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I The soundings were converted using casing-top elevations previously established by RFA The elevation data were used to calculate the present ground-water flow direction and gradient by the three-point method The local flow direction on April 2, 1996 was calculated at N85°E along a virtually flat gradient of 0 0033 foot/foot (see the Ground-Water Gradient Map, Figure 3) The flow direction has shifted ,lust 2° to the north since November 30, 1995 when it was ' approximately N870E along a gradient of 0 004 foot/foot Sounding and flow direction data are listed in Table 1 TABLE 1 ' Ground-Water Sounding Data Carmen Punla Property-Stockton Well Sounding Depth to Casing-Top Water Table Flow Direction 0 Number Date water Elevation Elevation Gradient ObI t) (Tit) (Ft AMSL) (Ft BMSL) MW-1 10/01!93 3965 10 87 -2878 N89-E(& 003 ' 02/06/95 3672 -25 85 N83°E G 004 0 05/09/95 3292 -2205 S80°E a 003 8/11/95 3249 -21 62 S89°E @ 003 11/30/95 32 30 -21 43 N87°E 9 004 ' 04/02/96 2899 -1801 N851E Q 0033 MW-2 10/01/93 3831 9 65 -2866 02/06/95 35 17 -25 52 05/09/95 3135 -2170 111195 3089 -21 24 11 11/30/95 30 66 -21 Ol 04/02/96 2728 47 63 ' MW-3 10/01/93 39 17 10 28 -28 89 02/06/95 3619 -25 91 05/09/95 3248 -2220 08/11/95 3207 -21 79 ' 11/30/95 3185 -2157 04/02/96 2840 -1812 ' Ground-Water Sampling P g Prior to normal well-sampling procedures on April 2, 1996, ground-water sampling equipment was steam-cleaned and/or washed in Llqulnox®prior to sampling and between samplings of each well Water-condition parameters of temperature, electrical conductivity, and pH were measured and logged during well-purging prior to sampling the wells Purging was continued until at least three well-volumes of water were removed from each well, and water-condition parameters had 1 stabilized Well Sampling and Monitoring Logs are included as Appendix A ' W W Irwin Inc Projects 33236 00&33236 01 Apnl 1996 4