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gasoline oxygenate,,/additive,, were detected at or above the laboratory reported detection limits in an} of the.
<br /> ,,urfaLe eater ,,ample,,
<br /> On March 26 1999 C ondor c,ondui,ted first quarter 1999 groundwater and surface water monitoring at Herman
<br /> & Helen ,, Marina Laboratory analytical results of the groundwater samples collected during the first quarter,
<br /> 1999 nnonrtoring event were generally consistent with historical quarterly groundwater analytical data
<br /> Ground�Nater elevation mea,,urements collected at the site on March 26 1999, indicated that the average depth to
<br /> ,,rou,ldwatc,r was approximately 5 5 tee, below the monitor well and Surface water station measuring points rhes
<br />' average, depth to water is 0 1 feet greater than the average depth to water measured on Decernber 30, 1998
<br /> Groundwater elevation contours for March 26, 1999, indicated that the groundwater gradient at the ,,Ite is
<br /> generally Lonsi,,tent N%ith the historical groundwatc,r gradient
<br /> Laboratory analytILal result,, of the ,urtace water samples collected during the first quarter 1999, monitoring
<br /> event xxere generally con,,istcnt with historical surface water analytical data for BTEX and rPH-(J MTBE,
<br />' however, -,A a,, detected for the ffr%t time in the ,,ample collected from IDCW (2 2 Rg/1) MTBE was detected in
<br /> samples DDN and DDS at Significantly higher concentrations during the first quarter 1999, monitoring event
<br /> (980 and 3,500 pg/l reSpcLU'Vely)than in prior monitoring events
<br />' As previously described, Mr Ronald Rowe of the. P1tS/EHD requested that nine soil borings be installed to
<br /> further evaluate. the eastern extent of groundwater contamination at the site l he installation and sampling of the
<br /> soil borings v,, pending receipt of site access authori/ation from off-,,rte property owners
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