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t30 January 2015 <br /> AGE Project No. 14-3154 <br /> ' Page 4 of 6 <br /> cement grout from the total depth to surface grade. Borings advanced below the <br /> ' groundwater table were abandoned with grout utilizing tremie procedures. Backfilling <br /> activities were conducted under inspection by the SJCEHD. <br /> ' 3.0. FINDINGS <br /> ' Soil stratigraphy was determined from field data collected during advancement of the <br /> soil borings; hydrocarbon and metals impact to soil was quantified by laboratory <br /> ' analyses of the soil and groundwater samples. <br /> ' 3.1. STRATIGRAPHY <br /> Based on the data collected from borings AB1 through AB21: <br /> ' Generally, tan, brown to dark brown, silts and silty sands were encountered between <br /> surface grade and approximately 15 feet bsg. Fine to medium, well graded or poorly <br /> ' graded sands were encountered at depths between 15 feet and 20 feet bsg. Silt and <br /> clay was observed in the deepest soil samples collected at 25 feet bsg. Saturated soil <br /> was encountered from borings at depths of 15 feet bsg. <br /> tNo hydrocarbon-like odors were observed in samples collected from borings. Organic <br /> vapor was not detected from any soil samples collected from borings AB1 through AB21 <br /> ' using a PID, beyond background values. During boring advancement field PID readings <br /> did not detect organic vapors above 0 parts per million volume (ppmv), with the <br /> exception of the five-foot sample at boring location AB 18-5 (0.5 ppmv). <br /> ' Boring logs are included in Appendix A. <br /> t3.2. FINDINGS <br /> ' Constituents of concern were not detected at or above laboratory reporting limits in any <br /> of the analyzed soil samples collected from the borings. Laboratory analytical results <br /> are included in Appendix B. <br /> 1 A total of twenty (20) soil samples were analyzed from borings AB1 through AB7 for <br /> TPH-d/o. A total of fourteen (14) soil samples were analyzed from borings AB8 through <br /> ' AB21 for TPH-g/d/o. Target analytes for semi-volatile organic compounds quantified as <br /> fuel oil, were not detected in any of the soil samples collected during the December <br /> 2014 investigation. <br /> tFourteen soil samples were analyzed for CAM 17 metals. Analytical results for the CAM <br /> 17 analysis detected concentrations of arsenic as high as 2.4 milligrams per kilogram <br /> Advanced GeoEnvironmental Inc. <br />