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ILL No -- J U 1 JU +� f I-D Z'J IVU UZU r VL s ' RECOMMENDED LIMITS IN WATER FOR PETROLEUM-BASED FUF,LCOMPONENTS TO PROTECT THE BENEFICIAL USE OF MUNICIPALAND DOMESTIC SUPPLY ' Aronratrc Hydrocarbons-- Benzene 10 µg11 California Primary MCL' 035 lig/l 1-in-a-million tncrcme Mal cancer nbk level(ObHHA)` n-Butylbenzene 45 µg/1 Cdlttorma Drinking water Action Level (AHS) Ethylbenzene 700 ppA Califorma and USEPA Primtdry MCL' ' 29 µg11 lUte and odor thresbold(UbEPA? Toluene 150 µg11 California Primary MCL' 42 llg/I Taste and odor threshold(US#rW Xylene-(-um of isomer-) 1750 µg/1 Calitonnia Primary MCT- 17 pg/l Paste and odor threshold(UShl?A) Aliphatic Hydrocarbons— n-Hexane 400 µg/I USEPA Health Advisory Hydrocarbon Mixtures— Diesel or Kerosene 100 ILEA Taste dnd odor threshold(USEW ' Gasoline 5 µgll taste and odor threshold(SWRCB)6 Addrhves— Lead 1 S µ9/l USEPA Drinking Water At-tion Level` ' Ethylcne dibrornide(EV13) 005 µg/l California and USEPA Primary MC:L1 Ethylene dichlorides 05 ltg(l California Primary MCL' 4 Owl ptg►t ' Methyl t-butyl ether(M 1 BE) 35 µg/1 California Unnking Watcr Action Uvcl (UH5) Polynaclear Aromatic Hydrocarbons(PANS or PNAs)--- 2 Carcinogenic PAW 00029 lig/1 1-in-a-million incremental cancer n-k level (ORM 1A) Acenaphthene 20 µg/1 USEPA NAWQC;11)(taste and odor) Anthracene 21W µg11 USEPA IMS reference dose'1 Benzo(a)pyrene 02 µg/1 California and USEPA Primary MCL' T)Iben7(a,h)anthracene 0(1085 lig/I I-in-a-million incremental cancer n-k level (()FH Naphthalene 20 µg/I USEPA Health Advisory l'rrrndry MCI.,,,,,health bd.%cd,but dlw rellml uthar ta.ttm relating to tet.hiiologie,dnd monomit,fc,lmbihty of attainment and monitoring in a wdtcr dvaribution%y+tem and at the tap,not nctcm anly in the water resource Derived from oral cancer potency factor published by the California Environmental Protection Agency,Office of Environmental Health Hazard Assessment assuming 2 fiters/day water consumption and 70 kg body weight Federal Register Vol 54.No 97 pp 22138 22139 4 Hcd)th advisory=.4OMµg11 ft)r 10 ddy cxpo%LLCe Gr lcs% No hfctime cxrxmijre advisory has been developed However,litetilne health advisonts are normally at least ten-told lower than 10-day advisories 1 hereloro,a level of 400 nil would be a rexNonabiL estimatc of a lifetime protective level for n•hcxdne s 1980 Health Advisory Document states that the 100µgm level should be health protective for 10 day-of exposure or less No lifetime exposure ddvisory hd%been developed However,lifetime health advisoneti are ' normally at least ten-told lower than IU-day advisories therefore.a level of IU pg/1 would be a reasonable estimate of a Lifetime health protective level for diesel or kerosene McKee&Wolt Water Quallry Criteria 2nd Ed State water Resources Control Board(1963. 1975)p 230 Liability under Pmposition 65 may also exist for responsible paries where levels in water exceed U 25 994 s Alw know sr. 1.2-dichloroethane a B4%cd on benzo(a)pyrene,see 22 CCR§120M(Proposition 61)for list of carcinogens criteria for individual PAH-may bi.4alt.ulatul by dividing LanLer rick lcvL1 by wuFlghting faLtorh(1' -s)on attached table 10 National Ambient Water Quality Criteria it Integrated Risk information System,listed value assumes 2 litenlday water consumption,70 kg body weight,and 20%relative source contribution from dnaking water ,1'f1 17 May 1991