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------- <br /> diameter <br /> - r <br /> diameter bucket. Each bucket retrived a roximatel I vertical <br /> foot, will be field screened using the HNu PID and described using <br /> ASTM guidelines. Any field screen drilled intervals that <br /> indicates contamination will be collected, contained, preserved <br /> and chain of custody delivered to Chemtech Laboratories. Also <br /> i samples rwil3 'be=oiained ''froi'tie`dog o gro.�tid'saaterxzesad.the,:base� <br /> .oE:a.the-�bara;:�, °{preserved _s�•chain:'of::c�st'ody"d"slivered"tc`:.'Chemtech <br /> for�rnalyf:5"''��r�TP�i'�"� •�nc�'''9�'EX'. <br /> Once the boring has been completed a two.:-inch SCH 40 F480 PVC <br /> casing with-t,0_.:02,,-inch,slot:•,will-be"installed from`" 'approximately <br /> the-15:,Moot-depth:to;,the,:.],0 forst;: c3apth; <br /> from the 10 foot depth to <br /> surface will be 2 inch b3.ank PVC casing. All joints are machine <br /> threaded and sealed with 0 rings. A-=•.sand-:-envelope v_will:'�"then"-'be <br /> with-.�..5 bentoniteY�aill�be.;:.used--to'-seal- he well fromlthe .. 8.__-foo <br /> p •aced around-�the•,slots�.to -the-8 foot de th and-them.neat semen <br /> t <br /> depths tto n, the'"° suxgai:e. A lockable 6" diameter steel casing <br /> monument will be placed over the well casing for traffic <br /> protection and security. <br /> WELL DEVELOPMENT <br /> �µ Upon completion of the well the well will be surged and bailed for <br /> development, using a surge block to agitate the sand pack and <br /> ground. water, and a centrifugal pump to purge the well until a <br /> relatively sediment free water is produced. <br /> STORAGE OF CUTTINGS, PURGED GROUND WATER AND RINSATES <br /> All cuttings produced from the sample borings and installation of <br /> HW4 will bevcontained!,on-and covered•::with 4;;-•cm ll:;;polyethylene <br /> r' :,Ilnear,, ar d�"rsttored,I-irl^tbe°:wFlocking-compoundzbehind'�ther.,.stor*. All <br /> r�x, tegadhi�urgedgraund [�ater;wzl]� : i:�Cewsebei'coatained'on:>_site, <br /> -ak3elSBigalkort;drum <br /> DESTRUCTION OF SAMPLE BORINGS <br /> - i <br /> AZI-"-sgiK0T 'bcr ags"�wiii,-r�be'destroyed�dusing.:a_ neat,>..cement:;.with-. <br /> { bentoni:ter;-tki�xtura-z!,-ande:thery surface will be patched to match the <br /> preexisting conditions, asphalt, concrete, etc. <br /> DISPOSAL OF EXCAVATED SOIL AND PURGED WATER-RENSATE <br /> Upon laboratory results, the contained soil and tszter will be <br /> disposed of in accordance to the State of California and County of <br /> San Joaquin guidelines. <br /> REPORT OF FINDINGS <br /> j 1 <br /> page3 <br /> • <br />