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TABLE 1 ANALYTICAL RESULTS FOR METALS SOIL AND OIL SAMPLES HISTORICAL PIPELINES Chevron Environmental Management Company Concentrations reported in mg/kg Chromium Molyb- Sam le Name Site Name Date TPHc Antimony Arsenic Barium Beryllium Cadmium (Total) Cobalt Copper Lead Mercury denum Nickel Selenium Silver Thallium Vanadium Zinc SS-2A-2D-050404 Stanley Works-Willow Heights P 2004 130 NA NA NA NA 10.0554 28.9 NA NA 5.55 NA NA 27 NA NA NA NA 55.9 DS-IA-D-S-040330 TAOC Byron Hot Springs Pum St 2004 <4 NA NA NA NA <0.0529 36.3 NA NA 6.86 NA NA 30.9 NA NA NA NA 55.2 DS-1-S-040227 TAOC Linora Pump Station 2004 62 NA NA NA NA 0.217 40 NA NA 8.07 NA NA 42.9 NA NA NA NA 58.9 DS-1-(A-D)-040304 TAOC Trent Pump Station 2004 27,000 NA NA NA NA 0.663 87.9 NA NA 15.7 NA NA 100 NA NA NA NA 88.7 HA-14-S-1-040304 TAOC Trent Pump Station 2004 130 1.12 8.93 160 0.528 0.678 94.4 14.7 33.4 13.6 0.136 0.469 1 99.5 0.616 <0.15 <0.93 1 52.1 68.1 HA-14-S-5-040304 TAOC Trent Pump Station 2004 38 0.934 10.1 183 0.639 0.766 116 17.8 37.8 9.02 0.146 0.747 121 0.533 <0.15 <0.93 60.4 63.4 HA-15-S-1-040304 TAOC Trent Pump Station 2004 98 0.781 9.57 176 0.595 0.68 90.1 17.2 43.1 21.8 0.235 0.425 127 0.575 <0.147 <0.912 50.4 118 HA-15-S-5-040304 TAOC Trent Pump Station 2004 56 0.875 9.09 162 0.571 0.627 107 16.1 44.7 9.83 0.11 0.603 108 <0.461 <0.147 <0.912 55.4 65.7 HA-16-S-1-040304 TAOC Trent Pump Station 2004 1,700 0.85 6.4 159 0.208 0.33 47.6 3.71 195 19.4 0.214 0.439 29.1 0.685 <0.147 <0.912 23.7 118 HA-16-S-5-040304 TAOC Trent Pump Station 2004 1,100 <0.647 4.84 223 0.271 0.238 37.7 5.59 504 10.7 0.115 <0.176 41.2 0.759 <0.147 <0.912 18.3 331 HA-17-S-1-040304 TAOC Trent Pump Station 2004 65 0.737 8.15 153 0.54 0.718 83.6 9.49 88.2 42.1 0.106 0.48 76.2 0.526 <0.15 <0.93 46.5 123 HA-17-S-5-040304 TAOC Trent Pump Station 2004 130 0.765 13.5 150 0.351 0.889 137 6.98 84 7.22 0.0882 0.725 53.3 0.524 <0.147 <0.912 62.1 70.7 HA-18-S-1-040304 TAOC Trent Pump Station 2004 3,600 0.675 6.81 186 0.216 0.54 72 4.91 134 14.3 0.124 0.424 38.5 0.499 <0.147 <0.912 37.1 703 HA-18-S-5-040304 TAOC Trent Pump Station 2004 2,800 <0.641 7.33 135 0.336 0.524 70.1 9.9 111 89.3 0.158 0.352 75.1 0.561 <0.146 <0.903 46.2 565 HA-1-S-1-040304 TAOC Trent Pump Station 2004 7,600 <0.647 8.38 151 0.452 0.612 81.5 12.7 39 46.6 0.156 0.762 135 0.705 <0.147 <0.912 74.1 86.4 HA-1-S-5-040304 TAOC Trent Pump Station 2004 1,400 0.905 11.7 201 0.449 0.806 91.9 15.9 67.7 334 0.148 0.408 114 0.537 <0.15 <0.93 82.4 132 HA-2-S-1-040304 TAOC Trent Pump Station 2004 3,000 1.03 10.3 248 0.465 0.797 85 14.6 50.2 321 1.48 0.85 131 0.61 <0.149 <0.921 81 196 HA-2-S-5-040304 TAOC Trent Pump Station 2004 24,000 <0.653 14 206 0.274 1.26 64.5 18.5 155 581 0.599 <0.178 96.7 1.16 0.714 1 <0.921 82.3 349 HA-3-S-1-040304 TAOC Trent Pump Station 2004 2,700 1.13 11.6 211 0.435 0.996 69 15.5 51.4 224 0.134 0.763 158 0.825 <0.147 <0.912 86.6 170 HA-3-S-5-040304 TAOC Trent Pump Station 2004 6,400 0.989 14.7 169 0.364 0.741 72.6 10.8 83.9 736 0.153 0.179 88.9 0.536 <0.149 <0.921 76.4 134 HA-4-S-1-040304 TAOC Trent Pump Station 2004 34,000 1.11 8.76 154 0.529 0.745 89.4 17.5 39.2 50.6 0.196 0.675 150 0.683 <0.147 <0.912 85.6 92.6 HA-4-S-5-040304 TAOC Trent Pump Station 2004 <12 0.758 9.73 164 0.431 0.694 82.7 13.6 47.7 306 0.146 0.416 104 <0.461 <0.147 <0.912 63.6 85.9 DS-1-A-D-040212 Tracy Pump Station 2004 <4 NA NA NA NA 0.0931 41.1 NA NA 7.01 NA NA 38.2 NA NA NA NA 56.4 WASTE-S-050419 TAOC 840 H Street-Los Banos 2005 2,100 NA NA NA NA 0.265 111 NA NA 8.29 NA NA 118 NA NA NA NA 59.2 SP-113-S-050719 Willow Brook Subdivision 2005 400 NA NA NA NA <0.0827 22.9 NA NA 5.59 NA NA 22.6 NA NA NA NA 48.6 SP-1-C-F-S-050719 Willow Brook Subdivision 2005 2,500 NA NA NA NA <0.0843 25 NA NA 6.49 NA NA 23.2 NA NA NA NA 47.2 PP8-060309 850 San Pablo Ave-Pinole 2006 300 NA NA NA NA 0.919 31.6 NA NA 45.7 NA NA 25.3 NA NA NA NA 92.9 Area 7 Mountain View Townhomes,Tracy,CA 1995 260 <2.5 1.6 82 <0.25 <0.5 <20 5.7 13 5.9 <0.1 <0.1 22 <0.25 <1 <0.5 21 40 BP-14 Gonzales Property,Newman,CA 1996 <1 <5 13 44 <0.5 <5 60 11 18 8 <0.04 1 96 <0.5 <2 <10 32 49 GP-1 Gonzales Property,Newman,CA 1996 15,000 <5 <0.5 200 <0.5 <5 61 13 23 9.5 <0.04 2 81 <0.5 <2 <10 35 59 DS-1/2/3 COMP Hickson Kerley,Antioch,CA 2001 360 <0.431 4.71 214 0.903 0.777 29 16.4 37.8 35.9 <0.4 <2.16 29.9 0.518 <0.431 <0.431 35.4 168 Com '1,2,3 Minnesota Avenue,Brentwood,CA 2001 NA <0.379 6.4 176 0.626 0.538 32.9 10.8 25.5 9.93 <0.2 <1.89 31.2 0.712 <0.379 <0.379 49.3 70.5 Com '-1/2/3-0302 Los Medanos Pump Station,Antioch,CA 2002 3,800 <0.5 3.36 188 0.702 <0.5 27.4 10 22.9 9.11 <0.6 <2.5 26.6 <0.5 <0.5 <0.5 32.2 47.6 Com '-1/2/3-0502 Roberts Property,Vernalis,CA 2002 6,900 <2.17 7.03 298 <0.725 <0.725 50.5 13.7 35.2 9.51 <0.9 <3.62 61.3 <0.725 0.878 <0.725 38.2 65.9 Com '-1/2/3 US Can/Welty Road,Vernalis,CA 2002 5,600 <1.5 4.96 266 <0.5 1.06 50.4 11.4 29.6 10.8 <0.8 <2.5 50.7 <0.5 <0.5 <0.5 34.2 53.8 HA-4-S-1-040304 TAOC Trent Pump Station 2004 34,000 1.11 8.76 154 0.529 0.745 89.4 17.5 39.2 50.6 0.196 0.675 150 0.683 0.147 0.912 85.6 92.6 Comp' 1,2,3 Minnesota Avenue,Brentwood,CA 2001 NA <0.379 6.4 176 0.626 0.538 32.9 10.8 25.2 9.93 <0.2 <1.89 31.2 0.712 <0.379 <0.379 49.3 70.5 Comp'-1/Comp-2 Gonzales,Newman,CA 2001 NA <0.331 7.66 164 0.495 <0.331 67.9 12.4 28.3 11.1 <0.2 <1.66 84.6 <0.331 <0.331 <0.331 41 61.8 MW-10/14 Comp Corral Hollow,Tracy,CA 2001 NA <0.5 3.46 191 <0.5 <0.5 23.7 5.94 15.2 9.42 <0.2 <2.50 22.7 0.549 <0.5 <0.5 23 39.4 Comp'-1/2/3 Minnesota Avenue,Brentwood,CA 2002 NA <0.5 11.5 136 0.811 <0.41 48.9 14 40 10.2 <0.2 <2.05 61.9 0.647 <0.41 <0.41 62.5 87 AVERAGE METALS CONCENTRATION IN SOIe -- 0.74 7.53 165.47 0.48 0.32 55.16 11.52 53.41 45.84 0.21 0.90 62.29 0.68 0.27 0.94 47.17 91.20 MAXIMUM METALS CONCENTRATION IN SOIL 0.9 14.7 298 0.903 1.26 137 18.5 504 736 1.48 3.62 158 2 1 1.69 86.6 703 METAL/TPH CORRELATION COEFFICIENT 0.17 0.09 0.19 -0.01 0.45 0.22 0.35 0.06 0.29 0.21 0.16 0.39 0.39 0.24 -0.2 0.11 0.42 rmm Science to 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