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EXHIBIT #6 <br />State of California Department of <br />Office of Drinkinc, Water <br />SUMMARY <br />Maximum Contaminant Level (MCL) and Action Levels (AL) <br />(All values in milligrams per liter (mg/1) unless otherwise noted) <br />Constituent mCL AL <br />Inorganic Chemicals <br />Aluminum 1. <br />Arsenic 0.05 <br />Barium 1. <br />Cadmium 0.010 <br />Chromium 0.05 <br />Lead 0.05 <br />Mercury 0.002 <br />Nitrate (as NO3) 45. <br />Selenium 0.01 <br />Silver 0.05 <br />Fluoride <br /><53.7 Decrees Fahrenheit 2.4 <br />53.8 to 58.3 2.2 <br />58.4 to 63.8 2.0 <br />63.9 to 70.6 1.8 <br />70.7 to 79.2 1.6 <br />79.3 to 90.5 1.4 , <br />Radioactivity , <br />Gross Alpha panicle activity' 15 (pCifii 2 <br />Gross Beta particle activity 50 (pcifi) <br />Combined Radium-226 and Radium-228 5 (pCi4) , <br />Strontium-90 8 (pc74) <br />Tritium 20,0D0 (pCi/l) <br />Uranium 20 (Dco) <br />Total Trihalomethanes <br />(Sum of bromodichloromethane, dibromochloromethane, <br />bromo form, and chloroform) <br />0.10 <br />'Including Radium-226 but excluding Radon and Uranium <br />2pCi/1 = pico Curies per liter <br />MAF:MCLs.dot 10/18/90