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1 <br /> AI <br /> NORTH <br /> SCALE IN FEET <br /> 0 50 100 <br /> W-3 1 <br /> EXPLANATION 3200 <br /> W-20 MONITORING WELL. LOCATION <br /> 3600 BENZENE. CONCENTRATION <br /> PARTS PER BILLION (PPB) ICETTLEMAN <br /> 1 <br /> N.D. NOT DETECTABLE, DETECTION LIMIT 0.5PPB <br /> DIRECTION OF GROUNDWATER FLOW <br /> GROUNDWATER CONTOUR LINE W-8 W-7 <br /> J CONTOUR INTERVAL - 0.' FOOT 1.2 <br /> 1 <br /> AMERIC <br /> SAVING <br /> TOP OF CASING DEPTH TO WATER WATER SURFACE y1t <br /> WELL <br /> ELEVATION, FEET @ SURFACE. FEETb ELEVATION"!. FEETab <br /> W-1 42.87 j <br /> 1 W-2 42.94 57.90 —14.96 <br /> W-2A 42.92 <br /> 57.84 —14.82 ! <br /> W-28 43.12 57.83. —14.51* W;-6 <br /> 57.40 -14.92 <br /> W-3 42.48 1.$ <br /> e W-4 43.06 $8,66 -15.60 <br /> W-5 41.90 57.20 -15.30 <br /> �h W-6 41.00 57.13 <br /> -15.33 <br /> 7F W-7 41.48 56.53 -15.05 <br /> W-8 41.22 -- <br /> i <br /> a Absolute efevatfons basad on city bench mark 786 on the northwest <br /> corner of the Kettlemen Lane and Hutchins Street Intersection. . <br /> Elevation of bench mark 786 is 43.11 feat above sea level. <br /> b <br /> January 18. 1490 <br /> i" <br /> " t Water surface elevation from W-28 is not used for ccntcuring because <br /> 5 well is screen+d at a deeper,interval from the other wells. <br /> r o <br />