[26 Pa.B. 3985]
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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 STRYCHNINE 57249 11 Ingestion - N 31 Ingestion - N STYRENE 100425 100 MCL 100 MCL SULFATE 14808798 260 Ingestion - N 730 Ingestion - N SULFIDE 18496258 5 TR 5 TR SULFOTEP 3689245 18 Ingestion - N 51 Ingestion - N SULFUR MONOCHLORIDE 10025679 5 TR 5 TR SULFURIC ACID 7664939 5 TR 5 TR TELLURIUM 13494809 5 TR 5 TR TELLURIUM HEXAFLUORIDE 7783804 5 TR 5 TR TEPP 107493 5 TR 5 TR TERBUFOS 13071799 0.9 HAL 0.9 HAL TETRACHLOROBENZENE, 1,2,4,5- 95943 11 Ingestion - N 31 Ingestion - N TETRACHLOROBIPHENYL 2051629 0.086 Ingestion - C 0.33 Ingestion - C TETRACHLORODIBENZO-P-DIOXIN, 2,3,7,8- (TCDD) 1746016 0.00003 MCL 0.00003 MCL TETRACHLORODIBENZOFURANS 0.000044 Ingestion - C 0.00017 Ingestion - C TETRACHLOROETHANE, 1,1,1,2- 630206 70 HAL 70 HAL TETRACHLOROETHANE, 1,1,2,2- 79345 0.7 Inhalation - C 3.1 Inhalation - C TETRACHLOROETHYLENE (PCE) 127184 5 MCL 5 MCL TETRACHLOROPHENOL, 2,3,4,6- 58902 1100 Ingestion - N 3100 Ingestion - N TETRAETHYL LEAD 78002 0.0037 Ingestion - N 0.01 Ingestion - N TETRAHYDROFURAN 109999 5 TR 5 TR TETRAMETHYL LEAD 75741 0.0037 Ingestion - N 0.01 Ingestion - N TETRANITROMETHANE 509148 5 TR 5 TR THALLIUM 7440280 2 MCL 2 MCL THIONAZIN 297972 5 TR 5 TR THIRAM 137268 180 Ingestion - N 510 Ingestion - N TIN 7440315 22000 Ingestion - N 61000 Ingestion - N TOLUENE 108883 1000 MCL 1000 MCL TOLUENE-2,4-DIISOCYANATE 584849 0.99 Ingestion - N 2.8 Ingestion - N TOLUIDINE, M- 95534 2.8 Ingestion - C 11 Ingestion - C TOLUIDINE, O 95534 3.7 Ingestion - C 14 Ingestion - C TOLUIDINE, P- 106490 3.5 Ingestion - C 13 Ingestion - C TOXAPHENE 8001352 3 MCL 3 MCL TRIBROMOMETHANE (BROMOFORM) 75252 100 MCL 100 MCL TRICHLOROBENZENE, 1,2,4- 120821 70 MCL 70 MCL TRICHLOROBENZENE, 1,3,5- 180703 40 HAL 40 HAL TRICHLOROBIPHENYL 2051618 0.086 Ingestion - C 0.33 Ingestion - C TRICHLOROETHANE, 1,1,1- 71556 200 MCL 200 MCL TRICHLOROETHANE, 1,1,2- 79005 5 MCL 5 MCL TRICHLOROETHYLENE (TCE) 79016 5 MCL 5 MCL TRICHLOROPHENOL, 2,4,5- 95954 3700 Ingestion - N 10000 Ingestion - N TRICHLOROPHENOL, 2,4,6- 88062 60 Ingestion - C 230 Ingestion - C TRICHLOROPHENOXYACETIC ACID, 2,4,5- (2,4,5-T) 93765 70 HAL 70 HAL TRICHLOROPHENOXYPROPIONIC ACID, 2,4,5- (2,4,5-TP) 93721 50 MCL 50 MCL TRICHLOROPROPANE, 1,2,3- 96184 5 HAL 5 HAL TRIETHYLAMINE 121448 5 TR 5 TR TRIETHYLPHOSPHOROTHIOATE, O,O,O- 126681 5 TR 5 TR TRIFLURALIN 1582098 5 HAL 5 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 TRIMETHYLAMINE 75503 19 Inhalation - N 41 Inhalation - N TRINITROBENZENE, 1,3,5- 99354 1.8 Ingestion - N 5.1 Ingestion - N TRINITROGLYCEROL (NITROGLYCERIN) 55630 5 HAL 5 HAL VANADIUM 7440622 2.1 Ingestion - N 5.8 Ingestion - N VANADIUM PENTOXIDE 1314621 330 Ingestion - N 920 Ingestion - N VINYL ACETATE 108054 560 Inhalation - N 1200 Inhalation - N VINYL BROMIDE 593602 1.4 Inhalation - C 5.7 Inhalation - C VINYL CHLORIDE 75014 2 MCL 2 MCL WARFARIN 81812 9.2E-07 Solubility 9.2E-07 Solubility XYLENES (TOTAL) 1330207 10000 MCL 10000 MCL ZINC AND COMPOUNDS 7440666 5000 MCL 5000 MCL *These MSCs apply to groundwater in aquifers. For groundwater which has a naturally occurring background total dissolved solids concentration greater than 2500 mg/L, the remediation standard for a regulated substance dissolved in the groundwater may be adjusted by multiplying the MSC in this table by 100.
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
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