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<br /> • 1.0 OBJE(:rfVF.
<br /> Ihie oh;i.c.tive of thi, pmccdu?e is tri Collect a dzsc:rew soil sample at depth dr.d =,over it for visual znspeclivn
<br /> and/ot chutuezd ,maly,;is
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<br /> 2.0 BACKGROUND
<br /> I2.1 Definition%
<br /> I Gcoprohe`0 Sail Probin- Ylachme. A vehicle-moonted, hydraulically-pvwc,rcd machine uldt utilizes
<br /> static Coree and percussion to advamc.%ma11 cbarncter s&nplxnZ topls xrliv the.subsurface J OI collcetanc soil
<br /> COW. .orl �a_5, or groundwater s unples
<br /> IGcoprobe4'fy a re?mered trademark of Kigr F.ngwrrrjnR, Inc loliiw Kanas
<br /> Large Boa a Soil Sampler: A 24-inch long x 1-1/2-inch(G 10 tarn x 38 mat)diameter soil sampler capable
<br /> I of lecovertng a dtscretc.sample that measures up to 120 ml :n volume to the form of a 22-inch x 1-1/1 C-
<br /> rmh (559 mm x 27 nazi[)core contained inside a,rernovahlc.liner
<br /> I Liner: A 24-inch lona x E-1/3-itch diameter(6I0 mm x 29 mm)tt:movableAeplaccublc. this-walled tube
<br /> inserted rn ode the Large Rore Sample Tube for tltc purposr,of contarring and .,tui»g soil �,xnple;, i inti
<br /> ittalerrals includc hi ass, stainlcs�,stt'c.l, leflon' and clear plastic(cellvlosc aceTatc hutynaw)
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<br /> 2..2 014,Lusstott
<br /> Vhc Large Got. (1.E3)Soil Samplerit. used prtxtt;rraly as a d1.Y;tc tc interval sanapl,,r, that rti for the rc-Lovery
<br /> of a s,-rmpl,at<i prescnbcd depth In certain carc urnbl-snces it is also tibud for continuous connS,
<br /> I 'I tic, assembled Large Bore Sampler is connectcd to lire leading end of a Geoprobe brand probe rod and
<br /> cit even into thi subuurface using a Gcoprobc Soil Probing Macbine Additional probe.rod, ale connor-ted
<br /> in tiuccos,,ion to advance:thr,sampler to depth i he~ampler rexl lrls se�lecl(closed} Fay a prstt,n rip as tt tc
<br /> being di rvc_il The piston is heldin place by a reverse..threaded stop-pin at the rrailtn 7 endo[ the sarnplet
<br /> When the eainplar tap ha-, reached the top of the desired sampling im real a sures of exiiynsion rod-,
<br /> I ,.uffzctent to reach depth, etre coupled together and lowered down the inside diameter of the probe rod',
<br /> The extension rod,arc thin rotated c,loc.kwv,c(using a handle) Thr:male thread`can the leading end of the
<br /> --mctt5ifn cods eogage the fc,tizalc threads on the top crid of the sucip-1»n,and Ilse pin rti rentcaved After the
<br /> e xtcrt,ron rods and stag-pm Crave been removed, the r(K)l rs adv~a»c,ccs an adrlrttonal 24 Inr-hcs The
<br /> piston rs displaced mild[ t,ho sampler body by the s,od a% the >ample rs crit To rcc over the sample the
<br /> s,xmplcr is retrieved f.orn rhe hale and the triter cmuinmg the soil sample as removed The optrntaon E,
<br /> illustrated all F-tgurc I
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