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Bank of Stockton- Cutter Lumber Site Page 10 Groundwater Monitoring Well Construction Project No 102 2 . Apn!24, 1998 ' clay and silt to about 65 feet with minor sandy layers at 20 and at 40 feet Between 65 feet and total depth at 91 feet, the soil consisted of very fine- to ' medium-grained sand with few fines Near the bottom of the boring, fine sand carried by abundant groundwater forced its way into the augers (heaving sands) as described above and drilling was terminated at that point ' MW-8B The boring was drilled about 4 feet west of MW-8A to a total depth of 50 feet The soils encountered in the bring were similar to those of MW-8A at the equivalent depths ' MW-9 The boring was drilled to a total depth of 45 feet in a location about 65 feet north of the point of release It lies at a point just west of the wooden shed covering ' the former domestic water well No petroleum staining or odor was noticeable in soil cuttings from this boring Soil in the boring consisted of clay and silt except for a minor sandy layers at about the 20 and 45 foot levels 1 MW-10 �. The boring was drilled to a total depth of 45 feet at a point about 160 feet north of the pint of release No petroleum staining or odor was noticeable in soil cuttings from this boring Soil in the boring consisted of clay and silt except for ' a sandy layers at about the 20 and 40 foot levels MW-11 ' The boring was drilled to a total depth of 45 feet at a point about 160 feet north of the pint of release No petroleum staining or odor was noticeable in soil cuttings from this boring Soil in the boring consisted of clay and silt except for ' a sandy layers at about the 20 and 40 foot levels In summary, soils at this site consist primarily of silt and clay to a depth of ' about 65 feet Relatively thin and semi-continuous sand lenses occur at depths of about 20 and 40 feet as shown in the cross-section A-A' (Figure 8) Between ' 65 feet and 90 feet is what appears to be a thick, massive, sand layer composed of fairly well sorted very fine- to medium-grained sand with few fines ' 3.2 Soil & Groundwater Analyses Soil At least three soil samples from each boring except MW-8B were submitted to Sherwood Laboratories of Hilmar (State Certified Laboratory #1400) following Chain of Custody protocol All samples were tested for the presence of benzene, ' 2937 Veneman Ave,#B240 Geo-Phase Environmental Inc Phone (209) 569-0293 Modesto,CA 95356 Fax (209) 569-0293 1