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ME <br /> well construction details are presented on Plates 2-4. <br /> Test borings were advanced with 7-inch o.D. hollow-stem <br /> � <br /> augers to the desired sampling depths. Soil samples were <br /> five foot intervals, with the <br /> collected routinely at <br /> two samples could <br /> exception of well W-5. In that boring, <br /> not be retained in the sampler due to loose, moist, fine <br /> sand. A 2 inch I.D. modified "California" sampler with <br /> brass sleeves was used to obtain soil samples. The brass <br /> on and sealed With <br /> sleeve ends were covered with teflcold <br /> tightly wrapped with tape, and kept in <br /> i plastic caps, <br /> storage for transport to the chemical laboratory. <br /> The borings terminated in a comparatively low permeability <br /> 1 silty clay zone. The drill cuttings from each boring were <br /> en plastic, penning chemical <br /> placed on 6 mil visque <br /> results. Flush joint, threaded two (2) inch PVC well <br /> casing (with slip end caps) was installed in the borings. <br /> Sand pack was placed around the casing to at least 2 feet <br /> above the slotted ( .02 inch) perforations. A one (1) foot <br /> bentonite layer <br /> was placed on top of the sand pack and <br /> iravel aggregate concrete sealed the well. <br /> --_ then a p ea g <br /> used to sear the flush-mounted, <br /> Portland cement was <br /> vaults. The well vaults and the <br /> watertight locking well <br /> --- - -- - �-- - were placed. over the <br /> -- -- - - --- - -roof brass- caps - -- - <br /> lacking . waterp_ <br /> heads to prevent surface runoff from entc.ring the wells. <br /> i <br /> �swv..swi! <br />