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V <br /> E 9i KLEiNFELDEA <br /> . The monitoring wells were constructed as follows: <br /> o The soil borings were drilled with 8-inch hollow-steam augers. <br /> 1 5 <br /> o The well casing is 2-inch inside-diameter, flush-threaded joint, <br /> Schedule 40 PVC pipe. The PVC casing was steam cleaned prior to <br /> installation in each borehole. <br /> i � <br /> o Well screen sections are perforated with 0.010-inch factor <br /> slots. factory-cut <br /> o The annular space between the wall of the boring and the casing <br /> �3 <br /> was 'backfilled <br /> With Lone <br /> Star Industries 0/30 sand to <br /> approximately 1 foot, above the top of the <br /> .. <br /> r perforated section. <br /> 1r <br /> o. A 2-foot berconite plug was placed above the <br /> sand pack to <br /> ' provide a, seal against surface .water infiltration. <br /> O Each well was secured inside a lockin ' <br /> . g we.Ll cover. <br /> Obvious petroleum hydrocarbon contamination and confined , aquifer. <br /> conditions didnot appear to be present; therefore, the screen section was ' <br /> set'.. 1 foot above and 19 feet below the depth of first encountered ground <br /> A water. The soil <br /> is <br /> primarily a silty <br /> _clay andclay; therefore, 0.0I <br /> . r slotted screen and 0/30 filter sand were selected for well construction. <br /> The smaller. .slot size .and finer sand pack were used to best duplicate the <br /> C � <br /> natural aquifer. conditions and aid in development. Specific <br /> construction <br /> U ff <br /> details for each monitoring well are included on . til <br /> _.::. (Appendix:[�) -- - through-.9 - - <br /> ci <br /> ates:7 <br /> ... 3.4 MONITORING WELL DEVELOPMENT. AND� SAMPLING <br /> 4 <br /> The ' three Monitoring wells were developed on March 31,. k.988. Water level <br /> measurements were . collected from each well prior to initiating the well <br /> x development. Each well was first sampled, witha clear acr li^ . <br /> F <br /> Y bailer .to <br /> 47"88--502 <br /> 5 <br /> z <br /> L <br />