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1 3291 S.Highway 99 Page 6 <br /> Soil Boring Installation <br /> ' GPE Project 471.2 <br /> August 17,2007 <br /> ' Groundwater Sample <br /> No detectable concentrations of any volatile or semi-volatile organic chemical <br /> ' were reported for the water sample. The following table iummarizes the <br /> concentrations of metals found in the water sample as well as the corresponding <br /> Maximum Contaminant Level (MCL) established for drinking water in <br /> California. <br /> Contaminant Actual MCL <br /> Concentration Level <br /> ' Arsenic 18 50 <br /> Barium 190 1,000 <br /> Chromium 14 50 <br /> Cobalt 1.2 NA <br /> ' Lead 1.4 50 <br /> Molybdenum 2.9 NA <br /> Vanadium 14 NA <br /> Units L L <br /> Concentrations reported as parts per billion(µg/L) <br /> MCL=California Maximum Drinking Water Concentration <br /> NA=No established standard <br /> 1 <br /> 1 <br /> 2937 Veneman Avenue, Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 <br /> Modesto, Ca 95356 Fax: (209)569-0295 <br />