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E <br /> 1 <br /> diameter bucket. Each bucket retrived, approximately 1 vertical <br /> foot, will be field screened using the HNu PID and described using <br /> S ASTM guidelines. Any field screen drilled intervals that <br /> ` indicates contamination will be collected, contained <br /> , preserved <br /> and chain of custody delivered to Chemtech Laboratories. Also <br /> i s p es-ewill`be obtain ed�`from tlid top`oi°"gs'ourid ltatesr:^}and ,:the 'bgase• <br /> oda the:;borin <br /> . ._�. 'preserved, =•chaiTr':•af:,-cus'trsdydel"i�tre�eci"to=��tiemteah <br /> ' Por'�•a�a3p3.'3?-i"2sr''�'I"PIi•G yani�``'BTEX'. <br /> Once the boring has been completed a two;;inch- SCH 40 F"48o PVC <br /> casing with np.02. nch: s3 of .will be;install®d "'from F °appr6rimately <br /> the-Y_15-foot-depth.:;to:,the ,IDy foot--=depth from the 10 foot depth to <br /> surface will be 2 inch blank PVC casing. All joints are machine <br /> threaded and sealed with 0 rings. A..!-sand:-envelopeswill-`then=- be <br /> placed--around che:-slot=•.to %the 18.-foot--deptli, and-+.'thenneat- `cement <br /> wither 5%, bentonite wills re_;.used :Co seal:%the �re3l-from_�the: .:.:8 <br /> depth; to-�--the 'surf aCe. A lockable 611 diameter steel casing <br /> monument will be placed ever the well casing for traffic <br /> protection and security. <br /> r WELL DEVELOPMENT <br /> Upon completion of thra 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 Lree water is produced. <br /> 1 STORAGE OF CUTTINGS, PURGED GROUND WATER AND RINSATES <br /> All cuttings produced from the sample borings and installation of <br /> MW4 will be:;contiiined.-on-and,coveredwith - 4 mill-_..-„polyethylene <br /> + ,hinear;, and``staredk in�the---locking.,:compound”behind-:the-:store. All <br /> F,441gate,;,and 4purge&,4ground ,water wi11�. ikewise be'contained:on;;site, <br /> �n :a,,lafi�led'-55 g.7illon:drumpA. <br /> DESTRUCTION OF SA14PLE BORINGS <br /> All'F s$i ple boxingsti`will:-be 'destroyed::using-a 7 neat:cement omith <br /> b8ntonitei-i!mivtu're-,:-and=-the-surface will be patched to match the <br /> preexisting conditions, asphalt, concrete, etc. <br /> DISPOSAL OF EXCAVATED SOIL AND PURGED WATER-RENSATE <br /> f <br /> Upon laboratory results, the contained soil and water will- <br /> disposed of -in accordance--to-- State'of California and County of <br /> San Joaquin guidelines. <br /> REPORT OF FINDINGS <br /> page3 <br /> { <br /> 11111101111i Mm <br />