United States Office of Water 

Environmental Protection (4304T) November 2002 

Agency 

EPA-822-R-02-012 

National Recommended 

Water Quality Criteria: 

2002 

Human Health Criteria 

Calculation Matrix 
Notices 

This document contains information regarding the calculation of the human health criteria 

contained in the document entitled, National Recommended Water Quality Criteria: 2002. This 

document provides: cancer potency factors (q1*s); reference doses (RfDs); relative source 

contributions (RSCs); fish intake values; and equations used to derive the human health criteria 

in the aforementioned compilation. 

This document is not a regulation and cannot substitute for the Clean Water Act or 

Environmental Protection Agency (EPA) regulations. Thus, the criteria in the calculation matrix 

cannot impose legally binding requirements on EPA, states, authorized tribes or the regulated 

community. 
---- ----- 

------- 

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NRWQC: HUMAN HEALTH CRITERIA CALCULATION MATRIX (November 200

Priority Pollutants 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

1 Antimony 

77440 36 0 

RfD = 4E-4 BCF = 1 FI = 6.5 

14/4300 IRIS 02/01/91 RfD = 4E-4 

RSC= 40% a 

BCF = 1 FI = 17.5 

2000 5.6/640 

2 Arsenic 

7440 38 2 

q1* = 1.75 9 

BCF = 44 (for oysters) FI = 6.5 

0.018/.14 57FR60848 q1* used = 1.75 9 

BCF = 44 FI = 6.5 

1980 0.018/0.14 

3 Berylium 

7440 41 7 

q1* = 4.3 BCF = 19 

------ IRIS 09/01/92 NA 

4 Cadmium 

7440 43 9 

RfD = 0.001(food) 

RfD= 0.0005(water) 

------ IRIS 02/01/94 RfD = 1E-3 (food) 

RfD= 0.0005(water) 

RSC = 25% 

NA 

5 Chromium (III) 

16065 83 1 

RfD withdrawn BCF = 16 

------ IRIS 03/01/88 1.5E+0 NA 

5a Chromium (VI) 

18540 29 9 

RfD = 5E-3 BCF = 16 

------ IRIS 12/01/96 3E-3 NA 

6 Copper 

7440508 

WQC based on 

DW 

Action level 

BCF = 36 

1300/ -- AWQC 

ADDENDUM 1989 DRAFT final lead/copper 

rule 57 FR 26460 

AWQC ADDENDUM 1989 DRAFT final lead/copper rule 57 FR 26460 

Drinking water regulation 

1,300/ -- 

1
------ ------- 

------ 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

7 Lead 

7439921 

WQC based on 

old Drinking water MCL 

------- Lead/Copper 

Rule 57 FR 26460 

NA 

8 Mercury 

7439976 

RfD = 1E-4 BCF = 3760-9000 (PBCF = 7342.6) FI = 18.7 

0.050/0.051 62 FR42160 Methylmercury 

CAS No. 22967926 RfD = 1E-4 ng/kg BW-day 

RSC = 2.7E-5 mg/kg BWday (subtracted from RfD to account for marine fish consumption) FI = 17.5 

2000 0.3 mg/kg 

9 Nickel RfD E-2= 2

BCF = 47 FI = 6.5 

610/4600 IRIS 12/01/96 

for Nickel, soluble salts used 

RfD = 2E-2 BCF = 47 FI = 6.5 

1980 (Undergoing Major reassessment, no revision) 

610/4,600 

10 Selenium 

7782492 

RfD = 5E-3 BCF =4.8 (1988 Addendum used) FI = 6.5 

170/11,00012 IRIS 09/01/91 RfD = 5E-3 

BCF =4.8 (1988 Addendum 

used) FI = 17.5 

2000 170/4,200 

11 Silver 

7440224 

RfD = 5E-3 BCF = 0.5 

------ IRIS 12/01/96 RfD = 5E-3 

BCF = 0.5 

NA 

12 Thallium5 

7440280 

RfD = 6.8E-56 

(RFD LISTED IS FOR THALLIUM SULFATE) BCF = 116 FI = 6.5 

1.7/6.3 

IRIS 09/01/90 

RfD = 6.8E-5 6,10,b 

(RFD LISTED IS FOR 

THALLIUM (I) SULFATE 

7446-18-6) 

BCF = 116 RSC = 20% (not used) 

FI = 6.5 

1980 1.7/6.3 

13 Zinc 

7440666 

RfD = 3E-1 BCF = 47 FI = 6.5 

9100/69,00012 IRIS 10/01/92 RfD = 3E-1 

BCF = 47 FI = 17.5 

2000 7,400/26,00

2
Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

14 Cyanide 

57125 

RfD = 2E-2 BCF = 1 FI = 6.5 

700/220,000 IRIS 02/01/93 RfD = 2E-210 

BCF = 1 RSC = 20% c (not used) 

FI = 6.5 

1980 700/220,000 

15 Asbestos 

1332214 

Based on 

drinking water MCL 

7 million Fibers/L 

DW MCL 56 FR 3526 1/30/91 

Based on drinking water 

MCL 

7 million Fi

16 2,3,7,8-

TCDD(Dioxin) 

1746016 

q1* = 1.56E+5 

BCF = 5000 (q1* no longer 

listed on IRIS) 

FI = 6.5 

1.3E-8/ 1.4E-8 

1984 AWQC Document EPA 440/5-84-007 

q1* = 1.56E+5 

BCF = 5000 (q1* no longer listed on 

IRIS) FI = 17.5 

2000 5.0E-9/5.1E

17 Acrolein 

107028 

ADI = 15.6 ug/kg/day BCF = 215 FI = 6.5 

320/780 1980 AWQC 

document EPA 440/5-80-016 

ADI = 15.6 ug/kg/day 

(or 0.0156 mg/kg/day) 

BCF = 215 FI = 17.5 

2000 190/290 

18 Acrylonitrile 

107131 

q1* = 5.4E-1 

BCF = 30 FI = 6.5 

0.059/0.66 IRIS 01/01/91 q1* = 5.4E-1 

BCF = 30 FI = 17.5 

2000 0.051/0.25 

19 Benzene 

71432 

q1* = 2.9E-2 

BCF = 5.2 FI = 6.5 

1.2/71 IRIS 02/01/94 q1* = 1.5E-2 to 5.5E-2 

BCF = 5.2 FI = 17.5 

2000 0.61 - 2.2/14 

20 Bromoform 

75252 

q1* = 7.9E-3 

BCF = 3.75 based on chloroform FI = 6.5 

4.3/360 IRIS 01/01/91 q1* = 7.9E-3 

BCF = 3.75 (based on chloroform ) FI = 17.5 

2000 4.3/140 

21 Carbon 

Tetrachloride 56235 

q1* = 1.3E-1 

BCF = 18.75 FI = 6.5 

0.25/4.4 IRIS 06/01/91 q1* = 1.3E-1 

BCF = 18.75 FI = 17.5 

2000 0.23/1.6 

3
------- -------- ------------- ------ ------ 

------- --------- ------------- --------- ------- 

------ ----- -------- ------ 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

22 Chlorobenzene 

108907 

RfD = 2E-2 BCF = 10.3 

FI = 6.5 

680/21,000 IRIS 07/01/93 RfD = 2E-210 

BCF = 10.3 RSC = 20 % d (not used) 

FI =6.5 

1980 680/21,000 

23 Chlorodibromomethane 

124481 

q1* = 8.4E-2 

BCF = 3.75 based on chloroform FI = 6.5 

0.41/34 IRIS 01/01/92 q1* = 8.4E-211 

RfD = 2E-2 (not used) 

BCF = 3.75 (based on chloroform) 

RSC = 80% k (not used) 

FI = 17.5 

2000 0.40/13 

24 Chloroethane 

75003 

NA25 2-Chloroethylvinyl Ether 

110758 

NA 

26 Chloroform 

67663 

q1* = 6.1E-3 

BCF = 3.75 FI = 6.5 

5.7/470 IRIS 03/01/91 q1* = 6.1E-3 

BCF = 3.75 FI = 6.5 (RfD = 1E-2; IRIS 10/19/01-not used)4 

1980 (Undergoing Major reassessment, no revision) 

5.7/470 

27 Dichlorobromomethane 

75274 

q1* = 6.2E-2 

BCF = 3.75 FI = 6.5 

0.56/46 IRIS 03/01/93 q1* = 6.2E-2 

BCF = 3.75 FI = 17.5 

2000 0.55/17 

28 1,1-Dichloroethane 

75343 

q1* = 9.1 NA 

29 1,2-Dichloroethane 

107062 

q1* = 9.1E-2 

BCF = 1.2 FI = 6.5 

0.38/99 IRIS 01/01/91 q1* = 9.1E-2 

BCF = 1.2 FI = 17.5 

2000 0.38/37 

4
------- -------- -------- 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

30 1,1-Dichloroethylene 

75354 

q1* = 6E-1 

RfD = 9E-3 

BCF = 5.6 FI = 6.5 

0.057/3.2 IRIS 02/01/98 q1* = 6E-110 

FI = 6.5 

BCF = 5.6 (RfD = 5E-2 IRIS 08/13/02-not used) RSC = 20 % e (not used) 

2000 0.057/3.2 

31 1,2-Dichlorpropane 

78875 

q1* = 6.7E-2 

BCF = 4.1 (q1* not on IRIS, but verified at 6.7E-2) FI = 6.5 

0.52/39 Draft IRIS 

Coversheet; DW reg. 56 FR 

3526 1/30/91 

q1* = 6.7E-2 

BCF = 4.1 (q1* not on IRIS, but 

verified at 6.7E-2) FI = 17.5 

2000 0.50/15 

32 1,3-Dichloropropylene 

542756 

RfD = 3E-4 (low) BCF = 1.9 FI = 6.5 

10 /1700 IRIS 10/01/90 RfD = 3E-4 10 

BCF = 1.9 FI = 6.5 

(q1* = 0.1/ RfD = 3E-2 IRIS 05/25/00-not used) 

1980 10/1,700 

33 Ethyl-benzene 

100414 

RfD = 1E-1 (low) BCF = 37.5 

FI = 6.5 

3100/29,000 IRIS 06/01/91 RfD = 1E-1 10 

BCF = 37.5 RSC = 20% f (not used) 

FI =6.5 

1980 3,100/29,00

34 Methyl-Bromide 

74839 

RfD = 1.4E-3 BCF = 3.75 Chloroform BCF used FI = 6.5 

48/4000 IRIS 07/01/91 RfD = 1.4E-3 

BCF = 3.75 (Chloroform 

BCF used) FI = 17.5 

2000 47/1,500 

35 Methyl-Chloride 

74873 

q1* = 6.1E-3 

(chloroform q1* and BCF used) BCF = 3.75 FI = 6.5 

----- IRIS 03/01/91 

5
-------- ------ ------- 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

36 MethyleneChloride 

75092 

q1* = 7.5E-3 

BCF = 0.9 FI = 6.5 

4.7/1600 IRIS 02/01/95 q1* = 7.5E-3 

BCF = 0.9 FI = 17.5 

2000 4.6/590 

37 1,1,2,2-

Tetrachloroethane 

79345 

q1* = 2E-1 

BCF = 5 FI = 6.5 

0.17/11 IRIS 02/01/94 q1* = 2E-1 

BCF = 5 FI = 17.5 

2000 0.17/4.0 

38 Tetrachloroethylene 

127184 

q1* = 3.98E-2 

BCF = 30.6 FI = 6.5 

0.8/8.85 1980 AWQC 

DOCUMENT EPA 440/5-80-073 

q1* = 3.98E-2 

BCF = 30.6 FI = 17.5 

2000 0.69/3.3 

39 Toluene 

108883 

RfD = 2E-1 BCF = 10.7 

FI = 6.5 

6800/200,000 IRIS 04/01/94 RfD = 2E-110 

BCF = 10.7 RSC = 20% g (not used) 

FI = 6.5 

1980 6,800/200,0

40 1,2-TransDichloroethylene 

156605 

RfD = 2E-2 BCF = 1.58 FI = 6.5 

700/140,000 IRIS 01/01/89 RfD = 2E-210 

BCF = 1.58 RSC = 20% h (not used) 

FI = 6.5 

1980 700/140,000 

41 1,1,1-Trichloroethane 

71556 

RfD = 9E-2 BCF = 5.6 RfD withdrawn 08/01/91 

IRIS 09/01/90 NA 

42 1,1,2-Trichloroethane 

79005 

q1* = 0.057 

RfD = 0.004 BCF = 4.5 FI = 6.5 

0.60/42 IRIS 07/01/94 q1* = 0.05711 

RfD = 4E-3 BCF = 4.5 RSC = 20% i FI = 17.5 

2000 (based on 

q1* even though RSC 

and RfD are are available) 

0.59/16 

43 Trichloroethylene 

79016 

q1* = 1.26E-2 

BCF = 10.6 RfD under rev q1* withdrawn FI = 6.5 

2.7/81 1980 AWQC 

DOCUMENT EPA 440/5-80-077 

q1* = 1.26E-2 

BCF = 10.6 FI = 17.5 

1980 AWQC DOCUMENT EPA 440/5-80-077 & 2000 FI 

2.5/30 

6
----------- -------------- --------- ------ 

----------- --------------- ------ ------- 

------------ ------- 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

44 Vinyl 

Chloride 75014 

q1* = 1.74E-2 

BCF = 1.17 FI = 6.5 

2.0/525 1980 AWQC 

DOCUMENT EPA 440/5-80-078 

q1* = 1.74E-210 

(q1* = 1.4 LMS exposure from birth/RfD = 3E-3 IRIS 

08/07/00- not used) BCF = 1.17 FI = 6.5 

1980 2.0/530 

45 2-Chlorophenol 

95578 

RfD = 5E-3 BCF = 134 FI = 6.5 

120/400 IRIS 07/01/93 RfD = 5E-3 

BCF = 134 FI = 17.5 

2000 81/150 

46 2,4-Dichlorophenol 

120832 

RfD = 3E-3 BCF = 40.7 

FI = 6.5 

93/790 IRIS 06/30/88 RfD = 3E-3 

BCF = 40.7 FI = 17.5 

2000 77/290 

47 2,4-Dimethylphenol 

105679 

RfD = 2E-2 BCF = 93.8 

FI = 6.5 

540/2300 IRIS 11/01/90 RfD = 2E-2 

BCF = 93.8 

FI = 17.5 

2000 380/850 

48 2-Methyl-4,6-

Dinitro-phenol 

(cresol) 534521 

(0.039 mg/kg/day)/100 BCF = 5.5 FI = 6.5 

13.4/765 1980 AWQC 

DOCUMENT EPA 440/5-80-063 

(0.039 mg/kg/day)/100 

BCF = 5.5 FI = 17.5 

2000 13/280 

49 2,4-Dinitrophenol 

51285 

RfD = 2E-3 BCF = 1.5 FI = 6.5 

70/14,000 IRIS 07/01/91 RfD = 2E-3 

BCF = 1.5 FI = 17.5 

2000 69/5,300 

50 2-Nitrophenol 

88755 

BCF = 2.33 NA 

51 4-Nitrophenol 

100027 

BCF = 3.31 NA 

52 3-Methyl-4-

Chlorophenol 

59507 

RfD = 3E-2 (medium) q1* = 1.2E-1 

IRIS MAY 

1995 

RfD = 3E-2 (medium) q1* = 1.2E-1 

NA 

7
------------ -------- ------- 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

53 Pentachlorophenol 

87865 

q1* = 0.12 BCF = 11 FI = 6.5 

0.28/8.2 IRIS 07/01/93 q1* = 0.12 

RfD = 3E-2 (not used) 

BCF = 11 FI = 17.5 

2000 0.27/3.0 

54 Phenol 

108952 

RfD = 6E-1 BCF = 1.4 FI = 6.5 

21,000/ 4,600,000 

IRIS 02/01/90 RfD = 6E-1 

BCF = 1.4 FI = 17.5 

2000 21,000/1,70

55 2,4,6-Trichlorphenol 

88062 

q1* = 0.011 

BCF = 150 FI = 6.5 

2.1/6.5 IRIS 02/01/94 q1* = 0.011 

BCF = 150 FI = 17.5 

2000 1.4/2.4 

56 Acenaphthene 

83329 

RfD = 6E-2 BCF = 242 FI = 6.5 

1200/2700 IRIS 04/01/94 RfD = 6E-2 

BCF = 242 FI = 17.52 

2000 670/990 

57 Acenaphthylene 

208968 

benzo (a) pyrene (BaP) 

q1* and BCF used 

1980 AWQC document EPA/5-80-069 

NA 

58 Anthracene 

120127 

RfD = 3E-1 BCF = 30 (BaP 

BCF used) FI = 6.5 

9600/110,000 IRIS 07/01/93 RfD = 3E-1 

BCF = 30 (BaP BCF used) FI = 17.5 

2000 8,300/40,00

59 Benzidine 

92875 

q1* = 230 BCF = 87.5 FI = 6.5 

0.00012/ 0.00054 

IRIS 02/01/95 q1* = 230 

RfD = 3E-3 (not used) 

BCF = 87.5 FI = 17.5 

2000 0.000086/0.

60 Benzo(a)-

Anthracene 56553 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 6.5 

0.0044/0.049 IRIS 11/01/94 

for CAS # 

205992 was used 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 17.5 

2000 0.0038/0.01

61 Benzo(a)-Pyrene 

50328 

q1* = 7.3E+0 

BCF = 30 FI = 6.5 

0.0044/0.049 IRIS 11/01/94 q1* = 7.3E+0 

BCF = 30 FI = 17.5 

2000 0.0038/0.01

8
----------- ------------- ------ ------- 

---------- ------ ------

-------- ------ ------ 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

62 Benzo(b)-

Fluoranthene 

205992 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 6.5 

0.0044/0.049 IRIS 11/01/94 

for CAS # 205992 was used 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 17.5 

2000 0.0038/0.01

63 Benzo(ghi)-

Perylene 191242 

BCF = 30 (BaP 

=7.3E+0, BCF) 

NA 

64 Benzo(k)-

Fluoranthene 

207089 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 6.5 

0.0044/0.049 IRIS 11/01/94 

for CAS # 205992 was used 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 17.5 

2000 0.0038/0.01

65 Bis(2-Chloroethoxy)-Methane 

111911 

BCF = 0.64 IRIS 3/1/91 NA 

66 Bis(2-Chloroethyl) Ether 

111444 

q1* = 1.1 BCF = 6.9 FI = 6.5 

0.031/1.4 IRIS 02/01/94 q1* = 1.1 

BCF = 6.9 FI = 17.5 

2000 0.030/0.53 

67 Bis(2-Chloroisopropyl)-Ether 

108-60-1 

(changed from 

3963829) 

RfD = 4E-2 BCF = 2.47 FI = 6.5 

1400/170,000 IRIS 08/01/90 RfD = 4E-2 

BCF = 2.47 FI = 17.5 

2000 1,400/65,00

68 Bis(2-

Ethylhexyl)-Phthalate 117817 

q1* = 0.014 

BCF = 130 FI = 6.5 

1.8/5.9 IRIS 02/01/93 q1* = 0.014 

BCF = 130 FI = 17.5 

2000 1.2/2.2 

69 4-Bromo-phenyl 

Phenyl-Ether 

101553 

BCF = 1640 NA 

70 Butylbenzyl 

phthalate 85687 

RfD = 2E-1 BCF = 414 FI = 6.5 

3000/5200 IRIS 02/01/93 RfD = 2E-1 

BCF = 414 FI = 17.5 

1,500/1,900 

9
--------- ---------------- ------- ------ 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

71 2-Chloronaphthalene 

91587 

RFD = 8E-2 BCF = 202 FI = 6.5 

1700/4300 IRIS 11/01/90 RFD = 8E-2 

BCF = 202 FI = 17.5 

2000 1,000/1,600 

72 4-Chloro-Phenyl 

Phenyl Ether 

7005723 

BCF = 1200 NA 

73 Chrysene 

218019 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 6.5 

0.0044/0.049 IRIS 11/01/94 

for CAS # 205992 was used 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 17.5 

2000 0.0038/0.01

74 Dibenzo(a,h) 

Anthracene 53703 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 6.5 

0.0044/0.049 IRIS 11/01/94 

for CAS # 205992 was used 

q1* = 7.3E+0 (BaP q1* used) BCF =30 FI = 17.5 

2000 0.0038/0.01

75 1,2-Dichlorobenzene 

95501 

RfD = 9E-2 BCF = 55.6 

FI = 6.5 

2700/17,000 IRIS 03/01/91 RfD = 9E-210 

BCF = 55.6 RSC = 20% j (not used) 

FI = 6.5 

1980 2,700/17,00

76 1,3-Dichlorobenzene 

541731 

ADI = 1.34E-2 (ADI for 1,2-

DCB used) 

BCF = 55.6 FI = 6.5 

400/2600 1980 AWQC 

DOC EPA 440/5-80-039 

ADI = 1.34E-2 (ADI for 1,2-DCB used) 

BCF = 55.6 

FI = 17.5 

2000 320/960 

77 1,4-Dichlorobenzene 

106467 

ADI = 1.34E-2 (ADI for 1,2-

DCB used) 

BCF = 55.6 FI = 6.5 

400/2600 1980 AWQC 

DOCUMENT EPA 440/5-80-039 

ADI = 1.34E-210 

(ADI for 1,2-DCB used) 

BCF = 55.6 

RSC = 20% j (not used) 

FI = 6.5 

1980 400/2,600 

78 3,3'-Dichlorobenzidine 

91941 

q1* = 0.45 BCF = 312 FI = 6.5 

0.04/0.077 IRIS 07/01/93 q1* = 0.45 

BCF = 312 

FI = 17.5 

2000 0.021/0.028 

10
-------------- ------- ------ 

--------------- --------- -------- 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

79 Diethyl 

Phthalate 84662 

RfD = 8E-1 BCF = 73 FI = 6.5 

23,000/ 120,000 

IRIS 02/01/93 RfD =8E-1 

BCF = 73 FI = 17.5 

2000 17,000/44,0

80 Dimethyl 

Phthalate 131113 

ADI = 10 BCF = 36 FI = 6.5 

313,000/ 2,900,000 

1980 AWQC document EPA 440/5-80-067 

ADI = 10 BCF = 36 FI = 17.5 

2000 270,000/1,1

81 Di-n-Butyl 

Phthalate 84742 

RfD = 1E-1 BCF = 89 FI = 6.5 

2700/12,000 IRIS 08/01/90 RfD = 1E-1 

BCF = 89 FI = 17.5 

2000 2,000/4,500 

82 2,4-Dinitrotoluene 

121142 

q1* = 3.11E-1 

BCF = 3.8 FI = 6.5 

0.11/9.1 1980 AWQC 

document EPA 440/5-80-045 

q1* = 3.11E-111 

RfD = 2E-3 (not used) 

BCF = 3.8 FI = 17.5 

2000 0.11/3.4 

83 2,6-Dinitrotoluene 

606202 

----------- --------- NA 

84 Di-n-Octyl 

Phthalate 117840 

----------- --------- NA 

85 1,2-Diphenylhydrazine 

122667 

q1* = 0.8 BCF = 24.9 FI = 6.5 

0.040/0.54 IRIS 01/01/91 q1* = 0.8 

BCF = 24.9 FI = 17.5 

2000 0.036/0.20 

86 Fluoranthene 

206440 

RfD = 4E-2 BCF = 1150 FI = 6.5 

300/370 IRIS 07/01/93 RfD = 4E-2 

BCF = 1150 FI = 17.5 

2000 130/140 

87 Fluorene 

86737 

RfD = 4E-2 BCF = 30 BaP BCF used FI = 6.5 

1300/14,000 IRIS 11/01/90 RfD = 4E-2 

BCF = 30 (BaP BCF used) 

FI = 17.5 

2000 1,100/5,300 

11
----------- --------------- ------- -------- 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

88 Hexachlorobenzene 

118741 

q1* = 1.6 BCF = 8690 FI = 6.5 

0.00075/ 

0.00077 

IRIS 11/01/96 q1* = 1.611 

RfD = 8E-4 (not used) 

BCF = 8690 FI = 17.5 

2000 0.00028/0.0

89 Hexachlorobutadiene 

87683 

q1* = 0.078 

BCF = 2.78 FI = 6.5 

0.44/50 IRIS 04/01/91 q1* = 0.078 

BCF = 2.78 FI = 17.5 

2000 0.44/18 

90 Hexachlorocyclo-pentadiene 

77474 

RfD = 7E-3 BCF = 4.34 FI = 6.5 

240/17,000 IRIS 09/01/90 RfD = 7E-310 

BCF = 4.34 RSC = 20% a (not used) 

FI = 6.5 

(RfD = 6E-3 IRIS 07/05/01-not used) 

1980 240/17,000 

91 Hexachloroethane 

67721 

q1* = 0.014 

BCF = 86.9 

FI = 6.5 

1.9/8.9 IRIS 02/01/94 q1* = 0.014 

RfD = 1E-3 (not used) 

BCF = 86.9 FI = 17.5 

2000 1.4/3.3 

92 Indeno(1,2,3-cd) 

Pyrene 193395 

q1* = 7.3E+0 

(BaP q1* used) BCF = 30 FI = 6.5 

0.0044/0.049 IRIS 11/01/94 

for CAS # 205992 was used 

q1* = 7.3E+0 

(BaP q1* used) 

BCF = 30 FI = 17.5 

2000 0.0038/0.01

93 Isophorone 

78591 

q1* = 9.5E-4 

BCF = 4.38 FI = 6.5 

36/2600 IRIS 11/01/92 q1* = 9.5E-411 

RfD = 2E-1 (not used) 

BCF = 4.38 FI = 17.5 

2000 35/960 

94 Naphthalene 

91203 

BCF = 10.5 NA 

95 Nitrobenzene 

98953 

RfD = 5E-4 BCF = 2.89 FI = 6.5 

17/1900 IRIS 01/01/91 RfD = 5E-4 

BCF = 2.89 FI = 17.5 

2000 17/690 

12
---------- ---------- -------- 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

96 N-Nitrosodimethylamine 

62759 

q1* = 51 BCF = 0.026 FI = 6.5 

0.00069/8.1 IRIS 07/01/93 q1* = 51 

BCF = 0.026 FI = 17.5 

2000 0.00069/3.0 

97 N-Nitrosodi-nPropylamine 

621647 

q1* = 7.0 BCF = 1.13 FI = 6.5 

0.005/1.4 IRIS 07/01/93 q1* = 7.0 

BCF = 1.13 FI = 17.5 

2000 0.0050/0.51 

98 N-Nitrosodiphenylamine 

86306 

q1* = 0.0049 

BCF = 136 FI = 6.5 

5.0/16 IRIS 07/01/93 q1* = 0.0049 

BCF = 136 FI = 17.5 

2000 3.3/6.0 

99 Phenanthrene 

85018 

No RfD listed No q1* listed 

---------- NA 

100 Pyrene 

129000 

RfD = 3E-2 BCF = 30 (BaP 

BCF used) FI = 6.5 

960/11,000 IRIS 07/01/93 RfD = 3E-2 

BCF = 30 (BaP BCF used) FI = 17.5 

2000 830/4,000 

101 1,2,4-Trichlorobenzene 

120821 

RfD = 1E-2 BCF = 114 FI = 6.5 

260/94012 IRIS 11/01/96 RfD = 1E-210 

BCF = 114 RSC = 20% a (not used) 

FI = 6.5 

1980 260/940 

102 Aldrin 

309002 

q1* = 17 BCF = 4670 FI = 6.5 

0.00013/ 0.00014 

IRIS 07/01/93 q1* = 1711 

RfD = 3E-5 (not used) 

BCF = 4670 FI = 17.5 

2000 0.000049/0.

103 alpha-BHC 

319846 

q1* = 6.3 BCF = 130 FI = 6.5 

0.0039/0.013 IRIS 07/01/93 q1* = 6.3 

BCF = 130 FI = 17.5 

2000 0.0026/0.00

104 beta-BHC 

319857 

q1* = 1.8 BCf = 130 FI = 6.5 

0.014/0.046 IRIS 01/01/91 q1* = 1.8 

BCf = 130 FI = 17.5 

2000 0.0091/0.01

13
------------ ---------------- -------- -------- 

Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

105 gamma-BHC 

58899 lindane 

q1* = 1.3 (Not listed on IRIS) 

BCF = 130 FI = 6.5 

0.019/0.063 1980 AWQC 

DOCUMENT EPA 440/5-80-054 

q1* = 1.3 (Not listed on 

IRIS)10 

BCF = 130 FI = 6.5 

(RfD = 3E-4 IRIS 03/01/88-not used) RSC = 20% l (not used) 

1980 0.019/0.063 

106 delta-BHC 

319868 

BCF = 130 NA 

107 Chlordane 

57749 

q1* = 3.5E-1 

BCF = 14100 FI = 6.5 

0.0021/0.0022 IRIS 02/07/98 q1* = 3.5E-111 

RfD = 5E-4 (not used) 

BCF = 14100 FI = 17.5 

2000 0.00080/0.0

108 4,4'-DDT 

50293 

q1* = 0.34 BCF = 53600 (one BCF applies for DDT, DDE and 

DDE) FI = 6.5 

0.00059/ 0.00059 

IRIS 05/01/91 q1* = 0.3411 

RfD = 5E-4 (not used) 

BCF = 53600 (one BCF 

applies for DDT, DDE and 

DDE) FI = 17.5 

2000 0.00022/0.0

109 4,4'-DDE 

72559 

q1* = 0.34 BCF = 53600 FI = 6.5 

0.00059/ 0.00059 

IRIS 08/22/88 q1* = 0.34 

BCF = 53600 (one BCF applies for DDT, DDE and 

DDE) FI = 17.5 

2000 0.00022/0.0

110 4,4'-DDD 

72548 

q1* = 0.24 BCF = 53600 FI = 6.5 

0.00083/ 0.00084 

IRIS 08/22/88 q1* = 0.24 

BCF = 53600 FI = 17.5 

2000 0.00031/0.0

111 Dieldrin 

60571 

q1* = 16 BCF = 4670 FI = 6.5 

0.00014/ 0.00014 

IRIS 01/01/91 q1* = 1611 

RfD = 5E-5 (not used) 

BCF = 4670 FI = 17.5 

2000 0.000052/0.

14
Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

112 alphaEndosulfan 

959988 

BCF = 270 RfD = 6E-3 RfD for endosulfan used 

FI = 6.5 

110/240 IRIS 10/1/94 

ENDOSULFAN #115297 WAS 

USED 

RfD = 6E-3 (RfD for endosulfan used) 

BCF = 270 FI = 17.5 

2000 62/89 

113 beta-Endosulfan 

33213659 

RfD = 6E-3 (RfD for endosulfan 

used) BCF = 270 FI = 6.5 

110/240 IRIS 10/01/94 

ENDOSULFAN #115297 WAS 

USED 

RfD = 6E-3 (RfD for endosulfan used) 

BCF = 270 FI = 17.5 

2000 62/89 

114 Endosulfan 

Sulfate 1031078 

RfD = 6E-3 (RfD for endosulfan 

used) BCF = 270 FI = 6.5 

110/240 IRIS 10/1/94 

ENDOSULFAN #115297 WAS 

USED 

RfD = 6E-3 (RfD for endosulfan used) 

BCF = 270 FI = 17.5 

2000 62/89 

115 Endrin 

72208 

RfD = 3E-4 BCF = 3970 FI = 6.5 

0.76/0.81 IRIS 09/07/88 RfD = 3E-4 10 

BCF = 3970 RSC = 20% b (not used) 

FI = 6.5 

1980 0.76/0.81 

116 Endrin 

Aldehyde 7421934 

RfD = 3E-4 (RfD for Endrin 

used) BCF = 3970 FI = 6.5 

0.76/0.81 IRIS 04/01/91 

for CAS # 72208 was used 

RfD = 3E-4 (RfD for Endrin used) BCF = 3970 FI = 17.5 

2000 0.29/0.30 

117 Heptachlor 

76448 

q1* = 4.5 BCF = 11200 FI = 6.5 

0.00021/ 0.00021 

IRIS 07/01/93 q1* = 4.511 

RfD = 5E-4 (not used) 

BCF = 11200 FI = 17.5 

2000 0.000079/0.

118 Heptachlor 

Epoxide 1024573 

q1* = 9.1 BCF = 11200 (heptachor BCF 

used) FI = 6.5 

0.00010/ 0.00011 

IRIS 07/01/93 q1* = 9.111 

RfD = 1.3E-5 (not used) 

BCF = 11200 (heptachor BCF used) 

FI = 17.5 

2000 0.000039/0.

15
Chemical 

(CAS number) 

Basis for 1998 

nrwqc: q1* or 

RfD/ADI and 

BCF 

1998 nrwqc 

(ug/l) 

w +o/ o only 

Reference 

Cite3 

Basis for 2002 nrwqc: q1*/ 

RfD/ADI, RSC and BCF1,7,8 

Methodology: 

2000 

or 

19802 

2002 nrw

For Consu

Water + o

Organis

119 PCBs q1* =2 (total 

PCBs/congener/ 

isomer) BCF = 31200 FI = 6.5 

0.00017/ 0.00017 

IRIS 06/01/97 for CASRN 1336-36-3 

q1* = 2 (total PCBs/ congener/isomer) 

BCF = 31200 FI = 17.5 

2000 0.000064/0.

120 Toxaphane 

8001352 

q1* = 1.1 BCF = 13100 FI = 6.5 

0.00073/ 0.00075 

IRIS 01/01/91 q1* = 1.1 

BCF = 13100 FI = 17.5 

2000 0.00028/0.0

FOOTNOTES : 1. IRIS values as of May 17, 2002 are presented. IRIS information is presented in some cases even though it may not be used to calculate criteria. All units are as fol

q1* = per mg/kg-day; RfD = mg/kg-d; BCF = L/kg; and FI = 17.5 g/day (unless otherwise noted).

2. Calculations are based on the following methodologies: Guidelines and Methodologies Used in the Preparation of Health Effects Assessment Chapters of the Con

Documents (45FR79347) and Methodology for Deriving Ambient Water Quality Criteria for the Protection of Human Health (2000), EPA-822-B-00-004, Octobe

3. Reference cite refers to an IRIS coversheet, AWQC criterion document or other document which serves as the basis for the criterion.

4. Although a new RfD is available in IRIS, the surface water criteria will not be revised until the National Primary Drinking Water Regulations: Stage 2 Disinfectant

Rule (Stage 2 DBPR) is completed, since public comment on the relative source contribution (RSC) for chloroform is anticipated.

5. In IRIS, EPA has listed thallium sulfate, not thallium alone. The thallium RfD included in the matrix is based on: NOAL = 0.25 mg TL2SO4/kg-d; UF = 3000; frac

TL2SO4 = 0.81.

6. Original 1980 ADIs were expressed as mg/day. These have been converted to mg/kg-day to make them comparable to present day RfDs. All q1*s are in kg-day/m

per mg/kg-day.

7. The fish tissue bioconcentration factor (BCF) from the 1980 criteria documents was retained unless otherwise noted. No BAFs were derived for this effort. 8. Criteria based on carcinogenicity (q1*), reflect 10-6 risk.

9. The q1* of 1.75 mg/kg-d was derived from the risk per unit concentration in drinking water from IRIS: 5x10-5 risk per ug/L in drinking water.

10. This criterion was not revised as part of this effort. EPA has published revisions for this criterion in the Federal Register and is soliciting scientific views on the r

11. Although a q1* and RfD are available in IRIS, the q1*was used to derive the criterion because it resulted in the more stringent criterion.12. These criteria were not published or promulgated in the NTR or CTR. These criteria were calculated based on the RfD presented in IRIS.

16 
References for Relative Source Contribution (RSC) 

a. FR 57 (138), July 17, 1992 b. FR 55 (143), July 25, 1990 c. Cyanide Health Advisory, March 31, 1987. d. FR 56 (20), January 30, 1991 e. 1,1-dichloroethylene Health Advisory, March 31, 1987 f. Ethylbenzene Health Advisory, March 31, 1987 g. Toluene (Draft) Health Advisory, October 1993 h. FR 54 (97), May 22, 1989 i. 1,1,2-trichloroethane Health Advisory, September 1, 1989 j. Ortho-, meta- and para-dichlorobenzenes Health Advisory, March 31, 1987 k. FR 59 (145) July 29, 1994 l. Lindane Health Advisory, March 31, 1987. 

17 
1980 Methodology Calculations 

Using cancer potency, q1*: U sing Reference Dose: 

For consumption of water and organisms: For consumption of water and organisms: 

10-6 ! 70 kg ! 1000 :g/mg Rf D [mg/kg-d] ! 70 kg ! 1000 :g/

AWQC [:g/L] = ------------------------------------------------ AWQC [:g/L] = -------------------------------------------

q1* [k g-d/mg] (2 L/d + (0.0065 kg/d ! BCF [L/kg])) 2 L/d + (0.0065 kg/d ! BCF [L/kg

For consumption of organisms only: F or consumption of organisms only: 

10-6 ! 70 kg ! 1000 :g/mg RfD [mg/kg-d] ! 70 kg ! 1000 :g/m

AWQC [:g/L] = --------------------------------------- AWQC [:g/L] = --------------------------------------------

q1* [kg-d/mg] ! 0.0065 kg/d ! BCF [L/kg] 0.0065 kg/d ! BCF [L/kg] 

AWQC = Ambient water quality criteria = national recommended water quality criteria 

q1* = Cancer potency factor kg-d/mg or per mg/kg-day

RfD = Reference dose mg/kg-d

DI = Drinking water intake 2 L/day

BW = Human body weight 70 kg

FI = Fish intake 0.0065 kg/day

BCF = Bioconcentration factor L/kg

18 
2000 Methodology Calculations 

Linear Approach 

Using cancer potency, q1*: Using Reference Dose: 

For consumption of water and organisms: For consumption of water and organisms: 

( 10-6/q1*) ! 70 kg ! 1000 :g/mg 

AWQC [:g/L] = ---------------------------------------------- AWQC [:g/L] = [ RfD [mg/kg-d] ! RSC * (70 kg/ 2 L/d + (0.0175 kg/d ! 

(2 L/d + (0.0175 kg/d ! BCF [L/kg])) or ( - RSC) 

For consumption of organisms only: For consumption of organisms only: 

(10-6/q1*) ! 70 kg ! 1000 :g/mg 

AWQC [:g/L] = ------------------------------------------ AWQC [:g/L] = [RfD [mg/kg-d] ! RSC ! (70 kg/ (0.0175 kg/d ! BCF [L

0.0175 kg/d ! BCF [L/kg] ( - RSC) 

Nonlinear Approach (Presented for information only- no criteria in matrix based on nonlinear approach currently) 

For consumption of water and organisms: 

AWQC [ug/L] = POD/UF ! RSC ! (BW/DI + (FI ! BCF) 

For consumption of organisms only: 

AWQC [ug/L] = POD/UF ! RSC ! * (BW/(FI !BCF) 

AWQC = Ambient water quality criteria = national recommended water quality criteria

q1* = Cancer potency factor kg-d/mg or per mg/kg-day

RSD = Risk specific dose 10-6 /q1* mg/kg-day

RfD = Reference dose mg/kg-d

DI = Drinking water intake 2 L/day

BW = Human body weight 70 kg

FI = Fish intake 0.0175 kg/day

BCF = Bioconcentration factor L/kg

UF = Uncertainty factor (unitless)

RSC = Relative source contribution (percentage of subtraction)

POD = Point of departure mg/kg-day

19 
--- ----

NRWQC: HUMAN HEALTH CRITERIA CALCULATION MATRIX (November 200

NON PRIORITY POLLUTANTS 

Chemical (CAS 

number) 

Gold Book or 

Criteria 

Document Value 

(ug/L) 

w + o/ o only 

Basis (q1* or 

RfD/ADI) and BCF 

1998 nrwqc 

(ug/L) 

w + o/o 

Reference 

Cite 

Basis (q1* or 

RfD/ADI) and 

BCF1,2 

Methodology 

2000 

or 

1980 

6 Barium 1,000/--- RfD = 7E-2 (08/01/90) 

not used 

1,000/--- Gold Book RfD = 7E-2 

(01/20/1999) not used 

pre-1980 

10 Chlorophenoxy 

Herbicide (2,4,5,-TP) 

93721 

10,--- RfD = 8E-3 (09/07/88) 

not used 

10/--- Gold Book RfD = 8E-3 

(09/07/88) not used RSC = 20% a 

pre-1980 

11 Chlorophenoxy 

herbicide (2,4-D) 

94757 

100/--- RfD = 1E-2 (05/05/88) 100/--- Gold Book RfD = 1E-2 

(05/05/88) RSC = 20% b 

pre-1980 

15 Ether, Bis 

(Chloromethyl) 542881 

0.00000376/ 0.00184 (based on 

q1* = 9299.8) 

q1* = 2.2E+2 

BCF = 63 FI = 6.5 

0.00013/ 0.00078 

IRIS 01/01/91 

q1* = 2.2E+2 

BCF = 63 FI = 17.5 

2000 

20 Iron 

7439896 

300/--- 300/--- Gold Book pre-1980 

22 Manganese 

7439965 

50/100 RfD = 1.4E-1 

(01/01/93) not used 

50/100 Gold Book RfD = 1.4E-1 

(05/01/1996) not used 

pre-1980 

23 Methoxychlor 

72435 

100/--- RfD = 5E-3 (08/01/91) 

not used 

100/--- Gold Book RfD = 5E-3 

(08/01/91) RSC = 20 %c,d 

(not used) 

pre-1980 

25 Nitrates 

14797558 

10,000/--- 1.6E+0 (10/01/91) 

not used 

10,000/--- Gold Book RfD = 1.6E+0 

(10/01/91) not used 

pre-1980 

26 Nitrosamines 0.0008/1.24 BH = 43.46 

BCF = 0.20 (q1* = 1.5E+2 07/01/93 not used) 

0.0008/1.24 EPA 440/5-

80-064 

BH = 43.46 

BCF = 0.20 (q1* = 1.5E+2 07/01/93 not used) 

pre-1980 

20
--- -----

Chemical (CAS 

number) 

Gold Book or 

Criteria 

Document Value 

(ug/L) 

w + o/ o only 

Basis (q1* or 

RfD/ADI) and BCF 

1998 nrwqc 

(ug/L) 

w + o/o 

Reference 

Cite 

Basis (q1* or 

RfD/ADI) and 

BCF1,2 

Methodology 

2000 

or 

1980 

27 Dinitrophenols 

25550587 

70/14,300 BCF = 1.51 

RfD = 0.002 FI = 6.5 

70/14,300 EPA 440/5-

80-063 

BCF = 1.51 RfD = 2E-3 FI = 17.5 

2000 

28 Nitrosodibutylamine,N 

924163 

0.0064/0.587 q1* = 5.43 

BCF = 3.38 FI = 6.5 

0.0064/0.587 EPA 440/5-

80-064 

q1* = 5.43 BCF = 3.38 FI = 17.5 

2000 

29 Nitrosodiethylamine,N 

55185 

0.0008/1.24 BH = 43.46 

BCF = 0.20 (q1* = 1.5E+2 07/01/93 not used) 

0.0008/1.24 EPA 440/5-

80-064 

BH = 43.46 

BCF = 0.20 (q1* = 1.5E+2 07/01/93 not used) 

pre-1980 

30 Nitrosopyrrolidine,N 

930552 

0.016/91.9 q1* = 2.13 

BCF = 0.055 FI = 6.5 

0.016/91.9 EPA 440/5-

80-064 

q1* = 2.13 BCF = 0.055 FI = 17.5 

2000 

34 Pentachlorobenzene 

608935 

74/85 (based on 

ADI = 1.17) 

RfD = 8E-4 BCF = 2,125 FI = 6.5 

3.5/4.1 IRIS 

03/01/88 

RfD = 8E-4 BCF = 2,125 FI = 17.5 

2000 

38 Solids Dissolved and 

Salinity 

250,000/--- 250,000/--- Gold Book pre-1980 

43 Tetrachlorobenzene, 

1,2,4,5-95943 

38/48 (based on 

ADI = 0.35) 

RfD = 3E-4 BCF = 1,125 FI = 6.5 

2.3/2.9 IRIS 

03/01/91 

RfD = 3E-4 BCF = 1,125 FI = 17.5 

2000 

45 Trichlophenol,2,4,5 

95954 

2,600/9800 (based 

on ADI = 7) 

RfD = 1E-1 BCF = 110 FI = 6.5 

2,600/9800 IRIS 

03/01/88 

RfD = 1E-1 BCF = 110 FI = 17.5 

2000 

FOOTNOTES: 1. Criteria based on carcinogenicity (q1*), reflect 10-6 risk. 

2. The fish tissue bioconcentration factor (BCF) from the 1980 criteria documents was retained unless otherwise noted. No BAFs were derived for this effort. 3. Reference cite refers to an IRIS coversheet, AWQC criterion document or other document which serves as the basis for the criterion. 

References for Relative Source Contribution (RSC) a. Silvex (2,4,5-TP) Health Advisory 1988 b. 2,4-dichlorophenoxyacetic acid (2,4-D) Health Advisory, March 31, 1987 c. FR 56 (20), January 30, 1991 d. Methoxychlor Health Advisory, March 31, 1987 

21