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I. in this assessment. All of the detected metals concentrations (including arsenic) were below the <br />average values for the listed metals found in soil for California. The background concentrations <br />were referenced from Bradford et. all, "Background Concentrations of Trace and Major Elements <br />in California Soils", Kearney Foundation Special Report, UC Riverside and Cal-EPA DTSC, <br />March 1996. Please refer to Table 2 for a complete listing of the metals included for analyses and <br />the respective results. <br />The analyses of the soil samples analyzed for the fertilizer constituents ammonia as N, nitrate as <br />N, TKN, nitrate+nitrite, total nitrogen, phosphate, and sulfate showed the following results. <br />Select Soil Results (Shallow Soil Borings) <br />Aualvte Concentrations (mg/kg) <br />Sample <br />Location and <br />Depth <br />Ammonia <br />as N <br />Nitrate-as <br />NO 3 <br />Nitrate + nitrite TKN Phosphate Total <br />Nitrogen Sulfate <br />PRG (mg/kg) NA NA NA NA NA NA NA <br />B-1-1' 49 80 18 500 500 183 80 <br />B-2-1' 38 31 7 300 300 78 10 <br />B-3-1' 2.4 7 . 2 300 300 71 ND<10 <br />B-4-1' 1.6 ND<100 ND<1 100 100 49 ND<10 <br />B-5-1' 1.6 8 2 200 200 130 20 <br />B-6-1' 1.6 ND<100 ND<1 ND<100 ND<100 22 ND<10 <br />B-7-3' 3.5 226 51 3600 3700 28 30 <br />B-8-3' 2.4 466 105 500 600 109 30 <br />ND = Not detected at or above the laboratory reporting limit. <br />NA = PRG not applicable to analyte. <br />6.1.2 MONITORING WELL SOILS RESULTS <br />The following table outlines the detected concentrations of select constituents noted from the soil <br />samples submitted for laboratory analyses from the monitoring well borings. The following <br />detections were made during the analysis for pesticides. <br />Select Soil Results (Monitoring Well Soil Borings) <br />Sample <br />Location and <br />Depth _ <br />Analyte Concentration mg/kg) <br />4,4-DDD 4,4-DDE 4,4-DDT Dieldrin Endosulfan I <br />PRG (mg/kg) 2.4 1.7 1.7 0.03 370 <br />MW-1-1' ND<0.005 0.033 0.052 ND<0.005 ND<0.005 <br />MW-2-1' ND<0.005 0.026 0.035 ND<0.005 ND<0.005 <br />MW-2-5' ND<0.005 0.029 0.13 0.011 0.006 <br />MW-2-10' ND<0.005 ND<0.005 0.01 ND<0.005 ND<0.005 <br />MW-3-1' ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 <br />MW-3-5' ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 <br />ND = Analyte not detected at or above the laboratory reporting limit. <br /> <br />27125.E01 STO4Rl 81 <br />Page 15 of 23 <br /> <br />2004 Kleinfelder, Inc. February 13, 2004 <br />KLEINFELDER 2825 East Myrtle Street, Stockton, CA 95205-4794 (209) 948-1345 (209) 948-0621 fax