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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.'''
  
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<center><font size=3>'''Percent P Removed Via Non-Volume Reduction Treatment'''</font size><br>
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{{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}}
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Link to this [[Percent P Removed Via Non-Volume Reduction Treatment|table]]</center>
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</font size>
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Link to this [[Percent P Removed Via Non-Volume Reduction Treatment|table]]
 
<table class="sortable">
 
<table class="sortable">
 
<tr>
 
<tr>
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<th>   </th>
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<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>
 
<th> </th>
 
<th> </th>
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<th>Current</th>
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<th>Current in MIDS calculator</th>
 
<th>Proposed</th>
 
<th>Proposed</th>
−
<th>Current</th>
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<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>
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<td>Is soil P content tested to be < 36 mg/kg per Mehlich III test?  
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<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 %
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*If yes, 40%
−
If no, 0%
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*If no, 0%
 
</td>
 
</td>
 
<td>0%</td>
 
<td>0%</td>
−
<td>Is soil P content tested to be < 36 mg/kg per Mehlich III test?  
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<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%
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*If no, 0%
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If yes, is there at least 2 feet of soil above the elevated underdrain? If yes, 20% credit,  
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*If yes, is there at least 2 feet of soil above the elevated underdrain? If yes, 20% credit,  
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If no, credit = 0.2*x
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*If no, credit = 0.2*x
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Where x = (soil depth above elevated underdrain) /2’
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:Where x = (soil depth above elevated underdrain) /2 feet
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Credit for approved P-sorbing soil amendments*?
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*Additional credit for approved P-sorbing soil amendments = 40 percent if one of the following conditions aapplies.
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For iron enhanced soils, Imbrium or WTRs, additional 40% credit
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**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)
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**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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<td>91%</td>
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<td>45%</td>
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<td>Is soil P content tested to be < 36 mg/kg per Mehlich III test?  
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<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 < 36 mg/kg per Mehlich III test?  
+
<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%
−
Does the system include approved P-sorbing soil amendments*?
+
 
−
For iron enhanced soils, Imbrium or WTRs, additional 40% credit
+
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>  </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?  
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<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%
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*If yes, 40%
 +
*If no, 0%
 
</td>
 
</td>
−
<td> </td>
+
<td>Not in calculator</td>
−
<td>Is soil P content tested to be < 36 mg/kg per Mehlich III test?  
+
<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%
−
Does the system include approved P-sorbing soil amendments*?
+
 
−
For iron enhanced soils, Imbrium or WTRs, additional 40% credit
+
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>
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<p>Approved P sorption amendments:</p>
 
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*5% by volume elemental iron filings above IWS or elevated underdrain
 
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*Minimum 5% by volume sorptive media above IWS or elevated underdrain
 
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*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)
 
−
 
  
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[[category:Table]]
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<noinclude>
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[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Bioretention]]
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</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?
  • If yes, 40%
  • If no, 0%
 0% Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) 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 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
Underdrain at the bottom 45% Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
  • If yes, 40%
  • If no, 0%
 0% Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
  • If yes, 20%
  • 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
Internal Water Storage (IWS) Not in calculator Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
  • If yes, 40%
  • If no, 0%
 Not in calculator Is soil P content tested to be < 30 mg/kg per Mehlich III (or equivalent) test?
  • If yes, 20%
  • 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
Retrieved from "https://stormwater.pca.state.mn.us/index.php?title=Percent_P_Removed_Via_Non-Volume_Reduction_Treatment&oldid=63957"

This page was last edited on 13 December 2022, at 18:39.