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x <br /> to identify the extent of the contamination and floating product .per your request. The <br /> unexpected encountering of floating product at SB2 caused a delay due to the lengthy <br /> time required to decontaminate equipment. A total of 9 borings (SBI through SB7 and <br /> FPB-1 and FPB-2) were completed on-site. The addendum to the. workplan and the <br /> attachment to the addendum to the workplan state that additional borings may need to be <br /> completed. <br /> Additional charges for laboratory analysis have been incurred due to the detection of <br /> methyl tertiary butyl ether(MTBE) in 3 of the grab groundwater samples collected during <br /> the plume delineation and in 2 of the groundwater samples collected during the third <br /> quarter 1996 groundwater sampling on September 25, 1996. Additionally, MTBE may be <br /> detected in some of the soil samples collected during the plume delineation, based on the <br /> results of the groundwater analyses. Thus, confirmation of MTBE by EPA Method 8260 <br /> maybe coriductea`on tlie'soil samples: As stated'it tiie addendum to the workplan and the <br /> attachment to the addendum to the workplan that if MTBE is detected in any samples, <br /> then confirmation by EPA 8260 would be conducted. <br /> If you have any questions, please call us at(209) 579-2221. <br /> Sincerely, <br /> 'Smith Technology Corporation <br /> William Madison <br /> Geologist <br /> Jeanne Homsey, P.E. <br /> CA Registered Civil Engineer No. 47410 <br /> cc: Dr. A.R. Glover IN AGREEMENT: <br /> Mr. nald Rowe <br /> S/E <br /> v <br /> [)l�D Ko' 53X��4:Mb C W)V Cdtv32bL 31b T(L~h a 2 641:"Z 2v&A�' N �nmfi- • <br /> 772\1t-rowe.doc 0 9- UOM& CbW9 '&IR'TI 1r4 5l it I�jl/!� SMTH <br /> �� Sty w 2�f�tN�. 'fa1�fUP.� Gt�M�T ��N � tki[e,�- WI T1�v>✓ <br /> (.on�(iP�1�rf+ON ►fi A.� 2d1�1i1'1��0 0�!t'U,5�6vw�PltiS (�u)V[xL At�DiTIcJN/14�- t3�tA.c�S�. <br />