42 USC § 7511 - Classifications and attainment dates
| Area class | Design value* | Primary standard attainment date** |
|---|---|---|
| Marginal | 0.121 up to 0.138 | 3 years after November 15, 1990 |
| Moderate | 0.138 up to 0.160 | 6 years after November 15, 1990 |
| Serious | 0.160 up to 0.180 | 9 years after November 15, 1990 |
| Severe | 0.180 up to 0.280 | 15 years after November 15, 1990 |
| Extreme | 0.280 and above | 20 years after November 15, 1990 |
| *The design value is measured in parts per million (ppm). | ||
| **The primary standard attainment date is measured from November 15, 1990. |
[1] So in original. Probably should be “terms”.
| Area class | Design value* | Primary standard attainment date** |
|---|---|---|
| Marginal | 0.121 up to 0.138 | 3 years after November 15, 1990 |
| Moderate | 0.138 up to 0.160 | 6 years after November 15, 1990 |
| Serious | 0.160 up to 0.180 | 9 years after November 15, 1990 |
| Severe | 0.180 up to 0.280 | 15 years after November 15, 1990 |
| Extreme | 0.280 and above | 20 years after November 15, 1990 |
| *The design value is measured in parts per million (ppm). | ||
| **The primary standard attainment date is measured from November 15, 1990. |
[1] So in original. Probably should be “terms”.
The table below lists the classification updates, since Jan. 3, 2012, for this section. Updates to a broader range of sections may be found at the update page for containing chapter, title, etc.
The most recent Classification Table update that we have noticed was Tuesday, May 21, 2013
An empty table indicates that we see no relevant changes listed in the classification tables. If you suspect that our system may be missing something, please double-check with the Office of the Law Revision Counsel.
| 42 USC | Description of Change | Session Year | Public Law | Statutes at Large |
|---|
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