Laserfiche WebLink
90189-T CDN-1 Woodward-Clyde Conaultants <br /> Table 2-2• SUMMARY <br /> BAS£OOF R UNDWATERERIA (PHASE CONTAMINATION DATA)AND COMPARISON WITH <br /> HEALTH- <br /> Heaith- <br /> Average Range of Based Background <br /> Concentrationsg Concentration Criteria Wella <br /> 5.3-9.3 7.5 <br /> PN 6.3 <br /> TDS (mg/1) 1933 330-5250 50060f-1000b,c 1925-2625 <br /> Specific <br /> Conductance 2970 520-1000 g00b-1600b'c 3500 <br /> (µmhos) <br /> Copper (mg/1) 1.16 0.025-6.2 O.Olf-1.Ob'c 0.034 <br /> Lead (inorganic) 0.05_3.1 0.05btc,f_5.04 <0.05 <br /> (mg/1) 0.19 <br /> Nickel (mg/1) 0.52 <br /> 0.04-1.5 0.7e <0.04 <br /> Tin (mg/7) 0.11 0.1-2.8 <br /> I.Oe '40.10 <br /> a MW-16 is the background well . <br /> b Recommended and maximum concentrations from California Administrative <br /> Code Title 22, oivision 4, Article 4, Chemical and Physical Quality -- <br /> nt a <br /> alth of humans <br /> whenmcontinuallyausedeforsdrinking which roreculinary kPurposesto the ,eSection 64435, <br /> Tables 2, 6, 7. <br /> c Based on Federal Drinking Water Standards - U.S. Environmental <br /> Protection Agency (Federal Register, Vol. 40, No. 248, Dec. 1975). <br /> d Federal Register, Vol. 44, No. 233, 1979, revised 1981. Immediate <br /> health risk. <br /> e Based on oral chronic dose Calculation- <br /> ? Basin Plan, Regional Water Quality Control Board, Central Valley <br /> Section. <br /> 9 Phase II RI data (WCC 1987a) ; data are based on MW-8, MW-10, and MW- <br /> 11. Metal concentrations represent total values. <br /> 2-9 <br /> 8 d Wd T£:S £661 Te'NIf E90£ SSE 916 :-81 MOM Faltc�1 leu4uao ; WOHA <br />