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• TABLE 1 - SUMMARY OF SOIL SAMPLE ANALYSIS <br /> THE LEARNER COMPANY, 2711 NAVY DRIVE, STOCKTON, CALIFORNIA <br /> WGR - MAY 2008 <br /> All concentrations presented in mg/Kg = parts per million (ppm) <br /> SAMPLE I.D. 13-14-5 B-15-1 B-15-5 B-16-1 B-16-5 B-17-1 B-17-5 B-18-1 B-18-5 PRG'/TTLC2 <br /> SAMPLE DEPTH 5' 1' 5' 1' 5' 1' 5' 1' 5' <br /> SAMPLING DATE 5/8108 518/08 5114108 5114/08 5114/08 5/14/08 5/14108 5/14/08 5/14108 <br /> Total PCBs ND<0.025 ND<1,2 ND<0.025 0.069 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 0.74150 <br /> Petroleum Oil&Grease NA 1,300 NA 380 NA 640 NA ND<50 NA 2,500/5,000' <br /> PH-gasoline N0<10 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 180' <br /> PH-diesel ND<1.0 73 ND<1.0 2.4 ND<1.0 14 ND<1.0 ND<1.0 ND<1.0 180' <br /> PH-motor oil ND<5.0 900 ND<5.0 18 ND<5.0 97 ND<5.0 ND<5.0 ND<5.0 2,500/5,000` <br /> Antimony ND<0.5 1.3 ND<0.5 5.9 ND<0.5 1.3 0.64 0.60 ND4.5 410/500 <br /> Arsenic 32 6.9 3.9 5.3 6.3 4.7 16 10 16 1.6/500 <br /> Barium 320 140 170 180 470 110 220 280 220 67,000/10,000 <br /> Beryllium 0.53 ND<0.5 ND<0.5 ND<0.5 0.67 ND<0.5 0.53 0.85 0.65 1,900/75 <br /> admium ND<0.25 0.76 ND<0.25 3.7 ND<0.25 0.64 0.26 ND<0.25 ND<0.25 450/100 <br /> hromium 47 31 41 400 51 33 46 74 56 450/2,500 <br /> • obalt 19 8.3 14 14 20 8.1 16 17 17 1,900 18,000 <br /> opper 31 59 25 480 36 71 43 55 35 41,000/2,500 <br /> Lead 8.1 63 6.7 280 9.9 190 21 17 8.2 75011,000 <br /> Mercury ND<0.05 0.24 ND<0.05 0.24 ND<0.05 0.12 ND<0.05 0.21 ND<0.05 310/20 <br /> Molybdenum 12 1.4 0.85 11 0.64 1.2 0.74 2.1 ND<0.5 5,100/3,500 <br /> Nickel 38 33 30 290 42 36 38 62 40 20,000 12,000 <br /> Selenium ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 0.61 ND<0.5 5,100/100 <br /> Silver ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 5,100/500 <br /> Thallium ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 67/700 <br /> Vanadium 120 42 69 49 95 43 100 t00 100 7,200/2,400 <br /> inc 71 560 55 81 990 250 91 80 100,00015,000 <br /> Acetone ND<0.05 ND<0.05 ND<0.05 ND<0.05 ND<0.05 0.17 ND<0.05 ND<0.05 ND<0.05 6,000/- <br /> -Butanone(MEK) ND<0.02 ND<0.02 ND<0.02 ND<0.02 ND<0.02 0.022 ND<0.02 ND<0.02 ND<0.02 27,000/- <br /> Styrene ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 1,700/- <br /> Naphthalene ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 0.0052 ND<0.005 ND<0.005 ND<0.005 - <br /> is(2-ethylhexyl)Phthalate ND<0.33 ND<6.6 ND<0.33 ND<0.33 ND<0.33 ND<0.33 ND<0.33 ND<0.33 ND<0.33 1201- <br /> utylbenzylPhthalate ND<0.33 ND<6.6 ND<0.33 ND<0.33 ND<0.33 ND'31 ND<0.33 ND<0.33 ND<6.33 100,0001- <br /> PRG:Preliminary Remedial Goal for industrial soil(US EPA Region 9,2004) <br /> 2 TTLC:Total Threshold Limit Concentration(CA Code of Regulations,Title 22 for CA regulated hazardous waste) <br /> • *San Francisco RWQCB ESLs(Environmental Screening Levels)for Industrial Land Use Only(<3'/>3'bgs)Tables B,D and F1-13Detectable concentrations are highlighted in yellow. Concentrations exceeding PRG,TTLC and/or ESL limits are shown in bold. <br /> Concentrations exceeding TTLCs are highlighted in orange. ND: Not Detected at reporting limit listed NA: Not Analyzed <br /> All samples were ND for Volatile Organic Compounds(VOCs)and Semi-Volatile Organic Compounds(SVOCs)except those listed. <br /> iv <br />