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5!•)MIPL I HIS PROTOCOL <br /> Page: <br /> cuttii,igr, be incorporated into tho troI troatment program and <br /> abandoned in place after treatrnpnt. <br /> WELL CONSTRUCTION AND DEVELOPMENT <br /> All materials users in well construction will be <br /> thoroughly cleaned prier, to introduction into the baring. A <br /> bentonite or berrtortite and cement slurry will be placed at <br /> the bottom of the boring as, necessary. After the seal has <br /> been allowed to set enough to r-support the weight of the <br /> casing a 2 to 6 inch OD well casing (stainless steel or PVC) <br /> with and end cap, actory perforated for placement into the <br /> saturated zone, will be placed in the boring. The screen and <br /> filter pack sizes will be designed based upon sieve analynis <br /> data for samples as; representative as possible of the water <br /> bearing formation. The rasing and errd caps will be threaded <br /> or joined by stainless steel screws, no FVC cement will be <br /> used. The filter pack will extend two feet above the <br /> perforated zone. A seal of bentonite pellets one to two feet <br /> thick will be placed in the annular space above the filter <br /> pack, followed by a bentonite or cement slurry tt, grade. All <br /> filter pack and well seals will be tremrnied through the auger <br /> as necessary. <br /> A water-tight cap will be placed on top of the well <br /> casing inside a water-tight well box cemented into place. <br /> All wells will lar" labeled on the exterior of the well head <br /> containment structure with well type and identification <br /> number. On the interior, the label will contain well type, <br /> identification number, depth, and the perforation interval. <br /> Monitoring wells will be developed by airlifting with <br /> compressed nitrogen or pumped using suitable pumping <br /> equipment. <br /> SAMPLING <br /> All soil and groundwater samples will be properly <br /> labeled with project number, date collected, and sample <br /> identification number. All samples will be handled using <br /> standard chain of custody procedures. f=ield records will <br /> document the above information and other significant data, <br /> �:,,i as rrarnes of on-site personnel, sampling methods, date <br /> - _ aril time of._...sriipl_frig, fhe nr.rrnbei r,f w11 vtlurri�d rEm+ vr3 <br /> before sampling, and any preservatives added or filtration <br /> performed on samples. <br /> The samples will be refrigerated and packaged <br /> t-r immediately for delivery i;,i the laboratory, and will under no <br /> circumstances be opened by anyone other than laboratory <br /> l.ersonnel. Chain of Custody records will be maintained at <br /> all times. <br />