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r _ !� - x kF ;•fir e - -.4 \ q <br /> . 06 April 1999 _.F 4 r- a <br /> G' AGE-NC Project No: 98 051 I x <br /> Page 5-of 5 <br /> 7. <br /> i depth,tirrie, date and sainpler's initials ,4pprepriately,sea]ed:and labeled samples wr1I be placed lzi I <br /> a chilled coritainer under ice and transported under chain of-custody procedure to a DT certified. <br /> laboratory3. <br /> =: -Y , <br /> " 4.3 4 SITU GROUND'WATER SAMPLINCrPROCEDURES:� <br /> - = r <br /> F _ _ For the collection of grab ground water„samples, soilJrprobe rigs'will'be advanced to the top of;= <br /> e the ground water lAle as identified'by collection of a`saturated soil-sariiple Onee ground water.has . <br /> a . <br /> been:&ncdunt&ed,`a_Geoprobe push=driven water.sa-iipling"dcv'�ce'i�iil be advanced two'to three feet <br /> info the water beairing z6ne.:4Grab ground water,sdmples;will.be collected•iising a Geoprobe water _ = <br /> t:"sampling_assembly=fitted.with a precleaned one-inch 0 01 slotted:ternporaiy weld.screen: Each * r <br /> :.ground water sample will be <br /> :.groundby Iowerii�g a Teflon bailer through the-hollow center of the. <br /> - usli`rads into-tho screen section;-_S'am les for:;I3TEX;'I PH- ; and fuel ox r eliate anal 5es',Will-be-,. <br /> collected in laboratory=supplied;40-m1 VOA vials contaimng.0 5 nil of hydrochloric acid as:sample <br /> preservative The labeled vials will be:placed it a chilled container.under ice acid transported_under <br /> charn of-'custody to a DTSC-certified`laborator,y - <br /> * <br /> 1 v'Y _ <br /> 4 4. EQUIPMENT DECONTAMINATION. <br /> All sarriphng tools used for:sample collection�vill ba'thoroughly iinsed with clean.wa#er after.being <br /> washed with a solution of Alconox. All,probing:rods will be cleaned prior to advaricement.at each <br /> probe b" 'ig Iocarion. ' <br /> 4.5. BORING ABANDONMENT . <br /> -A1L soil borriigs will lae 'pernlaneii'tly sealed tb prevent �ertrcalmigration of'eozrtaminants. Soil41 <br /> . <br /> borings shail,be abalidoned-by backfilling with bentonite or_cernerit:bentonate slurry frgm the total,;' 'a <br /> j” depth to surface.giade. i = �:c <br /> 1 <br /> A <br /> 9 <br /> :47 ^� y µ ti- ? a} Adranced;GcoEnvironm!nlal,,Fnc 3L <br /> �' 7•e.F_ S '^ �, C �. r- _` - f ?'S. 6 _ <br /> T. <br />