Presentation by Baltimore City and County on Trash TMDL for certain portions of the Patapsco River. Presented at June 2015 Baltimore Urban Waters Partnership meeting.

1. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 1
Total Maximum Daily Loads of Trash and Debris for the
Middle Branch and Northwest Branch Portions of the
Patapsco River Mesohaline Tidal Chesapeake Bay
Segment, Baltimore City and County, Maryland
Urban Waters Federal Partnership
June 9, 2015
“Trash TMDL”

2. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 2
Overview
• Approved by the EPA January 5,
2015.
• Baltimore City and County each
have one year to develop an
Implementation Plan
• The TMDL is for the Middle Branch
and Northwest Portions of the
Patapsco River
• The TMDL recognizes that trash
comes from upstream, so portions
of the Baltimore Harbor and the
entire Jones Falls and Gwynns Falls
watersheds are included.

3. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 3
TMDL Reduction
Watershed
Annual WLA
(lbs/yr)
Annual TMDL
(lb / yr removed)
Daily WLA
(lb / day)
Daily TMDL
(lbs/day removed)
Baltimore Harbor 42,869.4 45,012.9 117.4 123.3
Gwynns Falls 93,519.3 98,195.3 256.2 269.0
Jones Falls 81,107.0 85,162.4 222.2 233.3
Total City 217,495.7 228,370.6 595.8 625.6
Watershed
Annual WLA
(lbs/yr)
Annual TMDL
(lb / yr removed)
Daily WLA
(lb / day)
Daily TMDL
(lbs/day
removed)
Gwynns Falls 72,831.6 76473.2 199.5 209.5
Jones Falls 45,399.4 47669.4 124.4 130.6
Total County 118,231 124,142.6 323.9 340.1

4. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 4
TMDL Reduction
• The TMDL requires 100% removal of the baseline load, which is based on
WEIGHT (lbs/yr removed). The baseline load is based on data collected in
2010 and 2011.
• The baseload is a combination of Waste Load Allocation (WLA), point
source; Load Allocation (LA), non-point source; and Margin of Safety (MOS),
5%.
• Only the WLAs assigned to the MS4 permit will be used to determine the
reduction goal for compliance with the TMDL, and therefore the City’s or
the County’s MS4 permit.

5. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 5
Trash Reduction
• The TMDL does not prescribe what measures should undertake to meet
the 100% baseline load reduction
• Structural (trash interceptors) and non-structural (street sweeping,
education and outreach) can both be employed.
• The TMDL states, “…any upstream practices that are already in place [as of
2011]…are inherently captured in this baseline rate. Therefore, the TMDL
value to be removed must be in addition to trash already being removed
when the baseline sampling was conducted.”
• WLA calculation methodology will need to be established
- What can be counted (enhanced / new practice, geography)
- Methodology accounting for ‘trash”
- Efficiency of removal

6. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 6
January-May June July-August September October November December
1st Draft and
Review of
Sections 1-8
Coordinate
with NGOs
Complete
Sections 9-11
and 2nd Draft of
Sections 1-8
Submit Draft
to MDE and
BWB for
Review
Prepare
3rd Draft
30 Day
Public
Comment
Period
Revise Plan
and
Prepare
Comment
Response
Document
Baltimore County Schedule
Plan Outline: Section 1: Introduction
Section 2: Legal Authority, Policy, and Planning Framework
Section 3: TMDL Summary
Section 4: Literature Summary
Section 5: Watershed Characterization
Section 6: Summary of Existing Data
Section 7: Summary of Existing Restoration Plans
Section 8: BMP Efficiencies
Section 9: Implementation
Section 10: Assessment of Implementation Progress
Section 11: Continuing Public Outreach Plan

7. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 7
• 2 Phase Plan
• Phase 1:
– Focus on Education and Outreach, Incentive Programs and Enforcement
– Continue Existing Programmatic Actions County Wide (Street Sweeping, Storm
Drain Cleaning, Clean Green 15, Partnerships with NGOs, Enforcement)
– Investigate the Potential for Expanding Programs and Developing new
Programs to be Piloted in TMDL Area
– Adaptive Plan : Investigate Unknowns Throughout Implementation Process
and Adapt
• Contingent Phase 2:
– Trash Trapping Devices – More Costly
– Review the Need at 10 Years
Baltimore County Preliminary Strategy
Phase
1
Phase
2
Monitor and Adapt
Goal

8. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 8
Baltimore City Schedule
April May June July August Sept Oct Nov Dec
1st draft
(30%)
Coordinate with
NGOs
2nd draft (60%) NGOs 3rd draft/
MDE review
Public
Comment
Final WIP
SWAC SWAC SWAC
60% Draft Section 5. Implementation Plan Development
Section 6. Projects, Programs, and Partnerships
Section 7. Tracking and Reporting
Section 8. Adaptive Management
Section 9. Financial Strategy

9. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 9
Baltimore City Preliminary Strategy
Projects
• Modified Inlets
• Debris Collectors
Programs
• Pollution Prevention (Education)
• Street and Alley Sweeping
• Preventative Inlet Cleaning
• Enforcement
Partnerships
• Volunteer Clean-ups
• MPA Mitigation
• Legislation
Monitor /
Evaluate /
Adapt

10. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 10
ROLE OF URBAN WATERS?
• How does the Trash TMDL fit into the Urban Waters model?
• What are the opportunities for research / monitoring?
- Literature review
- Information sharing (Los Angeles River Watershed)
- Social marketing
- BES load reduction calculations / efficiencies research
• Urban Waters (entity) / various partners (ie BES?)

11. Baltimore City Department of Public Works
Baltimore County Environmental Protection and Sustainability 11
QUESTIONS / COMMENTS / RECOMMENDATIONS?
Baltimore County
Amelia Atkins
aatkins@baltimorecountymd.gov
410-887-5705
Baltimore City
Mark Cameron
mark.cameron@baltimorecity.gov
410-396-0732