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File No. NFS-4342-01 <br /> DATE DRILLED: 3/18/98 DRILLER: Exploration Geoservices <br /> ELEVATION: DRILLING METHOD: Hollow Stem Auger <br /> BACKFILL METHOD: As Shown DIAMETER OF BORING: 8 <br /> LOGGED BY: S. Derrega DEPTH TO GROUNDWATER 11 ft. <br /> O M Cd <br /> Z O ry <br /> g y Log of Exploratory Boring No. MW-5 q cDiE Water <br /> o E m o L- o v . — Level CmStwo1«w <br /> rn 7 m o- <br /> 0 Description rn <br /> SANDY LEAN CLAY,dark brown, moist, stiff. <br /> 1 <br /> 2 <br /> 3 <br /> 4 <br /> 15 NA SILTY SAND wilth minor clay,light olive brown, mica flakes present, SM <br /> 5 5-1 moist, medium dense. <br /> 6 <br /> 7 <br /> 8 <br /> 9 <br /> 10 2.5 LEAN CLAY with abundant silt, light brown, minor minute mica CL <br /> 10 5-2 flakes, grayish lean clay at 10.5 feet, moist, stiff. <br /> 11 - <br /> 12 <br /> 13 <br /> 14 <br /> 14 NA SANDY LEAN CLAY with silt to SILTY SAND with minor clay, light USM <br /> 15 5-3 brown, moist,stiff. <br /> 16 <br /> 17 <br /> 18 <br /> 19 <br /> 5-4 10 NA LEAN CLAY with some sand and abundant silt, greenish gray, CL <br /> 20 <br /> 21 <br /> 22 Boring terminated at 20 feet. <br /> Groundwater encountered at 11 feet. <br /> 23 <br /> Note: Blows/foot count derived from a 3 inch Modified California <br /> 24 Sampler has been converted to Standard Penetration Test Values. <br /> 25 <br /> Earth Systems Consultants Lathrop Effluent LOG OF EXPLORATORY BORING NO. MW-5 <br /> OWN Ponds <br /> Northern California Lathrop,California Figure 12 <br />