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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 18-20,2008 <br /> steel bollards(3) <br /> Top of Steel Cover: 41.5 Top of Steel Cover: +3.2 <br /> Top of Casing: 41.36 =2mm I Top of Casing: +3.06 <br /> weep hole a Lock installed:(&Yno <br /> Ground Surface Ground Surface: 0.0 <br /> Elevation: 38.3 <br /> • Borehole Diameter: 8 inch <br /> y. • p <br /> Centralizer(s): Every 20 feet <br /> Top of Annular Seal: 38.3 ; •A. <br /> Top of Annular Seal: 0.0 <br /> Type of Annular Seal: <br /> Quikrete Portland Cement Slurry <br /> Grouting Method: Tremie <br /> Grout Thickness: 150.0 feet <br /> Elevation values,infeet 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: -28.41 V Depth to Groundwater: -69.77 184 feet <br /> Date of Groundwater Measurement: <br /> 12/8/2008 <br /> Top of Bentonite Seal: -111.7 ° ° Top of Bentonite Seal: -150.0 <br /> Type of Bentonite Seal: <br /> ° o o Pel-Plug Bentonite Pellets <br /> 0 0 <br /> Top of Sand Pack: -115.7 °°o °° Bentonite Seal Thickness: 4.0 feet <br /> Top of Sand Pack: - 154.0 <br /> Type of Sand Pack: <br /> Top of Screen: - 120.7 Top of Screen: - 159.0 2/12 Lapis Lustre Sand <br /> Sand Pack Thickness: 5.0 feet <br /> Number of Bags of Sand: 10.5 <br /> Screen Slot Size: 0.01 inch <br /> Screen Material: Schedule 80 PVC <br /> Screen Diameter: 2-inch <br /> Screen Length: 25 feet <br /> Depth of Borehole Backfill: N/A <br /> Collapse Footage: N/A <br /> Bottom of Screen: -145.7 Bottom of Screen: - 184.0 <br /> Total Depth: -145.7 Total Depth: -184.0 <br /> • (Not to Scale) <br /> ©Forward, Inc.(2009) <br /> 4630 South Highway 94 <br /> North Outer Road Austin Rd Landfill AMW-23 <br /> St.Charles,Missouri 63304 <br /> Phone Fax(638)939-9757 <br /> HERST & ASSOCIATES, INC <br /> Manteca, California As-Built Diagram <br />