Effective date: February 4, 1991 (18:2 Md. R. 151)
Chapter revised effective November 4, 1996 (23:22 Md. R. 1498)
Regulation .01 amended effective January 16, 2006 (33:1 Md. R. 39)
Regulation .01F amended as an emergency provision effective July 5, 2006 (33:16 Md. R. 1363); emergency status expired December 31, 2006
Regulation .02F, G amended effective February 18, 2002 (29:3 Md. R. 224)
Regulation .04 amended effective January 12, 2009 (36:1 Md. R. 25)
Regulation .05C amended effective January 16, 2006 (33:1 Md. R. 39)
Regulation .05D amended effective February 18, 2002 (29:3 Md. R. 224)