1. A. Appropriate analytical procedures to determine whether a sample contains a given toxic constituent are specified in Chapter Two, “Choosing the Correct Procedure”, found in “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods”, EPA Publication SW-846, which is incorporated by reference in COMAR 26.13.01.05A(4).
2. B. Before selecting a final sampling and analysis method, a person shall consult the specific section or method described in SW-846 for additional guidance on which of the approved methods should be employed for a specific situation involving sample analysis.

Authority: Environment Article, §6-905.3 and Title 7, Subtitle 2, Annotated Code of Maryland

Effective date:

Regulations .01—.17 adopted as an emergency provision effective November 18, 1980 (7:25 Md. R. S-1); adopted permanently effective April 3, 1981 (8:7 Md. R. 642)

Regulations .02C, F; .04A, B, D; .05D, .06B, .15, .16, and .17E, F amended, .05F adopted, and .07C repealed effective February 13, 1984 (11:3 Md. R. 202)

Regulations .02F, .03A. .06B, .13B, .14, .15, .17E—F and Appendices IV and V amended, and .05G adopted effective July 30, 1984 (11:5 Md. R. 1330)

Regulations .02F, .04D, .07C, and .16-1 adopted effective January 31, 1983 (10:2 Md. R. 110)

Regulations .03A, .04A and B, .07A and B, .10A, .11A, .12A, and .17F amended effective January 31, 1983 (10:2 Md. R. 110)

Regulations .04, .05C, .06B, .15, .16, .17E, F, and Appendix IV amended effective January 18, 1982 (9:1 Md. R. 20)

Regulation .05A, B amended effective August 12, 1985 (12:16 Md. R. 1607)

Regulation .16 amended as an emergency provision effective January 13, 1987 (14:3 Md. R. 269); emergency status expired June 29, 1987; adopted permanently effective July 12, 1987 (14:14 Md. R. 1573)

Regulation .16-1 amended as an emergency provision effective January 13, 1987 (14:3 Md. R. 269); emergency status expired June 29, 1987; adopted permanently effective July 12, 1987 (14:14 Md. R. 1573)

Annotation: COMAR 10.51.02 cited in Thomas v. State of Maryland, 62 Md. App. 160 (1985)

Regulation .01 amended effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .02A—F repealed, and new A—G adopted effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .03C amended effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .04A, B amended effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .05A—F amended, and G repealed effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .06 repealed and new Regulation .06 adopted effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .06-1 adopted effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .14E amended effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .15 amended effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .16 amended effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .16-1 amended effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .17 amended effective April 18, 1988 (15:8 Md. R. 1009)

Appendices III, IV, and V amended effective April 18, 1988 (15:8 Md. R. 1009)

Regulation .06-1 recodified to Regulation .07

Regulations .07—.16 recodified to Regulations .08—.17

Regulation .16-1 recodified to Regulation .18

Regulation .17A—E recodified to Regulation .19A—E

Regulation .17E-1, F, and G recodified to Regulation .19F, G, and H

Appendices I—VI codified as Regulations .20—.25

Chapter recodified from COMAR 10.51.02 to COMAR 26.13.02

Regulation .01C amended effective December 23, 1991 (18:25 Md. R. 2759); May 24, 1993 (20:10 Md. R. 853)

Regulation .02A amended effective August 28, 1995 (22:17 Md. R. 1321)

Regulation .02A, G amended effective December 23, 1991 (18:25 Md. R. 2759)

Regulation .02C amended effective May 24, 1993 (20:10 Md. R. 853)

Regulation .03A amended effective December 23, 1991 (18:25 Md. R. 2759); September 7, 1998 (25:18 Md. R. 1438)

Regulation .04 amended and recodified to Regulations .04 and .04-1—.04-3 effective December 23, 1991 (18:25 Md. R. 2759)

Regulation .04A amended effective May 24, 1993 (20:10 Md. R. 853); August 28, 1995 (22:17 Md. R. 1321); September 10, 1997 (24:5 Md. R. 413)

Regulations .04-1 amended effective April 11, 1994 (21:7 Md. R. 533); September 7, 1998 (25:18 Md. R. 1438)

Regulations .04-4 and .04-5 adopted effective December 23, 1991 (18:25 Md. R. 2759)

Regulation .04-4B amended effective May 5, 1997 (24:9 Md. R. 659)

Regulation .05B amended effective September 10, 1997 (24:5 Md. R. 413)

Regulation .05C amended effective December 23, 1991 (18:25 Md. R. 2759)

Regulation .05D amended effective May 24, 1993 (20:10 Md. R. 853); May 8, 1995 (22:9 Md. R. 648)

Regulation .05E amended effective September 7, 1998 (25:18 Md. R. 1438)

Regulation .06 amended effective December 23, 1991 (18:25 Md. R. 2759)

Regulation .06A amended effective May 24, 1993 (20:10 Md. R. 853); August 28, 1995 (22:17 Md. R. 1321); September 10, 1997 (24:5 Md. R. 413); September 7, 1998 (25:18 Md. R. 1438)

Regulation .06D adopted effective August 28, 1995 (22:17 Md. R. 1321)

Regulation .09A amended effective April 11, 1994 (21:7 Md. R. 533)

Regulation .10A amended effective December 23, 1991 (18:25 Md. R. 2759)

Regulation .14 repealed and new Regulation .14 adopted effective December 23, 1991 (18:25 Md. R. 2759)

Regulation .15B and C amended effective December 23, 1991 (18:25 Md. R. 2759)

Regulation .16 amended effective December 23, 1991 (18:25 Md. R. 2759); May 24, 1993 (20:10 Md. R. 853); April 11, 1994 (21:7 Md. R. 533); September 10, 1997 (24:5 Md. R. 413)

Regulation .17 amended effective June 10, 1992 (18:25 Md. R. 2759); April 11, 1994 (21:7 Md. R. 533); August 28, 1995 (22:17 Md. R. 1321)

Regulation .18 amended effective March 6, 1989 (16:4 Md. R. 498)

Regulation .19 amended effective December 23, 1991 (18:25 Md. R. 2759); May 24, 1993 (20:10 Md. R. 853); April 11, 1994 (21:7 Md. R. 533)

Regulation .22 amended effective May 24, 1993 (20:10 Md. R. 853); April 11, 1994 (21:7 Md. R. 533); September 10, 1997 (24:5 Md. R. 413)

Regulation .23 amended effective December 23, 1991 (18:25 Md. R. 2759); April 11, 1994 (21:7 Md. R. 533); August 28, 1995 (22:17 Md. R. 1321); September 10, 1997 (24:5 Md. R. 413)

Regulation .24 amended effective April 11, 1994 (21:7 Md. R. 533); September 10, 1997 (24:5 Md. R. 413)

Regulation .25 amended effective December 23, 1991 (18:25 Md. R. 2759); April 11, 1994 (21:7 Md. R. 533); September 10, 1997 (24:5 Md. R. 413)

Regulation .26 adopted effective March 6, 1989 (16:4 Md. R. 498)

Chapter revised effective October 16, 2000 (27:20 Md. R. 1843)

Regulation .01B amended effective October 1, 2025 (52:17 Md. R. 876)

Regulation .01C amended effective November 1, 2002 (29:21 Md. R. 1647); May 1, 2008 (35:8 Md. R. 809); January 13, 2022 (49:1 Md. R. 14)

Regulation .02A, C amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .02B amended effective January 13, 2022 (49:1 Md. R. 14)

Regulation .02G amended effective November 1, 2002 (29:21 Md. R. 1647); January 13, 2022 (49:1 Md. R. 14)

Regulation .02H adopted effective January 13, 2022 (49:1 Md. R. 14)

Regulation .03 amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .03A amended effective January 18, 2016 (43:1 Md. R. 14)

Regulation .04A amended effective November 1, 2002 (29:21 Md. R. 1647); May 1, 2008 (35:8 Md. R. 809); January 18, 2016 (43:1 Md. R. 14); January 13, 2022 (49:1 Md. R. 14); October 1, 2025 (52:17 Md. R. 876)

Regulation .04C adopted effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .04-1 amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .04-1A amended effective October 1, 2025 (52:17 Md. R. 876)

Regulation .04-3A amended effective May 1, 2008 (35:8 Md. R. 809); January 13, 2022 (49:1 Md. R. 14)

Regulation .04-3D adopted January 13, 2022 (49:1 Md. R. 14)

Regulation .04-4 amended effective May 1, 2008 (35:8 Md. R. 809); May 3, 2021 (48:9 Md. R. 359)

Regulation .04-4A amended January 13, 2022 (49:1 Md. R. 14)

Regulation .04-4F adopted January 13, 2022 (49:1 Md. R. 14)

Regulation .04-5 amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .04-5A amended effective May 3, 2021 (48:9 Md. R. 359)

Regulation .04-6 adopted effective January 18, 2016 (43:1 Md. R. 14)

Regulation .04-7 adopted effective October 1, 2025 (52:17 Md. R. 876)

Regulation .05 amended effective November 1, 2002 (29:21 Md. R. 1647); May 3, 2021 (48:9 Md. R. 359)

Regulation .05A amended effective January 1, 2007 (33:26 Md. R. 1999); January 13, 2022 (49:1 Md. R. 14)

Regulation .05A, D amended effective October 1, 2025 (52:17 Md. R. 876)

Regulation .05B amended effective September 11, 2006 (33:18 Md. R. 1507)

Regulation .05G adopted effective January 1, 2007 (33:26 Md. R. 1999)

Regulation .06 amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .06A amended effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .06A, A-1 amended effective January 13, 2022 (49:1 Md. R. 14)

Regulation .06A-1 amended effective October 1, 2025 (52:17 Md. R. 876)

Regulation .06B adopted effective October 1, 2025 (52:17 Md. R. 876)

Regulation .06C amended effective October 1, 2025 (52:17 Md. R. 876)

Regulation .06D repealed effective January 13, 2022 (49:1 Md. R. 14)

Regulation .06E adopted effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .06E repealed effective January 13, 2022 (49:1 Md. R. 14)

Regulation .07A, B amended effective October 1, 2025 (52:17 Md. R. 876)

Regulation .07B amended effective September 11, 2006 (33:18 Md. R. 1507); May 1, 2008 (35:8 Md. R. 809)

Regulation .07-1 adopted effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .07-1B amended effective May 1, 2008 (35:8 Md. R. 809); October 1, 2025 (52:17 Md. R. 876)

Regulation .10 amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .10B amended effective January 13, 2022 (49:1 Md. R. 14)

Regulation .11 amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .11A, C amended effective October 1, 2025 (52:17 Md. R. 876)

Regulation .11-1 adopted effective May 1, 2008 (35:8 Md. R. 809)

Regulation .12B amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .13 amended effective May 1, 2008 (35:8 Md. R. 809); October 1, 2025 (52:17 Md. R. 876)

Regulation .14 amended effective May 1, 2008 (35:8 Md. R. 809)

Regulation .15D amended effective January 13, 2022 (49:1 Md. R. 14)

Regulation .16 amended effective January 18, 2016 (43:1 Md. R. 14)

Regulation .16A amended effective May 1, 2008 (35:8 Md. R. 809); October 1, 2025 (52:17 Md. R. 876)

Regulation .17 amended effective July 8, 2002 (29:13 Md. R. 992); May 1, 2008 (35:8 Md. R. 809); January 13, 2022 (49:1 Md. R. 14)

Regulation .17A amended effective January 18, 2016 (43:1 Md. R. 14)

Regulation .18 amended effective July 8, 2002 (29:13 Md. R. 992)

Regulation .19 amended effective May 1, 2008 (35:8 Md. R. 809); May 3, 2021 (48:9 Md. R. 359)

Regulation .19C, G amended effective October 1, 2025 (52:17 Md. R. 876)

Regulation .19-1 adopted effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .19-2 adopted effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .19-2 amended effective May 3, 2021 (48:9 Md. R. 359)

Regulation .19-3 adopted effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .19-4 adopted effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .19-5 adopted effective November 1, 2002 (29:21 Md. R. 1647)

Regulation .19-6 adopted effective January 18, 2016 (43:1 Md. R. 14)

Regulation .19-6A, D amended effective January 13, 2022 (49:1 Md. R. 14)

Regulation .19-7 adopted effective January 18, 2016 (43:1 Md. R. 14)

Regulation .19-7 repealed and new Regulation .19-7 adopted effective January 13, 2022 (49:1 Md. R. 14)

Regulation .19-8 adopted effective January 18, 2016 (43:1 Md. R. 14)

Regulation .19-8 repealed and new Regulation .19-8 adopted effective January 13, 2022 (49:1 Md. R. 14)

Regulation .23 amended effective November 1, 2002 (29:21 Md. R. 1647); May 1, 2008 (35:8 Md. R. 809); January 13, 2022 (49:1 Md. R. 14); October 1, 2025 (52:17 Md. R. 876)

Regulation .24 repealed and new Regulation .24 adopted effective May 1, 2008 (35:8 Md. R. 809)

Regulation .25 adopted effective January 18, 2016 (43:1 Md. R. 14)

Regulation .26 repealed and new Regulation .26 adopted effective July 8, 2002 (29:13 Md. R. 992)