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r Jfl _ wIIH Il "ri I _ Nt�c <br /> F1J4J-1 <br /> Apnl 28, 1992 <br /> Updated <br /> SUMMARY OF TYPICAL METALS CONCENTRATIONS <br /> IN SOILS AND SLFRFICIAL NiATERIALS <br /> FROM U.S.G.S. PROFESSIONAL PAPER 1270 <br /> FOR THE CONTERMINOUS UNITED STATES <br /> (Values are in ppm unless % shown) <br /> Metais Southbay Northbay S F us Mean Notes <br /> Aluminum _ 0% 7 0 100%+ 4 7ciub <br /> Antimony *+ - 1--10 <1 0 48 1 <br /> Arsenic *+$ 6.5 16-65 10 5.2 1 <br /> Banum +$ 700 500 1000-3000 440 1 <br /> Beryllium *+ <1 <1 <1 0.63 1 <br /> Boron <20 50 30 26 <br /> Bromine - 1 1-3 0 0 6-0 8 056 <br /> Cadmium *+$ - - - 1, 2 <br /> Calcium 1.9-28% 35- 52'4 1.8-2.8% 0.9290 <br /> Carbon - 5-8% 0.1-0.5% 1.6% <br /> C--n= <150 <150 <150 63 <br /> Chronuum *+ 100-704 100-700 100-700 37 1 <br /> Cobalt + 15-70 15-70 15-70 6.7 1 <br /> Copper *+ 30 5+}-300 50-300 17 1 <br /> Fluonne 180-270 - - 210 <br /> Gallium 30-70 20 15 13 <br /> Germatnum - 1 5°c 10% 12% <br /> Iodine - 0 6-1j* <0 5 0.75 <br /> Iron 3 0% 5-104io 5-10% 18% <br /> Lanthanum <30 30-50 <30 30 <br /> ' Lead *+$ 30-300 30-300 30-300 16 1 <br /> Lithium 30 41-150 16 20 <br /> Magnessmm 1.5-5% 10% 1.5-5% 0.44% <br /> Manganese 500 500 1000-7000 330 <br /> Mercury *+$ 0.2-1.3 082- 13 0 2-1 3 058 1 <br /> .,lolytidenum + <3 <3 <3 0 59 1 <br /> • Neodymium C70 70 - 40 <br /> Nickel *+ 30-200 30-200 30-200 13 1 <br /> Niobium <10 <10 <10 3 <br /> 1 <br /> Phosphorus 820-2400 - - 260 <br />