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Apiil 1997. . <br /> AGE- Project No: 06-0232-- <br /> age <br /> 6-0232age 5'of.9 <br /> ` 3:2. EQUIPMENT DECdNTAMFNATIN` �} <br /> The`hollow sierii augers were steam cleaned prior to any boring advancement a.§-e ripling tools andr ' <br /> brass"sleeves°used'for sample"collection were thoroughly'washed,witli a'solutiori of Alcon6x,''aiid "' } <br /> rinsed twice with clean water,p'rior to'each sampling run'.• <br /> : <br /> d. <br /> BORING.LOGS; ' <br />' During*i. g activities, sampleduplicat'es were described on bonng logs using;the Unified Soil , <br /> Classification System (USCS);'and were morn tored for the,presence'of.organic vapor.using`a photo- " <br /> ronizat16n•de,tect6f ,PID: Thermo Env . , ~` <br /> ( ironmentai`580A; 10.0 eV, calibrated to isobtt` leve Bonn <br /> logs ar Y ) g <br />' e summarized.in Appendix B. ' <br /> i3.4 MONITORING WE CbN1PLETTON <br /> Soil boring MW-4 was completed as a 2-inch diameter ground;water,monitoring well.'.A'well casing <br /> was emplaced„through,tfie hollow stern.of the.augers.. The,augers were incrementally raised as #3. <br /> •1 - - . <br /> Lonestar Lapis Lus't'er-"S"and was sIbwly.poUr'ed down the arinulia _s bet'weenmthe"w,ell casing and the <br /> inner wall'of the hollow, stem auger. The filtei pack was placed,adjacent td the;sdreen (0:020-inch 5 t <br />' screen' size)Jrom the bottom,of the-borin t`o a point a roxifriatel •I foot above the tq f the <br /> g. p PP Y' p o <br /> screen A”seal"approximately 3-feet thick composed of,bentonite-chips,was placed above-the filter <br /> pack'.and hydrated with'clean'tap wate'r:.The remaining annular,-pace was sealed with a grout-' n <br /> .. ' gr ,. ' <br /> g g S <br /> as built monitonn well canstruction'dia am is'inciuded as Ei ure 3 =Mo�litorirT Well Corastr et f <br /> , <br /> Diagr _ <br /> - <br /> I .,1, • Y ��. �'IV N L, y.`. ,. �. .0 <br /> t A,reference point was'.imrke'd on,the top;ofl the NVell head -and was surveyed the oto the<nearest. �'y •` ?n <br /> „ ., <br /> 11100th of footao determine:the elevation`relative`to existing wells The"results ofthe niohitioring ` <br /> W61 <br /> l survey are cbntdined in'T able•4'-�. Relative-Grormd'Water Ekvatrorrs: :w! <br /> I y <br /> 4n +19 July 1996;'nionrtorin weli,MW-4 was developed utilizingi a two-stage submersible,0urhp T. <br /> Graund:water was'°purged from MW-4'until the well was apparently sediment=free: Approximately <br /> I <br /> 20 gallons'of ground.water':was,purgedtfrom inonitoriiig well`MW 4.'Purged group water, as,- <br /> containerized in properiyYlalieIed D:O T model 17H 55'gallon'dr -and sto'ted-'on-site' n anrarea F <br /> 'lacking•public.accessrble <br /> , it 1 ` , r •:; r + � " a' + <br /> 3:5: QUARTERLY-GROUND WATER 1VIOlVITORINC"r'ANp SAMPLINCr _ <br /> . 1 <br /> on"19 july 1996 and on 23,August'41996,:the,depths'to ground water in monitoring wells MW-1;.. <br /> F " <br /> IEr •` ,. � -;• ', F + ;�: ` -•r ' _ 1 L ' f • ' ( '�Y� ,.' j ` Lfr l ,'r � ., k� '' �,' ' <br /> , <br />