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The central catchment area is home to many species of animals and plants that are endemic to SIngapore or close to extinction. Building of CRL around the nature reserve will avoid this problem.

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We value the nature over the additional cost of building. Nature is priceless so 2 billion dollars will never replace the damage done to the nature reserve

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-Increased construction cost
-Travelling time will be slightly increased.
-Additional acquisition of homes and engineering challenges

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-Minimal environmental impact on the nature reserve
-Good for the economy as GDP and government reserves from land sales increase
-Improves resilience of rail network for the convenience of commuters

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-Construction costs are lower
-Shorter Travelling Time
-Can be completed by 2030

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Is going around the nature reserve really better? What are the setbacks?

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Is going around the nature reserve really better? What are the setbacks?

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Is there another way to build the CRL other than underneath or around it ?

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Is there another way to build the CRL other than underneath or around it ?

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Should the Cross Island MRT line go under or around the nature reserve?

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SINGAPORE - The Land Transport Authority will soon release findings of an environmental impact study done to assess if the Cross Island MRT line should be built under the Central Catchment Nature Reserve. Read more at straitstimes.com.

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From The Straits Times Archives: All you need to know about the Cross Island Line

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From The Straits Times Archives: All you need to know about the Cross Island Line

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SINGAPORE - The proposed alignment of the new Cross Island Line, which could run through the Central Catchment Nature Reserve, has sparked heated debate.

The 50km MRT line, which will link Changi and Jurong when it is completed by 2030, was first announced in early 2013.

Here's a look at what the controversy is about.

1. When was the plan announced?
Cross Island Line is most ambitious yet
Singapore is embarking on its most ambitious MRT project yet: the 50km Cross Island Line (CRL), expected to be ready by 2030.

While it is not the longest line here - that is the 57km East-West Line - it could be the first in Singapore to have trains with more than six carriages.

The Land Transport Authority (LTA) would not confirm this, merely saying that the CRL will be "a heavy-load system".

The CRL will also pass through densely built up areas such as Sin Ming, Ang Mo Kio, Hougang and Clementi.
READ MORE HERE
2. Why are the nature groups worried?
Studies for Cross Island Line to start
While the Cross Island Line is expected to be ready only in 2030, studies will start at the end of this year to plan for Singapore's most ambitious MRT project yet.

The 50km line runs from Tampines to Jurong, passing through densely built-up areas such as Sin Ming, Hougang, Clementi, and beneath the Bukit Timah Nature Reserve and Central Catchment Area.

The LTA is planning well ahead of time because contractors will need to dig deeper underground in land-scarce Singapore for new rail projects.
READ MORE HERE Nature Society suggests different route for Cross Island Line
Running the planned Cross Island MRT Line along Lornie Road instead of through Singapore's largest nature reserve would add just 2km and four minutes to travel time.

That would help reduce the damage to the reserve's ecosystem, the Nature Society (Singapore) suggested in a 40-page paper giving its take on the new line.

The position paper, released yesterday, also described the environmental damage that may be caused by the soil investigations and tunnelling needed for the 50km MRT project, which is expected to be ready in 2030.
READ MORE HERE
3. What did the LTA do to address these concerns?
Cross Island Line: Impact on nature to be studied
A study to investigate the environmental impact of the Cross Island Line (CRL) on Singapore's largest nature reserve will begin next year.

The Land Transport Authority (LTA) yesterday said it will call a tender in the first quarter of next year for the assessment, which will help it decide if this MRT line should pass through the Central Catchment Nature Reserve or skirt around it.

Apart from investigating the impact of possible alignments, the consultant will also have to suggest how to reduce any possible negative impact and come up with guidelines on suitable ways to carry out works such as soil investigation in the reserve.
READ MORE HERE Study begins on green impact of Cross Island Line
A global environmental consultancy has clinched a $2 million job to find out the impact that a future MRT line might have on the Central Catchment Nature Reserve.

Environmental Resources Management (ERM), which has offices in 40 countries, will start immediately on an environmental impact assessment of the Cross Island Line, slated to serve several areas including Bukit Timah and Ang Mo Kio.

Going by the proposed alignment, the 50km line that stretches from Changi to Jurong will cut through a southern tip of the nature reserve.
READ MORE HERE
4. What is the outcome of the study?
Cross Island Line: Site tests will be green
Tests to see how a train tunnel through Singapore's largest and most important nature reserve can be built have been slated for the third quarter.

The impact on the animals and plants around the test sites can be kept to "moderate" levels, said the Land Transport Authority (LTA) yesterday without going into detail, citing the findings of an independent environmental study.

The study suggested several strategies to mitigate the impact to flora and fauna, including the use of enclosures to reduce engine noise, and tanks to collect discharge.
READ MORE HERE
5. Where can I find the full report of the study?
LTA's environment report for Cross Island Line now online after complaints that it was difficult to access
The report was open to the public, but to get information on a new environment impact assessment (EIA) for an upcoming MRT line, people had to make their way to the Land Transport Authority's Hampshire Road premises to read the 1,000-page hard copy, with no photography allowed.

Yesterday, after complaints that it was too difficult to access the study, which looked at the potential impact of soil works for the Cross Island Line if it cut through the Central Catchment Nature Reserve, the Land Transport Authority (LTA) put it online.

"In response to feedback, LTA has made the EIA report available online for interested parties who are unable to come to LTA to view the documents," the authority said in a Facebook post yesterday.
READ MORE HERE
6. Are the nature groups happy with the findings?
Call for 'zero impact' for Cross Island MRT Line under MacRitchie nature reserve
Renewing calls for the Government to rethink possible plans to build an MRT tunnel under Singapore's largest nature reserve, several green groups are banding together to ensure their message gets across loud and clear.

Next month, the Love Our MacRitchie Forest volunteer group and the Herpetological Society of Singapore are among those hoping to raise awareness about the issue through a "March for MacRitchie" campaign.

The moves come even as engineers say that contractors have the tools to moderate harmful impacts on the environment.
READ MORE HERE
7. How do the residents in the area feel?
Cross Island Line sparks residents' fears
Even as green groups lobby for the Cross Island Line (CRL) to be built around Singapore's largest nature reserve instead of cutting through it, residents are worried about the impact this will have on their homes and lives.

The proposed 9km option, which skirts the Central Catchment Nature Reserve, will run beneath a swathe of private homes near Upper Thomson Road, such as Windsor Park and Yew Lian Park. It then turns west under Lornie Road before heading northwards, parallel to the Pan-Island Expressway.

The Land Transport Authority (LTA) has said that it is studying both alignments for the CRL, a 50km line connecting Changi to Jurong and expected to open in 2030.
READ MORE HERE
8. What are some other views on this issue?
ST Senior Transport Correspondent Christopher Tan: Cross Island Line debate misses elephant in room
The proposed alignment of the new Cross Island Line, which could run through the Central Catchment Nature Reserve, has sparked heated debate.

While we must do what we can to preserve our natural heritage, we should not shy away from taking hard decisions, if necessary. That has been the pragmatism Singapore prides itself on.

But is building an MRT line under Singapore's largest nature reserve necessary?
READ MORE HERE ST's Audrey Tan: Cross Island Line: Why Singapore forests are worth safeguarding
How much do we value our forests, and are they worth protecting?

"Not really, there is nothing to see in our forests... so I would say, build away," a banker friend told me. Another added that to get his nature fix, there are far better alternatives overseas.

These are typical answers I get when I ask laymen about the possibility of the Cross Island Line tunnelling under Singapore's largest nature reserve.
READ MORE HERE
9. What's LTA's response to these views?
$2b extra cost if Cross Island Line skirts Central Catchment Nature Reserve
The alternative alignment that routes the Cross Island Line (CRL) around the Central Catchment Nature Reserve (CCNR) could add about $2 billion to the rail project, the Land Transport Authority (LTA) has revealed.

This 9km-long "skirting alignment" will require longer tunnels and extra ventilation facilities, it said, compared with the 4km direct route, of which 2km will cut through Singapore's largest nature reserve.

"Besides land and home acquisitions that could affect families, the extra works could incur $2 billion more in expenditure," said LTA chief executive Chew Men Leong.
READ MORE HERE Both possible alignments for Cross Island Line will be studied
We thank all writers who have shared their views on the two possible alignments of the Cross Island MRT Line (CRL).

The Government is studying both underground alignments, and no decision has been taken yet.

For the 4km direct alignment, 2km of the tunnel will be below the Central Catchment Nature Reserve (CCNR), while the other 2km is located outside it.
READ MORE HERE

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From The Straits Times Archives: All you need to know about the Cross Island Line

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SINGAPORE - The proposed alignment of the new Cross Island Line, which could run through the Central Catchment Nature Reserve, has sparked heated debate. The 50km MRT line, which will link Changi and Jurong when it is completed by 2030, was first announced in early 2013.

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Studies for cross island line to start article

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Studies for cross island line to start article

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While the Cross Island Line is expected to be ready only in 2030, studies will start at the end of this year to plan for Singapore's most ambitious MRT project yet.

The 50km line runs from Tampines to Jurong, passing through densely built-up areas such as Sin Ming, Hougang, Clementi, and beneath the Bukit Timah Nature Reserve and Central Catchment Area.

The LTA is planning well ahead of time because contractors will need to dig deeper underground in land-scarce Singapore for new rail projects.

The pace of construction will also depend on the ground's soil profile, which experts say changes every 2 to 3 metres.

This makes excavation works all the more challenging as the tunnel-boring machines move through different types of rock and soil, said Ms Choo Chai Foong, LTA's deputy director for design development (rail).

Ms Choo, who has been with the LTA for 16 years, said: "As stations get deeper, we must be more careful as there will be more risks and engineering methods need to be adjusted."

The LTA will not want a repeat of the tragedy in April 2004, when a deep excavation at a Circle Line worksite collapsed, killing four workers and causing a section of Nicoll Highway to cave in.

That delayed the progress of the Circle Line by around two years and consequently, the rollout of lines that were to come after it.

But Singapore is not the only city to experience delays in rail projects.

Paris' plan to double its network by building some 200km of new lines took years to be finalised and approved.

New York City's Second Avenue Subway project had been planned since 1929, but only got under way in 2007.

jermync@sph.com,sg

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While the Cross Island Line is expected to be ready only in 2030, studies will start at the end of this year to plan for Singapore's most ambitious MRT project yet. The 50km line runs from Tampines to Jurong, passing through densely built-up areas such as Sin Ming, Hougang, Clementi, and beneath the Bukit Timah Nature Reserve and Central Catchment Area.

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Moderate impact to Singapore's largest patch of forest, home to many species

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Moderate impact to Singapore's largest patch of forest, home to many species

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Animals & plants might get stressed with the presence of something foreign.

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Animals & plants might get stressed with the presence of something foreign.

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They might to take advantage of the proximity of the MRT stations to build houses and facilities

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To relieve stress on the East-West on North-East Line

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To relieve stress on the East-West on North-East Line

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More households to have a MRT station within 10 mins of walking

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More households to have a MRT station within 10 mins of walking

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Increase total rail network to 360 km by 2030

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Increase total rail network to 360 km by 2030

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What is the evidence cited to support their point of view

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What is the evidence cited to support their point of view