Pennsylvania Bulletin

PA Bulletin, Doc. No. 96-1362e

[26 Pa.B. 3985]

[Continued from previous Web Page]

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

Residential Non-Residential

Basis for Basis for

REGULATED SUBSTANCE CASRN MSC MSC MSC MSC

ACENAPHTHENE 83329 580 Inhalation - N 1200 Inhalation - N

ACENAPHTHYLENE 208968 580 Inhalation - N 1200 Inhalation - N

ACETALDEHYDE 75070 20 Inhalation - C 57 Inhalation - N

ACETIC ACID 64197 5 TR 5 TR

ACETIC ANHYDRIDE 108247 5 TR 5 TR

ACETONE 67641 3700 Ingestion - N 10000 Ingestion - N

ACETONITRILE 75058 58 Inhalation - N 122 Inhalation - N

ACETOPHENONE 98862 3700 Ingestion - N 10000 Ingestion - N

ACETYLAMINOFLUORENE, 2-(2AAF) 53963 0.17 Ingestion - C 0.67 Ingestion - C

ACROLEIN 107028 0.056 Inhalation - N 0.12 Inhalation - N

ACRYLAMIDE 79061 0.01 HAL 0.01 HAL

ACRYLIC ACID 79107 18000 Ingestion - N 51000 Ingestion - N

ACRYLONITRILE 107131 0.64 Inhalation - C 2.7 Inhalation - C

ALACHLOR 15972608 2 MCL 2 MCL

ALDICARB 116063 7 HAL 7 HAL

ALDRIN 309002 0.002 HAL 0.002 HAL

ALLYL ALCOHOL 107186 49 Inhalation - N 100 Inhalation - N

ALUMINUM 7429905 200 MCL 200 MCL

AMINOBIPHENYL, 4- 92671 0.03 Ingestion - C 0.12 Ingestion - C

AMITROLE 61825 0.028 Solubility 0.028 Solubility

AMMONIA 7664417 30000 HAL 30000 HAL

AMMONIUM CHLORIDE 12125092 7300 Ingestion - N 20000 Ingestion - N

AMMONIUM SULFAMATE 7773060 2000 HAL 2000 HAL

AMYL ACETATE, N- 628637 5 TR 5 TR

AMYL ACETATE, SEC- 626380 5 TR 5 TR

ANILINE 62533 10 Ingestion - N 29 Ingestion - N

ANTHRACENE 120127 1300 Solubility 1300 Solubility

ANTIMONY 7440360 6 MCL 6 MCL

ANTIMONY TRIOXIDE 1309644 15 Ingestion - N 41 Ingestion - N

ANTU 86884 5 TR 5 TR

ARAMITE 140578 27 Ingestion - C 100 Ingestion - C

ARSENIC 7440382 50 MCL 50 MCL

ASBESTOS 12001295 7,000,000 fibers/L MCL 7,000,000 fibers/L MCL

ATRAZINE 1912249 3 MCL 3 MCL

AZINPHOS-METHYL 86500 5 TR 5 TR

BARIUM AND COMPOUNDS 7440393 2000 MCL 2000 MCL

BAYGON (PROPOXUR) 114261 3 HAL 3 HAL

BENZENE 71432 5 MCL 5 MCL

BENZIDINE 92875 0.003 Ingestion - C 0.011 Ingestion - C

BENZO[A]ANTHRACENE 56553 0.91 Ingestion - C 3.5 Ingestion - C

BENZO[A]PYRENE 50328 0.2 MCL 0.2 MCL

BENZO[B]FLUORANTHENE 205992 0.91 Ingestion - C 3.5 Ingestion - C

BENZO[GHI]PERYLENE 191242 0.26 Solubility 0.26 Solubility

BENZO[K]FLUORANTHENE 207089 9.1 Ingestion - C 29 Solubility

BENZOIC ACID 65850 39000 Inhalation - N 82000 Inhalation - N

BENZYL ALCOHOL 100516 11000 Ingestion - N 31000 Ingestion - N

BENZYL CHLORIDE 100447 0.89 Inhalation - C 3.7 Inhalation - C

BERYLLIUM 7440417 4 MCL 4 MCL

All MSCs in ug/L (Except asbestos).
Basis: MCL = Maximum Contaminant Level; HAL = Lifetime Health Advisory Level; N = Systemic effect;
C = Cancer effect (10^-5 risk level); TR = Threshold of Regulation; Solubility = Aqueous solubility

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

Residential Non-Residential

Basis for Basis for

REGULATED SUBSTANCE CASRN MSC MSC MSC MSC

PROPIOLACTONE, BETA 57578 5 TR 5 TR

BHC, ALPHA- 319846 0.11 Ingestion - C 0.41 Ingestion - C

BHC, BETA- 319857 0.37 Ingestion - C 1.4 Ingestion - C

BHC, DELTA- 319868 11 Ingestion - N 31 Ingestion - N

BHC, GAMMA (LINDANE) 58899 0.2 MCL 0.2 MCL

BIPHENYL 92524 490 Inhalation - N 1000 Inhalation - N

BIS(2-CHLORO-1-METHYLETHYL)ETHER 108601 300 HAL 300 HAL

BIS(2-CHLORO-ISOPROPYL)ETHER 39638329 300 HAL 300 HAL

BIS(2-CHLOROETHOXY)METHANE 111911 5 TR 5 TR

BIS(2-CHLOROETHYL)ETHER 111444 0.13 Inhalation - C 0.55 Inhalation - C

BIS(CHLOROMETHYL)ETHER 542881 0.0007 Inhalation - C 0.0029 Inhalation - C

BIS[2-ETHYLHEXYL]PHTHALATE 117817 6 MCL 6 MCL

BORON AND COMPOUNDS 7440428 600 HAL 600 HAL

BROMODICHLOROMETHANE 75274 100 MCL 100 MCL

BROMOMETHANE 74839 10 HAL 10 HAL

BROMOPHENYL PHENYL ETHER, 4- 101553 5 TR 5 TR

BUTADIENE, 1,3- 106990 0.16 Inhalation - C 0.65 Inhalation - C

BUTYL ACETATE, N- 123864 5 TR 5 TR

BUTYL ACETATE, SEC- 105464 5 TR 5 TR

BUTYL ACETATE, TERT- 540885 5 TR 5 TR

BUTYL ALCOHOL, N- 71363 3700 Ingestion - N 10000 Ingestion - N

BUTYL PHTHALATE, DI-N- 84742 3700 Ingestion - N 10000 Ingestion - N

BUTYLAMINE, N- 109739 5 TR 5 TR

BUTYLBENZYL PHTHALATE 85687 2600 Solubility 2600 Solubility

CADMIUM 7440439 5 MCL 5 MCL

CADMIUM OXIDE 1306190 18 Ingestion - N 51 Ingestion - N

CALCIUM CHROMATE 13765190 5 TR 5 TR

CALCIUM CYANAMIDE 156627 5 TR 5 TR

CAPROLACTAM DUST 105602 18000 Ingestion - N 51000 Ingestion - N

CAPTAN 133062 190 Ingestion - C 730 Ingestion - C

CARBARYL 63252 700 HAL 700 HAL

CARBOFURAN 1563662 40 MCL 40 MCL

CARBON DISULFIDE 75150 1900 Inhalation - N 4100 Inhalation - N

CARBON TETRACHLORIDE 56235 5 MCL 5 MCL

CARBONYL FLUORIDE 353504 5 TR 5 TR

CATECHOL 120809 5 TR 5 TR

CHLORAL HYDRATE 75876 60 HAL 60 HAL

CHLORAMBEN 133904 100 HAL 100 HAL

CHLORDANE 57749 2 MCL 2 MCL

CHLORDANE, ALPHA- 5103719 0.51 Ingestion - C 2 Ingestion - C

CHLORDANE, GAMMA- 5103742 0.51 Ingestion - C 2 Ingestion - C

CHLORINE 7782505 3700 Ingestion - N 10000 Ingestion - N

CHLORO-1-PROPENE, 3- (ALLYL CHLORIDE) 107051 2.8 Inhalation - N 5.8 Inhalation - N

CHLOROACETALDEHYDE 107200 5 TR 5 TR

CHLOROACETOPHENONE, ALPHA- 532274 0.083 Inhalation - N 0.18 Inhalation - N

CHLOROANILINE, P- 106478 39 Inhalation - N 82 Inhalation - N

CHLOROBENZENE 108907 100 MCL 100 MCL

CHLOROBENZILATE 510156 2.5 Ingestion - C 9.5 Ingestion - C

All MSCs in ug/L (Except asbestos).
Basis: MCL = Maximum Contaminant Level; HAL = Lifetime Health Advisory Level; N = Systemic effect;
C = Cancer effect (10^-5 risk level); TR = Threshold of Regulation; Solubility = Aqueous solubility

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

Residential Non-Residential

Basis for Basis for

REGULATED SUBSTANCE CASRN MSC MSC MSC MSC

CHLORODIBROMOMETHANE 124481 100 MCL 100 MCL

CHLOROETHANE 75003 28000 Inhalation - N 58000 Inhalation - N

CHLOROETHYL VINYL ETHER, 2- 110758 240 Inhalation - N 510 Inhalation - N

CHLOROFORM 67663 100 MCL 100 MCL

CHLORONAPHTHALENE, 2- 91587 780 Inhalation - N 1600 Inhalation - N

CHLOROPHENOL, 2- 95578 40 HAL 40 HAL

CHLOROPHENYL PHENYL ETHER, 4- 7005723 5 TR 5 TR

CHLOROPRENE 126998 19 Inhalation - N 41 Inhalation - N

CHLORPYRIFOS 2921882 20 HAL 20 HAL

CHROMIUM III 7440473 100 MCL 100 MCL

CHROMIUM VI 180 Ingestion - N 510 Ingestion - N

CHRYSENE 218019 1.9 Solubility 1.9 Solubility

COBALT 7440484 2200 Ingestion - N 6100 Ingestion - N

COBALT CARBONYL 10210681 2200 Ingestion - N 6100 Ingestion - N

COPPER 7440508 1000 MCL 1000 MCL

CRESOL 1319773 180 Ingestion - N 510 Ingestion - N

CRESOL, P-CHLORO-M- 59507 180 Ingestion - N 510 Ingestion - N

CROTONALDEHYDE 4170303 0.35 Ingestion - C 1.3 Ingestion - C

CUMENE 98828 25 Inhalation - N 53 Inhalation - N

CYANIDE, TOTAL 57125 200 MCL 200 MCL

CYANOGEN 460195 390 Inhalation - N 820 Inhalation - N

CYANOGEN CHLORIDE 506774 390 Inhalation - N 820 Inhalation - N

CYCLOHEXANE 110827 5 TR 5 TR

CYCLOHEXANONE 108941 49000 Inhalation - N 102000 Inhalation - N

CYCLOHEXYLAMINE 108918 7300 Ingestion - N 20000 Ingestion - N

CYCLOPHOSPHAMIDE (ANHYDROUS) 50180 1.1 Ingestion - C 4.2 Ingestion - C

CYCLOPHOSPHAMIDE (HYDRATED) 6055192 1.2 Ingestion - C 4.5 Ingestion - C

DDD, 4,4'- 72548 2.8 Ingestion - C 11 Ingestion - C

DDE, 4,4'- 72559 2 Ingestion - C 7.5 Ingestion - C

DDT, 4,4'- 50293 2 Ingestion - C 3.4 Solubility

DECABORANE 17702419 5 TR 5 TR

DECACHLOROBIPHENYL 2051243 0.086 Ingestion - C 0.33 Ingestion - C

DEMETON 8065483 1.5 Ingestion - N 4.1 Ingestion - N

DIALLATE 2303164 11 Ingestion - C 42 Ingestion - C

DIAZINON 333415 0.6 HAL 0.6 HAL

DIBENZO[A,H]ANTHRACENE 53703 0.091 Ingestion - C 0.35 Ingestion - C

DIBENZOFURAN 132649 5 TR 5 TR

DIBROMO-3-CHLOROPROPANE, 1,2- 96128 0.2 MCL 0.2 MCL

DIBROMOETHANE, 1,2- (ETHYLENE DIBROMIDE) 106934 0.05 MCL 0.05 MCL

DIBROMOMETHANE 74953 97 Inhalation - N 200 Inhalation - N

DICAMBA 1918000 200 HAL 200 HAL

DICHLORO-2-BUTENE, TRANS-1,3- 110576 5 TR 5 TR

DICHLOROBENZENE, 1,2- 95501 600 MCL 600 MCL

DICHLOROBENZENE, 1,3- 541731 870 Inhalation - N 1800 Inhalation - N

DICHLOROBENZENE, P- 106467 75 MCL 75 MCL

DICHLOROBENZIDINE, 3,3'- 91941 1.5 Ingestion - C 5.7 Ingestion - C

DICHLOROBIPHENYL 2051607 0.086 Ingestion - C 0.33 Ingestion - C

DICHLORODIFLUOROMETHANE (FREON 12) 75718 1000 HAL 1000 HAL

All MSCs in ug/L (Except asbestos).
Basis: MCL = Maximum Contaminant Level; HAL = Lifetime Health Advisory Level; N = Systemic effect;
C = Cancer effect (10^-5 risk level); TR = Threshold of Regulation; Solubility = Aqueous solubility

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

Residential Non-Residential

Basis for Basis for

REGULATED SUBSTANCE CASRN MSC MSC MSC MSC

DICHLOROETHANE, 1,1- 75343 27 Inhalation - C 110 Inhalation - C

DICHLOROETHANE, 1,2- 107062 5 MCL 5 MCL

DICHLOROETHYLENE, 1,1- 75354 7 MCL 7 MCL

DICHLOROETHYLENE, CIS-1,2- 156592 70 MCL 70 MCL

DICHLOROETHYLENE, TRANS-1,2- 156605 100 MCL 100 MCL

DICHLOROMETHANE (METHYLENE CHLORIDE) 75092 5 MCL 5 MCL

DICHLOROPHENOL, 2,4- 120832 20 HAL 20 HAL

DICHLOROPHENOL, 2,6- 87650 110 Ingestion - N 310 Ingestion - N

DICHLOROPHENOXYACETIC ACID, 2,4- (2,4-D) 94757 70 MCL 70 MCL

DICHLOROPROPANE, 1,2- 78875 5 MCL 5 MCL

DICHLOROPROPANE, 1,3- 142289 2.4 Inhalation - C 10 Inhalation - C

DICHLOROPROPANE, 2,2- 590207 10 Ingestion - C 38 Ingestion - C

DICHLOROPROPENE, 1,1- 563586 3.7 Ingestion - C 14 Ingestion - C

DICHLOROPROPENE,1,3- 542756 1.2 Inhalation - C 4.9 Inhalation - C

DICHLOROPROPIONIC ACID, 2,2- (DALAPON) 75990 200 MCL 200 MCL

DICHLORVOS 62737 2.3 Ingestion - C 8.8 Ingestion - C

DICROTOPHOS 141662 3.6 Ingestion - N 10 Ingestion - N

DIELDRIN 60571 0.002 HAL 0.002 HAL

DIETHANOLAMINE 111422 5 TR 5 TR

DIETHYL PHTHALATE 84662 5000 HAL 5000 HAL

DIETHYLAMINE 109897 5 TR 5 TR

DIGLYCIDYL ETHER (DGE) 2238075 5 TR 5 TR

DIMETHOATE 60515 7.3 Ingestion - N 20 Ingestion - N

DIMETHYL PHTHALATE 131113 5 TR 5 TR

DIMETHYL SULFATE 77781 5 TR 5 TR

DIMETHYLAMINE 124403 21 Ingestion - N 58 Ingestion - N

DIMETHYLAMINOAZOBENZENE, P- 60117 0.14 Ingestion - C 0.56 Ingestion - C

DIMETHYLBENZ[A]ANTHRACENE, 7,12- 57976 0.051 Ingestion - C 0.2 Ingestion - C

DIMETHYLBENZIDINE, 3,3'- 119937 0.072 Ingestion - C 0.28 Ingestion - C

DIMETHYLHYDRAZINE, 1,1- 57147 0.089 Inhalation - C 0.37 Inhalation - C

DIMETHYLPHENETHYLAMINE, ALPHA, ALPHA- 122098 5 TR 5 TR

DIMETHYLPHENOL, 2,4- 105679 730 Ingestion - N 2000 Ingestion - N

DINITRO-O-CRESOL, 4,6- 534521 5 TR 5 TR

DINITROBENZENE 528290 15 Ingestion - N 41 Ingestion - N

DINITROBENZENE, 1,3- 99650 1 HAL 1 HAL

DINITROPHENOL, 2,4- 51285 73 Ingestion - N 200 Ingestion - N

DINITROTOLUENE 25321146 0.98 Ingestion - C 3.8 Ingestion - C

DINITROTOLUENE, 2,4- 121142 0.05 HAL 0.05 HAL

DINITROTOLUENE, 2,6- (2,6-DNT) 606202 0.05 HAL 0.05 HAL

DINOSEB 88857 7 MCL 7 MCL

DIOXANE, 1,4- 123911 7 HAL 7 HAL

DIOXATHION 78342 5 TR 5 TR

DIPHENYLAMINE 122394 200 HAL 200 HAL

DIPHENYLHYDRAZINE, 1,2- 122667 0.83 Ingestion - C 3.2 Ingestion - C

DIQUAT 85007 20 MCL 20 MCL

DISULFOTON 298044 0.3 HAL 0.3 HAL

DIURON 330541 10 HAL 10 HAL

ENDOSULFAN 115297 220 Ingestion - N 230 Solubility

All MSCs in ug/L (Except asbestos).
Basis: MCL = Maximum Contaminant Level; HAL = Lifetime Health Advisory Level; N = Systemic effect;
C = Cancer effect (10^-5 risk level); TR = Threshold of Regulation; Solubility = Aqueous solubility

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

Residential Non-Residential

Basis for Basis for

REGULATED SUBSTANCE CASRN MSC MSC MSC MSC

ENDOSULFAN I (ALPHA) 959988 220 Ingestion - N 320 Solubility

ENDOSULFAN II (BETA) 33213659 220 Ingestion - N 330 Solubility

ENDOSULFAN SULFATE 1031078 220 Ingestion - N 220 Solubility

ENDOTHALL 145733 100 MCL 100 MCL

ENDRIN 72208 2 MCL 2 MCL

ENDRIN ALDEHYDE 7421934 11 Ingestion - N 31 Ingestion - N

ENDRIN KETONE 53494705 11 Ingestion - N 31 Ingestion - N

EPICHLOROHYDRIN 106898 4 HAL 4 HAL

ETHION 563122 0.001 Solubility 0.001 Solubility

ETHOXYETHANOL, 2- (EGEE) 110805 3900 Inhalation - N 8200 Inhalation - N

ETHYL ACETATE 141786 8800 Inhalation - N 18000 Inhalation - N

ETHYL ACRYLATE 140885 3.2 Inhalation - C 13 Inhalation - C

ETHYL BENZENE 100414 700 MCL 700 MCL

ETHYL ETHER 60297 1900 Inhalation - N 4100 Inhalation - N

ETHYL METHANESULFONATE 62500 5 TR 5 TR

ETHYLAMINE 75047 5 TR 5 TR

ETHYLENE CHLORHYDRIN 107073 5 TR 5 TR

ETHYLENE GLYCOL 107211 6000 HAL 6000 HAL

ETHYLENE OXIDE 75218 0.43 Inhalation - C 1.8 Inhalation - C

ETHYLENE THIOUREA 96457 0.3 HAL 0.3 HAL

ETHYLENEDIAMINE 107153 190 Inhalation - N 410 Inhalation - N

ETHYLENEIMINE 151564 0.01 Ingestion - C 0.039 Ingestion - C

ETHYLMETHACRYLATE 97632 880 Inhalation - N 1800 Inhalation - N

FAMPHUR 52857 5 TR 5 TR

FENAMIPHOS 22224926 2 HAL 2 HAL

FENSULFOTHION 115902 5 TR 5 TR

FLUORANTHENE 206440 230 Solubility 230 Solubility

FLUORENE 86737 390 Inhalation - N 820 Inhalation - N

FLUORINE 7782414 2200 Ingestion - N 6100 Ingestion - N

FLUOROTRICHLOROMETHANE (FREON 11) 75694 2000 HAL 2000 HAL

FONOFOS 944229 10 HAL 10 HAL

FORMALDEHYDE 50000 1000 HAL 1000 HAL

FORMIC ACID 64186 73000 Ingestion - N 200000 Ingestion - N

FURFURAL 98011 110 Ingestion - N 310 Ingestion - N

GLYPHOSATE 1071836 700 MCL 700 MCL

HEPTACHLOR 76448 0.4 MCL 0.4 MCL

HEPTACHLOR EPOXIDE 1024573 0.2 MCL 0.2 MCL

HEPTACHLOROBIPHENYL 28655712 0.086 Ingestion - C 0.33 Ingestion - C

HEXACHLOROBENZENE 118741 1 MCL 1 MCL

HEXACHLOROBIPHENYL 26601649 0.086 Ingestion - C 0.33 Ingestion - C

HEXACHLOROBUTADIENE 87683 1 HAL 1 HAL

HEXACHLOROCYCLOPENTADIENE 77474 50 MCL 50 MCL

HEXACHLORODIBENZO-P-DIOXINS 0.000044 Ingestion - C 0.00017 Ingestion - C

HEXACHLORODIBENZOFURANS 0.000044 Ingestion - C 0.00017 Ingestion - C

HEXACHLOROETHANE 67721 1 HAL 1 HAL

HEXACHLOROPHENE 70304 3 Solubility 3 Solubility

HEXACHLOROPROPENE 1888717 5 TR 5 TR

HEXAMETHYLENE DIISOCYANATE 822060 0.1 Ingestion - N 0.29 Ingestion - N

All MSCs in ug/L (Except asbestos).
Basis: MCL = Maximum Contaminant Level; HAL = Lifetime Health Advisory Level; N = Systemic effect;
C = Cancer effect (10^-5 risk level); TR = Threshold of Regulation; Solubility = Aqueous solubility

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

Residential Non-Residential

Basis for Basis for

REGULATED SUBSTANCE CASRN MSC MSC MSC MSC

HEXANE 110543 560 Inhalation - N 1200 Inhalation - N

HEXANONE, 2- (METHYL N-BUTYL KETONE) 591786 5 TR 5 TR

HYDRAZINE 302012 0.22 Ingestion - C 0.85 Ingestion - C

HYDROGEN CHLORIDE 7647010 56 Inhalation - N 120 Inhalation - N

HYDROGEN CYANIDE 74908 8.3 Inhalation - N 18 Inhalation - N

HYDROGEN FLUORIDE 7664393 16 Inhalation - N 34 Inhalation - N

HYDROGEN SULFIDE 7783064 2.8 Inhalation - N 5.8 Inhalation - N

HYDROQUINONE 123319 1500 Ingestion - N 4100 Ingestion - N

INDENO[1,2,3-CD]PYRENE 193395 0.022 Solubility 0.022 Solubility

IODOMETHANE 74884 5 TR 5 TR

IRON 7439896 11000 Ingestion - N 31000 Ingestion - N

IRON PENTACARBONYL 13463406 5 TR 5 TR

ISOAMYL ACETATE 123922 5 TR 5 TR

ISOBUTYL ACETATE 110190 5 TR 5 TR

ISOBUTYL ALCOHOL 78831 2900 Inhalation - N 6100 Inhalation - N

ISODRIN 465736 5 TR 5 TR

ISOPHORONE 78591 100 HAL 100 HAL

ISOPHORONE DIISOCYANATE 4098719 5 TR 5 TR

ISOSAFROLE 120581 5 TR 5 TR

KEPONE 143500 0.041 Ingestion - C 0.16 Ingestion - C

LEAD 7439921 5 MCL 5 MCL

LITHIUM 7439932 5 TR 5 TR

LITHIUM HYDRIDE 7580678 5 TR 5 TR

MALATHION 121755 200 HAL 200 HAL

MALEIC ANHYDRIDE 108316 3700 Ingestion - N 10000 Ingestion - N

MALEIC HYDRAZIDE 123331 4000 HAL 4000 HAL

MANGANESE 7439965 50 MCL 50 MCL

MANGANESE CYCLOPENTADIENYL TRICARBONYL 12079651 5 TR 5 TR

MELPHALAN 148823 0.005 Ingestion - C 0.02 Ingestion - C

MERCURY 7439976 2 MCL 2 MCL

METHACRYLONITRILE 126987 1.9 Inhalation - N 4.1 Inhalation - N

METHANOL 67561 4900 Inhalation - N 10000 Inhalation - N

METHOMYL 16752775 200 HAL 200 HAL

METHOXYCHLOR 72435 40 MCL 40 MCL

METHYL CHLORIDE 74873 3 HAL 3 HAL

METHYL ETHYL KETONE 78933 2800 Inhalation - N 5800 Inhalation - N

METHYL ETHYL KETONE PEROXIDE 1338234 22000 Ingestion - N 61000 Ingestion - N

METHYL HYDRAZINE 60344 5 TR 5 TR

METHYL ISOAMYL KETONE 110123 5 TR 5 TR

METHYL ISOBUTYL KETONE 108101 220 Inhalation - N 470 Inhalation - N

METHYL ISOCYANATE 624839 5 TR 5 TR

METHYL MERCAPTAN 74931 5 TR 5 TR

METHYL METHACRYLATE 80626 780 Inhalation - N 1600 Inhalation - N

METHYL METHANESULFONATE 66273 6.7 Ingestion - C 26 Ingestion - C

METHYL PARATHION 298000 2 HAL 2 HAL

METHYL TERT-BUTYL ETHER (MTBE) 1634044 20 HAL 20 HAL

METHYLAMINE 74895 5 TR 5 TR

METHYLCHLOROPHENOXYACETIC ACID (MCPA) 94749 10 HAL 10 HAL

All MSCs in ug/L (Except asbestos).
Basis: MCL = Maximum Contaminant Level; HAL = Lifetime Health Advisory Level; N = Systemic effect;
C = Cancer effect (10^-5 risk level); TR = Threshold of Regulation; Solubility = Aqueous solubility

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

Residential Non-Residential

Basis for Basis for

REGULATED SUBSTANCE CASRN MSC MSC MSC MSC

METHYLCHOLANTHRENE, 3- 56495 0.03 Ingestion - C 0.12 Ingestion - C

METHYLENE BIS (2-CHLOROANILINE), 4,4'- (MOCA) 101144 5.1 Ingestion - C 20 Ingestion - C

METHYLENE DIANILINE, 4,4- 101779 0.42 Ingestion - C 1.6 Ingestion - C

METHYLNAPHTHALENE, 2- 91576 28 Inhalation - N 58 Inhalation - N

MEVINPHOS 7786347 5 TR 5 TR

MITOMYCIN C 50077 0.000081 Ingestion - C 0.00031 Ingestion - C

MONOCROTOPHOS 6923224 5 TR 5 TR

NALED 300765 73 Ingestion - N 200 Ingestion - N

NAPHTHALENE 91203 20 HAL 20 HAL

NAPHTHOQUINONE, 1,4- 130154 5 TR 5 TR

NAPHTHYLAMINE, 1- 134327 0.084 Inhalation - C 0.35 Inhalation - C

NAPHTHYLAMINE, 2- 91598 0.37 Ingestion - C 1.4 Ingestion - C

NICKEL 7440020 100 MCL 100 MCL

NITRATE-NITROGEN (TOTAL) 14797558 10000 MCL 10000 MCL

NITRIC ACID 7697372 5 TR 5 TR

NITRITE-NITROGEN (TOTAL) 14797650 1000 MCL 1000 MCL

NITRO-O-TOLUIDINE, 5- 99558 20 Ingestion - C 78 Ingestion - C

NITROANILINE, M- 99092 0.56 Inhalation - N 1.2 Inhalation - N

NITROANILINE, O- 88744 0.56 Inhalation - N 1.2 Inhalation - N

NITROANILINE, P- 100016 2.1 Ingestion - N 5.8 Ingestion - N

NITROBENZENE 98953 5.6 Inhalation - N 12 Inhalation - N

NITROPHENOL, 2- 88755 600 Inhalation - N 1300 Inhalation - N

NITROPHENOL, 4- 100027 60 HAL 60 HAL

NITROPROPANE, 2- 79469 0.016 Inhalation - C 0.068 Inhalation - C

NITROQUINOLINE-1-OXIDE, 4- 56575 5 TR 5 TR

NITROSODI-N-BUTYLAMINE, N- 924163 0.027 Inhalation - C 0.11 Inhalation - C

NITROSODI-N-PROPYLAMINE, N- 621647 0.022 Inhalation - C 0.091 Inhalation - C

NITROSODIETHYLAMINE, N- 55185 0.0044 Ingestion - C 0.017 Ingestion - C

NITROSODIMETHYLAMINE, N- 62759 0.013 Ingestion - C 0.05 Ingestion - C

NITROSODIPHENYLAMINE, N- 86306 17 Inhalation - C 70 Inhalation - C

NITROSOMETHYLETHYLAMINE, N- 10595956 0.03 Ingestion - C 0.12 Ingestion - C

NITROSOMORPHOLINE, N- 59892 0.099 Ingestion - C 0.38 Ingestion - C

NITROSOPIPERIDINE, N- 100754 0.071 Ingestion - C 0.27 Ingestion - C

NITROSOPYRROLIDINE, N- 930552 0.32 Ingestion - C 1.2 Ingestion - C

NITROTOLUENE 88722 370 Ingestion - N 1000 Ingestion - N

NONACHLOROBIPHENYL 53742077 0.086 Ingestion - C 0.33 Ingestion - C

OCTACHLOROBIPHENYL 55722264 0.086 Ingestion - C 0.33 Ingestion - C

OCTYL PHTHALATE, DI-N- 117840 40 Solubility 40 Solubility

OSMIUM TETROXIDE 20816120 5 TR 5 TR

OXAMYL (VYDATE) 23135220 200 MCL 200 MCL

OZONE 10028156 1900 Ingestion - N 5300 Ingestion - N

PARATHION 56382 220 Ingestion - N 610 Ingestion - N

PCB-1016 (AROCLOR) 12674112 0.68 Inhalation - N 1.4 Inhalation - N

PCB-1221 (AROCLOR) 11104282 0.3 Inhalation - C 1.3 Inhalation - C

PCB-1232 (AROCLOR) 11141165 1.3 Ingestion - C 5.1 Ingestion - C

PCB-1242 (AROCLOR) 53469219 1.3 Ingestion - C 5.1 Ingestion - C

PCB-1248 (AROCLOR) 12672296 0.37 Ingestion - C 1.4 Ingestion - C

PCB-1254 (AROCLOR) 11097691 0.37 Ingestion - C 1.4 Ingestion - C

All MSCs in ug/L (Except asbestos).
Basis: MCL = Maximum Contaminant Level; HAL = Lifetime Health Advisory Level; N = Systemic effect;
C = Cancer effect (10^-5 risk level); TR = Threshold of Regulation; Solubility = Aqueous solubility

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

Residential Non-Residential

Basis for Basis for

REGULATED SUBSTANCE CASRN MSC MSC MSC MSC

PCB-1260 (AROCLOR) 11096825 1.1 Ingestion - C 4.3 Ingestion - C

PENTABORANE 19624227 5 TR 5 TR

PENTACHLOROBENZENE 608935 29 Ingestion - N 82 Ingestion - N

PENTACHLORODIBENZO-P-DIOXINS 0.0000088 Ingestion - C 0.000034 Ingestion - C

PENTACHLORODIBENZOFURANS 0.0000088 Ingestion - C 0.000034 Ingestion - C

PENTACHLOROETHANE 76017 5 TR 5 TR

PENTACHLORONITROBENZENE 82688 2.6 Ingestion - C 9.8 Ingestion - C

PENTACHLOROPHENOL 87865 1 MCL 1 MCL

PERCHLOROMETHYL MERCAPTAN 594423 5 TR 5 TR

PHENACETIN 62442 300 Ingestion - C 1200 Ingestion - C

PHENANTHRENE 85018 2900 Inhalation - N 6100 Inhalation - N

PHENOL 108952 4000 HAL 4000 HAL

PHENYL MERCAPTAN 108985 5 TR 5 TR

PHENYLENEDIAMINE, M- 108452 220 Ingestion - N 610 Ingestion - N

PHENYLENEDIAMINE, O- 95545 14 Ingestion - C 54 Ingestion - C

PHENYLENEDIAMINE, P- 106503 6900 Ingestion - N 19000 Ingestion - N

PHORATE 298022 7.3 Ingestion - N 20 Ingestion - N

PHOSGENE 75445 33 Inhalation - N 70 Inhalation - N

PHOSPHINE 7803512 0.83 Inhalation - N 1.8 Inhalation - N

PHOSPHORIC ACID 7664382 100 Ingestion - N 290 Ingestion - N

PHOSPHORUS AND COMPOUNDS 7723140 0.73 Ingestion - N 2 Ingestion - N

PHTHALIC ANHYDRIDE 85449 330 Inhalation - N 700 Inhalation - N

PICOLINE, 2- 109068 5 TR 5 TR

POLYCHLORINATED BIPHENYLS (PCB) 1336363 0.5 MCL 0.5 MCL

PRONAMIDE 23950585 50 HAL 50 HAL

PROPANOL, 1- 71238 5 TR 5 TR

PROPANOL, 2- (ISOPROPYL ALCOHOL) 67630 5 TR 5 TR

PROPARGYL ALCOHOL 107197 73 Ingestion - N 200 Ingestion - N

PROPIONIC ACID 79094 5 TR 5 TR

PROPIONITRILE (ETHYL CYANIDE) 107120 5 TR 5 TR

PROPYLENE GLYCOL MONOMETHYL ETHER 107982 26000 Ingestion - N 72000 Ingestion - N

PROPYLENE IMINE 75558 5 TR 5 TR

PROPYLENE OXIDE 75569 2.8 Ingestion - C 11 Ingestion - C

PYRENE 129000 140 Solubility 140 Solubility

PYRETHRUM 8003347 5 TR 5 TR

PYRIDINE 110861 9.7 Inhalation - N 20 Inhalation - N

QUINONE (p-BENZOQUINONE) 106514 5 TR 5 TR

RESORCINOL 108463 5 TR 5 TR

SAFROLE 94597 0.69 Inhalation - C 2.9 Inhalation - C

SELENIUM 7782492 50 MCL 50 MCL

SELENIUM HEXAFLUORIDE 7783791 5 TR 5 TR

SILVER 7440224 100 MCL 100 MCL

SIMAZINE 122349 4 MCL 4 MCL

SODIUM AZIDE 26628228 150 Ingestion - N 410 Ingestion - N

SODIUM BISULFITE 7631905 5 TR 5 TR

SODIUM FLUOROACETATE 62748 0.73 Ingestion - N 2 Ingestion - N

SODIUM HYDROXIDE 1310732 50 Ingestion - N 140 Ingestion - N

STRONTIUM CHROMATE 7789062 11 Ingestion - N 31 Ingestion - N

All MSCs in ug/L (Except asbestos).
Basis: MCL = Maximum Contaminant Level; HAL = Lifetime Health Advisory Level; N = Systemic effect;
C = Cancer effect (10^-5 risk level); TR = Threshold of Regulation; Solubility = Aqueous solubility

[Continued on next Web Page]

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[26 Pa.B. 3985]

[Continued from previous Web Page]

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

[Continued on next Web Page]

		Residential		Non-Residential
			Basis for		Basis for
REGULATED SUBSTANCE	CASRN	MSC	MSC	MSC	MSC
ACENAPHTHENE	83329	580	Inhalation - N	1200	Inhalation - N
ACENAPHTHYLENE	208968	580	Inhalation - N	1200	Inhalation - N
ACETALDEHYDE	75070	20	Inhalation - C	57	Inhalation - N
ACETIC ACID	64197	5	TR	5	TR
ACETIC ANHYDRIDE	108247	5	TR	5	TR
ACETONE	67641	3700	Ingestion - N	10000	Ingestion - N
ACETONITRILE	75058	58	Inhalation - N	122	Inhalation - N
ACETOPHENONE	98862	3700	Ingestion - N	10000	Ingestion - N
ACETYLAMINOFLUORENE, 2-(2AAF)	53963	0.17	Ingestion - C	0.67	Ingestion - C
ACROLEIN	107028	0.056	Inhalation - N	0.12	Inhalation - N
ACRYLAMIDE	79061	0.01	HAL	0.01	HAL
ACRYLIC ACID	79107	18000	Ingestion - N	51000	Ingestion - N
ACRYLONITRILE	107131	0.64	Inhalation - C	2.7	Inhalation - C
ALACHLOR	15972608	2	MCL	2	MCL
ALDICARB	116063	7	HAL	7	HAL
ALDRIN	309002	0.002	HAL	0.002	HAL
ALLYL ALCOHOL	107186	49	Inhalation - N	100	Inhalation - N
ALUMINUM	7429905	200	MCL	200	MCL
AMINOBIPHENYL, 4-	92671	0.03	Ingestion - C	0.12	Ingestion - C
AMITROLE	61825	0.028	Solubility	0.028	Solubility
AMMONIA	7664417	30000	HAL	30000	HAL
AMMONIUM CHLORIDE	12125092	7300	Ingestion - N	20000	Ingestion - N
AMMONIUM SULFAMATE	7773060	2000	HAL	2000	HAL
AMYL ACETATE, N-	628637	5	TR	5	TR
AMYL ACETATE, SEC-	626380	5	TR	5	TR
ANILINE	62533	10	Ingestion - N	29	Ingestion - N
ANTHRACENE	120127	1300	Solubility	1300	Solubility
ANTIMONY	7440360	6	MCL	6	MCL
ANTIMONY TRIOXIDE	1309644	15	Ingestion - N	41	Ingestion - N
ANTU	86884	5	TR	5	TR
ARAMITE	140578	27	Ingestion - C	100	Ingestion - C
ARSENIC	7440382	50	MCL	50	MCL
ASBESTOS	12001295	7,000,000 fibers/L	MCL	7,000,000 fibers/L	MCL
ATRAZINE	1912249	3	MCL	3	MCL
AZINPHOS-METHYL	86500	5	TR	5	TR
BARIUM AND COMPOUNDS	7440393	2000	MCL	2000	MCL
BAYGON (PROPOXUR)	114261	3	HAL	3	HAL
BENZENE	71432	5	MCL	5	MCL
BENZIDINE	92875	0.003	Ingestion - C	0.011	Ingestion - C
BENZO[A]ANTHRACENE	56553	0.91	Ingestion - C	3.5	Ingestion - C
BENZO[A]PYRENE	50328	0.2	MCL	0.2	MCL
BENZO[B]FLUORANTHENE	205992	0.91	Ingestion - C	3.5	Ingestion - C
BENZO[GHI]PERYLENE	191242	0.26	Solubility	0.26	Solubility
BENZO[K]FLUORANTHENE	207089	9.1	Ingestion - C	29	Solubility
BENZOIC ACID	65850	39000	Inhalation - N	82000	Inhalation - N
BENZYL ALCOHOL	100516	11000	Ingestion - N	31000	Ingestion - N
BENZYL CHLORIDE	100447	0.89	Inhalation - C	3.7	Inhalation - C
BERYLLIUM	7440417	4	MCL	4	MCL

[26 Pa.B. 3985]

[Continued from previous Web Page]

APPENDIX ATABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX ATABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX ATABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX ATABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX ATABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX ATABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX ATABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX ATABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

[Continued on next Web Page]

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*

APPENDIX A
TABLE 1--MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR GROUNDWATER IN AQUIFERS*