Difference between revisions of "Percent P Removed Via Non-Volume Reduction Treatment"
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| + | <font size=3>'''Percent P Removed Via Non-Volume Reduction Treatment.''' | ||
| − | + | {{alert|'''NOTE: These percentages apply to the non-volume reduction portion of stormwater runoff. The volume reduction portion of stormwater runoff receives 100 percent credit for particulate and dissolved phosphorus.'''|alert-warning}} | |
| − | Link to this [[Percent P Removed Via Non-Volume Reduction Treatment|table]] | + | </font size> |
| + | Link to this [[Percent P Removed Via Non-Volume Reduction Treatment|table]] | ||
<table class="sortable"> | <table class="sortable"> | ||
<tr> | <tr> | ||
| − | <th> | + | <th> </th> |
| − | <th | + | <th colspan=2>Particulate P</th> |
<th colspan=2>Dissolved P</th> | <th colspan=2>Dissolved P</th> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
<th> </th> | <th> </th> | ||
| − | <th>Current</th> | + | <th>Current in MIDS calculator</th> |
<th>Proposed</th> | <th>Proposed</th> | ||
| − | <th>Current</th> | + | <th>Current in MIDS calculator</th> |
<th>Proposed</th> | <th>Proposed</th> | ||
</tr> | </tr> | ||
| − | |||
<tr> | <tr> | ||
<td>No underdrain</td> | <td>No underdrain</td> | ||
| Line 26: | Line 27: | ||
<td>Elevated underdrain</td> | <td>Elevated underdrain</td> | ||
<td>45%</td> | <td>45%</td> | ||
| − | <td>Is soil P content tested to be < | + | <td>Is soil P content tested to be < 30 mg/kg per Mehlich III (or [[Design criteria for bioretention#Notes about soil phosphorus testing: applicability and interpretation|equivalent]]) test? |
| − | If yes, 40 % | + | *If yes, 40% |
| − | If no, 0% | + | *If no, 0% |
</td> | </td> | ||
<td>0%</td> | <td>0%</td> | ||
| − | <td>Is soil P content tested to be < | + | <td>Is soil P content tested to be < 30 mg/kg per Mehlich III (or [[Design criteria for bioretention#Notes about soil phosphorus testing: applicability and interpretation|equivalent]]) test? |
| − | If no, 0% | + | *If no, 0% |
| − | If yes, is there at least 2 feet of soil above the elevated underdrain? If yes, 20% credit, | + | *If yes, is there at least 2 feet of soil above the elevated underdrain? If yes, 20% credit, |
| − | If no, credit = 0.2*x | + | *If no, credit = 0.2*x |
| − | Where x = (soil depth above elevated underdrain) / | + | :Where x = (soil depth above elevated underdrain) /2 feet |
| − | + | *Additional credit for approved P-sorbing soil amendments = 40 percent if one of the following conditions aapplies. | |
| − | + | **5% by volume elemental iron filings above IWS or elevated underdrain | |
| + | **Minimum 5% by volume sorptive media above IWS or elevated underdrain | ||
| + | **Minimum 5% by weight water treatment residuals (WTR) to a depth of at least 10 cm (1/3 foot) | ||
| + | **Other P sorptive amendments with supporting third party research results showing P reduction for at least 20 year lifespan, P credit commensurate with research results | ||
</td> | </td> | ||
</tr> | </tr> | ||
| − | |||
<tr> | <tr> | ||
<td>Underdrain at the bottom</td> | <td>Underdrain at the bottom</td> | ||
| − | <td> | + | <td>45%</td> |
| − | <td>Is soil P content tested to be < | + | <td>Is soil P content tested to be < 30 mg/kg per Mehlich III (or [[Design criteria for bioretention#Notes about soil phosphorus testing: applicability and interpretation|equivalent]]) test? |
| − | If yes, 40 % | + | *If yes, 40% |
| − | If no, 0% | + | *If no, 0% |
</td> | </td> | ||
<td>0%</td> | <td>0%</td> | ||
| − | <td>Is soil P content tested to be < | + | <td>Is soil P content tested to be < 30 mg/kg per Mehlich III (or [[Design criteria for bioretention#Notes about soil phosphorus testing: applicability and interpretation|equivalent]]) test? |
| − | If yes, 20 % | + | *If yes, 20% |
| − | If no, 0% | + | *If no, 0% |
| − | + | ||
| − | + | Additional credit for approved P-sorbing soil amendments = 40 percent if one of the following conditions applies. | |
| + | *5% by volume elemental iron filings above IWS or elevated underdrain | ||
| + | *Minimum 5% by volume sorptive media above IWS or elevated underdrain | ||
| + | *Minimum 5% by weight water treatment residuals (WTR) to a depth of at least 10 cm (1/3 foot) | ||
| + | *Other P sorptive amendments with supporting third party research results showing P reduction for at least 20 year lifespan, P credit commensurate with research results | ||
</td> | </td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | |||
<td>Internal Water Storage (IWS)</td> | <td>Internal Water Storage (IWS)</td> | ||
| − | <td>Is soil P content tested to be < | + | <td>Not in calculator</td> |
| − | If yes, 40 % | + | <td>Is soil P content tested to be < 30 mg/kg per Mehlich III (or [[Design criteria for bioretention#Notes about soil phosphorus testing: applicability and interpretation|equivalent]]) test? |
| − | If no, 0% | + | *If yes, 40% |
| + | *If no, 0% | ||
</td> | </td> | ||
| − | <td> | + | <td>Not in calculator</td> |
| − | <td>Is soil P content tested to be < | + | <td>Is soil P content tested to be < 30 mg/kg per Mehlich III (or [[Design criteria for bioretention#Notes about soil phosphorus testing: applicability and interpretation|equivalent]]) test? |
| − | If yes, 20 % | + | *If yes, 20% |
| − | If no, 0% | + | *If no, 0% |
| − | + | ||
| − | + | Additional credit for approved P-sorbing soil amendments = 40 percent if one of the following conditions applies. | |
| + | *5% by volume elemental iron filings above IWS or elevated underdrain | ||
| + | *Minimum 5% by volume sorptive media above IWS or elevated underdrain | ||
| + | *Minimum 5% by weight water treatment residuals (WTR) to a depth of at least 10 cm (1/3 foot) | ||
| + | *Other P sorptive amendments with supporting third party research results showing P reduction for at least 20 year lifespan, P credit commensurate with research results | ||
</td> | </td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | [[ | + | <noinclude> |
| + | [[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Bioretention]] | ||
| + | </noinclude> | ||
Latest revision as of 18:39, 13 December 2022
Percent P Removed Via Non-Volume Reduction Treatment.
Caution: NOTE: These percentages apply to the non-volume reduction portion of stormwater runoff. The volume reduction portion of stormwater runoff receives 100 percent credit for particulate and dissolved phosphorus.
Link to this table
| Particulate P | Dissolved P | |||
|---|---|---|---|---|
| Current in MIDS calculator | Proposed | Current in MIDS calculator | Proposed | |
| No underdrain | 0% | 0% | 0% | 0% |
| Elevated underdrain | 45% | Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
|
0% | Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
|
| Underdrain at the bottom | 45% | Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
|
0% | Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
Additional credit for approved P-sorbing soil amendments = 40 percent if one of the following conditions applies.
|
| Internal Water Storage (IWS) | Not in calculator | Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
|
Not in calculator | Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
Additional credit for approved P-sorbing soil amendments = 40 percent if one of the following conditions applies.
|
This page was last edited on 13 December 2022, at 18:39.