Modeling BMP Pollutant Load Reductions:
A Workshop for 319 Grantees
February 8, 2012
Modeling BMP Pollutant Load Reductions:
A Workshop for 319 Grantees
February 8, 2012
NH DES Pease Field Office
8:30 – 9:00: REGISTRATION & REFRESHMENTS
9:00 – 9:30: WORKSHOP OVERVIEW
· Introductions & Workshop Overview: Sally Soule, NH DES Watershed Assistance
Why are we here today? What will we learn? How will we apply this information to our 319 grant projects?
· Why Model Pollutant Load Reductions: Eric Williams & Jeffery Marcoux, NH DES Watershed Assistance
An overview of 319 grant requirements and Pollutants Controlled Reports (PCR)
9:30 -12:15: MEET THE MODELS
9:30 -10:45
· NH Residential Loading Model: Ken Edwardson, NH DES Water Quality Planning, and Jillian McCarthy, NH DES Watershed Assistance
A review of the NH Residential Loading Model spreadsheet, which is designed for homeowners to model various scenarios including existing pollutant load and future pollutant loading as a result of changes to the property, such as building a garage or deck, or installing stormwater BMPs.
· The Simple Method: Gregg Comstock, NH DES Water Quality Planning
The Simple Method can be used to estimate pre- and post-BMP implementation pollutant load reductions on a watershed or sub-watershed scale.
10:45 – 11:00 BREAK & NETWORKING
11:00 – 12:00
· The Water Erosion Prediction Project (WEPP) Road Model: Norm Marcotte, Maine Department of Environmental Protection
The WEPP Road Model is used to estimate sediment loads from gravel roads.
· Region 5 Model: Dustin Johnson, Acton Wakefield Watersheds Alliance (AWWA), and Sally Soule, NH DES Watershed Assistance Section
The Region 5 Model will estimate pollutant load reductions from gully stabilization, bank stabilization, and urban BMPs.
12:00 – 12:45 LUNCH (will be provided)
12:45 – 3:30: HANDS-ON TIME WITH THE MODELS
During this session, workshop participants will have an opportunity to apply each model to examples of real-world 319 project scenarios.
Note: Workshop participants are encouraged to download the models to their laptops in advance of the event (see links to the models; page 3 of this document). Bring your laptops to the workshop so that you can follow along during the case studies while using the models on your own computer. If you don’t have a laptop, it’s OK, you will still be able to participate in the session.
12:45 – 2:00
· WEPP: Learn the basics of field methods & model input.
Norm Marcotte, ME DEP
· NH Residential Loading Model: Examples from residential installations showing how to model small-scale BMPs.
Linda Schier, AWWA, and Jillian McCarthy, NH DES
2:00 – 2:15 BREAK & NETWORKING
2:15 – 3:30
· Region 5 Model: Examples from lake and urban retrofits showing how to use the model for gully stabilization and urban BMP projects.
Dustin Johnson, AWWA, and Sally Soule, NH DES
· Simple Method: A case study from Fossa Road and Cobbetts Pond showing how to use the model to estimate load reductions. The presentation will also compare results from the Simple Method to other model outputs.
Andy Chapman & Gregg Comstock, NH DES
· Next Steps: How to use the model output to fill out a PCR for your project.
Jeff Marcoux, NH DES
3:30 WRAP-UP & EVALUATION
LINKS TO WEBSITES WHERE THE MODELS ARE AVAILBLE FOR DOWNLOAD:
NH Residential Loading Model
The link is shown at the bottom of the page at this web site:
http://des.nh.gov/organization/divisions/water/stormwater/stormwater-mgmt-homeowners.htm
The Simple Method
The link to download the model is listed under “Hot Topics”: http://des.nh.gov/organization/divisions/water/wmb/section401/index.htm
Water Erosion Prediction Project (WEPP):
Click on the WEPP: Road button to use the model on line. If you have a wi fi enabled lap top, you will be able to follow along during the workshop demonstration.
http://forest.moscowfsl.wsu.edu/fswepp/
Region 5
Scroll down through the page. There are three Region 5 products for download (user manual, spreadsheet, and field data sheets):
http://it.tetratech-ffx.com/steplweb/models$docs.htm
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