Md. Code Regs. 26.11.16.09
A. Special Screening Levels (SSL) and Acceptable Ambient Levels (AAL).
| CAS Number | Substance | Concentration (micrograms/ cubic meter) | Averaging Time | Type of Level | |
|---|---|---|---|---|---|
| (1) | 7664-41-7 | Ammonia (a) (b) | 300. 450. | 8 hours 1 hour | AAL AAL |
| (2) | 124-38-9 | Carbon Dioxide (a) (b) (c) (d) | 288,000. 2,088,000. 900,000. 2,700,000. | 8 hours 1 hour 8 hours 1 hour | SSL SSL AAL AAL |
| (3) | 10049-04-4 | Chlorine Dioxide (a) (b) | 5. 15. | 8 hours 1 hour | AAL AAL |
| (4) | 611-19-8 | 1-Chloro-2-(chloromethyl)-benzene (OCBC) | 9.1 | 8 hours | SSL |
| (5) | 81777-89-1 | Dimethazone | 27.4 | 8 hours | SSL |
| (6) | 598-56-1 | Dimethylethylamine | 1.6 | 8 hours | SSL |
| (7) | 75-00-3 | Ethyl Chloride (a) (b) | 2.6 13. | 8 hours 1 hour | SSL SSL |
| (8) | 107-44-8 | GB (Sarin) (a) (b) | 0.0003 0.04 | 8 hours 15 minutes | SSL SSL |
| (9) | 96-64-0 | GD (Soman) (a) (b) | 0.003 0.012 | 8 hours 15 minutes | SSL SSL |
| (10) | 7647-01-0 | Hydrogen Chloride (a) (b) | 7. 117. | Annual 1 hour | AAL AAL |
| (11) | 541-25-3 | L (Lewisite) | 0.0004 | 15 minutes | SSL |
| CAS Number | Substance | Concentration (micrograms/ cubic meter) | Averaging Time | Type of Level | |
| (12) | 74-87-3 | Methyl Chloride (a) (b) | 105. 525. | 8 hours 1 hour | SSL SSL |
| (13) | 50782-69-9 | VX (Ethyl S-Dimethyl amino ethyl Methyl-phosphonothiolate) (a) (b) | 0.0003 0.004 | 8 hours 15 minutes | SSL SSL |
| (14) | 7733-02-0 | Zinc Sulfate | 18.8 | 8 hours | SSL |
Authority: Environment Article, §§1-101, 1-404, 2-101—2-103, 2-301—2-303, 10-102, and 10-103, Annotated Code of Maryland
Effective date:
Chapter revised and recodified from COMAR 26.11.15.07B—.14 to COMAR 26.11.16 effective October 5, 1998 (25:20 Md. R. 1533)