Ill. Admin. Code tit. 32, § 315.TABLE D – Limiting Apertures for Hazards Evaluation and AEL Determination

Spectral Region (μm)	Duration (s)	Aperture Diameter (mm)
Eye	Skin
0.180 to 0.400	10^-9to 0.25	1.0	3.5
	0.25 to 3 x 10⁴	3.5	3.5
0.400 to 1.400	10^-9 to 3 x 10⁴	7.0	3.5
1.400 to 10²	10^-9 to 0.3	1.0	3.5
	0.3 to 10	1.5 t^3/8	3.5
	10 to 3 x 10⁴	3.5	3.5
10² to 10³	10^-9 to 3 x 10⁴	11.0	11.0

NOTES:	1.	Under normal conditions these exposure durations would not be used for hazard evaluation (see ANSI Z136.1 (Table 8)).
	2.	For purposes of this Section 315.Table D, the following abbreviations or symbols are used:
	μm	=	micrometers
	s	=	seconds
	mm	=	millimeters
	t^s	=	time in seconds