The document outlines a presentation on Low Impact Development (LID) case studies. It provides details on several LID projects in Ontario, including the objectives and stormwater management strategies employed. The case studies cover a variety of project types, from institutional to commercial to residential developments. Challenges and lessons learned are also discussed, such as the importance of contractor education, maintenance programs, and protecting LID installations during construction.

1. 2012 Green Building Festival
EVERGREEN BRICK WORKS
LOW IMPACT DEVELOPMENT (L.I.D.) CASE STUDIES
OCTOBER 11, 2012
Mark Schollen
Principal
Schollen & Company Inc.
Landscape Architecture
Urban Design
Environmental Restoration
L.I.D. Design 1

2. Low Impact Development (L.I.D.) Case Studies
Building Green Infrastructure Design Essentials
– Multi-disciplinary team
 Engineers
 Architects
 Landscape architects
 Ecologists
– Integrated design process
– Multi-objective based approach
– Commitment to innovation
2012 Green Building Festival 2

3. York University Life Sciences Building,
Toronto
Objectives:
– Achieve restricted discharge rate
– Encourage infiltration
– Provide a source of non-portable water for irrigation
– Achieve LEED® requirements
NXL Architects / SSG Architects
Schollen & Company Inc.
3
R.V. Anderson Associates

4. York University Life Sciences Building, Toronto

5. York University Life Sciences Building, Toronto
Permeable pavements over rainwater harvesting tank

6. York University Life Sciences Building, Toronto
Permeable pavements over plaza over infiltration medium

7. York University Life Sciences Building, Toronto
L.I.D. integration with design inspiration

8. York University Sherman Health Research
Science Centre, Toronto
Objectives:
– Repurpose a former ice rink complex
– Moderate runoff rates
– Recycle concrete from ice pad
– Create an unique ecosystem
NXL Architects
Schollen & Company Inc.
8
R.V. Anderson Associates

9. York University Sherman Health Research Science Centre,
Toronto

10. York University Sherman Health Research Science Centre,
Toronto
Retrofitted and repurposed ice rink complex to create a new research centre building

11. York University Sherman Health Research Science Centre,
Toronto
Synthetic alvar / infiltration galley constructed using recycled concrete from ice rink

12. York University Sherman Health Research Science Centre,
Toronto
New pedestrian bridge over alvar to enhance connectivity to campus

13. Edwards Gardens Parking Lot, Toronto
Kylemore New Yorkton (Deacon Property),
Markham
Objectives:
– Establish compact medium density community
– Integrate infiltration galleries to moderate temperature
– Achieve enhanced water quality through creation of a “forested swamp”
Angus Glen Development
Schollen & Company Inc.
13
Stantec Consulting Group

14. Kylemore New Yorkton (Deacon Property), Markham
Infiltration Gallery
Infiltration Basin
Inlet to Infiltration Basin
Forested Swamp

15. Kylemore New Yorkton (Deacon Property), Markham
Considerations:
o Condominium model
allowed for flexibility to
integrate solutions
into streetscapes
o Compact built form
presented challenges
and conflicts with
utilities, fences, etc.
o More integrated
approach to construction would have been beneficial
o Draft plan approved prior to L.I.D. integration
o SWM techniques are amenities within the community

16. Edwards Gardens / TBG Sustainable Parking Lot,
Toronto
Objectives:
– Restore an existing degraded parking lot
– Integrate SWM – quality and quantity
– Enhance tree canopy
– Improve circulation and utility
– Position as complementary to TBG programs
Schollen & Company Inc.
RV Anderson Associates
City of Toronto
16
Toronto Botanical Garden

17. Edwards Gardens / TBG Sustainable Parking Lot, Toronto
Concept Plan

18. Edwards Gardens / TBG Sustainable Parking Lot, Toronto
Stormwater Management Plan
2
1
2
1 2
1 2
1 Biofilter Subsurface Flow
Outlet
2 Permeable Pavement Surface Flow

19. Edwards Gardens / TBG Sustainable Parking Lot, Toronto
Construction Process
Biofilter inlet and permeable paver Biofilter installation
installation

20. Edwards Gardens / TBG Sustainable Parking Lot, Toronto
Completed Installation
Permeable pavement at entrance Permeable pavement and biofilter
roundabout

21. Edwards Gardens / TBG Sustainable Parking Lot, Toronto
Completed Installation
Permeable pavement parking pads Extensive plantings to complement
and walkways TBG

22. Edwards Gardens / TBG Sustainable Parking Lot, Toronto
Challenges / Lessons Learned:
– Budget
 Basic resurfacing $800,000
 Sustainable parking lot $1.8 million
– Timing – relative to TBG programs
– Need to maintain parking capacity
– Retrofit project issues

23. The Great Lakes Chapter of the International Erosion Control Association
Honda Canada Campus,
Markham
Objectives:
– Minimize reliance on end-of-pipe SWM
– Optimize efficiency
– Utilize the landscape as a functional system
– Address practical considerations
– Reflect Honda’s corporate mission
– Achieve LEED Certification
ZAS / HOK Architects
SabourinGreen Infrastructure
The Kimble & Associates Ontario Coalition 23
Schollen & Company Inc.

24. Honda Canada Campus, Markham
Site Plan
Site Area = approx.27 ha
Building Area = 27,127m²

25. Honda Canada Campus, Markham
Stormwater Management Plan
OVERFLOW
POND
2
5
1 CONTROL
MH
RAINWATER
4 PDC HARVESTING
SYSTEM
2
R&D
3
3 Key
OFFICE 1. Rainwater
collection &
irrigation water
storage facility
3 2. Bio-filters –
Stormwater
2 runoff
3. Porous
pavement
4. Vegetated
swales
5. Overflow
storage area

26. Honda Canada Campus, Markham
Biofilter Plan

27. Honda Canada Campus, Markham
Biofilter Section

28. Honda Canada Campus, Markham
Selected Site Photos
Rainwater Harvesting Tank Natural Drainage
Permeable Pavement in Parking Lot Permeable Pavement in Forecourt Roundabout

29. Honda Canada Campus, Markham
Selected Site Photos
Granular Fitness Path and Drainage Swale
Paving and plants in Landscaped Outdoor
courtyard Eating Areas
Biofilter

30. Honda Canada Campus, Markham
Challenges / Lessons Learned:
– Contractor education is key
– Integration of utilities and infrastructure is critical
– Maintenance / management program is essential
– System must be protected during construction

31. Bill Crothers Secondary School, Markham
Objectives:
– Achieve pre to post development water balance
– Address off-site catchment area contribution
– Provide water for irrigation
– Utilize a treatment-train approach
– Enhance the Rouge River corridor
– Achieve recreational/educational program requirements
ZAS / HOK Architects
Schaefers Associates
31
Schollen & Company Inc.

32. Bill Crothers Secondary School, Markham
Concept Plan
Site Area = approx.12.25 ha

33. Bill Crothers Secondary School, Markham
Stormwater Management Strategy

34. Bill Crothers Secondary School, Markham
Stormwater Management Plan
STORMWATER WETLAND
WETLAND GROUNDWATER
RECHARGE ATTENUATION
HABITAT ENHANCEMENT
STORMWATER
MANAGEMENT PONDS
QUALITY AND
EROSION CONTROL
FIELD 1
FIELD 2
UNDERGROUND
STORAGE
RAINWATER
RECYCLING
SYSTEM
FIELD 2
BIOFILTERS
QUALITY AND ROOF AREA FLOWS
QUANTITY DIRECTLY TO RAINWATER
TREATMENT STORAGE FACILITY
FOR PARKING
LOT AREAS
FLOW
SPLITTER
VEGETATED SWALE
CONVEYANCE AND TREATMENT
FOR ENTRY ROAD
BIOFILTERS EXTERNAL DRAINAGE
SCHOOL QUALITY AND QUANTITY
BUILDING TREATMENT FOR ROADS 2 HA FUTURE URBAN
FUTURE HARD
AND FORECOURT DEVELOPMENT
SURFACE COURTS

35. Bill Crothers Secondary School, Markham
Selected Site Photos
Storage Pipe Construction Biofilter
Parking Lot with Biofilter Artificial Turf Sports Field and Running Track
with Rainwater Harvesting System Beneath

36. Bill Crothers Secondary School, Markham
Challenges / Lessons Learned:
– Contractor education is key
– Protection of installations during construction is essential
– Maintenance – inadequate maintenance can impact function
– Municipal standards stifle innovation

37. Edwards Gardens Parking Lot, Toronto
Dundas Street Commercial Site,
Mississauga
Objectives:
– Improve infiltration potential
– Enhance base flow contribution to Etobicoke Creek
– Improve extent of natural system along stream corridor
– Manifest LID technologies as amenities in the landscape
– Expedite the approval process
Fieldgate Commercial / Smart Centres
Counterpoint Engineering
Schollen & Company Inc.
37
Terraplan Landscape Architects

38. Dundas Street Commercial Site, Mississauga
Concept Plan

39. Dundas Street Commercial Site, Mississauga
Stormwater Management Plan
1 4
3
1 4
1 Biofilters 5
2 Attenuation Pond 1
3 Stormwater Fountain
4 Interpretive Pavilions Subsurface Flow
5 Vegetated Swale Surface Flow 2
Infiltration Tank / Rainwater Harvesting
Permeable Pavement

40. Dundas Street Commercial Site, Mississauga
The Avenue – Integrated SWM / Streetscape Design

41. Dundas Street Commercial Site, Mississauga
Storm Fountain Feature – Concept

42. Dundas Street Commercial Site, Mississauga
Sections

43. Dundas Street Commercial Site, Mississauga
Challenges / Lessons Learned:
– Reclamation of Brownfields site
 Soil contamination
 Dumped debris
– Extent of impervious cover – parking and building area
– Practical commercial requirements:
 Circulation
 Servicing / loading
 Visibility of retail tenants

44. Residential
Low Density
Community
Component
depth
cisterns
pavement
Rainwater
driveways
harvesting
Permeable
yard swales
L.I.D.
Rain gardens
Potential
Enhanced rear
Techniques
Increased topsoil
2012 Green Building Festival
Public
X
X
X
X
X
Private
X
X
X
Provision for 15% failure rate
X
Integration with sump pump system
X
Enactment of driveway by-law
Enactment of tree by-law
Private operation public regulation of outlet
Low Impact Development (L.I.D.) Case Studies
Ownership/Operation Scenario
Public ownership operation
X
X
X No maintenance required
X
Periodic maintenance (5-10 years)
X
Litter removal
X
Landscape maintenance
Annual inspection
Catchbasin clean-out
Winterizing
Maintenance Requirements
Clearing of roof drain
44
Infrequent sediment removal (10 years +)

45. Density
Medium
Residential
Community
Component
depth
cisterns
Biofilters
pavement
Rainwater
driveways
harvesting
Permeable
L.I.D.
Potential
Techniques
Increased topsoil
2012 Green Building Festival
Public
Public
X
X
X
X
Private
X
Provision for 15% failure rate
X
Integration with sump pump system
X
Enactment of driveway by-law
X
Enactment of tree by-law
Private operation public regulation of outlet
Low Impact Development (L.I.D.) Case Studies
Ownership/Operation Scenario
Public ownership operation
X
No maintenance required
X
X
Periodic maintenance (5-10 years)
X
Litter removal
Landscape maintenance
X
Annual inspection
Catchbasin clean-out
Winterizing
Maintenance Requirements
Clearing of roof drain
45
X
Infrequent sediment removal (10 years +)

46. Live-Work
Mixed-Use /
Community
Component
pavement
Rainwater
Permeable
Biofilters in
L.I.D.
canopy cover
parking areas
Potential
Enhanced tree
Techniques
Parking lot storage
harvesting cisterns
2012 Green Building Festival
Public
Public
Private
X
X
X
X
X
X
Provision for 15% failure rate
Integration with sump pump system
X
X
Enactment of driveway by-law
X
X
Enactment of tree by-law
Private operation public regulation of outlet
Low Impact Development (L.I.D.) Case Studies
Ownership/Operation Scenario
Public ownership operation
X
No maintenance required
X
X
Periodic maintenance (5-10 years)
X
Litter removal
Landscape maintenance
X
Annual inspection
X
Catchbasin clean-out
Winterizing
Maintenance Requirements
Clearing of roof drain
46
X
Infrequent sediment removal (10 years +)

47. Employment
Community
Component
pavement
Rainwater
Permeable
Stormwater
Biofilters in
L.I.D.
parking areas
Potential
Techniques
Roof top storage
Parking lot storage
harvesting cisterns
fountains / features
2012 Green Building Festival
Public
Public
X
X
X
X
X
X
Private
X
Provision for 15% failure rate
Integration with sump pump system
X
Enactment of driveway by-law
X
X
X
X
Enactment of tree by-law
Private operation public regulation of outlet
Low Impact Development (L.I.D.) Case Studies
Ownership/Operation Scenario
Public ownership operation
No maintenance required
X
X
Periodic maintenance (5-10 years)
X
X
Litter removal
X
X
Landscape maintenance
X
X
Annual inspection
X
Catchbasin clean-out
X
Winterizing
Maintenance Requirements
X
Clearing of roof drain
47
X
X
Infrequent sediment removal (10 years +)

48. Parks /
Open Space
Community
Component
storage
biofilters
L.I.D.
Sub-surface
Integration of
Integration of
canopy cover
Potential
Enhanced tree
Techniques
surface storage
to serve streets /
development areas
Infiltration galleries
2012 Green Building Festival
Public
X
X
X
X
X
Public
Private
Provision for 15% failure rate
Integration with sump pump system
Enactment of driveway by-law
Enactment of tree by-law
Private operation public regulation of outlet
X
X
X
X
X
Low Impact Development (L.I.D.) Case Studies
Ownership/Operation Scenario
X Public ownership operation
No maintenance required
Periodic maintenance (5-10 years)
Litter removal
Landscape maintenance
X
X
X
Annual inspection
Catchbasin clean-out
Winterizing
Maintenance Requirements
Clearing of roof drain
48
X
X
X
X
Infrequent sediment removal (10 years +)

49. Way
Rights of
Community
Component
bys
Enhanced
permeable
incorporate
L.I.D.
boulevards /
greenways to
Integration of
canopy cover
Potential
Enhanced tree
Techniques
retention storage
pavement into lay-
biofilters, swales or
2012 Green Building Festival
Public
X
X
X
Public
Private
Provision for 15% failure rate
Integration with sump pump system
Enactment of driveway by-law
Enactment of tree by-law
Private operation public regulation of outlet
X
X
X
Low Impact Development (L.I.D.) Case Studies
Ownership/Operation Scenario
Public ownership operation
X
No maintenance required
Periodic maintenance (5-10 years)
X
Litter removal
Landscape maintenance
X
Annual inspection
Catchbasin clean-out
Winterizing
Maintenance Requirements
Clearing of roof drain
49
Infrequent sediment removal (10 years +)

50. Low Impact Development (L.I.D.) Case Studies
SUMMARY
Key issues with implications on the
application of Green Infrastructure:
– Site conditions
– Integration with municipal standards
– Contractor education
– Maintenance and operation
– Need for monitoring
2012 Green Building Festival 50

51. Low Impact Development (L.I.D.) Case Studies
SUMMARY
Green Infrastructure Design Essentials:
– Integrated design process
– Multi-disciplinary team
– Iterative / inclusive methodology
– Creativity / innovation
– Perseverance
2012 Green Building Festival 51

52. 2012 Green Building Festival
EVERGREEN BRICK WORKS
LOW IMPACT DEVELOPMENT (L.I.D.) CASE STUDIES
OCTOBER 11, 2012
RICHMOND HILL • ONTARIO • CANADA:
Mark Schollen 30 Wertheim Court, Unit 15
Principal Richmond Hill, Ontario L4B 1B9
Tel: 289-695-0009
Schollen & Company Inc. Fax: 289-695-0010
Email: marks@schollenandcompany.com
Landscape Architecture SHANGHAI • CHINA:
Urban Design Floor 17, The Regent Asia Business Centre
Environmental Restoration No. 19 Wuning Road, Shanghai, 200042
L.I.D. Design Tel: 021-6231-0753 52