Modeling Pollutant Load Reductions for TMDL and Pollution Reduction Plans in Pennsylvania

Transcription

1 Modeling Pollutant Load Reductions for TMDL and Pollution Reduction Plans in Pennsylvania

2 Welcome to the Webcast To Ask a Question Submit your question in the chat box located to the left of the slides. We will answer as many as possible during Q&A. To Answer a Poll Question Simply select the preferred option. For those viewing this session alongside several colleagues, respond in a manner that represents your organization as a whole. We ARE Recording this Session All comments and questions will be recorded and included in the archives. We will notify you as soon as the recording and related resources are loaded on the web. We Appreciate Your Feedback Fill out our evaluations our funders need to hear it!

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4 Upcoming Webcasts Feb. 25: Potential Benefits of Nutrient and Sediment Practices to Reduce Toxic Contaminants in the Chesapeake Bay Watershed

5 Poll Question #1 How many people are watching with you today? Just me 2-5 people 6-10 people > 10 people

6 Poll Question #2 In what sector do you work? Academia Federal Government Local Government State Government Non-profit Private Other tell us in the chat box

7 Poll Question #3 Level of Modeling Experience? Expert-Show me a modeling program and I ll blow your mind Novice- I have used some models but not a regular task. Beginner- I used to build model airplanes when I was a kid.

8 Speaker Info Dr. Barry Evans, Penn State University Deb Caraco, P.E. Center for Watershed Protection Bryan Seipp, Center for Watershed Protection

9 Today s Agenda MapShed Overview Watershed Treatment Model Overview Chesapeake Bay Assessment and Scenario Tool and BayFast Overview

10 Using MapShed to Evaluate Potential Load Reductions Associated with MS4/TMDL/Reduction Plan Requirements Barry M. Evans, Ph.D. Penn State University

11 Estimating Pollutant Loads with MapShed

12 General sequence of steps: Run MapShed to establish current load without BMPs/mitigation activities Determine target load Use BMP Editor within GWLF-E to estimate load reductions with various BMP scenarios Iteratively run model and compare results with initial load to see if percent reduction target has been achieved Use Urban Area Tool to assess load reductions by urban area as needed

13 Case study located on central PA TP reduction of 26% required by local TMDL

14 Run MapShed to Establish Initial Load

15 Using the Project Manager

16 Loading Data

17 Selecting a Watershed

18 Specify Initial Input Parameters for Pre-Processing

19 Initiate Data Pre-processing

20 Open up the GWLF-E Model

21 Load and Review Input File (Optional)

22 Provide Output File Name and Run Model

23 Review Output from Initial Model Run

24 Review Output from Initial Model Run

25 Determine Target Reductions/Loads At requirement for 26% reduction of TP: Required P reduction = 3188 kg * 0.26 = 829 kg Target load = = 2359 kg

26 Run BMP Editor within GWLF-E to Estimate Load Reductions Given Various BMP Types and Implementation Levels

27 Load Input File into GWLF-E

28 Add New and Proposed Rural Land BMPs

29 Add New and Proposed Urban Land BMPs

30 Re-Run the Model with Edited Input File

31 Compare New Loads with Initial Loads

32 Before and After Load Comparisons With requirement for 26% reduction of TP: Required P reduction = 3188 kg * 0.26 = 829 kg Target load = = 2359 kg New TP load with BMPs = 2087 This is below the target load of 2359 Actual reduction was about 35% Re-running the model using the BMP Editor can be repeated as necessary to evaluate a range of BMP options and potential load reductions

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34 Urbanized Areas

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36 MapShed available at: Data currently available for PA, NY, and New England User manual describes process for creating data in other areas Video tutorials also available for download MapShed soon to be available through a web application (summer 2016)

37 Questions?

38 Watershed Treatment Model 1. Overview of the WTM Background Terminology Model Structure (Versions) 2. Example Application

39 What is the WTM? Simple Spreadsheet-Based Model Predicts Annual Rates of TN, TP, TSS, Fecal Coliform and Runoff Volume Four Major Components Sources Practices (Existing) Practices (Future) New Development WTM Overview

40 WTM Terminology Primary Sources Secondary Sources Management Practices Discount Factors WTM Overview - Terminology

41 Primary Sources Determined entirely from land use/cover Residential Commercial Industrial Forest Rural WTM Overview - Terminology

42 Secondary Sources Cannot be calculated solely by land use Secondary Sources in the WTM: Sanitary: CSOs, SSOs, OSDSs, Illicit Connections Channel Erosion Livestock Marinas Road Sanding Point Sources WTM Overview - Terminology

43 Existing Management Practices Structural: ponds, swale, LID, etc. Turf Management Erosion and Sediment Control Catch Basin Cleanouts Pet Waste Education Street Sweeping Riparian Buffers Marina Pumpout Station WTM Overview - Terminology

44 Future Management Practices Most Existing Practices, plus Lawn Care Education Urban Downsizing, Redevelopment Stream Restoration OSDS Education, Repair, or Retirement Stormwater Retrofit (Structural Practices) Illicit Discharge, CSO, and SSO Repairs Point Source Reduction

45 Discount Factors Ideal load reductions can rarely be achieved Lack of space Imperfect practice application Inability of programs to be completely effective Discount factors "discount" load reductions to account for less than perfect application of practices. WTM Overview - Terminology

46 Example: Erosion and Sediment Control (ESC) Base Conditions Load from uncontrolled construction is 1000 lb TSS/year Practices can achieve 70% effectiveness (base efficiency), or 700 lb/year WTM Overview - Terminology

47 ESC Discount Factors BUT Only 80% of Sites are Regulated Down to 0.8*700, or 560 lbs/year A combination of poor installation and maintenance reduces practice implementation/effectiveness by 25% Down to 0.75*560, or 420 lbs/year WTM Overview - Terminology

48 WTM 2013 Version Two Versions WTM Custom Spreadsheet model Easily adapted, but Lots of information presented at one time, so Not easy to pick up and use WTM Off the Shelf Spreadsheet model Incorporates more features to make it more user friendly, but While we tried to make it adaptable, you CANNOT ADD MORE ROWS This might make it difficult to adapt for some applications WTM Overview Model Structure

49 WTM Off the Shelf Worksheets Input Sheets Sources Existing Management Practices Future Management Practices New Development Output Sheets Results Results Unlocked Other Sheets Defaults Calculations WTM Overview Model Structure

50 Example: Mill Creek in Springettsbury Overview Used Land Use Data from the Mill Creek Watersehd in Springettsbury Made assumptions to estimate other sources. Example options to reduce pollutant loads.

51 Sources and Watershed Data On the Sources tab Select the potential pollutant sources. Basic Watershed Data

52 Primary Sources: Input Data Use GIS Data to identify land use and soils in the watershed. Land Use should be zoning classes (e.g., High Density Residential, etc.)

53 Primary Sources: WTM Data in Land Use Categories Impervious cover/other data Results in a loading rate.

54 Secondary Sources Include: Illicit Connections CSOs Channel Erosion Channel Erosion 3 Methodologies

55 Existing Practices Documents existing practices in the watershed In this case, only accounted for turf management.

56 Future Practices Identify Options Lawn Care Education Pet Waste Education Stream Restoration Stormwater Retrofits Illicit Connection Removal CSO/SSO Repair

57 Future Practices: Enter Extent Some Notes Different types of data depending on the practice. Some practices have different options available.

58 Example: Stream Restoration Two Options: Base on miles stabilized Identify individual projects

59 Results: Output Options Can Display: Source Loads Loads with Existing Practices Benefits of Existing Practices Benefits of Future Practices Loads with Future Practices Loads with new Development

60 Results: Summary

61 Results: Benefits of Future Practices

62 Other Tabs (not used) New Development Output (Unlocked) Defaults Calculations

63 Download files at: WTM Is on OWL -watershed- library/cat_view/65- tools/91-watershedtreatment-model

64 Questions?

65 Chesapeake Assessment and Scenario Tool (CAST) & Chesapeake Bay Facility Assessment Scenario Tool (BayFAST) 65

66 Overview Designed as simple planning tools Complex calculations and information hidden behind the interface Users only need to know general information Commonly used for Milestones NFWF proposals and reports 319 Plans WLAs for MS4s Nutrient and sediment local TMDL development and watershed management plans

67 Features Designed provide local jurisdictions with a tool to provide evaluate strategies for the Chesapeake Bay TMDL. The load calculations performed by CAST are identical to the current Bay Model. The tools use the same assumptions and calculation methods as the Bay Model.

68 Typical Uses Target the highest loading land uses by looking at the baseline lb/acre using a no BMP scenario. Choose BMPs that have the highest load reductions/efficiencies. Comparing costs for various BMP scenarios. Test cost-effectiveness of adopting alternative implementation strategies.

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72 Land Use Download Includes: Land river segment Land use Land Use abbreviation Total acres in each category FacilityName Landuse ShortName Acres Webcast MS4 animal feeding operations afo Webcast MS4 concentrated animal feeding operations cfo Webcast MS4 alfalfa alf Webcast MS4 regulated construction rcn Webcast MS4 regulated extractive rex Webcast MS4 forest for Webcast MS4 hightill without manure hom Webcast MS4 harvested forest hvf 1.02 Webcast MS4 hightill with manure hwm Webcast MS4 hay without nutrients hyo Webcast MS4 hay with nutrients hyw Webcast MS4 regulated impervious developed rid Webcast MS4 nonregulated impervious developed nid 0 Webcast MS4 pasture pas Webcast MS4 regulated pervious developed rpd Webcast MS4 nonregulated pervious developed npd 0 Webcast MS4 degraded riparian pasture trp 6.35 Webcast MS4 nursery urs Webcast MS4 water wat Webcast MS4 CSS pervious developed cpd 0 Webcast MS4 CSS impervious developed cid 0 Webcast MS4 CSS extractive cex 0 Webcast MS4 CSS construction ccn 0 Webcast MS4 nonregulated extractive nex 0

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75 Urban BMP Scenario

76 Select BMP

77 Apply BMP to Land Use

78 BMP Data

79 Cost Data Download Sector Bmp Full Name Lifespan Years Cap. Capital Unit O&M O&M unit Opportu nity Opp. Unit Urban Abandoned Mine Reclamation $/acre 43$/acre/year 0$/acre Urban Advanced Grey Infrastructure Nutrient Discovery Program Urban Forest Conservation 1 0$/acre 0$/acre/year 0$/acre Urban Impervious Surface Reduction $/acre $/acres/yea 3610r 50000$/acre Urban Urban Growth Reduction 75 0$/acre 0$/acre/year 0$/acre Urban Forest Buffers $/acre 0$/acre/year 0$/acre Urban Grass Buffers $/acre 0$/acre/year 0$/acre Urban Stream Restoration $/ft 8.6$/feet/year 0$/feet/year Urban Dirt & Gravel Road Erosion & Sediment Control - Driving Surface Aggregate + Raising the Roadbed $/ft 0$/feet/year 0$/feet/year Urban Shoreline Management $/ft 0$/feet/year 0$/feet/year Urban Street Sweeping Pounds $/lbs 0.11$/lbs/year 0$/lbs Urban Wet Ponds and Wetlands 50 $/acres treated $/acre treated/yea 63.02r $/acre treated Urban Dry Detention Ponds and Hydrodynamic Structures 50 $/acres 10281treated $/acre treated/yea 165r 635$/acre treated Urban Dry Extended Detention Ponds 50 $/acres treated $/acre treated/yea 54.77r $/acre treated Infiltration Practices w/o Sand, Veg. - A/B soils, $/acres $/acre treated/yea Urban no underdrain treated r $/acre treated Urban Infiltration Practices w/ Sand, Veg. - A/B soils, no underdrain $/acres treated $/acre treated/yea r $/acre treated $/acres $/acre treated/yea

80 Results

81 Loads from Each Sector

82 Comparing Scenarios

83 Percent Change

84 File Download

85 Summary BayFAST & CAST scenarios closely replicate the results of the Chesapeake Bay Model. Uses CBP-approved BMPs and efficiencies Consistent with the CBP Phase Watershed Model and updates Users may quantify the impacts of various management actions designed to be useful to people with a general knowledge of BMPs. Available on-line to users with a login and password (Free)

86 Questions?

87 Mapshed Website Download tool and base GIS files Instructional Videos Documentation Webcast Resources Watershed Treatment Model - CAST Website BayFast Website

88 Questions for Pennsylvania DEP

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