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FIGURE 7 <br /> Soil Gas .SEMI-PERMANENT GAS PROBE Design <br /> DEPTH BELOW" <br /> SURFACE ----TRAFFIC RATFD e.NCH DIAMETER <br /> TRAFFIC BOX WITH BOLT DOWN LID <br /> 6 INCHES ---�._;�� SECURED WITH CONCRETE. <br /> GAS TIGHT IMPERIAL FITTING <br /> �I <br /> ATTACHED TO TWO WAY VALVE.. <br /> - - GAS TIGHTTWO WAY VAL.VL'_ <br /> I <br /> �- --HYDRATED BEN"FONI TF. <br /> 1/4 INCH FEFLON TUBING <br /> W:cLI.INSTALLAI[ON <br /> HAND AUGER <br /> MAXIMUM DEPTH WELL <br /> AND BORING 5 FEET <br /> �Ilr <br /> I FOOTABOVE - <br /> TOP OF SAND <br /> - DRY GRANIIL.AR BENTONITE. <br /> it � ------ <br /> 05FEET ABOVE Ij) <br /> TOP OF SCREEN .. - <br /> ' — <br /> 5 PC-ET 43 CLEAN SAND PACK <br /> -. _ _. }j-. <br /> SCREENED INTERSAI r f <br /> WILL BE BE LWEFN 0.030 INCH SCREEN PVC,SCH 40 <br /> 0.�FFET IN I ENGTH 7 <br /> --(,AS"FIGHT SI.IP ON PVC F.NO C'AP <br /> 6.OFFF <br /> DIAMETER OF BORING <br /> 3 Y,INCHES <br /> MAXIMUM DEPTH WELL <br /> AND BORING 6 FEET <br /> INSTALLATION <br /> I- I I.ANDAUGF.RTO SIX FOOT DEPTH,GEOLOGIST MONITORS WITH PID AND DESCRIBES SOILS IN ACCORDANCE:WI Fl THE <br /> UNIFIED SOIL CLASSIFICATION SYSTEM. <br /> 2. INSTALI.A SECTION 01:3/4"DIAMETER PVC SCREEN AND 1A INCH"TEFLON TUBING WITH AIR TIGHT END CAP AND AIRTIGHT TOP CAP Wi'lI i <br /> CAPPED IMPERIAL FITTING. <br /> 3, INSTALL 03 CLEAN SAND AROUND SCREEN INTERVAL TO 0.5 FEET ABOVE TOP OF SCREEN. <br /> 4. INSTALI, I POOF'"IFilCK GRANULATED BENTONITE PEI.,LETS ABOVE,SAND PACK <br /> INSTALL HYDRATI{D BENTONITE FROM TOP OF BENTONITE PELLETS TO WITH 6 INCHES OF SURFACE, <br /> 6, LABEL 101)OF CASING AIR MIGHT CAPAND VALVE WITH PROBE HOLE ID . <br /> 7 PIACI:6 INCH DIAMETI�R TRAFFIC RATED FLUSH MOUNTED TRAFFIC VAIJI11 WITH BOIX DOWN LID.SECURE W1 1'I I CONCRETL. <br /> 8 LI{1"WELL S"IABALIZE AT LF,AST 48 HOURS PRIOR TO SAMPLING. <br /> 9. OR I"AIN SOIL GAS SAMPLES AS OUTLINED IN WORK PIAN <br />