ARCHIVED REPORTS_SOIL AND GROUNDWATER INVESTIGATION REPORT 2006

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Geomatrix ITABLE A-2 SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR METALS NOVEMBER 2003 ' TAOC Tracy Gravel Pits Tracy, California Concentrations in milligrams per kilogram (mg/kg) Sample Sample Sample Depth Total Molyb- Name Date (ft bgs)Z Antimony Arsenic Barium Baryllium Cadmium Chromium Cobalt Copper Lead denum Nickel Selenium Silver Thallium Vanadium Zinc Mercury GMX- I 11 / 18/03 1 <2 ' 2.9 ° 130 <0. 5 <0.5 14 6.6 21 5 < 1 18 <2 < 1 - < 1 24 30 <0.05 GMX4 11 / 18/03 5 <2 2.7 88 <0.5 <0. 5 12 4 .9 19 12 < 1 21 <2 < 1 < 1 24 24 0.078 GMX-2 11 / 18/03 1 <2 3 140 <0. 5 <0. 5 14 G.4 21 5 .6 < 1 18 <2 GMX-2 11 /18/03 5 <2 2.6 120 <0. 5 <0. 5 19 6.7 24 4.8 < 1 24 <2 < 1 < 1 22 33 <0.05 GMX-3 11 / 18/03 1 <2 3.4 130 <0. 5 <0.5 24 8.3 :1 28 6.3 < 1 30 <2 � �< F < 1 25 40 <0.05 GMX-3 11 / 18/03 5 <2 3.9 160 <0.5 <0. 5 28 10 31 6 . 8 < 1 35 <2 < 1 < 1 27 44 <0.05 GMX4 11/ 18/03 1 <2 3.4 140 <0. 5 <0. 5 20 6.6 26 17 < 1 31 <2 < 1 < 1 27 37 0.054 f GMX4 11 / 18/03 4.5 <2 3.8 82 <0. 5 <0. 5 7.9 5.8 24 53 < 1 48 <2 < 1 < 1 26 40 0. 16 I GMX-5 11 / 18/03 1 <2 3.7 150 <0.5 <0.5 27 9.3 30 7.7 < 1 34 <2 < 1 < 1 26 45 <0. 05 GMX-5 11 / 18/03 5 <2 2.4 120 <0.5 <0.5 18 6.7 21300 24 < 1 27 <2 < 1 < 1 24 58 0.07 GMX-5 1 11 / 18/03 8 . 5 <2 1 .8 28 <0.5 <0.5 5.2 5 15 78 < 1 33 <2 < 1 < 1 15 33 <0. 05 I GMX-6 11 / 17/03 I <2 3.8 130 <0. 5 <0. 5 23 8.7 22 7.4 < 1 31 <2 < 1 I < 1 28 42 0.091 GMX-6 11 / 17/03 5 <2 9.5 91 <0 . 5 <0. 5 17 5.3 93 82 < 1 42 2 < 1 < 1 33 110 0.098 GMX4 11 / 18/03 1 <2 3. 1 130 <0 . 5 <0.5 25 8.2 27 5.9 < 1 29 <2 < 1 < 1 23 40 <0.05 GMX4 11 / 18/03 5 <2 5.7 210 <0.5 1 . 1 25 7.7 49 160 < 1 33 <2 < 1 < 1 25 390 <0. 05 GMX-8 11 / 18/03 1 <2 2 74 <0.5 <0. 5 14 4.6 20 4.8 < 1 18 <2 < 1 < 1 17 24 <0. 05 GMX-8 11 / 18/03 5 <2 2.2 94 <0. 5 <0. 5 17 5.1 22 4.8 < 1 20 <2 < 1 < 1 19 31 <0. 05 GMX-9 11 / 17/03 1 <2 5.4 200 0.57 <0. 5 34 12 39 14 GMX-9 11 / 17/03 5 <2 2.3 47 <0.5 <0.5 15 5 1 11 3.4 < 1 18 <2 < 1 GMX- 10 11 / 17/03 1 <2 3 180 <0.5 <0. 5 22 8.2 20 6.4 < 1 29 <2 < 1 < 1 24 37 <0.05 GMX- 10 11 / 17/03 5 <2 3.4 93 <0. 5 <0. 5 19 7.9 17 1 5.7 < 1 27 <2 GMX- 11 11 / 17/03 1 <2 5.9 170 <0. 5 <0. 5 29 10 28 9.5 < 1 35 <2 < 1 < 1 31 49 <0.05 f GMX- 11 1 11 / 17/03 5 <2 4 110 <0. 5 <0 . 5 24 7.8 24 7.8 < 1 30 <2 1 GMX - 12 11 / 17/03 1 <2 4.2 86 <0. 5 <0 . 5 22 8. 1 21 7.2 < 1 30 <2 GMX - 12 11 / 17/03 5 <20 < 10 19200 <5 <5 27 12 26 < 10 < 10 35 <20 < 10 < 10 31 50 <0.05 GMX- 13 11 / 17/03 1 <2 5.3 180 <0.5 <0.5 29 11 30 9.6 < 1 39 <2 GMX- 13 11 / 17/03 5 <2 1 .6 150 <0.5 <0.5 18 4.5 1 15 3.5 < 1 19 <2 GMX- 14 11 / 17/03 1 <2 4.2 170 <0. 5 <0. 5 30 11 29 8 < 1 39 <2 < 1 < 1 28 47 <0.05 GMX- 14 11 / 17/03 5 <2 3 .9 160 <0.5 <0. 5 30 11 31 8.2 < 1 39 2.8 < 1 < 1 27 50 <0.05 GMX- 15 11 / 17/03 1 <2 5 230 0.58 <0. 5 29 11 30 9.3 < 1 37 <2 GMX- 15 11 / 17/03 5 <2 1 . 8 78 <0.5 <0. 5 17 6 13 3.9 < 1 22 <2 < 1 < 1 22 29 <0.05 GMX - 16 11 / 17/03 I <2 3 .2 120 <0. 5 <0.5 23 8.4 20 6.3 < 1 31 <2 GMX- 16 11 / 17/03 5 <2 1 .9 52 <0. 5 <0.5 15 4.6 10 3.6 < l 20 <2 GMX - 17 11 / 17/03 1 <2 5.7 160 <0. 5 <0. 5 26 9.9 28 9.4 < l 38 <2 < 1 < 1 29 45 <0.05 GMX - 17 1 11 / 17/03 5 <2 3.8 130 <0.5 <0.5 26 10 27 7 < 1 39 <2 GMX- 18 11 / 17/03 l <2 10 220 0.56 <0. 5 31 14 36 14 < 1 46 2.3 GMX- 18 11 / 17/03 - 5 <2 1.2 47 <0. 5 <0.5 11 3.8 8.3 2.3 < 1 18 <2 GMX- 19 11 / 17/03 1 <2 4. 1 170 <0. 5 <0.5 28 10 26 8 < 1 38 <2 GMX- 19 11 / 17/03 5 <2 4.3 170 F<0. 5 <0. 5 30 12 1 29 8.1 < 1 42 2 GMX-20 11 / 18/03 1 <2 3.3 150 0.63 <0. 5 28 9.2 30 6A < 1 33 <2 I GMX-20 1 11 / 18/03 5 <2 4.7 150 0. 79 <0. 5 30 11 35 8 < 1 40 <2 < 1 1 . 1 33 48 <0. 05 Id GMX-21 11 / 18/03 1 <2 3.6 150 <0 . 5 <0. 5 25 8.9 29 6.8 < 1 32 <2 GMX-21 11 / 18/03 5 <2 3.3 150 <0. 5 <0.5 26 8.7 28 6.4 < 1 32 <2 < 1 GMX-23 11 / 18/03 I __ <2 3. 1 110 _ <0. 5 <0. 5 26 8 27 5.6 lGMX -23 11 / 18/03 5 <2 2. 8 120 <0. 5 <0. 5 22 7.2 25 5.3 G l MX -OWNS 11 / 18/03 <2 1 .4 1 65 1 <0.5 1 <0. 5 9. 1 4 < 1 11 1 Notes : 1 . Soil samples collected by Geomatrix Consultants, Inc. , and analyzed by Severn Trent Laboratories (STL San Francisco) , Inc. , 3 . < = Analyte was not detected at or above detection limit indicated. of Pleasanton , California for Metals using EPA Method 601013 . 4. Bolded values indicate that analytical results were detected above the laboratory reporting limit. 2 . ft bgs = feet below ground surface I1.\Doc_Scde\7000s\7066.001 \Reports\2005 Soil Investigation and well Survey\4 Appendixes\Appendix AWppndx A Suln 7bls Page I of t