Regulations last checked for updates: May 14, 2025

Title 40 - Protection of Environment last revised: Apr 14, 2028
Appendix Appendix E - Appendix E to Part 1037—Power Take-Off Utility Factors
Time
(min)
Utility
factor
fraction
00
100.1
200.18
300.24
400.31
500.36
600.4
700.44
800.47
900.51
1000.54
1100.57
1200.6
1300.64
1400.66
1500.69
1600.71
1700.74
1800.76
1900.77
2000.79
2100.8
2200.82
2300.83
2400.85
2500.86
2600.87
2700.88
2800.88
2900.89
3000.9
3100.9
3200.91
3300.92
3400.93
3500.93
3600.94
3700.95
3800.95
3900.96
4200.96
4300.97
4600.97
4700.98
5200.98
5300.99
5800.99
5901
[81 FR 74048, Oct. 25, 2016. Redesignated at 88 FR 4658, Jan. 24, 2023]
authority: 42 U.S.C. 7401—7671q
source: 81 FR 74048, Oct. 25, 2016, unless otherwise noted.