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Table 4:Soil Sample CAM 17 Metals Laboratory Results (mg/kg) <br /> Background <br /> Element B2-5 133-5 B7-5 118-4; I Concentrations* <br /> Antimony(Sb) <3.0 <3.0 1 <3.0 <3.0 < 3.0 <3.0 1 0.21 - 0.99 <br /> Arsenic(As) <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 12** <br /> Barium (Ba) 140 150 110 180 240 250 299 - 719 <br /> Beryllium Be) < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 0.76 - 1.8 <br /> Cadmium(Cd) <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 0.05 - 0.67 <br /> Chromium (Cr) 19 13 15 18 17 21 0 - 345 <br /> Cobalt(Co) 12 14 9.8 15 8.5 14 5.7 - 24.1 <br /> Copper(Cu) 20 18 1 16 23 1 20 23 9.4 - 48 • <br /> Lead (Pb) 5.2 5.3 5.1 6.4 3.8 6.4 10.1 - 37.7 <br /> Mercury(H ) <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 1 0.05 - 0.47 <br /> Molybdenum(Mo) <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 0 - 2.8 <br /> Nickel(Ni) 18 16 14 21 14 21 0 - 137 <br /> Selenium (Se) <br /> <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 0 - 0.142 <br /> Silver(Ag) <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 0 - 2.23 <br /> Thallium (TI) <br /> <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 0.37 - 0.75 <br /> Vanadium 44 47 33 42 47 78 59 - 165 <br /> Zinc Zn 42 36 34 43 31 42 117 - 181 <br /> Notes: <br /> *From Kearney Foundation of Soil Science March 1996 report Background Concentrations of Trace and Major Elements in California Soils. <br /> Background concentrations of metals are considered to be within one standard deviation from the mean metal concentrations determined by the study. <br /> Concentrations indicated in milligrams per kilogram(mg/kg). <br /> **From California Department of Toxic Substance Control March 2008 report Determination ofa Southern California Regional Background Arsenic <br /> Concentration in Soil. • <br /> CAM=California Administrative Manual <br /> mg/kg=milligrams per kilogram <br /> <=not detected above indicated laboratory Practical Quantitation Limit <br /> Phase II Subsurface Investigation <br /> White Arrow <br /> 2402 South California Street <br /> Stockton,California 95206 <br /> Partner Project Number 14-117725.1 <br /> May 2014 <br />