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�( r-- i GROUNDWATER <br /> ! r 1 <br /> •.--1�j--�l TECHNOLOGY, INC. <br /> Monitoring Wel l 4 Drilling Log <br /> Project Tc-%,;4r n/St-orktpn OwnerTexaco-Refining._&--marizeupg Sketch Ma]IA1 Location '4 C) c'>�tQr�;�av Project ro�ect Number?92 150-4150 <br /> Date Drilled- 5/24/89 Total Depth of Hole 45 ft. Diameter 10.5 in. SEE S <br /> Surfcce EJevotlon Water Level Initial- 3Q--f t. 2a.-hour <br /> Screen: DIG.- 4 in. Length 20 ft. Slot Size- .020 in. <br /> Casing: DIG. 4 in. Length 25 ft. e PVC <br /> Sierra Pacific <br /> Drilling Company Drilling Method �io1.�ZQm Aug_p� <br /> Driller A,.�bDnberaer Log by M. Ostendorf Notes: X- <br /> Geologist / Engineer F.K. Simoni s License No.- R.r,- tO-422__-_ recovered <br /> $ s Descr)ption/Sol C)cusificotion <br /> o � (Color, Texture, Structures) <br /> 0 <br /> 6 inches concrete <br /> o: ;sw:. Tan, gravelly sand (moist, no product odor) <br /> 2 v: Black, sandy clay (moist, no product odor) <br /> O: <br /> 4 <br /> o .o. (grades tan) <br /> A CL <br /> 6 25 s Tan, sandy clay (stiff, moist, no product odor) <br /> ti <br /> g o: <br /> o: Tan, cla:-ey silt (stiff, dry, no product odor) <br /> (white caliche stringers in sample) <br /> 10 B <br /> 6 <br /> o` <br /> 20 g <br /> 0 14 <br /> L 12 0 I <br /> e o. <br /> p. <br /> 14 ► ML <br /> D c . I <br /> • 7 <br /> 16 0 11 <br /> � 65 13 <br /> O <br /> 18 <br /> Brown, silty clay (stiff, moist, no product odor) <br /> �o o: <br /> 20 :o. D <br /> o <br /> .165 9 <br /> 12 <br /> 27 CL <br /> 24 <br /> s/ae REv c <br /> Page__i_of? <br />