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Fig. 6. Particle tracking simulation for traced water in the vicinity of a possible high-infiltration zone associated with the Guaje Mountain Fault. (a) Base case representing no permeability reduction at the interface, (b) interface permeability reduction factor of 0.01, (c) interface permeability reduction factor of 0.003, (d) interface permeability reduction factor of 0.001. Color scale shows relative contaminant concentration ranging from 0.0 to 
0.1 times initial concentration.
