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! • �J <br /> RBCA Tool Kit for Chemical Releases, Version 1 3a <br /> RBCA SITE ASSESSMENT <br /> TIER 2 TRANSIENT DOMENlCQ ANALYSIS <br /> Site Name Tuff Boy Completed By GPS Job lD 335 <br /> Site Location Manteca, CA Date Completed 25-Sep-02 1 of 5 <br /> Conshuent Benzene <br /> Source Medium Affected Groundwater <br /> Biodegredation 1 st Order <br /> Concentration vs Distance from Source Time(yr) 1 0 Off-sdel off-site2 <br /> (for given time) Residential None <br /> Distance(cm) 0 580 1160 1740 2320 2900 3480 1 4060 4640 5220 5800 5800 NA <br /> t=1 0 yr 1 7E-3 9 2E-4 1 6E-4 1 9E-5 1 8E-6 1 7E-7 1 6E-8 1 1 5E-9 1 5E-10 1 5E-11 1 5E-12 1 5E 12 NA <br /> Steady-state 1 7E-3 1 3E-3 94E4 60E-4 36E-4 2 1E-4 1 3E-4 8 2E-5 5 3E-5 3 5E-5 2 4E-5 24E 5 NA <br /> POE Concentration Limit(mglL) 2 9E-3 NA <br /> 1 OE-2 <br /> jig <br /> 1 0E-4 ♦Steady-state <br /> } <br /> 1 OE-6 0 pia � --t=I 0 yr <br /> c <br /> 1 OE-8 � � -- - Off-sdel Cone Limit <br /> 0 <br /> U 1 OE-10 +- Off-site2 Cone Limit <br /> 1 OE-12 <br /> 0 1000 2000 Dist8809 4000 5000 <br /> Concentration vs Time Distance cm 2900 <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=2900 cm 0 OE+0 8 8E-5 2 OE-4 21E-4 21E-4 2 1E-4 2 1E4 2 IE-4 2 1E-4 2 IE-4 2 1E4 Cone Limit(yr) <br /> Off-sites(5800 cm) o E 0 OE+O 9 9E-7 1 3E-5 21 E-5 2 3E-5 2 4E-5 2 4E-5 2 4E-5 2 4E-5 2 4E-5 2 4E-5 Off-sitel NA <br /> Off site2(0 cm) U ` NA NA NA NA NA NA NA NA NA NA NA Off-site2 NA <br /> 3 OE-4 <br /> 2 5E4 --4&—x=2900 cm <br /> m 2 OE4 —Fh--Off-i'e' X5800 cm) <br /> E 1 5E4 —0 Off-site2(0 cm) <br /> v <br /> 0 <br /> 1 OE-4 Off-sitel Conc Limit <br /> U <br /> 5 OE-5 - - -1- - Off-site2 Cone Limit <br /> 0 0E+0 <br /> 0 5 10 Timt%yr) 20 25 30 <br />