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30 April 2005 <br /> • AGE-NC Project No 95-0141 <br /> Page 5of10 <br /> Springs,California The waste was disposed of at the Western Environmental Inc facilityin Mecca, <br /> California Copies of the waste disposal manifests are included in Appendix E <br /> 3.0. FINDINGS <br /> Soil stratigraphy, ground water elevation, flow direction, and gradient were determined from field <br /> data The contaminant impact to soil and ground water was quantified from laboratory analytical <br /> data <br /> 31 STRATIGRAPHY <br /> Generally, brown to orange brown, damp to moist clay, silty clay and clayey silt were encountered <br /> from approximately 5 to 25 feet bsg Orange brown to grey, moist to saturated silty sand was <br /> encountered from 25 to 40 feet bsg From 40 to 45 feet bsg a blue-grey sandy, silty clay was <br /> observed A sandy silt was identified at 45 to 50 feet bsg Blue-gray,saturated silty sand to sandy silt <br /> . was encountered from 55 to 70 feet bsg Gray, saturated, moderately graded coarse sand was <br /> encountered from 75 to 110 feet bsg From 110 to 115 feet bsg a grey-green clayey silt was <br /> identified Finally,at 115 to 120 feet bsg a grey saturated silty sand was encountered(Appendix B) <br /> Site stratigraphy is presented in cross sectional view on Figures 3 and 4 <br /> 32 ANALYTICAL RESULTS OF SOIL SAMPLES <br /> A total of 10 soil samples were analyzed for the constituents listed in section 2 2 2 <br /> No analytes were detected at or above laboratory detection limits in the samples analyzed Analytical <br /> results of soil samples are summarized in Tables 4 and 5 The laboratory reports (CTEL Project <br /> Number CT214-0412129), quality assurance and quality control (QA/QC) report, and chain-of- <br /> custody forms are included in Appendix F Documents confirming the upload of laboratory <br /> electronic deliverable format (EDF) files and depth to water measurements to GeoTracker are <br /> included in Appendix G <br /> 3 3 GROUND WATER ELEVATION AND GRADIENT <br /> At the time of the December 2004 monitoring event,depths to ground water ranged from 2169 feet <br /> to 23 02 feet below the tops of the well casings (btoc) Ground water elevations at the site ranged <br /> from 11 93 feet below mean sea level (MSL) in well MW-12A to 12 98 feet below MSL in well <br /> Advanced GeoEnvlronmentsl,Inc <br /> I <br />