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Report—Fist Phase Remedial System Page 10 <br /> Former Manna Pro Site <br />' Project No 207 3 <br /> June 18,2002 <br />' 4.0 SOIL & AIR SAMPLING & ANALYSIS <br />' 4.1 Soil Sample Collection <br /> While drilling the soil boring, soil samples were collected for geologic and possible <br />' analytical evaluation on five-foot intervals unless otherwise noted The following is a <br /> description of the methods used in collecting soil samples <br />' Soil samples were collected for geological and analytical evaluation using a 2 0-mch <br /> diameter by 15-foot long (i d ) hammer driven California Split Spoon sampling device <br /> fitted with three 2 by 6 inch stainless steel liners The soil sample collection procedure <br />' was as follows The end of each sample tube removed from the split spoon was sealed <br /> with aluminum foil, capped with plastic end caps, secured with tape, labeled and placed <br /> in a cooler at 4° Celsius for transport to the laboratory using Chain of Custody protocol <br />' Chain of Custody (CofQ forms are documents used to track the handling of samples All <br /> dates, times, persons and companies handling the samples were listed from the time the <br /> sample was collected to its ultimate disposal All soil sampling equipment was <br />' decontaminated between uses by washing using a steam cleaner Nitrile gloves were <br /> worn during sample collection and changed between the collection of each sample <br /> lie A detailed log was made of the boring and is attached as Appendix B The information <br /> noted included such data as sample depths, blow counts from hammer driven sampling <br /> devices, horizons of detectable contamination (detected by field methods), soil <br /> classification utilizing the Unified Soil Classification System and sediment description <br /> (color, texture, composition, hardness, moisture content, and post-depositional changes <br />' that have occurred in the sediments) <br /> In general, the geologic character of the soil observed during drilling may be summarized <br /> Ias follows <br /> 0 to 15+feet <br />' Clay and Silt, reddish brown, semi-plastic to friable <br /> 15+feet to 30+ feet <br /> Sand, fine to very course grained Generally fair sorting Greenish gray to yellowish red <br /> Porous and permeable Generally contains few fines, but silty in some intervals <br /> 30+ feet to 35+ feet <br /> Silty or sandy clay, greenish gray, plastic to semi-plastic deformation <br /> I2937 Venetnan Ave , ##B240 Geo-Phase Environmental Inc Phone(209)569-0293 <br /> Modesto, CA 95356 Fax(209)569-0295 <br />