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r <br /> Existing Grade <br /> Vault box with locking security <br /> Concrete <br /> Installation Notes. <br /> Groundwater is anticipated to <br /> occur at about 8-10 feet _ <br /> below surface. Total well Cement Grout <br /> depth is estimated at <br /> 15.20 feet. 1. <br /> RL <br /> Borehole will be advanced <br /> about 5-10 feet Into <br /> groundwater or to theaqultard % \ 2-inch Sch. 40 PVC Blank <br /> whichever Is encountered first. ;^ <br /> Surface seal minimal 5 feet. <br /> Bentonite Clay, typ. 1-2 feet thick <br /> 0' <br /> Sand pack #3 or 2/12 filter sand <br /> extended about 2-feet above <br /> top of slots <br /> Aquifer 2-inch Sch. 40 PVC, <br /> machine cut 0.020" slots <br /> Sch. 40 PVC 2-inch endcap <br /> 10' 20' <br /> Aquitard Borehole, <br /> nominal 8" diameter <br /> Note: This well detail Is schematic only.The actual <br /> monitoring well construction will be modified to field <br /> conditions observed in the exploratory borehole, <br /> Well slots will be raised to observe for separate phase Monitoring Well <br /> product to the point where well seals are not Design Schematic protect No, 4090 <br /> compromised. <br /> Well to be Installed under approved County of Scale: None <br /> Cox and Cox Site Date: Apr. 2004 <br /> San Joaquin Environmental Health Division permit, 595 E. 11th Street <br /> Tracy, CA Figure 1 <br />