City of Alexandria Stormwater Management Program Environmental Policy Commission

September 30, 2019 Agenda

• Program Recognition: WEF Award • Program Activities and Achievements • Regional and Local Focus • Stormwater Financing • Floodplain Management • Education and Outreach • Water Quality Co-Benefits • Chesapeake Bay TMDL Action Plan Strategies

2 WEF MS4 Award 2019 Phase II Municipal Separate Storm Sewer System (MS4) and Stormwater Management Program • Recognized by the Water Environment Federation’s (WEF) National Municipal Stormwater and Green Infrastructure Awards Program in the following categories: • Overall Highest Score for Phase II MS4 Locality • Silver Level: Innovation • Gold Level: Program Management • Previously recognized

3 Regional and Local Focus

• NVRC - Multiple • MWCOG Water Resources Technical Committee • Potomac River Roundtable • NoVA Coastal Storm Risk Management Study • Salt Management Strategies (SaMS) • Virginia Municipal Stormwater Association (VAMSA) • Chesapeake Bay Urban Stormwater Workgroup

4 Stormwater Financing

• ½ Cent tax set aside in FY 2010 • Stormwater Utility adopted May 2017 • Credit Policy • First Billed CY 2018 • What does it fund? • Reduce stormwater pollution • Reduce flooding • Regulatory compliance • Operations and maintenance • Stormwater Local Assistance Fund (SLAF) State Matching Grants

5 Floodplain Management Program • Exceeds federal minimum requirements of National Flood Insurance Program (NFIP) • Community Rating System (CRS) ‘6’ Rating • Reduce flood damage to insurable property • Strengthen and support the insurance aspects of the NFIP • Encourage a comprehensive approach to floodplain management • Reduced flood insurance premiums

6 Education and Outreach & Public Involvement • Alexandria Earth Day • Student Environmental Action Showcase (SEAS) • NVRC Clean Water Partners • NoVA Rain Barrel Partners Program • Volunteer Stream Monitoring • Stream Cleanups • Multi-platform messaging • Work with ACPS • Master Gardeners • Public presentations 7 Stormwater BMP Retrofits Co-Benefits

Habitat Water Quality Natural Characteristics

Native Aesthetics Bank and Vegetation Channel Stability

8 Chesapeake Bay TMDL

• 2010: Chesapeake Bay TMDL • Nutrient and sediment ‘pollution budget’ or ‘clean up mandates’ • Enforced via MS4 Permit • 2013 – 2018: 5% • 2018 – 2023: 40% • 2023 – 2028: 100%

9 Chesapeake Bay TMDL Phase 1 Action Plan Strategies • BMP Retrofits on City Properties • Lake Cook Regional Pond Retrofit • Redevelopment • Eisenhower Pond 19 (Parc Meridian) • Additional – “All of the Above” • Urban Stream Restoration • Urban Nutrient Management • Tree Planting and Forest Buffers • Bi-Lateral Trading (RiverRenew)

10 Stormwater BMPs Retrofits on City Properties • Four Mile Run Wetland • Four Mile Run Park: Bioretention and Pavers • Charles Barrett ES: Bioretention and Rain Barrels • Fire Station #206: StormFilter • Windmill Hill Living Shoreline • Burke Library: Bioretention • Maury ES: Bioretention

11 Stormwater BMPs

Green Roof, Duncan Library Four Mile Run Wetland

Permeable Pavers 12 and Bioretention Cell, 4MR Park Bioswale, Glebe Road Lake Cook Retrofit

13 Lake Cook Retrofit

14 Chesapeake Bay TMDL Action Plan

15 Chesapeake Bay TMDL Phase 2 Action Plan Strategies • Ben Brenman Regional Pond Retrofit • City-Wide Green Infrastructure Prioritization • Urban Stream Restoration Program • Lucky Run Stream Restoration • Strawberry Run Stream Restoration • Taylor Run Stream Restoration • ‘All of the Above’

16 Ben Brenman Pond Retrofit

17 City-Wide Green Infrastructure Prioritization • City-Wide approach to implementation • Consideration for prioritization of all potential locations • Green Infrastructure Memo to Industry

18 Urban Stream Restoration Program 1. Protect, stabilize, and improve the City’s waterways 2. Address Chesapeake Bay clean up mandates (Action Plan strategy) 3. Consistent with the City’s Environmental Sustainability Strategic Goal

Physical Chemical Biological

19 Lucky Run

20 Lucky Run

21 Strawberry Run near Taft Avenue

22 Strawberry Run

23 Taylor Run near Chinquapin Park

24 Taylor Run

25 Urban Stream Restoration Projects Lucky Run

•~900 LF •SLAF Matching Grant: $668,720 •Archaeology and Design Complete •Construction: Spring/Summer 2020 Winter 2020/2021

Strawberry Run

•~900 LF •SLAF Matching Grant: $800,000 •60% Draft Design Complete •Archaeology Phase I Complete, Phase II in October •Begin Construction Estimated Fall/Winter 2020

Taylor Run

•~1900 LF •SLAF Matching Grant: $2.255M •Survey and Phase I Archaeology in Progress •40% Design December 2019 •Begin Construction Estimated Early 2021

26 Contacts Jesse E. Maines, MPA, PMP Division Chief, Transportation and Environmental Services, Stormwater Management [email protected] 703.746.4643

Joni Calmbacher, PE, CFM Civil Engineer III T&ES Stormwater Management [email protected]

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