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Gurdon Lee Boggs - 3 - 30 May 2000 <br /> RECOMMENDED LIMITS IN WATER FOR PETROLEUM-BASED FUEL COMPONENTS <br /> TO PROTECT THE BENEFICIAL USE OF MUNICIPAL AND DOMESTIC SUPPLY <br /> Aromatic Hydrocarbons— <br /> Benzene 1 <br /> 1.0 pg/l California Primary MCL' <br /> 0.35 µg/l 1-in-a-million incremental cancer risk level (OEHHA)2 <br /> 0.14 pg/l Draft CA Public Health Goal in drinking water (OEHHA) <br /> n-Butylbenzene 45 µg/l California Drinking Water Action Level (DHS) <br /> Ethylbenzene 700 µg/l California and USEPA Primary MCL' <br /> 29 pg/l Taste and odor threshold(USEPA)3 <br /> Isopropylbenzene (Cumene) 700 pg/l USEPA IRIS reference dose' <br /> 0.8 µg/1 Taste and odor threshold 12 <br /> Toluene 15.0 µg/1 California Primary MCL' <br /> 150 µg/1 California Public Health Goal in drinking water(OEHHA) <br /> 42 gg/l Taste and odor threshold (USEPA)3 <br /> 1,3,5-Trimethylbenzene 15 µg/l Taste and odor threshold 12 <br /> Xylenes (sum of isomers) 1,750 µg/l California Primary MCL' <br /> 17 pg/l Taste and odor threshold(USEPA)3 <br /> Aliphatic Hydrocarbons— <br /> n-Hexane 400 pg/1 USEPA Health Advisory4 <br /> 6.4 µg/l Taste and odor threshold 12 <br /> Hydrocarbon Mixtures— <br /> Diesel or Kerosene 100 pg/l Taste and odor threshold (USEPA)5 <br /> Gasoline 5 µg/1 Taste and odor threshold (SWRCB)6 <br /> Additives— <br /> Lead 15 pg/l CA and USEPA Drinking Water MCL Action Lever <br /> 2 µg/l California Public Health Goal in drinking water(OEHHA) <br /> Ethylene dibromide (EDB) 0.05 pg/1 California and USEPA Primary MCL' <br /> $ <br /> 0.0097 pg/l 1-in-a-:pillion incremental cancer risk level (OEHHA)2 <br /> Ethylene dichloride0.5 µg/1 California Primary MCL' <br /> 0.4 pg/l California Public Health Goal in drinking water(OEHHA) <br /> 7,000 µg/1 Taste and odor threshold 12 <br /> Methyl t-butyl ether(MtBE) 13 µg/l California Primary MCL 13 <br /> 5 pg/l California Secondary MCL <br /> Di-isoproply ether(DIPE) 0.8 µg/l Taste and odor threshold 12 <br /> t-Butyl Alcohol (TBA) 12 pg/l California Drinking Water Action Level (DHS) <br /> 290,000 µg/1 Taste and odor threshold 12 <br /> Ethanol 760,000 µg/l Taste and odor threshold 12 <br /> Methanol 3,500 pg/l USEPA IRIS reference dose" <br /> 740,000 µg/l Taste and odor threshold 12 <br /> Footnotes are listed on the next page. <br />