INTERREG III B CADSES RAINDROP Project partner No 4: Municipality of Acharnai Scientific support: ...

INTERREG III B CADSESRAINDROP

Project partner No 4:

Municipality of Acharnai

Scientific support:

YDRONOMI Consulting Engineers

INTERREG III B CADSESRAINDROP

Project partner No 4:

Municipality of Acharnai

Scientific support:

YDRONOMI Consulting Engineers

Municipaliy of Acharnai YDRONOMI Consulting EngineersMunicipaliy of Acharnai YDRONOMI Consulting Engineers

PP4 - Acharnai: The RainDrop experience

PP4 - Acharnai: The RainDrop experience

•Evolution of Acharnai and its drainage problems (sins of the past torturing the future generations)

•Designing for Raindrop (which problem to do we solve first?)

•Administration for Raindrop (or democracy in modern Greece)

•Works’ progress (in the land of our ancestors)

•The future (Rain Drop: much more than just a drop!)

•The Raindrop experience (lessons and the final outcome)

The hydrographic network – Before…The hydrographic network – Before…


The hydrographic network – Before …The hydrographic network – Before …

www.ydronomi.com


X X XX

X

and … nowdays: the “man-made hydrographic network

To get an idea of the magnitude of the problem: The event of May 24th 2007To get an idea of the magnitude of the problem: The event of May 24th 2007


To get an idea of the magnitude of the problem: The event of May 24th 2007To get an idea of the magnitude of the problem: The event of May 24th 2007


•Damage claimed after that flood : 6 million Euros!

•If we could cut the runoff by 50% literally no damage at all

Designing for Raindrop (which problem to do we solve first?)Designing for Raindrop (which problem to do we solve first?)


Goals:

• local pilot intervention in one of the problematic areas

• Visible result

• Pilot application that will show the way for more similar projects


The design:

Retention Tank 1500m3

Porous Pavment 250m3

Trough trench 300m3


Step 1

Step 2Step 3

Technical data:

Catchment area: 315.000m2

Max runoff entering into the tank: 1m3/secMax discharge from the tank to the trough trench through pumps: 0.25 or 0.5m3/sec

Technical data:

Catchment area: 315.000m2

Max runoff entering into the tank: 1m3/secMax discharge from the tank to the trough trench through pumps: 0.25 or 0.5m3/sec


Ecomonic data:

Tank: 380.000€Trough trench: 30.000€Porous pavement: 40.000€Total: 450.000€

Ecomonic data:

Tank: 380.000€Trough trench: 30.000€Porous pavement: 40.000€Total: 450.000€


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0 10 20 30 40 50 60 70 80 90 100

t (min)

Q,I (m3/sec)

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Administration for Raindrop (or democracy in modern Greece)Administration for Raindrop (or democracy in modern Greece)

Delays:A city in financial difficulties

Payment reimbursement delays from EU (still waiting)The city is not very wealthy

Elections on Oct 2006 - but new Mayor appointed in FebruaryVery close result (0.17%) with final decision in court… 4 months of administrative halt

Actions for solving the problem:Mobilization - The new Mayor took it personally

Meeting in Prague with project partnersMeeting in Rome with the Managing Authority

Results:No funds lostTransfer of funds from 2006 to 2007 (exceptionally)No total delayNo risk for the other project partners and their payments


Works’ progress (in the land of our ancestors)Works’ progress (in the land of our ancestors)

Porous pavement: completed on May 20th

Works started on March 26th and by now:


Works’ progress (in the land of our ancestors) Works’ progress (in the land of our ancestors)

Retention tank and trough trench:•Discovery of archaeological findings in <2m of depth•Manual work…from the National Archaeological Service•Findings (pottery, skeletons, a well, food storage facilities) were only 2000 years old…and belonged to poor people (no gold!) ==> The site was released after 15 days


Works’ progress (in the land of our ancestors)Works’ progress (in the land of our ancestors)

Retention tank:•Concreting completed. •Connection with the porous pavement completed•Connection of the flushing system to the sewer completed

•Estimated completion: June 30th


The future (Rain Drop: much more than just a drop!) The future (Rain Drop: much more than just a drop!) Big retention schemes are designed in combination with stormwater network:•Reducing runoff discharge compared to “classic network only” from 24-->6m3/s •Diversion of supercritical flow >14m3/s with lateral weir schemes•Tanks ~12m deep with parking above them

Σ2:

T=10

Q=10.00m3/s

tc=0.27h

Σ1:

T=10

Q=14.0m3/s

tc=0.34h

2500m2

5.000m2

Σ2:

Vανάσχεσης=10.000m3

Q=3.5m3/s

Σ1:

Vανάσχεσης=20.000m3

Q=2.5m3/s


The future (Rain Drop: much more than just a drop!) The future (Rain Drop: much more than just a drop!) Authorities are embracing BMPs: Construction of networks will be approved on one condition: Retention to the existing runoff discharge to the rivers (assuming no network at all)

BMPs are emerging: •Acharnai - Agia Anna district, 0.7km2

•Municipality of Ano Liossia, 8km2 of urban space with 30,000 inhabitants•Athens Military hospital extension, 0.1km2

BMPs in the regulatory framework:The Ministry of Environment Planning and Public Works & National Technical University are working on the:

•Overview of the legal framework in the developed countries•A Law Proposal/Draft to include BMPs in SW design and planning nationwide

The future of RainDrop in the context of the new INTERREG:•Experienced, coherent, and successful team•BMPs with a more holistic approach - Include the upstream parts in the design•Climate change…


The Raindrop experience (lessons and the final outcome)The Raindrop experience (lessons and the final outcome)

Experience (or lesson!) No1: Driving in the bumpy road of project implementation…•Delays can happen (we are not UFOs, we are operating in the political and administrative reality)

•Funding reimbursement delays•Delays in works’progress•Political fist fighting

•Delays are not the end of the world (do not panic!)•No need to point fingers among partners•Opportunism (another bad –ism) is not the right way of thinking

Experience (or lesson!) No2: Dealing with the Bosses…Success (or failure) is for everybody …•EU Commission and MA and the JTS are not ruthless queens (on the contrary…)

•We can always talk to them•They are there to listen•They want to help, not to punish!

•Project Partners, Lead Partner, JTS, MA, and the EU Commission are all partners after all•Talking regularly has been a very good medicine to all problems• Communication and transversal information is always welcome MA<->LP <->PP

Experience (or lesson!) No3: EU projects are a great thing!•Multidisciplinary, multinational, multicultural endeavours (Its all about Europe after all) •They are projects providing impetus for change

•Promotion of new ideas and technologies•Promotion of environmentally friendly and technically sound solutions •Shaping the future in our profession


The Raindrop experience (lessons and the final outcome)The Raindrop experience (lessons and the final outcome)

The final outcomes from Raindrop project

•Methodology for Storm Water Management Master Planning•Step by step approach•Based on the principles:

• Maintain as undisturbed as possible the hydrological cycle after the urbanization. •Peak flows and flow volumes will not exceed those before urbanization.

•Fundamentally ecological approach of SWM.

•Guidelines for the selection of BMPs •Advantages / Disadvantages•Relative costs•A straightforward tool without getting into complicated science

ΣΑΣ ΕΥΧΑΡΙΣΤΟΥΜΕ!

Thank you!

ΣΑΣ ΕΥΧΑΡΙΣΤΟΥΜΕ!

Thank you!

Municipality of Acharnai YDRONOMI Consulting EngineersMunicipality of Acharnai YDRONOMI Consulting Engineers

It has been a wonderful experience

To be continued!

INTERREG III B CADSES RAINDROP Project partner No 4: Municipality of Acharnai Scientific support: ...

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