m |
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<th>Proposed</th> | <th>Proposed</th> | ||
</tr> | </tr> | ||
− | |||
<tr> | <tr> | ||
<td>No underdrain</td> | <td>No underdrain</td> | ||
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*If no, credit = 0.2*x | *If no, credit = 0.2*x | ||
:Where x = (soil depth above elevated underdrain) /2 feet | :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. | *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> | ||
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</tr> | </tr> | ||
</table> | </table> | ||
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[[category:Table]] | [[category:Table]] |
Percent P Removed Via Non-Volume Reduction Treatment
Link to this table
Particulate P | Dissolved P | |||
---|---|---|---|---|
Current | Proposed | Current | Proposed | |
No underdrain | 0% | 0% | 0% | 0% |
Elevated underdrain | 45% | Is soil P content tested to be < 36 mg/kg per Mehlich III test?
If yes, 40 % If no, 0% |
0% | Is soil P content tested to be < 36 mg/kg per Mehlich III test?
|
Underdrain at the bottom | 91% | Is soil P content tested to be < 36 mg/kg per Mehlich III test?
If yes, 40 % If no, 0% |
0% | Is soil P content tested to be < 36 mg/kg per Mehlich III test?
If yes, 20 % If no, 0% Does the system include approved P-sorbing soil amendments*? For iron enhanced soils, Imbrium or WTRs, additional 40% credit |
Internal Water Storage (IWS) | Is soil P content tested to be < 36 mg/kg per Mehlich III test?
If yes, 40 % If no, 0% |
Is soil P content tested to be < 36 mg/kg per Mehlich III test?
If yes, 20 % If no, 0% Does the system include approved P-sorbing soil amendments*? For iron enhanced soils, Imbrium or WTRs, additional 40% credit |