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i M i J <br /> RBCA Tool Kit for Chemical Releases, Version 1 3a <br /> RBCA SITE ASSESSMENT NT DOMENICO ANALYSIS <br /> Site Name TO Boy Completed By GPS Job ID 335 <br /> Site Location Manteca, CA Date Completed 25-Sep-02 5 of 5 <br /> Consttuent Methyl t-Butyl ether <br /> Source Medium Affected Groundwater <br /> Biodegredation 1st Order <br /> Concentration vs Distance from Source Time(yr) O Off-sitel Off site2 <br /> (for given time) Residential None <br /> Distance(cm) 0 580 1160 1740 2320 2900 1 3480 4060 4640 5220 5800 5800 NA <br /> t=1 0 yri' m 8 6E-3 4 7E-3 1 2E-3 2 1 E-4 3 OE-5 4 1 E-6 5 6E-7 7 7E-8 1 1 E-8 1 6E-9 2 3E-10 2 3E-10 NA <br /> Steady-state c° E 8 6E-3 5 4E-3 3 4E-3 1 9E-3 1 OE-3 5 4E-4 2 9E-4 1 7E-4 9 7E-5 5 9E-5 3 7E-5 3 7E-5 NA <br /> POE Concentration Limit(mg/L) 3 7E-1 NA <br /> 1 OE-2 <br /> 1 0>=-3 <br /> 1OE� — Steady-state <br /> E 1 OE-5 0 yr <br /> 1 OE-6 <br /> e 1 OE-7 - - SIE - Off-sitel Cone Limit <br /> U° 1 OE-8 <br /> 1 OE-9 ♦- Off-site2 Cone Limit <br /> 1 OE-10 <br /> 0 1000 2000 Dist3006 4004 5000 <br /> Concentration vs Time Distance(cm) 2900 <br /> j (for given distance from source) <br /> Time jyr) _0 3 6 9 12 15 18 21 24 27 30 Time to Reach <br /> x=2900 cm n 3 0 OE+O 3 8E-4 5 3E-4 5 4E-4 5 4E-4 5 4E-4 5 4E-4 5 4E 4 5 4E-4 5 4E4 5 4E-4 Cone Limit(yr) <br /> Off-site?(5800 cm) o 0 OE+0 7 4E-6 3 2E-5 3 6E-5 3 7E-5 3 7E-5 3 7E-5 3 7E-5 3 7E-5 3 7E-5 3 7E-5 Off-sitel NA <br /> Off-site2(0 cm) v ` NA NA NA NA NA NA NA NA NA NA NA Off-site2 NA <br /> 6 OEC <br /> 5 OE-4 x=2900 5cm <br /> 8 <br /> :, 4 0>=-4 --E>~^ff-�`el (5ti00 cm) <br /> E 3 OE4 0 Off-site2(0 cm) <br /> 0 <br /> r0 2 OE-4 - - IC - Off-sitel Cone Limit <br /> U <br /> 1 OE-4 - - # - Off-site2 Cone Limit <br /> 0 OE+0 1. <br /> 0 5 10 TimtOyr) 20 25 30 <br />