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( � i <br /> i <br /> 4" TO 6"THK. CONCRETE <br /> PAD <br /> I <br /> STANDARD STEEL TRAFFICBOX <br /> 'I <br /> PLAN <br /> 4" TO 6"THK. CONCRETE PAD <br /> EXISTING GRADE <br /> A M. <br /> STANDARD STEEL TRAFFIC BOX <br /> LOCKING <br /> WELL CAP <br /> CEMENT SEAL <br /> BENTONITE PELLET SEAL <br /> +•j•' 4-INCH BLANK PVC CASING k <br /> •L :•ti <br /> :ti :{fes BOREHOLE <br /> rL •tit <br /> •�rti 4-INCH PVC CASING (0.020-INCH SLOT) <br /> 1 +ti•t <br /> GROUNDWATER SURFACE (TYPICAL) <br /> fti 1�1 f• <br /> t• <br /> fr 1-INCH BLANK PVC CASING <br /> t% yf: l• <br /> 1 1•ti <br /> fti .tifti CLEAN IMPORTED SAND (LONE STAR <br /> tifti f• COARSE AQUARIUM OR EQUIVALENT) <br /> fti 11 f• <br /> t~ tifti <br /> PVC BOTTOM CAP <br /> ti ti•1•ti•t•S• <br /> r• r•r•t+t•f• I <br /> � �•�•�'�' CLEAN IMPORTED SAND (#3 LONE STAR <br /> 1 S•1.1.1•�• <br /> ti sr�ftifti��r' OR EQUIVALENT) <br /> r• ,f.j.t•f•f. <br /> BENTONITE/CEM ENT SEAL <br /> r• •f•j•j•t•f• <br /> fti ti•1.1•�•t+ <br /> ti•�•�•�•ti• 1-INCH PVC CASING (0.020-INCH SLOT) <br /> t• j.j•f•j.j. <br /> fti tift�ti�tif f+ <br /> �r�r l�f 1• <br /> t ti•t•S•�•ti• <br /> f+. j•r•t•f•j•j• - <br /> PVC BOTTOM CAP <br /> SECTION NOT TO SCALE <br /> F <br /> FIGURE 4. TYPICAL DUAL COMPLETION-GROUNDWATER MONITORING/AIR SPARGING WELL <br /> k <br />