13a Source Assessment – Nonpoint Sources Using BSLC

1. 13aSource Assessment – Nonpoint Sources Using BSLC Virginia Tech Biological Systems Engineering 2013 DEQ TMDL Workshop

2. Nonpoint Sources – Identify the nonpoint sources typically considered in bacteria TMDL development Pollutant Source Characterization - Understand the steps taken to characterize the nonpoint sources Pollutant Source Simulation – Recognize the simulation of nonpoint sources in an HSPF model Overview/Objectives

3. Nonpoint Sources

4. Livestock • Beef cattle, dairy, horses, sheep, goats, poultry • Wildlife • Deer, beavers, muskrats, raccoons, ducks, geese, turkeys • Human • Straight pipes, leaking septic systems • Pet • Dogs Population Inventory - Bacteria

5. Pollutant Source Characterization

6. Estimates GIS Census No Expert Group Producers Agencies Trappers Pollutant Load Estimates Consensus Yes Stakeholders Pollutant Source Characterization

7. Pollutant Source Characterization Identify Sources (Point/ Non-point) Inventory sources Quantify waste and production rates Account for storage and management Distribute loads over space and time Input to model

8. No. of farms + average herd size • Agricultural Census • Direct count • Farmer survey • Producer organizations • Previously mapped data: • Digital ortho-photo • Topographic maps • E-911 data • FSA aerial photographs • Adjust estimates with feedback from local stakeholders Population Inventory - Livestock

9. USDA – NASS (National Agricultural Statistics Service) Augusta County County Ag Census Data Rockbridge County

10. Species selected in conjunction with local agency personnel and citizen input • Population estimates based on: • Literature values of species population densities • GIS delineations of suitable habitat areas • Virginia Department of Game & Inland Fisheries (DGIF) • Adjust estimates with feedback from local stakeholders Population Inventory - Wildlife

11. Example All areas within 400m of perennial streams, excluding loafing lots and pastures Raccoon Population Estimate Suitable habitat = 15,272 acres Population density = 1/ 13 acres Population estimate = 1,175

12. Problem Site Definition • Non-sewered, older residences, close to streams • Population: census data by tract • Other Spatial Data • E-911 data • Topographic maps (revision dates) • Local Planning and Health Departments • Streams Population Inventory - Human

13. Census Block Groups

14. E911 Structures Data

15. Population Inventory: Pets • Local Veterinarians and Kennels • Dog Licenses • ‘Unit Pet’ Estimate

16. Pollutant Source Characterization Identify Sources (Point/ Non-point) Inventory sources Quantify waste and production rates Account for storage and management Distribute loads over space and time Input to model

17. For individual animal types • Daily waste production (gm/head-day or gm/AU-day) • FC density (count or cfu/gm) • Daily FC Produced(cfu/head-day) • Data Sources • ASAE Standards • Published research • Site-specific sample analysis • MidWest Plan Service • Previous FC TMDLs Quantify Waste and Production Rates

18. Pollutant Source Characterization Identify Sources (Point/ Non-point) Inventory sources Quantify waste and production rates Account for storage and management Distribute loads over space and time Input to model

19. Type of manure storage (liquid, solid, poultry) No. of days of available storage No. or percent of farms with each storage type Percent of manure collected from various animal types Manure Storage Effects on Availability for Land Application

20. Waste application schedule including Amount or fraction of waste applied Month(s) of application Type of land use receiving the waste Application rates Type of application (incorporated or surface-applied) Manure Management Effects on Availability for Land Application

21. Pollutant Source Characterization Identify Sources (Point/ Non-point) Inventory sources Quantify waste and production rates Account for storage and management Distribute loads over space and time Input to model

22. Percent of time in confinement Percent of time in loafing lot Differential stocking densities in overgrazed, unimproved, and improved pasture categories Seasonal changes in population Percent of pastures or animals with access to streams Distribution of Livestock over Space and Time

23. Pollutant Source Characterization Identify Sources (Point/ Non-point) Inventory sources Quantify waste and production rates Account for storage and management Distribute loads over space and time Input to model

24. Matrices for Individual FC Sources deer raccoon septic systems beef dairy buildup MODEL

25. Building Inputs • Using the Bacteria Source Load Calculator • Requires GEN-INFO under the PERLND block of the UCI file to be completed • Requires accumulation of the information in following slide • Exercise!

27. Intro Screen

28. Open Existing Watershed

32. Animal Inputs

33. Land Use

34. Human

35. References

36. Monthly Variables

37. Monthly Variables

38. Land Receiving Manure

39. ACCUM Table

40. Land Use Table Land Use areas were entered in a previous step. This worksheet allows the user to enter the TMDL descriptions that match the GEN-INFO land use descriptions in the UCI file.

41. Distribution of Houses and Pets

42. Source Assessment Breakdown

43. ACCUM and SQOLIM Factors

44. Path to UCI

45. Pervious and Impervious Land Uses Enter the percent perviousness for each urban land use category.

46. Direct Deposit Tables

47. Direct Deposit Dates

48. Results

49. Bacteria Source Load Calculator Outputs • ACCUM table • SQOLIM table • MUTSIN files

50. Questions/Comments