Statutes, codes, and regulations
Arizona Administrative Code
Title 18 - ENVIRONMENTAL QUALITYChapter 7 - DEPARTMENT OF ENVIRONMENTAL QUALITY - REMEDIAL ACTION
Article 2 - SOIL REMEDIATION STANDARDS
Appendix A - Soil Remediation Levels (SRLs)

Ariz. Admin. Code § tit. 18, ch. 7, art. 2, app A

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Current through Register Vol. 30, No. 50, December 13, 2024
Appendix A - Soil Remediation Levels (SRLs)

CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Acephate 30560-19-1 ca, nc 63 630 240 2,000
Acetaldehyde 75-07-0 ca, nc 11 110 50 160
Acetochlor 34256-82-1 nc 1,200 12,000
Acetone 67-64-1 nc 14,000 54,000
Acetone cyanohydrin 75-86-5 nc 49 490
Acetonitrile 75-05-8 nc 420 1,800
Acrolein 107-02-8 nc 0.10 0.34
Acrylamide 79-06-1 ca, nc 0.12 1.2 3.8
Acrylic acid 79-10-7 nc 29,000 270,000
Acrylonitrile 107-13-1 ca, nc 0.21 2.1 4.9
Alachlor 15972-60-8 ca, nc 6.8 68 210
Alar 1596-84-5 nc 9,200 92,000
Aldicarb 116-06-3 nc 61 620
Aldicarb sulfone 1646-88-4 nc 61 620
Aldrin 309-00-2 ca, nc 0.032 0.32 1.0
Ally 74223-64-6 nc 15,000 150,000
Allyl alcohol 107-18-6 nc 310 3,100
Allyl chloride 107-05-1 nc 18 180
Aluminum 7429-90-5 nc 76,000 920,000
Aluminum phosphide 20859-73-8 nc 31 410
Amdro 67485-29-4 nc 18 180
Ametryn 834-12-8 nc 550 5,500
Aminodinitrotoluene 1321-12-6 nc 12 120
m-Aminophenol 591-27-5 nc 4,300 43,000
4-Aminopyridine 504-24-5 nc 1.2 12
Amitraz 33089-61-1 nc 150 1,500
Ammonium sulfamate 7773-06-0 nc 12,000 120,000
Aniline 62-53-3 ca, nc 96 960 430 3,000
Antimony and compounds 7440-36-0 nc 31 410
Apollo 74115-24-5 nc 790 8,000
Aramite 140-57-8 ca, nc 22 220 690
Arsenic1 7440-38-2 ca, nc 10 10 10 10
Assure 76578-12-6 nc 550 5,500
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Asulam 3337-71-1 nc 3,100 31,000
Atrazine 1912-24-9 ca, nc 2.5 25 78
Avermectin B1 71751-41-2 nc 24 250
Azobenzene 103-33-3 ca 5.0 50 160
Barium and compounds 7440-39-3 nc 15,000 170,000
Baygon 114-26-1 nc 240 2,500
Bayleton 43121-43-3 nc 1,800 18,000
Baythroid 68359-37-5 nc 1,500 15,000
Benefin 1861-40-1 nc 18,000 180,000
Benomyl 17804-35-2 nc 3,100 31,000
Bentazon 25057-89-0 nc 1,800 18,000
Benzaldehyde 100-52-7 nc 6,100 62,000
Benzene 71-43-2 ca, nc 0.65 NA 1.4
Benzidine 92-87-5 ca, nc 0.0024 NA 0.0075
Benzoic acid 65-85-0 nc 240,000 1,000,000 **
Benzotrichloride 98-07-7 ca 0.042 0.42 1.3
Benzyl alcohol 100-51-6 nc 18,000 180,000
Benzyl chloride 100-44-7 ca, nc 0.92 9.2 22
Beryllium and compounds 7440-41-7 ca, nc 150 1,900
Bidrin 141-66-2 nc 6.1 62
Biphenthrin (Talstar) 82657-04-3 nc 920 9,200
1,1-Biphenyl 92-52-4 nc 350 * 350 *
Bis(2-chloroethyl)ether 111-44-4 ca 0.23 2.3 5.8
Bis(2-chloroisopropyl)ether 39638-32-9 nc 790 * 790 *
Bis(chloromethyl)ether 542-88-1 ca 0.00020 NA 0.00043
Bis(2-chloro-1-methylethyl)ether 108-60-1 ca, nc 3.0 30 74
Bis(2-ethylhexyl)phthalate (DEHP) 117-81-7 ca, nc 39 390 1200
Bisphenol A 80-05-7 nc 3,100 31,000
Boron 7440-42-8 nc 16,000 200,000
Bromate 15541-45-4 ca, nc 0.78 7.8 25
Bromobenzene 108-86-1 nc 28 92
Bromodichloromethane 75-27-4 ca, nc 0.83 8.3 18
Bromoform (tribromomethane) 75-25-2 ca, nc 69 690 2,200
Bromomethane (methyl bromide) 74-83-9 nc 3.9 13
Bromophos 2104-96-3 nc 310 3,100
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Bromoxynil 1689-84-5 nc 1,200 12,000
Bromoxynil octanoate 1689-99-2 nc 1,200 12,000
1,3-Butadiene 106-99-0 ca, nc 0.058 0.58 1.2
1-Butanol 71-36-3 nc 6,100 61,000
Butylate 2008-41-5 nc 3,100 31,000
n-Butylbenzene 104-51-8 nc 240 * 240 *
sec-Butylbenzene 135-98-8 nc 220 * 220 *
tert-Butylbenzene 98-06-6 nc 390 * 390 *
Butyl benzyl phthalate 85-68-7 nc 12,000 120,000
Butylphthalyl butylglycolate 85-70-1 nc 61,000 620,000
Cadmium and compounds 7440-43-9 ca, nc 39 510
Caprolactam 105-60-2 nc 31,000 310,000
Captafol 2425-06-1 ca, nc 64 640 120 1,200
Captan 133-06-2 ca, nc 160 1,600 4,900
Carbaryl 63-25-2 nc 6,100 62,000
Carbazole 86-74-8 ca 27 270 860
Carbofuran 1563-66-2 nc 310 3,100
Carbon disulfide 75-15-0 nc 360 720 *
Carbon tetrachloride 56-23-5 ca, nc 0.25 2.5 2.2 5.5
Carbosulfan 55285-14-8 nc 610 6,200
Carboxin 5234-68-4 nc 6,100 62,000
Chloral hydrate 302-17-0 nc 6,100 62,000
Chloramben 133-90-4 nc 920 9,200
Chloranil 118-75-2 ca 1.4 14 43
Chlordane 12789-03-6 ca, nc 1.9 19 65
Chlorimuron-ethyl 90982-32-4 nc 1,200 12,000
Chloroacetic acid 79-11-8 nc 120 1,200
2-Chloroacetophenone 532-27-4 nc 0.033 0.11
4-Chloroaniline 106-47-8 nc 240 2,500
Chlorobenzene 108-90-7 nc 150 530
Chlorobenzilate 510-15-6 ca, nc 2.0 20 64
p-Chlorobenzoic acid 74-11-3 nc 12,000 120,000
4-Chlorobenzotrifluoride 98-56-6 nc 1,200 12,000
2-Chloro-1,3-butadiene 126-99-8 nc 3.6 12
1-Chlorobutane 109-69-3 nc 480 * 480 *
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
1-Chloro-1,1-difluoroethane 75-68-3 nc 340 * 340 *
Chlorodifluoromethane 75-45-6 nc 340 * 340 *
Chloroethane 75-00-3 ca, nc 3.0 30 65
Chloroform 67-66-3 ca, nc 0.94 9.4 20
Chloromethane 74-87-3 nc 48 160
4-Chloro-2-methylaniline 95-69-2 ca 0.94 9.4 30
4-Chloro-2-methylaniline hydrochloride 3165-93-3 ca 1.2 12 37
beta-Chloronaphthalene 91-58-7 nc 110 * 110 *
o-Chloronitrobenzene 88-73-3 ca, nc 1.4 4.5
p-Chloronitrobenzene 100-00-5 ca, nc 10 37
2-Chlorophenol 95-57-8 nc 63 240
2-Chloropropane 75-29-6 nc 170 590
Chlorothalonil 1897-45-6 ca, nc 50 500 1600
o-Chlorotoluene 95-49-8 nc 160 510 *
Chlorpropham 101-21-3 nc 12,000 120,000
Chlorpyrifos 2921-88-2 nc 180 1,800
Chlorpyrifos-methyl 5598-13-0 nc 610 6,200
Chlorsulfuron 64902-72-3 nc 3,100 31,000
Chlorthiophos 60238-56-4 nc 49 490
Chromium III 16065-83-1 nc 120,000 1,000,000 **
Chromium VI 18540-29-9 ca, nc 30 NA 65
Cobalt 7440-48-4 ca, nc 900 9,000 1,400 13,000
Copper and compounds 7440-50-8 nc 3,100 41,000
Crotonaldehyde 123-73-9 ca 0.0053 0.053 0.11
Cumene (isopropylbenzene) 98-82-8 nc 92 * 92 *
Cyanazine 21725-46-2 ca, nc 0.65 6.5 21
Cyanide (free)2 57-12-5 nc 1,200 12,000
Cyanide (hydrogen)3 74-90-8 nc 11 35
Cyanogen 460-19-5 nc 130 430
Cyanogen bromide 506-68-3 nc 290 970
Cyanogen chloride 506-77-4 nc 160 540
Cyclohexane 110-82-7 nc 140 * 140 *
Cyclohexanone 108-94-1 nc 310,000 1,000,000 **
Cyclohexylamine 108-91-8 nc 12,000 120,000
Cyhalothrin/Karate 68085-85-8 nc 310 3,100
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Cypermethrin 52315-07-8 nc 610 6,200
Cyromazine 66215-27-8 nc 460 4,600
Dacthal 1861-32-1 nc 610 6,200
Dalapon 75-99-0 nc 1,800 18,000
Danitol 39515-41-8 nc 1,500 15,000
DDD 72-54-8 ca 2.8 28 100
DDE 72-55-9 ca 2.0 20 70
DDT 50-29-3 ca, nc 2.0 20 70
Decabromodiphenyl ether 1163-19-5 nc 610 6,200
Demeton 8065-48-3 nc 2.4 25
Diallate 2303-16-4 ca 9.0 90 280
Diazinon 333-41-5 nc 55 550
Dibenzofuran 132-64-9 nc 140 * 140 *
1,4-Dibromobenzene 106-37-6 nc 610 6,200
Dibromochloromethane 124-48-1 ca, nc 1.1 11 26
1,2-Dibromo-3-chloropropane 96-12-8 ca, nc 0.53 5.3 1.5 6.5
1,2-Dibromoethane 106-93-4 ca, nc 0.029 0.29 0.63
Dibutyl phthalate 84-74-2 nc 6,100 62,000
Dicamba 1918-00-9 nc 1,800 18,000
1,2-Dichlorobenzene 95-50-1 nc 600 * 600 *
1,3-Dichlorobenzene 541-73-1 nc 530 600 *
1,4-Dichlorobenzene 106-46-7 ca, nc 3.5 35 79
3,3-Dichlorobenzidine 91-94-1 ca 1.2 12 38
4,4'-Dichlorobenzophenone 90-98-2 nc 1,800 18,000
1,4-Dichloro-2-butene 764-41-0 ca 0.0080 0.080 0.18
Dichlorodifluoromethane 75-71-8 nc 94 310
1,1-Dichloroethane 75-34-3 nc 510 1,700 *
1,2-Dichloroethane (DCA) 107-06-2 ca, nc 0.28 2.8 6.0
1,1-Dichloroethylene (DCE) 75-35-4 nc 120 410
1,2-Dichloroethylene (cis) 156-59-2 nc 43 150
1,2-Dichloroethylene (trans) 156-60-5 nc 69 230
2,4-Dichlorophenol 120-83-2 nc 180 1,800
4-(2,4-Dichlorophenoxy)butyric acid 94-82-6 nc 490 4,900
2,4-Dichlorophenoxyacetic Acid (2,4-D) 94-75-7 nc 690 7,700
1,2-Dichloropropane 78-87-5 ca, nc 0.34 3.4 7.4
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
1,3-Dichloropropane 142-28-9 nc 100 360
1,3-Dichloropropene 542-75-6 ca, nc 0.79 7.9 18
2,3-Dichloropropanol 616-23-9 nc 180 1,800
Dichlorvos 62-73-7 ca, nc 1.9 19 59
Dicofol 115-32-2 ca 1.2 12 39
Dicyclopentadiene 77-73-6 nc 0.54 1.8
Dieldrin 60-57-1 ca, nc 0.034 0.34 1.1
Diethylene glycol, monobutyl ether 112-34-5 nc 610 6,200
Diethylene glycol, monomethyl ether 111-90-0 nc 3,700 37,000
Diethylformamide 617-84-5 nc 24 250
Di(2-ethylhexyl)adipate 103-23-1 ca, nc 460 4,600 14,000
Diethyl phthalate 84-66-2 nc 49,000 490,000
Diethylstilbestrol 56-53-1 ca 0.00012 NA 0.0037
Difenzoquat (Avenge) 43222-48-6 nc 4,900 49,000
Diflubenzuron 35367-38-5 nc 1,200 12,000
Diisononyl phthalate 28553-12-0 nc 1,200 12,000
Diisopropyl methylphosphonate 1445-75-6 nc 4,900 49,000
Dimethipin 55290-64-7 nc 1,200 12,000
Dimethoate 60-51-5 nc 12 120
3,3'-Dimethoxybenzidine 119-90-4 ca 39 390 1,200
Dimethylamine 124-40-3 nc 0.067 0.25
N-N-Dimethylaniline 121-69-7 nc 120 1,200
2,4-Dimethylaniline 95-68-1 ca 0.73 7.3 23
2,4-Dimethylaniline hydrochloride 21436-96-4 ca 0.94 9.4 30
3,3'-Dimethylbenzidine 119-93-7 ca 0.24 2.4 7.5
N,N-Dimethylformamide 68-12-2 nc 6,100 62,000
Dimethylphenethylamine 122-09-8 nc 61 620
2,4-Dimethylphenol 105-67-9 nc 1,200 12,000
2,6-Dimethylphenol 576-26-1 nc 37 370
3,4-Dimethylphenol 95-65-8 nc 61 620
Dimethyl phthalate 131-11-3 nc 610,000 1,000,000 **
Dimethyl terephthalate 120-61-6 nc 6,100 62,000
4,6-Dinitro-o-cyclohexyl phenol 131-89-5 nc 120 1,200
1,2-Dinitrobenzene 528-29-0 nc 6.1 62
1,3-Dinitrobenzene 99-65-0 nc 6.1 62
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
1,4-Dinitrobenzene 100-25-4 nc 6.1 62
2,4-Dinitrophenol 51-28-5 nc 120 1,200
Dinitrotoluene mixture 25321-14-6 ca 0.81 8.1 25
2,4-Dinitrotoluene 121-14-2 nc 120 1,200
2,6-Dinitrotoluene 606-20-2 nc 61 620
Dinoseb 88-85-7 nc 61 620
di-n-Octyl phthalate 117-84-0 nc 2,400 25,000
1,4-Dioxane 123-91-1 ca 50 500 1,600
Dioxin (2,3,7,8-TCDD) 1746-01-6 ca 0.0000045 0.000045 0.00016
Diphenamid 957-51-7 nc 1,800 18,000
Diphenylamine 122-39-4 nc 1,500 15,000
N,N-Diphenyl-1,4 benzenediamine (DPPD) 74-31-7 nc 18 180
1,2-Diphenylhydrazine 122-66-7 ca 0.68 6.8 22
Diphenyl sulfone 127-63-9 nc 180 1,800
Diquat 85-00-7 nc 130 1,400
Direct black 38 1937-37-7 ca 0.064 NA 0.20
Direct blue 6 2602-46-2 ca 0.068 NA 0.21
Direct brown 95 16071-86-6 ca 0.059 NA 0.19
Disulfoton 298-04-4 nc 2.4 25
1,4-Dithiane 505-29-3 nc 610 6,200
Diuron 330-54-1 nc 120 1,200
Dodine 2439-10-3 nc 240 2,500
Dysprosium 7429-91-6 nc 7,800 102,000
Endosulfan 115-29-7 nc 370 3,700
Endothall 145-73-3 nc 1,200 12,000
Endrin 72-20-8 nc 18 180
Epichlorohydrin 106-89-8 ca, nc 7.6 26
1,2-Epoxybutane 106-88-7 nc 350 3,500
EPTC (S-Ethyl dipropylthiocarbamate) 759-94-4 nc 1,500 15,000
Ethephon (2-chloroethyl phosphonic acid) 16672-87-0 nc 310 3,100
Ethion 563-12-2 nc 31 310
2-Ethoxyethanol 110-80-5 nc 24,000 250,000
2-Ethoxyethanol acetate 111-15-9 nc 18,000 180,000
Ethyl acetate 141-78-6 nc 19,000 37,000 *
Ethyl acrylate 140-88-5 ca 0.21 2.1 4.5
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Ethylbenzene 100-41-4 nc 400 * 400 *
Ethyl chloride 75-00-3 ca, nc 3.0 30 65
Ethylene cyanohydrin 109-78-4 nc 18,000 180,000
Ethylene diamine 107-15-3 nc 5,500 55,000
Ethylene glycol 107-21-1 nc 120,000 1,000,000 **
Ethylene glycol, monobutyl ether 111-76-2 nc 31,000 310,000
Ethylene oxide 75-21-8 ca 0.14 1.4 3.4
Ethylene thiourea (ETU) 96-45-7 ca, nc 4.9 49
Ethyl ether 60-29-7 nc 1,800 * 1,800 *
Ethyl methacrylate 97-63-2 nc 140 * 140 *
Ethyl p-nitrophenyl phenylphosphorothioate 2104-64-5 nc 0.61 6.2
Ethylphthalyl ethyl glycolate 84-72-0 nc 180,000 1,000,000 **
Express 101200-48-0 nc 490 4,900
Fenamiphos 22224-92-6 nc 15 150
Fluometuron 2164-17-2 nc 790 8,000
Fluoride 16984-48-8 nc 3,700 37,000
Fluoridone 59756-60-4 nc 4,900 49,000
Flurprimidol 56425-91-3 nc 1,200 12,000
Flutolanil 66332-96-5 nc 3,700 37,000
Fluvalinate 69409-94-5 nc 610 6,200
Folpet 133-07-3 ca, nc 160 1,600 4,900
Fomesafen 72178-02-0 ca 2.9 29 91
Fonofos 944-22-9 nc 120 1,200
Formaldehyde 50-00-0 ca, nc 9,200 92,000
Formic Acid 64-18-6 nc 110,000 1,000,000 **
Fosetyl-al 39148-24-8 nc 180,000 1,000,000 **
Furan 110-00-9 nc 2.5 8.5
Furazolidone 67-45-8 ca 0.14 1.4 4.5
Furfural 98-01-1 nc 180 1,800
Furium 531-82-8 ca 0.011 0.11 0.34
Furmecyclox 60568-05-0 ca 18 180 570
Glufosinate-ammonium 77182-82-2 nc 24 250
Glycidaldehyde 765-34-4 nc 24 250
Glyphosate 1071-83-6 nc 6,100 62,000
Haloxyfop-methyl 69806-40-2 nc 3.1 31
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Harmony 79277-27-3 nc 790 8,003
Heptachlor 76-44-8 ca, nc 0.12 1.2 3.8
Heptachlor epoxide 1024-57-3 ca, nc 0.060 0.60 1.9
Hexabromobenzene 87-82-1 nc 120 1,200
Hexachlorobenzene 118-74-1 ca, nc 0.34 3.4 11
Hexachlorobutadiene 87-68-3 ca, nc 7.0 70 18 180
HCH (alpha) 319-84-6 ca, nc 0.10 1.0 3.6
HCH (beta) 319-85-7 ca, nc 0.36 3.6 13
HCH (gamma) Lindane 58-89-9 ca, nc 0.50 5.0 17
HCH-technical 608-73-1 ca 0.36 3.6 13
Hexachlorocyclopentadiene 77-47-4 nc 370 3,700
Hexachloroethane 67-72-1 ca, nc 39 390 61 620
Hexachlorophene 70-30-4 nc 18 180
Hexahydro-1,3,5-trinitro-1,3,5-triazine 121-82-4 ca, nc 5.0 50 160
1,6-Hexamethylene diisocyanate 822-06-0 nc 0.17 1.8
n-Hexane 110-54-3 nc 110 * 110 *
Hexazinone 51235-04-2 nc 2,020 20,000
Hydrazine, hydrazine sulfate 302-01-2 ca 0.18 1.8 5.7
Hydrazine, monomethyl 60-34-4 ca 0.18 1.8 5.7
Hydrazine, dimethyl 57-14-7 ca 0.18 1.8 5.7
p-Hydroquinone 123-31-9 ca, nc 9.8 98 310
Imazalil 35554-44-0 nc 790 8,000
Imazaquin 81335-37-7 nc 15,000 150,000
Iprodione 36734-19-7 nc 2,400 25,000
Isobutanol 78-83-1 nc 13,000 40,000 *
Isophorone 78-59-1 ca, nc 580 5,800 18,000
Isopropalin 33820-53-0 nc 920 9,200
Isopropyl methyl phosphonic acid 1832-54-8 nc 6,100 62,000
Isoxaben 82558-50-7 nc 3,100 31,000
Kepone 143-50-0 ca, nc 0.068 0.68 2.2
Lactofen 77501-63-4 nc 120 1,200
Lead 7439-92-1 ca, nc 400 800
Lead (tetraethyl) 78-00-2 nc 0.0061 0.062
Linuron 330-55-2 nc 120 1,200
Lithium 7439-93-2 nc 1,600 20,000
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Londax 83055-99-6 nc 12,000 120,000
Malathion 121-75-5 nc 1,200 12,000
Maleic anhydride 108-31-6 nc 6,100 62,000
Maleic hydrazide 123-33-1 nc 1,700 2,400 *
Malononitrile 109-77-3 nc 6.1 62
Mancozeb 8018-01-7 nc 1,800 18,000
Maneb 12427-38-2 ca, nc 9.1 91 290
Manganese 7439-96-5 nc 3,300 32,000
Mephosfolan 950-10-7 nc 5.5 55
Mepiquat 24307-26-4 nc 1,800 18,000
2-Mercaptobenzothiazole 149-30-4 ca, nc 19 190 590
Mercury and compounds 7487-94-7 nc 23 310
Mercury (methyl) 22967-92-6 nc 6.1 62
Merphos 150-50-5 nc 1.8 18
Merphos oxide 78-48-8 nc 1.8 18
Metalaxyl 57837-19-1 nc 3,700 37,000
Methacrylonitrile 126-98-7 nc 2.1 8.4
Methamidophos 10265-92-6 nc 3.1 31
Methanol 67-56-1 nc 31,000 310,000
Methidathion 950-37-8 nc 61 620
Methomyl 16752-77-5 nc 44 150
Methoxychlor 72-43-5 nc 310 3,100
2-Methoxyethanol 109-86-4 nc 61 620
2-Methoxyethanol acetate 110-49-6 nc 120 1,200
2-Methoxy-5-nitroaniline 99-59-2 ca 12 120 370
Methyl acetate 79-20-9 nc 22,000 92,000
Methyl acrylate 96-33-3 nc 70 230
2-Methylaniline (o-toluidine) 95-53-4 ca 2.3 23 72
2-Methylaniline hydrochloride 636-21-5 ca 3.0 30 96
2-Methyl-4-chlorophenoxyacetic acid 94-74-6 nc 31 310
4-(2-Methyl-4-chlorophenoxy) butyric acid (MCPB) 94-81-5 nc 610 6,200
2-(2-Methyl-4-chlorophenoxy) propionic acid 93-65-2 nc 61 620
2-(2-Methyl-1,4-chlorophenoxy) propionic acid (MCPP) 16484-77-8 nc 61 620
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Methylcyclohexane 108-87-2 nc 230 * 230 *
4,4'-Methylenebisbenzeneamine 101-77-9 ca 2.2 22 69
4,4'-Methylene bis(2-chloroaniline) 101-14-4 ca, nc 4.2 42 130
4,4'-Methylene bis(N,N'-dimethyl) aniline 101-61-1 ca 12 120 370
Methylene bromide 74-95-3 nc 67 230
Methylene chloride 75-09-2 ca, nc 9.3 93 210
4,4'-Methylenediphenyl diisocyanate 101-68-8 nc 10 110
Methyl ethyl ketone (MEK) 78-93-3 nc 23,000 34,000 *
Methyl isobutyl ketone (MIBK) 108-10-1 nc 5,300 17,000 *
Methyl mercaptan 74-93-1 nc 35 350
Methyl methacrylate 80-62-6 nc 2,200 2,700 *
2-Methyl-5-nitroaniline 99-55-8 ca 17 170 520
Methyl parathion 298-00-0 nc 15 150
2-Methylphenol 95-48-7 nc 3,100 31,000
3-Methylphenol 108-39-4 nc 3,100 31,000
4-Methylphenol 106-44-5 nc 310 3,100
Methyl phosphonic acid 993-13-5 nc 1,200 12,000
Methyl styrene (mixture) 25013-15-4 nc 130 540
Methyl styrene (alpha) 98-83-9 nc 680 * 680 *
Methyl tertbutyl ether (MTBE) 1634-04-4 ca, nc 32 320 710
Metolaclor (Dual) 51218-45-2 nc 9,200 92,000
Metribuzin 21087-64-9 nc 1,500 15,000
Mirex 2385-85-5 ca, nc 0.30 3.0 9.6
Molinate 2212-67-1 nc 120 1,200
Molybdenum 7439-98-7 nc 390 5,100
Monochloramine 10599-90-3 nc 6,100 62,000
Naled 300-76-5 nc 120 1,200
Napropamide 15299-99-7 nc 6,100 62,000
Nickel and compounds 7440-02-0 nc 1,600 20,000
Nickel subsulfide 12035-72-2 ca 5,200 NA 11,000
2-Nitroaniline 88-74-4 nc 180 1,800
3-Nitroaniline 99-09-2 ca, nc 18 180
4-Nitroaniline 100-01-6 ca, nc 26 260 180 820
Nitrobenzene 98-95-3 nc 20 100
Nitrofurantoin 67-20-9 nc 4,300 43,000
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Nitrofurazone 59-87-0 ca 0.37 3.7 11
Nitroglycerin 55-63-0 ca 39 390 1,200
Nitroguanidine 556-88-7 nc 6,100 62,000
2-Nitropropane 79-46-9 ca, nc 0.0028 0.028 0.061
N-Nitrosodi-n-butylamine 924-16-3 ca 0.025 0.25 0.58
N-Nitrosodiethanolamine 1116-54-7 ca 0.20 2.0 6.2
N-Nitrosodiethylamine 55-18-5 ca 0.0037 0.037 0.11
N-Nitrosodimethylamine 62-75-9 ca, nc 0.011 0.11 0.34
N-Nitrosodiphenylamine 86-30-6 ca, nc 110 1,100 3,500
N-Nitroso di-n-propylamine 621-64-7 ca 0.078 0.78 2.5
N-Nitroso-N-methylethylamine 10595-95-6 ca 0.025 0.25 0.78
N-Nitrosopyrrolidine 930-55-2 ca 0.26 2.6 8.2
m-Nitrotoluene 99-08-1 nc 730 1,000 *
o-Nitrotoluene 88-72-2 ca, nc 0.93 9.3 22
p-Nitrotoluene 99-99-0 ca, nc 13 130 300
Norflurazon 27314-13-2 nc 2,400 25,000
NuStar 85509-19-9 nc 43 430
Octabromodiphenyl ether 32536-52-0 nc 180 1,800
Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 2691-41-0 nc 3,100 31,000
Octamethylpyrophosphoramide 152-16-9 nc 120 1,200
Oryzalin 19044-88-3 nc 3,100 31,000
Oxadiazon 19666-30-9 nc 310 3,100
Oxamyl 23135-22-0 nc 1,500 15,000
Oxyfluorfen 42874-03-3 nc 180 1,800
Paclobutrazol 76738-62-0 nc 790 8,000
Paraquat 4685-14-7 nc 270 2,800
Parathion 56-38-2 nc 370 3,700
Pebulate 1114-71-2 nc 3,100 31,000
Pendimethalin 40487-42-1 nc 2,400 25,000
Pentabromo-6-chloro cyclohexane 87-84-3 ca 24 240 750
Pentabromodiphenyl ether 32534-81-9 nc 120 1,200
Pentachlorobenzene 608-93-5 nc 49 490
Pentachloronitrobenzene 82-68-8 ca, nc 2.1 21 66
Pentachlorophenol 87-86-5 ca, nc 3.2 32 90
Perchlorate 7601-90-3 nc 55 720
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Permethrin 52645-53-1 nc 3,100 31,000
Phenmedipham 13684-63-4 nc 15,000 150,000
Phenol 108-95-2 nc 18,000 180,000
Phenothiazine 92-84-2 nc 120 1,200
m-Phenylenediamine 108-45-2 nc 370 3,700
o-Phenylenediamine 95-54-5 ca 12 120 370
p-Phenylenediamine 106-50-3 nc 12,000 120,000
Phenylmercuric acetate 62-38-4 nc 4.9 49
2-Phenylphenol 90-43-7 ca 280 2,800 8,900
Phorate 298-02-2 nc 12 120
Phosmet 732-11-6 nc 1,200 12,000
Phosphine 7803-51-2 nc 18 180
Phosphorus (white) 7723-14-0 nc 1.6 20
p-Phthalic acid 100-21-0 nc 61,000 620,000
Phthalic anhydride 85-44-9 nc 120,000 1,000,000 **
Picloram 1918-02-1 nc 4,300 43,000
Pirimiphos-methyl 29232-93-7 nc 610 6,200
Polybrominated biphenyls (PBBs) NA ca, nc 0.062 0.62 0.43 1.9
Polychlorinated biphenyls (PCBs), low-risk mixture4 12674-11-2 ca, nc 3.9 37
Polychlorinated biphenyls (PCBs), high-risk mixture5 11097-69-1 ca, nc 0.25 2.5 1.1 7.4
Polychlorinated terphenyls 61788-33-8 ca 0.12 1.2 3.8
Polynuclear aromatic hydrocarbons
Acenaphthene 83-32-9 nc 3,700 29,000
Anthracene 120-12-7 nc 22,000 240,000
Benz[a]anthracene 56-55-3 ca 0.69 6.9 21
Benzo[b]fluoranthene 205-99-2 ca 0.69 6.9 21
Benzo[k]fluoranthene 207-08-9 ca 6.9 69 210
Benzo[a]pyrene 50-32-8 ca 0.069 0.69 2.1
Chrysene 218-01-9 ca 68 680 2,000
Dibenz[ah]anthracene 53-70-3 ca 0.069 0.69 2.1
Fluoranthene 206-44-0 nc 2,300 22,000
Fluorene 86-73-7 nc 2,700 26,000
Indeno[1,2,3-cd]pyrene 193-39-5 ca 0.69 6.9 21
Naphthalene 91-20-3 nc 56 190
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Pyrene 129-00-0 nc 2,300 29,000
Prochloraz 67747-09-5 ca, nc 3.7 37 110
Profluralin 26399-36-0 nc 370 3,700
Prometon 1610-18-0 nc 920 9,200
Prometryn 7287-19-6 nc 240 2,500
Pronamide 23950-58-5 nc 4,600 46,000
Propachlor 1918-16-7 nc 790 8,000
Propanil 709-98-8 nc 310 3,100
Propargite 2312-35-8 nc 1,200 12,000
Propargyl alcohol 107-19-7 nc 120 1,200
Propazine 139-40-2 nc 1,200 12,000
Propham 122-42-9 nc 1,200 12,000
Propiconazole 60207-90-1 nc 790 8,000
n-Propylbenzene 103-65-1 nc 240 * 240 *
Propylene glycol 57-55-6 nc 30,000 290,000
Propylene glycol, monoethyl ether 52125-53-8 nc 43,000 430,000
Propylene glycol, monomethyl ether 107-98-2 nc 43,000 430,000
Propylene oxide 75-56-9 ca, nc 2.2 22 66
Pursuit 81335-77-5 nc 15,000 150,000
Pydrin 51630-58-1 nc 1,500 15,000
Pyridine 110-86-1 nc 61 620
Quinalphos 13593-03-8 nc 31 310
Quinoline 91-22-5 ca 0.18 1.8 5.7
RDX (Cyclonite) 121-82-4 ca, nc 5.0 50 160
Resmethrin 10453-86-8 nc 1,800 18,000
Ronnel 299-84-3 nc 3,100 31,000
Rotenone 83-79-4 nc 240 2,500
Savey 78587-05-0 nc 1,500 15,000
Selenious Acid 7783-00-8 nc 310 3,100
Selenium 7782-49-2 nc 390 5,100
Selenourea 630-10-4 nc 310 3,100
Sethoxydim 74051-80-2 nc 5,500 55,000
Silver and compounds 7440-22-4 nc 390 5,100
Simazine 122-34-9 ca, nc 4.6 46 140
Sodium azide 26628-22-8 nc 310 4,100
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Sodium diethyldithiocarbamate 148-18-5 ca, nc 2.0 20 64
Sodium fluoroacetate 62-74-8 nc 1.2 12
Sodium metavanadate 13718-26-8 nc 61 620
Strontium, stable 7440-24-6 nc 47,000 610,000
Strychnine 57-24-9 nc 18 180
Styrene 100-42-5 nc 1,500 * 1,500 *
1,1'-Sulfonylbis-(4-chlorobenzene) 80-07-9 nc 310 3,100
Systhane 88671-89-0 nc 1,500 15,000
Tebuthiuron 34014-18-1 nc 4,300 43,000
Temephos 3383-96-8 nc 1,200 12,000
Terbacil 5902-51-2 nc 790 8,000
Terbufos 13071-79-9 nc 1.5 15
Terbutryn 886-50-0 nc 61 620
1,2,4,5-Tetrachlorobenzene 95-94-3 nc 18 180
1,1,1,2-Tetrachloroethane 630-20-6 ca, nc 3.2 32 73
1,1,2,2-Tetrachloroethane 79-34-5 ca, nc 0.42 4.2 9.3
Tetrachloroethylene (PCE) 127-18-4 ca, nc 0.51 5.1 13
2,3,4,6-Tetrachlorophenol 58-90-2 nc 1,800 18,000
p,a,a,a-Tetrachlorotoluene 5216-25-1 ca 0.027 0.27 0.86
Tetrachlorovinphos 961-11-5 ca, nc 23 230 720
Tetraethyldithiopyrophosphate 3689-24-5 nc 31 310
Tetrahydrofuran 109-99-9 ca, nc 9.5 95 210
Thallium and compounds 7440-28-0 nc 5.2 67
Thiobencarb 28249-77-6 nc 610 6,200
Thiocyanate NA nc 3,100 31,000
Thiofanox 39196-18-4 nc 18 180
Thiophanate-methyl 23564-05-8 nc 4,900 49,000
Thiram 137-26-8 nc 310 3,100
Tin 7440-31-5 nc 47,000 610,000
Titanium 7440-32-6 nc 310,000 1,000,000 **
Toluene 108-88-3 nc 650 * 650 *
Toluene-2,4-diamine 95-80-7 ca 0.17 1.7 5.4
Toluene-2,5-diamine 95-70-5 nc 37,000 370,000
Toluene-2,6-diamine 823-40-5 nc 12,000 120,000
p-Toluidine 106-49-0 ca 2.9 29 91
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Toxaphene 8001-35-2 ca 0.50 5.0 16
Tralomethrin 66841-25-6 nc 460 4,600
Triallate 2303-17-5 nc 790 8,000
Triasulfuron 82097-50-5 nc 610 6,200
1,2,4-Tribromobenzene 615-54-3 nc 310 3,100
Tributyl phosphate 126-73-8 ca, nc 60 600 1,900
Tributyltin oxide (TBTO) 56-35-9 nc 18 180
2,4,6-Trichloroaniline 634-93-5 ca 16 160 510
2,4,6-Trichloroaniline hydrochloride 33663-50-2 ca 19 190 590
1,2,4-Trichlorobenzene 120-82-1 nc 62 220
1,1,1-Trichloroethane 71-55-6 nc 1,200 * 1,200 *
1,1,2-Trichloroethane 79-00-5 ca, nc 0.74 7.4 16
Trichloroethylene (TCE) 79-01-6 ca, nc 3.0 30 17 65
Trichlorofluoromethane 75-69-4 nc 390 1,300
2,4,5-Trichlorophenol 95-95-4 nc 6,100 62,000
2,4,6-Trichlorophenol 88-06-2 ca, nc 6.1 62
2,4,5-Trichlorophenoxyacetic Acid 93-76-5 nc 610 6,200
2-(2,4,5-Trichlorophenoxy) propionic acid 93-72-1 nc 490 4,900
1,1,2-Trichloropropane 598-77-6 nc 15 51
1,2,3-Trichloropropane 96-18-4 ca, nc 0.0050 0.050 0.11
1,2,3-Trichloropropene 96-19-5 nc 0.71 2.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113) 76-13-1 nc 5,600 * 5,600 *
Tridiphane 58138-08-2 nc 180 1,800
Triethylamine 121-44-8 nc 23 86
Trifluralin 1582-09-8 ca, nc 71 710 460 2,200
Trimellitic Anhydride (TMAN) 552-30-7 nc 8.6 86
1,2,4-Trimethylbenzene 95-63-6 nc 52 170
1,3,5-Trimethylbenzene 108-67-8 nc 21 70
Trimethyl phosphate 512-56-1 ca 15 150 470
1,3,5-Trinitrobenzene 99-35-4 nc 1,800 18,000
Trinitrophenylmethylnitramine 479-45-8 nc 610 6,200
2,4,6-Trinitrotoluene 118-96-7 ca, nc 18 180 31 310
Triphenylphosphine oxide 791-28-6 nc 1,200 12,000
Tris(2-chloroethyl) phosphate 115-96-8 ca, nc 39 390 1,200
Tris(2-ethylhexyl) phosphate 78-42-2 ca, nc 170 1,700 5,400
CONTAMINANT CASRN Class Residential (mg/kg) Non- residential (mg/kg)
Carcinogen Non- carcinogen
10-6 Risk 10-5 Risk
Uranium (chemical toxicity only) 7440-61-0 nc 16 200
Vanadium and compounds 7440-62-2 nc 78 1,000
Vernam 1929-77-7 nc 61 620
Vinclozolin 50471-44-8 nc 1,500 15,000
Vinyl acetate 108-05-4 nc 430 1,400
Vinyl bromide 593-60-2 ca, nc 0.19 1.9 4.2
Vinyl chloride 75-01-4 ca, nc 0.085 NA 0.75
Warfarin 81-81-2 nc 18 180
Xylenes 1330-20-7 nc 270 420 *
Zinc 7440-66-6 nc 23,000 310,000
Zinc phosphide 1314-84-7 nc 23 310
Zineb 12122-67-7 nc 3,100 31,000
NA indicates not applicable.
Class is the classification of the chemical. "ca" indicates carcinogenic effects; "nc" indicates non-carcinogenic effects. Chemicals that have both carcinogenic and non-carcinogenic effects are classified "ca, nc".
* Indicates SRL is based on the chemical-specific saturation level in soil for volatile organic chemicals only.
** Indicates SRL is based on a 100% saturation ceiling limit for non-volatile organic chemicals.
1Arsenic standards are not risk-based standards, but based on background.
2Cyanide (free): Free cyanide is a subset of total cyanides. If any ADHS approved method for total cyanide reports a concentration exceeding this standard, further analyses to differentiate free cyanide from other cyanide metal complexes is required.
3Cyanide (hydrogen): If the cyanide concentrations using any method exceed the hydrogen cyanide standard, then hydrogen cyanide vapor samples should be collected at the site.
4PCBs, low-risk mixture: Use if laboratory analysis confirms that the total PCB concentration consists of 0.5 percent or less of congeners that contain five or more chlorines and that no dioxin-like congeners are present.
5PCBs, high-risk mixture: Use if only total PCB concentration is reported by any ADHS licensed analytical method, or if laboratory analysis confirms that the total PCB concentration consists of more than 0.5 percent congeners that contain five or more chlorines or that dioxin-like congeners are present.
Bold indicates adequate evidence to classify the chemical as a known human carcinogen.
CASRN is the Chemical Abstract System Registry Number.

Ariz. Admin. Code tit. 18, ch. 7, art. 2, app A

Adopted by emergency action effective March 29, 1996, pursuant to A.R.S. § 41-1026 and Laws 1995, Ch. 232, § 5; in effect until permanent rules are adopted and in place no later than August 1, 1997, pursuant to A.R.S. § 49-152 and Laws 1995, Ch. 232, § 5 (Supp. 96-1). Historical note revised to clarify exemptions of emergency adoption (Supp. 97-1). Interim emergency appendix reinstated at the request of the Department; historical note from Supp. 97-3 stating emergency expired removed for clarity. Appendix A adopted permanently effective December 4, 1997, replacing emergency appendix (Supp. 97-4). Amended to correct measurement units in columns 5 and 6 from "mg/k" to "mg/kg" (Supp. 01-4). Former Appendix A renumbered to Appendix B; new Appendix A made by final rulemaking at 13 A.A.R. 971, effective May 5, 2007 (Supp. 07-1).