Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgALAR 1596-84-5 1.8E-02 C 5.1E-06 C 1.5E-01 I 1 0.1 2.7E+01 c 9.6E+01 c 4.8E-01 c 2.4E+00 c 3.7E+00 c 8.2E-04Acephate 30560-19-1 8.7E-03 I 4.0E-03 I 1 0.1 5.6E+01 c** 2.0E+02 c* 7.7E+00 c* 1.9E-03Acetaldehyde 75-07-0 2.2E-06 I 9.0E-03 I V 1 1.1E+05 1.1E+01 c** 5.3E+01 c** 1.1E+00 c** 5.6E+00 c** 2.2E+00 c** 4.5E-04Acetochlor 34256-82-1 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 4.0E-01Acetone 67-64-1 9.0E-01 I 3.1E+01 A V 1 1.1E+05 6.1E+04 n 6.1E+05 nms 3.2E+04 n 1.4E+05 n 2.2E+04 n 4.4E+00Acetone Cyanohydrin 75-86-5 3.0E-03 P 6.0E-02 P V 1 1.1E+05 2.0E+02 n 2.1E+03 n 6.3E+01 n 2.6E+02 n 5.8E+01 n 1.2E-02Acetonitrile 75-05-8 6.0E-02 I V 1 1.3E+05 8.7E+02 n 3.7E+03 n 6.3E+01 n 2.6E+02 n 1.3E+02 n 2.6E-02Acetophenone 98-86-2 1.0E-01 I V 1 2.3E+03 7.8E+03 ns 1.0E+05 nms 3.7E+03 n 1.1E+00Acetylaminofluorene, 2- 53-96-3 3.8E+00 C 1.3E-03 C 1 0.1 1.3E-01 c 4.5E-01 c 1.9E-03 c 9.4E-03 c 1.8E-02 c 9.6E-05Acrolein 107-02-8 5.0E-04 I 2.0E-05 I V 1 2.5E+04 1.6E-01 n 6.8E-01 n 2.1E-02 n 8.8E-02 n 4.2E-02 n 8.6E-06Acrylamide 79-06-1 4.5E+00 I 1.3E-03 I 2.0E-04 I 1 0.1 1.1E-01 c 3.8E-01 c 1.9E-03 c 9.4E-03 c 1.5E-02 c 3.3E-06Acrylic Acid 79-10-7 5.0E-01 I 1.0E-03 I 1 0.1 3.0E+04 n 2.9E+05 nm 1.0E+00 n 4.4E+00 n 1.8E+04 n 3.7E+00Acrylonitrile 107-13-1 5.4E-01 I 6.8E-05 I 4.0E-02 A 2.0E-03 I V 1 1.1E+04 2.4E-01 c* 1.2E+00 c* 3.6E-02 c* 1.8E-01 c* 4.5E-02 c* 9.9E-06Adiponitrile 111-69-3 6.0E-03 P 1 0.1 8.5E+06 nm 3.6E+07 nm 6.3E+00 n 2.6E+01 nAlachlor 15972-60-8 5.6E-02 C 1.0E-02 I 1 0.1 8.7E+00 c* 3.1E+01 c 1.2E+00 c 2.0E+00 6.8E-04 1.1E-03Aldicarb 116-06-3 1.0E-03 I 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 9.7E-03Aldicarb Sulfone 1646-88-4 1.0E-03 I 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 8.0E-03Aldrin 309-00-2 1.7E+01 I 4.9E-03 I 3.0E-05 I 1 0.1 2.9E-02 c* 1.0E-01 c 5.0E-04 c 2.5E-03 c 4.0E-03 c 8.4E-04Ally 74223-64-6 2.5E-01 I 1 0.1 1.5E+04 n 1.5E+05 nm 9.1E+03 n 3.1E+00Allyl Alcohol 107-18-6 5.0E-03 I 3.0E-04 P 1 0.1 3.1E+02 n 3.1E+03 n 3.1E-01 n 1.3E+00 n 1.8E+02 n 3.7E-02Allyl Chloride 107-05-1 2.1E-02 C 6.0E-06 C 1.0E-03 I V 1 1.5E+03 7.0E-01 c** 3.5E+00 c** 4.1E-01 c** 2.0E+00 c** 6.5E-01 c** 2.1E-04Aluminum 7429-90-5 1.0E+00 P 5.0E-03 P 1 7.7E+04 n 9.9E+05 nm 5.2E+00 n 2.2E+01 n 3.7E+04 n 5.5E+04Aluminum Phosphide 20859-73-8 4.0E-04 I 1 3.1E+01 n 4.1E+02 n 1.5E+01 nAmdro 67485-29-4 3.0E-04 I 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 1.4E+04Ametryn 834-12-8 9.0E-03 I 1 0.1 5.5E+02 n 5.5E+03 n 3.3E+02 n 3.6E-01Aminobiphenyl, 4- 92-67-1 2.1E+01 C 6.0E-03 C 1 0.1 2.3E-02 c 8.2E-02 c 4.1E-04 c 2.0E-03 c 3.2E-03 c 1.1E-05Aminophenol, m- 591-27-5 8.0E-02 P 1 0.1 4.9E+03 n 4.9E+04 n 2.9E+03 n 1.0E+00Aminophenol, p- 123-30-8 2.0E-02 P 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 2.5E-01Amitraz 33089-61-1 2.5E-03 I 1 0.1 1.5E+02 n 1.5E+03 n 9.1E+01 n 1.2E+02Ammonia 7664-41-7 1.0E-01 I 1 1.0E+02 n 4.4E+02 nAmmonium Perchlorate 7790-98-9 7.0E-04 I 1 5.5E+01 n 7.2E+02 n 2.6E+01 nAmmonium Sulfamate 7773-06-0 2.0E-01 I 1 1.6E+04 n 2.0E+05 nm 7.3E+03 nAniline 62-53-3 5.7E-03 I 1.6E-06 C 7.0E-03 P 1.0E-03 I 1 0.1 8.5E+01 c** 3.0E+02 c* 1.0E+00 n 4.4E+00 n 1.2E+01 c* 3.4E-03Antimony (metallic) 7440-36-0 4.0E-04 I 0.15 3.1E+01 n 4.1E+02 n 1.5E+01 n 6.0E+00 6.6E-01 2.7E-01Antimony Pentoxide 1314-60-9 5.0E-04 H 0.15 3.9E+01 n 5.1E+02 n 1.8E+01 nAntimony Potassium Tartrate 11071-15-1 9.0E-04 H 0.15 7.0E+01 n 9.2E+02 n 3.3E+01 nAntimony Tetroxide 1332-81-6 4.0E-04 H 0.15 3.1E+01 n 4.1E+02 n 1.5E+01 nAntimony Trioxide 1309-64-4 2.0E-04 I 0.15 2.8E+05 nm 1.2E+06 nm 2.1E-01 n 8.8E-01 nApollo 74115-24-5 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 6.1E+02Aramite 140-57-8 2.5E-02 I 7.1E-06 I 5.0E-02 H 1 0.1 1.9E+01 c 6.9E+01 c 3.4E-01 c 1.7E+00 c 2.7E+00 c 1.1E-01Arsenic, Inorganic 7440-38-2 1.5E+00 I 4.3E-03 I 3.0E-04 I 1.5E-05 C 1 0.03 3.9E-01 c* 1.6E+00 c 5.7E-04 c* 2.9E-03 c* 4.5E-02 c 1.0E+01 1.3E-03 2.9E-01Arsine 7784-42-1 5.0E-05 I 1 7.1E+04 n 3.0E+05 nm 5.2E-02 n 2.2E-01 nAssure 76578-14-8 9.0E-03 I 1 0.1 5.5E+02 n 5.5E+03 n 3.3E+02 n 3.6E+00Asulam 3337-71-1 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 5.2E-01Atrazine 1912-24-9 2.3E-01 C 3.5E-02 I 1 0.1 2.1E+00 c 7.5E+00 c 2.9E-01 c 3.0E+00 1.9E-04 2.0E-03Avermectin B1 65195-55-3 4.0E-04 I 1 0.1 2.4E+01 n 2.5E+02 n 1.5E+01 n 4.1E-02Azobenzene 103-33-3 1.1E-01 I 3.1E-05 I V 1 4.9E+00 c 2.2E+01 c 7.8E-02 c 4.0E-01 c 1.2E-01 c 5.1E-04Barium 7440-39-3 2.0E-01 I 5.0E-04 H 0.07 1.5E+04 n 1.9E+05 nm 5.2E-01 n 2.2E+00 n 7.3E+03 n 2.0E+03 3.0E+02 8.2E+01Baygon 114-26-1 4.0E-03 I 1 0.1 2.4E+02 n 2.5E+03 n 1.5E+02 n 4.2E-02Bayleton 43121-43-3 3.0E-02 I 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 1.2E+01Baythroid 68359-37-5 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 3.3E+02Benefin 1861-40-1 3.0E-01 I 1 0.1 1.8E+04 n 1.8E+05 nm 1.1E+04 n 2.1E+02Benomyl 17804-35-2 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 2.3E+00Bentazon 25057-89-0 3.0E-02 I 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 3.0E-01Benzaldehyde 100-52-7 1.0E-01 I V 1 1.9E+03 7.8E+03 ns 1.0E+05 nms 3.7E+03 n 9.7E-01Benzene 71-43-2 5.5E-02 I 7.8E-06 I 4.0E-03 I 3.0E-02 I V 1 2.0E+03 1.1E+00 c* 5.6E+00 c* 3.1E-01 c 1.6E+00 c* 4.1E-01 c 5.0E+00 2.3E-04 2.8E-03Benzenethiol 108-98-5 1.0E-05 H V 1 1.4E+03 7.8E-01 n 1.0E+01 n 3.7E-01 n 2.7E-04Benzidine 92-87-5 2.3E+02 I 6.7E-02 I 3.0E-03 I M 1 0.1 5.0E-04 c 7.5E-03 c 1.4E-05 c 1.8E-04 c 9.4E-05 c 5.3E-07Benzoic Acid 65-85-0 4.0E+00 I 1 0.1 2.4E+05 nm 2.5E+06 nm 1.5E+05 n 3.3E+01Benzotrichloride 98-07-7 1.3E+01 I V 1 1.6E+02 4.9E-02 c 2.2E-01 c 5.2E-03 c 1.3E-05Benzyl Alcohol 100-51-6 5.0E-01 P 1 0.1 3.1E+04 n 3.1E+05 nm 1.8E+04 n 4.2E+00Benzyl Chloride 100-44-7 1.7E-01 I 4.9E-05 C 2.0E-03 P 1.0E-03 P V 1 6.4E+01 1.1E+00 c* 5.1E+00 c* 5.0E-02 c* 2.5E-01 c* 7.9E-02 c* 9.8E-05Beryllium and compounds 7440-41-7 2.4E-03 I 2.0E-03 I 2.0E-05 I 0.007 1.6E+02 n 2.0E+03 n 1.0E-03 c* 5.1E-03 c* 7.3E+01 n 4.0E+00 5.8E+01 3.2E+00Bidrin 141-66-2 1.0E-04 I 1 0.1 6.1E+00 n 6.2E+01 n 3.7E+00 n 3.4E-03Bifenox 42576-02-3 9.0E-03 P 1 0.1 5.5E+02 n 5.5E+03 n 3.3E+02 n 2.6E+00Biphenthrin 82657-04-3 1.5E-02 I 1 0.1 9.2E+02 n 9.2E+03 n 5.5E+02 n 3.5E+03Biphenyl, 1,1'- 92-52-4 5.0E-02 I V 1 2.6E+02 3.9E+03 ns 5.1E+04 ns 1.8E+03 n 2.3E+01Bis(2-chloro-1-methylethyl) ether 108-60-1 7.0E-02 H 1.0E-05 H 4.0E-02 I V 1 5.7E+02 3.5E+00 c 1.7E+01 c 2.4E-01 c 1.2E+00 c 3.2E-01 c 9.0E-05Bis(2-chloroethoxy)methane 111-91-1 3.0E-03 P 1 0.1 1.8E+02 n 1.8E+03 n 1.1E+02 n 2.3E-02Bis(2-chloroethyl)ether 111-44-4 1.1E+00 I 3.3E-04 I V 1 3.3E+03 1.9E-01 c 9.0E-01 c 7.4E-03 c 3.7E-02 c 1.2E-02 c 2.7E-06Bis(2-ethylhexyl)phthalate 117-81-7 1.4E-02 I 2.4E-06 C 2.0E-02 I 1 0.1 3.5E+01 c* 1.2E+02 c 1.0E+00 c 5.1E+00 c 4.8E+00 c 6.0E+00 1.6E+00 2.0E+00Bis(chloromethyl)ether 542-88-1 2.2E+02 I 6.2E-02 I V 1 2.8E+03 2.7E-04 c 1.3E-03 c 3.9E-05 c 2.0E-04 c 6.2E-05 c 1.3E-08Bisphenol A 80-05-7 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 2.7E+02Boron And Borates Only 7440-42-8 2.0E-01 I 2.0E-02 H 1 1.6E+04 n 2.0E+05 nm 2.1E+01 n 8.8E+01 n 7.3E+03 n 2.3E+01Boron Trifluoride 7637-07-2 7.0E-04 H 1 9.9E+05 nm 4.2E+06 nm 7.3E-01 n 3.1E+00 nBromate 15541-45-4 7.0E-01 I 4.0E-03 I 1 9.1E-01 c 4.1E+00 c 9.6E-02 c 1.0E+01 7.4E-04 7.7E-02Bromobenzene 108-86-1 2.0E-02 P 1.0E-02 P V 1 7.7E+02 9.4E+01 n 4.1E+02 n 1.0E+01 n 4.4E+01 n 2.0E+01 n 1.5E-02Key: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey keyPage 1 of 9Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgKey: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey keyBromodichloromethane 75-27-4 6.2E-02 I 3.7E-05 C 2.0E-02 I V 1 9.9E+02 2.8E-01 c 1.4E+00 c 6.6E-02 c 3.3E-01 c 1.2E-01 c 3.3E-05Bromoform 75-25-2 7.9E-03 I 1.1E-06 I 2.0E-02 I 1 0.1 6.1E+01 c* 2.2E+02 c* 2.2E+00 c 1.1E+01 c 8.5E+00 c* 2.3E-03Bromomethane 74-83-9 1.4E-03 I 5.0E-03 I V 1 3.6E+03 7.9E+00 n 3.5E+01 n 5.2E+00 n 2.2E+01 n 8.7E+00 n 2.2E-03Bromophos 2104-96-3 5.0E-03 H 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 7.7E-01Bromoxynil 1689-84-5 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 7.8E-01Bromoxynil Octanoate 1689-99-2 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 7.2E+00Butadiene, 1,3- 106-99-0 3.4E+00 C 3.0E-05 I 2.0E-03 I V 1 6.9E+02 5.4E-02 c* 2.6E-01 c* 8.1E-02 c* 4.1E-01 c* 1.8E-02 c 9.8E-06Butanol, N- 71-36-3 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 7.5E-01Butyl Benzyl Phthlate 85-68-7 1.9E-03 P 2.0E-01 I 1 0.1 2.6E+02 c* 9.1E+02 c 3.5E+01 c 6.7E-01Butyl alcohol, sec- 78-92-2 2.0E+00 P 3.0E+01 P 1.6E+05 nm 2.0E+06 nm 3.1E+04 n 1.3E+05 n 7.3E+04 nButylate 2008-41-5 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 2.6E+00Butylphthalyl Butylglycolate 85-70-1 1.0E+00 I 1 0.1 6.1E+04 n 6.2E+05 nm 3.7E+04 n 1.1E+03Cacodylic Acid 75-60-5 2.0E-02 A 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 nCadmium (Diet) 7440-43-9 4.2E-03 C 1.0E-03 I 1.0E-05 A 0.025 0.001 7.0E+01 n 8.0E+02 nCadmium (Water) 7440-43-9 1.8E-03 I 5.0E-04 I 1.0E-05 A 0.05 0.001 1.4E-03 c** 6.8E-03 c** 1.8E+01 n 5.0E+00 1.4E+00 3.8E-01Caprolactam 105-60-2 5.0E-01 I 1 0.1 3.1E+04 n 3.1E+05 nm 1.8E+04 n 5.7E+00Captafol 2425-06-1 1.5E-01 C 4.3E-05 C 2.0E-03 I 1 0.1 3.2E+00 c* 1.1E+01 c 5.7E-02 c 2.9E-01 c 4.5E-01 c 2.5E-03Captan 133-06-2 2.3E-03 C 6.6E-07 C 1.3E-01 I 1 0.1 2.1E+02 c* 7.5E+02 c 3.7E+00 c 1.9E+01 c 2.9E+01 c 5.6E-02Carbaryl 63-25-2 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 2.5E+00Carbofuran 1563-66-2 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 4.0E+01 6.2E-02 1.4E-02Carbon Disulfide 75-15-0 1.0E-01 I 7.0E-01 I V 1 2.6E+02 6.7E+02 ns 3.0E+03 ns 7.3E+02 n 3.1E+03 n 1.0E+03 n 2.7E-01Carbon Tetrachloride 56-23-5 1.3E-01 I 1.5E-05 I 7.0E-04 I 1.9E-01 A V 1 4.8E+02 2.5E-01 c 1.3E+00 c 1.6E-01 c 8.2E-01 c 2.0E-01 c 5.0E+00 7.9E-05 2.0E-03Carbosulfan 55285-14-8 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.1E+01Carboxin 5234-68-4 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 1.3E+00Chloral Hydrate 302-17-0 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 7.4E-01Chloramben 133-90-4 1.5E-02 I 1 0.1 9.2E+02 n 9.2E+03 n 5.5E+02 n 1.2E-01Chloranil 118-75-2 4.0E-01 H 1 0.1 1.2E+00 c 4.3E+00 c 1.7E-01 c 3.7E-05Chlordane 12789-03-6 3.5E-01 I 1.0E-04 I 5.0E-04 I 7.0E-04 I 1 0.04 1.6E+00 c* 6.5E+00 c* 2.4E-02 c* 1.2E-01 c* 1.9E-01 c* 2.0E+00 3.3E-02 3.5E-01Chlordecone (Kepone) 143-50-0 1.6E+01 C 4.6E-03 C 5.0E-04 A 1 0.1 3.0E-02 c 1.1E-01 c 5.3E-04 c 2.7E-03 c 4.2E-03 c 1.5E-04Chlorfenvinphos 470-90-6 7.0E-04 A 1 0.1 4.3E+01 n 4.3E+02 n 2.6E+01 n 3.5E-02Chlorimuron, Ethyl- 90982-32-4 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 2.6E-01Chlorine 7782-50-5 1.0E-01 I 1.5E-04 A 1 7.5E+03 n 9.1E+04 n 1.5E-01 n 6.4E-01 n 3.7E+03 n 1.6E+00Chlorine Dioxide 10049-04-4 3.0E-02 I 2.0E-04 I 1 2.3E+03 n 3.0E+04 n 2.1E-01 n 8.8E-01 n 1.1E+03 nChlorite (Sodium Salt) 7758-19-2 3.0E-02 I 1 2.3E+03 n 3.1E+04 n 1.1E+03 nChloro-1,1-difluoroethane, 1- 75-68-3 5.0E+01 I V 1 1.2E+03 5.9E+04 ns 2.5E+05 nms 5.2E+04 n 2.2E+05 n 1.0E+05 n 5.3E+01Chloro-1,3-butadiene, 2- 126-99-8 2.0E-02 H 7.0E-03 H V 1 8.2E+02 8.6E+00 n 3.6E+01 n 7.3E+00 n 3.1E+01 n 1.4E+01 n 7.7E-03Chloro-2-methylaniline HCl, 4- 3165-93-3 4.6E-01 H 1 0.1 1.1E+00 c 3.7E+00 c 1.5E-01 c 6.4E-05Chloro-2-methylaniline, 4- 95-69-2 2.7E-01 C 7.7E-05 C 1 0.1 1.8E+00 c 6.4E+00 c 3.2E-02 c 1.6E-01 c 2.5E-01 c 1.1E-04Chloroacetic Acid 79-11-8 2.0E-03 H 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 1.5E-02Chloroacetophenone, 2- 532-27-4 3.0E-05 I 1 0.1 4.3E+04 n 1.8E+05 nm 3.1E-02 n 1.3E-01 nChloroaniline, p- 106-47-8 2.0E-01 P 4.0E-03 I 1 0.1 2.4E+00 c 8.6E+00 c 3.4E-01 c 1.2E-04Chlorobenzene 108-90-7 2.0E-02 I 5.0E-02 P V 1 8.6E+02 3.1E+02 n 1.5E+03 ns 5.2E+01 n 2.2E+02 n 9.1E+01 n 1.0E+02 6.8E-02 7.5E-02Chlorobenzilate 510-15-6 1.1E-01 C 3.1E-05 C 2.0E-02 I 1 0.1 4.4E+00 c 1.6E+01 c 7.8E-02 c 4.0E-01 c 6.1E-01 c 1.7E-03Chlorobenzotrifluoride, 4- 98-56-6 3.0E-03 P 3.0E-01 P V 1 5.5E+02 2.1E+02 n 2.4E+03 ns 3.1E+02 n 1.3E+03 n 9.3E+01 n 3.9E-01Chlorobutane, 1- 109-69-3 4.0E-02 P V 1 7.9E+02 3.1E+03 ns 4.1E+04 ns 1.5E+03 n 6.2E-01Chlorodifluoromethane 75-45-6 5.0E+01 I V 1 1.7E+03 5.3E+04 ns 2.2E+05 nms 5.2E+04 n 2.2E+05 n 1.0E+05 n 4.4E+01Chloroform 67-66-3 3.1E-02 C 2.3E-05 I 1.0E-02 I 9.8E-02 A V 1 2.7E+03 3.0E-01 c 1.5E+00 c 1.1E-01 c 5.3E-01 c 1.9E-01 c 5.5E-05Chloromethane 74-87-3 9.0E-02 I V 1 1.4E+03 1.2E+02 n 5.1E+02 n 9.4E+01 n 3.9E+02 n 1.9E+02 n 4.9E-02Chloromethyl Methyl Ether 107-30-2 2.4E+00 C 6.9E-04 C V 1 8.1E+03 1.8E-02 c 8.8E-02 c 3.5E-03 c 1.8E-02 c 5.6E-03 c 1.2E-06Chloronaphthalene, Beta- 91-58-7 8.0E-02 I V 1 2.1E+02 6.3E+03 ns 8.2E+04 ns 2.9E+03 n 1.8E+01Chloronitrobenzene, o- 88-73-3 9.7E-03 P 1.0E-03 P 7.0E-05 P 1 0.1 5.0E+01 c** 1.8E+02 c** 7.3E-02 n 3.1E-01 n 6.9E+00 c** 5.8E-03Chloronitrobenzene, p- 100-00-5 6.3E-03 P 1.0E-03 P 6.0E-04 P 1 0.1 6.1E+01 n 2.7E+02 c** 6.3E-01 n 2.6E+00 n 1.1E+01 c** 8.7E-03Chlorophenol, 2- 95-57-8 5.0E-03 I V 1 7.9E+04 3.9E+02 n 5.1E+03 n 1.8E+02 n 2.0E-01Chloropicrin 76-06-2 4.0E-04 CChlorothalonil 1897-45-6 3.1E-03 C 8.9E-07 C 1.5E-02 I 1 0.1 1.6E+02 c** 5.6E+02 c* 2.7E+00 c 1.4E+01 c 2.2E+01 c* 1.1E-01Chlorotoluene, o- 95-49-8 2.0E-02 I V 1 1.0E+03 1.6E+03 ns 2.0E+04 ns 7.3E+02 n 8.0E-01Chlorotoluene, p- 106-43-4 7.0E-02 P V 1 2.9E+02 5.5E+03 ns 7.2E+04 ns 2.6E+03 n 2.8E+00Chlorpropham 101-21-3 2.0E-01 I 1 0.1 1.2E+04 n 1.2E+05 nm 7.3E+03 n 4.5E+00Chlorpyrifos 2921-88-2 3.0E-03 I 1 0.1 1.8E+02 n 1.8E+03 n 1.1E+02 n 1.5E+00Chlorpyrifos Methyl 5598-13-0 1.0E-02 H 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.5E+00Chlorsulfuron 64902-72-3 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.2E+00Chlorthiophos 60238-56-4 8.0E-04 H 1 0.1 4.9E+01 n 4.9E+02 n 2.9E+01 n 7.8E-01Chromium (III) (Insoluble Salts) 16065-83-1 1.5E+00 I 0.013 1.2E+05 nm 1.5E+06 nm 5.5E+04 n 9.9E+07Chromium VI (chromic acid mists) 18540-29-9 8.4E-02 I 3.0E-03 I 8.0E-06 I 1 2.9E-05 c 1.5E-04 c 1.1E+02 n 2.1E+00Chromium VI (particulates) 18540-29-9 8.4E-02 I 3.0E-03 I 1.0E-04 I 0.025 3.9E+01 c** 2.0E+02 c* 2.9E-05 c 1.5E-04 cChromium(VI), Aerosol Mists 7738-94-5 2.0E-02 C 5.0E-06 A 1 1.3E+03 n 1.2E+04 n 5.2E-03 n 2.2E-02 n 7.3E+02 nChromium, Total (1:6 ratio Cr VI : Cr III) 7440-47-3 1.2E-02 I 0.013 2.8E+02 c 1.4E+03 c 2.0E-04 c 1.0E-03 c 1.0E+02 1.8E+05Cobalt 7440-48-4 9.0E-03 P 3.0E-04 P 6.0E-06 P 1 2.3E+01 n 3.0E+02 n 2.7E-04 c* 1.4E-03 c* 1.1E+01 n 4.9E-01Coke Oven Emissions 8007-45-2 6.2E-04 I M 1 0.1 1.5E-03 c 2.0E-02 cCopper 7440-50-8 4.0E-02 H 1 3.1E+03 n 4.1E+04 n 1.5E+03 n 1.3E+03 5.1E+01 4.6E+01Cresol, m- 108-39-4 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.9E+00Cresol, o- 95-48-7 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 2.0E+00Cresol, p- 106-44-5 5.0E-03 H 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 1.9E-01Cresols 1319-77-3 1.0E-01 A 6.0E-01 C V 1 7.1E+04 7.6E+03 n 9.3E+04 ns 6.3E+02 n 2.6E+03 n 9.3E+02 n 1.0E+00Crotonaldehyde, trans- 123-73-9 1.9E+00 H V 1 2.4E+04 3.4E-01 c 1.5E+00 c 3.5E-02 c 7.4E-06Cumene 98-82-8 1.0E-01 I 4.0E-01 I V 1 3.1E+02 2.2E+03 ns 1.1E+04 ns 4.2E+02 n 1.8E+03 n 6.8E+02 n 1.3E+00Cyanazine 21725-46-2 8.4E-01 H 2.0E-03 H 1 0.1 5.8E-01 c 2.1E+00 c 8.0E-02 c 3.6E-05Page 2 of 9Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgKey: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey keyCyanides~Calcium Cyanide 592-01-8 4.0E-02 I 1 3.1E+03 n 4.1E+04 n 1.5E+03 n~Copper Cyanide 544-92-3 5.0E-03 I 1 3.9E+02 n 5.1E+03 n 1.8E+02 n~Cyanide (CN-) 57-12-5 2.0E-02 I 1 1.6E+03 n 2.0E+04 n 7.3E+02 n 2.0E+02 7.4E+00 2.0E+00~Cyanogen 460-19-5 4.0E-02 I V 1 3.1E+03 n 4.1E+04 n 1.5E+03 n~Cyanogen Bromide 506-68-3 9.0E-02 I V 1 7.0E+03 n 9.2E+04 n 3.3E+03 n~Cyanogen Chloride 506-77-4 5.0E-02 I V 1 3.9E+03 n 5.1E+04 n 1.8E+03 n~Hydrogen Cyanide 74-90-8 2.0E-02 I 3.0E-03 I V 1 1.6E+03 n 2.0E+04 n 3.1E+00 n 1.3E+01 n 6.2E+00 n~Potassium Cyanide 151-50-8 5.0E-02 I 1 3.9E+03 n 5.1E+04 n 1.8E+03 n~Potassium Silver Cyanide 506-61-6 2.0E-01 I 0.04 1.6E+04 n 2.0E+05 nm 7.3E+03 n~Silver Cyanide 506-64-9 1.0E-01 I 0.04 7.8E+03 n 1.0E+05 nm 3.7E+03 n~Sodium Cyanide 143-33-9 4.0E-02 I 1 3.1E+03 n 4.1E+04 n 1.5E+03 n~Thiocyanate 463-56-9 2.0E-04 P V 1 5.6E+03 1.6E+01 n 2.0E+02 n 7.3E+00 n 1.5E-03~Zinc Cyanide 557-21-1 5.0E-02 I 1 3.9E+03 n 5.1E+04 n 1.8E+03 nCyclohexane 110-82-7 6.0E+00 I V 1 1.2E+02 7.2E+03 ns 3.0E+04 ns 6.3E+03 n 2.6E+04 n 1.3E+04 n 1.3E+01Cyclohexane, 1,2,3,4,5-pentabromo-6-chloro- 87-84-3 2.3E-02 H 1 0.1 2.1E+01 c 7.5E+01 c 2.9E+00 c 2.0E-02Cyclohexanone 108-94-1 5.0E+00 I 1 0.1 3.1E+05 nm 3.1E+06 nm 1.8E+05 n 4.2E+01Cyclohexylamine 108-91-8 2.0E-01 I 1 0.1 1.2E+04 n 1.2E+05 nm 7.3E+03 n 2.0E+00Cyhalothrin/karate 68085-85-8 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 1.7E+02Cypermethrin 52315-07-8 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 7.9E+01Cyromazine 66215-27-8 7.5E-03 I 1 0.1 4.6E+02 n 4.6E+03 n 2.7E+02 n 6.6E-02DDD 72-54-8 2.4E-01 I 6.9E-05 C 1 0.1 2.0E+00 c 7.2E+00 c 3.5E-02 c 1.8E-01 c 2.8E-01 c 8.6E-02DDE, p,p'- 72-55-9 3.4E-01 I 9.7E-05 C 1 0.1 1.4E+00 c 5.1E+00 c 2.5E-02 c 1.3E-01 c 2.0E-01 c 6.0E-02DDT 50-29-3 3.4E-01 I 9.7E-05 I 5.0E-04 I 1 0.03 1.7E+00 c* 7.0E+00 c* 2.5E-02 c 1.3E-01 c 2.0E-01 c* 8.7E-02Dacthal 1861-32-1 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 2.8E-01Dalapon 75-99-0 3.0E-02 I 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.0E+02 2.2E-01 4.1E-02Decabromodiphenyl ether, 2,2',3,3',4,4',5,5',6,6'- (BDE-209) 1163-19-5 7.0E-04 I 7.0E-03 I 1 0.1 4.3E+02 n 2.5E+03 c** 9.6E+01 c** 7.8E+01Demeton 8065-48-3 4.0E-05 I 1 0.1 2.4E+00 n 2.5E+01 n 1.5E+00 nDi(2-ethylhexyl)adipate 103-23-1 1.2E-03 I 6.0E-01 I 1 0.1 4.0E+02 c* 1.4E+03 c 5.6E+01 c 4.0E+02 5.5E+00 3.9E+01Diallate 2303-16-4 6.1E-02 H 1 0.1 8.0E+00 c 2.8E+01 c 1.1E+00 c 2.5E-03Diazinon 333-41-5 7.0E-04 A 1 0.1 4.3E+01 n 4.3E+02 n 2.6E+01 n 7.3E-02Dibromo-3-chloropropane, 1,2- 96-12-8 8.0E-01 P 6.0E-03 P 2.0E-04 P 2.0E-04 I V M 1 1.1E+03 5.6E-03 c 7.3E-02 c 1.6E-04 c 2.0E-03 c 3.2E-04 c 2.0E-01 1.5E-07 9.2E-05Dibromobenzene, 1,4- 106-37-6 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 3.9E-01Dibromochloromethane 124-48-1 8.4E-02 I 2.7E-05 C 2.0E-02 I V 1 0.1 8.5E+02 7.0E-01 c 3.4E+00 c 9.0E-02 c 4.5E-01 c 1.5E-01 c 4.0E-05Dibromoethane, 1,2- 106-93-4 2.0E+00 I 6.0E-04 I 9.0E-03 I 9.0E-03 I V 1 1.4E+03 3.4E-02 c 1.7E-01 c 4.1E-03 c 2.0E-02 c 6.5E-03 c 5.0E-02 1.9E-06 1.5E-05Dibromomethane (Methylene Bromide) 74-95-3 1.0E-02 H V 1 3.0E+03 7.8E+02 n 1.0E+04 ns 3.7E+02 n 9.1E-02Dibutyl Phthalate 84-74-2 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 1.1E+01Dibutyltin Compounds NA 3.0E-04 P 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 nDicamba 1918-00-9 3.0E-02 I 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.8E-01Dichloro-2-butene, 1,4- 764-41-0 4.2E-03 P V 1 6.1E+02 2.0E-03 c 9.9E-03 c 5.8E-04 c 2.9E-03 c 1.2E-03 c 6.1E-07Dichloro-2-butene, cis-1,4- 1476-11-5 4.2E-03 P V 1 0.1 6.1E+02 2.1E-03 c 1.1E-02 c 5.8E-04 c 2.9E-03 c 1.2E-03 c 6.1E-07Dichloro-2-butene, trans-1,4- 110-57-6 4.2E-03 P V 1 0.1 5.8E+02 7.3E-03 c 3.7E-02 c 5.8E-04 c 2.9E-03 c 1.2E-03 c 5.8E-07Dichloroacetic Acid 79-43-6 5.0E-02 I 4.0E-03 I 1 0.1 9.7E+00 c* 3.4E+01 c* 1.3E+00 c 2.7E-04Dichlorobenzene, 1,2- 95-50-1 9.0E-02 I 2.0E-01 H V 1 2.2E+02 2.0E+03 ns 1.0E+04 ns 2.1E+02 n 8.8E+02 n 3.7E+02 n 6.0E+02 4.0E-01 6.6E-01Dichlorobenzene, 1,4- 106-46-7 5.4E-03 C 1.1E-05 C 7.0E-02 A 8.0E-01 I V 1 2.6E+00 c 1.3E+01 c 2.2E-01 c 1.1E+00 c 4.3E-01 c 7.5E+01 4.6E-04 8.1E-02Dichlorobenzidine, 3,3'- 91-94-1 4.5E-01 I 3.4E-04 C 1 0.1 1.1E+00 c 3.8E+00 c 7.2E-03 c 3.6E-02 c 1.5E-01 c 2.3E-03Dichlorodifluoromethane 75-71-8 2.0E-01 I 2.0E-01 H V 1 8.5E+02 1.9E+02 n 7.8E+02 n 2.1E+02 n 8.8E+02 n 3.9E+02 n 6.1E-01Dichloroethane, 1,1- 75-34-3 5.7E-03 C 1.6E-06 C 2.0E-01 P V 1 1.8E+03 3.4E+00 c 1.7E+01 c 1.5E+00 c 7.7E+00 c 2.4E+00 c 7.0E-04Dichloroethane, 1,2- 107-06-2 9.1E-02 I 2.6E-05 I 2.0E-02 P 2.4E+00 A V 1 1.9E+03 4.5E-01 c 2.2E+00 c 9.4E-02 c 4.7E-01 c 1.5E-01 c 5.0E+00 4.4E-05 1.5E-03Dichloroethylene, 1,1- 75-35-4 5.0E-02 I 2.0E-01 I V 1 1.2E+03 2.5E+02 n 1.1E+03 n 2.1E+02 n 8.8E+02 n 3.4E+02 n 7.0E+00 1.2E-01 2.6E-03Dichloroethylene, 1,2- (Mixed Isomers) 540-59-0 9.0E-03 H V 1 1.4E+03 7.0E+02 n 9.2E+03 ns 3.3E+02 n 9.9E-02Dichloroethylene, 1,2-cis- 156-59-2 1.0E-02 P V 1 1.4E+03 7.8E+02 n 1.0E+04 ns 3.7E+02 n 7.0E+01 1.1E-01 2.1E-02Dichloroethylene, 1,2-trans- 156-60-5 2.0E-02 I 6.0E-02 P V 1 1.5E+03 1.1E+02 n 5.0E+02 n 6.3E+01 n 2.6E+02 n 1.1E+02 n 1.0E+02 3.4E-02 3.2E-02Dichlorophenol, 2,4- 120-83-2 3.0E-03 I 1 0.1 1.8E+02 n 1.8E+03 n 1.1E+02 n 1.8E-01Dichlorophenoxy Acetic Acid, 2,4- 94-75-7 1.0E-02 I 1 0.05 6.9E+02 n 7.7E+03 n 3.7E+02 n 7.0E+01 9.4E-02 1.8E-02Dichlorophenoxy)butyric Acid, 4-(2,4- 94-82-6 8.0E-03 I 1 0.1 4.9E+02 n 4.9E+03 n 2.9E+02 n 1.2E-01Dichloropropane, 1,2- 78-87-5 3.6E-02 C 1.0E-05 C 9.0E-02 A 4.0E-03 I V 1 1.5E+03 9.3E-01 c* 4.7E+00 c* 2.4E-01 c* 1.2E+00 c* 3.9E-01 c* 5.0E+00 1.3E-04 1.7E-03Dichloropropane, 1,3- 142-28-9 2.0E-02 P V 1 1.6E+03 1.6E+03 n 2.0E+04 ns 7.3E+02 n 2.7E-01Dichloropropanol, 2,3- 616-23-9 3.0E-03 I 1 0.1 1.8E+02 n 1.8E+03 n 1.1E+02 n 2.3E-02Dichloropropene, 1,3- 542-75-6 1.0E-01 I 4.0E-06 I 3.0E-02 I 2.0E-02 I V 1 1.7E+03 1.7E+00 c* 8.4E+00 c* 6.1E-01 c* 3.1E+00 c* 4.3E-01 c* 1.6E-04Dichlorvos 62-73-7 2.9E-01 I 8.3E-05 C 5.0E-04 I 5.0E-04 I 1 0.1 1.7E+00 c* 5.9E+00 c* 2.9E-02 c* 1.5E-01 c* 2.3E-01 c* 6.5E-05Dicyclopentadiene 77-73-6 8.0E-03 P 7.0E-03 P V 1 5.9E+02 2.9E+01 n 1.3E+02 n 7.3E+00 n 3.1E+01 n 1.4E+01 n 5.6E-02Dieldrin 60-57-1 1.6E+01 I 4.6E-03 I 5.0E-05 I 1 0.1 3.0E-02 c 1.1E-01 c 5.3E-04 c 2.7E-03 c 4.2E-03 c 9.0E-05Diesel Engine Exhaust NA 3.0E-04 C 5.0E-03 I 1 0.1 8.1E-03 c 4.1E-02 cDiethyl Phthalate 84-66-2 8.0E-01 I 1 0.1 4.9E+04 n 4.9E+05 nm 2.9E+04 n 1.3E+01Diethylene Glycol Monobutyl Ether 112-34-5 1.0E-02 P 2.0E-02 P 1 0.1 6.1E+02 n 6.2E+03 n 2.1E+01 n 8.8E+01 n 3.7E+02 n 8.0E-02Diethylene Glycol Monoethyl Ether 111-90-0 6.0E-02 P 3.0E-03 P 1 0.1 3.7E+03 n 3.7E+04 n 3.1E+00 n 1.3E+01 n 2.2E+03 n 4.4E-01Diethylformamide 617-84-5 1.0E-03 P 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 8.0E-03Diethylstilbestrol 56-53-1 3.5E+02 C 1.0E-01 C 1 0.1 1.4E-03 c 4.9E-03 c 2.4E-05 c 1.2E-04 c 1.9E-04 c 2.2E-04Difenzoquat 43222-48-6 8.0E-02 I 1 0.1 4.9E+03 n 4.9E+04 n 2.9E+03 nDiflubenzuron 35367-38-5 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.7E+00Difluoroethane, 1,1- 75-37-6 4.0E+01 I V 1 1.5E+03 5.3E+04 ns 2.2E+05 nms 4.2E+04 n 1.8E+05 n 8.3E+04 n 2.9E+01Diisopropyl Ether 108-20-3 4.0E-01 P V 1 1.6E+03 1.2E+03 n 5.1E+03 ns 4.2E+02 n 1.8E+03 n 8.3E+02 n 1.9E-01Diisopropyl Methylphosphonate 1445-75-6 8.0E-02 I V 1 4.3E+02 6.3E+03 ns 8.2E+04 ns 2.9E+03 n 7.7E-01Dimethipin 55290-64-7 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.9E-01Dimethoate 60-51-5 2.0E-04 I 1 0.1 1.2E+01 n 1.2E+02 n 7.3E+00 n 1.8E-03Dimethoxybenzidine, 3,3'- 119-90-4 1.4E-02 H 1 0.1 3.5E+01 c 1.2E+02 c 4.8E+00 c 1.5E-02Page 3 of 9Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgKey: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey keyDimethyl methylphosphonate 756-79-6 1.7E-03 P 6.0E-02 P 1 0.1 2.9E+02 c* 1.0E+03 c* 4.0E+01 c* 8.2E-03Dimethylamino azobenzene [p-] 60-11-7 4.6E+00 C 1.3E-03 C 1 0.1 1.1E-01 c 3.7E-01 c 1.9E-03 c 9.4E-03 c 1.5E-02 c 3.0E-05Dimethylaniline HCl, 2,4- 21436-96-4 5.8E-01 H 1 0.1 8.4E-01 c 3.0E+00 c 1.2E-01 c 5.1E-05Dimethylaniline, 2,4- 95-68-1 7.5E-01 H 1 0.1 6.5E-01 c 2.3E+00 c 9.0E-02 c 3.9E-05Dimethylaniline, N,N- 121-69-7 2.0E-03 I V 1 8.2E+02 1.6E+02 n 2.0E+03 ns 7.3E+01 n 2.6E-02Dimethylbenzidine, 3,3'- 119-93-7 1.1E+01 P 1 0.1 4.4E-02 c 1.6E-01 c 6.1E-03 c 9.3E-05Dimethylformamide 68-12-2 1.0E-01 P 3.0E-02 I 1 0.1 6.1E+03 n 6.2E+04 n 3.1E+01 n 1.3E+02 n 3.7E+03 n 7.5E-01Dimethylhydrazine, 1,2- 540-73-8 5.5E+02 C 1.6E-01 C 1 0.1 8.8E-04 c 3.1E-03 c 1.5E-05 c 7.7E-05 c 1.2E-04 c 3.0E-08Dimethylphenol, 2,4- 105-67-9 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.2E+00Dimethylphenol, 2,6- 576-26-1 6.0E-04 I 1 0.1 3.7E+01 n 3.7E+02 n 2.2E+01 n 3.6E-02Dimethylphenol, 3,4- 95-65-8 1.0E-03 I 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 6.0E-02Dimethylterephthalate 120-61-6 1.0E-01 I V 1 6.1E+00 7.8E+03 ns 1.0E+05 nms 3.7E+03 n 1.0E+00Dinitro-o-cresol, 4,6- 534-52-1 1.0E-04 P 1 0.1 6.1E+00 n 6.2E+01 n 3.7E+00 n 5.1E-03Dinitro-o-cyclohexyl Phenol, 4,6- 131-89-5 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 2.1E+00Dinitrobenzene, 1,2- 528-29-0 1.0E-04 P 1 0.1 6.1E+00 n 6.2E+01 n 3.7E+00 n 2.4E-03Dinitrobenzene, 1,3- 99-65-0 1.0E-04 I 1 0.1 6.1E+00 n 6.2E+01 n 3.7E+00 n 2.3E-03Dinitrobenzene, 1,4- 100-25-4 1.0E-04 P 1 0.1 6.1E+00 n 6.2E+01 n 3.7E+00 n 2.3E-03Dinitrophenol, 2,4- 51-28-5 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 6.8E-02Dinitrotoluene Mixture, 2,4/2,6- 25321-14-6 6.8E-01 I 1 0.1 7.1E-01 c 2.5E+00 c 9.9E-02 c 9.3E-05Dinitrotoluene, 2,4- 121-14-2 3.1E-01 C 8.9E-05 C 2.0E-03 I 1 0.102 1.6E+00 c* 5.5E+00 c 2.7E-02 c 1.4E-01 c 2.2E-01 c 2.0E-04Dinitrotoluene, 2,6- 606-20-2 1.0E-03 P 1 0.099 6.1E+01 n 6.2E+02 n 3.7E+01 n 3.4E-02Dinitrotoluene, 2-Amino-4,6- 35572-78-2 2.0E-03 I 1 0.006 1.5E+02 n 2.0E+03 n 7.3E+01 n 2.9E-02Dinitrotoluene, 4-Amino-2,6- 19406-51-0 2.0E-03 I 1 0.009 1.5E+02 n 1.9E+03 n 7.3E+01 n 2.9E-02Dinoseb 88-85-7 1.0E-03 I 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 7.0E+00 2.7E-01 5.1E-02Dioxane, 1,4- 123-91-1 1.1E-02 I 7.7E-06 C 1.0E-01 A 3.6E+00 A 1 0.1 4.4E+01 c 1.6E+02 c 3.2E-01 c 1.6E+00 c 6.1E+00 c 1.2E-03Dioxins~Hexachlorodibenzo-p-dioxin, Mixture NA 6.2E+03 I 1.3E+00 I 1 0.03 9.4E-05 c 3.9E-04 c 1.9E-06 c 9.4E-06 c 1.1E-05 c 9.0E-06~TCDD, 2,3,7,8- 1746-01-6 1.3E+05 C 3.8E+01 C 1.0E-09 A 4.0E-08 C 1 0.03 4.5E-06 c* 1.8E-05 c* 6.4E-08 c 3.2E-07 c 5.2E-07 c* 3.0E-05 1.5E-07 8.8E-06Diphenamid 957-51-7 3.0E-02 I 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 3.4E+01Diphenyl Sulfone 127-63-9 3.0E-03 P 1 0.1 1.8E+02 n 1.8E+03 n 1.1E+02 n 6.6E-01Diphenylamine 122-39-4 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 3.6E+00Diphenylhydrazine, 1,2- 122-66-7 8.0E-01 I 2.2E-04 I 1 0.1 6.1E-01 c 2.2E+00 c 1.1E-02 c 5.6E-02 c 8.4E-02 c 6.0E-04Diquat 85-00-7 2.2E-03 I 1 0.1 1.3E+02 n 1.4E+03 n 8.0E+01 n 2.0E+01 3.3E-01 8.1E-02Direct Black 38 1937-37-7 7.4E+00 C 2.1E-03 C 1 0.1 6.6E-02 c 2.3E-01 c 1.2E-03 c 5.8E-03 c 9.1E-03 c 1.4E+00Direct Blue 6 2602-46-2 7.4E+00 C 2.1E-03 C 1 0.1 6.6E-02 c 2.3E-01 c 1.2E-03 c 5.8E-03 c 9.1E-03 c 4.0E+00Direct Brown 95 16071-86-6 6.7E+00 C 1.9E-03 C 1 0.1 7.2E-02 c 2.6E-01 c 1.3E-03 c 6.5E-03 c 1.0E-02 cDisulfoton 298-04-4 4.0E-05 I 1 0.1 2.4E+00 n 2.5E+01 n 1.5E+00 n 2.7E-03Dithiane, 1,4- 505-29-3 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.9E-01Diuron 330-54-1 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 3.4E-02Dodine 2439-10-3 4.0E-03 I 1 0.1 2.4E+02 n 2.5E+03 n 1.5E+02 n 4.5E+00EPTC 759-94-4 2.5E-02 I V 1 6.2E+02 2.0E+03 ns 2.6E+04 ns 9.1E+02 n 6.5E-01Endosulfan 115-29-7 6.0E-03 I 1 0.1 3.7E+02 n 3.7E+03 n 2.2E+02 n 9.7E+00Endothall 145-73-3 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.0E+02 1.6E-01 2.2E-02Endrin 72-20-8 3.0E-04 I 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 2.0E+00 2.3E-01 4.3E-02Epichlorohydrin 106-89-8 9.9E-03 I 1.2E-06 I 6.0E-03 P 1.0E-03 I V 1 8.4E+03 1.8E+01 n 7.7E+01 n 1.0E+00 n 4.4E+00 n 2.1E+00 n 4.3E-04Epoxybutane, 1,2- 106-88-7 2.0E-02 I V 1 1.2E+04 1.5E+02 n 6.4E+02 n 2.1E+01 n 8.8E+01 n 4.2E+01 n 8.7E-03Ethephon 16672-87-0 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 3.8E-02Ethion 563-12-2 5.0E-04 I 1 0.1 3.1E+01 n 3.1E+02 n 1.8E+01 n 4.8E-01Ethoxyethanol Acetate, 2- 111-15-9 3.0E-01 H 3.0E-01 C 1 0.1 1.8E+04 n 1.8E+05 nm 3.1E+02 n 1.3E+03 n 1.1E+04 n 2.2E+00Ethoxyethanol, 2- 110-80-5 4.0E-01 H 2.0E-01 I 1 0.1 2.4E+04 n 2.5E+05 nm 2.1E+02 n 8.8E+02 n 1.5E+04 n 2.9E+00Ethyl Acetate 141-78-6 9.0E-01 I V 1 1.1E+04 7.0E+04 ns 9.2E+05 nms 3.3E+04 n 7.0E+00Ethyl Acrylate 140-88-5 4.8E-02 H V 1 2.6E+03 1.3E+01 c 6.0E+01 c 1.4E+00 c 3.2E-04Ethyl Chloride 75-00-3 1.0E+01 I V 1 2.2E+03 1.5E+04 ns 6.2E+04 ns 1.0E+04 n 4.4E+04 n 2.1E+04 n 6.0E+00Ethyl Ether 60-29-7 2.0E-01 I V 1 8.2E+03 1.6E+04 ns 2.0E+05 nms 7.3E+03 n 1.6E+00Ethyl Methacrylate 97-63-2 9.0E-02 H V 1 1.2E+03 7.0E+03 ns 9.2E+04 ns 3.3E+03 n 7.9E-01Ethyl-p-nitrophenyl Phosphonate 2104-64-5 1.0E-05 I 1 0.1 6.1E-01 n 6.2E+00 n 3.7E-01 n 8.7E-03Ethylbenzene 100-41-4 1.1E-02 C 2.5E-06 C 1.0E-01 I 1.0E+00 I V 1 5.5E+02 5.7E+00 c 2.9E+01 c 9.7E-01 c 4.9E+00 c 1.5E+00 c 7.0E+02 1.9E-03 8.9E-01Ethylene Cyanohydrin 109-78-4 3.0E-02 P 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.2E-01Ethylene Diamine 107-15-3 9.0E-02 P 1 0.1 5.5E+03 n 5.5E+04 n 3.3E+03 n 8.2E-01Ethylene Glycol 107-21-1 2.0E+00 I 4.0E-01 C 1 0.1 1.2E+05 nm 1.2E+06 nm 4.2E+02 n 1.8E+03 n 7.3E+04 n 1.5E+01Ethylene Glycol Monobutyl Ether 111-76-2 5.0E-01 I 1.3E+01 I 1 0.1 3.1E+04 n 3.1E+05 nm 1.4E+04 n 5.7E+04 n 1.8E+04 n 3.7E+00Ethylene Oxide 75-21-8 3.1E-01 C 8.8E-05 C 3.0E-02 C V 1 1.1E+05 1.6E-01 c 8.0E-01 c 2.8E-02 c 1.4E-01 c 4.4E-02 c 9.0E-06Ethylene Thiourea 96-45-7 4.5E-02 C 1.3E-05 C 8.0E-05 I 1 0.1 4.9E+00 n 3.8E+01 c** 1.9E-01 c 9.4E-01 c 1.5E+00 c** 3.2E-04Ethylphthalyl Ethyl Glycolate 84-72-0 3.0E+00 I 1 0.1 1.8E+05 nm 1.8E+06 nm 1.1E+05 n 3.0E+02Express 101200-48-0 8.0E-03 I 1 0.1 4.9E+02 n 4.9E+03 n 2.9E+02 n 1.1E-01Fenamiphos 22224-92-6 2.5E-04 I 1 0.1 1.5E+01 n 1.5E+02 n 9.1E+00 n 5.9E-03Fenpropathrin 39515-41-8 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 5.4E+01Fluometuron 2164-17-2 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 4.4E-01Fluorine (Soluble Fluoride) 7782-41-4 6.0E-02 I 1 4.7E+03 n 6.1E+04 n 2.2E+03 n 4.0E+03 3.3E+02 6.0E+02Fluridone 59756-60-4 8.0E-02 I 1 0.1 4.9E+03 n 4.9E+04 n 2.9E+03 n 6.5E+02Flurprimidol 56425-91-3 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.4E+00Flutolanil 66332-96-5 6.0E-02 I 1 0.1 3.7E+03 n 3.7E+04 n 2.2E+03 n 2.4E+01Fluvalinate 69409-94-5 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 5.3E+02Folpet 133-07-3 3.5E-03 I 1.0E-01 I 1 0.1 1.4E+02 c* 4.9E+02 c 1.9E+01 c 9.4E-03Fomesafen 72178-02-0 1.9E-01 I 1 0.1 2.6E+00 c 9.1E+00 c 3.5E-01 c 7.9E-03Fonofos 944-22-9 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 1.4E-01Formaldehyde 50-00-0 1.3E-05 I 2.0E-01 I 9.8E-03 A 1 0.1 1.2E+04 n 1.2E+05 nm 1.9E-01 c* 9.4E-01 c* 7.3E+03 n 1.5E+00Page 4 of 9Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgKey: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey keyFormic Acid 64-18-6 2.0E+00 H 3.0E-03 P 1 0.1 1.2E+05 nm 1.2E+06 nm 3.1E+00 n 1.3E+01 n 7.3E+04 n 1.5E+01Fosetyl-AL 39148-24-8 3.0E+00 I 1 0.1 1.8E+05 nm 1.8E+06 nm 1.1E+05 nFurans~Furan 110-00-9 1.0E-03 I V 1 6.8E+03 7.8E+01 n 1.0E+03 n 3.7E+01 n 1.5E-02Furazolidone 67-45-8 3.8E+00 H 1 0.1 1.3E-01 c 4.5E-01 c 1.8E-02 c 3.3E-05Furfural 98-01-1 3.0E-03 I 5.0E-02 H 1 0.1 1.8E+02 n 1.8E+03 n 5.2E+01 n 2.2E+02 n 1.1E+02 n 2.6E-02Furium 531-82-8 1.5E+00 C 4.3E-04 C 1 0.1 3.2E-01 c 1.1E+00 c 5.7E-03 c 2.9E-02 c 4.5E-02 c 5.3E-05Furmecyclox 60568-05-0 3.0E-02 I 8.6E-06 C 1 0.1 1.6E+01 c 5.7E+01 c 2.8E-01 c 1.4E+00 c 2.2E+00 c 7.4E-03Glufosinate, Ammonium 77182-82-2 4.0E-04 I 1 0.1 2.4E+01 n 2.5E+02 n 1.5E+01 n 4.7E-03Glycidyl 765-34-4 4.0E-04 I 1.0E-03 H 1 0.1 2.4E+01 n 2.5E+02 n 1.0E+00 n 4.4E+00 n 1.5E+01 n 2.9E-03Glyphosate 1071-83-6 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 7.0E+02 8.7E-01 1.7E-01Goal 42874-03-3 3.0E-03 I 1 0.1 1.8E+02 n 1.8E+03 n 1.1E+02 n 1.0E+01Guthion 86-50-0 3.0E-03 A 1.0E-02 A 1 0.1 1.8E+02 n 1.8E+03 n 1.0E+01 n 4.4E+01 n 1.1E+02 n 3.7E-02Haloxyfop, Methyl 69806-40-2 5.0E-05 I 1 0.1 3.1E+00 n 3.1E+01 n 1.8E+00 n 6.5E-02Harmony 79277-27-3 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.3E-01Heptachlor 76-44-8 4.5E+00 I 1.3E-03 I 5.0E-04 I 1 0.1 1.1E-01 c 3.8E-01 c 1.9E-03 c 9.4E-03 c 1.5E-02 c 4.0E-01 1.6E-03 4.2E-02Heptachlor Epoxide 1024-57-3 9.1E+00 I 2.6E-03 I 1.3E-05 I 1 0.1 5.3E-02 c* 1.9E-01 c* 9.4E-04 c 4.7E-03 c 7.4E-03 c* 2.0E-01 7.9E-05 2.1E-03Hexabromobenzene 87-82-1 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 5.1E-01Hexabromodiphenyl ether, 2,2',4,4',5,5'- (BDE-153) 68631-49-2 2.0E-04 I 1.6E+01 n 2.0E+02 n 7.3E+00 nHexachlorobenzene 118-74-1 1.6E+00 I 4.6E-04 I 8.0E-04 I 1 0.1 3.0E-01 c 1.1E+00 c 5.3E-03 c 2.7E-02 c 4.2E-02 c 1.0E+00 2.9E-04 7.0E-03Hexachlorobutadiene 87-68-3 7.8E-02 I 2.2E-05 I 1.0E-03 P 1 0.1 6.2E+00 c** 2.2E+01 c* 1.1E-01 c 5.6E-01 c 8.6E-01 c* 1.9E-03Hexachlorocyclohexane, Alpha- 319-84-6 6.3E+00 I 1.8E-03 I 8.0E-03 A 1 0.1 7.7E-02 c 2.7E-01 c 1.4E-03 c 6.8E-03 c 1.1E-02 c 7.4E-05Hexachlorocyclohexane, Beta- 319-85-7 1.8E+00 I 5.3E-04 I 1 0.1 2.7E-01 c 9.6E-01 c 4.6E-03 c 2.3E-02 c 3.7E-02 c 2.6E-04Hexachlorocyclohexane, Gamma- (Lindane) 58-89-9 1.1E+00 C 3.1E-04 C 3.0E-04 I 1 0.04 5.2E-01 c* 2.1E+00 c 7.8E-03 c 4.0E-02 c 6.1E-02 c 2.0E-01 4.3E-04 1.4E-03Hexachlorocyclohexane, Technical 608-73-1 1.8E+00 I 5.1E-04 I 1 0.1 2.7E-01 c 9.6E-01 c 4.8E-03 c 2.4E-02 c 3.7E-02 c 2.6E-04Hexachlorocyclopentadiene 77-47-4 6.0E-03 I 2.0E-04 I 1 0.1 3.7E+02 n 3.7E+03 n 2.1E-01 n 8.8E-01 n 2.2E+02 n 5.0E+01 8.0E-01 1.8E-01Hexachloroethane 67-72-1 1.4E-02 I 4.0E-06 I 1.0E-03 I 1 0.1 3.5E+01 c** 1.2E+02 c** 6.1E-01 c 3.1E+00 c 4.8E+00 c** 3.2E-03Hexachlorophene 70-30-4 3.0E-04 I 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 1.4E+01Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) 121-82-4 1.1E-01 I 3.0E-03 I 1 0.015 5.5E+00 c* 2.4E+01 c 6.1E-01 c 3.6E-04Hexamethylene Diisocyanate, 1,6- 822-06-0 1.0E-05 I V 1 4.1E+03 3.7E+00 n 1.6E+01 n 1.0E-02 n 4.4E-02 n 2.1E-02 n 2.5E-04Hexane, N- 110-54-3 6.0E-02 H 7.0E-01 I V 1 1.4E+02 5.7E+02 ns 2.6E+03 ns 7.3E+02 n 3.1E+03 n 8.8E+02 n 6.2E+00Hexanedioic Acid 124-04-9 2.0E+00 P 1 0.1 1.2E+05 nm 1.2E+06 nm 7.3E+04 n 1.8E+01Hexazinone 51235-04-2 3.3E-02 I 1 0.1 2.0E+03 n 2.0E+04 n 1.2E+03 n 1.7E+00Hydrazine 302-01-2 3.0E+00 I 4.9E-03 I 2.0E-04 C 1 2.1E-01 c 9.5E-01 c 5.0E-04 c 2.5E-03 c 2.2E-02 cHydrazine Sulfate 10034-93-2 3.0E+00 I 4.9E-03 I 1 2.1E-01 c 9.5E-01 c 5.0E-04 c 2.5E-03 c 2.2E-02 cHydrogen Chloride 7647-01-0 2.0E-02 I 1 2.8E+07 nm 1.2E+08 nm 2.1E+01 n 8.8E+01 nHydrogen Fluoride 7664-39-3 4.0E-02 C 1.4E-02 C 1 3.1E+03 n 4.1E+04 n 1.5E+01 n 6.1E+01 n 1.5E+03 nHydrogen Sulfide 7783-06-4 2.0E-03 I 1 2.8E+06 nm 1.2E+07 nm 2.1E+00 n 8.8E+00 nHydroquinone 123-31-9 5.6E-02 P 4.0E-02 P 1 0.1 8.7E+00 c 3.1E+01 c 1.2E+00 c 1.3E-03Imazalil 35554-44-0 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.9E+00Imazaquin 81335-37-7 2.5E-01 I 1 0.1 1.5E+04 n 1.5E+05 nm 9.1E+03 n 9.2E+01Iodine 7553-56-2 1.0E-02 A 7.8E+02 n 1.0E+04 n 3.7E+02 nIprodione 36734-19-7 4.0E-02 I 1 0.1 2.4E+03 n 2.5E+04 n 1.5E+03 n 7.0E-01Iron 7439-89-6 7.0E-01 P 1 5.5E+04 n 7.2E+05 nm 2.6E+04 n 6.4E+02Isobutyl Alcohol 78-83-1 3.0E-01 I V 1 9.6E+03 2.3E+04 ns 3.1E+05 nms 1.1E+04 n 2.2E+00Isophorone 78-59-1 9.5E-04 I 2.0E-01 I 2.0E+00 C 1 0.1 5.1E+02 c* 1.8E+03 c* 2.1E+03 n 8.8E+03 n 7.1E+01 c 2.2E-02Isopropalin 33820-53-0 1.5E-02 I 1 0.1 9.2E+02 n 9.2E+03 n 5.5E+02 n 7.4E+00Isopropanol 67-63-0 7.0E+00 C 1 0.1 9.9E+09 nm 4.2E+10 nm 7.3E+03 n 3.1E+04 nIsopropyl Methyl Phosphonic Acid 1832-54-8 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 7.7E-01Isoxaben 82558-50-7 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.1E+01JP-7 NA 3.0E-01 A V 1 4.3E+08 nm 1.8E+09 nm 3.1E+02 n 1.3E+03 n 6.3E+02 nKerb 23950-58-5 7.5E-02 I 1 0.1 4.6E+03 n 4.6E+04 n 2.7E+03 n 9.2E+00Lactofen 77501-63-4 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 3.7E+00Lead Compounds~Lead and Compounds 7439-92-11 4.0E+02 nL 8.0E+02 nL 1.5E+01~Tetraethyl Lead 78-00-2 1.0E-07 I 1 0.1 6.1E-03 n 6.2E-02 n 3.7E-03 n 1.4E-05Linuron 330-55-2 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 6.6E-02Lithium 7439-93-2 2.0E-03 P 1 1.6E+02 n 2.0E+03 n 7.3E+01 n 2.2E+01Lithium Perchlorate 7791-03-9 7.0E-04 I 1 5.5E+01 n 7.2E+02 n 2.6E+01 nLondax 83055-99-6 2.0E-01 I 1 0.1 1.2E+04 n 1.2E+05 nm 7.3E+03 n 1.9E+00MCPA 94-74-6 5.0E-04 I 1 0.1 3.1E+01 n 3.1E+02 n 1.8E+01 n 4.7E-03MCPB 94-81-5 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.5E-01MCPP 93-65-2 1.0E-03 I 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 1.1E-02Malathion 121-75-5 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.9E-01Maleic Anhydride 108-31-6 1.0E-01 I 7.0E-04 C 1 0.1 6.1E+03 n 6.1E+04 n 7.3E-01 n 3.1E+00 n 3.7E+03 n 7.4E-01Maleic Hydrazide 123-33-1 5.0E-01 I 1 0.1 3.1E+04 n 3.1E+05 nm 1.8E+04 n 4.0E+00Malononitrile 109-77-3 1.0E-04 P 1 0.1 6.1E+00 n 6.2E+01 n 3.7E+00 n 8.4E-04Mancozeb 8018-01-7 3.0E-02 H 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.4E-01Maneb 12427-38-2 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 4.0E-02Manganese (Diet) 7439-96-5 1.4E-01 I 5.0E-05 I 1Manganese (Water) 7439-96-5 2.4E-02 I 5.0E-05 I 0.04 1.8E+03 n 2.3E+04 n 5.2E-02 n 2.2E-01 n 8.8E+02 n 5.7E+01Mephosfolan 950-10-7 9.0E-05 H 1 0.1 5.5E+00 n 5.5E+01 n 3.3E+00 n 3.9E-03Mepiquat Chloride 24307-26-4 3.0E-02 I 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 6.0E-01Mercury Compounds~Mercuric Chloride 7487-94-7 3.0E-04 I 0.07 2.3E+01 n 3.1E+02 n 1.1E+01 n~Mercuric Sulfide 1344-48-5 3.0E-04 I 1 2.3E+01 n 3.1E+02 n 1.1E+01 n~Mercury (elemental) 7439-97-6 1.6E-04 C 3.0E-04 I V 1 3.1E+00 4.3E+00 ns 2.4E+01 ns 3.1E-01 n 1.3E+00 n 5.7E-01 n 2.0E+00 3.0E-02 1.0E-01Page 5 of 9Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgKey: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey key~Mercury, Inorganic Salts NA 3.0E-04 I 0.07 2.3E+01 n 3.1E+02 n 1.1E+01 n 5.7E-01~Methyl Mercury 22967-92-6 1.0E-04 I 1 7.8E+00 n 1.0E+02 n 3.7E+00 n~Phenylmercuric Acetate 62-38-4 8.0E-05 I 1 0.1 4.9E+00 n 4.9E+01 n 2.9E+00 n 1.6E-03Merphos 150-50-5 3.0E-05 I 1 0.1 1.8E+00 n 1.8E+01 n 1.1E+00 n 1.4E-01Merphos Oxide 78-48-8 3.0E-05 I 1 0.1 1.8E+00 n 1.8E+01 n 1.1E+00 n 4.4E-03Metalaxyl 57837-19-1 6.0E-02 I 1 0.1 3.7E+03 n 3.7E+04 n 2.2E+03 n 5.4E-01Methacrylonitrile 126-98-7 1.0E-04 I 7.0E-04 H V 1 4.5E+03 3.2E+00 n 1.8E+01 n 7.3E-01 n 3.1E+00 n 1.0E+00 n 2.4E-04Methamidophos 10265-92-6 5.0E-05 I 1 0.1 3.1E+00 n 3.1E+01 n 1.8E+00 n 3.8E-04Methanol 67-56-1 5.0E-01 I 4.0E+00 C 1 0.1 3.1E+04 n 3.1E+05 nm 4.2E+03 n 1.8E+04 n 1.8E+04 n 3.7E+00Methidathion 950-37-8 1.0E-03 I 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 8.0E-03Methomyl 16752-77-5 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 2.0E-01Methoxy-5-nitroaniline, 2- 99-59-2 4.9E-02 C 1.4E-05 C 1 0.1 9.9E+00 c 3.5E+01 c 1.7E-01 c 8.8E-01 c 1.4E+00 c 3.8E-04Methoxychlor 72-43-5 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 4.0E+01 1.6E+01 3.4E+00Methoxyethanol Acetate, 2- 110-49-6 2.0E-03 H 9.0E-02 C 1 0.1 1.2E+02 n 1.2E+03 n 9.4E+01 n 3.9E+02 n 7.3E+01 n 1.5E-02Methoxyethanol, 2- 109-86-4 3.0E-03 P 2.0E-02 I 1 0.1 1.8E+02 n 1.8E+03 n 2.1E+01 n 8.8E+01 n 1.1E+02 n 2.2E-02Methyl Acetate 79-20-9 1.0E+00 H V 1 2.9E+04 7.8E+04 ns 1.0E+06 nms 3.7E+04 n 7.6E+00Methyl Acrylate 96-33-3 3.0E-02 H V 1 6.9E+03 2.3E+03 n 3.1E+04 ns 1.1E+03 n 2.3E-01Methyl Ethyl Ketone (2-Butanone) 78-93-3 6.0E-01 I 5.0E+00 I V 1 2.8E+04 2.8E+04 ns 1.9E+05 nms 5.2E+03 n 2.2E+04 n 7.1E+03 n 1.5E+00Methyl Isobutyl Ketone (4-methyl-2-pentanone) 108-10-1 8.0E-02 H 3.0E+00 I V 1 3.2E+03 5.3E+03 ns 5.2E+04 ns 3.1E+03 n 1.3E+04 n 2.0E+03 n 4.4E-01Methyl Methacrylate 80-62-6 1.4E+00 I 7.0E-01 I V 1 2.5E+03 4.7E+03 ns 2.0E+04 ns 7.3E+02 n 3.1E+03 n 1.4E+03 n 3.1E-01Methyl Parathion 298-00-0 2.5E-04 I 1 0.1 1.5E+01 n 1.5E+02 n 9.1E+00 n 1.1E-02Methyl Phosphonic Acid 993-13-5 2.0E-02 P 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.5E-01Methyl Styrene (Mixed Isomers) 25013-15-4 6.0E-03 H 4.0E-02 H V 1 4.5E+02 1.9E+02 n 1.1E+03 ns 4.2E+01 n 1.8E+02 n 6.0E+01 n 1.1E-01Methyl methanesulfonate 66-27-3 9.9E-02 C 2.8E-05 C 1 0.1 4.9E+00 c 1.7E+01 c 8.7E-02 c 4.4E-01 c 6.8E-01 c 1.5E-04Methyl tert-Butyl Ether (MTBE) 1634-04-4 1.8E-03 C 2.6E-07 C 3.0E+00 I V 1 6.9E+03 3.9E+01 c 1.9E+02 c 9.4E+00 c 4.7E+01 c 1.2E+01 c 2.7E-03Methyl-5-Nitroaniline, 2- 99-55-8 3.3E-02 H 1 0.1 1.5E+01 c 5.2E+01 c 2.0E+00 c 7.6E-04Methylaniline Hydrochloride, 2- 636-21-5 1.3E-01 C 3.7E-05 C 1 0.1 3.7E+00 c 1.3E+01 c 6.6E-02 c 3.3E-01 c 5.2E-01 c 1.8E-04Methylarsonic acid 124-58-3 1.0E-02 A 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 nMethylcholanthrene, 3- 56-49-5 2.2E+01 C 6.3E-03 C 1 0.1 2.2E-02 c 7.8E-02 c 3.9E-04 c 1.9E-03 c 3.1E-03 c 8.0E-03Methylene Chloride 75-09-2 7.5E-03 I 4.7E-07 I 6.0E-02 I 1.0E+00 A V 1 3.5E+03 1.1E+01 c 5.4E+01 c 5.2E+00 c 2.6E+01 c 4.8E+00 c 5.0E+00 1.2E-03 1.3E-03Methylene-bis(2-chloroaniline), 4,4'- 101-14-4 1.0E-01 P 4.3E-04 C 2.0E-03 P M 1 0.1 1.2E+00 c 1.7E+01 c* 2.2E-03 c 2.9E-02 c 2.2E-01 c 5.9E-03Methylene-bis(N,N-dimethyl) Aniline, 4,4'- 101-61-1 4.6E-02 I 1.3E-05 C 1 0.1 1.1E+01 c 3.7E+01 c 1.9E-01 c 9.4E-01 c 1.5E+00 c 4.3E-02Methylenebisbenzenamine, 4,4'- 101-77-9 1.6E+00 C 4.6E-04 C 2.0E-02 C 1 0.1 3.0E-01 c 1.1E+00 c 5.3E-03 c 2.7E-02 c 4.2E-02 c 4.2E-04Methylenediphenyl Diisocyanate 101-68-8 6.0E-04 I 1 0.1 8.5E+05 nm 3.6E+06 nm 6.3E-01 n 2.6E+00 nMethylstyrene, Alpha- 98-83-9 7.0E-02 H V 1 4.5E+02 5.5E+03 ns 7.2E+04 ns 2.6E+03 n 4.7E+00Metolachlor 51218-45-2 1.5E-01 I 1 0.1 9.2E+03 n 9.2E+04 n 5.5E+03 n 4.3E+00Metribuzin 21087-64-9 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 2.4E+00Mirex 2385-85-5 1.8E+01 C 5.1E-03 C 2.0E-04 I 1 0.1 2.7E-02 c 9.6E-02 c 4.8E-04 c 2.4E-03 c 3.7E-03 c 3.5E-03Molinate 2212-67-1 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 5.6E-02Molybdenum 7439-98-7 5.0E-03 I 1 3.9E+02 n 5.1E+03 n 1.8E+02 n 3.7E+00Monochloramine 10599-90-3 1.0E-01 I 1 7.8E+03 n 1.0E+05 nm 3.7E+03 nMonomethylaniline 100-61-8 2.0E-03 P 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 2.4E-02N,N'-Diphenyl-1,4-benzenediamine 74-31-7 3.0E-04 P 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 2.8E+00Naled 300-76-5 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 2.9E-02Naphthylamine, 2- 91-59-8 1.8E+00 C 0.0E+00 C 1 0.1 2.7E-01 c 9.6E-01 c 3.7E-02 c 2.3E-04Napropamide 15299-99-7 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 8.5E+01Nickel Refinery Dust NA 2.4E-04 I 0.04 1.4E+04 c 6.9E+04 c 1.0E-02 c 5.1E-02 cNickel Soluble Salts 7440-02-0 2.6E-04 C 2.0E-02 I 9.0E-05 A 0.04 1.5E+03 n 2.0E+04 n 9.4E-03 c* 4.7E-02 c** 7.3E+02 n 4.8E+01Nickel Subsulfide 12035-72-2 1.7E+00 C 4.8E-04 I 0.04 3.8E-01 c 1.7E+00 c 5.1E-03 c 2.6E-02 c 4.0E-02 cNitrate 14797-55-8 1.6E+00 I 1 1.3E+05 nm 1.6E+06 nm 5.8E+04 n 1.0E+04Nitrite 14797-65-0 1.0E-01 I 1 7.8E+03 n 1.0E+05 nm 3.7E+03 n 1.0E+03Nitroaniline, 2- 88-74-4 3.0E-03 P 1.0E-04 P 1 0.1 1.8E+02 n 1.8E+03 n 1.0E-01 n 4.4E-01 n 1.1E+02 n 3.3E-02Nitroaniline, 4- 100-01-6 2.0E-02 P 4.0E-03 P 6.0E-03 P 1 0.1 2.4E+01 c* 8.6E+01 c* 6.3E+00 n 2.6E+01 n 3.4E+00 c* 1.0E-03Nitrobenzene 98-95-3 4.0E-05 I 2.0E-03 I 9.0E-03 I V 1 2.6E+03 4.4E+00 c* 2.2E+01 c* 6.1E-02 c 3.1E-01 c 1.2E-01 c 7.1E-05Nitrofurantoin 67-20-9 7.0E-02 H 1 0.1 4.3E+03 n 4.3E+04 n 2.6E+03 n 1.9E+00Nitrofurazone 59-87-0 1.3E+00 C 3.7E-04 C 1 0.1 3.7E-01 c 1.3E+00 c 6.6E-03 c 3.3E-02 c 5.2E-02 c 4.9E-05Nitroglycerin 55-63-0 1.7E-02 P 1.0E-04 P 1 0.1 6.1E+00 n 6.2E+01 n 3.7E+00 n 1.7E-03Nitroguanidine 556-88-7 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 9.2E-01Nitromethane 75-52-5 9.0E-06 P 2.0E-02 P V 1 1.7E+04 4.7E+00 c* 2.4E+01 c* 2.7E-01 c* 1.4E+00 c* 5.4E-01 c* 1.2E-04Nitropropane, 2- 79-46-9 2.7E-03 H 2.0E-02 I V 1 4.3E+03 1.2E-02 c 6.0E-02 c 9.0E-04 c 4.5E-03 c 1.8E-03 c 4.5E-07Nitroso-N-ethylurea, N- 759-73-9 2.7E+01 C 7.7E-03 C 1 0.1 1.8E-02 c 6.4E-02 c 3.2E-04 c 1.6E-03 c 2.5E-03 c 6.8E-07Nitroso-N-methylurea, N- 684-93-5 1.2E+02 C 3.4E-02 C 1 0.1 4.0E-03 c 1.4E-02 c 7.2E-05 c 3.6E-04 c 5.6E-04 c 1.3E-07Nitroso-di-N-butylamine, N- 924-16-3 5.4E+00 I 1.6E-03 I V 1 1.3E+04 9.3E-02 c 4.3E-01 c 1.5E-03 c 7.7E-03 c 2.4E-03 c 8.6E-06Nitroso-di-N-propylamine, N- 621-64-7 7.0E+00 I 2.0E-03 C 1 0.1 6.9E-02 c 2.5E-01 c 1.2E-03 c 6.1E-03 c 9.6E-03 c 1.1E-05Nitrosodiethanolamine, N- 1116-54-7 2.8E+00 I 8.0E-04 C 1 0.1 1.7E-01 c 6.2E-01 c 3.0E-03 c 1.5E-02 c 2.4E-02 c 4.9E-06Nitrosodiethylamine, N- 55-18-5 1.5E+02 I 4.3E-02 I M 1 0.1 7.7E-04 c 1.1E-02 c 2.2E-05 c 2.9E-04 c 1.4E-04 c 7.0E-08Nitrosodimethylamine, N- 62-75-9 5.1E+01 I 1.4E-02 I 8.0E-06 P M 1 0.1 2.3E-03 c 3.4E-02 c 6.9E-05 c 8.8E-04 c 4.2E-04 c 1.2E-07Nitrosodiphenylamine, N- 86-30-6 4.9E-03 I 2.6E-06 C 1 0.1 9.9E+01 c 3.5E+02 c 9.4E-01 c 4.7E+00 c 1.4E+01 c 1.7E-01Nitrosomethylethylamine, N- 10595-95-6 2.2E+01 I 6.3E-03 C 1 0.1 2.2E-02 c 7.8E-02 c 3.9E-04 c 1.9E-03 c 3.1E-03 c 1.1E-06Nitrosomorpholine [N-] 59-89-2 6.7E+00 C 1.9E-03 C 1 0.1 7.2E-02 c 2.6E-01 c 1.3E-03 c 6.5E-03 c 1.0E-02 c 2.3E-06Nitrosopiperidine [N-] 100-75-4 9.4E+00 C 2.7E-03 C 1 0.1 5.2E-02 c 1.8E-01 c 9.0E-04 c 4.5E-03 c 7.2E-03 c 5.6E-06Nitrosopyrrolidine, N- 930-55-2 2.1E+00 I 6.1E-04 I 1 0.1 2.3E-01 c 8.2E-01 c 4.0E-03 c 2.0E-02 c 3.2E-02 c 1.7E-05Nitrotoluene, m- 99-08-1 2.0E-02 P 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 6.0E-01Nitrotoluene, o- 88-72-2 2.2E-01 P 9.0E-04 P V 1 1.3E+03 2.9E+00 c* 1.3E+01 c* 3.1E-01 c 2.5E-04Nitrotoluene, p- 99-99-0 1.6E-02 P 4.0E-03 P 1 0.1 3.0E+01 c** 1.1E+02 c* 4.2E+00 c* 3.4E-03Norflurazon 27314-13-2 4.0E-02 I 1 0.1 2.4E+03 n 2.5E+04 n 1.5E+03 n 1.7E+01Nustar 85509-19-9 7.0E-04 I 1 0.1 4.3E+01 n 4.3E+02 n 2.6E+01 n 9.0E+01Page 6 of 9Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgKey: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey keyOctabromodiphenyl Ether 32536-52-0 3.0E-03 I 1 0.1 1.8E+02 n 1.8E+03 n 1.1E+02 n 3.1E+01Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetra (HMX) 2691-41-0 5.0E-02 I 1 0.006 3.8E+03 n 4.9E+04 n 1.8E+03 n 7.1E+00Octamethylpyrophosphoramide 152-16-9 2.0E-03 H 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 1.3E-01Oryzalin 19044-88-3 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 4.8E+00Oxadiazon 19666-30-9 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 1.3E+00Oxamyl 23135-22-0 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 2.0E+02 2.0E-01 4.4E-02Paclobutrazol 76738-62-0 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.2E+01Paraquat Dichloride 1910-42-5 4.5E-03 I 1 0.1 2.7E+02 n 2.8E+03 n 1.6E+02 n 4.9E-01Parathion 56-38-2 6.0E-03 H 1 0.1 3.7E+02 n 3.7E+03 n 2.2E+02 n 8.2E-01Pebulate 1114-71-2 5.0E-02 H 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 2.1E+00Pendimethalin 40487-42-1 4.0E-02 I 1 0.1 2.4E+03 n 2.5E+04 n 1.5E+03 n 7.9E+00Pentabromodiphenyl Ether 32534-81-9 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 4.5E+00Pentabromodiphenyl ether, 2,2',4,4',5- (BDE-99) 60348-60-9 1.0E-04 I 7.8E+00 n 1.0E+02 n 3.7E+00 nPentachlorobenzene 608-93-5 8.0E-04 I 1 0.1 4.9E+01 n 4.9E+02 n 2.9E+01 n 1.2E-01Pentachloroethane 76-01-7 9.0E-02 P 1 0.1 5.4E+00 c 1.9E+01 c 7.5E-01 c 3.9E-04Pentachloronitrobenzene 82-68-8 2.6E-01 H 3.0E-03 I 1 0.1 1.9E+00 c* 6.6E+00 c 2.6E-01 c 1.3E-03Pentachlorophenol 87-86-5 1.2E-01 I 4.6E-06 C 3.0E-02 I 1 0.25 3.0E+00 c 9.0E+00 c 5.3E-01 c 2.7E+00 c 5.6E-01 c 1.0E+00 3.9E-03 7.0E-03Perchlorate and Perchlorate Salts 14797-73-0 7.0E-04 I 1 5.5E+01 n 7.2E+02 n 2.6E+01 n 15 (F)Permethrin 52645-53-1 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 6.5E+02Phenacetin 62-44-2 2.2E-03 C 6.3E-07 C 1 0.1 2.2E+02 c 7.8E+02 c 3.9E+00 c 1.9E+01 c 3.1E+01 c 9.2E-03Phenmedipham 13684-63-4 2.5E-01 I 1 0.1 1.5E+04 n 1.5E+05 nm 9.1E+03 n 6.8E+00Phenol 108-95-2 3.0E-01 I 2.0E-01 C 1 0.1 1.8E+04 n 1.8E+05 nm 2.1E+02 n 8.8E+02 n 1.1E+04 n 8.1E+00Phenylenediamine, m- 108-45-2 6.0E-03 I 1 0.1 3.7E+02 n 3.7E+03 n 2.2E+02 n 7.6E-02Phenylenediamine, o- 95-54-5 4.7E-02 H 1 0.1 1.0E+01 c 3.7E+01 c 1.4E+00 c 5.0E-04Phenylenediamine, p- 106-50-3 1.9E-01 H 1 0.1 1.2E+04 n 1.2E+05 nm 6.9E+03 n 2.4E+00Phenylphenol, 2- 90-43-7 1.9E-03 H 1 0.1 2.5E+02 c 8.9E+02 c 3.5E+01 c 7.2E-01Phorate 298-02-2 2.0E-04 H 1 0.1 1.2E+01 n 1.2E+02 n 7.3E+00 n 7.9E-03Phosgene 75-44-5 3.0E-04 I V 1 8.7E+04 4.0E-01 n 1.7E+00 n 3.1E-01 n 1.3E+00 nPhosmet 732-11-6 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 2.1E-01Phosphine 7803-51-2 3.0E-04 I 3.0E-04 I 1 2.3E+01 n 3.1E+02 n 3.1E-01 n 1.3E+00 n 1.1E+01 nPhosphoric Acid 7664-38-2 1.0E-02 I 1 1.4E+07 nm 6.0E+07 nm 1.0E+01 n 4.4E+01 nPhosphorus, White 7723-14-0 2.0E-05 I 1 1.6E+00 n 2.0E+01 n 7.3E-01 n 2.7E-03Phthalic Acid, P- 100-21-0 1.0E+00 H 1 0.1 6.1E+04 n 6.2E+05 nm 3.7E+04 n 1.3E+01Phthalic Anhydride 85-44-9 2.0E+00 I 2.0E-02 C 1 0.1 1.2E+05 nm 1.2E+06 nm 2.1E+01 n 8.8E+01 n 7.3E+04 n 1.6E+01Picloram 1918-02-1 7.0E-02 I 1 0.1 4.3E+03 n 4.3E+04 n 2.6E+03 n 5.0E+02 6.0E-01 1.2E-01Picramic Acid (2-Amino-4,6-dinitrophenol) 96-91-3 2.0E-03 P 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 2.9E-02Pirimiphos, Methyl 29232-93-7 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.7E-01Polybrominated Biphenyls 59536-65-1 3.0E+01 C 8.6E-03 C 7.0E-06 H 1 0.1 1.6E-02 c* 5.7E-02 c* 2.8E-04 c 1.4E-03 c 2.2E-03 cPolychlorinated Biphenyls (PCBs)~Aroclor 1016 12674-11-2 7.0E-02 I 2.0E-05 I 7.0E-05 I 1 0.14 3.9E+00 n 2.1E+01 c** 1.2E-01 c 6.1E-01 c 9.6E-01 c** 5.2E-02~Aroclor 1221 11104-28-2 2.0E+00 I 5.7E-04 I V 1 0.14 3.0E+02 1.7E-01 c 6.2E-01 c 4.3E-03 c 2.1E-02 c 6.8E-03 c 1.4E-04~Aroclor 1232 11141-16-5 2.0E+00 I 5.7E-04 I V 1 0.14 3.0E+02 1.7E-01 c 6.2E-01 c 4.3E-03 c 2.1E-02 c 6.8E-03 c 1.4E-04~Aroclor 1242 53469-21-9 2.0E+00 I 5.7E-04 I 1 0.14 2.2E-01 c 7.4E-01 c 4.3E-03 c 2.1E-02 c 3.4E-02 c 3.0E-03~Aroclor 1248 12672-29-6 2.0E+00 I 5.7E-04 I 1 0.14 2.2E-01 c 7.4E-01 c 4.3E-03 c 2.1E-02 c 3.4E-02 c 3.0E-03~Aroclor 1254 11097-69-1 2.0E+00 I 5.7E-04 I 2.0E-05 I 1 0.14 2.2E-01 c** 7.4E-01 c* 4.3E-03 c 2.1E-02 c 3.4E-02 c* 5.1E-03~Aroclor 1260 11096-82-5 2.0E+00 I 5.7E-04 I 1 0.14 2.2E-01 c 7.4E-01 c 4.3E-03 c 2.1E-02 c 3.4E-02 c 1.4E-02~Heptachlorobiphenyl, 2,3,3',4,4',5,5'- (PCB 189) 39635-31-9 1.3E+01 C 3.8E-03 C 1 0.14 3.4E-02 c 1.1E-01 c 6.4E-04 c 3.2E-03 c 5.2E-03 c 2.1E-03~Hexachlorobiphenyl, 2,3',4,4',5,5'- (PCB 167) 52663-72-6 1.3E+01 C 3.8E-03 C 1 0.14 3.4E-02 c 1.1E-01 c 6.4E-04 c 3.2E-03 c 5.2E-03 c 1.3E-03~Hexachlorobiphenyl, 2,3,3',4,4',5'- (PCB 157) 69782-90-7 6.5E+02 C 1.9E-02 C 1 0.14 6.8E-04 c 2.3E-03 c 1.3E-04 c 6.5E-04 c 1.0E-04 c 2.6E-05~Hexachlorobiphenyl, 2,3,3',4,4',5- (PCB 156) 38380-08-4 6.5E+02 C 1.9E-02 C 1 0.14 6.8E-04 c 2.3E-03 c 1.3E-04 c 6.5E-04 c 1.0E-04 c 2.6E-05~Hexachlorobiphenyl, 3,3',4,4',5,5'- (PCB 169) 32774-16-6 1.3E+01 C 3.8E-03 C 1 0.14 3.4E-02 c 1.1E-01 c 6.4E-04 c 3.2E-03 c 5.2E-03 c 1.3E-03~Pentachlorobiphenyl, 2',3,4,4',5- (PCB 123) 65510-44-3 1.3E+01 C 3.8E-03 C 1 0.14 3.4E-02 c 1.1E-01 c 6.4E-04 c 3.2E-03 c 5.2E-03 c 7.8E-04~Pentachlorobiphenyl, 2,3',4,4',5- (PCB 118) 31508-00-6 1.3E+01 C 3.8E-03 C 1 0.14 3.4E-02 c 1.1E-01 c 6.4E-04 c 3.2E-03 c 5.2E-03 c 7.7E-04~Pentachlorobiphenyl, 2,3,3',4,4'- (PCB 105) 32598-14-4 1.3E+01 C 3.8E-03 C 1 0.14 3.4E-02 c 1.1E-01 c 6.4E-04 c 3.2E-03 c 5.2E-03 c 7.8E-04~Pentachlorobiphenyl, 2,3,4,4',5- (PCB 114) 74472-37-0 6.5E+02 C 1.9E-02 C 1 0.14 6.8E-04 c 2.3E-03 c 1.3E-04 c 6.5E-04 c 1.0E-04 c 1.6E-05~Pentachlorobiphenyl, 3,3',4,4',5- (PCB 126) 57465-28-8 1.3E+04 C 3.8E+00 C 1 0.14 3.4E-05 c 1.1E-04 c 6.4E-07 c 3.2E-06 c 5.2E-06 c 7.7E-07~Polychlorinated Biphenyls (high risk) 1336-36-3 2.0E+00 I 5.7E-04 C 1 0.14 2.2E-01 c 7.4E-01 c 4.3E-03 c 2.2E-02 c~Polychlorinated Biphenyls (low risk) 1336-36-3 4.0E-01 I 1.0E-04 I 1 0.14 2.4E-02 c 1.2E-01 c 1.7E-01 c 5.0E-01 1.5E-02 4.5E-02~Polychlorinated Biphenyls (lowest risk) 1336-36-3 7.0E-02 I 5.7E-04 C 1 0.14 4.3E-03 c 2.2E-02 c~Tetrachlorobiphenyl, 3,3',4,4'- (PCB 77) 32598-13-3 1.3E+01 C 3.8E-03 C 1 0.14 3.4E-02 c 1.1E-01 c 6.4E-04 c 3.2E-03 c 5.2E-03 c 4.6E-04~Tetrachlorobiphenyl, 3,4,4',5- (PCB 81) 70362-50-4 1.3E+01 C 3.8E-03 C 1 0.14 3.4E-02 c 1.1E-01 c 6.4E-04 c 3.2E-03 c 5.2E-03 c 4.6E-04Polymeric Methylene Diphenyl Diisocyanate (PMDI) 9016-87-9 6.0E-04 I 1 0.1 8.5E+05 nm 3.6E+06 nm 6.3E-01 n 2.6E+00 nPolynuclear Aromatic Hydrocarbons (PAHs)~Acenaphthene 83-32-9 6.0E-02 I V 1 0.13 3.4E+03 n 3.3E+04 n 2.2E+03 n 2.7E+01~Anthracene 120-12-7 3.0E-01 I V 1 0.13 1.7E+04 n 1.7E+05 nm 1.1E+04 n 4.5E+02~Benz[a]anthracene 56-55-3 7.3E-01 I 1.1E-04 C M 1 0.13 1.5E-01 c 2.1E+00 c 8.7E-03 c 1.1E-01 c 2.9E-02 c 1.4E-02~Benzo[a]pyrene 50-32-8 7.3E+00 I 1.1E-03 C M 1 0.13 1.5E-02 c 2.1E-01 c 8.7E-04 c 1.1E-02 c 2.9E-03 c 2.0E-01 4.6E-03 3.1E-01~Benzo[b]fluoranthene 205-99-2 7.3E-01 I 1.1E-04 C M 1 0.13 1.5E-01 c 2.1E+00 c 8.7E-03 c 1.1E-01 c 2.9E-02 c 4.7E-02~Benzo[k]fluoranthene 207-08-9 7.3E-02 I 1.1E-04 C M 1 0.13 1.5E+00 c 2.1E+01 c 8.7E-03 c 1.1E-01 c 2.9E-01 c 4.6E-01~Chrysene 218-01-9 7.3E-03 I 1.1E-05 C M 1 0.13 1.5E+01 c 2.1E+02 c 8.7E-02 c 1.1E+00 c 2.9E+00 c 1.4E+00~Dibenz[a,h]anthracene 53-70-3 7.3E+00 I 1.2E-03 C M 1 0.13 1.5E-02 c 2.1E-01 c 8.0E-04 c 1.0E-02 c 2.9E-03 c 1.5E-02~Dimethylbenz(a)anthracene, 7,12- 57-97-6 2.5E+02 C 7.1E-02 C 1 0.13 1.8E-03 c 6.2E-03 c 3.4E-05 c 1.7E-04 c 2.7E-04 c 3.5E-04~Fluoranthene 206-44-0 4.0E-02 I 1 0.13 2.3E+03 n 2.2E+04 n 1.5E+03 n 2.1E+02~Fluorene 86-73-7 4.0E-02 I V 1 0.13 2.3E+03 n 2.2E+04 n 1.5E+03 n 3.3E+01~Indeno[1,2,3-cd]pyrene 193-39-5 7.3E-01 I 1.1E-04 C M 1 0.13 1.5E-01 c 2.1E+00 c 8.7E-03 c 1.1E-01 c 2.9E-02 c 1.6E-01~Methylnaphthalene, 1- 90-12-0 2.9E-02 P 7.0E-02 A V 1 4.6E+02 2.2E+01 c 9.9E+01 c 2.3E+00 c 1.5E-02~Methylnaphthalene, 2- 91-57-6 4.0E-03 I V 1 4.4E+02 3.1E+02 n 4.1E+03 ns 1.5E+02 n 9.0E-01Page 7 of 9Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgKey: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey key~Naphthalene 91-20-3 3.4E-05 C 2.0E-02 I 3.0E-03 I V 1 0.13 3.9E+00 c* 2.0E+01 c* 7.2E-02 c* 3.6E-01 c* 1.4E-01 c* 5.5E-04~Pyrene 129-00-0 3.0E-02 I V 1 0.13 1.7E+03 n 1.7E+04 n 1.1E+03 n 1.5E+02Potassium Perchlorate 7778-74-7 7.0E-04 I 1 5.5E+01 n 7.2E+02 n 2.6E+01 nProchloraz 67747-09-5 1.5E-01 I 9.0E-03 I 1 0.1 3.2E+00 c 1.1E+01 c 4.5E-01 c 2.5E-03Profluralin 26399-36-0 6.0E-03 H 1 0.1 3.7E+02 n 3.7E+03 n 2.2E+02 n 8.0E+00Prometon 1610-18-0 1.5E-02 I 1 0.1 9.2E+02 n 9.2E+03 n 5.5E+02 n 2.8E-01Prometryn 7287-19-6 4.0E-03 I 1 0.1 2.4E+02 n 2.5E+03 n 1.5E+02 n 2.3E-01Propachlor 1918-16-7 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 3.7E-01Propanil 709-98-8 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 1.1E-01Propargite 2312-35-8 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 2.0E+02Propargyl Alcohol 107-19-7 2.0E-03 I 1 0.1 1.2E+02 n 1.2E+03 n 7.3E+01 n 1.5E-02Propazine 139-40-2 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 6.7E-01Propham 122-42-9 2.0E-02 I 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 3.3E-01Propiconazole 60207-90-1 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 5.4E+00Propionaldehyde 123-38-6 8.0E-03 I V 3.6E+04 8.6E+01 n 3.6E+02 n 8.3E+00 n 3.5E+01 n 1.7E+01 n 3.4E-03Propylene Glycol 57-55-6 2.0E+01 P 1 0.1 1.2E+06 nm 1.2E+07 nm 7.3E+05 n 1.5E+02Propylene Glycol Dinitrate 6423-43-4 2.7E-04 A V 1 1.4E+03 6.0E+01 n 2.5E+02 n 2.8E-01 n 1.2E+00 n 5.7E-01 n 1.9E-04Propylene Glycol Monoethyl Ether 1569-02-4 7.0E-01 H 1 0.1 4.3E+04 n 4.3E+05 nm 2.6E+04 n 5.2E+00Propylene Glycol Monomethyl Ether 107-98-2 7.0E-01 H 2.0E+00 I 1 0.1 4.3E+04 n 4.3E+05 nm 2.1E+03 n 8.8E+03 n 2.6E+04 n 5.2E+00Propylene Oxide 75-56-9 2.4E-01 I 3.7E-06 I 3.0E-02 I V 1 6.8E+04 1.9E+00 c 8.7E+00 c 6.6E-01 c* 3.3E+00 c* 2.3E-01 c 4.7E-05Pursuit 81335-77-5 2.5E-01 I 1 0.1 1.5E+04 n 1.5E+05 nm 9.1E+03 n 2.7E+01Pydrin 51630-58-1 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 8.1E+02Pyridine 110-86-1 1.0E-03 I V 1 3.0E+05 7.8E+01 n 1.0E+03 n 3.7E+01 n 9.7E-03Quinalphos 13593-03-8 5.0E-04 I 1 0.1 3.1E+01 n 3.1E+02 n 1.8E+01 n 7.1E-02Quinoline 91-22-5 3.0E+00 I 1 0.1 1.6E-01 c 5.7E-01 c 2.2E-02 c 8.7E-05Refractory Ceramic Fibers NA 3.0E-02 A 1 4.3E+07 nm 1.8E+08 nm 3.1E+01 n 1.3E+02 nResmethrin 10453-86-8 3.0E-02 I 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 9.3E+02Ronnel 299-84-3 5.0E-02 H 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 7.7E+00Rotenone 83-79-4 4.0E-03 I 1 0.1 2.4E+02 n 2.5E+03 n 1.5E+02 n 1.0E+02Safrole 94-59-7 2.2E-01 C 6.3E-05 C 1 0.1 2.2E+00 c 7.8E+00 c 3.9E-02 c 1.9E-01 c 3.1E-01 c 2.4E-04Savey 78587-05-0 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 7.6E+00Selenious Acid 7783-00-8 5.0E-03 I 1 3.9E+02 n 5.1E+03 n 1.8E+02 nSelenium 7782-49-2 5.0E-03 I 2.0E-02 C 1 3.9E+02 n 5.1E+03 n 2.1E+01 n 8.8E+01 n 1.8E+02 n 5.0E+01 9.5E-01 2.6E-01Selenourea 630-10-4 5.0E-03 H 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 nSethoxydim 74051-80-2 9.0E-02 I 1 0.1 5.5E+03 n 5.5E+04 n 3.3E+03 n 1.9E+01Silver 7440-22-4 5.0E-03 I 0.04 3.9E+02 n 5.1E+03 n 1.8E+02 n 1.6E+00Simazine 122-34-9 1.2E-01 H 5.0E-03 I 1 0.1 4.0E+00 c* 1.4E+01 c 5.6E-01 c 4.0E+00 2.8E-04 2.0E-03Sodium Acifluorfen 62476-59-9 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 3.1E+00Sodium Azide 26628-22-8 4.0E-03 I 1 3.1E+02 n 4.1E+03 n 1.5E+02 nSodium Diethyldithiocarbamate 148-18-5 2.7E-01 H 3.0E-02 I 1 0.1 1.8E+00 c 6.4E+00 c 2.5E-01 cSodium Fluoride 7681-49-4 5.0E-02 A 1 3.9E+03 n 5.1E+04 n 1.8E+03 nSodium Fluoroacetate 62-74-8 2.0E-05 I 1 0.1 1.2E+00 n 1.2E+01 n 7.3E-01 n 1.5E-04Sodium Metavanadate 13718-26-8 1.0E-03 H 1 7.8E+01 n 1.0E+03 n 3.7E+01 nSodium Perchlorate 7601-89-0 7.0E-04 I 1 5.5E+01 n 7.2E+02 n 2.6E+01 nStirofos (Tetrachlorovinphos) 961-11-5 2.4E-02 H 3.0E-02 I 1 0.1 2.0E+01 c* 7.2E+01 c 2.8E+00 c 2.2E-03Strontium, Stable 7440-24-6 6.0E-01 I 1 4.7E+04 n 6.1E+05 nm 2.2E+04 n 7.7E+02Strychnine 57-24-9 3.0E-04 I 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 1.4E-01Styrene 100-42-5 2.0E-01 I 1.0E+00 I V 1 1.0E+03 6.5E+03 ns 3.8E+04 ns 1.0E+03 n 4.4E+03 n 1.6E+03 n 1.0E+02 2.0E+00 1.2E-01Sulfonylbis(4-chlorobenzene), 1,1'- 80-07-9 5.0E-03 P 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 2.8E+00Systhane 88671-89-0 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 2.1E+02TCMTB 21564-17-0 3.0E-02 H 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 8.3E+00Tebuthiuron 34014-18-1 7.0E-02 I 1 0.1 4.3E+03 n 4.3E+04 n 2.6E+03 n 6.3E-01Temephos 3383-96-8 2.0E-02 H 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 2.3E+03Terbacil 5902-51-2 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.7E-01Terbufos 13071-79-9 2.5E-05 H 1 0.1 1.5E+00 n 1.5E+01 n 9.1E-01 n 2.0E-03Terbutryn 886-50-0 1.0E-03 I 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 5.4E-02Tetrabromodiphenyl ether, 2,2',4,4'- (BDE-47) 5436-43-1 1.0E-04 I 7.8E+00 n 1.0E+02 n 3.7E+00 nTetrachlorobenzene, 1,2,4,5- 95-94-3 3.0E-04 I 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 2.8E-02Tetrachloroethane, 1,1,1,2- 630-20-6 2.6E-02 I 7.4E-06 I 3.0E-02 I V 1 7.5E+02 2.0E+00 c 9.8E+00 c 3.3E-01 c 1.7E+00 c 5.2E-01 c 2.1E-04Tetrachloroethane, 1,1,2,2- 79-34-5 2.0E-01 I 5.8E-05 I 4.0E-03 P V 1 2.1E+03 5.9E-01 c 2.9E+00 c 4.2E-02 c 2.1E-01 c 6.7E-02 c 2.8E-05Tetrachloroethylene 127-18-4 5.4E-01 C 5.9E-06 C 1.0E-02 I 2.7E-01 A V 1 1.8E+02 5.7E-01 c 2.7E+00 c 4.1E-01 c 2.1E+00 c 1.1E-01 c 5.0E+00 5.2E-05 2.4E-03Tetrachlorophenol, 2,3,4,6- 58-90-2 3.0E-02 I 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 4.6E+00Tetrachlorotoluene, p- alpha, alpha, alpha- 5216-25-1 2.0E+01 H 1 0.1 2.4E-02 c 8.6E-02 c 3.4E-03 c 1.4E-05Tetraethyl Dithiopyrophosphate 3689-24-5 5.0E-04 I 1 0.1 3.1E+01 n 3.1E+02 n 1.8E+01 n 1.4E-01Tetrafluoroethane, 1,1,1,2- 811-97-2 8.0E+01 I V 1 8.2E+02 1.1E+05 nms 4.7E+05 nms 8.3E+04 n 3.5E+05 n 1.7E+05 n 9.6E+01Tetryl (Trinitrophenylmethylnitramine) 479-45-8 4.0E-03 P 1 0.1 2.4E+02 n 2.5E+03 n 1.5E+02 n 6.5E-01Thallium (I) Nitrate 10102-45-1 9.0E-05 I 1 7.0E+00 n 9.2E+01 n 3.3E+00 nThallium (Soluble Salts) 7440-28-0 6.5E-05 I 1 5.1E+00 n 6.6E+01 n 2.4E+00 n 2.0E+00 1.7E-01 1.4E-01Thallium Acetate 563-68-8 9.0E-05 I 1 7.0E+00 n 9.2E+01 n 3.3E+00 nThallium Carbonate 6533-73-9 8.0E-05 I 1 6.3E+00 n 8.2E+01 n 2.9E+00 nThallium Chloride 7791-12-0 8.0E-05 I 1 6.3E+00 n 8.2E+01 n 2.9E+00 nThallium Sulfate 7446-18-6 8.0E-05 I 1 6.3E+00 n 8.2E+01 n 2.9E+00 nThiobencarb 28249-77-6 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 2.0E+00Thiofanox 39196-18-4 3.0E-04 H 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 4.3E-03Thiophanate, Methyl 23564-05-8 8.0E-02 I 1 0.1 4.9E+03 n 4.9E+04 n 2.9E+03 n 6.7E-01Thiram 137-26-8 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 4.0E-02Tin 7440-31-5 6.0E-01 H 1 4.7E+04 n 6.1E+05 nm 2.2E+04 n 5.5E+03Page 8 of 9Regional Screening Level Table (RSL) Master APRIL 20095/19/2009SFO IUR RfDo RfCi CsatResidentialSoilIndustrialSoilResidentialAirIndustrialAir TapwaterMCLRisk-based SSL MCL-based SSL(mg/kg-day)-1(ug/m3)-1(mg/kg-day) (mg/m3) mg/kg mg/kg mg/kg ug/m3ug/m3ug/L ug/L mg/kg mg/kgKey: I = IRIS; P = PPRTV; A = ATSDR; C = Cal EPA; H = HEAST; W = WHO; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ #28; c = cancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit(See User's Guide); s = Concentration may exceed Csat (See User's Guide); SSL values are bsed on DAF=1Contaminant Toxicity and Chemical-specific Information Screening Levels Protection of Groundwater Soil Screening LevelsAnalyte CAS No.keykeykeykeyvocmutagenkey key keyGIABSABSkey keyTitanium Tetrachloride 7550-45-0 1.0E-04 A 1 1.4E+05 nm 6.0E+05 nm 1.0E-01 n 4.4E-01 nToluene 108-88-3 8.0E-02 I 5.0E+00 I V 1 9.3E+02 5.0E+03 ns 4.6E+04 ns 5.2E+03 n 2.2E+04 n 2.3E+03 n 1.0E+03 1.7E+00 7.6E-01Toluene diisocyanate mixture (TDI) 26471-62-5 3.9E-02 C 1.1E-05 C 7.0E-05 I V 1 2.1E+03 1.5E+01 c** 6.7E+01 c** 7.3E-02 n 3.1E-01 n 1.5E-01 n 2.7E-03Toluene-2,4-diamine 95-80-7 3.8E+00 C 1.1E-03 C 1 0.1 1.3E-01 c 4.5E-01 c 2.2E-03 c 1.1E-02 c 1.8E-02 c 7.8E-06Toluene-2,5-diamine 95-70-5 6.0E-01 H 1 0.1 3.7E+04 n 3.7E+05 nm 2.2E+04 n 9.6E+00Toluene-2,6-diamine 823-40-5 3.0E-02 P 1 0.1 1.8E+03 n 1.8E+04 n 1.1E+03 n 4.9E-01Toluidine, o- (Methylaniline, 2-) 95-53-4 1.8E-01 C 5.1E-05 C 1 0.1 2.7E+00 c 9.6E+00 c 4.8E-02 c 2.4E-01 c 3.7E-01 c 1.3E-04Toluidine, p- 106-49-0 1.9E-01 H 1 0.1 2.6E+00 c 9.1E+00 c 3.5E-01 c 1.2E-04Toxaphene 8001-35-2 1.1E+00 I 3.2E-04 I 1 0.1 4.4E-01 c 1.6E+00 c 7.6E-03 c 3.8E-02 c 6.1E-02 c 3.0E+00 1.2E-02 6.0E-01Tralomethrin 66841-25-6 7.5E-03 I 1 0.1 4.6E+02 n 4.6E+03 n 2.7E+02 n 1.4E+02Tri-n-butyltin 688-73-3 3.0E-04 A 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 2.8E-01Triallate 2303-17-5 1.3E-02 I 1 0.1 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.7E+00Triasulfuron 82097-50-5 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 3.3E-01Tribromobenzene, 1,2,4- 615-54-3 5.0E-03 I 1 0.1 3.1E+02 n 3.1E+03 n 1.8E+02 n 3.0E-01Tributyl Phosphate 126-73-8 9.2E-03 P 2.0E-01 P 1 0.1 5.3E+01 c 1.9E+02 c 7.3E+00 c 2.9E-02Tributyltin Compounds NA 3.0E-04 P 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 nTributyltin Oxide 56-35-9 3.0E-04 I 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 8.2E+02Trichloro-1,2,2-trifluoroethane, 1,1,2- 76-13-1 3.0E+01 I 3.0E+01 H V 1 9.4E+02 4.3E+04 ns 1.8E+05 nms 3.1E+04 n 1.3E+05 n 5.9E+04 n 1.5E+02Trichloroaniline HCl, 2,4,6- 33663-50-2 2.9E-02 H 1 0.1 1.7E+01 c 5.9E+01 c 2.3E+00 c 2.2E-03Trichloroaniline, 2,4,6- 634-93-5 3.4E-02 H 1 0.1 1.4E+01 c 5.1E+01 c 2.0E+00 c 1.2E-03Trichlorobenzene, 1,2,4- 120-82-1 3.6E-03 C 1.0E-02 I 4.0E-03 P V 1 2.2E+02 8.7E+01 n 4.0E+02 ns 4.2E+00 n 1.8E+01 n 8.2E+00 n 7.0E+01 1.3E-02 1.1E-01Trichloroethane, 1,1,1- 71-55-6 2.0E+00 I 5.0E+00 I V 1 6.8E+02 9.0E+03 ns 3.9E+04 ns 5.2E+03 n 2.2E+04 n 9.1E+03 n 2.0E+02 3.3E+00 7.2E-02Trichloroethane, 1,1,2- 79-00-5 5.7E-02 I 1.6E-05 I 4.0E-03 I V 1 5.6E+02 1.1E+00 c 5.5E+00 c 1.5E-01 c 7.7E-01 c 2.4E-01 c 5.0E+00 8.2E-05 1.7E-03Trichloroethylene 79-01-6 1.3E-02 C 2.0E-06 C V 1 7.5E+02 2.8E+00 c 1.4E+01 c 1.2E+00 c 6.1E+00 c 1.7E+00 c 5.0E+00 6.1E-04 1.9E-03Trichlorofluoromethane 75-69-4 3.0E-01 I 7.0E-01 H V 1 1.3E+03 8.0E+02 n 3.4E+03 ns 7.3E+02 n 3.1E+03 n 1.3E+03 n 8.4E-01Trichlorophenol, 2,4,5- 95-95-4 1.0E-01 I 1 0.1 6.1E+03 n 6.2E+04 n 3.7E+03 n 9.4E+00Trichlorophenol, 2,4,6- 88-06-2 1.1E-02 I 3.1E-06 I 1.0E-03 P 1 0.1 4.4E+01 c** 1.6E+02 c** 7.8E-01 c 4.0E+00 c 6.1E+00 c** 1.6E-02Trichlorophenoxy) Propionic Acid, 2(2,4,5- 93-72-1 8.0E-03 I 1 0.1 4.9E+02 n 4.9E+03 n 2.9E+02 n 5.0E+01 1.1E-01 1.8E-02Trichlorophenoxyacetic Acid, 2,4,5- 93-76-5 1.0E-02 I 1 0.1 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.1E-01Trichloropropane, 1,1,2- 598-77-6 5.0E-03 I V 1 1.4E+03 3.9E+02 n 5.1E+03 ns 1.8E+02 n 7.6E-02Trichloropropane, 1,2,3- 96-18-4 7.0E+00 H 6.0E-03 I V 1 1.6E+03 9.1E-02 c 4.1E-01 c 9.6E-03 c 4.4E-06Trichloropropene, 1,2,3- 96-19-5 1.0E-02 P 1.0E-03 P V 1 3.4E+02 2.7E+00 n 1.2E+01 n 1.0E+00 n 4.4E+00 n 2.1E+00 n 1.1E-03Tridiphane 58138-08-2 3.0E-03 I 1 0.1 1.8E+02 n 1.8E+03 n 1.1E+02 n 4.1E-01Triethylamine 121-44-8 7.0E-03 I V 1 5.5E+04 1.7E+02 n 7.1E+02 n 7.3E+00 n 3.1E+01 n 1.5E+01 n 6.1E-03Trifluralin 1582-09-8 7.7E-03 I 7.5E-03 I 1 0.1 6.3E+01 c** 2.2E+02 c* 8.7E+00 c* 1.7E-01Trimethyl Phosphate 512-56-1 3.7E-02 H 1 0.1 1.3E+01 c 4.7E+01 c 1.8E+00 c 3.9E-04Trimethylbenzene, 1,2,4- 95-63-6 7.0E-03 P V 1 2.5E+02 6.7E+01 n 2.8E+02 ns 7.3E+00 n 3.1E+01 n 1.5E+01 n 2.4E-02Trimethylbenzene, 1,3,5- 108-67-8 5.0E-02 P 6.0E-03 P V 1 2.1E+02 4.7E+01 n 2.0E+02 n 6.3E+00 n 2.6E+01 n 1.2E+01 n 2.0E-02Trinitrobenzene, 1,3,5- 99-35-4 3.0E-02 I 1 0.019 2.2E+03 n 2.7E+04 n 1.1E+03 n 2.6E+00Trinitrotoluene, 2,4,6- 118-96-7 3.0E-02 I 5.0E-04 I 1 0.032 1.9E+01 c** 7.9E+01 c** 2.2E+00 c** 8.7E-03Triphenylphosphine Oxide 791-28-6 2.0E-02 P 1 0.1 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.5E+00Tris(2-chloroethyl)phosphate 115-96-8 1.4E-02 P 3.0E-01 P 1 0.1 3.5E+01 c 1.2E+02 c 4.8E+00 c 3.9E-03Tris(2-ethylhexyl)phosphate 78-42-2 3.2E-03 P 1.0E-01 P 1 0.1 1.5E+02 c* 5.4E+02 c 2.1E+01 c 9.6E+01Uranium (Soluble Salts) NA 3.0E-03 I 3.0E-04 A 1 2.3E+02 n 3.1E+03 n 3.1E-01 n 1.3E+00 n 1.1E+02 n 4.9E+01Vanadium Pentoxide 1314-62-1 8.3E-03 P 9.0E-03 I 7.0E-06 P 0.026 4.0E+02 c** 2.0E+03 c** 2.9E-04 c* 1.5E-03 c* 3.3E+02 nVanadium Sulfate 36907-42-3 2.0E-02 H 0.026 1.6E+03 n 2.0E+04 n 7.3E+02 nVanadium and Compounds NA 5.0E-03 I 1 3.9E+02 n 5.2E+03 n 1.8E+02 n 1.8E+02Vanadium, Metallic 7440-62-2 7.0E-03 H 0.026 5.5E+02 n 7.2E+03 n 2.6E+02 n 2.6E+02Vernolate 1929-77-7 1.0E-03 I 1 0.1 6.1E+01 n 6.2E+02 n 3.7E+01 n 4.2E-02Vinclozolin 50471-44-8 2.5E-02 I 1 0.1 1.5E+03 n 1.5E+04 n 9.1E+02 n 7.1E-01Vinyl Acetate 108-05-4 1.0E+00 H 2.0E-01 I V 1 2.8E+03 9.9E+02 n 4.2E+03 ns 2.1E+02 n 8.8E+02 n 4.1E+02 n 8.8E-02Vinyl Bromide 593-60-2 3.2E-05 H 3.0E-03 I V 1 1.7E+03 1.1E-01 c* 5.8E-01 c* 7.6E-02 c* 3.8E-01 c* 1.5E-01 c* 4.4E-05Vinyl Chloride 75-01-4 7.2E-01 I 4.4E-06 I 3.0E-03 I 1.0E-01 I V M 1 4.0E+03 6.0E-02 c 1.7E+00 c 1.6E-01 c 2.8E+00 c 1.6E-02 c 2.0E+00 5.6E-06 7.0E-04Warfarin 81-81-2 3.0E-04 I 1 0.1 1.8E+01 n 1.8E+02 n 1.1E+01 n 8.2E-03Xylene, Mixture 1330-20-7 2.0E-01 I 1.0E-01 I V 1 3.0E+02 6.0E+02 ns 2.6E+03 ns 1.0E+02 n 4.4E+02 n 2.0E+02 n 1.0E+04 2.3E-01 1.1E+01Xylene, P- 106-42-3 7.0E-01 C V 1 4.5E+02 4.7E+03 ns 2.0E+04 ns 7.3E+02 n 3.1E+03 n 1.5E+03 n 1.6E+00Xylene, m- 108-38-3 2.0E+00 H 7.0E-01 C V 1 4.4E+02 4.5E+03 ns 1.9E+04 ns 7.3E+02 n 3.1E+03 n 1.4E+03 n 1.6E+00Xylene, o- 95-47-6 2.0E+00 H 7.0E-01 C V 1 3.0E+02 5.3E+03 ns 2.3E+04 ns 7.3E+02 n 3.1E+03 n 1.4E+03 n 1.6E+00Zinc (Metallic) 7440-66-6 3.0E-01 I 1 2.3E+04 n 3.1E+05 nm 1.1E+04 n 6.8E+02Zinc Phosphide 1314-84-7 3.0E-04 I 1 2.3E+01 n 3.1E+02 n 1.1E+01 nZineb 12122-67-7 5.0E-02 I 1 0.1 3.1E+03 n 3.1E+04 n 1.8E+03 n 4.0E-01Page 9 of 9