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<td>Weekly</td> | <td>Weekly</td> | ||
+ | <td>High-efficiency Regenerative Air-Vacuum</td> | ||
<td>0.10</td> | <td>0.10</td> | ||
<td>0.10</td> | <td>0.10</td> | ||
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</tr> | </tr> | ||
</table> | </table> |
Region 1 nutrient reduction efficiency factors for sweeping impervious areas (USEPA 2017a).
Link to this table
Frequency | Sweeper technology | Phosphorus reduction factor | Nitrogen reduction factor |
---|---|---|---|
2/year (spring and fall) | Mechanical Broom | 0.01 | 0.01 |
2/year (spring and fall) | Vacuum Assisted | 0.02 | 0.02 |
2/year (spring and fall) | High-efficiency Regenerative Air-Vacuum | 0.02 | 0.02 |
Monthly | Mechanical Broom | 0.03 | 0.03 |
Monthly | Vacuum assisted | 0.04 | 0.04 |
Monthly | High-efficiency Regenerative Air-Vacuum | 0.08 | 0.08 |
Weekly | Mechanical broom | 0.05 | 0.06 |
Weekly | Vacuum assisted | 0.08 | 0.07 |
Weekly | High-efficiency Regenerative Air-Vacuum | 0.10 | 0.10 |