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<br />Table 1. List of constituents and results of chemical analyses-Continued <br />Sampling site Sample depth Total Total Total Total Total Total Total <br />strontium arsenic antimony selenium mercury thallium uranium <br />(fig. 2) (cm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) <br />PSDGI 0-5cm 140 4.9 0.8 0.3 0.05 <50 <50 <br />PSDGI 5-lOcm 140 5.2 0.8 0.3 0.04 <50 <50 <br />PSDGI 10-15 120 5.5 0.9 0.2 0.03 <50 <50 <br />PSDGI 15-20 200 6.7 0.7 0.2 0.02 <50 <50 <br />PSDGI 20-25 240 8.1 0.7 0.3 0.03 <50 <50 <br />PSDG2 0-5 120 4.6 0.7 0.2 0.01 <50 <50 <br />PSDG2 5-8 130 5.2 0.8 0.2 0.01 <50 <50 <br />PSDG2 8-11 130 5.0 0.8 0.3 0.02 <50 <50 <br />PSDG3 0-4 130 4.6 0.8 0.3 0.03 <50 <50 <br />PSDG3 4-6 ISO 5.4 0.8 0.3 0.01 <50 <50 <br />PSDG3 6-10 130 4.9 0.9 0.3 0.02 <50 <50 <br />PSDG4 0-2.5 140 4.8 0.8 0.3 0.01 <50 <50 <br />PSDG4 2.5-4 ISO 5.6 0.9 0.3 0.04 <50 <50 <br />PSDG4 4-6 120 5.6 1.0 0.3 0.02 <50 <50 <br />PSDG4a 0-5 140 4.8 0.8 0.2 0.02 <50 <50 <br />PSDG4a 5-10 140 5.3 0.9 0.2 0.02 <50 <50 <br />PSDG4a 10-15 140 5.6 0.9 0.2 0.03 <50 <50 <br />PSDG4a 15-19 110 5.3 0.9 0.2 0.02 <50 <50 <br /> DUPLICATE SAMPLES <br />DUP PSDG I 10-15 120 5.6 0.9 0.2 0.02 <50 <50 <br />DUP PSDG3 6-10 120 5.1 0.8 0.3 0.02 <50 <50 <br /> REFERENCE MATERIALS <br /> Cody Shale <br />USGS SCO-l reported value 170i:20 12.4:t1.4 2.5:tO.1 0.9:tO.1 0.05 3 <br />USGS laboratory USGS SCO-I 160 12 2.5 0.9 0.07 <50 <50 <br /> Shale <br />USGS SDO-I reported value 75:t11 69:t9 4.1-4.8 1.9-6.8 0.19:tO.08 8 49:t7 <br />USGS laboratory USGS SDO-I 71 78.0 4.1 1.6 0.16 <50 <50 <br /> Marine sediment <br />USGS MAG-l reported value 146:t15 9.2:t1.2 1.0:t0.1 1.2:tO.1 (0.02) <50 <50 <br />USGS laboratory USGS MAG-I 130 9.0 0.9 1.2 0.05 <50 <50 <br /> Agricultural soil <br />NlST 2709 reported value 230:t2.0 18:t1 7.9:tO.6 1.6:t0.1 1.40:t0.08 (I) (3) <br />USGS laboratory NIST 2709 210 18 6.2 1.5 1.4 <50 <50 <br />