Difference between revisions of "Percent P Removed Via Non-Volume Reduction Treatment"
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<td>0%</td> | <td>0%</td> | ||
<td>Is soil P content tested to be < 36 mg/kg per Mehlich III test? | <td>Is soil P content tested to be < 36 mg/kg per Mehlich III 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. | ||
For iron enhanced soils, Imbrium or WTRs, additional 40% credit | For iron enhanced soils, Imbrium or WTRs, additional 40% credit | ||
</td> | </td> | ||
| Line 72: | Line 73: | ||
</table> | </table> | ||
<p>Approved P sorption amendments:</p> | <p>Approved P sorption amendments:</p> | ||
| − | *5% by volume elemental iron filings above IWS or elevated underdrain | + | **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 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) | + | **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 | + | **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 |
[[category:Table]] | [[category:Table]] | ||
Revision as of 20:00, 11 December 2013
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?
For iron enhanced soils, Imbrium or WTRs, additional 40% credit |
| 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 |
||
Approved P sorption amendments:
- 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