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'''</font size><br> | |
| − | + | Link to this [[Percent P Removed Via Non-Volume Reduction Treatment|table]] | |
| − | Link to this [[Percent P Removed Via Non-Volume Reduction Treatment|table]] | ||
<table class="sortable"> | <table class="sortable"> | ||
<tr> | <tr> | ||
| − | <th> | + | <th> </th> |
<th colspan=2>Particulate P</th> | <th colspan=2>Particulate P</th> | ||
<th colspan=2>Dissolved P</th> | <th colspan=2>Dissolved P</th> | ||
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</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td> </td> |
<td>Internal Water Storage (IWS)</td> | <td>Internal Water Storage (IWS)</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? | ||
| Line 63: | Line 62: | ||
If no, 0% | If no, 0% | ||
</td> | </td> | ||
| − | <td> | + | <td> </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 yes, 20 % | If yes, 20 % | ||
Revision as of 15:11, 25 September 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?
If no, 0% If yes, is there at least 2 feet of soil above the elevated underdrain? If yes, 20% credit, If no, credit = 0.2*x Where x = (soil depth above elevated underdrain) /2’ Credit for approved P-sorbing soil amendments*? 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 (see Task 7 for examples of other P sorptive amendments currently being studied)