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1 <br />■ Times and dates that drilling/excavation began and ended. <br />1 Type of exploratory equipment being utilized, including manufacturer, make, and <br />model for special modifications. <br />■ Name(s) and registration numbers for geologist(s) responsible for log description. <br />1 Name(s) of other personnel assisting in the logging. <br />■ Weather conditions. <br />■ Description of soils according to the Unified Soil Classification System and <br />1 description of bedrock materials according to accepted geologic nomenclature. <br />■ Systematic descriptions of lithologic and micro -structural changes in strata or soil <br />horizons, including thickness of units as well as the depth and elevation of lithologic <br />changes. <br />■ Presence of and depth to groundwater. <br />■ Caving or sloughing conditions in the hole, including depth and elevation. <br />■ Sampling interval(s), including depths and elevations. <br />■ Unusual color, staining, or odors of chemical or waste origin. <br />■ Drilling advancement in feet -per -hour (average) and/or feet -per -minute, noting <br />periods of difficult or very easy drilling. <br />■ Any subsurface structures or unusual features encountered. <br />■ Descriptions of mineral seams and fracture fillings. <br />■ Faults, gouge, or shear zones penetrated. <br />■ Depth and thickness of weathering. <br />■ An opinion as to the characteristics and hydraulic conductivity of water -bearing <br />lithologies. <br />■ Other notes and descriptions as required. <br />Drill cuttings will be spread on the ground at each drilling site. <br />3.3.3 HydropunchT" Sampler and Initial Groundwater Sampling <br />Once groundwater is encountered, drilling will be terminated and the augers will be <br />1 withdrawn in preparation for driving the HydropunchTM sampler. The HydropunchTM sampler <br />will be affixed to decontaminated 1 -1/4 -inch diameter steel casing that will be driven up to <br />1 20 feet into the saturated zone. Once the sampler reaches the target depth, the screen will <br />be opened to allow formational water to enter the screened interval. A disposable bailer <br />will be lowered through the steel casing to extract the groundwater sample for analysis of <br />1 VOCs. Sample collection methods are described in more detail in Section3.4.6. The <br />HydropunchTM sampler and steel casing will remain in the borehole for up to two weeks to <br />allow water levels to stabilize. <br />1 If VOCs are detected in the HydropunchTM sample, the sampler and casing will be removed, <br />and the borehole will be abandoned, and a replacement "step -out" borehole and <br />HydropunchT"' will be drilled and constructed according to the procedures outlined above. <br />Borehole abandonment will be conducted by grouting with a neat cement grout. After the <br />1 8 <br />2011-0115 CHSL EMP Workplan Geo -Logic Associates <br />Revision 1- August 24, 2011 <br />