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' confined area due to the reduction in the transmission area. This <br /> additional velocity will make it harder for contamination to move <br />' up gradient. <br /> 5. The EHD has told us that a tank at the ARCO station west of <br />' well BM-9 was replaced a year or so ago and no contamination was <br /> found in the tank pit. The pavement at the ARCO station does not <br /> show new pavement or pavement patches, which would indicate <br /> where the tank was removed. <br />' CONCLUSIONS <br />' Based upon the information described above we find that there is <br /> a source of contamination west of well BM--9. <br /> We believe we have completed definition of this sites groundwater <br />' plume caused by the source at this site. <br /> Yours truly, <br /> 6 96 <br /> John Cussen <br /> REA 1979` <br /> ��,,�►ga�ioesi <br /> /Z ;ZC jet_ r� oo�i►iif�y <br /> Richard Merriam W �Q�p�G G 01 <br /> ? a s <br /> CEG 850 `� t�0�t�1gM0-1 <br /> 1 <br /> Incl. 5 Figures �`' `o��y� ti 7� � <br /> 4 Tables <br />' cc: 10 copies to the EHD <br /> 1 copy to Mr. Roger Liston, Darpetro, Inc. <br /> Page 4 <br />