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<br /> cyjAm7 my GnDuNDWAT�A 550in4n
<br /> Shy 5o�n EI Dor6do,5[oGkion.
<br /> sampling, and installation of
<br /> i r 1981 Aegis conducted soil borings, lin
<br /> On July 2, and 3. 2 and MW-3 (Figure 2). Results of soil Phase borings,
<br /> Subsurface
<br /> r monitoring wells MW-1, MW' Aegis to Exxon in a
<br /> and well installation were reported by g 1991.
<br /> investigation Results Report" dated September 13,
<br /> A,o GROUNDWATER MONITORING
<br /> = 9 4.1 Groundwater the to
<br /> Or 17, 1991, Aegis personnel collected measurements the a ast 3 months, since
<br /> W-2, and MW-3• Over the pThe drop
<br /> l On <.�).
<br /> ,•, groandwater in wells MW-1, M On the basis of the October 17, 1991,
<br /> July 11, 1991, groundwater feeds able fallen have ). in the three wells (Figure radient
<br /> ranged from 1.26 to 1.23 Cr
<br /> is groundwater is estimated to lbw rotiometthe oris surface map of tverahe gshallow
<br /> r� measuremen , g ft. Figure 3 is a pate
<br /> of approximagtely 0.0007 ft/ 1991.
<br /> water-bearing zone cn October 17, All groundwater elevation
<br /> is are summarized In Table 1measured to the
<br /> Previous groundwater levee from the referenced wellhead elevations,prating procedures
<br /> measurements were mad Is standardp
<br /> nearest 0.01 foot, and conducted according to the Aegis
<br /> �— (SOP) included as Appendix A.
<br /> q 2 �fVater Sam lin and Anal sis
<br /> groundwater samples from the three
<br /> 1991, Aegis personnel collected g to the Aegis SOP included in
<br /> On October 17, les were collected according
<br /> wells at the site. The
<br /> samples to Pace Laboratories, incorporated of
<br /> The samples were analyzed for
<br /> .� Appendix A, and deliveredtate-ce�ifiedhanafytical laboratory. BTEX by EPA
<br /> Novato, California, a s gasoline, by EPA Metrial 8015 b)
<br /> entrations of: a) TPH, as 9 lens dichloride by Method 5fl30(GC,FIDS and
<br /> c ethylene results n e re
<br /> co and Y ical ,
<br /> • e l
<br /> Id nd
<br /> rm a
<br /> ,. Method 602;c} ethylene dib o EPA Method 7421• The Yt
<br /> � and d) total lead by forms are included
<br /> I lam; Method 8010; The analytical reports and chain-ot-custody reported in Table 2 are
<br /> summarized in Table 2. gasoline, and benzene rep
<br /> A in Appendix B.
<br /> Concentrations of TPH, as g
<br /> also shown on Figure 4.
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