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' Bank of Stockton Page 4 BofS (Cuter) Preliminary Soil and Groundwater Investigation Project No 102 2 April 8, 1997 ' 2.0 FIELD SAMPLING AND DATA COLLECTION 2.1 Soil Boring Installation ' The 9 soil borings were drilled at locations shown in Figures 2, 3, 4, and 5 The borings were designated as B-6 through B-14 All borings were drilled to a total depth of 40 feet except ' borings B-9 and B-14 which were drilled to a total depth of 35 feet Soil samples were collected at 5 foot intervals and each boring was terminated at the point where the first water ' saturated soil sample was recovered Soil cuttings were containerized in DOT approved 55 gallon drums, labeled, and stored on ' site pending profiling and proper disposition After the borings were completed, the they were closed by filling neat cement The surface concrete paving material was then patched ' 2.2 Waste Disposal A total of 24 drums were filled with soil cuttings The drums were labeled and stored on site ' pending profiling and proper disposal Manley & Sons was contacted to pick-up and dispose of the soil at Forward Inc , a Class II landfill located in Stockton On April 7, 1997, the soil was properly disposed of as non-hazardous waste Documents relating to the soil disposal are herein attached as Appendix C 2.3 Soil Sample Collection Procedures Soil samples were collected for geological and analytical evaluation at five foot intervals p g g using a 2 0 inch diameter (i d ) California split spoon sampler with the sample contained in 2 ' by 6 inch stainless steel liners The sampler was driven up to 18 inches into the native soil using the 140 pound hammer mounted on the dnll ng The blow count was recorded for each ' sample collected All soil samples were sealed with aluminum foil, capped, labeled and placed in a cooler at 4' Celsius for transport to the laboratory following Chain of Custody protocol ' Not all soil samples collected were submitted for laboratory analysis Accordingly, a field screening procedure was used to select those samples which were tested Field observation ' methods (i a sediment type, color, texture, moisture and visible evidence of contamination such as staining and odor) were used to help identify potentially contaminated soil In all borings, at least two soil samples were selected for laboratory analysis ' Boring logs of soils encountered in each boring were kept by a registered geologist Recorded in these logs were notes on sampling intervals, boring locations and sediments intersected by the boring Guidelines described in the Unified Soil Classification System form the basis for soils classification while observations outside the system such as odor and ' 2937 Veneman Ave,#B240 Geo-Phase Environmental Inc Phone (209) 569-0293 Modesto, CA 95356 Fax (209) 569-0293