2,6-DI-     TRI-     ETHAL-
                                                   METRI-     ETHYL     FLUR-     FLUR-     PHORATE
                                                    BUZIN    ANILINE     ALIN      ALIN      WATER
                                                   SENCOR    WAT FLT   WAT FLT   WAT FLT     FLTRD
                                                    WATER     0.7 U     0.7 U     0.7 U      0.7 U
   WELL NUMBER      STATION   NUMBER      DATE     DISSOLV   GF, REC   GF, REC   GF, REC    GF, REC
                                                   (UG/L)     (UG/L)    (UG/L)    (UG/L)     (UG/L)
                                                    82863     82660     82661     82663      82664

        1            252505080302501    1/28/98     0.105     <.0030    <.0020    <.0040     <.0020
        2            252624080302901    1/28/98     0.005     <.0030    <.0020    <.0040     <.0020
        3            252716080290601    1/27/98     0.017     <.0030    <.0020    <.0040     <.0020
        4            252842080290501    1/27/98     <.004     <.0030    <.0020    <.0040     <.0020
        5            252940080261204    1/29/98     <.004     <.0030    <.0020    <.0040     <.0020
        6            252951080251201    1/29/98     <.004     <.0030    <.0020    <.0040     <.0020
        7            254131080234401    2/11/98     <.004     <.0030    <.0020    <.0040     <.0020
        8            254156080214601    2/10/98     <.004     <.0030    <.0020    <.0040     <.0020
        9            254201080281701    2/11/98     <.004     <.0030    <.0020    <.0040     <.0020
        10           254207080202201    2/10/98     <.004     <.0030    <.0020    <.0040     <.0020
        11           254938080170902     2/9/98     <.004     <.0030    <.0020    <.0040     <.0020
        12           254958080171601    2/12/98     <.004     <.0030    <.0020    <.0040     <.0020
        13           255052080245001    3/18/98     <.004     <.0030    <.0020    <.0040     <.0020
        14           260053080144701    2/12/98     <.004     <.0030    <.0020    <.0040     <.0020
        15           260223080143301    3/16/98     <.004     <.0030    <.0020    <.0040     <.0020
        16           260234080211701    1/26/98     <.004     <.0030    <.0020    <.0040     <.0020
        17           260322080162103    3/17/98     <.004     <.0030    <.0020    <.0040     <.0020
        18           260332080182101    3/17/98     <.004     <.0030    <.0020    <.0040     <.0020
        19           260539080155101    3/12/98     <.004     <.0030    <.0020    <.0040     <.0020
        20           260738080162701     3/9/98     <.004     E.0013    <.0020    <.0040     <.0020
        21           261028080154901    3/12/98     <.004     <.0030    <.0020    <.0040     <.0020
        22           261158080151301    3/11/98     <.004     <.0030    <.0020    <.0040     <.0020
        23           261404080100601    3/10/98     <.004     <.0030    <.0020    <.0040     <.0020
        24           261533080141101    3/11/98     <.004     <.0030    <.0020    <.0040     <.0020
        25           261830080073101    3/10/98     <.004     <.0030    <.0020    <.0040     <.0020
        26           262156080063601    1/22/98     <.004     <.0030    <.0020    <.0040     <.0020
        27           262649080053801    1/21/98     <.004     E.0011    <.0020    <.0040     <.0020
        28           262858080083901    1/22/98     <.004     E.0011    <.0020    <.0040     <.0020
        29           263638080040301    1/21/98     <.004     <.0030    <.0020    <.0040     <.0020
        30           263656080121901    1/20/98     <.004     0.0088    <.0020    <.0040     <.0020