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f <br /> %= Geomatrix <br /> TABLE A-4 <br /> ISUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR <br /> PETROLEUM HYDROCARBONS AND SEMI-VOLATILE ORGANIC COMPOUNDS NOVEMBER 2003 ' <br /> TAOC Tracy Gravel Pits <br /> Tracy, California <br /> Concentrations in milligrams per kilogram (mg/kg) <br /> rD <br /> ple Penta- Benzo(b) Benzo Benzo(k) Dibenzo Indeno <br /> Sample Sampleth chloro- Acenaph- Acenaph- Anthra- Benzo(a) Benzo(a) fluoran- (g,h,i) fluoran- (a,h) Fluoran- (1,2,3 -cd) Naph- Phenan- B(a)P <br /> Name Date gs)2 phenol TPHmo TPHd thene thylene cene anthracene pyrene thene perylene thene Chrysene anthracene thene Fluorene pyrene thalene threne Pyrene TEFs 3 <br /> I GMX -20 11 / 18/03 1 NA 31300 330 <6. 7 <6. 7 <6. 7 <6.7 <6.7 <5.7 <6.7 <6.7 <6.7 <6.7 <6.7 <6 . 7 <6.7 E<6,7 <6.7 <6.7 ND <br /> GMX -20 11 / 18/03 5 NA 2,200 230 <6. 7 <6.7 <6 .7 <6.7 <6.7 <6*7 <6.7 <6.7 <6. 7 <6.7 <6.7 <6. 7 <6. 7 <6.7 <6.7 ND <br /> GMX-21 11 / 18/03 1 NA <50 < 1 <0. 067 <0.067 <0.067 <0.067 <0.067 <0. 067 <0.067 <0.067 <0. 067 <0. 067 <0.067 <0.067 <0.067 7 <0.067 <0.067 ND <br /> GMX-21 11 / 18/03 5 NA <50 < 1 <0 .067 <0. 067 <0.067 <0.067 <0.067 <0.067 <0.067 <0.067 <0. 067 <0. 067 <0.067 <0.067 <0.067 7 <0. 067 <0.067 ND <br /> GMX-23 11 / 18/03 1 NA <50 < 1 <0.067 <0.067 <0. 067 <0. 067 <0.067 <0. 067 <0.067 <0.067 <0. 067 <0.067 <0.067 <0.067 <0.067 <0. 067 <0.067 <0.067 ND <br /> LGMX-23 11 / 18/03 5 NA <50 < I <0. 067 <0.067 <0. 067 <0.067 <0. 067 <0.067 <0.067 <0.067 <0. 067 <0.067 <0.067 <0. 067 <0.067 <0.067 <0.067 <0.067 ND <br /> GMX-OWNS 11 / 18/03 -- <97 379000 6,700 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 ND <br /> GMX-OWNW 11 / 18/03 -- NA NA NA <67 <67 <67 <67 <67 <67 <67 <67 <67 <67 <67 <67 <67 <67 <67 <67 ND <br /> Notes: <br /> 1 . Soil samples collected by Geomatrix Consultants, Inc. , and analyzed by Severn Trent Laboratories (STL San Francisco), Inc. , of Pleasanton , California, <br /> I for total petroleum hydrocarbons using EPA Method M8015 and polynuclear aromatic hydrocarbons using EPA Method 8270 SIM. <br /> l 2. ft bgs = feet below ground surface <br /> 3 . B (a)P TEFs = Benz(a)pyrene Toxic Equivalency Factors are used to assess the relative toxicity of PAHs and PAH derivatives as a group. (OEHHA , 1993 ) <br /> If a PAH was not detected, one-half the detection limit was multiplied by the corresponding potency equivalency factor (PEF) . <br /> B (a)P TEFs were only calculated if one or more of the carcinogenic PAHs were detected. The PER used to calculate <br /> B (a)P TEFs were 1 .0 for benzo(a)pyrene ; 0. 1 for benzo(a)anthracene, benzo (b)fluoranthene, benzo (k)fluoranthene, and <br /> indeno( 1 ,2,3 -cd)pyrene ; 0. 01 for chrysene ; and 0. 35 for dibenz(a,h) anthracene. <br /> 4. NA = Not Analalyzed <br /> 5 . < = Analyte was not detected at or above the laboratory reporting limit indicated. <br /> 6. Bolded values indicate that analytical results were detected above the detection limit. <br /> i7 . ND = Not detected <br /> 1 <br /> f <br /> i <br /> I . <br /> I <br /> I� <br /> I1:\DOC_S:Ife\7000s\7066.001 \Reports\2005 Soil Investigation and Well Survey\4 Appendixes\Appendix AWppndx A Sum This Page 2 of 2 <br />