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1 <br />' PZ Tip Slot Sand Pack (ft) Slurrv Plua (ft) <br />ID Depth Length From To From To <br />' (ft) (ft) <br />307 90.0 7.0 85.0 80.0 80.0 75.0 <br />' 306 74.5 3.0 75.0 70.0 70.0 57.0 <br />305 56.5 2.0 57.0 53.0 53.0 49.0 <br />' 304 48.5 4.0 49.0 43.0 43.0 40.0 <br />' 303 39.5 4.0 40.0 33.0 33.0 29.0 <br />302 28.5 1.5 29.0 26.0 26.0 24.0 <br />' ~ 301 23.5 2.0 24.0 20.0 20.0 17.0 <br />300 16.5 3.5 17.0 11.0 11.0 0.0 <br />' After installation all of the 300 series piezometers were <br />probed and appeared to be functioning properly. Graphic details of <br />' the 300 series piezometer installations are presented as Plate 28 <br />of the Appendix. <br />DRILL HOLE No. 8: <br />' Drill hole No. 8 was originally planned to be located on the <br />second maintenance bench approximately 30-feet north of existing PZ <br />' well 52-4. Upon excavation of a suitable drill site at the planned <br />location a significant amount of water began seeping from the pile. <br />This location was abandoned and a drill site directly above <br />' existing well B2-4 was selected and prepared. Dri11 hole No. 8 is <br />thus located on the outside of an access road leading to the third <br />maintenance bench, approximately 10-feet above existing well E2-4. <br />Well B2-4 is the last or most southerly well on the second <br />' maintenance bench. The decision to drill above well E2-4 was made <br />in an effort to intercept pervious zones which may affect °2-4 ar.d <br />to intercept the zone which began seeping during preparation of the <br />' abandoned site. It was noted previously that a significant amo~:t <br />e`_ seepage was encountered when preparing the first site. The <br />amcu,.t of seepage `_low decreased in a matter of hours after being <br />e:tposed, but persists as a very small but steady stream. Drill <br />' hole No. 8 was started on March 31, 1994 and advanced to a total <br />depth of 85-feet on April 4, 1994. The alluvium/pile contact was <br />encountered at 70-feet. A total of six water bearing intervals <br />' were identified for piezometer installation within the pile. On <br />April 5, 1994 the hole was flushed to remove cutting debris and the <br />400 series piezometers were installed as follows: <br />' 12 <br />