      Appendix A.1: Surface Area Values from the Exposure Factors Handbook - 1997
                                          
       Table A1.  Adult Surface Area Values used in Exposure Calculations[1].
                                   Body Part
                 Mean Surface Area by Body Part for Men (m[2])
                Mean Surface Area by Body Part for Women (m[2])
Head
                                     0.118
                                     0.11
Trunk
                                     0.569
                                     0.542
Upper Extremities
                                     0.319
                                     0.276
	Arms
                                     0.228
                                     0.21
      Upper Arms
                                     0.143
                                     0.116
      Forearms
                                     0.114
                                   0.0931[2]
      Hands
                                     0.084
                                   0.0746[3]
Lower Extremities
                                     0.636
                                     0.626
      Legs
                                     0.505
                                     0.488
      Thighs
                                     0.198
                                     0.258
      Lower Legs
                                     0.207
                                     0.194
      Feet
                                     0.112
                                    0.0975
Total
                                     1.94
                                     1.69
      Surface Area Values taken from the Exposure Factors Handbook 1997 Final Report.  Available At: http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=12464#Download. 
      Calculated from the Male percentages of total arm surface area.
      Calculated from the Male percentages of total arm surface area.
      
    Table A2.  Youth Surface Area Values used in Exposure Calculations[1].
                    Total Body SA for Male Children (m[2])
                   Total Body SA for Female Children (m[2])
                                      Age
                                50th Percentile
                                      Age
                                50th Percentile
                                       6
                                     0.866
                                       6
                                     0.843
                                       7
                                     0.936
                                       7
                                     0.917
                                       8
                                       1
                                       8
                                       1
                                       9
                                     1.07
                                       9
                                     1.06
                                      10
                                     1.18
                                      10
                                     1.17
                                      11
                                     1.23
                                      11
                                      1.3
                                      12
                                     1.34
                                      12
                                      1.4
                                      13
                                     1.47
                                      13
                                     1.48
                                      14
                                     1.61
                                      14
                                     1.55
                                      15
                                      1.7
                                      15
                                     1.57
                                      16
                                     1.76
                                      16
                                      1.6
                                      17
                                      1.8
                                      17
                                     1.63
 Surface Area Values taken from the Exposure Factors Handbook 1997 Final Report.  Available At: http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=12464#Download

      
Table A3.  Percentage of Total Body Surface Area by Body Part for Children[1]. 
                                     Ages
                                     Head
                                     Trunk
                                  Whole Arms
                                 Upper Arms[2]
                                   Forearms
                                     Hands
                                     Legs
                                     Feet
                                  6 to < 9
                                     0.131
                                     0.351
                                     0.131
                                   0.082137
                                    0.0655
                                    0.0471
                                     0.271
                                     0.069
                                 9 to < 12
                                     0.12
                                     0.342
                                     0.123
                                   0.077121
                                    0.0615
                                     0.053
                                     0.287
                                    0.0758
                                      12
                                    0.0874
                                     0.347
                                     0.137
                                   0.085899
                                    0.0685
                                    0.0539
                                     0.305
                                    0.0703
                                 13 to <16
                                    0.0997
                                     0.327
                                     0.121
                                   0.075867
                                    0.0605
                                    0.0511
                                     0.32
                                    0.0802
                                      16
                                    0.0796
                                     0.327
                                     0.131
                                   0.082137
                                    0.0655
                                    0.0568
                                     0.336
                                    0.0693
                                      17
                                    0.0758
                                     0.317
                                     0.175
                                   0.109725
                                    0.0875
                                    0.0513
                                     0.308
                                    0.0728
 Surface Area Values taken from the Exposure Factors Handbook 1997 Final Report.  Available At: http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=12464#Download
 Upper Arms and forearms for children were adjusted by using percentage of total arm of adults and extrapolating that to a child's arm.  Upper arms represent ~56% of the whole arm and the forearms represent ~44% of the whole arm.  
      

