) =  3,581
           Food Chain Multiplier = 75
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical  Log  P" is  (3,581) (5.0) (75) =
      1,342,875.

      Note:  Field  data   (Burkhard,   unpublished)   resulted  in
            predicted BAFs from 17  to  228  for four  PAHs with three
            and four rings  for  fish with  5.0  % lipids.  It seems
            unlikely that  PAHs with  five rings  will  have  BAFs
            greater than 1000.


>     No measured BCF or BAF was found.
11.12-BENZOFLUORANTHENE    [CAS#: 207-08-9]

>     Predicted BAF based on Log P:
      The following value was found for Log P:
                6.12          MedChem Calc
      A value of  6.12 was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 27,214
           Normalized BCF (at 1.0% lipids) =  3,581
           Food Chain Multiplier = 75
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typi_cal  Log  P" is  (3, 581) (5. 0) (75) =
      1,342,875.

      Note:  Field  data   {Burkhard,   unpublished)   resulted   in
            predicted BAFs from 17 to  228  for  four PAHs with three

                                8

-------
            and four rings  for  fish with 5.0  % lipids.  It seems
            unlikely  that   PAHs  with  five  rings  will  have BAFs
            greater than 1000.
      No measured BCF or BAF was found.
1.12-BENZOPERYLENE     [CAS#: 191-24-2]

>     Predicted BAF based on Log P:
      The following values were found for Log P:
                6.58          MedChem Calc
                7.10          Miller et al.  1985
                7.10          Isnard and Lambert 1989
      A value of 6.84 was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 100,000
           Normalized BCF (at 1.0% lipids) =  13,158
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log  P" is  (13,158) (5.0) (1.0)
      = 65,790.

      Note: Field   data   (Burkhard,   unpublished)   resulted   in
            predicted BAFs from 17 to  228  for four  PAHs with three
            and four rings  for  fish with  5.0  %  lipids.  It seems
            unlikely  that  PAHs with  five  rings  will have  BAFs
            greater than 1000.


>     No measured BCF or BAF was found.
BENZC-ralPYRENE     [CAS#: 50-32-8]

>     Predicted BAF based on Log P:
      The following values were found for Log P:
                5.97          MedChem Star
                6.12          MedChem Calc
                5.98          Miller et al. 1985
                6.00          Isnard and Lambert 1989
      A value of 6.02  was selected as a "typical Log P",  from which
      the following were obtained:
           Predicted  BCF   (at 7.6% lipids) = 22,688
           Normalized BCF  (at 1.0.% lipids) =  2,985
           Food Chain Multiplier. = 67
      For 5.0% lipids at trophic level 4 the predicted  HHBAF that
      is calculated from the "typical Log P" is  (2, 985) (5.0) (67) =
      999,975.

-------
      Note: Field  data   (Burkhard,   unpublished)   resulted  in
            predicted BAFs from 17 to 228 for four PAHs with  three
            and four rings for fish with 5.0 % lipids.  It  seems
            unlikely that PAHs  with  five  rings will  have BAFs
            greater than  1000.
      No measured  BCF with  a measured value of percent lipids was
      found.

      No measured  BAF was found.
BERYLLIUM     [CAS#:  7440-41-7]

      Barrows et  al.  (1980)  obtained a BCF of 19 based on whole-
      body  measurements on  bluegills.   A BCF based  on edible-
      portion might be  lower, but the predicted HHBAF will be set
      at 19 for lack of additional information.
BIS(2 -CHLOROETHOXY) METHANE     [CAS#: 111-91-1]

>     Predicted BAF based on Log P:
      The following value was  found for Log P:
                0.75          MedChem Calc
      A value of 0.75  was selected as a "typical  Log  P*, from which
      the following were obtained:
           Predicted  BCF  (at 7.6% lipids) =1.56
           Normalized BCF (at 1.0% lipids) = 0.205
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (0.205) (5.0) (1.0)
      = 1.0.
>  No measured BCF or BAF was found.
BIS(2-CHLOROETHYL) ETHER     [CAS#: 111-44-4]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.29          MedChem Star
                0.996         MedChem Calc
                1.12          Ishard and Lambert 1989
      A value of 1.14 was selected as a "typical  Log P", from which
      the following were obtained:

                                10

-------
           Predicted BCF  (at 7.6% lipids) =3.17
           Normalized BCF (at 1.0% lipids) = 0.417
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P1 is (0.417)(5.0)(1.0)
      = 2.1.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       11      4.8      2.29     Barrows et al.  1980

      Geometric mean normalized BCF = 2.29

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from  the geometric mean  normalized  BCF  is
      (2.29) (5.0) (1.0)  = 11.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.   Thus this  BCF and
            the resulting predicted HHBAF might  be too high.


>  No measured BAF was found.
BIS(2-CHLOROISOPROPYL)  ETHER    [CAS#: 108-60-1]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                1.61          MedChem Calc
      A value of 1.61 was selected as a "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =7.45
           Normalized BCF (at 1.0% lipids) = 0.980
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (0.980)(5.0)(1.0)
      = 4.9.
>  No measured BCF or BAF was found.



BROMOFORM    [CAS#: 75-25-2]

>  Predicted BAF based on Log P:

                                11

-------
       The  following  value was  found  for  Log  P:
                2.372          MedChem Calc
       A value of 2.37 was selected as a "typical Log P*, from which
       the  following  were obtained:
            Predicted BCF  (at  7.6% lipids) =29.7
            Normalized  BCF  (at  1.0% lipids) = 3.91
            Food Chain  Multiplier  =1.0             (
       For  5.0% lipids  at trophic  level 4  the predicted HHBAF that
       is calculated  from the "typical Log P"  is  (3.91)(5.0) (1.0)  =
       20.
>  No measured BCF or BAF was found.
4-BROMOPHENYL PHENYL ETHER
                           [CAS#: 101-55-3]
   Predicted BAF based on Log P:
      The following value was found for Log i?:
                5.24          MedChem Calc
      A value of 5.24  was selected as a "typical Log P",  from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 5,490
           Normalized BCF (at 1.0% lipids) =   722.4
           Food Chain Multiplier =4.3
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (722 .4) (5.0)(4.3)
      = 15,532.
>  No measured BCF or BAF was found.
BUTYL BENZYL PHTHALATE
                       [CAS#: .85-68-7]
                                                       from which
Predicted BAF based on Log P:
   The following values were found for Log P:
             4.91          MedChem Star
             4.87          MedChem Calc
             4.05          Isnard and Lambert 1989
   A value of 4.7 was  selected as a "typical Log P"
   the following were obtained:
        Predicted BCF  (at 7.6%  lipids) = 2,056
        Normalized BCF (at 1.0%  lipids) =   270.5
        Food Chain Multiplier =1.4
   For 5.0% lipids at trophic level 4 the predicted HHBAF that
   is calculated from the "typical Log P" is (270.5) (5.0) (1.4)
   = 1,894.
                                12

-------
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       663     4.8     138.1     Barrows et al. 1980

      Geometric mean normalized BCF = 138.1

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from  the geometric mean  normalized  BCF  is
      (138.1)(5.0)(1.4)  = 967.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
CADMIUM    [CAS#: 7440-43-9]

   Based on dry-weight measurements on adult brook trout, Benoit et
   al. (1976)  obtained BCFs of 15  for muscle, 300  to 600 for whole
   body,  and 19,000 for kidney.  Using a conversion factor of 0.2
   (Stephan  et  al.  1985),  the  wet-weight  BCF  for  muscle  is
   estimated to be 3 .   Sangalang and Freeman  (1979) obtained a BCF
   of  17  for  muscle  of  brook trout.   Calamari et al.  (1982)
   obtained a  BCF of  2.3  for muscle  of  rainbow trout.   Data
   presented by Murphy et  al.  (1978) can be used to calculate BAFs
   of  0.3  and 1.6 based  on  increases  in  the  concentrations  of
   cadmium in  water and  in muscle of  bluegills  and  bass  in  a
   contaminated pond.   The geometric mean of 0.3 and 1.6 is 0.69,
   which will be used as the predicted HHBAF.
CARBON TETRACHLORIDE    [CAS#:  56-23-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.83          MedChem Star
                2.875         MedChem Calc
                2.64          Isnard and Lambert 1989
      A value of 2.8 was  selected as a  "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% iipids) =64.9
           Normalized BCF (at 1.0% lipids) =  8.54
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that

                                13

-------
       is calculated  from the "typical Log P" is (8.54) (5.0) (1.0) =
       43.


>  Predicted BAF based on  Log  P  and  measured BCF:

       BCF  .   % L     Norm BCF  Reference
                       (1.0% L)

       30      4.8      6.25     Barrows et al. 1980

      Geometric mean normalized  BCF  = 6.25

      For 5.0% lipids  at trophic level 4 the predicted HHBAF that
      is  calculated from  the geometric  mean  normalized  BCF  is
       (6.25)(5.0)(1.0)  = 31.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this  BCF and
            the resulting  predicted  HHBAF might be too high.


>  No measured BAF was  found.
CHLORDANE    [CAS#: see below]

   There are several isomers of chlordane and so the following were
   all considered to be of interest:
      CAS# :      57-74-9     Chlordane, mixture of cis and trans
      CAS#:    5103-71-9     alpha-chlordane; cis-chlordane
      CAS#:    5103-74-2     beta-chlordane; trans-chlordane
      CAS#:    5566-34-7     gamma-chlordane
      CAS#:   12789-03-6     Chlordane, technical
   All of these are  expected to have similar values for Log P, BCF,
   and BAF.


>  Predicted BAF based on Log P:
      The following values were found for Locr P:
                5.54          MedChem Calc
                6.0           Isnard and Lambert 1989
      A value  of 5.77  was  selected as  a  "typical  Log  P",  from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids)  = 14,398
           Normalized BCF (at 1.0% lipids)  =  1,894
           Food Chain Multiplier = 33
      For 5.0% lipids at trophic, level 4 the predicted HHBAF that
      is calculated from the  "typical  Log P" is  (1,894) (5.0) (33) =
      312,510.
                                14

-------
>  Predicted BAF based on Log P and measured BCF:

        BCF    % L    Norm BCF   Reference
                      (1.0% L)

       7,097   3.2     2,218     Goodman et al.  1978
      15,687   3.6     4,357     Parrish et al.  1978
      37,800   7.6     4,974     Veith et al.  1979b
      18,762   7.28    2,577     Oliver and Niimi  1985
      17,321   7.28    2,379     Oliver and Niimi  1985

      Geometric mean normalized BCF = 3,118

      The BCFs of 18,762 and 17,321  from Oliver and Niimi (1985)
      are for the alpha and gamma  isomers,  respectively;  both of
      these values and  the  value for % lipids are  the geometric
      means from two exposures.  The BCFs  might not be at steady
      state.   For  5.0% lipids at  trophic  level 4  the predicted
      HHBAF that is calculated from the geometric  mean normalized
      BCF is (3,118) (5.0) (33)  = 514,470.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)

         BAF      % L  Norm BAF  Species    Reference
                       (1.0% L)

      1,400,000    8   175,000   R. trout   Oliver and Niimi 1985
         76,000    8     9,500   R. trout   Oliver and Niimi 1985
        558,824   11    50,802   Salmon     Oliver and Niimi 1988

      Geometric mean normalized BAF = 43,875.

      The BAF of  1,400,000  is  for the alpha  isomer,  whereas the
      other two are for the gamma isomer.   The range of the three
      normalized BAFs is a factor of  18, but there is no basis for
      choosing a subset of these  three values.  For 5.0% lipids at
      trophic  level  4  the predicted  HHBAF  is   (43,875)(5.0)  =
      219,375.
CHLOROBENZENE    [CAS#: 108-90-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.84          MedChem Star
                2.855         MedChem Calc
                2.83          Hammers et al. 1982
                2.98          Miller et al.  1985
                2.80          Bobra et al. 1985

                              •  15

-------
                 2.98          Isnard and Lambert  1989
                 2.898         de Bruijn et  al.  1989
       Values  ranging from 2.18 to 2.98 were cited by Brooke et al.
       (1990).   A value of 2.88 was  selected as  a  "typical Log P",
       from which the following were obtained:
            Predicted BCF   (at  7.6%  lipids)  =75.0
            Normalized BCF (at  1.0%  lipids)  = 9.87
            Food Chain Multiplier =1.0
       For  5.0%  lipids at  trophic level  4  the predicted  HHBAF that
       is calculated  from the 'typical Log P' is  (9.87)(5.0) (1.0)  =
       49.

 >  No  acceptable measured BCF was found.

       A BCF of over 400 was  reported for fish with about 4%  lipids
       by Brooke  and  Call  (manuscript).  The  results were  based on
       uptake of  radioactivity.  Results  of this  test were not used
       because metabolites were detected and probably contributed to
       the  BCF.
>  No measured BAF was found.
p-CHLORO-m-CRESOL     [CAS#: 59-50-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.10          MedChem Star
                3.134         MedChem Calc
                3.10          Veith et al.  1979a
      A value of 3.11  was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids)  = 114.0
           Normalized BCF (at 1.0% lipids)  =  15.0
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log P" is  (15.0)(5.0)(1.0) =
      75.
>  No measured BCF or BAF was found.
CHLORODIBROMOMETHANE    [CAS#: 124-48-1]

>  Predicted BAF based on Log P:.
      The following value was found for Log P:
                2.232         MedChem Calc
      A value of  2.23 was selected as a "typical Log P", from which

                               16

-------
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =23.0
           Normalized BCF {at 1.0% lipids) =  3.03
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (3.03)(5.0) (1.0) =
      15.
>  No measured BCF or BAF was found.
CHLOROETHANE    [CAS#: 75-00-3]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.43          MedChem Star
                1.465         MedChem Calc
      A value of 1.44 was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =5.47
           Normalized BCF (at 1.0% lipids) = 0.720
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (0.720)(5.0)(1.0)
      = 3.6.
>  No measured BCF or BAF was found.
2-CHLOROETHYL VINYL ETHER     [CAS#: 110-75-8]

>  Predicted BAF based on Log P:  •
      The following value was found for Log P:
                0.994         MedChem Calc
      A value of 0.99 was selected as a "typical Log P",  from which
      the following were obtained:
           Predicted BCF   (at 7.6% lipids) =2.41
           Normalized BCF  (at 1.0% lipids) = 0.317
           Food Chain Multiplier  =1.0
      For 5.0% lipids at trophic  level 4  the predicted  HHBAF that
      is calculated from the  "typical Log P" is  (0.317)(5.0)(1.0)
      = 1.6.
>  No measured BCF or BAF was  found".
                                17

-------
CHLOROFORM     [CAS#: 67-66-3]

>  Predicted BAF based on Log  P:
      The following values were found for Log P:
                1.97           MedChem Star
                1.952          MedChem Calc
                1.90           Isnard and Lambert 1989
      A value of 1.94 was selected as a "typical  Log P*,  from which
      the following were obtained:
           Predicted BCF  (at  7.6% lipids) =13.6
           Normalized BCF (at  1.0% lipids) =  1.79
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log  P" is  (1.79)(5.0)(1.0) =
      9.0
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        6      4.8      1.25     Barrows et al. 1980

      Geometric mean normalized BCF = 1.25

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from  the geometric mean  normalized  BCF  is
      (1.25) (5.0) (1.0)  = 6.2.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
2-CHLORONAPHTHALENE    [CAS#: 91-58-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4 .03          MedChem Calc
                4.07          Isnard and Lambert 1989
      A value of 4.05 was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 630.2
           Normalized BCF (at 1.0% lipids) =  82.9
           Food Chain Multiplier" =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log  P" is  (82.9)(5.0)(1.0) =

                                18

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      414.


>  No measured BCF or BAF was found.



2-CHLOROPHENOL     [CAS#: 95-57-8]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.15          MedChem Star
                2.205         MedChem Calc
                2.12          Hammers et al. 1982
                2.16          Isnard and Lambert 1989
      A value of  2.16 was selected as a "typical  Log P', from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 20.25
           Normalized BCF (at 1.0% lipids) =  2.664
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (2.664)(5.0)(1.0)
      = 13.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        214    4.8      44.6     Barrows et al.  1980

      Geometric mean normalized BCF = 44.6

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from the  geometric  mean  normalized  BCF  is
      (44.6) (5.0) (1.0)  = 223.

      Note: This BCF was based on uptake of radioactivity with no
            verification of  the parent chemical.  Thus this BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
4-CHLOROPHENYL PHENYL ETHER    [CAS#: 7005-72-3]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                5.09          MedChem Calc

                               19

-------
                 4.08           Isnard and  Lambert  1989
       A value of 4.6 was selected as a "typical Log P",  from which
       the  following were obtained:
            Predicted BCF   (at  7.6%  lipids)  ==  1,714
            Normalized  BCF  (at  1.0%  lipids)  =    225.5
            Food  Chain  Multiplier  =1.3
       For  5.0% lipids  at trophic  level 4  the  predicted  HHBAF that
       is calculated from the  "typical Log P"  is (225.5)(5.0)(1.3)
       = 1,466.

       Note: Metabolism is  likely  to  reduce the  BCF and  FCM  enough
            to cause the actual BAF  to be less  than 1000.
 >  No  measured BCF with  a  measured value of  percent  lipids was
   found.

 >'  No measured BAF was found.
CHLORPYRIFOS     [CAS#: 2921-88-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.96          MedChem Star
                4.685         MedChem Calc
                4.99          Isnard and Lambert 1989
                5.267         de Bruijn et al.  1989
      A value of 4.97  was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 3,360
           Normalized BCF (at 1.0% lipids) =   442.1
           Food Chain Multiplier =2.6
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (442.1)(5.0) (2 . 6)
      = 5,747.


>  No measured  BCF with a measured  value of percent  lipids was
   found.


>  Eaton et  al.  (1985) found normalized BAFs of. 209  for  the fathead
   minnow and 120 for the bluegill.  The geometric mean of 209 and
   120 is  158.4.  For 5.0% lipids at trophic level 4 the predicted
   HHBAF is  (158.4) (5.0)  =  792.
CHROMIUM    [CAS#: 7440-47-3]


                               20

-------
   BCFs of 0.13 and 2.8 were obtained for muscle of rainbow trout
   by  Buhler   et   al.   (1977)   and  Calamari   et   al.    (1982),
   respectively.  The geometric mean of 0.13 and 2.8  is  0.60, which
   will be used as the predicted HHBAF.
CHRYSENE    [CAS#:  218-01-9]

>  Predicted BAF based on Log P;
      The following values were found for Log P:
                5.664         MedChem Calc
                5.79          Miller et al. 1985
                5.79          Isnard and Lambert 1989
      A value of 5.73 was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 13,388
           Normalized BCF (at 1.0% lipids) =  1,762
           Food Chain Multiplier =23
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log  P' is  (1,762)(5.0)(23) =
      202,630.


>  No measured BCF was found.
   Field data (Burkhard,  unpublished)  resulted in a geometric mean
   BAF of  40 for two  PAHs  with four  rings  for fish with  5.0 %
   lipids.
COPPER    [CAS#: 7440-50-8]

   Benoit (1975) reported'a BCF of zero for copper in muscle of the
   bluegill.  Thus the predicted HHBAF will be set at 0.0.
CYANIDE    [CAS#: 57-12-5]

   No  usable  data  were  found  concerning  bioconcentration  or
   bioaccumulation of cyanide by freshwater fish.
2.4-D    [CAS#: 94-75-7]           :

>  Predicted BAF based on Log P:
      The following values were found for Log P:

                                21

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                 2.81           MedChem Star
                 2.682          MedChem Calc
                 3.00           Isnard  and  Lambert  1989
      A value of 2.83 was selected as  a "typical Log P",  from which
      the  following were  obtained:
           Predicted BCF   (at  7.6%  lipids)  =68.5
           Normalized BCF (at  1.0%  lipids)  =   9.01
           Food  Chain Multiplier  =1.0
      For  5.0% lipids at  trophic  level 4  the predicted HHBAF that
      is calculated from the "typical Log P" is (9.01)(5.0)(1.0)  =
      45.
>  No measured BCF or BAF was found.
ODD   [CAS#: see below]

   There are several isomers of DDD; the common ones are:
      p,p'-DDD; 4,4'-DDD      CAS#:    72-54-8
      0,p'-DDD; 2,4'-DDD      CAS#:    53-19-0
      m,p'-DDD; 3,4'-DDD      CAS#:  4329-12-8
   All of the  isomers, and  all  mixtures  of them,  are expected to
   have similar values for Log P, BCF,  and BAF.


>  Predicted BAF based on Log P:
      The following values were found for Log P:
                6.02          MedChem Star
                6.21          MedChem Calc
                6.02          Veith et  al.  1979a
                6.02          Isnard and Lambert 1989
                6.217         de Bruijn et al.  1989
      Values ranging from 6.02 to 6.21  were cited by de Bruijn et
      al. (1989).  A value  of '6.1- was  selected as a "typical Log
      P", from which the following were obtained:
           Predicted BCF  (at 7.6% lipids)  = 26,242
           Normalized BCF (at 1.0% lipids)  =  3,453
           Food Chain Multiplier = 75
      For 5.0% lipids at trophic level  4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (3,453)(5.0) (75) =
      1,294,875.


>  No measured BCF with fish and with a measured value of percent
   lipids was found.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at  trophic  level 4)


                                22

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       BAF      % L   Norm BAF   Species    Reference
                      (1.0% L)

      892,473   11     81,134    Salmon     Oliver and Niimi 1988

      Geometric mean normalized BAF = 81,134.

      For 5.0%  lipids at  trophic level 4  the  predicted HHBAF is
      (81,134)(5.0) = 405,670.

      Note: This value is probably too high because the fish were
            also exposed  to DDT.   Uptake and metabolism  of  DDT
            probably contributed to the concentration of DDD in the
            fish.
DDE   [CAS#: see below)

   There are several isomers of DDE; the common ones are:
      p,p'-DDE; 4,4'-DDE         CAS#:     72-55-9
      o,p'-DDE; 2,4'-DDE         CASf:   3424-82-6
   All of the  isomers, and  all mixtures  of  them,  are expected to
   have similar values for Log P, BCF,  and BAF.


>  Predicted BAF based on Log P:
      The following values were found for Log P:
                6.51          MedChem Star
                6.936         MedChem Calc
                5.89          Burkhard et al. 1985
                5.69          Isnard and Lambert 1989
                6.956         de Bruijn et al. 1989
      Values ranging from 5.69 to 6.94 were cited by de Bruijn et
      al. (1989).  A value  of  6.4  was  selected as a "typical Log
      P", from which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 45,290
           Normalized BCF (at 1.0% lipids) =  5,959
           Food Chain Multiplier = 98
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P"  is  (5,959)(5.0) (98) =
      2,919,910.


>  Predicted BAF based on Log P and measured BCF:

         BCF      % L   Norm BCF    Reference
                         (1.0% L)

       52,000     7.6     6,842 "   Veith et al. 1979b
      180,000*    9.12   19,737*    Kosian et al. 1981
       11,773**   7.28    1,617**   Oliver and Niimi 1985

                               23

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      *  = extrapolated from 28 days to steady state.

      ** = below steady state; not used in the calculation of the
           geometric mean normalized BCF.

      Geometric mean normalized BCF = 11,621

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated from  the  geometric mean  normalized  BCF  is
      (11,621)(5.0)(98) = 5,694,290.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)

         BAF     % L   Norm BAF    Species  Reference
                       (1.0% L)

      18,000,000   8   2,250,000   Trout    Oliver and Niimi 1985
      11,315,789  11   1,028,708   Salmon   Oliver and Niimi 1988

      Geometric mean normalized BAF = 1,521,379

      For 5.0% lipids  at  trophic level 4 the  predicted  HHBAF  is
      (1,521,3791(5.0)  =7,606,895.

      Note:  This value is probably too high because the fish were
            also exposed  to  DDT.   Uptake  and metabolism  of  DDT
            probably contributed to the concentration of DDE in the
            fish.
DDT   [CAS#: See below]

   There are  several isomers  of DDT  and several pertinent  CAS
   numbers; the common ones are:
      p,p'-DDT; 4,4'-DDT           CAS#:     50-29-3
      o,p'-DDT; 2,4'-DDT           CAS#:    789-02-6
      DDT                          CAS#:  33086-18-9
   All of the  isomers, and  all  mixtures  of  them,  are expected to
   have similar values for  Log  P, BCF, and  BAF.   The values used
   for Log  P,  BCF,  and BAF herein were based only on DDT and not on
   "DDT plus metabolites" because the GLI  human health criterion is
   based on  a  study in   which the  test  organisms  were  fed
   commercial-grade DDT,  which consisted  of  81% p,p'-DDT and 17.9%
   o,p'-DDT.


>  Predicted BAF based on Log P:
      The following values were found for Log P:
                6.36          MedChem Star

                                24

-------
                6.913         MedChem Calc
                6.19          Veith et al. 1979a
                6.38          Hammers et al.  1982
                5.44          Burkhard et al. 1985
                5.75          Isnard and Lambert 1989
                5.98          Isnard and Lambert 1989
                6.914         de Bruijn et al. 1989
      Values ranging from 3.98 to 7.48 were cited by Brooke et al.
      (1990), de  Bruijn et al.  (1989),  and  Eadsforth  and Moser
      (1983).  A value  of  6.2 was  selected as a "typical Log P",
      from which the following were obtained:
           Predicted BCF   (at 7.6% lipids) = 31,477
           Normalized BCF  (at 1.0% lipids) =  4,142
           Food Chain Multiplier = 84
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical Log  P" is  (4,142)(5.0)(84) =
      1,739,640.


>  Predicted BAF based on Log P and measured BCF:

        BCF    % L    Norm BCF   Reference
                      (1.0% L)

      29,400   7.6     3,868      Veith et al. 1979b
      37,000   7.6     4,868      Veith et al. 1979b

      Geometric mean normalized BCF = 4,339

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from  the  geometric  mean normalized  BCF  is
      (4,339)(5.0)(84) = 1,822,380.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)

        BAF      % L   Norm BAF   Species   Reference
                        (1.0%  L)

      4,210,526   11   382,775    Salmon    Oliver and Niimi 1988

      For 5.0%  lipids  at trophic level 4 the predicted HHBAF is
      (382,775)  (5.0)  = 1,913,875; for 7.9% lipids at trophic level
      4 the predicted WLBAF is  (382,775) (7 .9) = 3,023,922.

      A normalized BAF of 382,775 for trophic level 4 corresponds
      to a Log P of 6.2525.  The validity  of this back calculation
      can be demonstrated as  follows:
         For a Log P of 6.2525,  the BCF  that  is predicted  for fish
         containing 7.6% lipids  is  {antilogf(0.79)(6.2525)-0.4]}  =
         34,631.79.  The BAF  that is predicted for fish containing

                                25

-------
         5.0% lipids at trophic level 4 is  (34,631.79/7.6)(5.0)(84)
         = 1,913,862; the BAF that is predicted for fish containing
         7.9% lipids at trophic level 4 is  (34,631.79/7.6) (7.9) (84)
         =  3,023,902.    Both  of these  BAFs  agree well  with the
         values given  above, as they should.
      Thus  for a Log  P of 6.2525,  by using  the FCM of  29 for
      trophic level 3 instead of the FCM of 84 for trophic level 4,
      the WLBAF that is predicted for fish containing 7.9% lipids
      at trophic level 3 is (34,631.79/7.6)(7.9)(29)  = 1,043,966.

      Note: Because  of  metabolism of  DDT  to  DDD  and DDE,  a
            predicted  BAF for DDT that does not take into account
            the effect of metabolism on both the BCF and the FCM is
            likely to  be higher than a measured BAF.  A BAF for
            "DDT  plus  toxic  persistent  metabolites'  should  be
            higher than a BAF for "DDT'.


DEHP    [CAS#: 117-81-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                8.66          MedChem Star
                8.707         MedChem Calc
                4.20          Isnard and Lambert 1989
                7.453         de Bruijn et al.  1989
      Values ranging from 4.20 to 9.64 were cited by  de Bruijn et
      al.   (1989) and Brooke et al.  (1990).   A value of 8.0 was
      selected as a  "typical Log P", from which the following were
      obtained:
           Predicted BCF  (at  7.6% lipids) = 100,000
           Normalized BCF (at  1.0% lipids) =  13,158
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted  HHBAF that
      is calculated  from the "typical Log P" is (13,158) (5.0)  (1.0)
      = 65,790.


>  Predicted BAF based on Log  P and measured BCF:

       BCF     % L    Norm BCF   Reference
                       (1.0% L)

       114     4.8     23.75     Macek et  al. 1979; Barrows et al.
                                 1980

      Geometric mean normalized BCF = 23.75

      For 5.0% lipids at trophic. level 4 the predicted  HHBAF that
      is calculated  from the  "geometric mean normalized BCF"  is
      (23.75) (5.0) (1.0) = 119.
                               26

-------
      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus  this BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
DIAZINON    [CAS#: 333-41-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.81          MedChem Star
                3.707         MedChem Calc
                3.31          Isnard and Lambert 1989
      A value of 3.6 was  selected as a  "typical Log P', from which
      the following were obtained:
           Predicted BCF  (at 7.6%  lipids) = 278.0
           Normalized BCF (at 1.0%  lipids) =  36.6
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical Log  P" is  (36.6) (5.0) (1.0) =
      183.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

      182      3.6     50.56     Goodman et al.  1979
      247.9    8.6     28.83     Tsuda et al.  1989

      Geometric mean normalized BCF = 38.18

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated from  the geometric mean normalized  BCF  is
      (38.18)(5.0)(1.0)  = 191.


>  No measured BAF was found.
1.2:5.6-DIBENZANTHRACENE    [CAS#: 53-70-3]

>  Predicted BAF based on Log P: --:
      The following values were -found for Log P:
                6.50          MedChem Star
                6.838         MedChem Calc
                6.88          Burkhard et al. 1985

                                27

-------
                7.19          Miller  et  al.  1985
                7.19          Isnard  and Lambert 1989
      A value of 6.84 was selected as  a "typical Log P",  from which
      the following were obtained:
           Predicted  BCF  (at 7.6% lipids)  = 100,000
           Normalized BCF (at 1.0% lipids)  =  13,158
           Food Chain Multiplier  =1.0
      For 5.0% lipids at  trophic  level 4 the predicted HHBAF that
      is calculated from the 'typical  Log P'  is (13,158)(5.0)(1.0)
      = 65,790.

      Note: Field  data   (Burkhard,  unpublished)   resulted   in
            predicted BAFs from 17 to  228 for four  PAHs with three
            and four  rings  for  fish with 5,0 % lipids.   It seems
            unlikely  that PAHs  with  five  rings  will  have BAFs
            greater than  1000.
      No measured BCF or BAF was found.
DIBUTYL PHTHALATE    [CAS#: 84-74-2]

>     Predicted BAF based on Log P:
      The following values were found for Log P:
                4.72          MedChem Star
                4.689         MedChem Calc
                5.15          Veith et al. 1979a
      A value of 4.8 was  selected as a  "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 2,466
           Normalized BCF (at 1.0% lipids) =   324.5
           Food Chain Multiplier = 1.6
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (324.5) (5.0)(1.6)
      = 2,596.

      Note:  Metabolism is likely to reduce the BCF and FCM enough
            to cause the actual BAF to be less than 1000.


>  No measured  BCF with a measured value of percent  lipids  was
   found.

>  No measured BAF was found.
1.2-DICHLOROBENZENE    [CAS#:  95-50-1]

>  Predicted BAF based on Log P:

                                28

-------
      The following values were found for Log P:
                3.38          MedChem Star
                3.568         MedChem Calc
                3.34          Hammers et al.  1982
                3.38          Miller et al. 1985
                3.40          Bobra et al. 1985
                3.39          Isnard and Lambert 1989
                3.433         de Bruijn et al.  1989
      Values ranging from 3.34 to 3.65 were cited by de Bruijn et
      al. (1989).  A value of  3.4  was  selected as a 'typical Log
      P", from which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =  193.2
           Normalized BCF (at 1.0% lipids) «   25.4
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the  predicted HHBAF that
      is calculated from the  "typical Log  P" is  (25.4)(5.0) (1.0) =
      127.


>  Predicted BAF based on Log P and measured  BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        89     4.8      18.5     Barrows et al. 1980
       389     8.45     46.0     Oliver and Niimi 1983

      Geometric mean normalized BCF = 29.2

      For 5.0% lipids at trophic level 4 the  predicted HHBAF that
      is  calculated from  the  geometric  mean  normalized  BCF is
      (29.2) (5.0) (1.0) = 146.

      Note: The BCF reported by Barrows et al.  (1980) was based on
            uptake  of  radioactivity with no verification  of the
            parent chemical and therefore might be too high.


>  Data presented by Oliver and Nicol (1982) for lake trout  in Lake
   Ontario and Lake Huron indicate  that the normalized BAF for 1,2-
   dichlorobenzene is greater than  21; the predicted HHBAF for 5.0%
   lipids would be greater than 105.
1. 3-DICHLOROBENZENE     [CAS#: 541-73-1]

>  Predicted BAF based on Log P: - ;
      The  following values were found for Log P:
                3.60          MedChem Star
                3.568         MedChem Calc
                3.46          Hammers et al. 1982

                                29

-------
                 3.48           Miller  et  al.  1985
                 3.40           Bobra et al.  1985
                 3.48           Isnard  and Lambert  1989
                 3.525          de  Bruijn  et  al. 1989
      Values  ranging from 3.38 to 3.95 were cited by Eadsforth and
      Moser  (1983) and de Bruijn et al.  (1989).  A value of 3.5 was
      selected as a "typical Log P",  from which the following were
      obtained:
           Predicted BCF   (at  7.6% lipids)  = 231.7
           Normalized BCF  (at  1.0% lipids)  =  30.5
           Food  Chain Multiplier  =1.0
      For  5.0% lipids at trophic  level 4 the predicted HHBAF that
      is calculated from the 'typical  Log P' is (30.5)(5.0)(1.0)  =
      152.


>  Predicted  BAF based on Log  P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        66     4.8      13.75    Barrows et  al. 1980
       557     8.45     65.9     Oliver and  Niimi 1983
        97     3.79     25.6     Carlson and Kosian 1987

      Geometric  mean normalized BCF = 28.52

      For 5.0% lipids at trophic level 4 the predicted HHBAF  that
      is  calculated from  the  geometric mean  normalized  BCF is
      (28.52) (5.0) (1.0)  = 143.

      Note: The  BCF reported by Barrows et al.  (1980) was based on
            uptake  of radioactivity with no verification  of the
            parent chemical and therefore might be too high.


>  Data presented by Oliver and Nicol  (1982)  for lake trout  in Lake
   Ontario and Lake  Huron indicate that the normalized BAF for 1,3-
   dichlorobenzene is greater  than 57.9; the predicted HHBAF for
   5.0% lipids would be greater than 290.
1. 4-DICHLOROBENZENE    [CAS#: 106-46-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.52          MedChem Star
                3.568         MedChem Calc
                3.41          Hammers et al. 1982
                3.38          Miller et al.  1985
                3 .40          Bobra et al. 1985

                                30

-------
                3.38          Isnard and Lambert 1989
                3.444         de Bruijn et al.  1989
      Values ranging from 3.24 to 3.65 were cited by de Bruijn et
      al.  (1989) and Brooke  et  al.  (1990).  A  value of 3.46 was
      selected as a "typical  Log P", from which  the following were
      obtained:
           Predicted BCF  (at 7.6% lipids)  = 215.5
           Normalized BCF (at 1.0% lipids)  =  28.4
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical Log P- is  (28.4)(5.0)(1.0) =
      142.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        97     5.4      18.0     Konemann and van Leeuwen 1979
        60     4.8      12.5     Barrows et al. 1980
        50     2.3      21.7     Galassi et al. 1982
       516     8.45     61.1     Oliver and Niimi 1983
       674     7.28     92.6     Oliver and Niimi 1985
       110     3.79     29.0     Carlson and Kosian 1987
       296     8.5      34.8     Smith et al.  1990

      Geometric mean normalized BCF =31.1

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from  the  geometric mean  normalized BCF  is
      (31.1)(5.0) (1.0)  = 156.

      Note:  The BCF reported by Barrows  et al.  (1980) was based on
            uptake of radioactivity  with no verification of  the;
            parent chemical and therefore might be too high.


>  Data presented by  Oliver and Nicol (1982)  for lake trout in Lake
   Ontario and Lake Huron indicate that the normalized BAF for 1,4-
   dichlorobenzene is 5.96;  the predicted HHBAF  for  5.0% lipids is
   30.
3,3'-DICHLOROBENZIDINE    [CAS#: 91-94-1]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.51          MedChem Star
                3.637         MedChem Calc
      A value of 3.57 was selected as a "typical  Log P", from which

                                31

-------
      the following were obtained:
           Predicted BCF   (at 7.6% lipids) = 263.2
           Normalized BCF  (at 1.0% lipids) =  34.63
           Food Chain Multiplier = 1,0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P" is  (34.63) (5.0) (1.0)
      = 173.
>  No measured  BCF with a  measured value of  percent  lipids was
   found.

>  No measured BAF was found.
DICHLOROBROMOMETHANE    [CAS#: 75-27-4]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                2.092         MedChem Calc
      A value of  2.09 was selected as a "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =17.8
           Normalized BCF (at 1.0% lipids) =  2.35
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical  Log  P" is  (2.35)(5.0)(1.0) =
      12.
>  No measured BCF or BAF was found.
I.1-DICHLOROETHANE    [CAS#:  75-34-3]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.79          MedChem Star
                1.778         MedChem Calc
                1.79          Isnard and Lambert 1989
      A value of  1.79 was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =10.3
           Normalized BCF (at 1.0% lipids) =  1.36
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical  Log  P" is  (1.36) (5.0)  (1.0) =
      6.8.
                                32

-------
>  No measured BCF or BAF was found.
1.2-DICHLOROETHANE     [CAS#: 107-06-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.48          MedChem Star
                1.458         MedChem Calc
                1.45          Isnard and Lambert 1989
      A value of 1.46 was selected as a 'typical  Log P1, from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =5.67
           Normalized BCF (at 1.0% lipids) =0.75
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log  P' is  (0.75)(5.0)(1.0) =
      3.8.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                       (1.0% L)

        2      4.8     0.417     Barrows et al.  1980

      Geometric mean normalized BCF = 0.417

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from the  geometric  mean  normalized  BCF  is
      (0.417) (5.0) (1.0) - 2.1.

      Note:  This BCF was based on uptake of radioactivity with no
            verification of  the parent chemical.   Thus this BCF and
            the resulting predicted HHBAF might  be too high.'


>  No measured BAF was found.
1,1-DICHLOROETHYLENE    {CAS#:  75-35-4]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.13          MedChem Star
                2.114         MedChem Calc
      A value of 2.12 was selected as a "typical  Log  P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =18.8

                                33

-------
           Normalized  BCF  (at  1.0%  lipids)  =  2.47
           Food Chain  Multiplier  =1.0
      For 5.0% lipids  at trophic  level 4  the predicted HHBAF  that
      is calculated from the "typical Log P* is  (2 .47) (5.0) (1.0)  =
      12.
>  No measured BCF or BAF was  found.
1.2-trans-DICHLOROETHYLENE     [CAS#: 156-60-5]

>  Predicted BAF based on Log  P:
      The following values were found for Log P:
                2.09          MedChem Star
                1.514         MedChem Calc
      A value of 1.80 was selected as a "typical Log P', from which
      the following were obtained:
           Predicted BCF   (at 7.6% lipids) =10.5
           Normalized BCF  (at 1.0% lipids) =  1.38
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (1.38)(5.0) (1.0) =
      6.9
>  No measured BCF or BAF was found.
2,4-DICHLOROPHENOL     [CAS#: 120-83-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.06          MedChem Star
                2.92          MedChem Star
                3.066         MedChem Calc
                3.08          Veith et al.  1979a
                2.92          Hammers et al.  1982
                3.08          Isnard and Lambert 1989
      A value of 3.0 was selected as  a  "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids)  = 93.3
           Normalized BCF (at 1.0% lipids)  = 12.3
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typi-eaJL Log P" is  (12.3) (5.0) (1.0) =
      62.                       .
>  No measured BCF or BAF was found.

                                34

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1.2-DICHLOROPROPANE    [CAS#:  78-87-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.99          MedChem Calc
                2.00          Isnard and Lambert 1989
      A value of 2.0 was  selected as a "typical Log P*, from which
      the following were obtained:
           Predicted BCF  (at 7.6%  lipids)  =15.1
           Normalized BCF (at 1.0%  lipids)  =  1.99
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level  4 the predicted HHBAF that
      is calculated from the  "typical Log P' is (1.99) (5.0) (1.0) =
      10.
>  No measured BCF or BAF was found.
1.3-DICHLOROPROPENE    [CAS#:  542-75-6]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                1.60          MedChem Calc
      A value of  1.60 was selected as a "typical  Log P",  from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =7.31
           Normalized BCF (at 1.0% lipids) =0.96
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log  P" is  (0.96)(5.0) (1.0) =
      4.8.


>  No measured BCF or BAF was found.
DIELDRIN     [CAS#: 60-57-1]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.32          MedChem Star
                2.916         MedChem Calc
                5.11          Hammers et al. 1982
                5.16          Isnard and Lambert 1989
                5.40          de Bruijn et  al.  1989
      Values ranging from 5.16 to 5.30 were cited by de  Bruijn  et
      al. (1989) .   A Log P of 5.25 has been proposed for use in the

                                35

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      derivation of  sediment  quality criteria for dieldrin  {U.S.
      EPA 1991b).  A value  of 5.0 was selected as a  "typical Log
      P', from which  the following were obtained:
           Predicted  BCF  (at 7.6% lipids) =  3,548
           Normalized BCF (at 1.0% lipids) =   466.8
           Food Chain Multiplier  =2.6
      For 5.0% lipids at trophic  level 4 the  predicted HHBAF that
      is calculated from the  "typical Log P"  is  (466.8)(5.0)(2.6)
      = 6,068.


>  Predicted BAF based on Log P and measured  BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0%  L)

      2,300    1.1     2,091     Parrish et a.l. 1974
      4,804    2.14    2,245     Shubat and Curtis 1986

      Geometric mean normalized BCF = 2,167

      For 5.0% lipids at trophic level 4 the  predicted HHBAF that
      is calculated  from the geometric mean normalized  BCF  is
      (2,167) (5.0) (2.6)  = 28,171.


>   No measured BAF was  found.
PIETHYL PHTHALATE    [CAS#:  84-66-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.47          MedChem Star
                2.57          MedChem Calc
                3.15          Veith et al. 1979a
                3.00          Isnard and Laxnbert 1989
      A value of 2.8 was  selected as a "typical  Log Pn, from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 64.9
           Normalized BCF (at 1.0% lipids) =  8.54
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical Log  P" is  (8.54) (5.0) (1.0) =
      43.
>  Predicted BAF based on Log P and'measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

                                36

-------
       117     4.8      24.38    Barrows et al. 1980

      Geometric mean normalized BCF = 24.38

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated from  the geometric mean  normalized  BCF  is
      (24.38) (5.0) (1.0) = 122.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
2.4-DIMETHYLPHENOL
[CAS#:  105-67-9]
   Predicted BAF based on Log P:
      The following values were found for Log P:
                2.30          MedChem Star
                2.77          MedChem Calc
                2.36          Veith et al. 1979a
                2.42          Isnard and Lambert 1989
      A value of 2.48  was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =36.2
           Normalized BCF (at 1.0% lipids) =  4.76
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log  P" is  (4.76) (5.0) (1.0) =
      24.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       150     4.8      31.25    Barrows et al.  1980

      Geometric mean normalized BCF = 31.25

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated from  the geometric mean  normalized  BCF  is
      (31.25)(5.0)(1.0)  = 156.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.   Thus this  BCF and
            the resulting predicted HHBAF might be too high.
                                37

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>  No measured BAF was found.
DIMETHYL PHTHALATE     [CAS#: 131-11-3]

>  Predicted BAF based on Log P:
      The following values were found for Log  P:
                1.56          MedChem Star
                1.52          MedChem Calc
                2.11          Veith et al. 1979a
                2.00          Isnard and Lambert 1989
      A value of 1.8 was selected  as  a  "typical Log P',  from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 10.52
           Normalized BCF (at 1.0% lipids) =   1.38
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log  P" is (1.38)(5.0)(1.0) =
      6.9.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        57     4.8      11.9     Barrows et al. 1980

      Geometric mean normalized BCF = 11.9

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from  the geometric mean  normalized  BCF  is
      (11.9)(5.0)(1.0)  = 60.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this  BCF and
            the resulting predicted HHBAF might be too high.


>  No measured BAF was  found.
4,6-DINITRO-o-CRESOL    [CAS#: 534-52-1]

>  Predicted BAF based on Log P:
      The following value was found.for Log P:
                2.56          MedChem Calc
      A value of 2.56 was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 41.9

                               38

-------
           Normalized BCF '(at 1.0% lipids)  =  5.51
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log P" is (5.51) (5 .0) (1.0) =
      28.
>  No measured BCF or BAF was found.
2.4-DINITROPHENOL     [CAS#: 51-28-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.54          MedChem Star
                1.915         MedChem Calc
                1.51          Isnard and Lambert  1989
      A value of 1.6 was selected as a  "typical Log P", from which
      the following were obtained:
           Predicted BCF   (at 7.6% lipids) =7.31
           Normalized BCF  (at 1.0% lipids) = 0.962
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (0.962)(5.0)(1.0)
      = 4.8.
>  No measured BCF or BAF was found.
2.4-DINITROTOLUENE     [CAS#:  121-14-2]

>  Predicted BAF based on Log P:
      The"following values were found for Log P:
                1.98          MedChem Star
                1.997         MedChem Calc
                2.04          Deneer et al.  1987
      A value of 2.01  was selected as a "typical  Log P", from which
      the following were obtained:
           Predicted  BCF   (at 7.6% lipids) = 15.4
           Normalized BCF  (at 1.0% lipids) =  2.03
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical Log  P" is  (2.03)(5.0) (1.0) =
      10.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference

                              '  39

-------
                       (1.0%  L)

        16.2     8.0      2.025     Deneer  et  al.  1987

      Geometric mean normalized  BCF  =  2.025

      For  5.0%  lipids ac  trophic level 4  the predicted  HHBAF that
      is  calculated  from the geometric  mean  normalized  BCF  is
       (2.025) (5.0)(1.0) = 10.


>  No measured  BAF was  found.
2 . 6-DINITROTOLUENE     [CAS#: 606-20-2]

>  Predicted  BAF based on Log  P:
      The following values were found for Log P:
                1.72           MedChem Calc
                2.02           Deneer et al. 1987
      A value of 1.87 was selected as a "typical Log P',  from which
      the following were obtained:
           Predicted  BCF (at  7.6% lipids) =11.9
           Normalized BCF (at  1.0% lipids) =  1.57
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log  P" is  (1.57)(5.0) (1.0) =
      7.8.


>  Predicted  BAF based on Log  P and measured BCF:

       BCF     % L    Norm BCF   Reference
                       (1.0% L)

       21.9    8.0       2.74     Deneer et al.  1987

      Geometric mean  normalized BCF = 2.74

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from the  geometric  mean  normalized  BCF is
      (2.74) (5.0) (1.0) =14.


>  No measured BAF was found.
DIOCTYL PHTHALATE    [CAS#: 117-84-0]

   For lack  of other  information  and because of  the structural

                                40

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   similarity of the two chemicals, the predicted HHBAF derived for
   DEHP will also be used for dioctyl phthalate.
1.2-DIPHENYLHYDRAZINE     [CAS#: 122-66-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.94          MedChem Star
                2.97          MedChem Calc
      A value of 2.96 was  selected as a "typical  Log P',  from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =86.8
           Normalized BCF (at 1.0% lipids) = 11.4
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical  Log P' is  (11.4) (5.0) (1.0) =
      57.
>  No measured BCF or BAF was found.
ENDOSULFAN    [CAS#:  115-29-7]

   The  HHBAF  derived  below  for  the  alpha  and  beta  isomers of
   endosulfan will be also be used for endosulfan.
alpha-ENDOSULFAN    [CAS#: 959-98-8]
beta-ENDOSULFAN     [CAS#: 33213-65-9]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                3.83          MedChem Star
      A value of 3.83 was selected as a "typical  Log P°,  from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 422.4
           Normalized BCF (at 1.0% lipids) =  55.6
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted  HHBAF that
      is calculated from the "typical  Log  P" is  (55.6) (5 .0) (1.0) =
      278.


>  No measured BCF with fish and with admeasured value  of percent
   lipids was found.

>  No measured BAF was found.

                                41

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ENDOSULFAN SULFATE      [CAS#: 1031-07-8]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                3.067         MedChem Calc
      A value of 3.07  was selected as a 'typical Log P",  from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 106
           Normalized BCF (at 1.0% lipids) =  13.9
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log  P" is  (13.9)(5.0) (1.0) =
      70.
>  No measured BCF or BAF was found.
ENPRIN    [CAS#: 72-20-8]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.32          MedChem Star
                2.916         MedChem Calc
                4.56          Veith et al. 1979a
                4.56          Isnard and Lambert 1989
      A Log P of 4.90 has been proposed for use in the derivation
      of sediment quality criteria  for endrin  (U.S. EPA 1991c).  A
      value of 4.44 was selected as a "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6%  lipids) = 1,281
           Normalized BCF (at 1.0%  lipids) =   168.6
           Food Chain Multiplier =1.1
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (168.6)(5.0)(1.1)
      = 927.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

      4,214    3.73    1,130     Jarvinen and Tyo 1978

      Geometric mean normalized BCF~= 1,-130

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is  calculated  from the  geometric  mean  normalized  BCF is

                                42

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      (1,130)(5.0)(1.1) = 6,215.


>  No measured BAF was found.


ENDRIN ALDEHYDE      [CAS#: 7421-93-4]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                2.38          MedChem Calc
      A value of 2.38 was  selected as a "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) =30.2
           Normalized BCF (at 1.0% lipids) =  3.97
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (3.97) (5.0) (1.0) =
      20.


>  No measured BCF or BAF was found.


ETHYLBENZENE     [CAS#: 100-41-4]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.15          MedChem Star
                3 .32          MedChem Calc
                3.26          Hammers et al. 1982
                3.13          Miller et al. 1985
                3.13          Isnard and Lambert 1989
      A value of 3.22 was  selected as a "typical Log P", from which
      the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 139.3
           -Normalized BCF (at 1.0% lipids) =  18.33
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated  from the "typical Log P" is  (18.33)(5.0) (1.0)
      = 92.

>  No measured BCF or BAF was found.
                                43

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FLUORANTHENE     [CAS#:  206-44-0]

>  Predicted  BAF based on Log P:
      The  following values were found for  Log  P:
                 4.95          MedChem Calc
                 5.22          Miller et  al.  1985
                 5.22          Isnard and Lambert  1989
                 5.155          de  Bruijn  et al. 1989
      Values  ranging from 5.148 to  5.29  were cited by de Bruijn
      et al.  (1989)  and Brooke et al.  (1990),  A  Log P of 5.19
      was  recommended  for use in  the derivation of sediment
      quality criteria  for fluoranthene  (U.S. EPA 1991d).  A
      value of 5.11  was selected  as  a 'typical Log P", from which
      the  following  were obtained:
           Predicted BCF  (at  7.6%  lipids) = 4,334
           Normalized BCF (at  1,0%  lipids) =   570.3
           Food  Chain Multiplier  =3.2
      For  5.0% lipids at trophic  level 4 the predicted HHBAF that
      is calculated  from the  'typical  Log  P' is (570.3)(5.0)(3.2)
      = 9,125.


>  No measured BCF was  found.


>  A geometric mean  BAF of  81 was obtained with fish that
   averaged 4.23  % lipids  (Burkhard,  unpublished), which results
   in a BAF of 96 at 5.0  %  lipids.
FLUORENE    [CAS#: 86-73-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.18          MedChem Star
                4.225         MedChem Calc
                4.17          Hammers et al. 1982
                4.18          Miller et al. 1985
                4.38          Isnard and Lambert 1989
      A value of 4.24 was selected as a 'typical Log P', from
      which the following were obtained:
           Predicted BCF   (at 7.6% lipids) = 890.4
           Normalized BCF  (at 1.0% lipids) = 117.2
           Food Chain Multiplier = 1.1
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P' is  (117.2)(5.0)(1.1)
      = 645.                     _ .
>  Predicted BAF based on Log P and measured BCF:


                                44

-------
       BCF     % L    Norm BCF   Reference
                      (1.0% L)

      1,344    4.6     292.2     Carlson et al. 1979

      Geometric mean normalized BCF = 292.2

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (292.2)(5.0)(1.1)  = 1,607.


>  Field data (BurJchard, unpublished)  resulted in a geometric
   mean BAF of 89 for fish with 5.0 % lipids for two PAHs with
   three rings each.
FLUORIDE    [CAS#: 16984-48-8]

   No usable data were found concerning bioconcentration or
   bioaccumulation of fluoride into muscle of freshwater fish.
GUTHION    [CAS#: 86-50-0]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.75          MedChem Star
                2.62          MedChem Calc
      A value of 2.68 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =52.1
           Normalized BCF (at 1.0% lipids) =  6.86
           Food Chain Multiplier =,1.0
      For 5.0% lipids at trophic level 4  the predicted HHBAF that
      is calculated from the 'typical Log P' is (6.86)(5.0)(1.0)
      = 34.
>  No measured BCF or BAF was found.
HEPTACHLOR    [CAS#: 76-44-8]

   The values for Log P, BCF, and BAF were based only on
   heptachlor and not on "heptachlor plus toxic persistent
   metabolites" because the human health criterion is based on a
   study in which the test organisms were fed heptachlor.


                                45

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>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.605         MedChem Calc
                5.44          Isnard and Lambert  1989
      A value of 5.02 was selected as a 'typical  Log P*,  from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 3,680
           Normalized BCF (at 1.0% lipids) =   484.2
           Food Chain Multiplier =2.6
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P' ia (484.2)(5.0)(2.6)
      = 6,295.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

      2,999    1.1     2,726     Schimmel et al. 1976
      2,980    3.2       931     Goodman et al.  1978
      9,500    7.6     1,250     Veith et al.  1979b

      Geometric mean normalized BCF = 1,469

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (1,469)(5.0)(2.6)  = 19,097.


>  No measured BAF was found.

      Note: Because of metabolism of heptachlor  to heptachlor
            epoxide,  a predicted BAF for heptachlor that does not
            take into account the effect of metabolism on both
            the BCF and the FCM is likely to be  higher than a
            measured BAF.  A BAF for "heptachlor plus toxic
            persistent metabolites" should be higher than a BAF
            for •heptachlor'1.
HEPTACHLOR EPOXIDE   [CAS#: 1024-57-3]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.785         MedChem Calc
                5.40          Isnard and Lambert 1989
      A value of 4.09 was selected as a "typical Log P", from
      which the following were obtained":
           Predicted BCF   (at 7.6% lipids) = 677.8
           Normalized BCF  (at 1.0% lipids) =  89.2

                                46

-------
           Food Chain Multiplier  =1.1
      For 5.0% lipids at  trophic  level 4 the predicted HHBAF that
      is calculated  from  the  "typical Log P" is  (89.2)(5.0)(1.1)
      = 491.


>  Predicted BAF based on Log  P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

      14,400   7.6     1,895      Veith et al. 1979b

      Geometric mean normalized BCF = 1,895

      For 5.0% lipids at  trophic  level 4 the predicted HHBAF that
      is calculated from  the geometric mean normalized BCF is
      (1,895) (5.0)(1.1)  = 10,422.


>  No measured BAF was found.
HEXACHLOROBENZENE     [CAS#: 118-74-1]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                5.31          MedChem Star
                6.42          MedChem Calc
                6.18          Veith et al. 1979a
                5.66          Hammers et al. 1982
                5.47          Miller et al.  1985
                6.86          Burkhard et al.  1985
                5.50          Bobra et al. 1985
                5.66          isnard and Lambert 1989
                5.73          de Bruijn et al. 1989
      Values ranging from 4.13 to 6.48 were cited by Eadsforth
      and Moser (1983) and Hammers et al. (1982).  A value of 5.7
      was selected as a "typical Log P", from  which the
      following were obtained:
           Predicted BCF   (at 7.6% lipids) = 12,677
           Normalized BCF  (at 1.0% lipids) =  1,668
           Food Chain Multiplier = 23
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical Log P" is  (1,668)(5.0)(23)
      = 191,820.
>  Predicted BAF based on Log P and measured BCF:

        BCF    % L    Norm BCF    Reference

                                47

-------
                       (1.0% L)

      18,500   7.6      2,434      Veith et  al.  1979b
      15,660   5.4      2,900      Konemann  and  van  Leeuwen
                                                  1979,1980
      52,000   9.12     5,702      Kosian et al.  1981
      15,492   8.45     1,833      Oliver and Niimi  1983
      22,000   3.79     5,805      Carlson and Kosian 1987
      14,597   6.90     2,116      Nebeker et al.  1989
      27,000   5.00     5,400      Schrap and Opperhuizen 1990

      Geometric mean normalized BCF = 3,366

      For 5.0% lipids at  trophic level  4  the predicted HHBAF that
      is calculated from  the geometric  mean normalized BCF is
     . (3,366)(5.0)(23)  =  387,090.


>  Measured Bioaccumulation Factors:
      (based on field data  for fish at  trophic level 4)

       BAF      % L   Norm  BAF   Species     Reference
                      (1.0% L)

                        45,700    L. trout    Oliver and Nicol 1982
      545,000    7.9    68,987    R. trout    Oliver and Niimi 1983
      253,333   11      23,030    Salmon      Oliver and Niimi 1988

      Geometric mean normalized BAF = 41,718

      For 5.0% lipids at  trophic level  4  the predicted HHBAF is
      (41,718)(5.0)  = 208,590.
HEXACHLOROBUTADIENE     [CAS# 87-68-3]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.78          MedChem Star
                4.30          MedChem Calc
                4.78          Isnard and Lambert 1989
      A value of 4.5 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 1,429
           Normalized BCF (at 1.0% lipids) =   188
           Food Chain Multiplier = 1.2
      For 5.0% lipids at trophic leyel 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (188)(5.0)(1.2) =
      1,128.
                                48

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>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

      9,930    8.45    1,175     Oliver and Niimi 1983

      Geometric mean normalized BCF = 1,175

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (1,175)(5.0)(1.2)  = 7,050.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)

         BAF     % L   Norm BAF    Species  Reference
                       (1.0% L)

        4,000    7.9    506.3      Trout    Oliver and Niimi 1983

      Geometric mean normalized BAF = 506.3

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (506.3)(5.0) = 2,532.
HEXACHLOROCYCLOHEXANE    [CAS#: 608-73-1]
alPha-HEXACHLOROCYCLOHEXANE    [CAS#: 319-84-6]
beta-HEXACHLOROCYCLOHEXANE     [CAS#: 319-85-7]
delta-HEXACHLOROCYCLOHEXANE    [CAS #: 319-86-8]

   All data that were found concerning BCFs and BAFs for
   hexachlorocyclohexane and its isomers are presented for
   lindane.  The same predicted HHBAF will be used for all forms
   of hexachlorocyclohexane.
HEXACHLOROCYCLOPENTADIENE   [CAS#: 77-47-4]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                5.04          MedChem Star
                4.645         MedChem Calc
                5.51          Isnard and Lambert 1989
      A value of 5.2 was selected as a -"typical Log P",  from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 5,105
           Normalized BCF (at 1.0% lipids) =   671.7

                                49

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           Food Chain Multiplier =4.3
      For 5.0% lipids at trophic level 4 the predicted HHBAF  that
      is calculated from the 'typical Log P" is  (671.7)(5.0) (4.3)
      » 14,442.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       29      7.6      3.82     Veith et al. 1979b

      Oliver and Niimi (1985) reported that
      hexachlorocyclopentadiene is not taken up by fish.
      Podowski et al. (1991) found that hexachlorocyclopentadiene
      is metabolized by fish.

      Geometric mean normalized BCF =3.82

      For 5.0% lipids at trophic level 4 the predicted HHBAF  that
      is calculated from the geometric mean normalized BCF is
      (3.82) (5.0) (4.3)  = 82.


>  No measured BAF was found.
HEXACHLOROETHANE    [CAS# 67-72-1]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.14          MedChem Star
                4.61          MedChem Calc
                3.93          Isnard and Lambert 1989
      A value of 4.2 was selected as a "typical Log P*, from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 827.9
           Normalized BCF (at 1.0% lipids) = 108.9
           Food Chain Multiplier =1.1
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (108.9) (5.0) (1.1)
      = 599.
   Predicted BAF based on Log P and measured E5CF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

      139      4.8     28.96     Barrows et al. 1980

                              •  50

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      782.3    8.45    92.58     Oliver and Niimi 1983

      Geometric mean normalized BCF = 51.78

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (51.78)(5.0)(1.1) = 285.

      Note: The BCF reported by Barrows et al. (1980) was based
            on uptake of radioactivity with no verification of
            the parent chemical and might be too high.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)

         BAF     % L   Norm BAF    Species  Reference
                       (1.0% L)

        1,500    7.9    189.9      Trout    Oliver and Niimi 1983

      Geometric mean normalized BAF = 189.9

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (189.9)(5.0) » 950.
INDENO[1.2,3-cd1PYRENE     [CAS#: 193-39-5]

>  Predicted BAF based on Log P:
     1 The following value was found for Log P:
                6.584         MedChem Calc
      A value of 6.58 was selected as a 'typical Log P', from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 62,835
           Normalized BCF (at 1.0% lipids) =  8,268
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P' is (8,268)(5.0)(1.0)
      = 41,340.

      Note:  Field data  (Burkhard, unpublished) resulted in
            predicted BAFs from 17 to 228 for four PAHs with
            three and four rings for fish with 5.0 % lipids.  It
            seems unlikely that PAHs with five rings will have
            BAFs greater than 1000.


>     No measured BCF or BAF was found.
                                51

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IRON     ICAS#: 7439-89-6]

      No uMble data were found concerning bioconcentration or
      bioaccunulation of iron by  freshwater fish.
ISOPHORONE   fCAS#: 78-59-1]

>     Predicted BAF based on Log P:
      The following values were found for Log P:
                2.22          MedChem Calc
                1.67          Isnard and Lambert 1989
      A value of 1.8 was selected as a "typical Log P', from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =10.5
           Normalized BCF (at 1.0% lipids) =  1.38
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P' is (1.38) (5.0)(1.0)
      = 6.9.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        7      4.8      1.46     Barrows et al. 1980

      Geometric mean normalized BCF = 1.46

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (1.46)(5.0} (1.0) =7.3.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this BCF
            and the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
LEAD    [CAS#: 7439-92-1]

   Data presented by Atchison et al-,  (1977) can be used to
   calculate a BAF of 45.7 based on" increased concentrations of
   lead in water and in the whole body of bluegills.  Data
   presented by Murphy et al. (1978) can be used to estimate that
   BAFs for cadmium and zinc for muscle of the bluegill are about

                                52

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   0.166 of those for the whole body of the bluegill.  Thus the
   BAF for lead in muscle of the bluegill can be estimated to be
   (45.7)(0.166) = 7.6, which will be used as the predicted
   HHBAF.
LINDANE

   Lindane is the gamma isomer of hexachlorocyclohexane, which is
   the pesticide "BHC".   Thus the following were all considered
   to be of interest:
      Hexachlorocyclohexane (HCCH,  HCH)    CAS#:  608-73-1
      alpha-HCCH                          CAS#:  319-84-6
      beta-HCCH                           CAS#:  319-85-7
      gamma-HCCH (lindane)                CAS#:   58-89-9
      delta-HCCH                          CAS#:  319-86-8
   All of these, and all of their mixtures, are expected to have
   similar values for Log P, BCF, and BAF.  Because sufficient
   data are available for lindane,  values for the other isomers
   are given for comparison purposes only.


>  Predicted BAF based on Log P:
      The following values were found for Log P for lindane:
                3.61          MedChem Star
                3.72          MedChem Star
                3.75          MedChem Calc
                3.85          Isnard and Lambert 1989
                3.69          de Bruijn et al.  1989
      MedChem contains Star Log P values of 3.80,  3.78, and 4.14
      for the alpha, beta, and delta isomers,  respectively.
      Isnard and Lambert  (1989) and de Bruijn et al. (1989) cited
      Log P values of 3.77 to 3,96 for the alpha and beta
      isomers.  A value of 3.7 was selected as  a "typical Log P",
      from which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 333.4
           Normalized BCF (at 1.0% lipids) =  43.87
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P1 for lindane is
      (43.87)(5.0)(1.0)  = 219.


>  Predicted BAF based on Log P and measured BCF for lindane:

       BCF    % L     Norm BCF   Reference
                      (1.0% L)

       180    7.6       23.68   "Veith et al.  1979b
       420    2.65     158.5     Rogers et al.  1983
      1549    7.28     212.8     Oliver and Niimi 1985

                                53

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      Geometric mean normalized  BCF  =  92.78

       [Oliver and Niimi  (1985) also  reported a normalized BCF of
      269.2 for alpha-BHC;  this  value  and the one given above
      front Oliver and Niimi (1985) are means of two exposures.
      Canton et al.  (1975,1978)  reported normalized BCFs of 45
      and 180.]  For 5.0% lipids at  trophic level 4 the predicted
      HHBAF that is calculated from  the geometric mean normalized
      BCF is (92.78)(5.0) (1.0) = 464.
   Measured Bioaccumulation Factors for Lindane:
       (based on field data for fish at trophic level 4)

       BAF     % L    Norm BAF   Species    Reference
                       (1.0% L)

      1,000     8      125.      R. trout   Oliver and Niimi 1985
      9,333    11      848.5     Salmon     Oliver and Niimi 1988

      Geometric mean normalized BAF = 325.7.

       [Oliver and Niimi  (1985,1988) also reported normalized BCFs
      of 87 and 487 for alpha-BHC.  Both values for alpha-BHC are
      lower than the corresponding values for lindane; in
      addition, both values reported in 1985 are lower than the
      corresponding values reported in 1988.J  For 5.0% lipids at
      trophic level 4 the predicted HHBAF is (325.7)(5.0)  =
      1,628.
            [CAS#: 121-75-5]

   Predicted BAF based on Log P:
      The following values were found for Log P:
                2.36      '    MedChem Star
                1.756         MedChem Calc
                2.89          Isnard and Lambert 1989
      A value of 2.4 was selected as a •'typical Log P', from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =31.3
           Normalized BCF (at 1.0% lipids) =  4.12
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (4.12)(5.0)(1.0)
      = 21.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference

                                54

-------
                      (1.0% L)

      <25—-   3.6     <6.9      Parrish et al.  1977
       37i*   8.6      4.40     Tsuda et al.  1989

      Geometric mean normalized BCF =4.40

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (4.40)(5.0)(1.0) = 22.
>  No measured BAF was found.
MERCURY    [CAS#: 7439-97-6]

1.  The GLI human health criterion and the GLI wildlife criterion
    for "mercury* are both based on the toxicity of methylmercury
    [CAS#: 2296-92-6], whereas measurements of mercury in water
    usually determine "total  mercury".   Therefore the predicted
    HHBAF and WLBAF for "mercury" will be derived to relate the
    concentration of methylmercury in  fish at trophic levels 3
    and 4 in the Great Lakes  to the concentration of total
    mercury in the water column.  Although the best definition of
    the term "total mercury"  is probably "the sum of inorganic
    mercury and organic mercury", the  concentration of
    methylmercury is often assumed to  be a good approximation for
    the concentration of "organic mercury".   In practice,  all of
    these terms are operationally defined in terms of the
    analytical methods that are used to measure them in the water
    column and in fish.

2 .  Although methylmercury constituted less than 10% of the total
    mercury in the water column- in. various portions of a Canadian
    river system that had been contaminated with mercury (Parks
    et al. 1989), Kudo et al. (1982) found that 33% of the
    mercury in the Ottawa River was methylmercury.  Gill and
    Bruland (1990) reported that at least 17% of the mercury in
    Lake Erie was organo-mercury.  Thus 25% would seem to be a
    reasonable estimate of the percent of the total mercury that
    is methylmercury in the water column in the Great Lakes.

3.  A reasonable estimate of  the BCF for inorganic mercury for
    freshwater fish is 2,998, which is the geometric mean of
    1,800 and 4,994; these two BCFs are given on page 46 of the
    U.S. EPA criteria document for-mercury (U.S. EPA 1985).  Both
    of these BCFs are for whole body,  but other data discussed in
    the criteria document indicate that BCFs based on whole body
    and edible portion should be similar  for mercury.  This BCF
    of 2,998 relates the concentration of inorganic mercury in

                                55

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    the water column to the concentration of total mercury in
    fish.   (The BCF of 4,994 was used in the freshwater
    calculations for inorganic mercury on page 47 in the criteria
    document because the FDA action level is applied on a
    speci««-by-3pecies basis.)

4.  As explained in the U.S. EPA criteria document (U.S. EPA
    1985), Olson et al. (1975) and McKim et al. (1976)  both found
    that the BCF for methylmercury was inversely related to the
    concentration in the water.  It is therefore appropriate to
    use the BCFs obtained at the lowest tested concentrations.
    Thus the most appropriate freshwater BCFs to use are 81,667
    from Olson et al. (1975) and 33,333 from McKim et al.  (1976),
    which results in a geometric mean BCF of 52,175 for
    methylmercury.   This BCF of 52,175 relates the concentration
    of methylmercury in the water column to the concentration of
    total mercury in fish.  (A BCF of 81,700 was used in the
    freshwater calculations for methylmercury on page 47 in'the
    criteria document because the FDA action level is applied on
    a species-by-species basis.)

5.  Based on paragraphs 2, 3,  and 4 above,  a weighted average BCF
    that can be used to relate the concentration of total mercury
    in the water column to the concentration of total mercury in
    fish in the Great Lakes can be estimated to be (0.75)(2,998)
    + (0.25)(52,175)  = 2,248 + 13,044 = 15,292.  (When used with
    the concentrations of inorganic mercury [calculated as 'total
    mercury minus methylmercury"]  and methylmercury in Table 1 of
    Parks (1988),  the BCFs of 2,998 and 52,175 give reasonably
    good estimates  of the concentration of  total mercury in 1+
    perch,  which are not predatory fish.)

6.  In bodies of fresh water with pH between 6.5 and 9.0,
    methylmercury constitutes about 90%,  on the average, of the
    total mercury in large fish (Baluja et  al.  1983;  Cappon and
    Smith 1981;  Hattula et al.  1978; Hildebrand et al.  1980;
    Huckabee et  al.  1979;  Kudo et al.  1978;  Luten et  al. 1980;
    Paasivirta et al. 1981,1983).   The average percentage might
    be even higher  for bodies of fresh water with pH lower than
    6.5 (Grieb et al. 1990).  Cappon (1984),  however,  reported
    that methylmercury constituted about  70% of the total mercury
    in salmonids in Lake Ontario.

7.  If there was no transformation of inorganic mercury to
    methylmercury or vice versa during or after bioconcentration,
    the calculations presented in paragraph 5 above predict that
    the resulting percent methylmercury in  fish should be
    (100)(13,044)/(15,292) = 85.3%.  This is reasonably good
    agreement with  the percentages' given in item 6.  (In place of
    the assumption  of no transformation;  it might be assumed that
    transformation  occurs in both cases and results in a "steady
    state"  or "equilibrium11 in which 85.3%  of the total mercury

                               56

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    in fish is methylmercury, regardless of whether the form in
    the water was inorganic mercury or methylmercury.)

8.  The BCF of 15,292 relates the concentration of total mercury
    in the water column (assuming that 25% of the total mercury
    in the water column is methylmercury) to the concentration of
    total mercury in fish.  Based on the assumption that 85.3% of
    the total mercury in fish is methylmercury, a BCF of
    (15,292)(0.853)  = 13,044 can be used to relate the
    concentration of total mercury in the water column of the
    Great Lakes to the concentration of methylmercury in fish due
    to bioconcentration.  (Using a BCF of 13,044 to relate total
    mercury in the water column to methylmercury in fish is
    equivalent to estimating that methylmercury constitutes 25%
    of the total mercury in the water column and then using a BCF
    of 52,175 to relate methylmercury in the water column to
    methylmercury in fish.)

9.  For predatory fish,  accumulation of total mercury from food
    can add to the accumulation of total mercury from the water
    column.  The following predator-prey factor increases in
    total mercury have been found for fish:
          7.7 to 9.2         MacCrimmon et al. 1983
          8 and 15           Mathers and Johansen 1985
          up to 8.4           Wren et al. 1983
          up to 6 and 13     Skurdal et al. 1985
          2.9                Parks 1988
          6.4                Cope et al. 1990
    It would seem reasonable to use a factor of 10 to estimate
    the importance of the food chain effect for some species.  If
    the ratio of total mercury to methylmercury does not change
    substantially from prey to predator, the factor of 10 can be
    applied to methylmercury.

10. Based on paragraphs 8 and 9 above, a reasonable estimate of
    the BAF to be applied to total, mercury in the water column in
    the Great Lakes  is  (13,044)(10) = 130,440.  Thus the
    predicted HHBAF is 130,440 and is intended to relate the
    concentration of methylmercury in trophic level 4 fish in the
    Great Lakes to the concentration of total mercury in the
    water column.

11. As stated in paragraph 3 above, it appears that BCFs and BAFs
    based on whole body and edible portion should be similar for
    mercury.   Therefore, the predicted HHBAF that was derived for
    fish at trophic level 4 will also be used as the predicted
    WLBAF for fish at trophic level 4.  On the assumption that
    the FCM for mercury increases .geometrically with trophic
    level, the FCM will be assumed 60 be 2.154 for trophic level
    2, (2.154)(2.154) = 4.64 for trophic level 3, and
    (2.154)(2.154)(2.154) = 10 for trophic level 4.  Thus for
    mercury the predicted WLBAF for fish at trophic level 3 is

                                57

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     (13,044) (4.64)  = 60,524.
                fCAS#:  72-43-5]
 >    Predicted BAF based on Log P:
       The  following values were found for Log P:
                 5.08          MedChem Star
                 5.325          MedChem Calc
                 4.3           Isnard and Lambert  1989
       A value of 5.0 was selected  as a 'typical Log  P',  from
       which  the  following were obtained:
           Predicted BCF  (at  7.6% lipids)  =  3,548
           Normalized  BCF (at  1.0% lipids)  =   467
           Food  Chain  Multiplier =2.6
       For  5.0% lipids  at trophic level 4  the  predicted HHBAF that
       is calculated from the  'typical Log P"  is (467) (5.0) (2 .6) =
       6,071.


 >  Predicted  BAF based on Log  P and measured  3CF:

        BCF     % L     Norm BCF  Reference
                       (1.0% L)

        151    3.6         42     Parrish  et al . 1977
       8,300    7.6      1,092     Veith et al.  1979b

       Note: The  two BCFs  differ substantially.

       Geometric  mean normalized BCF = 214

       For 5.0% lipids  at  trophic level 4  the predicted HHBAF that
       is calculated from the geometric mean normalized BCF is
       (214) (5.0)  (2.6)  =  2,782.


 >  No  measured BAF  was  found.
METHYL BROMIDE     [CAS#: 74-83-9]

>  Predicted BAF based on Log  P:
      The following values were  found  for Log P:
                1.19           MedChem  Star
                1.076          MedChem  Calc
      A value of 1.13 was selected" as  a."typical Log P", from
      which the following were obtained:
           Predicted BCF  (at  7.6% lipids) =3.11
           Normalized BCF (at  1.0% lipids) = 0.409

                                58

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           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical Log P» is  (0.409)(5.0)(1.0)
      = 2.0.
>  No measured BCF or BAF was found.
METHYL CHLORIDE
                    [CAS#: 74-87-3]
   Predicted BAF based on Log P:
      The following values were found for Log P:
                0.91          MedChem Star
                0.936         MedChem Calc
      A value of 0.92 was selected as a "typical Log P', from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =2.12
           Normalized BCF (at 1.0% lipids) =0.28
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P' is  (0 .28) (5.0) (1 . 0)
      = 1.4.
>  No measured BCF or BAF was found.
METHYLENE CHLORIDE
                      [CAS#: 75-09-2]
   Predicted BAF based on Log P:
      The following values were found for Log P:
                1.25          MedChem Calc
                1.25          Isnard and Lambert 1989
      A value of 1.25 was selected as a 'typical Log P', from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =3.87
           Normalized BCF (at 1.0% lipids) = 0.509
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (0 . 509) (5 .0) (1 . 0)
      = 2.5.
>  No measured BCF or BAF was found.
MI REX
          [CAS# 2385-85-5]
                                59

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>  Predicted BAF based on Log P:
      The following values were found for Log P:
                5.28          MedChem Star
                4.65          MedChem Calc
                6.89          Isnard and Lambert 1989
      A value of 5.3 was selected as a 'typical Log P*, from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 6,124
           Normalized BCF (at 1.0% lipids) =   805.8
           Food Chain Multiplier =5.8
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P' is (805.8)(5.0)(5.8)
      = 23,368.


>  Predicted BAF based on Log P and measured BCF:

       BCF     . % L   Norm BCF   Reference
                      (1.0% L)

      18,100    7.6    2,382     Veith et al. 1979b
         740*   7.6       97*    Oliver and Niimi  1985
      20,417    6.5    3,141     Gobas et al. 1989

      * = below steady state; not used in the calculation of the
          geometric mean normalized BCF.

      Geometric mean normalized BCF = 2,735

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (2,735) (5.0) (5.8)  = 79,315.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)

         BAF     % L  Norm BAF   Species    Reference
                      (1.0% L)

      15,000,000   8  1,875,000  Trout      Oliver and Niimi 1985
       5,806,452  11    527,859  Salmonids  Oliver and Niimi 1988

      Geometric mean normalized BAF = 994,855

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (994,855) (5.0) = 4,974,275.

      Note:  Both of the measured, BAFs are much larger than both
            of the predicted BAFs.
                                60

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NAPHTHALENE     [CAS#: 91-20-3]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.30          MedChem Star
                3.316         MedChem Calc
                3.37          Veith et al. 1979a
                3.45          Hammers et al. 1982
                3.35          Miller et al. 1985
                4.70          Isnard and Lambert 1989
      Values ranging from 3.01 to 3.45 are cited by Eadsforth and
      Moser (1983).  A value of 3.36 was selected as a "typical
      Log P',  from which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 179.6
           Normalized BCF (at 1.0% lipids) =  23.6
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (23.6)(5.0)(1.0)
      = 118.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       97.5    2.44     39.96    Rogers et al.  1983
       27.6    4.04      6.83    Brooke and Call,  ras.

      Geometric mean normalized BCF = 16.5

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (16.5) (5.0) (1.0)  = 82.

      Note: Brooke and Call measured the BCF using radiolabeled
            chemical and the parent chemical was verified.


>  No measured BAF was found.
NICKEL    [CAS#: 7440-02-0]

   Calamari et al.  (1982)  obtained a BCF of 0.80 for muscle of
   rainbow trout.  This value of 0.80 will be used as the
   predicted HHBAF.
NITROBENZENE    [CAS#:  98-95-3]

                                61

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>  Predicted BAF based on Log  P:
      The  following  values were  found for  Log  P:
                1.85          MedChem Star
                1.885          MedChem Calc
                1.70          Hammers et al. 1982
                1.89          Deneer et al.  1987
                1.828          de  Bruijn et al. 1989
                1.85          Isnard and Lambert 1989
      Values ranging from 1.70 to 1.88 were  cited by de Bruijn et
      al.  (1989) and Brooke et al.  (1990).   A value of 1.84 was
      selected as a  "typical Log  P",  from  which the following
      were obtained:
           Predicted BCF  (at  7.6%  lipids) = 11.31
           Normalized BCF (at  1.0%  lipids) = 1.45
           Food Chain Multiplier  =1.0
      For 5.0% lipids at trophic  level 4 the predicted HHBAF that
      is calculated  from the 'typical Log  P* is (1.45)(5.0)(1.0)
      = 7.2.

      Note: Brooke and Call measured the BCF using radiolabeled
            chemical and the parent  chemical was verified.


>  Predicted BAF based on Log  P and  measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       2.34    8.0      0.293     Deneer et al. 1987
       2.49    4.04     0.616     Brooke and  Call,  ms.

      Geometric mean normalized BCF  = 0.425

      For 5.0% lipids at trophic  level 4 the predicted HHBAF that
      is calculated  from the geometric mean  normalized BCF is
      (0.425) (5.0) (1.0)  = 2.1.  •   .
>  No measured BAF was found.
2-NITROPHENOL    [CAS#: 88-75-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.79          MedChem Star
                1.854         MedChem Calc
                1.79          Isnard and Lambert 1989
      A value of 1.82 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 10.91

                               • 62

-------
           Normalized BCF (at 1.0% lipids) =  1.44
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P» is (1.44)(5.0)(1.0)
      = 7.2.
>  No measured BCF or BAF was found.
4-NITROPHENOL    [CAS#: 100-02-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.91          MedChem Star
                1.854         MedChem Calc
                1.91          Veith et al. 1979a
                2.91          Isnard and Lambert 1989
      A value of 1.9 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 12.62
           Normalized BCF (at 1.0% lipids) =  1.66
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P' is (1.66)(5.0) (1.0)
      = 8.3.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       6.194   4.04     1.533    Call et al.  1980;  Brooke and
                                 Call, ms.

      Geometric mean normalized BCF = 1.533

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (1.533) (5.0) (1.0)  = 7.7.

      Note: The BCF was measured using radiolabeled chemical and
            the parent chemical was verified.  The two predicted
            BAFs are similar.
>  No measured BAF was found.
                                63

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N-NITRQSQDIMETHYLAMINE     [CAS#:  62-75-9]

>  Predicted BAF based  on  Log  P:
      The  following values were  found  for  Log  P:
                -0.57          MedChem  Star
                -0.768         MedChem  Calc
      A value of -0.67  was selected as a 'typical Log  P",  from
      which the following  were obtained:
           Predicted BCF   (at  7.6% lipids)  = 0.118
           Normalized BCF  (at  1.0% lipida)  = 0.0155
           Food Chain Multiplier  =1.0
      For  5.0% lipids at trophic  level 4 the predicted HHBAF that
      is calculated from the 'typical  Log  P' is
      (0.0155) (5.0) (1.0) = 0.08.
>  No measured BCF or BAF was  found.
N-NITROSODIPHENYLAMINE     [CAS#: 86-30-6]

>  Predicted BAF based on  Log P:
      The following values were found for Log P:
                3.13          MedChem Star
                3 .16          MedChem Calc
      A value of 3.14 was  selected as a  "typical Log P', from
      which the following were obtained:
           Predicted BCF   (at 7.6% lipids) = 120.4
           Normalized BCF  (at 1.0% lipids) =  15.8
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (15.8) (5.0) (1.0)
      = 79.


>  Predicted BAF based on  Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

       217     4.8      45.2     Barrows et al. 1980

      Geometric mean normalized BCF =45.2

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF  is
      (45.2) (5.0) (1.0) = 226.

      Note: This BCF was based on uptalce of radioactivity with  no
            verification of the parent chemical.  Thus this BCF
            and the resulting predicted HHBAF might be too  high.

                                64

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>  No measured BAF was found.
N-NITROSODIPROPYLAMINE    [CAS#: 621-64-7]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                1.36          MedChem Star
                1.348         MedChem Calc
      A value of 1.35 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =4.64
           Normalized BCF (at 1.0% lipids) =0.61
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P' is  (0.61)(5.0)(1.0)
      = 3.0.
>  No measured BCF or BAF was found.
OCTACHLOROSTYRENE    [CAS# 29082-74-4]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                7.94          MedChem Calc
      A value of 7.94 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 100,000
           Normalized BCF (at 1.0% lipids) =  13,158
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is
      (13,158) (5.0) (1.0) = 65,790


>  Predicted BAF based on Log P and measured BCF:

       BCF      % L   Norm BCF   Reference
                      (1.0% L)

      33,000    7.6    4,342     Veith et al. 1979b
       8,100    7.6    1,066     Oliver and Niimi  1985

      Geometric mean normalized BCF = 2-, 151

      For 5.0% lipids at trophic level 4  the predicted  HHBAF  that
      is calculated from the geometric mean normalized  BCF is

                              '  65

-------
       (2,151) (5.0) (1.0) = 10,755.


>  Measured Bioaccumulation Factors:
       (baaed on field data for fish at trophic level 4)

         BAF     % L  Norm BAF   Species    Reference
                       (1.0% L)

      1,400,000    8   175,000   Trout      Oliver and Niimi 1985
      9,361,702   11   851,064   Salmonids  Oliver and Niimi 1988

      Geometric mean normalized BAF = 385,923

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
       (385,923) (5.0)  = 1,929,615.
PARATHION   [CAS#: 56-38-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.83          MedChem Star
                3.469         MedChem Calc
                3.81          Isnard and Lambert 1989
      A value of 3.8 was selected as a "typical Log P", from
      which the following were obtained: .
           Predicted BCF   (at 7.6% lipids)  = 399.9
           Normalized BCF  (at 1.0% lipids)  =  52.6
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (52.6) (5.0) (1.0)
      = 263.
>  No measured BCF or BAF was found.
PCBs (POLYCHLORINATED BIPHENYLS)

   The  term "PCBs" refers to a group of 209 chemicals,  which are
   known as PCB congeners (for example, see Hawker and Connell
   1988).   In addition,  several commercial products are mixtures
   of PCBs; the most widely known such products are the ones
   called "Aroclors".  Thus there are about 220 CAS numbers that
   pertain to PCBs.   The GLI human health criterion is based on
   data for Aroclor 1260 (which is mostly hexa- and
   heptachlorobiphenyl),  but the criterion is considered
   representative for all PCB mixtures.
                                66

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Predicted BAF based on Log P:
   Because of uncertainty concerning the  value  of  Log P for
   any one specific congener and because  of  the large number
   of individual chemicals that  are covered  under  the term
   •PCBs",  the following values  for Log P are given as
   indicative of the range of  values that are available:
   Class of PCBs

   Monochlorobiphenyls
   Dichlorobiphenyls
   Trichlorobiphenyls
   Tetrachlorobiphenyls
   Pentachlorobiphenyls
   Hexachlorobiphenyls
   Heptachlorobiphenyls
Log P     Reference
                           4.50        Miller et al.  1985
                           4.46-4.69   Hawker and  Connell  1988
                           4.53        de Bruijn et al. 1989
                           4.26-4.95   Isnard and  Lambert  1989
                           4.93-5.16   Miller et  al.  1985
                           5.14        Burkhard and Kuehl  1986
                           4.65-5.30   Hawker and Connell  1988
                           4.96-4.98   de Bruijn  et al.  1989
                           4.52-5.58   Isnard and Lambert  1989
                           5.47-5.51   Miller  et  al.  1985
                           5.66        Burkhard and Kuehl  1986
                           5.02-5.89   Hawker  and Connell  1988
                           5.71-5.90   de Bruijn  et al.  1989
                           5.47-5.61   Isnard  and Lambert  1989
                           5.72-5.73   Miller  et  al.  1985
                           5.72-5.81   Burkhard and Kuehl  1986
                           5.21-6.48   Hawker  and Connell  1988
                           5.94-6.63   de  Bruijn  et al.  1989
                           5.72-6.11   Isnard  and Lambert  1989
                           5.92-6.30   Miller  et  al.  1985
                           6.18        Burkhard and  Kuehl  1986
                           6.04-6.95   Hawker  and Connell  1988
                           6.75        de  Bruijn  et  al.  1989
                           5.92-6.30   Isnard  and Lambert  1989
                           6.63-7.55   Miller et al.  1985
                           5.48-6.68   Burkhard et al.  1985
                           6.65        Burkhard and Kuehl  1986
                           6.22-7.42   Hawker and Connell  1988
                           7.12-7.41   de Bruijn et al.  1989
                           6.63-6.93"   Isnard and Lambert  1989
                            67

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       Octachlorobiphenyls
                               6.68        Miller  et al.  1985
                               6.69-7.71   Hawker  and Connell  1988
                               6.68        Isnard  and Lambert  1989
                               7.11        Miller et al. 1985
                               7.20-8.00   Hawker and Connell 1988
                               7.73        de Bruijn et al. 1989
                               7.11        Isnard and Lambert 1989
      Nonachlorobiphenyls
      Decachlorobiphenyl
      Aroclor  1016
      Aroclor  1242
      Aroclor  1248
      Aroclor  1254
                              8.16        Miller et al. 1985
                              7.71-8.09   Hawker and Connell 1988
                              8.16        Isnard and Lambert 1989
              8.26        Miller et al. 1985
              8.23        Burkhard and Kuehl 1986
              8.18        Hawker and Connell 1988
              8.27        de Bruijn et al. 1989
              8.26        Isnard and Lambert 1989

              5.58        Veith et al. 1979a
              5.58        Veith et al. 1979a
              6.11        Veith et al. 1979a
              6.72        Veith et al. 1979a
      Based on these ranges of values, a "typical Log P" was
      selected for each class and then.a "predicted HHBAF" was
      calculated for 5.0% lipids at trophic level 4:
Class of
PCBs
Monochloro-
Dichloro-
Trichloro-
Tetrachloro-
Pentachloro-
Hexachloro-
Heptachloro-
Octachloro-
Nonachloro-
Decachloro-
Typical
Loa P
4.54
4.99
5.57
5.75
6.40
6.82
6.69
7.45
7.95
8.24
Pred BCF
(7.6% L)
1,537
3,484
10,007
13,884
45,290
97,230
76,754
100,000
100,000
100,000
Norm BCF
(1.0% L)
202
458
1,317
1,827
5,959
12,793
10,099
13,158
13,158
13,158
FCM

1.2
2.6
16
23
98
1.0
1.0
1.0
1.0
1.0
Pred HHBAF
(5.0% L)
1,212
5,954
105,360
210,105
2,919,910
63,965
50,495
65,790
65,790
65,790
>  Predicted BAF based on Log P and measured BCF:
       Class
      of PCBs
BCF
% L
Norm BCF
(1.0% L)

68
Reference

-------
Dichloro-
14,100
18,200
3,800*
10,000
13,000
6,100
Trichloro-
20,100
42,000
17,000*
6,066
14,125
Tetrachloro-
48,900
42,000
84,000
18,000*
17,000*
6,806
3.0
3.5
11.6
7.6
7.6
7.6

3.0
3.0
7.6
6.5
7.5

3.0
3.0
3.5
7.6
7.6
6.5
4,700
5,200
328*
1,316
1,711
803

6,700
14,000
2,237*
933
1,883

16,300
14,000
24,000
2,368*
2,237*
1,047
Bruggeman et al. 1981
Bruggeman et al. 1984
Oliver and Niimi 1984
Oliver and Niimi 1985
Oliver and Niimi 1985
Oliver and Niimi 1985

Bruggeman et al. 1981
Bruggeman et al. 1981
Oliver and Niimi 1985
Gobas et al. 1989
Go has and Schrap 1990

Bruggeman et al. 1981
Bruggeman et al. 1981
Bruggeman et al. 1984
Oliver and Niimi 1985
Oliver and Niimi 1985
Gobas et al . 1989
Pentachloro-
         14,000*

Hexachloro-
        210,000
          4,800*

Octachloro-
         22,400

Decachloro-
         10,500
          8,374

Aroclor 1016
         24,299
         42,500

Aroclor 1248
         70,500

Aroclor 1254
         37,000
          6,601
        100,000

Aroclor 1260
        194,000
7.6
3.5
7.6
3.5
 1,842*   Oliver and Niimi 1985
60,000
   632*
 6,400
3.5    3,000
6.5    1,288
3.6    6,750
7.6    5,592
7.6    9,276
1.1   33,636
3.16   2,089
7.6   13,159
7.6   25,526
Bruggeman et al. 1984
Oliver and Niimi 1985
Bruggeman et al. 1984
          Bruggeman et al. 1984
          Gobas et al. 1989
          Hansen et al. 1975
          Veith et al. 1979b
          Veith et al.  1979b
          Hansen et al. 1971
          Snarski and Puglisi 1976
          Veith et al. 1979b
          Veith et al. 1979b
                          69

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   * = below steady state.
   For several of these the range of the normalized BCF is
   greater than a factor of 10.
Measured Bioaccumulation Factors:
    (based on field data for fish at trophic level 4)
   Class
BAF
   Trichloro-
        590,000
        293,333

   Tetrachloro-
      1,900,000
        240,000
      2,166,667

   Pentachloro-
      8,400,000
      4,102,564

   Hexachloro-
     10,000,000
      8,125,000

   Heptachloro-
     11,296,296

   Octachloro-
     13,000,000

   Total PCBs
      3,909,091
% L  Norm BAF  Species
     (1.0% L)
Reference
8
11
8
8
11
8
11
8
11
11
11
11
73,
26,
237,
30,
196,
1,050,
372,
1,250,
738,
1,026,
1,181,
355,
750
667
500
000
970
000
960
000
636
936
818
372
Trout
Salmon
Trout
Trout
Salmon
Trout
Salmon
Trout '
Salmon
Salmon
Salmon
Salmon
Oliver
Oliver
Oliver
Oliver
Oliver
Oliver
Oliver
Oliver
Oliver
Oliver
Oliver
Oliver
and
and
and
and
and
and
and
and
and
and
and
and
Niimi
Niimi
Niimi
Niimi
Niimi
Niimi
Niimi
Niimi
Niimi
Niimi
Niimi
Niimi
1985
1988
1985
1985
1988
1985
1988
1985
1988
1988
1988
1988
   The normalized BAF of 355,372 that was determined for
   "total PCBs' is probably the best value to use as a
   "typical normalized BAF" for PCBs.  For 5.0% lipids at
   trophic level 4 the predicted HHBAF is (355,372)(5.0)  =
   1,776,860;  for 7.9% lipids at trophic level 4 the predicted
   WLBAF is (355,372)(7.9)  = 2,807,439.

   The predicted HHBAF of 1,776/860 for 5.0% lipids  at trophic
   level 4 seems reasonable because it is similar to the
   predicted HHBAF that was calculated above using the
   "typical Log P" for pentachlorobiphenyl,  which is a PCB
   with an intermediate amount of chlorination.
                            70

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      A normalized BAF of 355,372 for trophic level 4 corresponds
      to a Log P of 6.21167.  The validity of this back
      calculation can be demonstrated as follows;
         For a Log P of 6.21167, the BCF that is predicted for
         fish containing 7.6% lipids is {antilog[(0.79)(6.21167)-
         0.40J) = 32,152.84.  The BAF that is predicted for fish
         containing 5.0% lipids at trophic level 4 is
         (32,152.84/7.6)(5.0)(84) = 1,776,867; the BAF that is
         predicted for fish containing 7.9% lipids at trophic
         level 4 is (32,152.84/7.6)(7.9)(84)  = 2,807,451.  Both
         of these BAFs agree well with the values given above, as
         they should.
      Thus for a Log P of 6.21167, by using the FCM of 29 for
      trophic level 3  instead of the FCM of 84 for trophic level
      4,  the WLBAF that is predicted for fish containing 7.9%
      lipids at trophic level 3 is (32,152.84/7.6)(7.9)(29) =
      969,239.


PENTACHLOROBENZENE    [CAS# 608-93-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                5.17          MedChem Star
                5.707          MedChem Calc
                5.06          Hammers et al,  1982
                5.03          Miller et al. 1985
                5.00          Bobra et al. 1985
                5.19          Isnard and Lambert 1989
                5.183          de Bruijn et al. 1989
      Values ranging from 4.88 to 5.92 were cited by de Bruijn et
      al. (1989).  A value of 5.1 was selected as a "typical Log
      P", from which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 4,256
           Normalized BCF (at 1.0% lipids) =   560
           Food Chain Multiplier =3.2
      For 5.0% lipids  at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (560)(5.0)(3.2)  =
      8,960.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L  . Norm BCF    Reference
                      (1.0% L)

      14,040   5.4     2,600      Konemann and van Leeuwen
                                                 1979,1980
       3,400   4.8       708      Barrows et al. 1980
      16,125   8.45    1,908      Oliver and Niimi 1983
       5,100   1.5     3,400      Banerjee et al. 1984
       7,100   1.8     3,944      Banerjee et al. 1984

                                71

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       7,300   2.8     2,607      Banerjee et al. 1984
         910   3.5       260      Bruggeman et al. 1984
       8,400   3.79    2,216      Carlson and Kosian 1987
       4,700   5         940      Van Hoogen and Opperhuizen
                                                  1988
      23,000   5       4,600      Scrap and Opperhuizen 1990


      Geometric mean normalized BCF = 1,772

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (1,772) (5.0) (3.2) = 28,352.

      Note: The BCF reported by Barrows et al. (1980)  was based
            on uptake of radioactivity with no verification of
            the parent chemical and might be too high.  ,


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)

         BAF    % L   Norm BAF   Species    Reference
                      (1.0% L)

                       2,538     L.  trout   Oliver and Nicol 1982
       17,000    7.9   2,152     Trout      Oliver and Niimi 1983
       69,444   11     6,313     Salmonids  Oliver and Niimi 1988

      Geometric mean normalized BAF = 3,255

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (3,255)(5.0) = 16,275.
PENTACHLOROPHENOL    [CAS#: 87-86-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                5.12          MedChem Star
                5.24          MedChem Star
                5.055         MedChem Calc
                5.01          Veith et al. 1979a
                5.01          Isnard and Lambert 1989
      A value of 5.1 was selected as a "typical Log P",  from
      which the following were obtained:
           Predicted BCF   (at 7.6% lipids) = 4,256
           Normalized BCF  (at 1.0% -lipids) =   560
           Food Chain Multiplier =3.2
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (560) (5.0) (3 .2)  =

                                72

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      8,960.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF    Reference
                      (1.0% L)

        27*    3.6       7.5      Parrish et al.  1978
       770     7.6     101.3      Veith et al.  1979b
       216    13.25     16.30     Smith et al.  1991

      * = In salt water.

      Geometric mean normalized BCF in fresh water = 40.63

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (40.63) (5.0) (3.2)  = 650.


>  No useful measured BAF was found.
PHENANTHRENE     [CAS#: 85-01-8]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.46          MedChem Star
                4.49          MedChem Calc
                4.42          Hammers et al.  1982
                4.57          Miller et al. 1985
                4.562         de Bruijn et al.  1989
                4.46          Isnard and Lambert  1989
      Values ranging  from 4.10 to 4.67 were cited by Eadsforth
      and Moser  (1983), de Bruijn et al. (1989),  and Brooke et
      al.  (1990).  A  Log P of 4.36 was recommended for use in the
      derivation of sediment quality criteria for phenanthrene
      (U.S.  EPA 1991e).  A value of 4.5 was selected as a
      "typical Log P', from which the following were obtained:
           Predicted  BCF  (at 7.6% lipids)  = 1,429
           Normalized BCF (at 1.0% lipids)  =   188.0
           Food Chain Multiplier = 1.2
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is  (188.0) (5.0) (1.2)
      = 1,128.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference

                                73

-------
                       (1.0% L)

       2,850    4.27      667.4'   Carlson et al. 1979

      Geometric mean normalized BCF = 667.4

      For 5.0%  lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (667.4) (5.0) (1.2)  = 4,004.


>  A geometric  mean BAF  of 30 was obtained with fish that
   averaged 4.23 % lipids (Burkhard, unpublished), which results
   in a BAF of  35 at 5.0 % lipids.
PHENOL     [CAS#: 108-95-2]

>  Predicted BAF based on Log P:
      The  following values were found for Log P:
                1.46          MedChem Star
                1.475         MedChem Calc
                1.46          Veith et al. 1979a
                1.11          Hammers et al. 1982
                1.46          Isnard and Lambert 1989
      Values ranging from 0.62 to 2.20 were cited by Eadsforth
      and Moser (1983).  A value of 1.4 was selected as a
      "typical Log P", from which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =5.08
           Normalized BCF (at 1.0% lipids) = 0.688
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (0.688) (5.0) (1. 0)
      = 3.4.


>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                       (1.0% L)

      1,382    4.0      345.5    Call et al. 1980; Brooke and
                                 Call, ms.

      Geometric mean normalized BCF = 345.5

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (345.5)(5.0)(1.0) = 1,728.'

      Note: The BCF was measured using radiolabeled chemical and

                               ' 74

-------
            the parent chemical was verified.  The two predicted
            BAFs are very different.
>  No measured BAF was found.
PHOTOMIREX    [CAS# 39801-14-4]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.54          MedChem Calc
      A value of 4.54 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 1,537
           Normalized BCF (at 1.0% lipids) =   202.2
           Food Chain Multiplier =1.2
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P' is (202 .2) (5.0) (1.2)
      = 1,213.
>  No measured BCF was found.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)

         BAF     % L  Norm BAF    Species   Reference
                      (1.0% L)

      5,117,647   11   465,241   Salmonids  Oliver and Niimi 1988

      Geometric mean normalized BAF = 465,241

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (465,241) (5.0) = 2,326,205.

      Note: The measured BAF is much larger than the predicted
            BAF.
PYRENE     [CAS#: 129-00-0]

>  Predicted BAF based on Log P:
      The  following values were found for Log P:
                4.88          MedChem S-tar
                4.95          MedChem Calc
                4.93          Hammers et al. 1982
                5.52          Burkhard et al. '1985

                                75

-------
                5.18          Miller et al.  1985
                4.88          Isnard and Lambert  1989
      A value of 5.1 was selected as a  "typical Log P",  from
      which the following were obtained:
           Predicted BCF   (at 7.6%  lipids)  = 4,256
           Normalized BCF  (at 1.0%  lipids)  =  560
           Food Chain Multiplier =  3.2
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical Log P'  is  (560) (5.0)(3.2) =
      8,960.


>  Predicted BAF based on Log P and measured  BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

      2,445    4.4      555.7    Carlson et  al. 1979

      Geometric mean normalized BCF = 555.7

      For 5.0% lipids at trophic level 4 the  predicted HHBAF that
      is calculated from the geometric mean  normalized BCF is
      (555.7) (5.0) (3.2)  = 8,891.


>  A geometric mean BAF of 14.3 was obtained  with fish that
   averaged 4.23 % lipids (Burkhard, unpublished),  which results
   in a BAF of 17 at 5.0 % lipids.
SELENIUM    [CAS#: 7782-49-2]

   Adams (1976)  obtained BCFs of 2 and 12 for muscle of the
   rainbow trout and fathead minnow, respectively.  Barrows et
   al.  (1980)  reported a whole-body BCF of 20 for the bluegill.
   The geometric mean of 2 and 12 is 4.9, which will be used as
   the predicted HHBAF for selenium.
SILVER    [CAS#: 7440-22-4]

   Barrows et al. (1980) found no uptake of silver by the
   bluegill.  The value of 0.0 will be used as the predicted
   HHBAF.
2.3,7.8-TCDD    (CAS#:  1746-01-6]


                                76

-------
>  Predicted BAF based on Log P.-
      The following values were found for Log P:
                7.02          MedChem Star
                7.695         MedChem Calc
                7.02          Burkhard and Kuehl 1986
      A value of 7.36 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 100,000
           Normalized BCF (at 1.0% lipids) =  13,158
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P' is
      (13,158) (5.0) (1.0) = 65,790.


>  Predicted BAF based on Log P and measured BCF:

      Cook et al.   (1991) recommended a BCF of 51,000 for fish
      that contain 7% lipids.  Cook (1992) recommended use of a
      BAF of 60,000 for fish that contain 5.0% lipids and are at
      trophic levels 3 and 4 in the Great Lakes.  This is
      equivalent to recommending use of a FCM of 1.37255 for both
      trophic level 3 and trophic level 4.  This can be
      demonstrated because for fish that are at trophic level 4
      and contain 6% lipids,  the predicted BAF is
      (51,000/7)(6)(1.37255)  = 60,000.  Thus for fish that are at
      trophic level 4 and contain 5.0% lipids, the predicted
      HHBAF is  (51,000/7) (5.0) (1.37255) = 50,000; similarly for
      fish that contain 7.9% lipids,  the predicted WLBAFs are
      (51,000/7) (7.9) (1.37255)  = 79,000 for both trophic level 3
      and trophic level 4.
1.2.3.4-TETRACHLOROBENZENE    [CAS#: 634-66-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                4.64          MedChem Star
                4.99          MedChem Calc
                4.41          Hammers et al.  1982
                4.55          Miller et al. 1985
                4.50          Bobra et al. 1985
                4.65          Isnard and Lambert 1989
                4.635         de Bruijn et al. 1989
      Values ranging from 4.41 to 5.16 were cited by Hammers et
      al. (1982) and de Bruijn et al.  (1989).  A value of 4.64
      was selected as a "typical Log P", from which the following
      were obtained:
           Predicted BCF   (at 7.6%  lipids) = 1,843
           Normalized BCF  (at 1.0%  lipids) =   242.5
           Food Chain Multiplier =1.3

                                77

-------
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated  from the  "typical Log P" is  (242.5) (5.0) (1.3)
      = 1,576.


>  Predicted BAF based on Log P and measured BCF:

        BCF    % L    Norm BCF    Reference
                Norm BCF
                (1.0% L)
7
5
7
2
        899
        000
        144
        400
      2,300
      6,600
8.45
2.9
7.28
3.79
5
5
934.8
1724.
981.3
633.2
460.
1320.
            Oliver and Niimi 1983
            Banerjee et al. 1984
            Oliver and Niimi 1985
            Carlson and Kosian 1987
            Van Hoogen and Opperhuizen 1988
            Scrap and Opperhuizen 1990
      Geometric mean normalized BCF = 920.4

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (920.4) (5.0) (1.3) = 5,983.
   Measured Bioaccumulation Factors:
      (based on field data for fish at trophic level 4)
       BAF
      10,000
       7,700
      12,857
          % L
           .9
          8
         11
Norm BAF
(1.0% L)

 2,513
 1,266
   962
 1,169
Species
L. trout
R. trout
Salmon
Salmon
Reference
Oliver and Nicol 1982
Oliver and Niimi 1983
Oliver and Niimi 1985
Oliver and Niimi 1988
      Geometric mean normalized BAF = 1,375
      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (1,375) (5.0)  = 6,875.
     ,5-TETRACHLOROBENZENE
                        [CAS#:  95-94-3]
   Predicted BAF based on Log P:
      The following values were found for Log P:
                4.82          MedChem Star
                4.99          MedChem Calc
                4.52          Hammers et al. 1982
                4.51          Miller et al .  1985
                4.50          Bobra et al. 1985
          4.67
                              Isnard and Lambert 1989
                               78

-------
                4.604     -    de Bruijn et al.  1989
      Values ranging from 4.51 to 5.16 were cited by Hammers et
      al. (1982) and de Bruijn et al.  (1989).  A value of 4.7 was
      selected as a "typical Log P", from which the following
      were obtained:
           Predicted BCF  (at 7.6% lipids) = 2,056
           Normalized BCF (at 1.0% lipids) =   270.5
           Food Chain Multiplier =1.4
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the 'typical  Log P' is (270.5)(5.0)(1.4)
      = 1,894.


>  Predicted BAF based on Log P and measured BCF:

        BCF    % L    Norm BCF    Reference
                      (1.0% L)

       8,301   8.45    982.4      Oliver and Niimi 1983
       4,050   8.5     476.5      Smith et al.  1990

      Geometric mean normalized BCF =  684.2

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (684.2) (5.0) (1.4)  = 4,789.


>  Measured Bioaccumulation Factors:
      (based on field data for fish at trophic  level 4)

       BAF      % L   Norm BAF   Species    Reference
                      (1.0% L)

                      1513.       L. trout   Oliver and Nicol 1982
      5,000     7.9    632.9     R. trout   Oliver and Niimi 1983

      Geometric mean normalized BAF =  978.6

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (978.6)(5.0) = 4,893.
1.1.2.2-TETRACHLORQETHANE    [CAS#:  79-34-5]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.39          MedChem Star
                2.644         MedChem Calc
                2.39          Isnard and Lambert 1989
      A value of 2.52 was selected as a "typical Log P", from

                                79

-------
      which  the  following were obtained:
           Predicted BCF   (at 7.6%  lipids)  =39.0
           Normalized BCF  (at 1.0%  lipids)  =  5.13
           Food  Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4  the predicted  HHBAF  that
      is calculated from the "typical Log P" is  (5.13)(5.0) (1.0)
      = 26.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                       (1.0% L)

        8      4.8      1.67     Barrows et al. 1980

      Geometric mean normalized BCF = 1.67

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (1.67)(5.0)(1.0) = 8.4.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this BCF
            and the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
TETRACHLOROETHyLENE    [CAS#: 127-18-4]

>  Predicted BAF based on Log P:
      The following values were found for Log P.-
                3.40      •    MedChem Star
                3.02          MedChem Calc
                2.88          Isnard and Lambert 1989
      A value of 3.15 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 122.6
           Normalized BCF (at 1.0% lipids) =  16.1
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (16 .1) (5.0) (1. 0)
      = 80.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

                                80

-------
        49     4.8      10.2     Barrows et al.  1980

      Geometric mean normalized BCF =10.2

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (10.2) (5.0) (1.0)  = 51.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical..  Thus this BCF
            and the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
THALLIUM    [CAS#: 7440-28-0]

   Barrows et al. (1980)  reported a BCF of 34 based on whole-body
   measurements with the bluegill, whereas Zitko et al. (1975)
   obtain a BCF of 131 for muscle of Atlantic salmon.  The
   geometric mean of 34 and 131 is 67, which will be used as the
   predicted HHBAF for thallium.
TOLUENE    [CAS#: 108-88-3]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.70          MedChem Star
                2.79          MedChem Calc
                2.78          Hammers et al.  1982
                2.78          Burkhard et al.  1985
                2.65          Miller et al. 1985
                2.786         de Bruijn et al. 1989
                2.63          Isnard and Lambert 1989
      Values ranging from 2.11 to 3.06 were cited by Eadsforth
      and Moser  (1983), de Bruijn et al.  (1989), and Brooke et
      al. (1990).  A value of 2.76 was selected as a "typical Log
      P", from which the following were obtained:
           Predicted BCF   (at 7.6% lipids) = 60.3
           Normalized BCF  (at 1.0% lipids) =  7.93
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4  the predicted HHBAF that
      is calculated from the  "typical Log P" is  (7 . 93) (5 . 0) (1. 0)
      =  40.
>  Predicted BAF based on Log P and measured BCF


                                81

-------
       BCF     % L    Norm  BCF   Reference
                       (1.0% L)

      1,250    4.04      309.4    Brooke and Call, ms.

      Geometric mean normalized BCF = 309.4

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (309.4) (5.0) (1.0)  = 1,547.

      Note: This BCF was based on uptake of radioactivity with no
            verification of  the parent chemical.  Thus this BCF
            and the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
TOXAPHENE   [CAS#:  8001-35-2]

>  Predicted BAF based on Log P:
      The following values were found for Logp P:
                4.33          MedChem Calc
                5.50          Isnard and Lambert 1989
      A value of 5.0 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 3,548
           Normalized BCF (at 1.0% lipids) =   466.8
           Food Chain Multiplier =2.6
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (466.8)(5.0)(2.6)
      = 6,068.


>  Predicted BAF based on Log P arid measured BCF:

        BCF    % L     Norm BCF   Reference
                      (1.0% L)

      19,465   4.78    4,073**   Mayer et al.  1977
      27,539   1.2     22,949*    Schimmel et al. 1977
       8,427   4.76    2,633*    Goodman et al. 1978
      26,552   4.76    5,578*    Goodman 1986
      62,462   4.1     15,235**   Goodman 1986
      70,743   3.2     22,107**   Goodman 1986
      19,532   4.76    4,103*    Goodman 1986

      * = juveniles
      ** = adults
                                82

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      Geometric mean normalized BCF = 4,073

      The geometric mean normalized BCF was based on the data of
      Mayer et al. (1977).   All the other BCFs were determined in
      salt water, but there is no reason to suspect that the BCF
      for toxaphene should depend on the water.  The saltwater
      data suggest that the normalized BCFs for some freshwater
      species might be substantially higher than 4,073.  For 5.0%
      lipids at trophic level 4 the predicted HHBAF that is
      calculated from the geometric mean normalized BCF is
      (4,073) (5.0) (2.6) = 52,949.


>  Measured Bioaccumulation Factors:
      (based on field data  for fish at trophic level 4)

         BAF      % L    Norm BAF  Species    Reference
                         (1.0% L)

      11,000,000  13.1   839,695   L.  trout   Swain et al. 1986
      1,772,727    8.3   213,582   L.  trout   Swain et al. 1986

      Geometric mean normalized BAF =  423,490

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (423,490) (5.0)  = 2,117,450.

      Note:  Both of the measured BAFs  are much larger than both
            of the predicted BAFs.
1,2.4-TRICHLOROBENZENE    [CAS#:  120-82-1]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.98    •      MedChem Star
                4.02          MedChem Star
                4.28          MedChem Calc
                3.96          Hammers et al.  1982
                3.98          Miller et al.  1985
                4.10          Bobra et al.  1985
                4.04          Isnard and Lambert  1989
                4.05          de Bruijn et al.  1989
      Values ranging from 3.93 to 4.40 were cited by Hammers et
      al. (1982),  Eadsforth and Moser (1983), and de Bruijn et
      al. (1989),   A value of 4.0-was selected as a "typical Log
      P", from which the following were-obtained:
           Predicted BCF  (at 7.6% lipids)  = 575.4
           Normalized BCF (at 1.0% lipids)  =  75.7
           Food Chain Multiplier = 1.0

                               83

-------
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (75.7)(5.0) (1.0)
      = 378.
>  Predicted BAF based on Log P and measured BCF:
                                  Reference
                                  Veith et al. 1979b
                                  Macek et al. 1979; Barrows et
                                     al. 1980
                                  Kosian et al.  1981
                                  Galassi and Calamari 1983
                                  Galassi and Caleunari 1983
                                  Galassi and Calamari 1983
                                  Oliver and Niimi 1983
                                  Oliver and Niimi 1985
                                  Geyer et al. 1985
                                  Geyer et al. 1985
                                  Geyer et al. 1985
                                  Geyer et aJ. 1985
                                  Geyer et al. 1985
                                  Geyer et al. 1985
                                  Geyer et al. 1985
                                  Geyer et al. 1985
                                  Geyer et al. 1985
                                  Geyer et al. 1985
                                  Carlson and Kosian 1987
                                  Smith et al. 1990

      Geometric mean normalized BCF = 135.2

      For 5.0% lipids at  trophic level 4 the predicted HHBAF that
      is calculated from  the geometric mean normalized BCF 'is
      (135.2) (5.0) (1.0) = 676.

      Note:  The BCF reported by Macek et al.  (1979)  and Barrows
            et al.  (1980)  was based on uptake of radioactivity
            with no verification of the parent chemical and might
            be too  high.
BCF

2,800
182
1,600
85
349
39
2,040
2,917
124
248
498
914
769
769
1,127
1,365
1,442
991
410
2,026
% L

7.6
4.8
9.12
2.1(e)
3.2(h)
0.7{a)
8.45
7.28
1.8
2.2
4.4
5.0
5.2
5.2
5.7
5.8
7.7
8.2
3.79
11.4
Norm BCF
(1.0% L)
368.4
37.9
175.4
40.5
109.1
55.7
241.4
400.7
68.9
112.7
113 .2
182.8
147.9
147.9
197.7
235.3
187.3
120.9
108.2
177.7
>  Measured Bioaccumulation Factors:
      (based on field data  for fish at trophic level 4]
       BAF
      1, 000
% L
7.9
Norm BAF
(1.0% L)

  245
  127
Species    Reference
L. trout   Oliver and Nicol 1982
R. trout   Oliver and Niimi 1983
                               84

-------
      1,200     8       150      Salmon     Oliver and Niimi 1985

      Geometric mean normalized BAF = 167.1

      For 5.0% lipids at trophic level 4 the predicted HHBAF is
      (167.1)(5.0) = 836.
1,1.1-TRICHLOROETHANE    [CAS#: 71-55-6]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.49          MedChem Star
                2.48          MedChem Calc
                2.47          Isnard and Lambert  1989
      A value of 2.48 was selected as a "typical  Log P",  from
      which the following were.obtained:
           Predicted BCF  (at 7.6% lipids) = 36.2
           Normalized BCF (at 1.0% lipids) =  4.76
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (4.76) (5.0) (1. 0)
      = 24.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        9      4.8 .     1.88     Barrows et al. 1980

      Geometric mean normalized BCF = 1.88

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (1.88) (5.0) (1.0) = 9.4.

      Note: This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this BCF
            and the resulting predicted HHBAF might be too high.


>  No measured BAF was found.
1,1.2-TRICHLOROETHANE    [CAS#:  79-00-5J

>  Predicted BAF based on Log P:
      The following values were found for Log P:

                                85

-------
                1.89          MedChem Star
                2.05          MedChem Calc
                2.42          Jsnard and Lambert  1989
      A value of 2.1 was selected as a  "typical Log  P",  from
      which the following were obtained:
           Predicted BCF   (at 7.6% lipids) ^18.2
           Normalized BCF  (at 1.0% lipids) =  2.39
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level  4 the predicted HHBAF that
      is calculated from the 'typical Log P" is (2.39) (5.0) (1.0)
      = 12.
>  No measured BCF or BAF was found.
TRICHLOROETHYLENE    [CAS#: 79-01-6]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                2.42          MedChem Star
                2.267         MedChem Calc
                2.53          Miller et al.  1985
                2.53          Isnard and Lambert 1989
      A value of 2.43 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =33.1
           Normalized BCF (at 1.0% lipids) =  4.36
           Food Chain Multiplier = 1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P" is (4.36) (5.0) (1.0)
      = 22.
>  Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        17     4.8      3.54     Barrows et al.  1980

      Geometric mean normalized BCF = 3.54

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (3.54)(5.0)(1.0)  = 18.

      Note:  This BCF was based on uptake of radioactivity with no
            verification of the parent chemical.  Thus this BCF
            and the resulting predicted HHBAF might be too high.


                                86

-------
>  No measured BAF was found.
2,4.6-TRICHLOROPHENOL    [CAS#: 88-06-2]

>  Predicted BAF based on Log P:
      The following values were found for Log P:
                3.69          MedChem Star
                3.57          MedChem Calc
                2.97          Isnard and Lambert 1989
      A value of 3.5 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) = 231.7
           Normalized BCF (at 1.0% lipids) =  30.5
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the "typical Log P' is (30.5)(5.0) (1.0)
      = 152.
> .Predicted BAF based on Log P and measured BCF:

       BCF     % L    Norm BCF   Reference
                      (1.0% L)

        88     12.4     7.10     Smith et al.  1990,1991

      Geometric mean normalized BCF =7.10

      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the geometric mean normalized BCF is
      (7.10) (5.0) (1.0) = 36.


>  No measured BAF was found.  .
VINYL CHLORIDE    [CAS#: 75-01-4]

>  Predicted BAF based on Log P:
      The following value was found for Log P:
                1.36          MedChem Calc
      A value of 1.36 was selected as a "typical Log P", from
      which the following were obtained:
           Predicted BCF  (at 7.6% lipids) =4.72
           Normalized BCF (at 1.0% lipids) = 0.621
           Food Chain Multiplier =1.0
      For 5.0% lipids at trophic level 4 the predicted HHBAF that
      is calculated from the  "typical Log P" is  (0. 621) (5.0) (1.0)
      = 3.1.

                                87

-------
>  No measured BCF or BAF was found.
ZINC    [CAS#: 7440-66-6]

   Data presented by Murphy et al. (1978)  can be used to
   calculate BAFs of 2.45 and 8.03 based on increased
   concentrations of zinc in water and in muscle-of bluegills  and
   bass.  The geometric mean of 2.45 and 8.03 is 4.4,  which will
   be used as the predicted HHBAF for zinc.
                                88

-------
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                                93

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Murphy, B.R., G.J. Atchison, and A.W. Mclntosh.  1978.  Cadmium
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Parks, J.W., A. Lutz, and J.A. Sutton.  1989.  Water Column
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Parrish, P.R., E.E. Dyar, M.A. Lindberg, C.M.  Shanika, and J.M.
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                                96

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Schrap,  S.M.,  and A.  Opperhuizen.  1990.  Relationship between
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