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Greer Property <br /> 1 5634 Steinegul Road Escalon, California January 2, 2001 <br /> Quarterly Groundwater Sampling Report, Fourth Quarter, 2000 Page 2 <br /> Mstoncal gradient maps are included in Appendix C of this report <br /> Summ o Anal tical Hn&n s <br /> �' .f y g <br /> Contamination was identified this quarter in MW-1, MW-2, MVV-3, MW-4, MW-5, <br /> MW-6 and MW-9 <br /> Benzene Toluene Total Ethyl MTBE Tertiary Gasoline <br /> Date Sample Cpg ) SNS ) Xylene Benzene Butanol <br /> P m <br /> /1 � I O) I �) (491L) <br /> (u 2 I � <br /> 11-28-00 MW-1 4 ND ND 4.0 -61 <br /> MW-2 400 26 ND 31 <br /> �M(�W�-3f - #+4 ND NDN7D� �N7D� ND ND <br /> NI YY-4 '"` "` 4J ND 2.1 ' ND ND ND <br /> MW-5 `' 3 fir. 6.2 ND ND *15, �. <br /> r MW-6 ND ND 2.5' 016 2 +, 0,4 <br />■ MW-9 ND ND ND ND ND ND ND <br /> MW-9 S. ND ND ND ND ND f1 <br /> I MW-10 ND ND ND ND ND ND ND <br /> Domestic ND ND ND ND ND ND ND <br /> Well <br />' "ND" =None Detected <br /> IMW-8, MW-10 and the domestic well are at non detectable limits for all analytes <br /> tested This is the first quarterly groundwater sampling event at this site The <br /> monitoring wells will be measured, purged and sampled again next quarter, and a new <br /> gradient calculated <br /> I <br /> Recommendations <br />' WHF recommends that quarterly momtonng be continued for a period of one year (4 <br /> quarters) to evaluate, investigate, and monitor the groundwater conditions at this site <br /> Uns will supply data to determine the best course of action to mitigate the groundwater <br /> contamination plume <br /> I <br />