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November 16, 2005 <br /> • NOA Project Number: E05120B <br /> Table 2. Results of Metals Analysis—Surface Soils <br /> Metal Units PRG7 S-3 S-5 S-6 S-7 <br /> Antimony (Sb) mg/Kg 31 <2 <2 <2 N/A <br /> Arsenic (As) mg/Kg 0.39* 4.7 1.2 2.8 N/A <br /> Barium (Ba) mg/Kg 5,400 220 200 170 N/A <br /> Beryllium (Be) mg/Kg150 <1 <1 <1 N/A <br /> Cadmium(Cd) mg/Kg 37 12 <1 <1 N/A <br /> Chromium (Cr) mg/Kg 210 31 22 19 N/A <br /> Cobalt(Co) mg/Kg 900 6.1 8.3 6.4 N/A <br /> Copper(Cu) mg/Kg 3,100 58 34 18 N/A <br /> Lead (Pb) mg/Kg 150 85 27 27 8.4 <br /> Mercury-(Hg) mg/Kg 23 0.10 0.13 <0.10 N/A <br /> Molybdenum (Mo) mg/Kg 390 8.9 <I 1.6 N/A <br /> Nickel (Ni) mg/Kg 1,600 23 19 15 N/A <br /> Selenium (Se) mg/Kg 390 <1 <1 <1 N/A <br /> Silver(Ag) mg/Kg 390 <1 <1 <1 N/A <br /> Thallium (Tl) mg/Kg 5.2 <1 <1 <1 N/A <br /> Vanadium (V) mg/Kg 78 42 45 43 N/A <br /> Zinc (Zn) mg/Kg 23,000 500 310 98 N/A <br /> N/A=Not Analyzed. <br /> *Cancer Fndpoint. <br /> 3.4 Discussion of Results <br /> No kerosene, diesel,gasoline, or BTEX were detected in the soil samples collected.Though there <br /> are no specific action levels for petroleum hydrocarbons in soil,NOA's experience has been that <br /> 1,000 parts per million (ppm) of motor oil is a level considered actionable by many regulatory <br /> agencies. Three of the samples collected were found to have motor oil above this threshold. Of <br /> these, two samples were collected from obvious, dark-colored soil stains. The third sample (S-4) <br /> was collected in a location where the soil impact was not visually discemable. <br /> 7USEPA,2004,Preliminary Remedial Goals,Residential Soil. <br /> • 5 '-404 <br />