123-TRI     ETHANE,    1,2,3-      1,2-
                                                    METHYL     CHLORO-      1112-      TRI-      DIBROMO
                                                    IODIDE     PROPANE     TETRA-     CHLORO     ETHANE
                                                    WATER       WATER      CHLORO-    BENZENE     WATER
                                                   UNFLTRD      WHOLE      WAT UNF    WAT, WH     WHOLE
   WELL NUMBER      STATION   NUMBER      DATE     RECOVER      TOTAL        REC        REC       TOTAL
                                                    (UG/L)      (UG/L)     (UG/L)     (UG/L)     (UG/L)
                                                    77424       77443       77582      77613      77651

        1            252505080302501    1/28/98     <.076       <.070       <.044      <.266      <.036
        2            252624080302901    1/28/98     <.076       <.070       <.044      <.266      <.036
        3            252716080290601    1/27/98     <.076       <.070       <.044      <.266      <.036
        4            252842080290501    1/27/98     <.076       <.070       <.044      <.266      <.036
        5            252940080261204    1/29/98     <.076       <.070       <.044      <.266      <.036
        6            252951080251201    1/29/98     <.076       <.070       <.044      <.266      <.036
        7            254131080234401    2/11/98     <.076       <.070       <.044      <.266      <.036
        8            254156080214601    2/10/98     <.304       <.280       <.176      <1.06      <.144
        9            254201080281701    2/11/98     <.304       <.280       <.176      <1.06      <.144
        10           254207080202201    2/10/98     <.076       <.070       <.044      <.266      <.036
        11           254938080170902     2/9/98     <.304       <.280       <.176      <1.06      <.144
        12           254958080171601    2/12/98     <.304       <.280       <.176      <1.06      <.144
        13           255052080245001    3/18/98     <.304       <.280       <.176      <1.06      <.144
        14           260053080144701    2/12/98     <.304       <.280       <.176      <1.06      <.144
        15           260223080143301    3/16/98     <.304       <.280       <.176      <1.06      <.144
        16           260234080211701    1/26/98     <.076       <.070       <.044      <.266      <.036
        17           260322080162103    3/17/98     <.304       <.280       <.176      <1.06      <.144
        18           260332080182101    3/17/98     <.304       <.280       <.176      <1.06      <.144
        19           260539080155101    3/12/98     <.304       <.280       <.176      <1.06      <.144
        20           260738080162701     3/9/98     <.304       <.280       <.176      <1.06      <.144
        21           261028080154901    3/12/98     <.304       <.280       <.176      <1.06      <.144
        22           261158080151301    3/11/98     <.304       <.280       <.176      <1.06      <.144
        23           261404080100601    3/10/98     <.304       <.280       <.176      <1.06      <.144
        24           261533080141101    3/11/98     <.304       <.280       <.176      <1.06      <.144
        25           261830080073101    3/10/98     <.304       <.280       <.176      <1.06      <.144
        26           262156080063601    1/22/98     <.076       <.070       <.044      <.266      <.036
        27           262649080053801    1/21/98     <.076       <.070       <.044      <.266      <.036
        28           262858080083901    1/22/98     <.076       <.070       <.044      <.266      <.036
        29           263638080040301    1/21/98     <.076       <.070       <.044      <.266      <.036
        30           263656080121901    1/20/98     <.076       <.070       <.044      <.266      <.036