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14-Inch dia.steel security vault <br /> 0— A B C D <br /> Neat Cement(Sanitary Seal) <br /> 20— ; i 1+ " 16-inch dia.borehole <br /> USGS Corcoran Clay(E-Clay) <br /> Bentonite Clay Seal(Chips) <br /> (approximate thickness) <br /> �— 140— t�? 2.5-Inch dia.SCH 80 PVC well casing <br /> 260— <br /> Filter pack <br /> 2.5-Inch dia.SCH 80 PVC well screen(0.030 slot) <br /> 280— a 2.5-Inch dia.SCH 80 PVC well casing and cap <br /> 285— <br /> 295— a. 2.5-Inch dia.SCH 80 PVC well casing <br /> ✓-.�ryi p{ Bentonite Clay Seal(Chips) <br /> 430- <br /> 440— <br /> .74 <br /> Filter pack <br /> 2.5-Inch dia.SCH 60 PVC well screen(0.030 slot) <br /> 460- <br /> 465— 2.5-Inch dia.SCH 80 PVC well casing and cap <br /> 485 .. c%""=;�' .•, ' Bentonite Clay Seal(Chips) <br /> iy <br /> 530— <br /> Filter pack <br /> 540— e <br /> 2.5-Inch dia.SCH 80 PVC well screen(0.030 slot) <br /> 12-Inch dia.borehole <br /> Notes: 560—565— <br /> 580— <br /> 2.5-Inch dia.SCH 80 PVC well casing and cap <br /> ' <br /> Final Design will be based upon <br /> the geophysical log. Fl(�vf7 e-Inch dia.borehole <br /> Final Design to be approved by <br /> EHD prior before construction. ) 1� Bentonite Clay seal(Chips or Pellets) <br /> Set of centralizers (3 per set)to be <br /> placed top and bottom of <br /> screens and between at 100 770— <br /> foot intervals with a minimum 780— Filter pack <br /> of one mid-section of clay <br /> Intervals. 2.5-Inch dia.SCH 80 PVC well screen(0.030 slot) <br /> Base of freshwater approxi- Boo— <br /> mately800feetbgs 805— 2.S-Inch dia.SCH 80 PVC well casing and cap <br /> NOTENOTTOSCAIE 815— <br /> 850— Benton(te Clay Seal(Pellets) <br /> Well Construction Typical Nested Monitoring Well <br /> Rolls <br /> Construction Details <br /> Tracy Subbasin For MW-202 <br /> Tracy Subbasin GEI August 2023 <br />