BMP Trains

Title - Alternative

BMP Trains 2020

Preferred Title

BMPTrains 2020

Keywords

bmptrains, computer program, assessment, stormwater, water quality, FDEP, FDOT, SJRWMD, SWFWMD, SFWMD, State of Florida

Subjects

Hydrology, Environmental Engineering, C# programming, Civil Engineering, Stormwater Management

Description

This is version 4.2.3 BMP Trains 2020. It is a computer program used to assess the average annual effectiveness of stormwater best management practices. It is based on the design criteria used in the State of Florida. It was released for use on October 13, 2020. It is noted that the model reflects what the current (Sep 2020) regulatory and consultant assessment process is and allows for additional user defined options.

The improvements from the 2.0 series are listed as:

1. Transfer of data from spreadsheets to the composite calculation sheets now has a "paste" button.

2. More accurate calculation of the treatment volume with permeable pavements.

3. Inclusion of latest research with VFS. This resulted in validation of a minimum width of 10 feet, a maximum BAM depth of 2 feet, and a maximum slope of 20%. The option of assessing the annual load and average annual concentration to groundwater was added in the month of April 2020.

4. BMPs upstream of downstream BMPs as the upstream affects downstream removals. An example is on the filtration system worksheet… Is there an upstream BMP in this catchment (ex. wet pond)? Wet pond is the usual upstream BMP, but there may be others. Normally in design and review, the upstream BMP is large enough to remove most of the particulate fraction. When the particulate fraction is removed in an upstream BMP, it cannot be again removed in the downstream BMP.

5. Tools Media Service Life: Replaced Sorption Rate with Removal Rate and an upper limit on removal from 5.0 to 10.0 mgOP/g media. Sorption is only one mechanism for removal. Also, added the treatment depth that was used for the effectiveness as a print-out. Service life calculations have been expanded because of the need to document media maintenance frequency (service life).

6. For exfiltration trench, another check was made to limit the aggregate Void % to less than 100 and it is clear that it is a %.

7. For permeable pavement, added other pavement types called User Defined 20 and User Defined 30, in case there are other pavement options not defined in the model. The 20 and 30 refers to the sustainable void space. Note the sustainable void space remains as a fixed number, thus if you have other options, calculate the volume and then set the thickness to reach that volume. Also, an additional reservoir space with 95% open space was added to allow the option of vault storage beneath pervious pavements.

8. Expanded abbreviations, example is the word surf to surface as to better define the word. Also, we have tried to limit the number of acronyms.

9. Save most recent .bmpt runs in case you forget in what folder they are located. This is accessed on the main page from the bottom button labeled as open project.

10. A means to store and use a pre-development land use that has an existing BMP. Use the button called open pre BMP. There is an example with the manual of how this is done.

11. The catchment name now appears with the catchment number.

12. Groundwater loading may affect loading at a site. On the catchment worksheet, you can now enter phosphorus and nitrogen groundwater loading. Since groundwater loading will be so variable, side calculations are needed to support the input.

13. For Exfiltration, swale and pervious pavements, the physical design data can be entered before the selection of the BAM. These data had to be re-entered after BAM was selected. This is no longer the case.

14. Equality of input descriptions, such as not selected for BAM rather than none, Treatment depth rather than sometimes using depth, composite curve number rather than sometimes composite number, and others.

15. Debug "help" buttons have been removed.

16. The " User Manual" is now accessible from the site characteristics page.

17. The user defined BMP can be added after any configuration to allow additional removal. Examples are a littoral zone in the wet detention pond at the end of a series of wet detention BMPs and chemical treatment.

18. Tools Media Surface Area Calculation. The rate of treatment used for default values includes a factor of safety. That was noted in the printout also.

19. More consistent use of the term rain garden.

20. Error catches for the harvesting BMP option.

In the last 17 months, we have hosted 15 workshops in 12 locations around the State. There were over 400 participants. We thank each and every one for their valued recommendations. The program reflects the current (2020) acceptable stormwater methodologies in the State of Florida. And the program remains flexible to allow user inputs for discovery and evaluation. AGAIN>>> THANKS.

It is an improvement from all previous versions – most notably because of the departure from the Microsoft Excel platform to being programmed and compiled using the C# programming language. The entire user interface and much of the internal function has been completely overhauled, while still preserving the essential goal of quantifying pre- and post-development average annual nutrient loading (Nitrogen and Phosphorus) and determining the average annual effectiveness of a wide variety of Best Management Practices (BMPs) for the nutrients’ removal.

The research by Dr. Harvey Harper, Dr. Marty Wanielista, Dr. Mike Hardin, Eric Livingston, Dr. Kelly Kilbler, Dr. Ni-Bin Chang and others in computing nutrient loads and BMP removal effectiveness continues to be the backbone of the program. The program was written by Dr. Ron Eaglin and Dr, Marty Wanielista with the support of many University of Central Florida Students.

Abstract

This is version 4.2.3 BMP Trains 2020. It is a computer program used to assess the average annual removal effectiveness of nutrients. It is based on research from the State of Florida and uses design criteria in the State. It is accepted by regulatory agencies in the State. It was posted for use stating on October 13, 2020.

This version allows for greater flexibility in media selection. Noted is the choice of treatment rate to calculated service life. Treatment rate is usually decreased by 2 to incorporate a factor of safety. It also increases the reporting decimal places for TP removed in the Summary and Complete Reports A well as changes from fraction to % in exfiltration worksheet..

The development was supported by the Florida Department of Transportation. It is an improvement from all previous versions – most notably because of the departure from the Microsoft Excel platform to being programmed and compiled using the C# programming language. The entire user interface and much of the internal function has been completely overhauled, while still preserving the essential goal of quantifying pre- and post-development average annual nutrient loading (Nitrogen and Phosphorus) and determining the average annual effectiveness of a wide variety of Best Management Practices (BMPs) for the nutrients’ removal.

The research by Dr. Harvey Harper, Dr. Marty Wanielista, Dr. Mike Hardin, Dr. Kelly Kibler, Dr Ni-Bin Chang, Eric Livingston, and others in computing nutrient loads and BMP removal effectiveness continues to be the backbone of the program. Dr. Ron Eaglin provided the programming in C# with Visual Basic.

The program preserves the methodologies used to assess average annual effectiveness as currently used by consultants and professional within the State of Florida. The program has been reviewed by State agencies as well as consultants. The reviewers include staff from the Florida Department of Transportation, Florida Department of Environmental Protection, Water Management Districts, and local agencies. Where there is doubt as to model parameters (input data), the option for user inputs has been preserved.

It is understood that BMP Trains 2020 reflects current state-of-the art methods that are used to determine average annual effectiveness of stormwater best management practices (BMPs). The authors appreciate the input from all of the reviewers and are committed to making changes as the science and engineering changes are approved by reviewing agencies.

Contributors

Florida Department of Transportation

Florida Department of Environmental Regulation

St. Johns River Water Management District

South Florida Water Management District

Southwest Florida Water Management District

Northwest Florida Water Management District

Suwanee River Water Management District

University of Central Florida

Department of Civil, Environmental and Construction Engineering at UCF

Stormwater Management Academy at UCF

Professional stormwater individuals at many consulting engineering companies.

Date Created

10-13-2020

Type

Analysis Model

Number of Pages

At least 100 worksheets are available for use with 14 BMP options.

College

College of Engineering & Computer Science

Unit

Stormwater Management Academy

Location

University of Central Florida

Department

Civil, Environmental and Construction Engineering

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