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:� �� yr z,• 4g, �n ,�r" .m �- �., h .. �` :,w �� - "c",' / ,, »d. , Asx. <br /> S. <br /> Fa <br /> A ten-inch diameter borehole was advanced and sam <br /> Alec? to the <br /> appropriate depth :sing hallow 'tem auger drilling techniques; <br /> r-k a A capped, four-Inch dfat eter Scheduls 40 PVC well screen <br /> f approximately telt feet in lengti,, wit2, 0„020 screen:_ Ize was <br /> placed ;h rhe borehole. .All well casin <br /> r� d :materials were steam <br /> i , <br /> cleaned prior t's2nstallatiun; <br /> a Blank four-Inch diameter, <br /> f9 Llush-threaded Schedule 40 pVC was <br /> installed from thR top of the screen to".the Sround surface, A cap <br /> �4 was placed on top of the casing; <br /> A sand pack cnasfsting of washed sand was placed ir, the annulus of <br /> t'te borehole to a depth F proximate) too feet above tha <br /> �, y <br /> the slotted casing; <br /> top of <br /> o A minimum three font thick bentonite pellet seal was placed above <br /> the sand pack; aud, <br /> o The remaining annu-Ar space Was filled to the grcut,d surface with <br /> f +;� it bpntonice/slurr <br /> Y• .. A Iaci:i„S plastic' cap was installer -in:t11e <br /> top of ihE casing below.a Christi box, which was grouted 1,1 plata <br /> a^ ':he ground surface ta-complete installation, <br /> 3.2.2 Cro nd 6later Sart i aznal sis <br /> 1 <br /> ' Four grouted water sanples, oneualit control'du fLc <br /> Itcate.. '{ . <br /> ? q y P Id blank, <br /> and One travel blank sample were collected for chemical, anaiys.fs. Samples <br /> were analyzed .for total petroleum hydrocarbons- (TpH) and benzene, toluene, <br /> bK .cylene, . and ethylbenzene by EPA Method 8015 Modified and Hethod b0?; <br /> chlorinated ,golvants by Method 8010.. <br /> Prior to samp3e collection, each v,.11 was evacuated using a submersible <br /> Pump and a teflon bailer. The pump usF.: <br /> :.. P was to evacuate a miaimu.0 of fear <br /> casing volur!es Of flu” <br /> d prior to aampling, .;A teflon bailer Pias used, to <br /> sAG01.019 r <br /> January 31, ;1989 <br />