Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 98 August 1997 Table 15 82. Statistics for 24 Hour Cumulative Number of Minutes Spent Washing, etc.

Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 6029 23.9338 25.5661 0.3293 1 705 5 10 20 30 45 60 75 90 Gender Male 2785 23.4154 28.8168 0.5461 1 705 5 10 15 30 45 55 65 90 Gender Female 3242 24.3816 22.4026 0.3935 1 555 5 10 20 30 45 60 80 90 Gender Refused 2 20 14.1421 10 10 30 10 10 20 30 30 30 30 30 Age ( years) * 110 25.9182 30.4752 2.9057 3 300 5 10 20 30 41.5 60 60 80 Age ( years) 1 4 318 29.2673 16.5524 0.9282 5 125 10 15 30 30 50 60 75 85 Age ( years) 5 11 407 26.5184 35.9626 1.7826 2 690 7 15 20 30 45 60 60 75 Age ( years) 12 17 411 22.4088 14.6309 0.7217 1 90 5 10 18 30 42 50 60 60 Age ( years) 18 64 4154 22.7939 21.6279 0.3356 1 555 5 10 15 30 45 60 75 90 Age ( years) > 64 629 27.7424 43.1415 1.7202 1 705 5 12 20 30 45 65 90 120 Race White 4794 23.1558 26.1288 0.3774 1 705 5 10 15 30 45 60 70 90 Race Black 664 28.7816 24.2016 0.9392 3 270 5 15 20 35 60 65 90 105 Race Asian 110 24.4727 17.5493 1.6733 5 90 5 15 20 30 47.5 60 85 90 Race Some Others 119 28.6471 27.4768 2.5188 3 240 8 15 25 30 50 60 100 150 Race Hispanic 269 23.8364 19.8318 1.2092 1 210 5 10 20 30 45 60 75 90 Race Refused 73 22.7945 20.46 2.3947 3 105 5 10 15 30 60 75 90 105 Hispanic No 5476 23.8088 25.0872 0.339 1 705 5 10 20 30 45 60 75 90 Hispanic Yes 465 25.7312 31.6942 1.4698 1 570 5 15 20 30 45 60 75 90 Hispanic DK 30 23.8 15.0319 2.7444 5 60 10 15 17.5 30 50 60 60 60 Hispanic Refused 58 21.3966 18.5708 2.4385 5 105 5 10 15 25 30 60 80 105 Employment * 1116 25.9758 25.169 0.7534 1 690 7 15 20 30 45 60 60 75 Employment Full Time 2975 22.0733 21.4639 0.3935 1 555 5 10 15 30 45 60 65 85 Employment Part Time 518 22.3996 17.1137 0.7519 1 135 5 10 15 30 45 60 70 90 Employment Not Employed 1378 26.9354 34.8572 0.939 1 705 5 10 20 30 50 60 90 120 Employment Refused 42 21.9048 15.8865 2.4513 5 90 5 10 15 30 30 45 90 90 Education * 1245 25.3888 24.2988 0.6887 1 690 6 15 20 30 45 60 60 80 Education < High School 440 30.6 46.38 2.2111 1 570 5 15 20 30 50 60 90 240 Education High School Graduate 1634 23.7699 20.0081 0.495 1 270 5 10 20 30 45 60 75 90 Education < College 1228 22.8575 19.6959 0.5621 1 255 5 10 15 30 45 60 75 90 Education College Graduate 844 22.5936 32.3617 1.1139 1 705 5 10 15 30 40 60 75 110 Education Post Graduate 638 20.7618 18.4597 0.7308 2 240 5 10 15 30 45 60 65 85 Census Region Northeast 1356 23.3274 21.7583 0.5909 1 360 5 10 15 30 45 60 75 90 Census Region Midwest 1303 22.9294 27.432 0.76 1 570 5 10 15 30 45 60 70 85 Census Region South 2136 25.2116 21.6627 0.4687 1 300 5 15 20 30 45 60 85 105 Census Region West 1234 23.4489 32.6116 0.9284 1 705 5 10 15 30 45 60 65 85 Day Of Week Weekday 4184 22.9441 25.7284 0.3978 1 705 5 10 15 30 45 60 65 90 Day Of Week Weekend 1845 26.1783 25.0567 0.5833 1 555 5 15 20 30 50 60 90 100 Season Winter 1688 24.6226 20.295 0.494 1 300 5 10 20 30 45 60 75 90 Season Spring 1584 26.3295 38.468 0.9665 1 705 5 13 20 30 45 60 90 125 Season Summer 1636 21.8264 15.5411 0.3842 1 150 5 10 15 30 40 55 60 75 Season Fall 1121 22.587 20.8871 0.6238 1 340 5 10 15 30 45 60 75 90 Asthma No 5559 23.9538 26.1095 0.3502 1 705 5 10 20 30 45 60 75 90 Asthma Yes 437 24.2288 18.3575 0.8782 1 145 5 15 20 30 45 60 90 95 Asthma DK 33 16.6667 8.7202 1.518 5 30 5 10 15 25 30 30 30 30 Angina No 5866 23.9529 25.8029 0.3369 1 705 5 10 20 30 45 60 75 90 Angina Yes 125 25.176 15.6613 1.4008 3 100 6 15 25 30 45 60 60 75 Angina DK 38 16.8947 8.5481 1.3867 5 35 5 10 15 25 30 30 35 35 Bronchitis/ Emphysema No 5749 23.8629 25.8064 0.3404 1 705 5 10 20 30 45 60 75 90 Bronchitis/ Emphysema Yes 249 26.49 20.7475 1.3148 1 150 5 15 20 30 60 60 95 105 Bronchitis/ Emphysema DK 31 16.5484 8.0616 1.4479 5 30 5 10 15 25 30 30 30 30 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Exposure Factors Handbook Page August 1997 15 99 Table 15 83. Statistics for 24 Hour Cumulative Number of Minutes Spent Sleeping/ Napping Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 9362 526.287 134.435 1.3894 30 1430 345 445 510 600 690 760 850 925 Gender Male 4283 523.333 135.183 2.0656 30 1295 330 435 510 600 690 765 860 925 Gender Female 5075 528.685 133.743 1.8774 30 1430 350 450 510 600 690 750 840 925 Gender Refused 4 645 123.693 61.8466 540 780 540 540 630 750 780 780 780 780 Age ( years) * 185 502.281 125.424 9.2214 195 908 330 420 480 555 655 745 865 900 Age ( years) 1 4 499 732.363 124.328 5.5657 270 1320 540 655 720 810 900 930 1005 1110 Age ( years) 5 11 702 625.058 100.656 3.799 120 1110 480 570 630 680 725 780 840 875 Age ( years) 12 17 588 563.719 110.83 4.5706 150 1015 395 484 550 630 705 750 810 900 Age ( years) 18 64 6041 496.93 123.019 1.5828 30 1420 330 420 480 555 630 705 780 868 Age ( years) > 64 1347 517.084 117.477 3.2009 30 1430 345 450 510 570 660 720 780 860 Race White 7576 523.598 129.545 1.4883 30 1430 350 445 510 600 690 750 840 900 Race Black 940 541.303 162.726 5.3076 60 1415 315 424 530 630 737.5 822.5 940 1020 Race Asian 156 537.09 118.072 9.4533 300 920 345 467.5 540 600 690 735 840 870 Race Some Others 181 528.823 142.25 10.5734 60 905 300 420 525 630 720 769 810 842 Race Hispanic 383 537.966 148.886 7.6077 60 1125 315 450 540 630 720 765 870 930 Race Refused 126 523.421 143.695 12.8014 180 1140 330 420 510 600 720 780 870 930 Hispanic No 8514 525.205 133.218 1.4438 30 1430 345 445 510 600 690 750 855 925 Hispanic Yes 700 540.053 147.143 5.5615 60 1125 320 450 540 630 720 777.5 842.5 915 Hispanic DK 45 527.467 139.269 20.7609 195 842 345 420 515 659 690 710 842 842 Hispanic Refused 103 521.592 138.874 13.6837 240 930 330 420 510 590 720 780 865 870 Employment * 1771 636.604 128.545 3.0545 120 1320 440 555 630 705 802 860 930 975 Employment Full Time 4085 487.152 118.9 1.8603 30 1420 325 420 480 540 628 685 770 840 Employment Part Time 798 502.764 117.416 4.1565 60 1005 330 435 495 570 645 720 780 860 Employment Not Employed 2638 520.277 125.549 2.4444 30 1430 345 450 510 590 660 720 800 885 Employment Refused 70 513.671 136.491 16.3138 210 930 320 420 490 570 696.5 780 900 930 Education * 1966 625.586 133.976 3.0216 120 1420 420 540 628 699 790 855 926 975 Education < High School 832 515.445 135.697 4.7045 30 1317 300 435 510 585 670 750 860 900 Education High School Graduate 2604 505.367 123.006 2.4105 30 1430 330 420 495 570 659 720 780 840 Education < College 1791 496.616 119.862 2.8323 60 1350 315 420 480 565 630 690 779 845 Education College Graduate 1245 492.516 117.558 3.3317 75 1404 330 420 480 540 629 690 775 900 Education Post Graduate 924 486.737 110.394 3.6317 105 1295 345 420 480 540 615 660 725 800 Census Region Northeast 2068 523.129 133.703 2.9401 55 1420 345 435 510 600 690 760 860 930 Census Region Midwest 2096 520.846 127.642 2.788 30 1215 330 440 510 598 690 745 840 870 Census Region South 3234 529.019 135.651 2.3854 30 1430 345 450 510 600 699 765 855 925 Census Region West 1964 530.918 139.966 3.1583 60 1404 345 449.5 510 600 690 769 862 940 Day Of Week Weekday 6303 511.13 131.826 1.6605 30 1430 330 420 495 570 670 745 840 920 Day Of Week Weekend 3059 557.517 134.392 2.4299 30 1420 360 480 540 630 720 780 870 925 Season Winter 2514 534.911 134.719 2.6869 55 1404 355 450 520 600 700 780 870 930 Season Spring 2431 526.839 130.49 2.6466 30 1175 345 445 510 600 690 750 840 900 Season Summer 2533 527.653 139.46 2.771 30 1430 330 435 510 600 699 765 840 930 Season Fall 1884 512.228 131.14 3.0213 60 1420 330 430 505 570 660 735 840 900 Asthma No 8608 525.05 133.571 1.4397 30 1430 345 445 510 600 690 750 840 915 Asthma Yes 692 540.061 143.571 5.4577 30 1404 330 450 537.5 617.5 715 780 900 945 Asthma DK 62 544.194 140.992 17.906 300 1035 330 465 535 600 720 780 930 1035 Angina No 9039 526.754 134.235 1.4119 30 1420 345 445 510 600 690 760 855 925 Angina Yes 249 513.743 137.698 8.7263 60 1430 300 445 510 595 660 735 795 845 Angina DK 74 511.392 146.297 17.0067 30 930 300 420 510 600 720 780 840 930 Bronchitis/ Emphysema No 8860 526.549 134.267 1.4264 30 1430 345 445 510 600 690 760 850 924 Bronchitis/ Emphysema Yes 432 521.713 138.459 6.6616 80 1110 300 420 510 600 705 765 840 930 Bronchitis/ Emphysema DK 70 521.243 131.857 15.7599 210 930 300 450 510 600 690 745 840 930 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 100 August 1997 Table 15 84. Statistics for 24 Hour Cumulative Number of Minutes Spent Attending Full Time School Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 884 358.537 130.347 4.384 1 840 95 300 390 435 483 550 600 640 Gender Male 468 369.301 123.186 5.6943 20 840 120 320 390 435 485 555 595 645 Gender Female 416 346.428 137.1 6.7219 1 710 75 262.5 385 430 480 535 600 628 Age ( years) * 7 232.143 148.123 55.9853 10 495 10 180 210 320 495 495 495 495 Age ( years) 1 4 56 365.036 199.152 26.6128 20 710 30 172.5 427.5 530 595 628 665 710 Age ( years) 5 11 297 387.811 98.013 5.6873 60 645 170 360 390 435 485 555 600 630 Age ( years) 12 17 271 392.28 84.986 5.1625 10 605 200 375 405 435 460 485 510 555 Age ( years) 18 64 247 292.194 154.58 9.8357 1 840 60 180 289 400 480 535 645 785 Age ( years) > 64 6 203.333 147.366 60.1618 75 480 75 120 152.5 240 480 480 480 480 Race White 665 362.913 128.548 4.9849 1 825 107 310 392 435 485 550 600 630 Race Black 92 351.793 129.647 13.5166 40 710 70 286.5 387.5 432.5 465 526 645 710 Race Asian 33 346.303 156.009 24.1576 90 840 120 225 365 435 500 565 840 840 Race Some Others 29 337.828 148.115 27.5043 58 553 70 212 360 445 502 540 553 553 Race Hispanic 58 345.259 124.048 16.2883 30 565 85 260 377.5 430 480 510 510 565 Race Refused 7 285 157.03 59.3517 60 440 60 150 290 440 440 440 440 440 Hispanic No 771 359.565 130.825 4.7116 1 840 100 300 390 435 483 550 600 645 Hispanic Yes 103 353.107 126.354 12.4501 30 630 85 269 385 425 483 510 595 600 Hispanic DK 4 315.5 167.773 83.8863 65 416 65 221 391 410 415 415 415 415 Hispanic Refused 6 348.333 140.594 57.3973 150 445 150 185 435 440 445 445 445 445 Employment * 608 386.497 107.308 4.3519 10 710 165 361 400 440 485 550 595 625 Employment Full Time 49 206.551 133.583 19.0833 5 502 15 115 180 305 430 461 502 502 Employment Part Time 89 304.652 134.791 14.2879 25 695 90 210 295 395 480 500 585 695 Employment Not Employed 135 325.274 161.049 13.8609 1 840 60 215 340 420 500 605 785 825 Employment Refused 3 270 147.224 85 185 440 185 185 440 440 440 440 440 440 Education * 666 384.985 107.925 4.182 10 710 160 360 400 440 485 550 595 625 Education < High School 14 267.071 129.31 34.5595 5 415 5 175 310 357 385 415 415 415 Education High School Graduate 54 238.481 141.148 19.2079 58 785 60 125 212 330 400 480 480 785 Education < College 100 303.35 170.598 17.0598 1 840 60 185 272.5 415 525.5 613.5 760 832.5 Education College Graduate 24 238.417 145.897 29.781 25 565 30 135 200 360 430 460 565 565 Education Post Graduate 26 302.808 144.149 28.2699 10 535 95 210 300 461 500 502 535 535 Census Region Northeast 186 351.597 127.019 9.3135 60 825 120 268 375 420 483 520 600 785 Census Region Midwest 200 358.07 123.934 8.7634 5 645 87.5 307.5 392.5 425 470 527.5 577.5 602 Census Region South 322 373.879 139.7 7.7852 10 840 60 330 405 450 500 565 625 645 Census Region West 176 338.335 120.469 9.0807 1 630 120 262.5 375 410 465 540 555 600 Day Of Week Weekday 858 363.66 126.018 4.3022 1 840 120 310 390 435 485 550 600 640 Day Of Week Weekend 26 189.5 158.415 31.0677 15 465 20 60 120 300 460 465 465 465 Season Winter 302 375.113 118.518 6.8199 5 695 150 330 395 440 495 550 612 640 Season Spring 287 353.359 133.705 7.8924 10 840 90 290 390 430 475 500 570 710 Season Summer 125 332.448 142.088 12.7088 40 630 70 217 375 425 470 550 600 600 Season Fall 170 357.018 132.833 10.1878 1 785 120 285 380 430 510 565 605 645 Asthma No 784 357.969 130.658 4.6663 1 840 95 295 390 435 485 550 595 630 Asthma Yes 96 362.958 127.895 13.0533 20 695 95 334 390 427.5 475 540 645 695 Asthma DK 4 363.75 162.551 81.2756 120 450 120 280 442.5 447.5 450 450 450 450 Angina No 875 358.57 130.546 4.4133 1 840 95 300 390 435 483 550 600 640 Angina Yes 4 382.5 87.702 43.8511 255 455 255 330 410 435 455 455 455 455 Angina DK 5 333.6 140.481 62.8248 120 460 120 270 378 440 460 460 460 460 Bronchitis/ Emphysema No 851 359.132 130.435 4.4713 1 840 95 300 390 435 485 550 600 640 Bronchitis/ Emphysema Yes 27 340.111 132.683 25.5349 30 605 60 305 365 435 450 460 605 605 Bronchitis/ Emphysema DK 6 357.167 121.491 49.5987 120 440 120 350 396.5 440 440 440 440 440 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Exposure Factors Handbook Page August 1997 15 101 Table 15 85. Statistics for 24 Hour Cumulative Number of Minutes Spent in Active Sports Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 1384 123.994 112.825 3.0328 1 1130 15 50 90 165 267 330 435 525 Gender Male 753 136.781 120.777 4.4014 1 1130 20 60 105 180 285 375 500 558 Gender Female 629 108.628 100.648 4.0131 1 1065 15 38 75 150 240 300 370 435 Gender Refused 2 142.5 38.891 27.5 115 170 115 115 142.5 170 170 170 170 170 Age ( years) * 23 108.696 78.628 16.395 5 290 30 40 90 155 220 225 290 290 Age ( years) 1 4 105 115.848 98.855 9.6472 10 630 30 45 90 159 250 330 345 390 Age ( years) 5 11 247 148.87 126.627 8.0571 2 975 20 60 120 188 320 390 510 558 Age ( years) 12 17 215 137.46 124.516 8.4919 5 1065 15 60 110 180 265 375 470 520 Age ( years) 18 64 642 120.315 110.376 4.3562 1 1130 15 45 90 160 250 330 450 525 Age ( years) > 64 152 88.007 80.207 6.5056 1 380 15 30 60 120 220 285 315 330 Race White 1139 125.994 116.168 3.4421 1 1130 15 50 90 165 270 340 452 530 Race Black 109 113.431 96.788 9.2706 5 440 10 45 86 150 240 332 430 435 Race Asian 30 89.933 79.214 14.4625 5 310 10 30 60 145 215 235 310 310 Race Some Others 35 135.371 112.206 18.9663 15 553 20 60 105 195 270 330 553 553 Race Hispanic 59 116.288 91.326 11.8897 1 520 15 45 115 145 240 305 345 520 Race Refused 12 120 86.576 24.9924 40 300 40 60 95 130 290 300 300 300 Hispanic No 1250 124.471 113.469 3.2094 1 1130 15 45 90 165 270 330 435 515 Hispanic Yes 120 121.2 110.791 10.1138 1 630 15 50 90 147.5 240 335 520 553 Hispanic DK 4 113.75 57.5 28.75 60 185 60 67.5 105 160 185 185 185 185 Hispanic Refused 10 102 72.119 22.8059 40 290 40 60 82.5 105 215 290 290 290 Employment * 561 137.073 120.838 5.1018 2 1065 20 60 110 180 285 370 452 558 Employment Full Time 375 117.579 107.304 5.5412 5 1130 20 45 90 155 240 305 380 525 Employment Part Time 87 116.207 87.553 9.3867 1 450 15 60 95 160 235 285 355 450 Employment Not Employed 352 112.537 109.99 5.8625 1 600 10 30 70 150 270 330 475 520 Employment Refused 9 99.444 77.235 25.7451 30 280 30 45 90 120 280 280 280 280 Education * 610 137.702 121.227 4.9083 2 1065 20 60 110 180 285 370 470 558 Education < High School 86 101.047 99.745 10.7558 10 570 15 30 60 135 225 270 510 570 Education High School Graduate 233 116.794 116.802 7.652 1 1130 20 45 85 150 240 300 420 530 Education < College 178 115.781 100.276 7.516 1 525 15 45 90 160 270 340 418 475 Education College Graduate 165 116.218 97.925 7.6235 1 600 15 50 90 150 250 310 380 450 Education Post Graduate 112 106.446 97.879 9.2487 5 375 10 40 60 142.5 270 330 360 375 Census Region Northeast 333 131.967 129.1 7.0746 1 1130 15 60 100 170 275 345 485 558 Census Region Midwest 254 116.882 101.859 6.3912 5 570 18 45 90 150 255 315 430 440 Census Region South 479 119.476 108.664 4.965 1 975 15 45 90 160 265 330 410 462 Census Region West 318 128.132 108.811 6.1018 1 625 25 55 92.5 175 295 330 500 525 Day Of Week Weekday 902 115.47 97.84 3.2577 1 650 15 45 90 150 240 300 395 485 Day Of Week Weekend 482 139.946 135.196 6.158 1 1130 20 59 100 180 300 380 500 565 Season Winter 316 115.589 115.201 6.4806 1 1065 15 45 85 155 240 305 370 475 Season Spring 423 130.775 105.017 5.1061 5 650 30 60 105 175 270 330 435 515 Season Summer 425 129.541 115.123 5.5843 1 625 15 45 95 178 290 375 462 530 Season Fall 220 112.314 118.325 7.9775 1 1130 15 43 77.5 143.5 240 290 460 565 Asthma No 1266 122.461 109.594 3.0801 1 1130 15 45 90 162 266 330 430 515 Asthma Yes 105 144.829 145.828 14.2314 1 1065 15 60 110 180 300 390 553 565 Asthma DK 13 105 110.416 30.6239 30 450 30 60 60 90 165 450 450 450 Angina No 1343 125.491 113.589 3.0995 1 1130 15 50 90 165 270 332 440 525 Angina Yes 33 72.091 73.998 12.8815 5 330 5 30 50 60 180 275 330 330 Angina DK 8 86.875 41.139 14.5448 40 155 40 60 75 115 155 155 155 155 Bronchitis/ Emphysema No 1331 124.101 113.19 3.1026 1 1130 15 50 90 165 267 330 435 520 Bronchitis/ Emphysema Yes 43 130 112.663 17.181 10 553 30 45 110 165 270 340 553 553 Bronchitis/ Emphysema DK 10 84 39.847 12.6007 40 155 40 60 75 105 147.5 155 155 155 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 102 August 1997 Table 15 86. Statistics for 24 Hour Cumulative Number of Minutes Spent in Outdoor Recreation Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 253 211.23 185.48 11.661 5 1440 20 60 165 300 480 574 670 690 Gender Male 140 231.78 207.41 17.529 5 1440 17.5 67.5 177 330 502.5 600 690 735 Gender Female 112 183.67 150.15 14.188 5 645 20 60 150 255 380 525 585 630 Gender Refused 1 420 * * 420 420 420 420 420 420 420 420 420 420 Age ( years) * 2 337.5 201.53 142.5 195 480 195 195 337.5 480 480 480 480 480 Age ( years) 1 4 13 166.54 177.06 49.109 15 630 15 30 130 180 370 630 630 630 Age ( years) 5 11 21 206.14 156.17 34.078 30 585 60 90 165 245 360 574 585 585 Age ( years) 12 17 27 155.07 128.28 24.687 5 465 5 60 135 225 420 420 465 465 Age ( years) 18 64 158 223.61 192.97 15.352 5 1440 30 80 172.5 310 505 585 690 690 Age ( years) > 64 32 211.06 206.59 36.521 5 735 5 30 171 375 495 600 735 735 Race White 225 209.77 182.74 12.183 5 1440 20 60 165 300 460 570 670 690 Race Black 16 233.88 231.3 57.825 5 690 5 42.5 150 450 585 690 690 690 Race Asian 3 203.33 262.22 151.39 30 505 30 30 75 505 505 505 505 505 Race Some Others 2 327.5 130.82 92.5 235 420 235 235 327.5 420 420 420 420 420 Race Hispanic 4 77.5 53.929 26.964 20 150 20 42.5 70 112.5 150 150 150 150 Race Refused 3 308.33 209.42 120.91 180 550 180 180 195 550 550 550 550 550 Hispanic No 238 211.8 187.07 12.126 5 1440 20 60 165 300 480 585 690 690 Hispanic Yes 12 175.5 149.06 43.029 15 511 15 70 150 255 340 511 511 511 Hispanic Refused 3 308.33 209.42 120.91 180 550 180 180 195 550 550 550 550 550 Employment * 60 177.1 150.02 19.368 5 630 12.5 60 147.5 230 395 519.5 585 630 Employment Full Time 104 210.74 153.37 15.039 5 670 30 82.5 180 294 419 511 600 645 Employment Part Time 19 205.26 204.04 46.81 30 690 30 60 150 180 570 690 690 690 Employment Not Employed 68 244.44 245.03 29.715 5 1440 15 60 179.5 375 525 690 735 1440 Employment Refused 2 187.5 10.607 7.5 180 195 180 180 187.5 195 195 195 195 195 Education * 64 176.73 145.32 18.165 5 630 15 60 152.5 225 370 465 585 630 Education < High School 22 259.41 177.97 37.943 5 600 30 105 247.5 380 525 600 600 600 Education High School Graduate 59 238.2 228.99 29.812 15 1440 20 90 175 310 511 670 690 1440 Education < College 54 218.09 172.21 23.434 5 690 25 65 172.5 345 460 550 570 690 Education College Graduate 31 224.71 193.06 34.675 20 690 30 60 150 325 505 645 690 690 Education Post Graduate 23 157.61 178.18 37.153 5 735 10 50 80 200 370 480 735 735 Census Region Northeast 52 189.6 160.88 22.31 5 690 30 60 162.5 231.5 370 574 670 690 Census Region Midwest 54 212.09 228.41 31.083 5 1440 20 60 177.5 280 419 600 735 1440 Census Region South 84 217.26 175.27 19.123 5 645 15 62.5 150 347.5 495 525 600 645 Census Region West 63 220.29 179.71 22.642 10 690 30 75 165 280 545 585 690 690 Day Of Week Weekday 129 197.21 195.32 17.197 5 1440 15 60 150 275 465 525 670 735 Day Of Week Weekend 124 225.81 174.26 15.649 5 690 20 85 180 310 480 600 690 690 Season Winter 31 196.61 165.52 29.728 5 585 5 60 165 280 440 550 585 585 Season Spring 75 198.85 161.67 18.668 5 690 25 75 180 270 465 545 670 690 Season Summer 102 228.16 204.18 20.217 5 1440 30 75 179.5 325 459 585 690 690 Season Fall 45 203.53 193.83 28.895 5 735 20 60 120 330 505 574 735 735 Asthma No 232 208.24 187.69 12.323 5 1440 20 60 159 294 480 585 690 690 Asthma Yes 19 250.21 166.64 38.23 15 570 15 80 255 350 525 570 570 570 Asthma DK 2 187.5 10.607 7.5 180 195 180 180 187.5 195 195 195 195 195 Angina No 245 206.82 184.85 11.81 5 1440 20 60 160 288 480 570 670 690 Angina Yes 6 399.17 151.21 61.731 285 690 285 310 345 420 690 690 690 690 Angina DK 2 187.5 10.607 7.5 180 195 180 180 187.5 195 195 195 195 195 Bronchitis/ Emphysema No 238 212.24 189.23 12.266 5 1440 20 60 165 300 495 585 690 690 Bronchitis/ Emphysema Yes 13 196.31 122.22 33.896 5 370 5 117 160 310 340 370 370 370 Bronchitis/ Emphysema DK 2 187.5 10.607 7.5 180 195 180 180 187.5 195 195 195 195 195 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Exposure Factors Handbook Page August 1997 15 103 Table 15 87. Statistics for 24 Hour Cumulative Number of Minutes Spent in Exercise Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 564 77.429 70.438 2.966 4 670 15 30 60 100 150 195 275 420 Gender Male 262 84.676 75.778 4.6816 5 670 20 30 60 117 165 205 285 450 Gender Female 302 71.142 64.927 3.7361 4 525 15 30 60 90 125 175 265 360 Age ( years) * 10 76.5 74.014 23.405 15 270 15 30 60 90 187.5 270 270 270 Age ( years) 1 4 11 127.273 187.18 56.437 15 670 15 30 60 150 160 670 670 670 Age ( years) 5 11 26 132.5 126.31 24.772 15 525 25 60 90 180 275 450 525 525 Age ( years) 12 17 35 67.829 41.589 7.0298 15 180 20 30 60 100 120 150 180 180 Age ( years) 18 64 407 77.572 63.597 3.1524 4 480 20 30 60 100 145 185 265 300 Age ( years) > 64 75 54.853 44.455 5.1332 6 195 10 25 40 70 120 150 193 195 Race White 480 78.015 71.517 3.2643 4 670 15 30 60 100 150 194 285 450 Race Black 34 74.706 44.67 7.6608 15 250 15 45 60 105 120 130 250 250 Race Asian 10 46.3 25.038 7.9177 15 95 15 30 41.5 60 82.5 95 95 95 Race Some Others 14 80.214 73.944 19.762 30 275 30 30 47.5 90 179 275 275 275 Race Hispanic 19 63 60.658 13.916 15 265 15 30 45 60 160 265 265 265 Race Refused 7 128.571 130.47 49.313 30 360 30 55 60 270 360 360 360 360 Hispanic No 516 76.872 70.111 3.0865 4 670 15 30 60 99 145 193 275 420 Hispanic Yes 38 76.553 59.516 9.6548 15 265 20 30 60 110 160 250 265 265 Hispanic DK 3 65 69.462 40.104 20 145 20 20 30 145 145 145 145 145 Hispanic Refused 7 128.571 130.47 49.313 30 360 30 55 60 270 360 360 360 360 Employment * 72 99.014 111.6 13.153 15 670 20 30 60 120 180 275 525 670 Employment Full Time 300 72.663 55.618 3.2111 5 460 20 30 60 90 130 179.5 240 291 Employment Part Time 50 85.98 83.568 11.818 10 420 20 30 60 92 167.5 300 390 420 Employment Not Employed 139 72.683 63.36 5.3742 4 480 10 30 60 90 135 195 240 265 Employment Refused 3 113.333 135.77 78.387 30 270 30 30 40 270 270 270 270 270 Education * 83 101.976 110.97 12.18 15 670 25 30 60 120 205 275 525 670 Education < High School 21 58.238 66.062 14.416 10 300 10 28 30 60 90 165 300 300 Education High School Graduate 124 81.048 63.037 5.6609 4 298 15 30 60 115 179 205 250 265 Education < College 104 80.856 70.181 6.8818 15 480 20 30 60 112.5 150 170 240 420 Education College Graduate 110 73.627 62.548 5.9637 5 460 20 30 60 98 130 180 285 297 Education Post Graduate 122 60.861 38.368 3.4737 5 240 15 30 60 80 110 127 165 185 Census Region Northeast 130 88.423 77.649 6.8102 10 450 15 30 60 120 200 240 297 420 Census Region Midwest 101 63.564 44.33 4.411 10 300 15 30 60 89 115 120 170 215 Census Region South 177 75.311 71.62 5.3833 5 525 15 30 60 90 150 185 298 480 Census Region West 156 79.647 75.331 6.0313 4 670 20 30 60 104 130 183 270 460 Day Of Week Weekday 426 73.096 63.872 3.0946 4 670 15 30 60 90 130 180 240 298 Day Of Week Weekend 138 90.804 86.574 7.3697 6 525 15 30 60 120 200 265 420 460 Season Winter 150 67.387 49.859 4.071 8 285 15 30 60 90 127.5 175 212.5 240 Season Spring 140 74.871 55.395 4.6817 10 360 17.5 30 60 90 147.5 181 220 298 Season Summer 192 93.188 91.294 6.5886 5 670 20 30 62.5 120 180 250 450 525 Season Fall 82 63.268 63.277 6.9878 4 460 15 30 45 75 120 135 300 460 Asthma No 523 76.625 70.247 3.0717 4 670 15 30 60 100 150 185 265 420 Asthma Yes 37 78.243 51.454 8.459 20 275 20 45 65 100 120 200 275 275 Asthma DK 4 175 167.03 83.517 10 360 10 35 165 315 360 360 360 360 Angina No 553 77.259 69.366 2.9497 4 670 15 30 60 100 145 193 265 420 Angina Yes 7 27.286 19.576 7.3992 6 60 6 10 25 45 60 60 60 60 Angina DK 4 188.75 150.35 75.177 60 360 60 62.5 167.5 315 360 360 360 360 Bronchitis/ Emphysema No 542 77.098 69.465 2.9838 4 670 15 30 60 100 145 185 265 420 Bronchitis/ Emphysema Yes 17 64.588 60.635 14.706 10 275 10 30 50 63 120 275 275 275 Bronchitis/ EMphysema DK 5 157 149.57 66.888 15 360 15 60 80 270 360 360 360 360 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 104 August 1997 Table 15 88. Statistics for 24 Hour Cumulative Number of Minutes Spent in Food Preparationa Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 4278 52.37 52.8802 0.8085 1 555 5 20 35 65 115 150 210 265 Gender Male 1341 37.8106 42.1779 1.1518 1 480 5 13 30 50 80 105 150 210 Gender Female 2937 59.0177 55.862 1.0308 1 555 5 25 45 75 120 155 224 272 Age ( years) * 94 52 43.2171 4.4575 5 215 5 20 40 60 110 150 195 215 Age ( years) 1 4 24 56.4583 60.3699 12.3229 5 240 5 22.5 30 75 150 180 240 240 Age ( years) 5 11 60 25.1667 29.6877 3.8327 1 120 2 5 11 30 60 107 120 120 Age ( years) 12 17 131 21.7023 37.6902 3.293 1 385 2 5 10 30 55 70 90 90 Age ( years) 18 64 3173 52.0905 52.8766 0.9387 1 555 5 20 35 65 110 145 210 265 Age ( years) > 64 796 60.5025 54.669 1.9377 1 525 5 25 45 80 120 150 240 270 Race White 3584 51.6205 53.2589 0.8896 1 555 5 19 35 65 110 145 210 265 Race Black 377 57.0265 52.2893 2.693 1 390 5 20 40 75 120 150 210 240 Race Asian 62 54 41.8224 5.3115 2 210 5 20 50 70 105 130 175 210 Race Some Others 66 50.5909 53.2368 6.553 1 295 5 15 33.5 70 115 150 210 295 Race Hispanic 132 59.2121 49.7947 4.3341 2 315 5 23.5 55 80 110 135 225 285 Race Refused 57 53.1404 49.297 6.5295 2 210 5 20 40 60 120 180 195 210 Hispanic No 3960 51.848 52.6035 0.8359 1 555 5 20 35 65 111 145 205 255 Hispanic Yes 254 59.2244 56.7225 3.5591 2 420 5 20 45 75 120 155 240 315 Hispanic DK 20 54.95 53.2002 11.8959 6 240 8 25 45 60 112.5 180 240 240 Hispanic Refused 44 58.6136 53.2957 8.0346 2 210 5 27.5 37.5 80 150 180 210 210 Employment * 210 27.1667 40.5487 2.7981 1 385 2 5 15 30 60 90 120 180 Employment Full Time 1988 45.4874 46.6734 1.0468 1 480 5 15 30 60 90 130 180 240 Employment Part Time 420 53.8643 55.3474 2.7007 2 520 5 20 40 65 105 125 205 255 Employment Not Employed 1625 63.6357 57.7587 1.4328 1 555 5 29 45 90 125 170 240 275 Employment Refused 35 53.5429 66.7803 11.2879 2 340 2 20 30 60 120 195 340 340 Education * 291 31.7079 42.6211 2.4985 1 385 2 5 15 37 75 120 155 195 Education < High School 450 61.2556 53.2321 2.5094 1 555 5 30 45 90 120 150 197 225 Education High School Graduate 1449 58.8392 56.6653 1.4886 1 520 5 22 45 75 120 155 240 310 Education < College 954 52.0073 52.2377 1.6913 1 525 5 20 34.5 65 110 150 210 245 Education College Graduate 659 46.2018 48.0775 1.8728 1 515 5 15 30 60 100 125 180 224 Education Post Graduate 475 46.1621 48.7374 2.2362 1 375 5 15 30 60 96 135 200 270 Census Region Northeast 952 52.312 53.2054 1.7244 1 480 5 20 40 61 110 140 205 255 Census Region Midwest 956 53.2333 51.8139 1.6758 1 520 5 20 35 65 120 150 210 265 Census Region South 1453 53.3944 53.4621 1.4025 1 555 5 16 35 70 120 150 195 245 Census Region West 917 49.9073 52.7204 1.741 1 515 5 15 31 60 105 135 225 265 Day Of Week Weekday 2995 50.0571 49.979 0.9132 1 555 5 19 35 60 105 132 180 240 Day Of Week Weekend 1283 57.7693 58.7687 1.6407 1 420 5 20 40 75 130 180 240 300 Season Winter 1173 50.6206 48.6464 1.4204 1 480 5 18 35 65 110 135 195 240 Season Spring 1038 54.3892 54.484 1.6911 1 525 5 20 38.5 70 120 150 224 265 Season Summer 1148 51.3972 54.1854 1.5992 1 555 5 20 35 60 110 137 208 300 Season Fall 919 53.5375 54.5349 1.7989 1 520 5 20 37 67 120 155 200 265 Asthma No 3948 52.0433 53.1805 0.8464 1 555 5 20 35 65 110 145 210 265 Asthma Yes 300 57.1433 49.4425 2.8546 1 272 5 20.5 45 75 120 160 199 240 Asthma DK 30 47.6333 44.8119 8.1815 2 195 5 10 32.5 60 117.5 120 195 195 Angina No 4091 52.1936 52.9733 0.8282 1 555 5 20 35 65 115 150 210 265 Angina Yes 149 56.8054 48.2377 3.9518 1 340 5 25 45 80 120 135 180 210 Angina DK 38 53.9737 60.4168 9.8009 2 240 2 10 32.5 60 120 240 240 240 Bronchitis/ Emphysema No 4024 52.0318 53.0963 0.837 1 555 5 20 35 65 110 145 210 265 Bronchitis/ Emphysema Yes 216 56.9074 46.6833 3.1764 3 240 5 20 45 85 120 150 198 210 Bronchitis/ Emphysema DK 38 62.3947 61.7031 10.0096 2 240 2 20 42.5 90 150 240 240 240 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Exposure Factors Handbook Page August 1997 15 105 Table 15 89. Statistics for 24 Hour Cumulative Number of Minutes Spent Doing Dishes/ Laundrya Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 1865 61.7882 68.894 1.5953 1 825 10 20 30 80 150 190 255 335 Gender Male 324 46.1142 50.179 2.7877 1 360 10 15 30 60 120 135 210 260 Gender Female 1541 65.0837 71.793 1.8289 1 825 10 20 35 90 150 200 270 340 Age ( years) * 32 43.75 46.49 8.2183 10 225 10 15 30 55 90 150 225 225 Age ( years) 1 4 10 49.3 66.545 21.0434 3 210 3 5 22.5 55 165 210 210 210 Age ( years) 5 11 20 34.25 28.799 6.4395 1 92 1.5 15 30 58 82.5 91 92 92 Age ( years) 12 17 47 32.6809 30.603 4.4639 2 150 5 10 20 45 65 90 150 150 Age ( years) 18 64 1371 63.2356 67.104 1.8123 1 565 10 20 30 90 150 198 245 335 Age ( years) > 64 385 63.4416 79.738 4.0638 1 825 9 20 35 80 135 195 285 375 Race White 1560 62.2173 69.493 1.7595 1 825 10 20 30 85 147.5 190 270 335 Race Black 170 57.8471 60.026 4.6038 5 390 5 17 30 75 150 180 235 240 Race Asian 19 56.7368 51.705 11.862 3 210 3 15 30 90 120 210 210 210 Race Some Others 25 45.96 41.361 8.2721 5 150 10 15 30 80 120 120 150 150 Race Hispanic 71 69.0141 75.626 8.9752 3 325 5 20 35 105 200 225 275 325 Race Refused 20 60.75 104.217 23.3037 5 475 7.5 15 30 60 127.5 305 475 475 Hispanic No 1732 61.3077 68.206 1.6389 1 825 10 20 30 80 140 180 250 335 Hispanic Yes 112 68.2589 71.468 6.7531 3 325 5 20 30 103 180 225 270 275 Hispanic DK 7 75.7143 66.548 25.1526 10 180 10 15 55 150 180 180 180 180 Hispanic Refused 14 62.5 122.266 32.677 5 475 5 15 25 35 120 475 475 475 Employment * 73 35.3288 37.364 4.3732 1 210 3 15 20 50 80 120 150 210 Employment Full Time 776 56.9549 63.42 2.2766 2 565 10 20 30 70 125 180 240 335 Employment Part Time 214 63.7243 64.791 4.429 2 340 10 15 30 90 151 205 240 275 Employment Not Employed 789 68.5234 76.296 2.7162 1 825 10 25 40 90 158 210 285 375 Employment Refused 13 58.2308 59.448 16.4878 10 180 10 10 30 100 150 180 180 180 Education * 99 37.5253 38.655 3.885 1 210 3 10 30 55 90 120 180 210 Education < High School 216 69.7824 69.956 4.7599 2 570 10 26.5 45 90 151 195 245 315 Education High School Graduate 683 67.3616 76.746 2.9366 1 825 10 20 40 90 150 205 285 405 Education < College 422 64.3033 72.277 3.5184 2 475 10 20 30 85 155 210 285 360 Education College Graduate 262 51.4466 49.386 3.0511 1 260 10 15 30 70 120 158 200 225 Education Post Graduate 183 53.6831 60.208 4.4507 3 360 5 15 30 60 120 190 245 330 Census Region Northeast 471 59.5223 60.067 2.7677 2 565 10 20 35 75 135 180 210 285 Census Region Midwest 405 60.3235 68.244 3.3911 1 480 5 15 30 75 150 198 240 285 Census Region South 602 65.8156 75.076 3.0599 1 825 10 20 35 90 150 210 270 360 Census Region West 387 59.814 69.562 3.536 2 570 10 15 30 70 150 210 270 345 Day Of Week Weekday 1270 59.5402 68.798 1.9305 1 825 9 20 30 75 137.5 190 245 330 Day Of Week Weekend 595 66.5866 68.909 2.825 5 565 10 20 40 90 150 210 275 340 Season Winter 503 65.3479 79.461 3.543 1 825 10 20 30 90 150 210 300 360 Season Spring 438 62.7763 67.751 3.2373 2 450 10 20 35 75 150 190 285 335 Season Summer 510 61.7294 62.801 2.7809 2 565 10 20 40 90 140 180 240 270 Season Fall 414 56.4903 63.125 3.1024 1 570 8 15 30 65 130 195 230 270 Asthma No 1712 61.9533 69.64 1.6831 1 825 10 20 30 85 150 195 270 335 Asthma Yes 147 60.8912 60.62 4.9999 2 375 10 20 30 76 151 180 250 255 Asthma DK 6 36.6667 41.793 17.062 10 120 10 10 25 30 120 120 120 120 Angina No 1790 62.0788 69.212 1.6359 1 825 10 20 30 85 150 190 255 335 Angina Yes 66 54.7576 62.985 7.7529 5 335 9 25 30 60 120 200 315 335 Angina DK 9 55.5556 44.19 14.7301 10 120 10 30 30 90 120 120 120 120 Bronchitis/ Emphysema No 1746 60.5063 65.326 1.5634 1 565 10 20 30 80 140 190 250 325 Bronchitis/ Emphysema Yes 112 82.7143 109.505 10.3473 3 825 5 20 57.5 103 170 240 360 570 Bronchitis/ Emphysema DK 7 46.7143 51.403 19.4284 2 120 2 10 30 120 120 120 120 120 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes.

a Includes food cleanup, clothes care. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 106 August 1997 Table 15 90. Statistics for 24 Hour Cumulative Number of Minutes Spent in Housekeepinga Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 1943 118.833 113.369 2.5719 1 810 10 40 90 165 270 345 465 540 Gender Male 370 109.419 116.541 6.0587 1 810 10 30 60 150 270 360 425 560 Gender Female 1573 121.047 112.533 2.8374 1 790 15 45 90 165 270 345 465 540 Age ( years) * 47 146.043 121.3 17.6935 10 480 10 45 115 240 300 375 480 480 Age ( years) 1 4 11 74.091 69.42 20.9308 10 270 10 40 60 90 90 270 270 270 Age ( years) 5 11 54 42.852 34.096 4.6399 1 180 5 20 30 53 80 120 150 180 Age ( years) 12 17 72 78.111 75.546 8.9031 1 300 5 27.5 60 105 210 240 285 300 Age ( years) 18 64 1316 120.422 113.654 3.133 1 810 15 40 90 165 270 360 465 525 Age > 64 443 128.217 118.925 5.6503 3 790 10 55 90 180 270 345 540 570 Race White 1649 119.056 112.184 2.7626 1 790 10 40 90 165 265 340 465 540 Race Black 137 116.555 109.394 9.3462 1 490 5 30 90 150 300 358 480 484 Race Asian 32 98.75 100.467 17.7602 15 425 15 30 60 127.5 265 345 425 425 Race Some Others 26 82.423 56.436 11.0681 5 210 15 40 60 115 185 190 210 210 Race Hispanic 71 112.648 129.335 15.3492 5 660 8 30 60 135 270 465 518 660 Race Refused 28 189.286 176.198 33.2983 10 810 20 52.5 147.5 247.5 420 465 810 810 Hispanic No 1771 117.443 110.586 2.6278 1 790 10 40 90 165 265 335 425 525 Hispanic Yes 134 121.657 129.578 11.1939 5 660 10 35 85 135 270 470 540 658 Hispanic DK 15 146.867 127.912 33.0268 10 510 10 30 120 210 240 510 510 510 Hispanic Refused 23 191.087 180.296 37.5944 10 810 20 45 150 255 390 420 810 810 Employment * 138 65.565 68.838 5.8599 1 375 5 25 45 80 180 240 285 300 Employment Full Time 673 106.579 102.376 3.9463 1 655 10 30 70 145 240 325 413 490 Employment Part Time 193 124.72 117.48 8.4564 1 660 15 45 90 180 270 390 480 540 Employment Not Employed 925 132.681 119.442 3.9272 3 790 15 55 105 180 295 370 484 600 Employment Refused 14 236.786 208.221 55.6495 10 810 10 120 182.5 300 430 810 810 810 Education * 171 82.164 96.944 7.4135 1 810 5 30 45 105 220 270 300 375 Education < High School 246 140.736 125.356 7.9924 3 715 10 60 120 180 300 400 540 660 Education High School Graduate 677 125.078 120.495 4.631 2 790 15 45 90 175 270 375 490 610 Education < College 433 112.898 100.145 4.8127 1 570 10 40 90 150 240 320 420 470 Education College Graduate 245 107.302 102.244 6.5321 1 585 15 30 60 150 240 328 405 465 Education Post Graduate 171 130.813 117.998 9.0236 5 655 15 60 90 180 280 390 495 540 Census Region Northeast 464 119.235 116.368 5.4022 2 790 10 35 90 165 245 330 480 655 Census Region Midwest 413 117.855 112.595 5.5405 1 715 10 34 88 165 255 345 480 525 Census Region South 648 119.912 116.159 4.5631 1 810 10 40 90 165 285 370 435 540 Census Region West 418 117.679 106.559 5.212 5 720 15 40 90 165 255 340 420 470 Day Of Week Weekday 1316 113.21 111.913 3.085 1 790 10 30 75 150 255 330 470 550 Day Of Week Weekend 627 130.635 115.567 4.6153 1 810 15 55 90 180 290 370 435 525 Season Winter 470 111.4 100.617 4.6411 1 810 10 45 85 160 240 290 390 480 Season Spring 451 122.621 114.024 5.3692 3 720 15 40 90 180 270 360 465 540 Season Summer 563 111.803 114.5 4.8256 1 690 10 30 75 135 255 365 465 610 Season Fall 459 131.344 122.391 5.7127 1 790 15 45 90 180 300 390 480 560 Asthma No 1789 118.529 112.075 2.6497 1 790 10 40 90 165 270 345 465 540 Asthma Yes 140 115.664 115.811 9.7878 5 690 10 36.5 67 150 277.5 377.5 470 480 Asthma DK 14 189.286 208.565 55.7414 10 810 10 45 122.5 255 340 810 810 810 Angina No 1853 117.731 112.346 2.6099 1 790 13 40 90 160 265 345 465 540 Angina Yes 75 122.88 103.762 11.9814 5 394 5 30 90 210 270 320 370 394 Angina DK 15 234.667 204 52.6725 10 810 10 120 240 300 480 810 810 810 Bronchitis/ Emphysema No 1816 118.073 112.929 2.65 1 790 10 40 90 160 270 355 465 540 Bronchitis/ Emphysema Yes 107 118.701 102.942 9.9518 5 480 10 30 90 180 255 290 465 470 Bronchitis/ Emphysema DK 20 188.5 176.435 39.452 5 810 7.5 85 155 240 320 575 810 810 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes.

a Includes cleaning house, other repairs, and household work. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Exposure Factors Handbook Page August 1997 15 107 Table 15 91. Statistics for 24 Hour Cumulative Number of Minutes Spent in Bathing ( a) Percentiles Group Name Group Code N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 6416 26.0842 29.6711 0.3704 1 705 5 10 20 30 50 60 90 120 Gender Male 2930 24.2416 31.0251 0.5732 1 705 5 10 20 30 45 60 75 100 Gender Female 3484 27.6372 28.4021 0.4812 1 555 5 10 20 30 60 75 105 135 Gender Refused 2 20 14.1421 10 10 30 10 10 20 30 30 30 30 30 Age ( years) * 114 29.0088 38.9855 3.6513 2 300 5 10 20 30 60 60 105 275 Age ( years) 1 4 330 29.9727 19.4226 1.0692 1 170 10 15 30 31 54.5 60 85 90 Age ( years) 5 11 438 25.7511 35.3164 1.6875 1 690 5 15 20 30 45 60 60 75 Age ( years) 12 17 444 23.1216 18.7078 0.8878 1 210 5 10 18 30 45 60 65 90 Age ( years) 18 64 4383 25.4312 27.1553 0.4102 1 555 5 10 20 30 50 60 90 120 Age ( years) > 64 707 29.9123 44.502 1.6737 1 705 5 10 20 30 60 85 120 150 Race White 5117 25.0233 28.5494 0.3991 1 705 5 10 20 30 45 60 90 115 Race Black 707 31.4851 31.5524 1.1866 1 295 5 15 22 40 60 80 120 170 Race Asian 112 28.1786 29.7661 2.8126 5 270 5 15 20 30 60 75 90 90 Race Some Others 122 30.2213 27.2726 2.4691 1 240 8 15 27.5 35 50 60 100 150 Race Hispanic 280 28.7786 39.2648 2.3465 2 546 5 15 20 31.5 54.5 62.5 90 155 Race Refused 78 27.5769 40.3235 4.5657 3 275 5 10 15 30 60 100 195 275 Hispanic No 5835 25.8833 28.5411 0.3736 1 705 5 10 20 30 50 60 90 120 Hispanic Yes 486 28.751 40.5582 1.8398 2 570 5 15 20 30 50 60 90 140 Hispanic DK 33 25.7576 16.7724 2.9197 5 65 10 15 20 30 55 65 65 65 Hispanic Refused 62 24.2581 37.2268 4.7278 3 275 5 10 15 25 30 60 105 275 Employment * 1189 26.1329 26.4288 0.7665 1 690 5 15 20 30 45 60 75 90 Employment Full Time 3095 24.1499 25.0984 0.4511 1 555 5 10 15 30 45 60 85 110 Employment Part Time 558 24.7616 23.2468 0.9841 1 295 5 10 20 30 46 60 90 110 Employment Not Employed 1528 30.3161 39.9341 1.0216 1 705 5 10 20 30 60 85 120 155 Employment Refused 46 30.4348 45.176 6.6608 3 275 5 10 15 30 55 105 275 275 Education * 1330 25.6759 26.4094 0.7242 1 690 5 15 20 30 45 60 75 90 Education < High School 474 33.3122 53.0129 2.435 1 570 5 15 20.5 33 60 85 110 300 Education High School Graduate 1758 25.822 23.5699 0.5621 1 270 5 10 20 30 50 60 90 120 Education < College 1288 26.4099 27.0338 0.7533 1 255 5 10 20 30 55 75 105 150 Education College Graduate 897 25.3813 34.8197 1.1626 1 705 5 10 15 30 50 65 105 135 Education Post Graduate 669 22.7788 23.0661 0.8918 1 257 5 10 15 30 45 60 85 100 Census Region Northeast 1444 25.0478 24.2512 0.6382 1 360 5 10 20 30 50 60 90 105 Census Region Midwest 1402 24.602 30.2958 0.8091 1 570 5 10 15 30 45 60 85 115 Census Region South 2266 27.4086 26.0895 0.5481 1 300 5 15 20 30 55 65 100 135 Census Region West 1304 26.5238 38.8092 1.0747 1 705 5 10 20 30 48 60 90 133 Day Of Week Weekday 4427 25.2896 30.2913 0.4553 1 705 5 10 20 30 45 60 90 115 Day Of Week Weekend 1989 27.8527 28.1689 0.6316 1 555 5 15 20 30 60 68 100 130 Season Winter 1796 26.858 26.9167 0.6351 1 546 5 11 20 30 50 60 90 110 Season Spring 1645 28.5854 41.0512 1.0121 1 705 5 15 20 30 60 70 115 150 Season Summer 1744 23.9295 20.7343 0.4965 1 270 5 10 19.5 30 45 60 80 100 Season Fall 1231 24.6653 25.5885 0.7293 1 340 5 10 17 30 50 60 95 120 Asthma No 5912 26.0658 30.0373 0.3907 1 705 5 10 20 30 50 60 90 120 Asthma Yes 468 26.5427 22.9543 1.0611 1 210 5 15 20 30 46 60 100 120 Asthma DK 36 23.1389 44.0728 7.3455 3 275 5 10 15 25 30 30 275 275 Angina No 6243 26.0042 29.0175 0.3673 1 705 5 10 20 30 50 60 90 120 Angina Yes 131 31.145 49.5427 4.3286 5 546 5 15 25 30 50 60 105 131 Angina DK 42 22.1905 40.9153 6.3134 3 275 5 10 15 25 30 30 275 275 Bronchitis/ Emphysema No 6112 26.0545 29.857 0.3819 1 705 5 10 20 30 50 60 90 120 Bronchitis/ Emphysema Yes 268 27.2463 22.162 1.3538 1 150 5 13 20 30 60 60 95 131 Bronchitis/ Emphysema DK 36 22.4722 44.0859 7.3477 3 275 5 10 15 22.5 30 30 275 275 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes.

a Includes baby and child care, personal care services, washing and personal hygiene ( bathing, showering, etc.) Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 108 August 1997 Table 15 92. Statistics for 24 Hour Cumulative Number of Minutes Spent in Yardwork/ Maintenance ( a)

Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 1414 147.69 148.216 3.942 1 1080 5 45 100 205 360 470 570 655 Gender Male 804 174.84 160.191 5.649 2 1080 10 60 120 249.5 415 510 600 670 Gender Female 610 111.91 121.979 4.939 1 900 5 30 75 145 277.5 360 465 510 Age ( years) * 20 181.85 170.345 38.09 5 600 10 60 116 240 467.5 570 600 600 Age ( years) 1 4 12 93.167 80.805 23.326 5 285 5 30 82.5 132.5 178 285 285 285 Age ( years) 5 11 26 96.154 85.532 16.774 5 330 5 39 60 120 210 300 330 330 Age ( years) 12 17 54 116 116.758 15.889 3 505 5 30 90 150 285 385 450 505 Age ( years) 18 64 1015 150.22 154.486 4.849 1 1080 5 35 100 210 360 480 585 670 Age ( years) > 64 287 149.3 133.834 7.9 2 810 10 60 120 205 330 420 525 630 Race White 1249 151.52 150.205 4.25 1 1080 5 45 105 210 360 480 575 660 Race Black 77 114.53 127.124 14.487 2 750 5 20 65 165 285 355 405 750 Race Asian 13 140 150.111 41.633 5 425 5 15 85 210 360 425 425 425 Race Some Others 26 117.23 110.647 21.7 5 380 5 30 88 178 290 360 380 380 Race Hispanic 37 102.11 113.508 18.661 5 565 5 20 60 120 255 300 565 565 Race Refused 12 177.08 190.793 55.077 30 600 30 60 97.5 215 510 600 600 600 Hispanic No 1331 148.69 147.962 4.056 1 1080 5 45 105 209 360 465 570 660 Hispanic Yes 65 106.17 127.4 15.802 5 575 5 20 60 120 255 300 565 575 Hispanic DK 8 248.75 206.48 73.002 5 585 5 90 190 420 585 585 585 585 Hispanic Refused 10 203.5 200.056 63.263 60 600 60 60 120 300 555 600 600 600 Employment * 92 106.82 101.779 10.611 3 505 5 31.5 77 147.5 240 330 450 505 Employment Full Time 664 146.73 155.488 6.034 1 1080 5 35 90 202.5 360 490 575 690 Employment Part Time 121 134.51 130.79 11.89 2 554 5 30 90 200 317 390 490 495 Employment Not Employed 526 157.76 147.022 6.41 2 810 10 60 120 220 370 480 595 655 Employment Refused 11 211.55 198.724 59.918 2 600 2 60 120 375 465 600 600 600 Education * 105 113.47 113.854 11.111 2 600 5 33 79 150 285 360 450 505 Education < High School 160 158.46 164.764 13.026 2 900 7.5 45 111 210 412.5 492.5 595 810 Education High School Graduate 465 151.39 146.985 6.816 3 840 5 50 110 210 345 460 575 690 Education < College 305 152.84 157.011 8.99 2 1080 5 45 95 210 360 473 600 630 Education College Graduate 211 145.36 138.849 9.559 1 625 5 40 105 225 330 465 525 533 Education Post Graduate 168 142.2 147.773 11.401 2 690 5 30 90 180 340 470 570 630 Census Region Northeast 291 140.5 139.641 8.186 3 840 5 40 90 200 330 450 525 600 Census Region Midwest 314 145.1 143.219 8.082 2 780 10 55 95 195 360 445 560 655 Census Region South 438 152.69 156.36 7.471 2 1080 5 45 111 205 375 480 585 635 Census Region West 371 149.63 149.345 7.754 1 750 5 40 104 210 350 480 575 690 Day Of Week Weekday 878 140.86 140.753 4.75 1 810 5 40 92.5 190 345 460 560 625 Day Of Week Weekend 536 158.88 159.193 6.876 2 1080 5 50 116.5 225 380 510 600 690 Season Winter 289 139.35 151.711 8.924 1 690 5 30 75 195 360 480 565 600 Season Spring 438 162.23 150.477 7.19 3 900 10 60 120 220 360 480 570 700 Season Summer 458 137.92 140.291 6.555 2 1080 5 40 90 180 310 440 555 630 Season Fall 229 149.97 153.398 10.137 2 720 5 40 97 210 390 480 600 655 Asthma No 1311 146.95 147.084 4.062 1 1080 5 45 100 200 355 465 570 635 Asthma Yes 98 149.27 155.758 15.734 5 670 5 30 90 210 445 480 670 670 Asthma DK 5 312 230.043 102.879 60 600 60 120 300 480 600 600 600 600 Angina No 1360 145.34 145.05 3.933 1 900 5 45 100 200 355 465 570 655 Angina Yes 42 192.62 203.363 31.38 5 1080 15 60 142.5 255 465 485 1080 1080 Angina DK 12 257.08 216.716 62.56 5 600 5 52.5 232.5 472.5 510 600 600 600 Bronchitis/ Emphysema No 1352 148.48 148.534 4.04 1 1080 5 45 105 205 360 470 570 660 Bronchitis/ Emphysema Yes 57 114.65 121.376 16.077 5 460 5 30 60 135 340 375 405 460 Bronchitis/ Emphysema DK 5 312 230.043 102.879 60 600 60 120 300 480 600 600 600 600 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes.

a Includes car repair services, other repairs services, outdoor cleaning, car repair maintenance, other repairs, plant care, other household work, domestic crafts, domestic arts. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Exposure Factors Handbook Page August 1997 15 109 Table 15 93. Statistics for 24 Hour Cumulative Number of Minutes Spent in Sports/ Exercise ( a) Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 1852 116.322 107.947 2.5084 1 1130 17 45 85 150 253 316 420 515 Gender Male 958 130.669 117.216 3.7871 1 1130 20 55 97.5 175 270 355 475 558 Gender Female 892 100.854 94.795 3.174 1 1065 15 35 65 130 230 285 370 435 Gender Refused 2 142.5 38.891 27.5 115 170 115 115 143 170 170 170 170 170 Age ( years) * 32 102.031 79.32 14.022 5 290 15 40 80 137.5 225 270 290 290 Age ( years) 1 4 114 118.982 109.17 10.2247 10 670 25 45 90 159 250 330 390 630 Age ( years) 5 11 262 153.496 130.58 8.0673 2 975 20 60 120 200 330 415 525 580 Age ( years) 12 17 237 134.717 122.228 7.9396 5 1065 15 60 110 179 265 360 470 520 Age ( years) 18 64 992 109.692 100.801 3.2004 1 1130 20 45 75 145 240 300 405 510 Age ( years) > 64 215 82.051 75.995 5.1828 1 380 10 30 60 110 195 270 310 316 Race White 1541 117.524 110.622 2.818 1 1130 20 45 85 150 255 320 435 525 Race Black 135 110.4 93.06 8.0094 5 440 15 45 85 150 220 340 430 435 Race Asian 37 85.432 73.897 12.1486 5 310 10 30 60 95 210 235 310 310 Race Some Others 47 124.702 106.397 15.5196 15 553 30 40 85 180 270 325 553 553 Race Hispanic 74 108.892 89.177 10.3667 1 520 15 45 90 145 225 270 345 520 Race Refused 18 130 111.698 26.3275 30 420 30 60 82.5 140 300 420 420 420 Hispanic No 1678 116.451 108.276 2.6432 1 1130 17 45 85 150 253 316 430 510 Hispanic Yes 151 115.583 106.428 8.661 1 630 15 45 90 145 240 325 415 553 Hispanic DK 7 92.857 62.773 23.726 20 185 20 30 75 145 185 185 185 185 Hispanic Refused 16 120 110 27.5 30 420 30 60 70 122.5 290 420 420 420 Employment * 606 138.658 123.665 5.0235 2 1065 20 60 110 180 285 375 470 580 Employment Full Time 644 102.315 94.146 3.7099 5 1130 20 45 67.5 130 225 280 360 405 Employment Part Time 125 115.272 91.33 8.1688 1 450 15 45 90 160 220 300 420 420 Employment Not Employed 465 107.239 104.105 4.8277 1 600 10 31 70 135 250 310 462 515 Employment Refused 12 102.917 87.917 25.3794 30 280 30 40 75 130 270 280 280 280 Education * 663 139.46 123.813 4.8085 2 1065 20 60 110 180 285 383 510 580 Education < High School 103 96.243 97.046 9.5622 10 570 15 30 60 135 210 270 305 510 Education High School Graduate 341 109.276 106.483 5.7664 1 1130 15 40 75 150 235 285 405 485 Education < College 265 110.068 94.836 5.8257 1 525 17 45 80 145 240 305 418 475 Education College Graduate 258 105.717 92.204 5.7404 1 600 20 45 70 130 240 297 343 450 Education Post Graduate 222 87.149 79.704 5.3494 5 375 15 30 60 105 208 290 355 360 Census Region Northeast 437 126.865 122.905 5.8793 1 1130 15 50 95 165 270 338 470 558 Census Region Midwest 341 105.889 94.38 5.111 5 570 20 40 75 135 240 280 430 438 Census Region South 627 112.774 104.846 4.1872 1 975 15 45 80 150 250 313 410 462 Census Region West 447 118.951 105.629 4.9961 4 670 22 48 85 160 250 325 475 525 Day Of Week Weekday 1264 107.154 94.026 2.6447 1 670 15 45 75 140 235 285 375 485 Day Of Week Weekend 588 136.029 130.966 5.401 1 1130 20 51.5 90 180 297 380 462 558 Season Winter 448 104.094 104.108 4.9187 1 1065 15 40 70 130 230 280 360 420 Season Spring 533 123.452 100.904 4.3706 5 650 25 60 90 162 267 330 420 500 Season Summer 579 125.988 114.358 4.7525 1 670 15 45 90 160 283 360 470 545 Season Fall 292 102.901 110.416 6.4616 4 1130 15 40 60 127.5 225 275 460 565 Asthma No 1699 114.927 105.239 2.5532 1 1130 17 45 85 150 250 310 420 510 Asthma Yes 137 132.131 134.238 11.4687 1 1065 15 60 90 165 265 390 553 565 Asthma DK 16 129.063 134.786 33.6966 10 450 10 60 60 152.5 420 450 450 450 Angina No 1801 117.3 108.373 2.5537 1 1130 20 45 89 150 254 316 430 515 Angina Yes 40 68 70.942 11.217 5 330 5.5 30 47.5 60 172.5 235 330 330 Angina DK 11 131.818 116.023 34.9823 40 420 40 60 90 155 270 420 420 420 Bronchitis/ Emphysema No 1782 116.226 107.987 2.5581 1 1130 17 45 85 150 250 315 430 515 Bronchitis/ Emphysema Yes 56 119.429 108.516 14.501 10 553 20 42.5 75 172.5 270 340 410 553 Bronchitis/ Emphysema DK 14 116.071 108.187 28.9143 15 420 15 60 85 140 270 420 420 420 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes.

a Includes active sports, exercise, hobbies. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 110 August 1997 Table 15 94. Statistics for 24 Hour Cumulative Number of Minutes Eating or Drinking Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 8627 74.8821 54.8419 0.5904 1 900 15 35 60 96 140 175 215 270 Gender Male 3979 75.8316 56.2313 0.8914 1 900 15 39 60 96 140 180 210 270 Gender Female 4644 74.0814 53.6353 0.7871 2 640 15 34 60 98 140 170 225 270 Gender Refused 4 60 21.2132 10.6066 30 75 30 45 67.5 75 75 75 75 75 Age ( years) * 157 75.3248 50.1255 4.0005 10 315 15 30 65 100 145 150 195 285 Age ( years) 1 4 492 93.4837 52.8671 2.3834 2 345 20 60 90 120 160 190 225 270 Age ( years) 5 11 680 68.5412 38.9518 1.4937 5 255 15 40 65 90 120 142.5 165 195 Age ( years) 12 17 538 55.8587 34.9903 1.5085 2 210 10 30 50 75 105 125 150 170 Age ( years) 18 64 5464 71.8673 55.1199 0.7457 1 900 15 30 60 90 135 170 220 270 Age ( years) > 64 1296 91.7014 62.6665 1.7407 5 750 20 50 80 120 165 200 270 295 Race White 7049 77.0058 55.6564 0.6629 1 900 15 40 64 100 145 180 225 270 Race Black 808 59.9047 46.5954 1.6392 2 505 15 30 50 75 119 140 200 225 Race Asian 148 80.4054 47.8283 3.9315 2 305 15 45 72.5 106.5 150 160 200 200 Race Some Others 168 66.0417 52.0928 4.019 7 525 15 30 59.5 83 120 135 190 200 Race Hispanic 345 68.7043 51.8926 2.7938 2 435 12 30 60 90 125 165 195 225 Race Refused 109 74.2477 60.8473 5.8281 8 410 20 30 60 90 130 180 290 315 Hispanic No 7861 75.5599 55.2306 0.6229 1 900 15 35 60 100 140 175 220 270 Hispanic Yes 639 68.2754 50.1994 1.9859 2 435 15 30 60 90 120 155 195 225 Hispanic DK 41 60.4146 37.1039 5.7947 5 150 15 30 55 90 120 130 150 150 Hispanic Refused 86 68.9186 55.4732 5.9818 8 410 15 30 60 90 115 155 210 410 Employment * 1695 72.2083 44.9086 1.0908 2 345 15 40 65 90 133 150 195 210 Employment Full Time 3684 70.6097 55.0998 0.9078 1 900 15 30 60 90 135 165 225 270 Employment Part Time 715 72.2112 55.4476 2.0736 2 509 15 30 60 90 135 170 230 260 Employment Not Employed 2472 83.9498 59.1281 1.1892 2 750 15 45 75 110 150 185 235 285 Employment Refused 61 71.0492 60.9843 7.8082 8 385 15 30 55 90 120 145 235 385 Education * 1867 70.85 45.3955 1.0506 2 375 15 38 60 90 130 150 190 210 Education < High School 758 72.3206 57.4352 2.0861 2 460 15 30 60 90 135 180 230 315 Education High School Graduate 2363 74.8565 57.1005 1.1746 1 900 15 35 60 96 140 175 220 270 Education < College 1612 73.9237 56.5324 1.408 2 525 15 30 60 90 145 175 230 275 Education College Graduate 1160 78.4991 55.4196 1.6272 1 640 15 40 65 105 145 180 220 265 Education Post Graduate 867 82.8166 59.6871 2.0271 2 750 15 40 70 110 150 185 240 270 Census Region Northeast 1916 78.2766 59.1627 1.3516 1 750 15 37 65 102.5 145 180 240 285 Census Region Midwest 1928 75.8117 51.3702 1.1699 1 435 15 40 64 100 140 175 210 255 Census Region South 2960 71.3916 55.0903 1.0126 2 900 15 30 60 90 135 165 210 270 Census Region West 1823 75.9989 52.9755 1.2407 2 500 15 35 60 100 150 180 210 240 Day Of Week Weekday 5813 71.2069 52.0446 0.6826 1 900 15 33 60 90 130 165 210 250 Day Of Week Weekend 2814 82.4741 59.5052 1.1217 2 630 15 40 70 110 150 190 240 297 Season Winter 2332 76.0931 56.4379 1.1687 2 640 15 38.5 65 95.5 140 175 240 275 Season Spring 2222 76.3096 55.207 1.1712 1 630 15 35 60 100 145 178 220 275 Season Summer 2352 73.4787 53.2506 1.098 1 750 15 35 60 95 135 170 210 260 Season Fall 1721 73.3161 54.2737 1.3083 2 900 15 30 60 95 140 175 210 232 Asthma No 7937 75.2016 54.8093 0.6152 1 900 15 35 60 100 140 175 215 270 Asthma Yes 635 71.3732 55.0353 2.184 2 460 15 30 60 90 133 170 225 285 Asthma DK 55 69.2909 56.5874 7.6302 8 335 15 30 60 90 120 210 215 335 Angina No 8318 74.5795 54.4372 0.5969 1 900 15 35 60 95 140 175 210 265 Angina Yes 243 85.0288 63.5335 4.0757 2 500 15 45 75 115 160 180 285 330 Angina DK 66 75.6667 67.304 8.2845 5 435 15 30 60 90 150 195 215 435 Bronchitis/ Emphysema No 8169 74.6605 54.3234 0.601 1 900 15 35 60 95 140 170 210 260 Bronchitis/ Emphysema Yes 397 80.6599 65.2442 3.2745 2 460 15 30 60 110 150 180 285 360 Bronchitis/ Emphysema DK 61 66.9508 47.7188 6.1098 8 230 15 30 60 90 120 155 215 230 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Exposure Factors Handbook Page August 1997 15 111 Table 15 95. Statistics for 24 Hour Cumulative Number of Minutes Spent Indoors at an Auto Repair Shop/ Gas Station Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 153 190.693 234.506 18.959 1 930 5 15 60 360 565 645 695 748 Gender Male 105 241.476 250.274 24.424 2 930 5 15 115 495 600 675 700 748 Gender Female 48 79.604 144.512 20.858 1 595 3 10 15 70 295 485 595 595 Age ( years) * 3 161.667 115.578 66.729 90 295 90 90 100 295 295 295 295 295 Age ( years) 1 4 4 40 50.166 25.083 10 115 10 12.5 17.5 67.5 115 115 115 115 Age ( years) 5 11 5 22 21.679 9.695 5 60 5 15 15 15 60 60 60 60 Age ( years) 12 17 7 153.857 205.069 77.509 3 505 3 5 55 390 505 505 505 505 Age ( years) 18 64 118 223.847 249.335 22.953 1 930 5 15 75 480 600 675 700 748 Age ( years) > 64 16 58.125 96.889 24.222 2 358 2 15 20 42.5 225 358 358 358 Race White 130 195.538 237.537 20.833 1 930 5 15 60 390 587.5 645 700 748 Race Black 12 149.667 203.31 58.691 2 565 2 6.5 75 229 495 565 565 565 Race Asian 5 173 231.236 103.412 5 525 5 15 25 295 525 525 525 525 Race Some Others 3 15 10 5.774 5 25 5 5 15 25 25 25 25 25 Race Hispanic 3 350 330.114 190.591 15 675 15 15 360 675 675 675 675 675 Hispanic No 148 188.926 233.749 19.214 1 930 5 15 60 369.5 565 630 700 748 Hispanic Yes 5 243 279.701 125.086 15 675 15 15 150 360 675 675 675 675 Employment * 16 84.188 146.714 36.678 3 505 3 12.5 17.5 69.5 390 505 505 505 Employment Full Time 84 283.571 263.755 28.778 3 930 5 17.5 230 540 630 680 748 930 Employment Part Time 16 104.188 147.369 36.842 5 390 5 12.5 17.5 187.5 359 390 390 390 Employment Not Employed 35 65.914 94.745 16.015 1 432 2 15 30 90 160 358 432 432 Employment Refused 2 17.5 17.678 12.5 5 30 5 5 17.5 30 30 30 30 30 Education * 18 95.056 153.879 36.27 3 505 3 10 17.5 79 390 505 505 505 Education < High School 16 327.188 301.181 75.295 5 930 5 60 278 615 675 930 930 930 Education High School Graduate 51 233.353 243.089 34.039 2 748 5 20 120 480 565 675 695 748 Education < College 32 253.469 252.8 44.689 2 700 5 15 157 517.5 595 680 700 700 Education College Graduate 19 72.895 126.321 28.98 1 508 1 5 20 90 295 508 508 508 Education Post Graduate 17 49 73.388 17.799 5 235 5 10 15 35 225 235 235 235 Census Region Northeast 29 247.31 257.069 47.737 2 930 3 30 120 432 600 748 930 930 Census Region Midwest 48 230.896 251.622 36.318 1 700 5 17.5 74.5 510 600 680 700 700 Census Region South 43 165.721 211.591 32.267 3 675 5 15 50 358 555 595 675 675 Census Region West 33 115 198.907 34.625 5 675 5 10 15 100 505 645 675 675 Day Of Week Weekday 121 204.645 244.861 22.26 1 930 5 15 60 390 595 675 700 748 Day Of Week Weekend 32 137.938 184.175 32.558 2 540 3 15 40 200 505 510 540 540 Season Winter 28 177.143 258.088 48.774 2 930 5 15 30 355 595 700 930 930 Season Spring 44 189.636 223.267 33.659 2 645 5 15 79.5 384.5 565 600 645 645 Season Summer 52 171.692 223.809 31.037 1 680 3 10 30 347.5 540 675 675 680 Season Fall 29 239.448 251.391 46.682 5 748 8 35 95 445 605 695 748 748 Asthma No 145 191.29 235.288 19.54 1 930 5 15 60 360 565 645 700 748 Asthma Yes 8 179.875 234.838 83.028 5 600 5 5 37.5 374.5 600 600 600 600 Angina No 149 191.047 235.262 19.273 1 930 5 15 60 360 585 645 700 748 Angina Yes 4 177.5 235.744 117.872 5 510 5 10 97.5 345 510 510 510 510 Bronchitis/ Emphysema No 146 189.048 234.959 19.445 1 930 5 15 57.5 360 585 645 700 748 Bronchitis/ Emphysema Yes 7 225 239.948 90.692 5 555 5 5 95 510 555 555 555 555 Note: A "*" Signifies missing data. Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 112 August 1997 Table 15 96. Statistics for 24 Hour Cumulative Numbr of Minutes Spent Indoors at a Gym/ Health Club Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 364 129.651 104.343 5.4691 5 686 30 60 110 155 240 320 525 600 Gender Male 176 147.193 115.554 8.7102 5 686 30 77.5 120 175 285 360 533 660 Gender Female 188 113.229 89.876 6.5549 5 660 30 60 92.5 135 200 279 420 560 Age ( years) * 6 202.5 227.854 93.0211 30 560 30 55 75 420 560 560 560 560 Age ( years) 1 4 5 156 29.875 13.3604 105 180 105 160 160 175 180 180 180 180 Age ( years) 5 11 28 105.286 69.537 13.1413 5 325 30 58 82.5 141 165 270 325 325 Age ( years) 12 17 39 165.385 122.056 19.5447 15 660 30 90 138 206 330 440 660 660 Age ( years) 18 64 254 123.134 98.827 6.2009 5 686 30 60 100 150 210 295 475 600 Age ( years) > 64 32 141.375 114.216 20.1907 10 533 30 60 103 173 292 340 533 533 Race White 307 134.261 109.36 6.2415 5 686 30 65 110 164 255 330 533 600 Race Black 30 117.7 75.418 13.7693 5 320 10 60 115 145 235 285 320 320 Race Asian 10 75.2 36.484 11.5372 30 145 30 54 60 95 133 145 145 145 Race Some Others 11 112.909 69.077 20.8276 25 270 25 65 90 153 179 270 270 270 Race Hispanic 4 83.75 42.696 21.3478 40 140 40 52.5 77.5 115 140 140 140 140 Race Refused 2 57.5 3.536 2.5 55 60 55 55 57.5 60 60 60 60 60 Hispanic No 345 132.017 105.901 5.7015 5 686 30 65 110 160 240 325 533 600 Hispanic Yes 17 90.118 58.765 14.2527 5 255 5 60 90 115 140 255 255 255 Hispanic Refused 2 57.5 3.536 2.5 55 60 55 55 57.5 60 60 60 60 60 Employment * 72 139.625 103.274 12.171 5 660 30 76 120 165 265 330 440 660 Employment Full Time 176 131.193 112.511 8.4808 5 686 30 60 110 150 240 330 560 660 Employment Part Time 40 129.25 92.836 14.6787 25 420 35 60 95 168 285 325 420 420 Employment Not Employed 75 117.867 91.345 10.5477 5 533 25 60 90 145 230 285 475 533 Employment Refused 1 40 * * 40 40 40 40 40 40 40 40 40 40 Education * 81 136.877 99.66 11.0733 5 660 30 75 120 164 215 325 440 660 Education < High School 9 110.556 97.706 32.5688 10 300 10 30 80 165 300 300 300 300 Education High School Graduate 61 128.475 110.005 14.0847 5 660 25 75 105 145 210 310 525 660 Education < College 71 145.634 129.073 15.3181 5 600 35 65 110 170 285 533 560 600 Education College Graduate 81 121.975 99.467 11.0519 15 686 30 60 98 135 220 285 420 686 Education Post Graduate 61 115.639 76.916 9.8481 10 415 40 60 90 145 225 265 320 415 Census Region Northeast 83 140.53 107.244 11.7716 20 660 40 70 120 170 240 330 600 660 Census Region Midwest 62 127 88.661 11.26 5 440 25 60 113 170 285 300 340 440 Census Region South 118 125.669 107.038 9.8537 5 660 15 60 105 150 240 330 533 540 Census Region West 101 126.99 108.452 10.7914 5 686 50 60 92 135 225 292 525 560 Day Of Week Weekday 281 121.26 96.577 5.7613 5 686 30 60 98 145 210 295 475 560 Day Of Week Weekend 83 158.06 123.652 13.5726 5 660 30 77 120 180 285 415 600 660 Season Winter 127 139.795 108.258 9.6063 5 686 25 75 120 177 240 330 533 660 Season Spring 85 141.459 115.229 12.4983 10 600 30 65 102 164 285 340 560 600 Season Summer 81 109.864 87.411 9.7123 5 525 30 60 90 130 160 310 440 525 Season Fall 71 119.944 98.963 11.7447 20 660 30 56 98 150 215 295 420 660 Asthma No 333 132.39 106.796 5.8524 5 686 30 62 110 160 255 325 533 600 Asthma Yes 28 100.071 69.387 13.113 5 330 25 60 86 118 210 230 330 330 Asthma DK 3 101.667 55.752 32.1887 60 165 60 60 80 165 165 165 165 165 Angina No 357 130.499 104.98 5.5561 5 686 30 62 110 155 240 325 525 600 Angina Yes 4 90 47.61 23.8048 60 160 60 60 70 120 160 160 160 160 Angina DK 3 81.667 65.256 37.6755 30 155 30 30 60 155 155 155 155 155 Bronchitis/ Emphysema No 352 130.696 104.843 5.5882 5 686 30 61 110 158 240 320 525 600 Bronchitis/ Emphysema Yes 10 97.3 92.848 29.361 10 330 10 45 76.5 120 245 330 330 330 Bronchitis/ Emphysema DK 2 107.5 67.175 47.5 60 155 60 60 108 155 155 155 155 155 Note: A "*" Signifies missing data. " DK" = The respondent replied " don't know". Refused = Refused data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Exposure Factors Handbook Page August 1997 15 113 Table 15 97. Statistics for 24 Hour Cumulative Number of Minutes Spent Indoors at the Laundromat Percentiles Category Population Group N Mean Stdev Stderr Min Max 5 25 50 75 90 95 98 99 All 40 99.275 85.209 13.4727 2 500 5 54.5 91 120 153 238 500 500 Gender Male 9 150.222 146.822 48.9407 2 500 2 115 120 150 500 500 500 500 Gender Female 31 84.484 51.822 9.3075 5 265 5 50 80 115 137 155 265 265 Age ( years) 5 11 3 80.667 17.926 10.3494 60 92 60 60 90 92 92 92 92 92 Age ( years) 18 64 33 101.182 91.724 15.967 2 500 5 50 90 120 155 265 500 500 Age ( years) > 64 4 97.5 63.574 31.7871 5 150 5 60 118 135 150 150 150 150 Race White 31 102.161 93.832 16.8527 2 500 5 50 90 120 155 265 500 500 Race Black 6 75.667 50.306 20.5372 5 130 5 34 85 115 130 130 130 130 Race Hispanic 3 116.667 30.551 17.6383 90 150 90 90 110 150 150 150 150 150 Hispanic No 37 97.865 88.241 14.5068 2 500 5 50 90 120 155 265 500 500 Hispanic Yes 3 116.667 30.551 17.6383 90 150 90 90 110 150 150 150 150 150 Employment * 3 80.667 17.926 10.3494 60 92 60 60 90 92 92 92 92 92 Employment Full Time 20 97.6 104.739 23.4203 2 500 4 42 83.5 115 143 328 500 500 Employment Part Time 4 127.5 91.879 45.9393 75 265 75 77.5 85 178 265 265 265 265 Employment Not Employed 13 97.462 60.852 16.8772 5 210 5 45 115 137 150 210 210 210 Education * 3 80.667 17.926 10.3494 60 92 60 60 90 92 92 92 92 92 Education < High School 6 95 53.292 21.7562 5 150 5 60 113 130 150 150 150 150 Education High School Graduate 17 101.353 64.434 15.6275 5 265 5 59 90 120 210 265 265 265 Education < College 6 91.5 56.387 23.0199 10 155 10 34 115 120 155 155 155 155 Education College Graduate 7 126.429 168.219 63.5808 5 500 5 45 70 110 500 500 500 500 Education Post Graduate 1 2 * * 2 2 2 2 2 2 2 2 2 2 Census Region Northeast 6 168.667 166.465 67.9591 45 500 45 75 126 140 500 500 500 500 Census Region Midwest 8 94 60.328 21.3291 5 210 5 57.5 93.5 118 210 210 210 210 Census Region South 18 85.944 61.82 14.5711 2 265 2 50 76 115 155 265 265 265 Census Region West 8 82.5 52.915 18.7083 5 150 5 35 100 118 150 150 150 150 Day Of Week Weekday 25 103.32 100.663 20.1326 2 500 5 50 90 115 155 265 500 500 Day Of Week Weekend 15 92.533 52.697 13.6063 10 210 10 60 92 130 150 210 210 210 Season Winter 11 86.455 57.98 17.4816 2 210 2 45 80 120 140 210 210 210 Season Spring 12 85.583 71.678 20.6916 5 265 5 35 73.5 120 130 265 265 265 Season Summer 12 118.667 125.78 36.3096 5 500 5 55 101 113 137 500 500 500 Season Fall 5 113.8 48.422 21.655 34 155 34 115 115 150 155 155 155 155 Asthma No 37 95.459 83.88 13.7897 2 500 5 50 90 120 150 210 500 500 Asthma Yes 3 146.333 106.514 61.4962 59 265 59 59 115 265 265 265 265 265 Angina No 40 99.275 85.209 13.4727 2 500 5 54.5 91 120 153 238 500 500 Bronchitis/ Emphysema No 35 92.314 84.343 14.2565 2 500 5 50 90 115 130 210 500 500 Bronchitis/ Emphysema Yes 5 148 83.262 37.2357 30 265 30 140 150 155 265 265 265 265 Note: A "*" Signifies missing data. N = doer sample size. Mean = Mean 24 hour cumulative number of minutes for doers. Stdev = standard deviation. Stderr = standard error. Min = minimum number of minutes. Max = maximum number of minutes. Percentiles are the percentage of doers below or equal to a given number of minutes. Source: Tsang and Klepeis, 1996. Volume III  Activity Factors Chapter 15  Activity Factors Page Exposure Factors Handbook 15 114 August 1997 Table 15 98. Statistics for 24 Hour Cumulative Number of Minutes Spent Indoors at Work ( non specific)


[Federal Register: October 17, 2008 (Volume 73, Number 202)]
[Notices]
[Page 61928-61929]
[DOCID:fr17oc08-158]

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DEPARTMENT OF TRANSPORTATION

Pipeline and Hazardous Materials Safety Administration

Office of Hazardous Materials Safety; Notice of Applications for
Modification of Special Permit

AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA),
DOT.

ACTION: List of Applications for Modification of Special Permit.

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SUMMARY: In accordance with the procedures governing the application
for, and the processing of, special permits from the Department of
Transportation's Hazardous Material Regulations (49 CFR part 107,
subpart B), notice is hereby given that the Office of Hazardous
Materials Safety has received the application described herein. This
notice is abbreviated to expedite docketing and public notice. Because
the sections affected, modes of transportation, and the nature of
application have been shown in earlier Federal Register publications,
they are not repeated here. Request of modifications of special permits
(e.g. to provide for additional hazardous materials, packaging design
changes, additional mode of transportation, etc.) are described in
footnotes to the application number. Application numbers with the
suffix ``M'' demote a modification request. There applications have
been separated from the new application for special permits to
facilitate processing.

DATES: Comments must be received on or before November 3, 2008.
    Address Comments To: Record Center, Pipeline and Hazardous
Materials, Safety Administration, U.S. Department of Transportation,
Washington, DC 20590.
    Comments should refer to the application number and be submitted in
triplicate. If confirmation of receipt of comments is desired, include
a self-addressed stamped postcard showing the special permit number.

FOR FURTHER INFORMATION CONTACT: Copies of the applications are
available for inspection in the Records Center, East Building, PHH-30,
1200 New Jersey Avenue, SE., Washington DC or at http://dms.dot.gov.
    This notice of receipt of applications for modification of special
permit is published in accordance with Part 107 of the Federal
hazardous materials transportation law (49 U.S.C. 5117(b); 49 CFR
1.53(b)).

    Issued in Washington, DC, on October 9, 2008.
Delmer F. Billings,
Director, Office of Hazardous Materials, Special Permits and Approvals.

                                          Modification Special Permits
----------------------------------------------------------------------------------------------------------------
                                                                                Nature of special permit
    Application No.       Docket No.         Applicant        Regulation(s) affected            thereof
----------------------------------------------------------------------------------------------------------------
6614-M.................  ...........  Auto-Chlor System,      49 CFR 173.202;         To modify the special
                                       Memphis, TN.            173.203.                permit to authorize the
                                                                                transportation in
                                                                                commerce of an additional
                                                                                Class 8 material in non-
                                                                                DOT specification
                                                                                polyethylene bottles
                                                                                placed in a polyethylene
                                                                                crate.
8006-M.................  ...........  JA-RU, Inc.,            49 CFR 172.400(a);      To modify the special
                                       Jacksonville, FL.       172.504 Table 2;        permit to authorize the
                                                               172.101;                transportation in
                                                               172.202(a)(3);          commerce of certain toy
                                                               172.301(a).             caps by JaRu customers
                                                                                between their
                                                                                distribution centers and
                                                                                their retail stores
                                                                                without meeting the
                                                                                marking and packaging
                                                                                requirements.
8215-M.................  ...........  Olin Corporation,       49 CFR Part 172,        To modifly the special
                                       Winchester Division     Subpart E; 172.320;     permit to add a specially
                                       (Former Grantee: Olin   173.62(c); 173.212;     designed truck to haul
                                       Corporation, Brass      172.504(e).             hazardous materials.
                                       and Winchester, Inc.)
                                       East Alton, IL.
12102-M................  ...........  Veolia ES Technical     49 CFR 173.56(i);       To modify the special
                                       Solutions, L.L.C.,      173.56(b).              permit to authorize the
                                       Flanders, NJ.                                   transportation in
                                                                                commercie of an
                                                                                additional Class 3 and
                                                                                Division 4.1 hazardous
                                                                                material.
12690-M................  ...........  Air Products &          49 CFR 173.304(a)(2),   To modify the special
                                       Chemicals, Inc.,        Note 2.                 permit to authorize
                                       Allentown, PA.                                  ultrasonic testing of
                                                                                cylinders and to add a
                                                                                drawing.
14158-M................  ...........  UTC Power Corporation,  49 CFR 176.83.........  To modify the special
                                       South Windsor, CT.                              permit to authorize more
                                                                                than one package of a
                                                                                Division 4.2 solid in the
                                                                                same assembly unit with
                                                                                more than one package of
                                                                                Class 8 liquids.

14287-M................  ...........  Troxler Electronic      49 CFR 173.431........  To modify the special
                                       Laboratories, Inc.,                             permit to authorize an
                                       Research Triangle                               additional source capsule
                                       Park, NC.                                       model number.
14715-M................  ...........  The Linde Group,        49 CFR 173.301(d)(2);   To reissue the special
                                       Murray Hill, NJ.        173.302(a)(3); 178.37-  permit originally issued
                                                               5.                      on an emergency basis for
                                                                                the transportation in
                                                                                commerce of DOT
                                                                                Specification 3AAX
                                                                                cylinders made of 4130X
                                                                                steel for transportation
                                                                                of a compressed natural
                                                                                gas.
14732-M................  ...........  Johnson Controls        49 CFR 173.306(e)(1)..  To reissue the special
                                       Rental Solutions,                               permit originally issued
                                       Indianapolis, IN.                               on the emergency basis
                                                                                for transportation in
                                                                                commerce of reconditioned
                                                                                (used) refrigerating
                                                                                machines containing a
                                                                                group A1 refrigerant by
                                                                                motor vehicle.
----------------------------------------------------------------------------------------------------------------

[FR Doc. E8-24617 Filed 10-16-08; 8:45 am]

BILLING CODE 4909-60-M


[Federal Register Volume 77, Number 232 (Monday, December 3, 2012)]
[Notices]
[Pages 71607-71608]
[FR Doc No: 2012-29138]

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DEPARTMENT OF HOMELAND SECURITY

Coast Guard

[Docket No. USCG-2012-0839]

Mobile Offshore Drilling Unit (MODU) Electrical Equipment
Certification Guidance

AGENCY: Coast Guard, DHS.

ACTION: Notice of policy.

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SUMMARY: The Coast Guard is providing guidance regarding electrical
equipment installed in hazardous areas on foreign-flagged Mobile
Offshore Drilling Units (MODUs) that have never operated, but intend to
operate, on the U.S. Outer Continental Shelf (OCS). Chapter 6 of the
2009 version of the International Maritime Organization (IMO) Code for
the Construction and Equipment of Mobile Offshore Drilling Units (2009
IMO MODU Code) sets forth standards for testing and certifying
electrical equipment installations on MODUs. The Coast Guard is
considering issuing a rule that will implement Chapter 6 of the 2009
IMO MODU Code and that will be applicable to foreign-flagged MODUs that
have never operated, but intend to operate, on the U.S. OCS. In the
interim, the Coast Guard recommends that owners and operators of
foreign-flagged MODUs that have never operated, but intend to operate
on the U.S. OCS, voluntarily comply with Chapter 6 of the 2009 IMO MODU
Code.

DATES: The policy outlined in this document is effective December 3,
2012.

ADDRESSES: The documents referenced in this notice and published by the
International Maritime Organization, International Electrotechnical
Commission, or International Organization for Standardization are
available for purchase from the publishers. For more information on
where to obtain copies these documents, please call or email the Coast
Guard point of contact listed in the FOR FURTHER INFORMATION CONTACT
section below.

FOR FURTHER INFORMATION CONTACT: If you have questions on this notice
or the policy, call or email Mr. Rodolfo Sierra, Systems Engineering
Division (CG-ENG-3),<PHONE_NUMBER><EMAIL_ADDRESS>If you
have questions on viewing material in the docket, call Renee V. Wright,
Program Manager, Docket Operations, telephone<PHONE_NUMBER>.

SUPPLEMENTARY INFORMATION:

Background

    The explosion and fire on the MODU DEEPWATER HORIZON underscored
the need to address electrical equipment that may present an ignition
source for gases or vapors encountered during oil drilling exploration.
On September 9, 2011 the Coast Guard published the final action memo
(FAM) by the Commandant on the recommendations of its investigation
into the explosion, fire, sinking and loss of eleven crew members on
the MODU DEEPWATER HORIZON. You may view a copy of the FAM online by
going to the Coast Guard's Web site at http://uscg.mil/hq/cg5/cg545 and
clicking on the Deepwater Horizon-exhibits-transcripts-video link. The
FAM called for the Coast Guard to evaluate whether MODUs engaged in
U.S. OCS activities should be subject to independent testing and
certification of electrical equipment installations in hazardous areas.
Chapter 6 of the 2009 IMO MODU Code includes this independent testing
and certification standard for electrical equipment installations in
hazardous areas. However, under current Coast Guard regulations for
foreign MODUs (33 CFR 143.207), the Coast Guard accepts the 1979 IMO
MODU Code, which provides foreign flag Administrations the flexibility
to accept less stringent standards than the 2009 IMO MODU Code,
relating to the testing and certification of electrical equipment
installations in hazardous areas. The Coast Guard completed its
evaluation and has determined that U.S. implementation of the stricter
standards contained in Chapter 6 of the 2009 IMO MODU Code is
warranted.
    The 2009 IMO MODU Code recommends that electrical installations in
hazardous areas be tested and certified in accordance with the
International Electrotechnical Commission (IEC) 60079 series of
standard(s). The IEC offers an international certification system
called the ``Certification to Standards Relating to Equipment for use
in Explosive Atmospheres'' (IECEx). The IECEx system requires full
compliance with the applicable IEC 60079 series of standard(s),
including the testing of equipment by an independent laboratory.
Approval under the IECEx system involves an explosive atmospheres (Ex)
Certification Body (ExCB) and an Ex Testing Laboratory (ExTL) that have
been accepted into the IECEx system after meeting competency
requirements established by the International Organization for
Standardization (ISO)/IEC Standard 17025 and related IECEx Operational

Documents and Rules of Procedure. The Ex Testing Laboratory tests the
covered equipment to determine compliance with the IECEx system of
standards, and drafts an IECEx Test Report (ExTR) to document the test
results. The ExCB reviews the manufacturing quality assurance process
and issues an IECEx Quality Assessment Report (QAR). Based on the
results contained in the QAR and ExTR, the ExCB may then issue an IECEx
Certificate of Conformity for the equipment.
    Currently, some foreign flag Administrations do not impose the IEC
60079 series of standards, and instead accept certification under the
European Commission Directive (94/9/EC) on Equipment and Protective
Systems Intended for use in Potentially Explosive Atmospheres (ATEX
Directive). Compliance with the ATEX Directive is mandatory for
European Union member nations. The ATEX Directive is intended to ensure
the certification of electrical equipment to the Essential Health and
Safety Requirements given in the Directive or appropriate IEC
harmonized standards, but it does not specifically require testing and
certification by an independent third party lab.
    The Coast Guard believes that certification of electrical equipment
intended for use in hazardous areas should be tested and certified by a
competent independent laboratory in the manner prescribed by Chapter 6
of the 2009 IMO MODU Code. Accordingly, the Coast Guard is considering
issuing a rule to address certification and testing requirements for
electrical equipment installations in hazardous areas applicable to
foreign-flagged MODUs that have never operated, but intend to operate,
on the U.S. OCS. Until the Coast Guard finalizes its regulations, the
Coast Guard recommends that owners and operators of foreign-flagged
MODUs that have never operated, but intend to operate, on the U.S. OCS
voluntarily comply with Chapter 6 of the 2009 IMO MODU Code. For these
foreign-flagged MODUs, the Coast Guard recommends that electrical
equipment installations in hazardous areas obtain independent
laboratory certification under the IECEx system, which includes the
appropriate IECEx Certificate of Conformities.
    The guidance contained in this notice is not a substitute for
applicable legal requirements, nor is it itself a regulation. It is not
intended to nor does it impose legally binding requirements on any
party. It represents the Coast Guard's current thinking on this topic
and may assist industry, mariners, the general public, and the Coast
Guard, as well as other Federal and State regulators, in applying
statutory and regulatory requirements. You can use an alternative
approach if the approach satisfies the requirements of the applicable
statutes and regulations.

Authority

    This notice is issued under the authority of 5 U.S.C. 552(a), 43
U.S.C. 1331, et seq., and 33 CFR 1.05-1.

    Dated: September 14, 2012.
J.G. Lantz,
Director of Commercial Regulations and Standards, U.S. Coast Guard.
[FR Doc. 2012-29138 Filed 11-30-12; 8:45 am]
BILLING CODE 9110-04-P