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-^fig <br /> Y� <br /> ly <br /> Monitoring Well MW4 <br /> OrillinLo <br /> Project Chevronport owner Chevron L1.S.A.. Inc. 8 g <br /> �1 203 175 3318 <br /> Location 2400 Air ort lfa . Stockton, CA Project Number See Site Map <br /> Date Drilled <br /> 1/14/91 Total oePtn O Hole [5-0 ft- Diameter 8.25 1n- F-or Boring Location <br /> 53-5f'- <br /> Screen: Dia <br /> Surface Elevation water Level Initial 51-0 ft. 24-hour <br /> in. Length 20 ft. Slot Size 0. 20 in. NaiES: <br /> — <br /> a S[H 40 P✓� X in in sample Column indicates <br /> Casing: Dia P in. Length 40 ft. Type tnat no sample was retained <br /> Filter Pack Material N2/1P m0ntere Sand by the sampler. <br /> Sierra i5acilit Drilling Method fkillow Stem Au er <br /> Drilling Company —.—� <br /> Driller Erin Fruehauf Lag by Crai Fbdertson <br /> Geol°flist/Enginaer, <br /> A.1en 8- Storm License No 4394 <br /> }, <br /> n r in <br /> i Description <br /> o n °;o <br /> � Struc <br /> ture)U o , , <br /> m 09 <br /> 0 Brawn clayey silt (medium stiff, moist, no hydrocarbon odorl <br /> .+ C ° <br /> 2 <br /> 4 <br /> ° o l� <br /> d <br /> S <br /> 0 <br /> B ° ° <br /> I <br /> p 15 <br /> o <br /> •.r <br /> ° <br /> 12 <br /> ML <br /> 15 <br /> 14 17 <br /> ° 25 <br /> o <br /> 16 i <br /> 18 ° o <br /> 20 <br /> B 40' <br /> 20 <br /> 0 0 <br /> 22 <br /> o a <br /> 24 20 <br /> ° ° 25 <br /> 26 <br /> .... p2l67ff491 _ <br /> Page 1 of 3 <br />