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MW-17A <br /> - -.10.1139) <br /> WSJ' <br /> I r8��1 <br /> o 411/b <br /> - Ria G'I jt�Str�e)' - <br /> Qt, UW 16A <br /> - <br /> �a,i w,®w,WOR,®r,®„a�Raa�ir®„r®af®,R�„�„der®,afwaa®„®„®YW8®RRwo,.�.Wio ,r®w,®.atlWW aalAooa®.ailA x-Wp ea�R.r .a ® v a. iR �r ®ui.YmaW1A..®K11�aa.4aaswi all W'eL aY®aaa®a.�ll.• <br /> • g <br /> MW-3A <br /> �37 -� (0.087) P <br /> B <br /> MW-13A <br /> YRr�a.�..a®.R®• (0.458) <br /> ,r <br /> (0.037) <br /> A10 Patted Parking Area station House <br /> MW-9A <br /> (0.029) & <br /> NC Paved Road AIC Paved Road <br /> MW-SA MW-6A® MW-14A <br /> (0.070) (8.0[12) (0.005) <br /> sem” MSN-10A <br /> (8.001) <br /> Romp > <br /> 90l SMW-AA <br /> b MW-22A <br /> (D.152) I0.02) o <br /> MW-2A Mw 11Ar,( LEGEND <br /> ewes <br /> FualFBnks MW 12A �e,++�`••�` r WP1 Extraction Well <br /> FaciCommunlity ns f ”' `– (0.013 r�•O 1GW-1 + Infiltration Gallery Well <br /> MW-BA ©� ��,•. <br /> TPCA Po t (0.005) <br /> 19 <br /> morass”` A-Zone Monitoring Well Location <br /> f ExCawall •* <br /> r <br /> B-Zone Monitoring Well Location <br /> L . dr■ <br /> INV-Ice C-Zone Monitoring Well Location <br /> ~MW-1IA GAC Vessels <br /> ��� __(0.665) ss�rrss• <br /> soil r fir• Building <br /> NOTES: <br /> 1. Soo Table 5-4 for Summary Ground Water Analytical Results Road or Paved Area <br /> Sb,k ik,rl �* for Hexavalent Chromium(Cr-6). <br /> sal +® ••�-•— SPTCo Property Boundary <br /> ° 2. Chromium W analyzed by EPA Method 7196. <br /> -- <br /> .°� 3. The geometric mean concentration for each constituent was calculated X Existing Fence � <br /> using alt quarterly sampling analytical resulls. When there was no detection <br /> ° above the method detection limit,the geometric mean of one half of the lowest i - F—i Railroad Tracks <br /> detection limit for all of the quarterly analytical data for that constituent was <br /> ® used in the computation of the geometric mean concentration. __ –___ Limits of Impoundment Excavation <br /> ® 4. Isoconcentration contours are drawn based on actual data collected from <br /> the monitoring wells. Contours between monitoring wells are based on W.S.I.D.Irrigation Canal (Buried) <br /> interpolation between monitoring wells and actual concentrations between <br /> wells may differ from those infered. Infiltration Gallery <br /> ® <br /> Contour Interval <br /> (9910 <br /> Figuie: <br /> Industrial Compliance ISOCONCENTRATION MAP OF 5_8 <br /> ASubsidtajofsPGEOMETRIC MEAN CONCENTRATION @ <br /> a Environrata3SyMms,tnC HEXAVALENT CHROMIUM IN A <br /> �p ne -ZONE GROUND WATER <br /> l W-21A;l ApproWnatoScaieinFool PM tom: pale: ++�+SOUTHERN PACIFIC TRANSPORTATION COMPANY <br /> 0 1£0 <br /> j US100254 03/22194 TRACY YARD saaim: <br /> TRACY, CALIFORNIA <br /> Drawn Patti Decker ' Mike Purcell asshown <br /> Trey-2WRCOR941F.5.8 9106 <br />