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Drilling Log <br /> ITIT CORPORATION Monitoring Well MW-1 <br /> A Member of the IT Group See Site <br /> Pralect 7-Eleven SS#21756 Owner 7-Eleven Inc For Boring Location <br /> ' Location 353 E Yosemite Manteca CA Prol No 781723 <br /> Surface Elev Total Hole Depth 25 ft Diameter 8 rn COMMENTS <br /> ' Top of Casing Water Level Initial 18 ft Static 17 7 ft <br /> Screen Dia 2 in Length 15 ft Type/Size Sch 40 PVC/0 020 in <br /> Casing Dia 2 fn Length 10 ft Type Sch 40 PVC <br /> Fill Material #3 Sand Rig/Core Mobile Drill B-61 <br /> Drill Co Grego 021622 _ Method Hollow Stem Auger <br /> Driller Toov Garver Log By Bab Butler Date 12120/99 Permit # <br /> Checked By Ed Smonrs License No California RG#4422 <br /> o Description <br /> E o I -G 01 FJ <br /> CL 0 <br /> E # m @_ j rn (Color, Texture, Structure) <br /> a 0 N m K Trace < 10%, Little 10% to 20%, Some 20% to 35%. And 35% to 50% <br /> —2 <br /> 1 <br /> o sH <br /> 06 4 Asphalt over base course sandy gravel <br /> ' < Gw <br /> 2 < o� <br /> 4 < < gw Fine SAND light brown loose dry to most subrounded to <br /> 9 subangular no hydrocarbon odor <br /> < < 3 2 mw-1@5 9 <br /> 6 a <br /> ' 0 <br /> 8d°0 ew Asphalt and concrete fragments in fill <br /> 0 <br /> 9 gw No recovery Concrete chunk m sample shoe <br /> MW-1@10 4 <br /> 10 1 <br /> 20 <br /> " 12 <br /> 1 <br /> 14 = t0 L/Cl. <br /> 0 5 NW-1@15 18 Sandy clayey SILT (15 35,50) grayish-brown medwm stiff moist= <br /> _ 21 to wet no hydrocarbon odor <br /> 16 <br /> ' 18 _ M� Static on 01/25/00 <br /> Groundwater Encountered <br /> 8 Sandy clayey SILT (10,40 50) with sand lenses light brown to <br /> 20 = 09 r1w i@2o 17 greenish gray, slightly mottled semi-plastic moderately stiff no <br /> hydrocarbon odor <br /> 22 Silty fine to medium SAND (15,85) light brown to greenish-gray <br /> SM loose subrounded to subangular wet no hydrocarbon odor <br /> 24 = 9 <br /> 11 MW-1@25 12 <br /> 26 '& <br /> End of borehole at 2S BGS Install monitoring well <br /> ' 02/25/20oo i tt)io9-rear 99 Page 1 of I <br />