ETHANE,
                                                              1,1-DI-      1,1,1-     1,1,2-     1,1,2,2
                                                  1,1-DI-     CHLORO-       TRI-       TRI-      TETRA-
                                                  CHLORO-      ETHYL-     CHLORO-     CHLORO-    CHLORO-
                                                   ETHANE       ENE        ETHANE     ETHANE     WAT UNF
   WELL NUMBER      STATION   NUMBER     DATE      TOTAL       TOTAL       TOTAL       TOTAL       REC
                                                   (UG/L)      (UG/L)      (UG/L)     (UG/L)     (UG/L)
                                                   34496       34501       34506       34511      34516

        1            252505080302501    1/28/98    <.066       <.044       <.032       <.064      <.132
        2            252624080302901    1/28/98    <.066       <.044       <.032       <.064      <.132
        3            252716080290601    1/27/98    <.066       <.044       <.032       <.064      <.132
        4            252842080290501    1/27/98    <.066       <.044       <.032       <.064      <.132
        5            252940080261204    1/29/98    <.066       <.044       <.032       <.064      <.132
        6            252951080251201    1/29/98    <.066       <.044       <.032       <.064      <.132
        7            254131080234401    2/11/98    <.066       <.044       <.032       <.064      <.132
        8            254156080214601    2/10/98    <.264       <.176       <.128       <.256      <.528
        9            254201080281701    2/11/98    <.264       <.176       <.128       <.256      <.528
        10           254207080202201    2/10/98    E.008       <.044       <.032       <.064      <.132
        11           254938080170902    2/9/98     E.340       <.176       <.128       <.256      <.528
        12           254958080171601    2/12/98    E.089       <.176       <.128       <.256      <.528
        13           255052080245001    3/18/98    <.264       <.176       <.128       <.256      <.528
        14           260053080144701    2/12/98    <.264       <.176       <.128       <.256      <.528
        15           260223080143301    3/16/98    <.264       <.176       <.128       <.256      <.528
        16           260234080211701    1/26/98    <.066       <.044       <.032       <.064      <.132
        17           260322080162103    3/17/98    <.264       <.176       <.128       <.256      <.528
        18           260332080182101    3/17/98    <.264       <.176       <.128       <.256      <.528
        19           260539080155101    3/12/98    <.264       <.176       <.128       <.256      <.528
        20           260738080162701    3/9/98     <.264       <.176       <.128       <.256      <.528
        21           261028080154901    3/12/98    <.264       <.176       <.128       <.256      <.528
        22           261158080151301    3/11/98    <.264       <.176       <.128       <.256      <.528
        23           261404080100601    3/10/98    <.264       <.176       <.128       <.256      <.528
        24           261533080141101    3/11/98    <.264       <.176       <.128       <.256      <.528
        25           261830080073101    3/10/98    <.264       <.176       <.128       <.256      <.528
        26           262156080063601    1/22/98    <.066       <.044       <.032       <.064      <.132
        27           262649080053801    1/21/98    <.066       <.044       <.032       <.064      <.132
        28           262858080083901    1/22/98    <.066       <.044       <.032       <.064      <.132
        29           263638080040301    1/21/98    E.021       E.018       <.032       <.064      <.132
        30           263656080121901    1/20/98    <.066       <.044       <.032       <.064      <.132