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TABLE 3 <br /> ANALYTICAL RESULTS OF WATER SAMPLES <br /> Elkhorn Country Club <br /> 1050 Elkhorn Drive, Stockton, California <br /> (ug/L) <br /> TPH as Benzene Toluene Ethyl- Xylene <br /> Sample ID Gasoline benzene <br /> MW-1/9-2-94 280 ND ND ND ND <br /> MW-1/12-9-94 ND ND ND ND ND <br /> MW-219-2-94 9,500 500 1,600 330 1,500 <br /> MW-2112-9-94 860 120 65 22 57 <br /> MW-3/9-2-94 1,200 58 230 36 170 <br /> MW-3112-9-94 780 40 180 23 140 <br /> WL. = parts per billion(ppb) <br /> ND = None Delected <br /> Based upon analytical results of soil samples, it is likely that MW-31s near the edge of the <br /> impacted soil plume. <br /> When assessment of the groundwater has been completed, remedial options for the <br /> impacted soil should be considered. <br /> 5.2 Hydrocarbon Impacted Groundwater <br /> Although groundwater flow direction has rotated from southeast to northeast, MW-2 <br /> remains downgradient of the former UST excavation. Between September and December <br /> 1994, petroleum hydrocarbon concentration in MW-2 decreased from 9,500 ppb to 860 ppb; <br /> hydrocarbons decreased in MW-3 from 1,200 ppb to 780 ppb. <br /> The Iateral extent of the impacted groundwater has not been defined at the site. Therefore, <br /> we recommend the installation of two additional monitoring wells. One well should be <br /> installed north of MW-2; a second well should be installed east of MW-2. A Interim Work <br /> Plan to the installation of the additional monitoring wells is included in Appendix C. <br /> 6.0 LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily <br /> exercised by environmental consultants practicing in this or similar localities. The findings <br /> were based upon analytical results provided by an independent laboratory. Evaluations of <br /> Gmbyal AA1 5—im,Inc. 8 <br /> Fakhem OMNW2-9+ O <br /> -?,_ '.,: -.,. i'.• :I _ it- <br /> .f.l.l .. :-... ..,.' [I_ e.E. I'T:.L..:.`.f.it r,r.•_i 51, 'J_',: iL.. ,r. . - . , .I '•' 1 i !.,.111.... :..'.,1 r r .. �L ,. .�... 1 ....r.. ;li�_N:,.v.t <br />