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� 1 r 22 November 1999 S AGE-NC Project No 95-0135 Page 4,of 4 ' The fuel additives TAME and MTBE were detected on the site MTBE was detected above the State of California action level r 5.0• `RECOMMENDATIONS 1 Based on the results of this investigation, AGE recommends the following � 1 r • A regular quarterly monitoring program should be established The next monitoring event ' should conducted in December 1999 • Additional soil boring should be installed to determine the lateral extent of hydrocarbon- ' ' impacted soil north of the former UST area and in the area of well MW-1 o Additinal ground water monitoring wells should be installed to dctermine the lateral extent ; • r ' of hydrocarbon-impacted ground water, south of the former UST aiea and well MW-1 Additional ground water investigation is required northeast of the well'MViW-2 • Once the soil and ground water impact has been defined, a work plan should be prepared for feasibility testing to evaluate various remedial alternatives at the site s 60. LIMITATIONS IOur professional services were performed using that degree of care and skill ordinarily exercised by environmental consultants practicing in' this or similar localities The findings were based on analytical results provided by an independent laboratory Evaluations of the geol ogic/hydro geologic ' conditions at the site for,the purpose of this investigation are made from a limited number of 1 available data points (i a monitoring wells, ground water and soil samples) and subsurface conditionslmay vary away from these data points No other warranty, expressed or implied, is made T v as to the professional recommendations contained in this report , S I1 I M r r ♦I I r I e t r I � J 1 , 1 r Advanced,GeoEmfronmental,Inc I