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GW-4 <br /> April 8, 2021 <br /> Page 3 <br /> Table 1 —Summary of VOCs <br /> CAS Number Parameter Standard (µg/L) <br /> 71-55-6 1,1,1-Trichloroethane 14,000 or 200' <br /> 79-34-5 1,1,2,2-Tetrachloroethane 0.18 <br /> 79-00-5 1,1,2-Trichloroethane 2.8 to 5m <br /> 75-35-4 1,1-Dichloroethene 7m <br /> 96-18-4 1,2,3-Trichloropropane 0.00037 <br /> 120-82-1 1,2,4-Trichlorobenzene 70m <br /> 96-12-8 1,2-Dibromo-3-Chloropropane 0.2M <br /> 106-93-4 1,2-Dibromoethane 0.018 <br /> 95-50-1 1,2-Dichlorobenzene 600M <br /> 107-06-2 1,2-Dichloroethane 0.38 to 5m <br /> 78-87-5 1,2-Dichloropropane 0.52 to 5m <br /> 541-73-1 1,3-Dichlorobenzene 94 <br /> 106-46-7 1,4-Dichlorobenzene 75m <br /> 591-78-6 2-Hexanone 35 <br /> 67-64-1 Acetone 6300 <br /> 71-43-2 Benzene 5.0"' <br /> 108-86-1 Bromobenzene 56 <br /> 75-27-4 Bromodichloromethane 0.56 <br /> 75-25-2 Bromoform 4 <br /> 56-23-5 Carbon tetrachloride 0.5 to 5m <br /> 108-90-7 Chlorobenzene 100M <br /> 67-66-3 Chloroform 3.5 <br /> 156-59-2 cis-1,2-Dichloroethene 14 to 70m <br /> 124-48-1 Dibromochloromethane 14 <br /> 100-41-4 Ethylbenzene 700m <br /> 75-09-2 Methylene Chloride 5.6 or 5' <br /> 91-20-3 Naphthalene 140 <br /> 100-42-5 Styrene l00m <br /> 127-18-4 Tetrachloroethene 17 or 5m <br /> 108-88-3 Toluene 560 to 1,OOOM <br /> 156-60-5 trans-1,2-Dichloroethene 140 or 100m <br /> 79-01-6 Trichloroethene 5m <br /> 75-01-4 Vinyl chloride 0.023 to2m <br /> 1330-20-7 Xylenes(total)6 1,400 to 10,000m <br /> GW-4 SW22 Sampling Plan RevFINAL <br />