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A-2 <br /> 1 4 Soil Classification <br /> As the samples were obtained in the field, they were �,Iassitied by the field geologist in accordance with <br /> the Unified Soil Classification System Representative portions of the samples were then retained for <br /> ' further examination and for verification of the field classification Logs of the borings indicating the <br /> depth and identification of the various strata, the N value, and pertinent intormation regarding the method <br /> of maintaining and advancing the borehole were made <br /> 1.5 Soil Sample Screenin /hNu Portable Photoionization Detector Method <br /> After the soil sample ziplock bags were brought to ambient temperature, the headspace vapors of the soil <br /> sample in the bag were screened with a PID equipped with a 10 2 eV lamp The sample corner of the <br /> bag was opened and the detector probe immediately placed within the headspace However, due to an <br /> equipment malfunction, accurate readings were not collected. <br /> 1 6 Soil Disposal <br /> A soil sample was collected from the soil cuttings generated from the drilling and analyzed for BTEX <br /> and TTH as diesel Upon receiving analytical results, the soil will be disposed at an appropriate facility <br /> Soil is stockpiled in an area furthest away from any site activity and covered with plastic <br /> 1.7 Ground Nater and Free-floating Product Depth Determination <br /> A waterlpetroleum product interface probe was used to determine the free product thickness, if present, <br /> and a water level indicator was used to measure the ground water depth in monitoring wells that do not <br /> contain tree product Depth to ground water was measured trom the top of each monitoring well casing <br /> The tip of the water level indicator was subjectively analyzed for product sheen. All measurements and <br /> physical observations were then recorded ui the field on separate data sheets presented in Enclosure D <br /> 1.8 Sub ective Analysis of Ground Water <br /> Prior to purging, a water sample was collected from the monitoring well for subjective analysis The <br /> sample was retrieved by gently lowering a clean, disposable bailer to approximately one-half the bailer <br /> length past the air/liquid interface The bailer was then retrieved, and the sample contained within the <br /> bailer was examined for floating product and the appearance of a petroleum product sheen <br /> i <br /> LRP407 SJS <br />