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RSCA Tool Kit for Chemical Releases,Version 1 3a <br /> RBCA SITE ASSESSMENT <br /> TIER 2 TRANSIENT DOMENICO ANAL.YS[S <br /> Site Name Tuff Soy Completed By GPS Job ID 335 <br /> Site Location Manteca, CA Date Completed 25-Sep-02 5 of 5 <br /> Constiuent Methyl t-Butyl ether <br /> Source Medium Affected Groundwater <br /> Biodegredation 1st Order <br /> Concentration vs Distance from Source Time(yr) 1 0 Off-sitel off-site2 <br /> (for given time) Residential None <br /> Distance(cm) 0 580 1160 1740 2320 2900 3480 4060 4640 5220 5800 2450 NA <br /> t=1 0 yr 8 6E-3 4 7E-3 1 2E-3 2 1 E4 30E-5 41E-6 5 6E-7 7 7E-8 1 1 E-8 1 6E-9 2 3E-10 1 9E-5 NA <br /> Steady-state U B 6E-3 5 4E-3 3 4E 3 1 9E 3 1 OE 3 5 4i*4 2 91:4 1 7E� 9 7E-5 5 9E-5 3 7E-5 8 7E-4 NA <br /> POE Concentration Limit(mg1L) 3 7E-1 NA <br /> 1 OE-2 <br /> 1 OE-3 <br /> 1 OE-4 Steady-slate <br /> 1 OE-5 —1Nr-11=1 0 yr <br /> 1 OE-6 ; <br /> c 1 OE-7 - - 31t- - Off-sdel Conc Limit <br /> U 1 OE-8 - - + - Off-site2 Conc Limit <br /> 1 OE-9 <br /> 1 OE-10 <br /> 0 1000 2000 Dist3809 4000 5000 <br /> Concentration vs Time Distance(cm) 2450 <br /> (for given distance from source) <br /> Time(yr)I 0 3 6 9 12 15 18 21 24 27 30 Time to Reach <br /> x=2450 cm 0 OE+0 7 1E-4 8 7E4 8 7E4 8 7E-4 8 7E-4 8 7E-4 8 7E-4 8 7E-4 8 7E4 8 7E4 Conc Limit(yr) <br /> Ott-sitel(2450 cm) oE 0 OE+0 7 1E-4 8 7E-4 8 7E-4 8 7E-4 8 7E-4 8 7E-4 8 7E-4 8 7E-4 8 7E-4 8 7E-4 Off-sitel NA <br /> H <br /> Osde2(0 cm) U NA NA NA NA NA NA NA NA NA NA NA Off-site2 NA <br /> 9 OE-4 <br /> 8 OE-4 <br /> r,7 OE-4 -- x=2450 cm <br /> a,6 OE-4 D Off--sitel (2450 cm) <br /> 5 OE-4 <br /> o 4 0E 4 O Off-sde2(0 cm) <br /> o 3 OE-4 - - # - Off-sitel Conc Limit <br /> 2 OE-4 + - Off-site2 Conc Limit <br /> 1 OEC <br /> 0 O E+0 <br /> 0 5 10 Timb5(yr) 20 25 30 <br />