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40. -;267 7396 P. 04 <br /> .�"JUN44-2004 0'1i51 PM P` MER. CEG E\/) <br /> ,I <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 <br /> depth is estimated at <br /> 15-20 feet. <br /> Borehole will be advanced Cement Grout <br /> about 5-10 feet Into <br /> groundwater or to the aquitard <br /> whichever Is enebuntered first. <br /> IIA� <br /> Surface seal minimal 5 feet. <br /> 2-Inch Sch. 40 PVC Blank <br /> Approx. depth of excavtion <br /> varies 10,5-13 feet. <br /> -- Bentonite Clay, typ. 1 -2 feet thick <br /> 1 p, <br /> Sand pack #3 or 2/12 fllter sand <br /> NZ <br /> extended about 2-feet above <br /> top of slots <br /> 2-inch Sch. 40 PVC, <br /> A'q uifer machine cut 0.020" slots <br /> I <br /> Sch. 40 PVC 2-inch endcap____. <br /> II 10� 20' <br /> a 077777 <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. Monitoring Well MW-3 and 9 <br /> i Well slots will be raised to observe for separate phase Re-installation <br /> product to the point where well seals are not Design Schematic Project No. 4090 <br /> compromised. Scale: None <br /> Well to be Installed under approved County of Cox and Cox Site Date: June 2004 <br /> San Joaquin Environmental Health Division permit. 595 E. 11th Street <br /> Tracy, CA Figure 1 <br />