1. EU inspiration green infrastructures, in different scales Innovative city development within environmental boundaries
Eira Rosberg, Sustainable Development Coordinator
26 Sept 2019
Green 4 Grey seminar Brussels

2. In this presentation Continous strategic master planning process
Innovative stormwater management
Encouraging sustainable mobility

3. With a population of 120,000, Lahti is a growing, vibrant, BOLD
ENVIRONMENTAL
CITY

4. - Lahti is located near Lake Vesijärvi and smaller lakes
- Lahti is located near Lake Vesijärvi and smaller lakes. Lakes don’t flood easily nor has serious wind or wave effect
In the southern Lahti runs River Porvoonjoki and its side streams in low lands. They have risk of flooding.
Flooding maps are fully used in land-use planning and buildings are not allowed in risk zones. However, possibility of hanging ice damns exist  winter flooding could occure in non-typical sites or cause higher flooding than we’re prepared for.
- However, biggest risk of flooding in Lahti is caused by storm water in densily built and non-permeable areas.
lauantai, 5. lokakuuta 2019

5. Continous Master planning process enables different strategic focuses every 4 years. Now focus is on sustainable mobility. The target year is 2030.
lauantai, 5. lokakuuta 2019

6. The Everyday Places and Routes material was collected in spring 2018
Made with Maptionnair map query respondents places marked
Four events in shopping centers - Over 300 participants - Locations, but ideas and feedback, also as text
lauantai, 5. lokakuuta 2019

7. Example of map analysis; positive and negative places
lauantai, 5. lokakuuta 2019

8. In the master planning process:
Wide amount of side reports like the ecosystem services report, the quiet places study and the carbon sinks and storages report
Impact assessments from various topics (local economics, cultural, ecosystem services, forestry, climate change)
~50 people participating impact assessment process
Few alternative areas in the draft
The Master plan draft map received comments 90, mostly via web pages and from citizens. Most comments were about forests and parks.
 Next year to the city council for decision-making
lauantai, 5. lokakuuta 2019

9. lauantai, 5. lokakuuta 2019

10. Stormwater management innovations

11. Hennala, old military area in Lahti
Open stormwater structures
- 30 ha developing area
- Architecture competition 2016
Minimizing the leaching of nutrients and harmful substances
lauantai, 5. lokakuuta 2019

12. Planning storm water for city centre and the development area
Aims for storm water planning :
Multi-functional use of stormwaters, in middle on developing housing and service area.
Climate change adaptation
Coherent with the planning and architecture of the area
Strom waters from the area and from city centre, via existing pipelines and new pumping station, and to treat city centre overflows
Soil is clay
Especially need to treat phosphorus and heavy metals from the storm water
Bio-filtration
Testing different materials with UniHelsinki
Follow-up
lahti.fi/puhdashulevesi

13. Cost-efficient hybrid storm water solution in Lahti
Detention pool
Water exit
Bio-filtration in three sections
Stormwater to the system
Channel
Wetland
lahti.fi/puhdashulevesi

15. Citizenzs’ cap and trade co-created
Citicap aims to reduce emissions from transport, collect and make available digital data on mobility and develop new transport services for citizens.
The CitiCap project will experiment with
a personal carbon trading scheme for mobility as part of the Lahti region’s transport policy
produce a platform for mobility mass data
build a 3 km main cycle route based on smart solutions
See

16. Weekly personal cap, based on the Lahti emission target
App automaticly detects the transport you’re using
And calculates emissions
Pilot phase at the moment
Coming: more realistic emissions of your car , socially acceptable varying caps for different groups of people
If you undercut your weekly cap, you’ll gain profits like discounts and services
University studies coming

17. THANK YOU! Eira.Rosberg-Airaksinen@lahti.fi