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Geb(ggica[ Techrcws Inc. <br /> . Borehoae : Log . <br /> Project Name Former Moresco Property Borehole No. SB-1A Page 1 of 4 <br /> Project No. 251.2 Date 04/21/95 Contractor Osterberg & Stewart Inc. C57 446670 <br /> Area & County 16865 Gawne Rd., Stockton Drilling Metholi Hollow Stem Auger <br /> Field Geo/Eng T. McDonald Elevation of Measuring Point N/A <br /> 1� <br /> Tot. Dep. 100' Tot. Casing Dep. N/A Annular Seal N/A Filter Pack N/A Grout 100'-0 <br /> Borehole Dia., 7.25„ Casing Dia. N/A Screened Interval N/A Slot Size N/A Water Level ±110' <br /> U Description Remarks <br /> V <br /> 0 �ologic record 0-50 ft from the SB-1 boring <br /> drilled 4/5/95 PID Reading <br /> 5 0 <br /> r E <br /> Pea Gravel 0-17' <br /> b0 <br /> 10 0 <br /> f; <br /> O <br /> o <br /> V <br /> 15 0 0 <br /> � z <br /> SILTY SAND(5Y4/4)very fine to fine, <br /> M L plastic clay matrix,reduced Fe strong 257 ppm* <br /> hydrocarbons odor <br /> SAND(2.5Y5/6)fine to medium,well graded, <br /> `r E SW local silt layers,loose,hydrocarbons odor 177 ppm* <br /> V <br /> SANDY/CLAYEY SILT(mottled)very fine to 19pp m* <br /> fine,root tubes,semi hard,secondary porositySC <br /> travel,hydrocarbons odor <br /> Notes: SiltClay Sand (5Y5/6)=Munsell soil color description <br /> Gravel/Cobbles Lab Analysis Sample Grain size is referenced to the Modified <br /> Wentworth Scale <br /> rev 3/92 *Suspected low reading due to faulty PID Drawn 05/05/95 <br />