UW-MADISON GREEN INFRASTRUCTURE PLAN

Transcription

1 UW-MADISON GREEN INFRASTRUCTURE PLAN Gary Brown, UW-Madison David Wolmutt, SmithGroupJJR GROWING SUSTAINABLE COMMUNITIES OCTOBER 3, 2017

2 PRESENTATION AGENDA Project Context Evolution of Campus Green Infrastructure Green Infrastructure Planning Process Plan Overview Implementation and Next Steps University of Wisconsin-Madison

3 DIVIDER SLIDE TITLE PROJECT CONTEXT

4 REGIONAL SETTING URBAN PLANNING AREA Lake Mendota Watershed Urbanized Area (typ) UW-MADISON Lake Mendota Lake Monona Watershed Lake Monona City of Madison Dubuque Madison

5 WATERSHED SETTING Rock River Watershed 1,900 sq. mi Lake To Rock River Kegonsa Lake Waubesa Madison Lake Monona Lake Wingra Lake Mendota UW-Madison Madison VISION RENDERING 1,040 acre campus area (936 acres owned) 4.3 miles of Lake Mendota shoreline

6 CAMPUS SETTING -DRAINAGE PATTERNS Areas: Campus Area 1,040 Ac MS4 Permit Area 658 Ac 63% Tributary to Willow Creek 134 Ac 12% Tributary to Lake Mendota 668 Ac 65% Tributary to Lake Monona 238 Ac 23% Outfalls: Willow Creek 15 Lake Mendota 34 City Storm Sewers 40+

7 CAMPUS SETTING UW CAMPUS FEATURES

8 UW-MADISON MASTER PLAN UPDATE Developed as a tool to guide the orderly growth and development of the campus, addressing: necessary transportation and infrastructure upgrades, enhanced campus circulation and connectivity, and protection and enhancement of important open spaces, and historic and cultural landscapes. UNIVERSITY OF WISCONSIN-MADISON MASTER PLAN UPDATE GREEN INFRASTRUCTURE MASTER PLAN 8

9 MASTER PLAN UPDATE COMPONENTS Update the 2005 Utilities Master Plan Update the 2005 Long Range Transportation Plan Confirm and Update Planning Principles, Goals & Recommendations from 2005 Master Plan Develop a Comprehensive Landscape Master Plan Develop a Stormwater Management Plan UNIVERSITY OF WISCONSIN-MADISON MASTER PLAN UPDATE GREEN INFRASTRUCTURE MASTER PLAN 9

10 A HIGHLY COLLABORATIVE EFFORT.. Executive Leadership Team Campus Planning Steering Committee Technical Coordinating Committee Open Houses Focus Groups Community Meetings Online Discussion UNIVERSITY OF WISCONSIN-MADISON MASTER PLAN UPDATE GREEN INFRASTRUCTURE MASTER PLAN 10

11 GREEN INFRASTRUCTURE PLAN INTEGRATION STRATEGY MASTER PLAN Create Working Landscapes that will achieve campus sustainability objectives while providing a framework for regulatory compliance. 1. Constructed Wetlands 2. Raingardens & Bioswales 3. Non-Occupied Green Roofs

12 DIVIDER SLIDE TITLE EVOLUTION OF CAMPUS GREEN INFRASTRUCTURE

13 PRE 1970 S --- DIRECT DRAINAGE TO LAKES AND LOCAL STORM SEWERS LAKE MENDOTA Storm Outfall (typ) UW-MADISON CAMPUS

14 1980 s IMPLEMENTION OF CONVENTIONAL STORMWATER MANAGEMENT FEATURES Nielsen Pond

15 GROWING SUSTAINABILITY ETHIC LEADS TO PROMULGATION OF A WIDER ARRAY OF BMP S <20 Stormwater Management Practices CAMPUS BEST MANAGEMENT PRACTICES 2008

16 2010 PRESENT RAPID EXPANSION OF CAMPUS GREEN INFRASTRUCTURE Wet Detention Pond 40.35% Street Cleaning 16.63% % of Total TSS Captured Porous Pavement 1.99% Biofilter 24.14% Catchbasin Cleaning 1.35% Filter Strips 0.24% Grass Swales 15.93% Hydrodynamic Device 0.44% CAMPUS BEST MANAGEMENT PRACTICES 2008 >80 Stormwater Management Practices

17 Green plaza over parking EVOLVING CAMPUS GI APPROACHES 80+ individual BMP s exist in 2015 Permeable pavement Biofiltration Underground detention Green roof

18 SOME CURRENT CAMPUS GREEN INFRASTRUCTURE PRACTICES Wisconsin Institute for Medical Research - Green roof - Biofiltration areas

19 SOME CURRENT CAMPUS GREEN INFRASTRUCTURE PRACTICES Cogen Biofiltration Ponds

20 SOME CURRENT CAMPUS GREEN INFRASTRUCTURE PRACTICES DeJope Residence Hall - Permeable pavement, rain gardens & a large green roof

21 DIVIDER SLIDE TITLE GREEN INFRASTRUCTURE PLANNING PROCESS

22 GREEN INFRASTRUCTURE PLAN GOALS 1 Implement stormwater practices and policies that contribute to a healthy Yahara Lakes System Update the campus stormwater policy to encourage green infrastructure Promote best management practices to maximize benefits Incorporate ecosystem services to those BMP s Consider beneficial reuse of rain water when possible Remove or disconnect redundant impervious areas Implement multi-site practices Recommend large-scale innovative green practices that can be implemented incrementally Enforce/assist policy compliance for site redevelopment projects Implement strategy to comply with TMDL through evaluation of costs and land use

23 GREEN INFRASTRUCTURE PLAN GOALS 2 Integrate research and learning into the campus stormwater management approach Leverage the UW s intellectual and creative capacity in a learning laboratory approach to green infrastructure Promote practices that are creative, visible, and accessible for education and community awareness Monitor green infrastructure performance on campus to inform evidence-based decision making

24 GREEN INFRASTRUCTURE PLAN GOALS 3 Connect campus stormwater management to the wider Yahara Lakes watershed community Identify opportunities to work collaboratively with others (e.g. watershed-based Adaptive Management) Support ways to engage the UW-Madison community around stewardship efforts Emphasize the importance of good public relations outreach to promote sustainability efforts across campus

25 REGULATORY DRIVERS COMPLIANCE WITH TMDL POLLUTANT LOAD ALLOCATION MANDATE TMDL = Total Maximum Daily Load Mandated Watershed-Wide Pollutant Reduction Existing Pollutant Load to the Rock River Acceptable Pollutant Load to the Rock River UW-Madison Allocation Reduction allocation to individual permittees discharging to the Rock River and Tributaries 1 Existing Pollutant of Concern Load (POC) Desired Pollutant of Concern Load (POC)

26 REGULATORY MANDATE UW-MADISON COMPLIANCE REQUIREMENTS Implement Practices to Achieve 73% Total Suspended Solids reductions compared to the no controls condition. 61% Phosphorus reductions compared to the no controls condition. Practices may include Green Infrastructure, Stormwater Controls, Land Use Modifications, etc.

27 REGIONAL STRATEGY ADAPTIVE MANAGEMENT APPROACH Collaboration within the watershed (upstream of the Nine Springs Creek Discharge Point) to achieve water quality standard Point sources + non-point sources work together to reduce overall pollutant loading in watershed Rock River TMDL Reach 64 Discharge Point (Nine Springs Creek)

28 CAMPUS SITE ANALYSIS Watersheds Storm sewers Topography & slopes Soils Natural features Land use & source areas

29 CAMPUS LAND USE ASSESSMENT Existing Impervious Area Traffic (typ) Existing Impervious Area - Non-traffic (typ) Existing Imperviousness - 48% (Within Campus Boundary)

30 TSS Loading (lbs/ac/year) COMPUTER MODELING TO IDENTIFY POLLUTANT SOURCE HOT SPOTS AND ESTIMATE POLLUTANT LOADING Estimated 168,000 lbs annual TSS loading without BMP s in the permit area 1, Source Area Type

31 EVALUATE EFFECTIVENESS OF CURRENT STORMWATER PRACTICES Estimated 53,000 lbs of TSS (31%) and 143 lbs of TP captured annually by campus BMP s

32 DIVIDER SLIDE TITLE PLAN

33 POTENTIAL GREEN INFRASTRUCTURE OPPORTUNITY IDENTIFICATION 1. Stormwater Performance Standards and Policies 2. Multi-Site, Larger Scale BMP s 3. Site Based BMP s 4. Opportunities with Future Land Use Changes 5. Opportunities with Utility Improvement Projects

34 RESULTING PLAN Identified 10 Multi-Site BMP s 7 Site-based BMP s

35 GREEN STREETS Strategy 1. Treat first flush 2. Discharge treated water to storm sewer via drain tile 3. Minimize infiltration from streets (chlorides) Rush University, Chicago, IL Plymouth, MA

36 WETLAND ENHANCEMENT AND CREATION DRAINAGE AREA SERVED: 16 AC CONTROL STRUCTURE TSS CAPTURED: 3,900 LBS/YR

37 WATERWAY ENHANCEMENT AND REHABILITATION WILLOW CREEK DRAINAGE AREA SERVED: 8.3 AC TSS CAPTURED: 4,100 LBS/YR

38 WILLOW CREEK REHABILITATION Before

39 WILLOW CREEK REHABILITATION After

40 BIOFILTRATION DRAINAGE AREA SERVED: 9.9 AC TSS CAPTURED: 3,100 LBS/YR

41 UNDERGROUND DETENTION AND TREATMENT DRAINAGE AREA: 32 AC TSS CAPTURED: 7,400 LBS/YR

42 HYBRID SURFACE AND UNDERGROUND TREATMENT DRAINAGE AREA SERVED: 11 AC TSS CAPTURED: 2,500 LBS/YR

43 SOUTH CAMPUS QUAD URBAN, ARCHITECTURAL TREATMENTS DRAINAGE AREA SERVED: 16 AC TSS CAPTURED: 4,300 LBS/YR D

44 SOUTH CAMPUS QUAD & DAYTON STREET Before

45 SOUTH CAMPUS QUAD & DAYTON STREET After

46 EVALUATE POTENTIAL IMPACTS OF LAND USE MODIFICATIONS ON FUTURE POLLUTANT LOAD Estimated Change in TSS Loading by Land Use Modification Decrease in TSS Load (lbs/yr) Increase in TSS Load (lbs/yr) Proposed land use changes would result in approximately 8,000 lbs net TSS reduction (approximately 5% of total TSS load).

47 ESTIMATE POTENTIAL POLLUTANT REDUCTIONS FROM REGIONAL PRACTICES Nielson Pond Reroute Marsh Ln. Wetland Treatment Near East Underground Chamber Observatory Hill Wetland Treatment Superblock Underground Treatment Potential regional practices could capture approximately 25,800 lbs of TSS per year. VA Biofiltration Willow Creek Wetland Horse Barn Biofiltration TSS Acres TSS Load Reduced BMP Treated (lbs/yr) (lbs/yr) % of Total Observatory Hill ,160 3, % Marsh Lane ,998 2, % VetBio , % Horse Barn ,256 1, % Willow Creek , % Near East Athfield ,109 9, % Superblock ,568 2, % Reroute Nielson , % Grand Total ,515 25,891

48 QUANTIFY POTENTIAL POLLUTANT REDUCTIONS RESULTING FROM PROPOSED PRACTICES 31% 5% 14% 23% - 27%

49 For More Information: Gary Brown, PLA, FASLA Director, Campus Planning & Landscape Architecture UW-Madison, Facilities Planning & Management David Wolmutt, P.E. Senior Civil Engineer & Project Manager SmithGroupJJR QUESTIONS? THANK YOU