Concentrations of VOCs in Groundwater Associated with Land Uses in Ulsan Area
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(2) . ÆæÏö8ÞÖææ~>~ ' 8ïß9. J × Á`÷×. ]æî¶ö\ö Concentrations of VOCs in Groundwater Associated with Land Uses in Ulsan Area Uk Yun* and Byong-Wook Cho Korea Institute of Geoscience and Mineral Resources, Daejon 305-350, Korea.
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(101) Sample No.. T (oC). pH. 81014 82033 83016 83004 81013 80020 82018 82078 82074 80013 80037 80001 81021 80003 82071 80031 Residential & 81012 Business 80004 80017 81005 80021 81010 80006 81015 81022 80005 80014 82072 80002 80011 81023 82027 81006. 18.9 21.7 16.8 16.1 16.3 15.9 17.3 17.2 17.9 17.1 16.4 20.1 16.4 19.2 17.6 17.9 16.6 17.2 17.8 18.2 17.5 18.1 16.8 19.3 21.4 19.2 17.2 16.9 17.5 17.8 18.1 16.7 17.6. 6.5 7.2 7.0 7.6 5.8 4.6 7.7 7.5 7.2 6.8 7.1 6.9 6.8 7.4 6.7 7.4 7.8 6.4 7.1 5.5 6.5 6.2 6.4 5.9 6.2 7.5 5.8 7.1 6.8 6.5 5.9 7.3 5.8. Land Use. EC Eh DO (µS/cm) (mV) (mg/L) 303 803 363 286 378 116 1007 783 466 711 684 761 678 785 850 323 409 285 671 791 768 664 450 316 408 488 136 31340 917 521 702 1003 750. 190 103 218 326 137 259 520 161 90 186 179 -56 149 -28 208 152 181 187 209 213 176 56 -3 216 166 69 251 35 124 200 205 104 240. 4.9 4.2 4.4 2.8 4.9 6.4 1.6 5.8 1.3 2.2 2.4 0.9 2.3 0.0 7.3 1.8 0.9 5.9 7.0 4.5 1.1 4.2 0.1 4.6 0.6 3.4 6.7 3.7 0.4 2.2 3.0 0.6 1.7. ÆæÏêê æ~>~ .8z> ï B æ~> òöB ¦ÂB 92&V Wª >º B ªCÏ 7öB C B Wª {>îº 7DEOH
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(108) LQ WKH JURXQGZDWHU DVVRFLDWHG ZLWK WKH ODQG XVH Component. CFC12 CFC11 CM DCM PCM. THM THM THM THM CA 1,1-DCA 1,2-DCA 1,1,1-TCA 1,1,2-TCA VC 1,1-DCE Trans-DCE Cis-DCE TCE PCE. Molecular Formula CF2Cl2 CFCl3 CH3Cl CH2BrCl CH2Cl2 CCl4 CH2Br2 CH3Br CHCl3 CHBrCl2 CHBr2Cl CHBr3 C2H5Cl C2H4Cl2 C2H4Cl3 C2H3Cl3 C2H3Cl4 C2H3Cl C2H2Cl2 C2H2Cl2 C2H2Cl2 C2HCl3 C2Cl4. Agricultural (sample number). Forestry (sample number). MCL 80009. 80023. 82048. 83001. 80008. Halogenated Aliphatic Hydrocarbons NA NA NA NA 5 5 NA NA 0.7 100 0.5 0.2 1.0 1.1. 82026. 81008. 83022. 83006. 81007. 83017. 82047. 0.4. 15.5. 0.5. 0.2 0.4. 0.3. 1.0. 0.8 0.3. NA NA 5 200 5 2 7 100 70 5 5. 0.8. 1.7 0.3. 0.9. 0.2. 330. BTEX BTEX BTEX BTEX BTEX. 7.1. 0.3. 16.3 8.4 9.0. 1$ 1RW $SSOLFDEOH %ODQN 1RW 'HWHFWHG 0&/ 86$ 5HTXLUHPHQWV. 0.2. 5 100 700 10000 100 NA NA NA NA NA 20. 0.1. 0.1. . 0.3 0.9. . MTBE. C6H6 C7H8 C8H10 C8H10 C8H10 C6H5Cl C6H4Cl2 C6H4Cl2 C9H12 C9H12 C10H8 OC(CH3)4. 3.1. 0.1. Petroleum Hydrocarbons Benzene Toluene Ethylbenzene m-xylene o-xylene Chlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene 1,3,5-trimethylbenzene 1,2,4-trimethylbenzene Naphthalene Methyl-tert-buthyl-ether. 83018. ÆæÏö 8 ÞÖæ æ~>~ 92&V ï ß9. Dichlorodifluoromethane Trichorofluoromethane Chloromethane Bromochloromethane Methylene chloride Carbon tetrachloride 1,2-dibromomethane Bromomethane chloroform Bromodichloromethane Dibromochloromethane Bromoform Chloroethane 1,1-dichloroethane 1,2-dichloroethane 1,1,1-trichloroethane 1,1,2-trichloroethane Vinylchloride 1,1-dichloroethene Trans-1,2-dichloroethene Cis-1,2-dichloroethene Trichloroethylene Tetrachloroethylene. Remark.
(109) &RQWLQXHG. . . Industrial (sample number) Component. MCL 82058 82052 83064 82098 82061 82082 82083 82059 82101 82060 82053 82055 82099 83058 82057 83065 83057 82054 82096 Halogenated Aliphatic Hydrocarbons NA NA NA NA 5 5 NA NA 100. Benzene Toluene Ethylbenzene m-xylene o-xylene Chlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene 1,3,5-trimethylbenzene 1,2,4-trimethylbenzene Naphthalene Methyl-tert-buthyl-ether. 5 100 700 10000. NA NA 5 200 5 2 7 100 70 5 5. 100 NA NA NA NA NA 20. 0.1 0.2. 0.3. 0.1. 0.3. 0.5 0.3. 0.4. 1.1. 0.5. 1.0. 1.0. 1.0. 0.2. 0.2. 0.1. 5.3. 2.2. 2.8. 0.5. 1.8 0.3. 0.1. 0.3. 2.0 2.4 2.6. 0.5 0.8. 8.7. 6.1. 10 7.5 3.3 0.4. 2.0 0.9. 0.4 0.2. 1.2. 0.7 140. 2.1. 64. 2.7 1.7. 1.3 6.6 0.5 7.6. 0.1 1.4 15.5. 1.0 19 4.7 84. 19. 0.3 0.2. 1.0. 0.3. 6.4. 0.2 0.3 0.3 0.1. 0.1 0.2. 0.2. 0.3 0.1 0.1 Petroleum Hydrocarbons 0.1 0.2 0.2 0.1. 0.3 0.2. 0.1 0.7. 0.3 0.1 0.1. 0.2 0.1. 0.2. 0.1. 0.2 0.6 0.1. 0.1. 5.4 13. 39 2.6 0.3 0.3 3.4. 0.2. 2.4 62 0.1. 0.2. 0.2 1.5 0.1 0.1 0.1. 2.0. 1.2. 0.5. 1.0. 0.4. J ×Á`÷×. Dichlorodifluoromethane Trichorofluoromethane Chloromethane Bromochloromethane Methylene chloride Carbon tetrachloride 1,2-dibromomethane Bromomethane chloroform Bromodichloromethane Dibromochloromethane Bromoform Chloroethane 1,1-dichloroethane 1,2-dichloroethane 1,1,1-trichloroethane 1,1,2-trichloroethane Vinylchloride 1,1-dichloroethene Trans-1,2-dichloroethene Cis-1,2-dichloroethene Trichloroethylene Tetrachloroethylene.
(110) . &RQWLQXHG Residential & Business (sample number) Component. MCL 81006. 82027. 80002. 80011. 81023. 80005. 80014. 82072. 81022. 80006. 81015. 80021. 81005. 80017. 81010. 80004. 80031. Halogenated Aliphatic Hydrocarbons NA NA NA NA 5 5 NA NA 100. 0.1. 0.7. 0.2. 0.3. 0.1. 0.2. 0.2. 0.6. 0.3. 0.3. 0.7. 0.3. 0.2 0.1. 0.1. 0.7. 0.5. 0.5. 0.5. 0.5. 0.3. 0.7. 0.3. 0.5. ß9. 5 100 700 10000. 0.3 0.2. 0.1. 0.3. . 100 NA NA NA NA NA 20. 0.2. 0.1 0.1. Petroleum Hydrocarbons Benzene Toluene Ethylbenzene m-xylene o-xylene Chlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene 1,3,5-trimethylbenzene 1,2,4-trimethylbenzene Naphthalene Methyl-tert-buthyl-ether. 0.5. 8 ï. NA NA 5 200 5 2 7 100 70 5 5. 0.8. ÆæÏö 8 ÞÖæ æ~>~ '. Dichlorodifluoromethane Trichorofluoromethane Chloromethane Bromochloromethane Methylene chloride Carbon tetrachloride 1,2-dibromomethane Bromomethane chloroform Bromodichloromethane Dibromochloromethane Bromoform Chloroethane 1,1-dichloroethane 1,2-dichloroethane 1,1,1-trichloroethane 1,1,2-trichloroethane Vinylchloride 1,1-dichloroethene Trans-1,2-dichloroethene Cis-1,2-dichloroethene Trichloroethylene Tetrachloroethylene.
(111) &RQWLQXHG. . . Residential & Business (sample number) Component. MCL 81012. 82071. 80003. 81021. 80001. 80037. 80013. 82074. 82078. 82018. 1.9. 1.1. 1.4. 0.1. 0.3. 81013. 80020. 83004. 83016. 82033. 81014. Halogenated Aliphatic Hydrocarbons NA NA NA NA 5 5 NA NA 100. NA NA 5 200 5 2 7 100 70 5 5. 0.8. 0.2. 0.2. 0.2. 0.7. 4.4. 0.2. 10.6. 00.8 18.1. 2.1 0.5 0.3. 0.2. 1.5. 1.0. 0.1. 0.3. 0.2. 0.4. 0.5 0.9 1 0.5. 0.2. 0.2. 0.1 0.3. 00.6. 0.3. 00.8 02.3 05.5 12.7. 00.5 14.6 00.4 03.9. 00.3. 0.3. 1.0. 12.2 3.1 0.5. 0.3 4.6. 0.1 0.1. 2.8 0.5. 0.2 0.3 0.1. 07.6 01.4 01.7 00.2. 7.7 03.5. Petroleum Hydrocarbons Benzene Toluene Ethylbenzene m-xylene o-xylene Chlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene 1,3,5-trimethylbenzene 1,2,4-trimethylbenzene Naphthalene Methyl-tert-buthyl-ether. 5 100 700 10000 100 NA NA NA NA NA 20. 0.9. 0.2. 1.1. 0.1. 0.1 0.1. 0.1 0.1 0.4. 4.1. 0.1. 0.1. 00.1. 00.3. J ×Á`÷×. Dichlorodifluoromethane Trichorofluoromethane Chloromethane Bromochloromethane Methylene chloride Carbon tetrachloride 1,2-dibromomethane Bromomethane chloroform Bromodichloromethane Dibromochloromethane Bromoform Chloroethane 1,1-dichloroethane 1,2-dichloroethane 1,1,1-trichloroethane 1,1,2-trichloroethane Vinylchloride 1,1-dichloroethene Trans-1,2-dichloroethene Cis-1,2-dichloroethene Trichloroethylene Tetrachloroethylene.
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(157) . Analyte. Concentration in Most Contaminated Zone. Oxygena Oxygena. <.5 mg/L >1 mg/L. Tolerated; suppresses reductive dechlorination at higher concentrations Vinyl chloride may be oxidized aerobically, but reductive dechlorination will not occur. Nitratea Manganese(II). <1 mg/L >1 mg/L. May compete with reductive pathway at higher concentrations Anaerobic oxidation of cDCE possible. 2b 2b. Interpretation/Comments. 3b -3bb. Iron (ll). >1 mg/L. Reductive pathway possible; anaerobic oxidation of vinyl chloride to CO2 possible. <20 mg/L. May compete with reductive pathway at higher concentrations. 3b 2b. >1 mg/L. Reductive pathway possible. 3b. Ultimate reductive breakdown product Vinyl chloride accumulates Vinyl chloride oxidizes. 2b 3b. Methanea Oxidation reduction potentiala pHa DOC. >.01 mg/L >1 <1 <50 mV against Ag/AgCl 5<pH<9 >20 mg/L >20oC. Reductive pathway possible. <50 mV = 1. Tolerated range for reductive pathway. <-100 mV = 2. Carbon and energy source; drives dechlorination; can be natural or anthropogenic. 2b. At T>20oC, chemical process can be accelerated( ). 1b. Carbon dioxide Alkalinity. >2x background >2x background. Ultimate oxidative breakdown product Results from interaction of carbon dioxide with aquifer minerals. 1b 1b. Chloridea. >2x background >1 nM <1 nM. Product of organic chlorine; compare chloride in plume to background conditions. 2b. Reductive pathway possible; vinyl chloride may accumulate Vinyl chloride oxidized. 3b. Intermediates resulting from biodegradation of aromatic compounds; carbon and energy source Carbon and energy source; drives dechlorination. 2b 2b. Material released Material released Product of perchloroethene dehalogenation Material released Product of trichloroethene biodegradation; if amount of cis-1,2-dichloroethene is greater than 80% of total dichloroethene, it is likely a product of trichloroethene or perchloroethylene dehalogenation.. 0b 0b 2b. Material released Product of dichloroethene biodegradation. 0b 2b. Product of vinyl chloride dehalogenation. >0.01 mg/L=2. Hydrogen Volatile fatty acids BTEXa. >0.1 mg/L >0.1 mg/L. Perchloroethenea Trichloroethenea Dichloroethenea Vinyl chloridea Ethene/Ethane. <0.1 mg/L. Chloroethanea 1,1,1-Trichloroethanea. Product of vinyl chloride biodegradation under reducing conditions Material released. 1,1-dichloroethenea. Product of trichloroethene degradation or abiotic degradation of 1,1,1-trichloroethane.
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