... 3,596,102 69 580 ,43 5 67,920 86,127 55, 942 Population ZIP codes (areal) 29 ,46 6 248 ,709,873 0 112,167 844 1 12,316 2785Census tract 61,255 248 ,709,873 0 71,872 40 60 23 94 3755County 3 141 248 ,709,873 ... (all) 42 ,682 3,568,785 0 98 ,48 4 84 676 17ZIP codes (areal) 29 ,48 3 3,268,020 0.011 18,555 111 380 40 .5Census tract 61,386 3,779,518 0 61,586 62 593 2.2County 3 141 3,560,536 1.8 156, 741 11 34 3777 ... Chapter 4, environmental modeling and monitoring have pro-vided us with some data, methods, and models for delineating plume trajectory ofpollutants and thus the impact boundary of single environmental...