Code of Massachusetts Regulations
310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION
Title 310 CMR 8.00 - The Prevention And/or Abatement Of Air Pollution Episode And Air Pollution Incident Emergencies
Section 8.01 - Introduction
The purpose of 310 CMR 8.00 is to prevent ambient aircontaminant concentrations at any location in the Commonwealth from reaching levels which would constitute significant harm, or imminent and substantial endangerment to the health of persons. The levels which would constitute significant harm, or imminent and substantial endangerment, to the health of persons as have been defined by the Administrator of the Environmental Protection Agency are set forth in Table 1.
TABLE 1.
CONTAMINANT CONCENTRATION LEVELS Prescribed by the EPA Administrator as would cause significant harm, or Imminent and Substantial Endangerment, to Health.
|
Contaminant |
Ambient Air Contaminant Concentration Levels |
|||||
|
Ave. ug/m3 |
ppm |
COHs |
Duration (average) |
Product |
||
|
Sulfur Dioxide (SO 2) |
2,620 |
1.0 |
24-hr. |
|||
|
Particulate Matter PM10 Tape Stain (COHs) |
600 |
8 |
24-hr. 24-hr. |
|||
|
Product of: (SO 2) X (COHs) (SO 2) |
(COHs) |
24-hr. |
1.5 |
|||
|
Carbon Monoxide |
144,000 |
125 |
1-hr. |
|||
|
Carbon Monoxide |
86,300 |
75 |
4-hr. |
|||
|
Carbon Monoxide |
57,500 |
50 |
8-hr. |
|||
|
Photochemical Oxidant |
1,200 |
0.6* |
1-hr. |
|||
|
Nitrogen Dioxide |
3,750 |
2.0 |
1-hr. |
|||
|
Nitrogen Dioxide |
938 |
0.5 |
24-hr. |
|||
*expressed as Ozone (O 3)
