TEBU-      BENTA-
                                                   SI-                   EPTC      THIURON      ZON,
                                                 MAZINE,     METO-       WATER      WATER      WATER,
                                                 WATER,     LACHLOR      FLTRD      FLTRD      FLTRD,
                                                  DISS,      WATER       0.7 U      0.7 U     GF 0.7U
   WELL NUMBER     STATION   NUMBER     DATE       REC      DISSOLV     GF, REC    GF, REC      REC
                                                 (UG/L)      (UG/L)     (UG/L)      (UG/L)     (UG/L)
                                                  4035       39415       82668      82670      38711

        1          252505080302501    1/28/98    0.0052      0.042      <.0020      <.0100     <.0140
        2          252624080302901    1/28/98    0.0059      0.021      <.0020      E.0082     <.0140
        3          252716080290601    1/27/98     0.005      <.002      <.0020      E.0053     <.0140
        4          252842080290501    1/27/98    0.0053      E.003      <.0020      E.0074     <.0140
        5          252940080261204    1/29/98    0.0071      0.023      <.0020      <.0100     <.0140
        6          252951080251201    1/29/98    0.0142      <.002      <.0020      <.0100     <.0140
        7          254131080234401    2/11/98    <.0050      <.002      <.0020      E.0100     <.0140
        8          254156080214601    2/10/98    <.0050      E.003      <.0020       0.02      <.0140
        9          254201080281701    2/11/98    <.0050      0.031      <.0020      <.0100     <.0140
       10          254207080202201    2/10/98    <.0050      <.002      <.0020      0.0452     <.0140
       11          254938080170902     2/9/98    <.0050      <.002      <.0020      0.201      <.0140
       12          254958080171601    2/12/98    <.0050      <.002      <.0020      0.0999     <.0140
       13          255052080245001    3/18/98    <.0050      <.002      <.0020      0.0194     <.0140
       14          260053080144701    2/12/98    <.0050      <.002      <.0020      <.0100     <.0140
       15          260223080143301    3/16/98    <.0050      <.002      <.0020      0.0521     <.0140
       16          260234080211701    1/26/98    <.0050      <.002      <.0020      0.458      <.0140
       17          260322080162103    3/17/98    E.0046      <.002      <.0020       0.15      <.0140
       18          260332080182101    3/17/98    <.0050      <.002      <.0020      0.0743     <.0140
       19          260539080155101    3/12/98    <.0050      <.002      <.0020      <.0100     <.0140
       20          260738080162701     3/9/98    E.0041      <.002      <.0020      E.0092     <.0140
       21          261028080154901    3/12/98    <.0050      <.002      <.0020      0.0257     <.0140
       22          261158080151301    3/11/98    <.0050      <.002      <.0020      0.011      <.0140
       23          261404080100601    3/10/98    <.0050      <.002      <.0020      0.0182     <.0140
       24          261533080141101    3/11/98    <.0050      <.002      <.0020      0.0311     <.0140
       25          261830080073101    3/10/98    <.0050      E.003      <.0020      0.0256     <.0140
       26          262156080063601    1/22/98    <.0050      <.002      <.0020       0.69      <.0140
       27          262649080053801    1/21/98    <.0050      0.004      <.0020      0.142      <.0140
       28          262858080083901    1/22/98    <.0050      <.002      E.0025      <.0100     <.0140
       29          263638080040301    1/21/98    <.0050      <.002      <.0020      0.0344     <.0140
       30          263656080121901    1/20/98    <.0050      <.002      0.0322      0.0755     <.0140