BENZENE       DI-
                                                 1,4-DI-     CHLORO-                TRANS-       CIS
                                                 CHLORO-       DI-                  1,3-DI-    1,3-DI-
                                                  WATER      FLUORO-     NAPHTH-    CHLORO-    CHLORO-
                                                 UNFLTRD     METHANE      ALENE     PROPENE    PROPENE
   WELL NUMBER     STATION   NUMBER     DATE       REC        TOTAL       TOTAL      TOTAL      TOTAL
                                                  (UG/L)      (UG/L)     (UG/L)     (UG/L)      (UG/L)
                                                  34571       34668       34696      34699      34704

        1           252505080302501    1/28/98    <.050       <.096       <.250      <.134      <.092
        2           252624080302901    1/28/98    <.050       <.096       <.250      <.134      <.092
        3           252716080290601    1/27/98    <.050       <.096       <.250      <.134      <.092
        4           252842080290501    1/27/98    <.050       <.096       <.250      <.134      <.092
        5           252940080261204    1/29/98    <.050       <.096       <.250      <.134      <.092
        6           252951080251201    1/29/98    <.050       <.096       <.250      <.134      <.092
        7           254131080234401    2/11/98    <.050       <.096       <.250      <.134      <.092
        8           254156080214601    2/10/98    <.200       <.384       <1.00      <.536      <.368
        9           254201080281701    2/11/98    <.200       <.384       <1.00      <.536      <.368
       10           254207080202201    2/10/98    <.050       <.096       <.250      <.134      <.092
       11           254938080170902    2/9/98     E.130       E.780       <1.00      <.536      <.368
       12           254958080171601    2/12/98    E.035       <.384       <1.00      <.536      <.368
       13           255052080245001    3/18/98    <.200       <.384       <1.00      <.536      <.368
       14           260053080144701    2/12/98    E.042       <.384       <1.00      <.536      <.368
       15           260223080143301    3/16/98    E.025       <.384       <1.00      <.536      <.368
       16           260234080211701    1/26/98    <.050       <.096       <.250      <.134      <.092
       17           260322080162103    3/17/98    <.200       <.384       <1.00      <.536      <.368
       18           260332080182101    3/17/98    <.200       <.384       <1.00      <.536      <.368
       19           260539080155101    3/12/98    <.200       <.384       <1.00      <.536      <.368
       20           260738080162701    3/9/98     <.200       <.384       <1.00      <.536      <.368
       21           261028080154901    3/12/98    <.200       <.384       <1.00      <.536      <.368
       22           261158080151301    3/11/98    <.200       <.384       <1.00      <.536      <.368
       23           261404080100601    3/10/98    E.060       <.384       <1.00      <.536      <.368
       24           261533080141101    3/11/98    <.200       <.384       <1.00      <.536      <.368
       25           261830080073101    3/10/98    <.200       E.200       <1.00      <.536      <.368
       26           262156080063601    1/22/98    E.008       <.096       <.250      <.134      <.092
       27           262649080053801    1/21/98    <.050       <.096       <.250      <.134      <.092
       28           262858080083901    1/22/98    E.024       <.096       <.250      <.134      <.092
       29           263638080040301    1/21/98    E.006       <.096       <.250      <.134      <.092
       30           263656080121901    1/20/98    E.003       <.096       <.250      <.134      <.092