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Well Location: Drilling Contractor: Precision Samping, Inc <br /> Northern California Youth Correction Center Lead Driller: Paul Draeger <br /> Stockton, California Drilling Dates: December 1 -3,2008 <br /> • steel bollards(3) <br /> Top of Steel Cover: 39.1 Top of Steel Cover: +3.7 <br /> Top of Casing: 38.44 Top of Casing: +3.04 <br /> weep hole ' Lock installed:(&Yno <br /> Ground Surface ` <br /> Elevation: 35.4 Ground Surface: 0.0 <br /> Borehole Diameter: 8 inch <br /> Top of Annular Seal: 35.4 F = • •. Top of Annular Seal: 0.0 Centralizer(s): Every 20 feet <br /> Type of Annular Seal: <br /> Quikrete Portland Cement Slurry <br /> Grouting Method: Tremie <br /> Grout Thickness: 111.0 feet <br /> Elevation values,in feet Depth values,in feet above(+) Casing Material: Schedule 80 PVC <br /> above Mean Sea Level or below(-)Ground Surface <br /> Casing Diameter: 2-inch <br /> Casing Length(including Screen): <br /> Elevation of Groundwater: -27.59 Depth to Groundwater: -66.03 139 feet <br /> Date of Groundwater Measurement: <br /> 12/8/2008 <br /> Top of Bentonite Seal: -75.6 ° o Top of Bentonite Seal: -111.0 <br /> Type of Bentonite Seal: <br /> Pel-Plug Bentonite Pellets <br /> 0 0 <br /> Top of Sand Pack: -79.6 ° ° Top of Sand Pack: - 115.0 Bentonite Seal Thickness: 4.0 feet <br /> Type of Sand Pack: <br /> Top of Screen: -83.6 Top of Screen: -119.0 2/12 Lapis Lustre Sand <br /> Sand Pack Thickness: 4.0 feet <br /> Number of Bags of Sand: 7_5 <br /> Screen Slot Size: 0.01 inch <br /> Screen Material: Schedule 80 PVC <br /> Screen Diameter: 2-inch <br /> Screen Length: 20 feet <br /> :r,• <br /> Bottom of Screen: -103.6 Bottom of Screen: -139.0 Depth of Borehole Backfill: N/A <br /> Collapse Footage: N/A <br /> Total Depth: -103.6 Total Depth: - 139.0 <br /> (Not to Scale) ©Forward, Inc.(2009) <br /> 4630 South Highway 94 <br /> North Outer Road Austin Rd Landfill AMW-22 <br /> St.Charles,Missouri 63304 <br /> Phone(636)930,9111 <br /> Fax(636)939-9757 Manteca, California As-Built Diagram <br /> HERST & ASSOCIATES, INC <br />