Laserfiche WebLink
TABLE 7. BACKGROUND CONCENTRATIONS OF METALS IN SOIL(mg/kg) <br /> CITY OF STOCKTON HOUSING AND REDEVELOPMENT AGENCY <br /> STOCKTON,CALIFORNIA <br /> California Data' <br /> Metal Arithmetic Mean Std.De, Geometric Mean Geometric Std.Dev. flan e <br /> Aluminum 73,000 17,000 71,000 13,000 30,000-106,000 <br /> Antimony 0.6 0.39 0.5 1.8 0.15-1.95 <br /> Arsenic 3.5 2.5 2.8 2.1 0.59-11 <br /> Barium 509 210 468 1.54 1,33-1,400 <br /> Beryllium 1.28 0.52 1.14 1.79 0.25-2.7 <br /> Cadmium 0.36 0.31 0.26 2.27 0.05-1.7 <br /> Chromium III,Total 122 223 76 2.27 23-1,579 <br /> Cobalt 14.9 9.2 12.6 1.79 2.7-46.9 <br /> Copper 28.7 19.3 24.0 1.3 9.1-96.4 <br /> Lead 23.9 13.8 21.7 1.5 12.4-97.1 <br /> Mercury 0.26 0.21 0.2 2.12 0.05-0.9 <br /> Molybdenum 1.3 1.5 0.9 2.23 0,1-9,6 <br /> Nickel 57 80 36 2.4 9.0-509 <br /> Selenium 0.058 0.084 0.028 2.89 0.015-0.43 <br /> Silver 0.8 1.43 0.41 2.64 0.1-8.3 <br /> Thallium 0.56 0.19 0.52 1.46 0.17-1.1 <br /> Vanadium 112 53 101 2 39-288 <br /> Zinc 149 32 145 188-236 <br /> mg/kg=milligrams per kilograms <br /> Std.Dev.=Standard Deviation <br /> ' Bradford et al.,"Background Concentrations of Trace and Major Elements in California Soils",Kearney <br /> Foundation Special Report,UC-Riverside and CAL-EPA,Department of Toxic Substances Control,March 1996. <br /> SOMA 99.2218 <br /> 1 of 1 12/10/99 <br />