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RBCA Tool Kit for Chemical Releases, Version 1 3a `- <br /> RBCA SITE ASSESSMENTTIER 2 iiiiii 111111qoiilq�111 11111 ill 1111111 <br /> TRANSIENT�OAdENICO ANALYSIS <br /> Site Name TO Boy Completed By GPS Job ID 335 <br /> Site Location Manteca, CA Date Completed 25-Sep-02 3 of 5 <br /> Constiuent Ethylbenzene <br /> Source Medium Affected Groundwater <br /> Siodegredation 1st Order <br /> Concentration vs Distance from Source Time(yr) 1 0 off-sitel Off-sitQ <br /> (forgiven time) Residential None <br /> Distance(cm) 0 580 1160 1740 2320 2900 3480 4060 4640 5220 5800 2450 NA <br /> t=10 yr 1 3E-2 5 7E-4 65E-6 59E-8 4 9E-104 OE-12 34E-14 29E-16 26E-18 24E-20 2 2E-22 1 7E-10 NA <br /> Steady-state U € 1 3E-2 2 5E-3 6 2E-4 1 6E-4 4 5E-5 1 4E-5 4 4E-6 1 5E-6 5 8E-7 2 3E-7 9 7E-8 3 4E-5 NA <br /> POE Concentration Limit(mg1L) 3 7E+0 NA <br /> I OE-2 i ' <br /> 1 OEC --�—Steady-state <br /> E 1017-6 —�t=1 0 yr <br /> 0 1 OE-8 - '� - Off-sitel Conc Limit <br /> U <br /> 1 OE-10 - - + - Off-site2 Conc Limit <br /> i <br /> 1 0E-12 <br /> 0 1000 2000 Dista90® 4000 5000 <br /> Concentration vs Time Distance(cm) za5o <br /> (for given distance from source) <br /> Time(yr) 0 3 6 9 12 15 18 21 24 27 30 Time to Reach <br /> x=2450 cm 0 OE+0 9 5E-6 3 3E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 Conc Limit(yr) <br /> MOO(2450 cm) o E 0 0E+0 9 5E-6 3 3E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 3 4E-5 Off-sltel NA <br /> OtT--sde2(0 cm) U NA NA NA NA NA NA NA NA NA NA NA Off-site2 NA <br /> 4 OE-5 <br /> 3 5E-5 <br /> 3 OE-5 x=2450 cm <br /> E 2 5E-5 —0 Off-sitel (2450 cm) <br /> "2 OE-5 0 Off-site2(0 cm) <br /> c1 5E-5 <br /> o - - �- - Off-site1 Conc Limit <br /> U 1 OE-5 � <br /> 5 OE-5 + - Off-site2 Conc Limit <br /> 0 OE+0 <br /> 0 5 10 Timtoyr) 20 25 30 <br /> I <br />