Difference between revisions of "Percent P Removed Via Non-Volume Reduction Treatment"
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*If yes, 40 % | *If yes, 40 % | ||
*If no, 0% | *If no, 0% | ||
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| − | |||
| − | |||
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</td> | </td> | ||
<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 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> | ||
| Line 69: | Line 67: | ||
<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? | ||
| − | If yes, 40 % | + | *If yes, 40 % |
| − | If no, 0% | + | *If no, 0% |
</td> | </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 % |
| − | 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> | ||
Revision as of 20:17, 11 December 2013
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 | 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?
|
0% | Is soil P content tested to be < 36 mg/kg per Mehlich III test?
Additional credit for approved P-sorbing soil amendments = 40 percent if one of the following conditions applies.
|
| Internal Water Storage (IWS) | Is soil P content tested to be < 36 mg/kg per Mehlich III test?
|
Is soil P content tested to be < 36 mg/kg per Mehlich III test?
Additional credit for approved P-sorbing soil amendments = 40 percent if one of the following conditions applies.
|
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