# WAC 173-201A-240: WAC 173-201A-240. Toxic substances

> Washington · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_173_201A_240

## Section

- **Citation:** WAC 173-201A-240
- **Heading:** WAC 173-201A-240. Toxic substances
- **Jurisdiction:** Washington
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Washington Administrative Code / Title 173 / Chapter 173-201A / Section 173-201A-240

## Text

(1) Toxic substances shall not be introduced above natural background levels in waters of the state which have the potential either singularly or cumulatively to adversely affect characteristic water uses, cause acute or chronic toxicity to the most sensitive biota dependent upon those waters, or adversely affect public health, as determined by the department.
(2) The department shall employ or require chemical testing, acute and chronic toxicity testing, and biological assessments, as appropriate, to evaluate compliance with subsection (1) of this section and to ensure that aquatic communities and the existing and designated uses of waters are being fully protected.
(3) USEPA Quality Criteria for Water, 1986, as revised, shall be used in the use and interpretation of the values listed in subsection (5) of this section.
(4) Concentrations of toxic, and other substances with toxic propensities not listed in Table 240 of this section shall be determined in consideration of USEPA Quality Criteria for Water, 1986, and as revised, and other relevant information as appropriate.
(5) The following criteria, found in Table 240, shall be applied to all surface waters of the state of Washington. Values are µg/L for all substances except ammonia and chloride which are mg/L, tissue-based aquatic life criteria for selenium, perfluorooctane sulfonic acid (PFOS), and perfluorooctanoic acid (PFOA) which are mg/kg, and asbestos which is million fibers/L. The department shall formally adopt any appropriate revised criteria as part of this chapter in accordance with the provisions established in chapter 34.05 RCW, the Administrative Procedure Act. The department shall ensure there are early opportunities for public review and comment on proposals to develop revised criteria.
tanoic acid (PFOA) which are mg/kg, and asbestos which is million fibers/L. The department shall formally adopt any appropriate revised criteria as part of this chapter in accordance with the provisions established in chapter 34.05 RCW, the Administrative Procedure Act. The department shall ensure there are early opportunities for public review and comment on proposals to develop revised criteria.
(a) Aquatic life protection . The department may revise the criteria in Table 240 for aquatic life on a statewide or water body-specific basis as needed to protect aquatic life occurring in waters of the state and to increase the technical accuracy of the criteria being applied. The department shall formally adopt any appropriate revised criteria as part of this chapter in accordance with the provisions established in chapter 34.05 RCW, the Administrative Procedure Act.
(b) Human health protection. The following provisions apply to the human health criteria in Table 240. All waters shall maintain a level of water quality when entering downstream waters that provides for the attainment and maintenance of the water quality standards of those downstream waters, including the waters of another state. The human health criteria in the tables were calculated using a fish consumption rate of 175 g/day. Criteria for carcinogenic substances were calculated using a cancer risk level equal to one-in-one-million. The human health criteria calculations and variables include chronic durations of exposure up to 70 years. All human health criteria for metals are for total metal concentrations, unless otherwise noted. Dischargers have the obligation to reduce toxics in discharges through the use of AKART
Criteria for carcinogenic substances were calculated using a cancer risk level equal to one-in-one-million. The human health criteria calculations and variables include chronic durations of exposure up to 70 years. All human health criteria for metals are for total metal concentrations, unless otherwise noted. Dischargers have the obligation to reduce toxics in discharges through the use of AKART.
Table 240
Toxics Substances Criteria
Compound/Chemical Chemical Abstracts Service (CAS)# Aquatic Life Criteria - Freshwater Aquatic Life Criteria - Marine Water Human Health Criteria for Consumption of: Acute Chronic Acute Chronic Water & Organisms Organisms Only Metals: Aluminum 7429905 Western Cordillera: 288 Marine West Coast Forest: 630 Cold Desert: 1,400 (a,e) Western Cordillera: 180 Marine West Coast Forest: 302 Cold Desert: 720 (b,e) - - - - Antimony 7440360 - - - - 6 90 Arsenic 7440382 300 (a,f) 130 (b,f) 69 (a,f,g) 36 (b,f,g) 0.018 (A) 0.14 (A) Asbestos 1332214 - - - - 7,000,000 fibers/L (B) - Beryllium 7440417 - - - - - - Cadmium 7440439 (a,f,h) (b,f,i) 33 (a,f) 7.9 (b,f) - - Chromium (III) 16065831 (a,j,k) (b,j,l) - - - - Chromium (VI) 18540299 18 (a,f,m) 6.6 (b,f,n) 1,100 (a,f,g) 50 (b,f,g) - - Copper 7440508 Western Cordillera: 1.4 Marine West Coast Forest: 2.4 Cold Desert: 4.8 (a,f,o) Western Cordillera: 1.2 Marine West Coast Forest: 1.8 Cold Desert: 3.2 (b,f,p) 4.8 (a,f,g) 3.1 (b,f,g) 1,300 (B) - Lead 7439921 (a,f,q) (b,f,r) 210 (a,f,g) 8.1 (b,f,g) - - Mercury 7439976 1.4 (a,f,s) 0.012 (b,t,u) 1.8 (a,f,g) 0.025 (b,t,u) - - Methylmercury 22967926 - - - - - 0.03 (C) Nickel 7440020 (a,f,v) (b,f,w) 74 (a,f,g) 8.2 (b,f,g) 80 100 Selenium 7782492 (x) (y) 290 (a,f,g) 71 (b,f,g) 60 200 Silver 7440224 (a,f,z) (b,f,aa) 2.3 (a,f,g) 0.91 (b,f,g) - - Thallium 7440280 - - - - 0.24 0.27 Zinc 7440666 (a,f,bb) (b,f,cc) 90 (a,f,g) 81 (b,f,g) 1,000 1,000 Other chemicals: 1,1,1-Trichloroethane 71556 - - - - 20,000 50,000 1,1,2,2-Tetrachloroethane 79345 - - - - 0.1 (D) 0.3 (D) 1,1,2-Trichloroethane 79005 - - - - 0.35 (D) 0.9
,f,g) 80 100 Selenium 7782492 (x) (y) 290 (a,f,g) 71 (b,f,g) 60 200 Silver 7440224 (a,f,z) (b,f,aa) 2.3 (a,f,g) 0.91 (b,f,g) - - Thallium 7440280 - - - - 0.24 0.27 Zinc 7440666 (a,f,bb) (b,f,cc) 90 (a,f,g) 81 (b,f,g) 1,000 1,000 Other chemicals: 1,1,1-Trichloroethane 71556 - - - - 20,000 50,000 1,1,2,2-Tetrachloroethane 79345 - - - - 0.1 (D) 0.3 (D) 1,1,2-Trichloroethane 79005 - - - - 0.35 (D) 0.90 (D) 1,1-Dichloroethane 75343 - - - - - - 1,1-Dichloroethylene 75354 - - - - 700 4,000 1,2,4-Trichlorobenzene 120821 - - - - 0.036 (D) 0.037 (D) 1,2-Dichlorobenzene 95501 - - - - 700 800 1,2-Dichloroethane 107062 - - - - 8.9 (D) 73 (D) 1,2-Dichloropropane 78875 - - - - 0.71 (D) 3.1 (D) 1,3-Dichloropropene 542756 - - - - 0.22 (D) 1.2 (D) 1,2-Diphenylhydrazine 122667 - - - - 0.01 (D) 0.02 (D) 1,2-Trans-Dichloroethylene 156605 - - - - 200 1,000 1,3-Dichlorobenzene 541731 - - - - 2 2 1,4-Dichlorobenzene 106467 - - - - 200 200 2,3,7,8-TCDD (Dioxin) 1746016 - - - - 0.000000064 0.000000064 2,4,6-Trichlorophenol 88062 - - - - 0.25 (D) 0.28 (D) 2,4-Dichlorophenol 120832 - - - - 10 10 2,4-Dimethylphenol 105679 - - - - 85 97 2,4-Dinitrophenol 51285 - - - - 30 100 2,4-Dinitrotoluene 121142 - - - - 0.039 (D) 0.18 (D) 2,6-Dinitrotoluene 606202 - - - - - - 2-Chloroethyvinyl Ether 110758 - - - - - - 2-Chloronaphthalene 91587 - - - - 100 100 2-Chlorophenol 95578 - - - - 15 17 2-Methyl-4,6-Dinitrophenol (4,6-dinitro-o-cresol) 534521 - - - - 3 7 2-Nitrophenol 88755 - - - - - - 3,3'-Dichlorobenzidine 91941 - - - - 0.0031 (D) 0.0033 (D) 3-Methyl-4-Chlorophenol (parachlorometa cresol) 59507 - - - - 36 36 4,4'-DDD 72548 - - - - 0.0000079 (D) 0.0000079 (D) 4,4'-DDE 72559 - - - - 0.00000088 (D) 0.00000088 (D) 4,4'-DDT 50293 - - - - 0.0000012 (D) 0.0000012 (D) 4,4'-DDT (and metabolites) 50293 1.1 (c) 0.001 (d) 0.13 (c) 0.001 (d) - - 4-Bromophenyl Phenyl Ether 101553 - - - - - - 4-Chorophenyl Phenyl Ether 7005723 - - - - - - 4-Nitrophenol 100027 - - - - - - Acenaphthene 83329 - - - - 30 30 Acenaphthylene 208968 - - - - - - Acrolein 107028 3 (a) 3
9 (D) 4,4'-DDE 72559 - - - - 0.00000088 (D) 0.00000088 (D) 4,4'-DDT 50293 - - - - 0.0000012 (D) 0.0000012 (D) 4,4'-DDT (and metabolites) 50293 1.1 (c) 0.001 (d) 0.13 (c) 0.001 (d) - - 4-Bromophenyl Phenyl Ether 101553 - - - - - - 4-Chorophenyl Phenyl Ether 7005723 - - - - - - 4-Nitrophenol 100027 - - - - - - Acenaphthene 83329 - - - - 30 30 Acenaphthylene 208968 - - - - - - Acrolein 107028 3 (a) 3 (b) - - 1.0 1.1 Acrylonitrile 107131 - - - - 0.019 (D) 0.028 (D) Aldrin 309002 3 (c,dd) 0.0019 (d,dd) 1.3 (c,e) 0.0019 (d,dd) 0.000000041 (D) 0.000000041 (D) alpha-BHC 319846 - - - - 0.000048 (D) 0.000048 (D) alpha-Endosulfan 959988 0.22 (c,ee) 0.056 (d,ee) 0.034 (c,ee) 0.0087 (d,ee) 6 7 Ammonia 7664417 (a,ff,ii) (b,gg,ii) 0.233 (a,hh,ii) 0.035 (b,hh,ii) - - Anthracene 120127 - - - - 100 100 Benzene 71432 - - - - 0.44 (D) 1.6 (D) Benzidine 92875 - - - - 0.00002 (D) 0.000023 (D) Benzo(a) Anthracene 56553 - - - - 0.00016 (D) 0.00016 (D) Benzo(a) Pyrene 50328 - - - - 0.000016 (D) 0.000016 (D) Benzo(b) Fluoranthene 205992 - - - - 0.00016 (D) 0.00016 (D) Benzo(ghi) Perylene 191242 - - - - - - Benzo(k) Fluoranthene 207089 - - - - 0.0016 (D) 0.0016 (D) beta-BHC 319857 - - - - 0.0013 (D) 0.0014 (D) beta-Endosulfan 33213659 0.22 (c,ee) 0.056 (d,ee) 0.034 (c,ee) 0.0087 (d,ee) 9.7 10 Bis(2-Chloroethoxy) Methane 111911 - - - - - - Bis(2-Chloroethyl) Ether 111444 - - - - 0.02 (D) 0.06 (D) Bis(2-Chloro-1-Methylethyl) Ether 108601 - - - - 400 900 Bis(2-Ethylhexyl) Phthalate 117817 - - - - 0.045 (D) 0.046 (D) Bromoform 75252 - - - - 4.6 (D) 12 (D) Butylbenzyl Phthalate 85687 - - - - 0.013 (D) 0.013 (D) Carbaryl 63252 2.1 (a) 2.1 (b) 1.6 (a) - - - Carbon Tetrachloride 56235 - - - - 0.2 (D) 0.35 (D) Chlordane 57749 2.4 (c) 0.0043 (d) 0.09 (c) 0.004 (d) 0.000022 (D) 0.000022 (D) Chloride (dissolved) 168870 860 (a,hh,jj) 230 (b,hh,jj) - - - - Chlorine (total residual) 7782505 19 (a) 11 (b) 13 (a) 7.5 (b) - - Chlorobenzene 108907 - - - - 100 200 Chlorodibromomethane 124481 - - - - 0.60 (D) 2.2 (D) Chloroethane 75003 - - - - - - Chloroform 6
- - Carbon Tetrachloride 56235 - - - - 0.2 (D) 0.35 (D) Chlordane 57749 2.4 (c) 0.0043 (d) 0.09 (c) 0.004 (d) 0.000022 (D) 0.000022 (D) Chloride (dissolved) 168870 860 (a,hh,jj) 230 (b,hh,jj) - - - - Chlorine (total residual) 7782505 19 (a) 11 (b) 13 (a) 7.5 (b) - - Chlorobenzene 108907 - - - - 100 200 Chlorodibromomethane 124481 - - - - 0.60 (D) 2.2 (D) Chloroethane 75003 - - - - - - Chloroform 67663 - - - - 100 600 Chlorpyrifos 2921882 0.083 (a) 0.041 (b) 0.011 (a) 0.0056 (b) - - Chrysene 218019 - - - - 0.016 (D) 0.016 (D) Cyanide 57125 8.2 (a,kk) 1.9 (b,kk) 1 (a,kk,ll) 1 (b,kk,ll) 9 (E) 100 (E) delta-BHC 319868 - - - - - - Demeton 8065483 - 0.1 (b) - 0.1 (b) - - Diazinon 333415 0.17 (a) 0.17 (b) 0.82 (a) 0.82 (b) - - Dibenzo(a,h) Anthracene 53703 - - - - 0.000016 (D) 0.000016 (D) Dichlorobromomethane 75274 - - - - 0.73 (D) 2.8 (D) Dieldrin 60571 0.24 (a,dd) 0.056 (b,dd) 0.71 (c,dd) 0.0019 (d,dd) 0.000000070 (D) 0.000000070 (D) Diethyl Phthalate 84662 - - - - 200 200 Dimethyl Phthalate 131113 - - - - 600 600 Di-n-Butyl Phthalate 84742 - - - - 8 8 Di-n-Octyl Phthalate 117840 - - - - - - Endosulfan Sulfate 1031078 - - - - 9 10 Endrin 72208 0.086 (a) 0.036 (b) 0.037 (c) 0.0023 (d) 0.002 0.002 Endrin Aldehyde 7421934 - - - - 0.034 0.035 Ethylbenzene 100414 - - - - 29 31 Fluoranthene 206440 - - - - 6 6 Fluorene 86737 - - - - 10 10 Guthion 86500 - 0.01 (b) - 0.01 (b) - - Hexachlorocyclohexane (gamma-BHC; Lindane) 58899 0.95 (a) 0.08 (d) 0.16 (c) - 0.43 0.43 Heptachlor 76448 0.52 (c) 0.0038 (d) 0.053 (c) 0.0036 (d) 0.00000034 (D) 0.00000034 (D) Heptachlor Epoxide 1024573 - - - - 0.0000024 (D) 0.0000024 (D) Hexachlorobenzene 118741 - - - - 0.0000050 (D) 0.0000050 (D) Hexachlorobutadiene 87683 - - - - 0.01 (D) 0.01 (D) Hexachlorocyclopentadiene 77474 - - - - 1 1 Hexachloroethane 67721 - - - - 0.02 (D) 0.02 (D) Indeno(1,2,3-cd) Pyrene 193395 - - - - 0.00016 (D) 0.00016 (D) Isophorone 78591 - - - - 27 (D) 110 (D) Malathion 121755 - 0.1 (b) - 0.1 (b) - - Methoxychlor 72435 - 0.03 (b) - 0.03 (b) - - Methyl Bromide 74839 - -
18741 - - - - 0.0000050 (D) 0.0000050 (D) Hexachlorobutadiene 87683 - - - - 0.01 (D) 0.01 (D) Hexachlorocyclopentadiene 77474 - - - - 1 1 Hexachloroethane 67721 - - - - 0.02 (D) 0.02 (D) Indeno(1,2,3-cd) Pyrene 193395 - - - - 0.00016 (D) 0.00016 (D) Isophorone 78591 - - - - 27 (D) 110 (D) Malathion 121755 - 0.1 (b) - 0.1 (b) - - Methoxychlor 72435 - 0.03 (b) - 0.03 (b) - - Methyl Bromide 74839 - - - - 300 2,400 Methyl Chloride 74873 - - - - - - Methylene Chloride 75092 - - - - 10 (D) 100 (D) Mirex 2385855 - 0.001 (b) - 0.001 (b) - - N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine-quinone (6PPD-quinone) 0.012 (a) - - - - - Napthalene 91203 - - - - - - Nitrobenzene 98953 - - - - 30 100 N-Nitrosodimethylamine 62759 - - - - 0.00065 (D) 0.34 (D) N-Nitrosodi-n-Propylamine 621647 - - - - 0.0044 (D) 0.058 (D) N-Nitrosodiphenylamine 86306 - - - - 0.62 (D) 0.69 (D) Nonylphenol 84852153 28 (a) 6.6 (b) 7 (a) 1.7 (b) - - Parathion 56382 0.065 (a) 0.013 (b) - - - - Pentachlorophenol (PCP) 87865 (a,mm) (b,nn) 13 (a) 6.7 (b) 0.002 (D) 0.002 (D) Perfluorooctane sulfonic acid (PFOS) 3,000 (a) (oo) 550 (a) - - - Perfluorooctanoic acid (PFOA) 49,000 (a) (pp) 7,000 (a) - - - Phenanthrene 85018 - - - - - - Phenol 108952 - - - - 9000 70000 Polychlorinated Biphenyls (PCBs) 2 (d) 0.014 (d) 10 (d) 0.03 (d) 0.000007 (F) 0.000007 (F) Pyrene 129000 - - - - 8 8 Tetrachloroethylene 127184 - - - - 2.4 (D) 2.9 (D) Toluene 108883 - - - - 72 130 Toxaphene 8001352 0.73 (a) 0.0002 (b) 0.21 (a) 0.0002 (b) 0.000032 (D) 0.000032 (D) Tributyltin 0.46 (a) 0.072 (b) 0.42 (a) 0.0074 (b) - - Trichloroethylene 79016 - - - - 0.3 (D) 0.7 (D) Vinyl Chloride 75014 - - - - 0.02 (D) 0.18 (D)
Compound/Chemical
Chemical Abstracts Service
(CAS)#
Aquatic Life
Criteria - Freshwater
Aquatic Life Criteria -
Marine Water
Human Health Criteria
for Consumption of:
Acute
Chronic
Acute
Chronic
Water & Organisms
Organisms Only
Metals:
Aluminum
7429905
Western Cordillera: 288
Marine West Coast
Forest: 630
Cold Desert: 1,400
(a,e)
Western Cordillera: 180
Marine West Coast
For
- - - 0.02 (D) 0.18 (D)
Compound/Chemical
Chemical Abstracts Service
(CAS)#
Aquatic Life
Criteria - Freshwater
Aquatic Life Criteria -
Marine Water
Human Health Criteria
for Consumption of:
Acute
Chronic
Acute
Chronic
Water & Organisms
Organisms Only
Metals:
Aluminum
7429905
Western Cordillera: 288
Marine West Coast
Forest: 630
Cold Desert: 1,400
(a,e)
Western Cordillera: 180
Marine West Coast
Forest: 302
Cold Desert: 720
(b,e)
-
-
-
-
Antimony
7440360
-
-
-
-
6
90
Arsenic
7440382
300
(a,f)
130
(b,f)
69
(a,f,g)
36
(b,f,g)
0.018
(A)
0.14
(A)
Asbestos
1332214
-
-
-
-
7,000,000
fibers/L (B)
-
Beryllium
7440417
-
-
-
-
-
-
Cadmium
7440439
(a,f,h)
(b,f,i)
33
(a,f)
7.9
(b,f)
-
-
Chromium (III)
16065831
(a,j,k)
(b,j,l)
-
-
-
-
Chromium (VI)
18540299
18
(a,f,m)
6.6
(b,f,n)
1,100
(a,f,g)
50
(b,f,g)
-
-
Copper
7440508
Western Cordillera: 1.4
Marine West Coast
Forest: 2.4
Cold Desert: 4.8
(a,f,o)
Western Cordillera: 1.2
Marine West Coast
Forest: 1.8
Cold Desert: 3.2
(b,f,p)
4.8
(a,f,g)
3.1
(b,f,g)
1,300
(B)
-
Lead
7439921
(a,f,q)
(b,f,r)
210
(a,f,g)
8.1
(b,f,g)
-
-
Mercury
7439976
1.4
(a,f,s)
0.012
(b,t,u)
1.8
(a,f,g)
0.025
(b,t,u)
-
-
Methylmercury
22967926
-
-
-
-
-
0.03
(C)
Nickel
7440020
(a,f,v)
(b,f,w)
74
(a,f,g)
8.2
(b,f,g)
80
100
Selenium
7782492
(x)
(y)
290
(a,f,g)
71
(b,f,g)
60
200
Silver
7440224
(a,f,z)
(b,f,aa)
2.3
(a,f,g)
0.91
(b,f,g)
-
-
Thallium
7440280
-
-
-
-
0.24
0.27
Zinc
7440666
(a,f,bb)
(b,f,cc)
90
(a,f,g)
81
(b,f,g)
1,000
1,000
Other chemicals:
1,1,1-Trichloroethane
71556
-
-
-
-
20,000
50,000
1,1,2,2-Tetrachloroethane
79345
-
-
-
-
0.1
(D)
0.3
(D)
1,1,2-Trichloroethane
79005
-
-
-
-
0.35
(D)
0.90
(D)
1,1-Dichloroethane
75343
-
-
-
-
-
-
1,1-Dichloroethylene
75354
-
-
-
-
700
4,000
1,2,4-Trichlorobenzene
120821
-
-
-
-
0.036
(D)
0.037
(D)
1,2-Dichlorobenzene
95501
-
-
-
-
700
800
1,2-Dichloroethane
107062
-
-
-
-
8.9
(D)
73
(D)
1,2-Dichloropropane
78875
-
-
-
-
0.71
(D)
3.1
(D)
1,3-Dichloropropene
542756
-
-
-
-
0.22
(D)
1.2
(D)
1,2-Diphenylhydrazine
122667
-
-
-
-
0.01
(D)
0.02
(D)
1,2-Trans-Dichloroet
oroethane
75343
-
-
-
-
-
-
1,1-Dichloroethylene
75354
-
-
-
-
700
4,000
1,2,4-Trichlorobenzene
120821
-
-
-
-
0.036
(D)
0.037
(D)
1,2-Dichlorobenzene
95501
-
-
-
-
700
800
1,2-Dichloroethane
107062
-
-
-
-
8.9
(D)
73
(D)
1,2-Dichloropropane
78875
-
-
-
-
0.71
(D)
3.1
(D)
1,3-Dichloropropene
542756
-
-
-
-
0.22
(D)
1.2
(D)
1,2-Diphenylhydrazine
122667
-
-
-
-
0.01
(D)
0.02
(D)
1,2-Trans-Dichloroethylene
156605
-
-
-
-
200
1,000
1,3-Dichlorobenzene
541731
-
-
-
-
2
2
1,4-Dichlorobenzene
106467
-
-
-
-
200
200
2,3,7,8-TCDD (Dioxin)
1746016
-
-
-
-
0.000000064
0.000000064
2,4,6-Trichlorophenol
88062
-
-
-
-
0.25
(D)
0.28
(D)
2,4-Dichlorophenol
120832
-
-
-
-
10
10
2,4-Dimethylphenol
105679
-
-
-
-
85
97
2,4-Dinitrophenol
51285
-
-
-
-
30
100
2,4-Dinitrotoluene
121142
-
-
-
-
0.039
(D)
0.18
(D)
2,6-Dinitrotoluene
606202
-
-
-
-
-
-
2-Chloroethyvinyl Ether
110758
-
-
-
-
-
-
2-Chloronaphthalene
91587
-
-
-
-
100
100
2-Chlorophenol
95578
-
-
-
-
15
17
2-Methyl-4,6-Dinitrophenol
(4,6-dinitro-o-cresol)
534521
-
-
-
-
3
7
2-Nitrophenol
88755
-
-
-
-
-
-
3,3'-Dichlorobenzidine
91941
-
-
-
-
0.0031
(D)
0.0033
(D)
3-Methyl-4-Chlorophenol (parachlorometa cresol)
59507
-
-
-
-
36
36
4,4'-DDD
72548
-
-
-
-
0.0000079
(D)
0.0000079
(D)
4,4'-DDE
72559
-
-
-
-
0.00000088
(D)
0.00000088
(D)
4,4'-DDT
50293
-
-
-
-
0.0000012
(D)
0.0000012
(D)
4,4'-DDT (and metabolites)
50293
1.1
(c)
0.001
(d)
0.13
(c)
0.001
(d)
-
-
4-Bromophenyl
Phenyl Ether
101553
-
-
-
-
-
-
4-Chorophenyl Phenyl Ether
7005723
-
-
-
-
-
-
4-Nitrophenol
100027
-
-
-
-
-
-
Acenaphthene
83329
-
-
-
-
30
30
Acenaphthylene
208968
-
-
-
-
-
-
Acrolein
107028
3
(a)
3
9
(D)
4,4'-DDE
72559
-
-
-
-
0.00000088
(D)
0.00000088
(D)
4,4'-DDT
50293
-
-
-
-
0.0000012
(D)
0.0000012
(D)
4,4'-DDT (and metabolites)
50293
1.1
(c)
0.001
(d)
0.13
(c)
0.001
(d)
-
-
4-Bromophenyl
Phenyl Ether
101553
-
-
-
-
-
-
4-Chorophenyl Phenyl Ether
7005723
-
-
-
-
-
-
4-Nitrophenol
100027
-
-
-
-
-
-
Acenaphthene
83329
-
-
-
-
30
30
Acenaphthylene
208968
-
-
-
-
-
-
Acrolein
107028
3
(a)
3
(b)
-
-
1.0
1.1
Acrylonitrile
107131
-
-
-
-
0.019
(D)
0.028
(D)
Aldrin
309002
3
(c,dd)
0.0019
(d,dd)
1.3
(c,e)
0.0019
(d,dd)
0.000000041
(D)
0.000000041
(D)
alpha-BHC
319846
-
-
-
-
0.000048
(D)
0.000048
(D)
alpha-Endosulfan
959988
0.22
(c,ee)
0.056
(d,ee)
0.034
(c,ee)
0.0087
(d,ee)
6
7
Ammonia
7664417
(a,ff,ii)
(b,gg,ii)
0.233
(a,hh,ii)
0.035
(b,hh,ii)
-
-
Anthracene
120127
-
-
-
-
100
100
Benzene
71432
-
-
-
-
0.44
(D)
1.6
(D)
Benzidine
92875
-
-
-
-
0.00002
(D)
0.000023
(D)
Benzo(a) Anthracene
56553
-
-
-
-
0.00016
(D)
0.00016
(D)
Benzo(a) Pyrene
50328
-
-
-
-
0.000016
(D)
0.000016
(D)
Benzo(b) Fluoranthene
205992
-
-
-
-
0.00016
(D)
0.00016
(D)
Benzo(ghi) Perylene
191242
-
-
-
-
-
-
Benzo(k) Fluoranthene
207089
-
-
-
-
0.0016
(D)
0.0016
(D)
beta-BHC
319857
-
-
-
-
0.0013
(D)
0.0014
(D)
beta-Endosulfan
33213659
0.22
(c,ee)
0.056
(d,ee)
0.034
(c,ee)
0.0087
(d,ee)
9.7
10
Bis(2-Chloroethoxy)
Methane
111911
-
-
-
-
-
-
Bis(2-Chloroethyl) Ether
111444
-
-
-
-
0.02
(D)
0.06
(D)
Bis(2-Chloro-1-Methylethyl)
Ether
108601
-
-
-
-
400
900
Bis(2-Ethylhexyl) Phthalate
117817
-
-
-
-
0.045
(D)
0.046
(D)
Bromoform
75252
-
-
-
-
4.6
(D)
12
(D)
Butylbenzyl Phthalate
85687
-
-
-
-
0.013
(D)
0.013
(D)
Carbaryl
63252
2.1
(a)
2.1
(b)
1.6
(a)
-
-
-
Carbon Tetrachloride
56235
-
-
-
-
0.2
(D)
0.35
(D)
Chlordane
57749
2.4
(c)
0.0043
(d)
0.09
(c)
0.004
(d)
0.000022
(D)
0.000022
(D)
Chloride (dissolved)
168870
860
(a,hh,jj)
230
(b,hh,jj)
-
-
-
-
Chlorine (total residual)
7782505
19
(a)
11
(b)
13
(a)
7.5
6
(D)
Bromoform
75252
-
-
-
-
4.6
(D)
12
(D)
Butylbenzyl Phthalate
85687
-
-
-
-
0.013
(D)
0.013
(D)
Carbaryl
63252
2.1
(a)
2.1
(b)
1.6
(a)
-
-
-
Carbon Tetrachloride
56235
-
-
-
-
0.2
(D)
0.35
(D)
Chlordane
57749
2.4
(c)
0.0043
(d)
0.09
(c)
0.004
(d)
0.000022
(D)
0.000022
(D)
Chloride (dissolved)
168870
860
(a,hh,jj)
230
(b,hh,jj)
-
-
-
-
Chlorine (total residual)
7782505
19
(a)
11
(b)
13
(a)
7.5
(b)
-
-
Chlorobenzene
108907
-
-
-
-
100
200
Chlorodibromomethane
124481
-
-
-
-
0.60
(D)
2.2
(D)
Chloroethane
75003
-
-
-
-
-
-
Chloroform
67663
-
-
-
-
100
600
Chlorpyrifos
2921882
0.083
(a)
0.041
(b)
0.011
(a)
0.0056
(b)
-
-
Chrysene
218019
-
-
-
-
0.016
(D)
0.016
(D)
Cyanide
57125
8.2
(a,kk)
1.9
(b,kk)
1
(a,kk,ll)
1
(b,kk,ll)
9
(E)
100
(E)
delta-BHC
319868
-
-
-
-
-
-
Demeton
8065483
-
0.1
(b)
-
0.1
(b)
-
-
Diazinon
333415
0.17
(a)
0.17
(b)
0.82
(a)
0.82
(b)
-
-
Dibenzo(a,h) Anthracene
53703
-
-
-
-
0.000016
(D)
0.000016
(D)
Dichlorobromomethane
75274
-
-
-
-
0.73
(D)
2.8
(D)
Dieldrin
60571
0.24
(a,dd)
0.056
(b,dd)
0.71
(c,dd)
0.0019
(d,dd)
0.000000070
(D)
0.000000070
(D)
Diethyl Phthalate
84662
-
-
-
-
200
200
Dimethyl Phthalate
131113
-
-
-
-
600
600
Di-n-Butyl Phthalate
84742
-
-
-
-
8
8
Di-n-Octyl Phthalate
117840
-
-
-
-
-
-
Endosulfan Sulfate
1031078
-
-
-
-
9
10
Endrin
72208
0.086
(a)
0.036
(b)
0.037
(c)
0.0023
(d)
0.002
0.002
Endrin Aldehyde
7421934
-
-
-
-
0.034
0.035
Ethylbenzene
100414
-
-
-
-
29
31
Fluoranthene
206440
-
-
-
-
6
6
Fluorene
86737
-
-
-
-
10
10
Guthion
86500
-
0.01
(b)
-
0.01
(b)
-
-
Hexachlorocyclohexane
(gamma-BHC; Lindane)
58899
0.95
(a)
0.08
(d)
0.16
(c)
-
0.43
0.43
Heptachlor
76448
0.52
(c)
0.0038
(d)
0.053
(c)
0.0036
-
-
-
-
9
10
Endrin
72208
0.086
(a)
0.036
(b)
0.037
(c)
0.0023
(d)
0.002
0.002
Endrin Aldehyde
7421934
-
-
-
-
0.034
0.035
Ethylbenzene
100414
-
-
-
-
29
31
Fluoranthene
206440
-
-
-
-
6
6
Fluorene
86737
-
-
-
-
10
10
Guthion
86500
-
0.01
(b)
-
0.01
(b)
-
-
Hexachlorocyclohexane
(gamma-BHC; Lindane)
58899
0.95
(a)
0.08
(d)
0.16
(c)
-
0.43
0.43
Heptachlor
76448
0.52
(c)
0.0038
(d)
0.053
(c)
0.0036
(d)
0.00000034
(D)
0.00000034
(D)
Heptachlor Epoxide
1024573
-
-
-
-
0.0000024
(D)
0.0000024
(D)
Hexachlorobenzene
118741
-
-
-
-
0.0000050
(D)
0.0000050
(D)
Hexachlorobutadiene
87683
-
-
-
-
0.01
(D)
0.01
(D)
Hexachlorocyclopentadiene
77474
-
-
-
-
1
1
Hexachloroethane
67721
-
-
-
-
0.02
(D)
0.02
(D)
Indeno(1,2,3-cd) Pyrene
193395
-
-
-
-
0.00016
(D)
0.00016
(D)
Isophorone
78591
-
-
-
-
27
(D)
110
(D)
Malathion
121755
-
0.1
(b)
-
0.1
(b)
-
-
Methoxychlor
72435
-
0.03
(b)
-
0.03
(b)
-
-
Methyl Bromide
74839
-
-
-
-
300
2,400
Methyl Chloride
74873
-
-
-
-
-
-
Methylene Chloride
75092
-
-
-
-
10
(D)
100
(D)
Mirex
2385855
-
0.001
(b)
-
0.001
(b)
-
-
N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine-quinone (6PPD-quinone)
0.012
(a)
-
-
-
-
-
Napthalene
91203
-
-
-
-
-
-
Nitrobenzene
98953
-
-
-
-
30
100
N-Nitrosodimethylamine
62759
-
-
-
-
0.00065
(D)
0.34
(D)
N-Nitrosodi-n-Propylamine
621647
-
-
-
-
0.0044
(D)
0.058
(D)
N-Nitrosodiphenylamine
86306
-
-
-
-
0.62
(D)
0.69
(D)
Nonylphenol
84852153
28
(a)
6.6
(b)
7
(a)
1.7
(b)
-
-
Parathion
56382
0.065
(a)
0.013
(b)
-
-
-
-
Pentachlorophenol (PCP)
87865
(a,mm)
(b,nn)
13
(a)
6.7
(b)
0.002
(D)
0.002
(D)
Perfluorooctane sulfonic acid (PFOS)
3,000
(a)
(oo)
550
(a)
-
-
-
Perfluorooctanoic acid (PFOA)
49,000
(a)
(pp)
7,000
(a)
-
-
-
Phenanthrene
85018
-
-
-
-
-
-
Phenol
108952
-
-
-
-
9000
70000
Polychlorinated Biphenyls (PCBs)
2
(d)
0.014
(d)
10
(d)
0.03
(d)
0.000007
(F)
0.000007
(F)
Pyrene
129000
-
-
-
-
8
8
Tetrachloroethylene
127184
-
-
-
-
2.4
(D)
2.9
(D)
Toluene
108883
-
-
-
-
72
130
Toxaphene
8001352
0.73
(a)
0.0002
(b)
0.21
(a)
0.0002
(a)
(oo)
550
(a)
-
-
-
Perfluorooctanoic acid (PFOA)
49,000
(a)
(pp)
7,000
(a)
-
-
-
Phenanthrene
85018
-
-
-
-
-
-
Phenol
108952
-
-
-
-
9000
70000
Polychlorinated Biphenyls (PCBs)
2
(d)
0.014
(d)
10
(d)
0.03
(d)
0.000007
(F)
0.000007
(F)
Pyrene
129000
-
-
-
-
8
8
Tetrachloroethylene
127184
-
-
-
-
2.4
(D)
2.9
(D)
Toluene
108883
-
-
-
-
72
130
Toxaphene
8001352
0.73
(a)
0.0002
(b)
0.21
(a)
0.0002
(b)
0.000032
(D)
0.000032
(D)
Tributyltin
0.46
(a)
0.072
(b)
0.42
(a)
0.0074
(b)
-
-
Trichloroethylene
79016
-
-
-
-
0.3
(D)
0.7
(D)
Vinyl Chloride
75014
-
-
-
-
0.02
(D)
0.18
(D)
Footnotes for aquatic life criteria in Table 240:
a.
A 1-hour average concentration not to be exceeded more than once every three years on the average.
b.
A 4-day average concentration not to be exceeded more than once every three years on average.
c.
An instantaneous concentration not to be exceeded at any time.
d.
A 24-hour average not to be exceeded at any time.
e.
Criteria are calculated using the Aluminum Criteria Calculator V.2.0 that is published in EPA's "Final Aquatic Water Quality Criteria for Aluminum 2018" (EPA-822-R-1-001). Default criteria values were calculated for EPA Level II ecoregions and are applicable in the absence of water body or site-specific water quality data. The freshwater default acute criterion in the Western Cordillera ecoregion is 288 µg/L, 630 µg/L is the default acute criterion in the Marine West Coast Forest ecoregion, and 1400 µg/L is the default acute criterion in the Cold Desert ecoregion. The freshwater default chronic criterion in the Western Cordillera ecoregion is 180 µg/L, 302 µg/L is the default chronic criterion in the Marine West Coast Forest ecoregion, and 720 µg/L is the default chronic criterion in the Cold Desert ecoregion. The default criterion is used in the absence of concurrently sampled pH, hardness, and dissolved organic carbon for a site-specific location or water body
reshwater default chronic criterion in the Western Cordillera ecoregion is 180 µg/L, 302 µg/L is the default chronic criterion in the Marine West Coast Forest ecoregion, and 720 µg/L is the default chronic criterion in the Cold Desert ecoregion. The default criterion is used in the absence of concurrently sampled pH, hardness, and dissolved organic carbon for a site-specific location or water body. Criteria calculated using concurrently sampled pH, hardness, and dissolved organic carbon for a specific water body supersede the default criteria. The aluminum criteria are based on aluminum toxicity studies where aluminum was analyzed using total recoverable analytical methods. Washington may utilize total recoverable analytical methods to implement the criteria. For characterizing ambient waters, Washington may also utilize, as scientifically appropriate and as allowable by state and federal regulations, analytical methods that measure the bioavailable fraction of aluminum (e.g., utilizing a less aggressive initial acid digestion, such as to a pH of approximately 4 or lower, that includes the measurement of amorphous aluminum hydroxide yet minimizes the measurement of mineralized forms of aluminum such as aluminum silicates associated with suspended sediment particles or clays). Washington shall use measurements of total recoverable aluminum where required by federal regulations.
f.
These ambient criteria in the table are for the dissolved fraction. The cyanide criteria are based on the weak acid dissociable method. The metals criteria may not be used to calculate total recoverable effluent limits unless the seasonal partitioning of the dissolved to total metals in the ambient water are known. When this information is absent, these metals criteria shall be applied as total recoverable values, determined by back-calculation, using the conversion factors incorporated in the criterion equations
ssociable method. The metals criteria may not be used to calculate total recoverable effluent limits unless the seasonal partitioning of the dissolved to total metals in the ambient water are known. When this information is absent, these metals criteria shall be applied as total recoverable values, determined by back-calculation, using the conversion factors incorporated in the criterion equations. Metals criteria may be adjusted on a site-specific basis when data are made available to the department clearly demonstrating the effective use of the water effects ratio approach established by USEPA, as generally guided by the procedures in USEPA Water Quality Standards Handbook, December 1983, as supplemented or replaced by USEPA or ecology. The adjusted site-specific criteria are not in effect until they have been incorporated into this chapter and approved by EPA. Information which is used to develop effluent limits based on applying metals partitioning studies or the water effects ratio approach shall be identified in the permit fact sheet developed pursuant to WAC 173-220-060 or 173-226-110 , as appropriate, and shall be made available for the public comment period required pursuant to WAC 173-220-050 or 173-226-130 (3), as appropriate. Ecology has developed supplemental guidance for conducting water effect ratio studies.
g.
Marine conversion factors (CF) which were used for calculating dissolved metals concentrations are given below. Conversion factors are applicable to both acute and chronic criteria for all metals except mercury. The CF for mercury was applied to the acute criterion only and is not applicable to the chronic criterion. Conversion factors are already incorporated into the criteria in the table. Dissolved criterion = criterion x CF
Metal
CF
Arsenic
1.000
Cadmium
0.994
Chromium (VI)
0.993
Copper
0.83
Lead
0.951
Mercury
0.85
Nickel
0.990
Selenium
0.998
Silver
0.85
Zinc
0.946
h.
Acute criterion = (CF)(e (0.9789[ln(hardness)] - 4.189) ). Conversion factor (CF) is hardness dependent
applicable to the chronic criterion. Conversion factors are already incorporated into the criteria in the table. Dissolved criterion = criterion x CF
Metal
CF
Arsenic
1.000
Cadmium
0.994
Chromium (VI)
0.993
Copper
0.83
Lead
0.951
Mercury
0.85
Nickel
0.990
Selenium
0.998
Silver
0.85
Zinc
0.946
h.
Acute criterion = (CF)(e (0.9789[ln(hardness)] - 4.189) ). Conversion factor (CF) is hardness dependent. CF is calculated for other hardnesses as follows: CF = 1.136672 - [(ln hardness)(0.041838)].
i.
Chronic criterion = (CF)(e (0.7977[ln(hardness)] - 4.446) ). Conversion factor (CF) is hardness dependent. CF is calculated for other hardnesses as follows: CF = 1.101672 - [(ln hardness)(0.041838)].
j.
Where methods to measure trivalent chromium are unavailable, these criteria are to be represented by total-recoverable chromium.
k.
Acute criterion = (0.316)(e (0.8190[ln(hardness)] + 3.533) )
l.
Chronic criterion = (0.860)(e (0.8190[ln(hardness)] + 0.4921) )
m.
The conversion factor used to calculate the dissolved metal concentration is 0.982.
n.
The conversion factor used to calculate the dissolved metal concentration is 0.962.
o.
The acute criterion is represented by the higher criteria value of the two equations: 1) Acute criterion = e (0.700*ln(DOC) + 0.579*ln(hardness) + 0.778*pH – 6.738) and 2) Acute criterion = e (0.855*ln(DOC) + 0.221*ln(hardness) + 0.216*pH – 1.183) . Default criteria values were calculated for EPA Level II ecoregions and are applicable in the absence of water body or site-specific water quality data. The freshwater default acute criterion in the Western Cordillera ecoregion is 1.4 µg/L, 2.4 µg/L is the default acute criterion in the Marine West Coast Forest ecoregion, and 4.8 µg/L is the default acute criterion in the Cold Desert ecoregion. The default criterion is used in the absence of concurrently sampled pH, hardness, and dissolved organic carbon for a site-specific location or water body
The freshwater default acute criterion in the Western Cordillera ecoregion is 1.4 µg/L, 2.4 µg/L is the default acute criterion in the Marine West Coast Forest ecoregion, and 4.8 µg/L is the default acute criterion in the Cold Desert ecoregion. The default criterion is used in the absence of concurrently sampled pH, hardness, and dissolved organic carbon for a site-specific location or water body. Criteria calculated using concurrently sampled pH, hardness, and dissolved organic carbon for a specific water body supersede the default criteria.
p.
Chronic criterion = e (0.855*ln(DOC) + 0.221*ln(hardness) + 0.216*pH – 1.402) . Default criteria values were calculated for EPA Level II ecoregions and are applicable in the absence of water body or site-specific water quality data. The freshwater default chronic criterion in the Western Cordillera ecoregion is 1.2 µg/L, 1.8 µg/L is the default chronic criterion in the Marine West Coast Forest ecoregion, and 3.2 µg/L is the default chronic criterion in the Cold Desert ecoregion. 1.6 µg/L is applicable in western Washington and 1.8 µg/L is the applicable default chronic criterion in eastern Washington. The default criterion is used in the absence of concurrently sampled pH, hardness, and dissolved organic carbon for a site-specific location or water body. Criteria calculated using concurrently sampled pH, hardness, and dissolved organic carbon for a specific water body supersede the default criteria.
q.
Acute criterion = (CF)(e (1.273[ln(hardness)] - 1.460) ). Conversion factor (CF) is hardness dependent. CF is calculated for other hardnesses as follows:
CF = 1.46203 - [(ln hardness)(0.145712)].
r.
Chronic criterion = (CF)(e (1.273[ln(hardness)] - 4.705) ). Conversion factor (CF) is hardness dependent. CF is calculated for other hardnesses as follows: CF = 1.46203 - [(ln hardness)(0.145712)].
s.
The conversion factor used to calculate the dissolved metal concentration is 0.85.
t.
These criteria are based on the total-recoverable fraction of the metal.
u
.46203 - [(ln hardness)(0.145712)].
r.
Chronic criterion = (CF)(e (1.273[ln(hardness)] - 4.705) ). Conversion factor (CF) is hardness dependent. CF is calculated for other hardnesses as follows: CF = 1.46203 - [(ln hardness)(0.145712)].
s.
The conversion factor used to calculate the dissolved metal concentration is 0.85.
t.
These criteria are based on the total-recoverable fraction of the metal.
u.
If the four-day average chronic concentration is exceeded more than once in a three-year period, the edible portion of the consumed species should be analyzed. Said edible tissue concentrations shall not be allowed to exceed 1.0 mg/kg of methylmercury.
v.
Acute criterion = (0.998)(e (0.8460[ln(hardness)] + 0.1667) )
w.
Chronic criterion = (0.997)(e (0.8460[ln(hardness)] - 1.466) )
x.
There is no freshwater acute criterion for aquatic life for selenium. The freshwater chronic criterion is expected to adequately protect against acute effects.
y.
Freshwater chronic selenium criteria:
15.1 mg/kg dry weight (egg-ovary tissue) 1
8.5 mg/kg dry weight (whole-body tissue) 2
11.3 mg/kg dry weight (muscle tissue) 2
1.5 µg/L (water lentic) 3
3.1 µg/L (water lotic) 3
WQC int = WQC – C bkgrnd (1 – f int ) / f int (water lentic or lotic) 3,4
1 Egg-ovary supersedes any whole-body, muscle, or water column element when fish egg-ovary concentrations are measured, except as noted in footnote 4. Tissue criterion is not to be exceeded.
2 Fish whole-body or muscle tissue supersedes the water column element when both fish tissue and water concentrations are measured, except as noted in footnote 4. Tissue criterion is not to be exceeded.
3 Water column values are based on dissolved total selenium in water and are derived from fish tissue values via bioaccumulation modeling. When selenium inputs are increasing, water column values are the applicable criterion element in the absence of steady-state condition fish tissue data. Water column criteria are based on a 30-day average concentrations, except for WQC int (see footnote 4)
ded.
3 Water column values are based on dissolved total selenium in water and are derived from fish tissue values via bioaccumulation modeling. When selenium inputs are increasing, water column values are the applicable criterion element in the absence of steady-state condition fish tissue data. Water column criteria are based on a 30-day average concentrations, except for WQC int (see footnote 4). Water column criteria are not to be exceeded more than once every three years on average.
4 Where WQC int is the intermittent exposure concentration in µg/L; WQC is the applicable water column element, for either lentic or lotic waters; C bkgrnd is the average daily background concentration occurring during the remaining time, integrated over 30 days; f int is the fraction of any 30-day period during which elevated selenium concentrations occur, with f int assigned a value ≥ 0.033 (corresponding to one day). Intermittent exposure criteria averaging period is the number of days per month with an elevated concentration.
z.
Acute criterion = (0.85)(e (1.72[ln(hardness)] – 8.590) )
aa.
Chronic criterion = (0.85)(e (1.72[ln(hardness)] – 9.511) )
bb.
Acute criterion = (0.978)(e (0.8473[ln(hardness)] + 0.3313) )
cc.
Chronic criterion = (0.986)(e (0.8473[ln(hardness)] – 0.6900) )
dd.
Aldrin is metabolically converted to Dieldrin. Therefore, the sum of the Aldrin and Dieldrin concentrations are compared with the Dieldrin criteria.
ee.
This value was derived from data for endosulfan. Where concentrations for both alpha-endosulfan and beta-endosulfan are available, the sum of alpha-endosulfan and beta-endosulfan concentrations shall be compared to the criteria.
ff.
Shall not exceed the numerical value in total ammonia nitrogen (mg N/L) given by:
For salmonids present: 0.275 + 39.0 1 + 10 7.204- pH 1 + 10 pH -7.204 For salmonids absent: 0.411 + 58.4 1 + 10 7.204- pH 1 + 10 pH -7.204
For salmonids present:
0.275
+
39.0
1 + 10 7.204- pH
1 + 10 pH -7.204
For salmonids absent:
0.411
+
58.4
1 + 10 7.204- pH
1 + 10 pH -7.204
gg
hall be compared to the criteria.
ff.
Shall not exceed the numerical value in total ammonia nitrogen (mg N/L) given by:
For salmonids present: 0.275 + 39.0 1 + 10 7.204- pH 1 + 10 pH -7.204 For salmonids absent: 0.411 + 58.4 1 + 10 7.204- pH 1 + 10 pH -7.204
For salmonids present:
0.275
+
39.0
1 + 10 7.204- pH
1 + 10 pH -7.204
For salmonids absent:
0.411
+
58.4
1 + 10 7.204- pH
1 + 10 pH -7.204
gg.
Shall not exceed the numerical concentration calculated as follows:
Unionized ammonia concentration for waters where salmonid habitat is an existing or designated use:
0.80 ÷ (FT)(FPH)(RATIO) where: RATIO = 13.5; 7.7 ≤ pH ≤ 9 RATIO = (20.25 x 10 (7.7-pH) ) ÷ (1 + 10 (7.4-pH) ); 6.5 ≤ pH ≤ 7.7 FT = 1.4; 15 ≤ T ≤ 30 FT = 10 [0.03(20-T)] ; 0 ≤ T ≤ 15 FPH = 1; 8 ≤ pH ≤ 9 FPH = (1 + 10 (7.4-pH) ) ÷ 1.25; 6.5 ≤ pH ≤ 8.0
0.80 ÷ (FT)(FPH)(RATIO)
where:
RATIO
=
13.5; 7.7 ≤ pH ≤ 9
RATIO
=
(20.25 x 10 (7.7-pH) ) ÷ (1 + 10 (7.4-pH) ); 6.5 ≤ pH ≤ 7.7
FT
=
1.4; 15 ≤ T ≤ 30
FT
=
10 [0.03(20-T)] ; 0 ≤ T ≤ 15
FPH
=
1; 8 ≤ pH ≤ 9
FPH
=
(1 + 10 (7.4-pH) ) ÷ 1.25; 6.5 ≤ pH ≤ 8.0
Total ammonia concentrations for waters where salmonid habitat is not an existing or designated use and other fish early life stages are absent:
where: A = the greater of either T (temperature in degrees Celsius) or 7.
where: A
=
the greater of either T (temperature in degrees Celsius) or 7.
Applied as a 30-day average concentration of total ammonia nitrogen (in mg N/L) not to be exceeded more than once every three years on average. The highest four-day average within the 30-day period should not exceed 2.5 times the chronic criterion.
Total ammonia concentration for waters where salmonid habitat is not an existing or designated use and other fish early life stages are present:
where: B = the lower of either 2.85, or 1.45 x 10 0.028 x (25-T) . T = temperature in degrees Celsius.
where: B
=
the lower of either 2.85, or 1.45 x 10 0.028 x (25-T) . T = temperature in degrees Celsius
should not exceed 2.5 times the chronic criterion.
Total ammonia concentration for waters where salmonid habitat is not an existing or designated use and other fish early life stages are present:
where: B = the lower of either 2.85, or 1.45 x 10 0.028 x (25-T) . T = temperature in degrees Celsius.
where: B
=
the lower of either 2.85, or 1.45 x 10 0.028 x (25-T) . T = temperature in degrees Celsius.
Applied as a 30-day average concentration of total ammonia nitrogen (in mg N/L) not to be exceeded more than once every three years on the average. The highest four-day average within the 30-day period should not exceed 2.5 times the chronic criterion.
hh.
Measured in milligrams per liter rather than micrograms per liter.
ii.
The listed freshwater criteria are based on un-ionized or total ammonia concentrations, while those for marine water are based on un-ionized ammonia concentrations. Tables for the conversion of total ammonia to un-ionized ammonia for freshwater can be found in the USEPA's Quality Criteria for Water, 1986. Criteria concentrations based on total ammonia for marine water can be found in USEPA Ambient Water Quality Criteria for Ammonia (Saltwater)-1989, EPA440/ 5-88-004 , April 1989.
jj.
Criterion based on dissolved chloride in association with sodium. This criterion probably will not be adequately protective when the chloride is associated with potassium, calcium, or magnesium, rather than sodium.
kk.
The criteria for cyanide is based on the weak acid dissociable method in the 19th Ed. Standard Methods for the Examination of Water and Wastewater, 4500-CN I, and as revised (see footnote f, above).
ll.
The cyanide criteria are: 2.8 µg/L chronic and 9.1 µg/L acute and are applicable only to waters which are east of a line from Point Roberts to Lawrence Point, to Green Point to Deception Pass; and south from Deception Pass and of a line from Partridge Point to Point Wilson. The chronic criterion applicable to the remainder of the marine waters is l µg/L.
mm.
Acute criterion = e [1.005(pH) – 5.450]
nn
cyanide criteria are: 2.8 µg/L chronic and 9.1 µg/L acute and are applicable only to waters which are east of a line from Point Roberts to Lawrence Point, to Green Point to Deception Pass; and south from Deception Pass and of a line from Partridge Point to Point Wilson. The chronic criterion applicable to the remainder of the marine waters is l µg/L.
mm.
Acute criterion = e [1.005(pH) – 5.450]
nn.
Chronic criterion = e [1.005(pH) – 6.155]
oo.
Freshwater chronic PFOS criteria:
8.4 µg/L (water) 1,2
0.937 mg/kg ww (invertebrate whole-body) 1,3,4
6.75 mg/kg ww (fish whole-body) 1,3,4
2.91 mg/kg ww (fish muscle) 1,3,4
1 All water column and tissue criteria are intended to be independently applicable for compliance determinations and no one criterion takes primacy.
2 Water column criteria are based on a four-day average concentration not to be exceeded more than once every three years on average.
3 Tissue criteria derived from the chronic water column concentration with the use of bioaccumulation factors and are expressed as wet weight (ww) concentrations.
4 Tissue data is an instantaneous point measurement that reflect integrative accumulation of PFOS over time and space. Criteria are not to be exceeded more than once every 10 years on average.
pp.
Freshwater chronic PFOA criteria:
94 µg/L (water) 1,2
1.11 mg/kg ww (invertebrate whole-body) 1,3,4
6.10 mg/kg ww (fish whole-body) 1,3,4
0.125 mg/kg ww (fish muscle) 1,3,4
1 All water column and tissue criteria are intended to be independently applicable for compliance determinations and no one criterion takes primacy.
2 Water column criteria are based on a four-day average concentration not to be exceeded more than once every three years on average.
3 Tissue criteria derived from the chronic water column concentration with the use of bioaccumulation factors and are expressed as wet weight (ww) concentrations.
4 Tissue data is an instantaneous point measurement that reflect integrative accumulation of PFOA over time and space
criteria are based on a four-day average concentration not to be exceeded more than once every three years on average.
3 Tissue criteria derived from the chronic water column concentration with the use of bioaccumulation factors and are expressed as wet weight (ww) concentrations.
4 Tissue data is an instantaneous point measurement that reflect integrative accumulation of PFOA over time and space. Criteria are not to be exceeded more than once every 10 years on average.
Footnotes for human health criteria in Table 240:
A.
This criterion refers to the inorganic form of arsenic only. These criteria were promulgated for Washington in the National Toxics Rule at 40 C.F.R. 131.36 and are moved to 40 C.F.R. 131.45 to have one comprehensive human health criteria rule for Washington.
B.
This criterion is based on a regulatory level developed under the Safe Drinking Water Act.
C.
This criterion is expressed as the fish tissue concentration of methylmercury (mg methylmercury/kg fish). See Water Quality Criterion for the Protection of Human Health: Methylmercury (EPA-823-R-01-001, January 3, 2001) for how this value is calculated using the criterion equation in EPA's 2000 Human Health Methodology rearranged to solve for a protective concentration in fish tissue rather than in water.
D.
This criterion was calculated based on an additional lifetime cancer risk of one-in-one-million (1 × 10 -6 risk level).
E.
This recommended water quality criterion is expressed as total cyanide, even though the integrated risk information system RfD used to derive the criterion is based on free cyanide. The multiple forms of cyanide that are present in ambient water have significant differences in toxicity due to their differing abilities to liberate the CN-moiety. Some complex cyanides require even more extreme conditions than refluxing with sulfuric acid to liberate the CN-moiety. Thus, these complex cyanides are expected to have little or no "bioavailability" to humans
s based on free cyanide. The multiple forms of cyanide that are present in ambient water have significant differences in toxicity due to their differing abilities to liberate the CN-moiety. Some complex cyanides require even more extreme conditions than refluxing with sulfuric acid to liberate the CN-moiety. Thus, these complex cyanides are expected to have little or no "bioavailability" to humans. If a substantial fraction of the cyanide present in a water body is present in a complexed form (e.g., Fe4[Fe(CN)6]3), this criterion may be overly conservative.
F.
This criterion applies to total PCBs, (e.g., the sum of all congener or all isomer or homolog or Aroclor analyses).

## Nearby sections

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_173_201A_240. Check the current official text before relying on it. Not legal advice.