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Use this Quick Guide if you do not currently use a model, calculator, or similar tool to calculate pollutant loads or load reductions.
 
Use this Quick Guide if you do not currently use a model, calculator, or similar tool to calculate pollutant loads or load reductions.
  
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STEP 2: For each BMP from the BMPs-activities completed worksheet, determine the TMDL watershed(s) from which each BMP is reducing pollutants
 
STEP 2: For each BMP from the BMPs-activities completed worksheet, determine the TMDL watershed(s) from which each BMP is reducing pollutants
  
STEP 3: For each BMP decide which category the BMP belongs to
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STEP 3: For each BMP listed on the BMPs-activities completed worksheet, decide which category the BMP belongs to
  
{{alert|Note: A BMP may not be reported in more than one category.|alert-info}}
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{{alert|Note: Reductions for a BMP may ONLY be reported in one category. (Category 1 or Category 2) |alert-info}}
  
 
<div style="background-color: none; border-style: solid;">
 
<div style="background-color: none; border-style: solid;">
 
*Use Category 1 if '''all''' of the following apply.
 
*Use Category 1 if '''all''' of the following apply.
**Pollutant loadings from the BMP/activity can be estimated using an [[Dummy page#Estimation of pollutant load reduction for the Cumulative reductions tab|appropriate method]]
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**Pollutant loadings from the BMP/activity can be estimated using an [http://stormwater.pca.state.mn.us/index.php/Stormwater_model_and_calculator_comparisons appropriate method]
 
**The pollutant is phosphorus, TSS, fecal coliform, or E. coli
 
**The pollutant is phosphorus, TSS, fecal coliform, or E. coli
 
**The BMP/activity was constructed '''within your jurisdiction''' (upstream of your MS4's outfall)
 
**The BMP/activity was constructed '''within your jurisdiction''' (upstream of your MS4's outfall)
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*Use Category 2 if '''any''' of the following applies.
 
*Use Category 2 if '''any''' of the following applies.
 
**Pollutant is Biochemical Oxygen Demand (BOD), Nitrogenous Biochemical Oxygen Demand (NBOD), chloride, or thermal loading
 
**Pollutant is Biochemical Oxygen Demand (BOD), Nitrogenous Biochemical Oxygen Demand (NBOD), chloride, or thermal loading
**Pollutant reduction information from the BMP/activity is not readily available using an [[Dummy page#Estimation of pollutant load reduction for the Cumulative reductions tab|appropriate method]]
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**Pollutant reduction information from the BMP/activity is not readily available using an [http://stormwater.pca.state.mn.us/index.php/Stormwater_model_and_calculator_comparisons appropriate method]
 
**You contribute(d) to the implementation of the BMP/activity but the reduction in pollutant loading occurs '''outside your jurisdictional area''' (e.g. you contributed funding to a BMP in another MS4's jurisdiction)
 
**You contribute(d) to the implementation of the BMP/activity but the reduction in pollutant loading occurs '''outside your jurisdictional area''' (e.g. you contributed funding to a BMP in another MS4's jurisdiction)
 
**The BMP/activity was in operation the past year
 
**The BMP/activity was in operation the past year
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STEP 5: For Category 1, in the column with the applicable reporting year (Column E for 2014, Column F for 2015, etc.), enter pollutant loading reductions for each applicable TMDL. In the first year of reporting, this number will reflect the amount of pollutant reduced by all BMPs together up to the end of 2014. Subsequent years will show the 2014 reduction plus any reductions achieved in the reporting year.
 
STEP 5: For Category 1, in the column with the applicable reporting year (Column E for 2014, Column F for 2015, etc.), enter pollutant loading reductions for each applicable TMDL. In the first year of reporting, this number will reflect the amount of pollutant reduced by all BMPs together up to the end of 2014. Subsequent years will show the 2014 reduction plus any reductions achieved in the reporting year.
[[File:Screen shot reductions tab.png|thumb|left|alt=reductionstab|Step 5]]
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[[File:Screen shot reductions tab.png|thumb|left|alt=reductionstab|Step 5 and Step 6]]
  
  

Revision as of 19:35, 1 February 2022

Use this Quick Guide if you do not currently use a model, calculator, or similar tool to calculate pollutant loads or load reductions.

Gathering BMP reduction information

The following guidance assumes the permittee has already completed BMPs-activities tab and therefore has already made a list of their BMPs.

STEP 1: Define the watershed boundaries of TMDL study areas that intersect your jurisdiction

STEP 2: For each BMP from the BMPs-activities completed worksheet, determine the TMDL watershed(s) from which each BMP is reducing pollutants

STEP 3: For each BMP listed on the BMPs-activities completed worksheet, decide which category the BMP belongs to

Information: Note: Reductions for a BMP may ONLY be reported in one category. (Category 1 or Category 2)
  • Use Category 1 if all of the following apply.
    • Pollutant loadings from the BMP/activity can be estimated using an appropriate method
    • The pollutant is phosphorus, TSS, fecal coliform, or E. coli
    • The BMP/activity was constructed within your jurisdiction (upstream of your MS4's outfall)
    • The BMP/activity was in operation the past year
  • Recommend using Category 2 if the pollutant is chloride, but Category 1 may be used if you have detailed records and can justify your methodology.


  • Use Category 2 if any of the following applies.
    • Pollutant is Biochemical Oxygen Demand (BOD), Nitrogenous Biochemical Oxygen Demand (NBOD), chloride, or thermal loading
    • Pollutant reduction information from the BMP/activity is not readily available using an appropriate method
    • You contribute(d) to the implementation of the BMP/activity but the reduction in pollutant loading occurs outside your jurisdictional area (e.g. you contributed funding to a BMP in another MS4's jurisdiction)
    • The BMP/activity was in operation the past year


STEP 4: For Category 1 BMPs, determine reductions in pollutant loading. For guidance, including calculation methods, see Category 1

STEP 5: For Category 1, in the column with the applicable reporting year (Column E for 2014, Column F for 2015, etc.), enter pollutant loading reductions for each applicable TMDL. In the first year of reporting, this number will reflect the amount of pollutant reduced by all BMPs together up to the end of 2014. Subsequent years will show the 2014 reduction plus any reductions achieved in the reporting year.

reductionstab
Step 5 and Step 6





STEP 6: In column D, report the units used for your reduction report.

STEP 7: If desired, complete columns L and M. MPCA approved calculation methods can be found by clicking the link in the column heading. MPCA highly recommends tracking your methodology for determining these numbers.

reductionstab
Step 7







Step 8: For Category 2, in the column with the applicable reporting year, enter the number of Category 2 BMPs. In the first year of reporting, this number will reflect all Category 2 BMPs up to the end of 2014. Subsequent years will include the number of BMPs for 2014 plus any BMPs implemented in the reporting year.

reductionstab
Step 8