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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: November 4-12,2008 <br /> . steel bollards(3) <br /> Top of Steel Cover: 37.7 Top of Steel Cover: +2.8 <br /> Top of Casing: 37.15 Top of Casing: +2.25 <br /> weep hole Lock installed:(&yno <br /> Ground Surface ` <br /> Elevation: 34.9 Ground Surface: 0.0 <br /> ;..�Y Borehole Diameter: 8 inch <br /> Top of Annular Seal: 34.9 ; •' Top of Annular Seal: 0.0 <br /> Centralizer(s): Every 20 feet <br /> Bottom of Steel Cover: 32.7 Bottom of Steel Cover: -2.2 <br /> Type of Annular Seal: <br /> Quikrete Portland Cement Slurry <br /> Grouting Method: Tremie <br /> Grout Thickness: 114.0 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: -25.28 Depth to Groundwater: -62.43 142 feet <br /> Date of Groundwater Measurement: <br /> 12/8/2008 <br /> Top of Bentonite Seal: -79.1 ° ° Top of Bentonite Seal: -114.0 <br /> °°° °° Type of Bentonite Seal: <br /> ° <br /> ° ° °°° Pel-Pluq Bentonite Pellets <br /> ° ° Bentonite Seal Thickness: 4.0 feet <br /> Top of Sand Pack: -83.1 ° ° Top of Sand Pack: -118.0 <br /> Type of Sand Pack: <br /> Top of Screen: -87.1 Top of Screen: - 122.0 2/12 Lapis Lustre Sand <br /> Sand Pack Thickness: 4.0 feet <br /> Number of Bags of Sand: 8 <br /> Screen Slot Size: 0.01 inch <br /> Screen Material: Schedule 80 PVC <br /> Screen Diameter: 2-inch <br /> Screen Length: 20 feet <br /> Depth of Borehole Backfill: N/A <br /> Collapse Footage: N/A <br /> Bottom of Screen: - 107.1 Bottom of Screen: -142.0 <br /> Total Depth: -107.1 Total Depth: - 142.0 <br /> . (Not to Scale) ©Forward, Inc.(2009) <br /> 4630 South Highway 94 <br /> North Outer Road Austin Rd Landfill AMW-21 <br /> St.Charles,Missouri 63304 <br /> Phone(636)939-9111 <br /> Fax(636)939-9757 Manteca, California As-Built Diagram <br /> HERST & ASSOCIATES, INC <br />