Sustainable Development in Penang

Why did MBPP approve the Tanjung Bungah development project?
Read more at https://www.malaysiakini.com/letters/399357#qbRd534yu1JfC551.99 

https://www.malaysiakini.com/letters/399357

The never ending torrential rain in Penang over the weekend was an act of God. A natural phenomenon which is a perpetual feature of our equatorial climate. Nobody would wish to have the heavens open up with such vengeance on any state.

Naturally, when the rain intensity is so great, floods will occur. We should always be vigilant during the annual monsoon season.

Flood mitigation starts from the local council and state government. Every council must take into consideration the terrain, rainfall and built up surfaces in their area. While we can always engineer ourselves out of a flood, there is always a cost versus benefit consideration. There are some low-lying areas in a flood plain that will perpetually be flooded when it rains and if we situate developments in those areas, we have to be prepared for such events.

On a small island like Penang, with its hilly terrain, engineering flood mitigation measures must be a long term and all-inclusive plan encompassing all urban growth zones. It will not be cheap, mainly due to the high land cost and the expense incurred to provide adequate storage for the surface runoff.

As the island develops, open permeable spaces will continue to diminish causing higher runoff to flow downstream into the coastal areas. Couple that with tidal phenomenon and the incoming surface runoff will easily overwhelm the drainage system causing a rise in water level.

The question we should all be asking is how do we reduce the incidence of flooding? Unfortunately, especially with our tropical climate, it is quite impossible to entirely eliminate flooding. Anybody that promises that is telling you a blatant lie.

With the right planning and engineering, we can reduce the incidence of flooding and lower the magnitude of the damage caused.

Penang’s terrain bears much similarity to Hong Kong. Being in the path of tropical storms and typhoons from the Pacific Ocean, Hong Kong bears the brunt of some of the regions worst storms. On average, six tropical cyclones slam into Hong Kong every year. While flooding still occurs in Hong Kong, they have managed to reduce the damage it causes.

There are many lessons Penang can learn from Hong Kong.

If DAP still wants to continue to develop the state in a sustainable manner, they must implement special flood mitigation requirements in addition to the ones provided by the JPS Masma manual. If the hills are being cleared, the increased runoff will tax the existing drainage system. Siltation will occur, evident from the brownish flood waters, as topsoil and sediment from the hills wash down into the coastal plain. These sediments, unless periodically maintained, will clog existing waterways, thus reducing drainage efficiency.

The ultimate problem with highly built up areas is the immense volume of runoff from storms. Sufficient storage areas in the form of retention ponds and green open areas should be provided to retard the flow of water into the rivers.

Due to its terrain and the high-density development on the island, it is expensive to provide adequate stormwater storage within a development.

Catchment areas next to hillslopes also have a large volume of runoff moving at a high velocity. The damaging effect of erosion is quite evident on many of these hill projects. Sometimes water currents are so strong, even paved roads can be ripped apart.

Some of the more innovative solutions for Hong Kong’s flooding problems like the underground stormwater storage system has worked very well over the years together with a comprehensive Drainage Master Plan.

The Drainage Services Department of the Hong Kong SAR constructed massive underground tanks to route surface runoff intercepted from uphill catchments during storms only to slowly release the stormwater into the natural waterways when the storm abates.

The Penang state government has a duty of care to the residents of Penang to ensure that disasters of such proportion should not happen.

Over the past four years, a total of 119 incidences of flooding has been recorded in Penang. Penang is an economic powerhouse and home to some of the world most high-tech electronics producers.

The state government has to provide a safe and secure environment for investor to house their production facilities and assets. Otherwise, multinationals might shun the island because of the cost of protecting and insuring their priceless assets. Productivity would be affected and the cost to remedy the damage.

We will only find out the true financial cost of this disaster over the next few weeks.

For Penang to recover from this tragedy, federal funding is required to repair all the damaged infrastructure within the state.

The very least they can do is to provide a COMPETENT flood mitigation plan for the state starting with a comprehensive Drainage Master Plan Study.

The Penang government has to be ACCOUNTABLE to the people and not private developers. If certain waterways and catchment areas have to be gazetted as permanent drainage and storage areas, then so be it.

The safety and well-being of the Rakyat has to come first. Lastly, in the interest of  TRANSPARENCY, Penang has to launch an inquiry into how the local council approved property developments on Class III slopes without adequate slope protection.

The collapse of many retaining structures and slope failures in such risky locations is cause to for concern because as of right now, any dwelling structure located downstream to those development could possibly be the scene for the next Highland Towers.

Kong Len Wei@konglen wei

Source: by Kong Len Wei, a Civil engineer  and councilor for Majlis Perbandaran Manjung and the Chairman of MCA Youth Perak Young Professional’s Bureau


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PENANG MCA has raised concerns about the safety of the residents in Tingkat Paya Terubong 4, right behind the Majestic Heights flats

Its Bukit Gelugor deputy secretary Marvyy Choong said the deforested hill behind the flats, just a stone’s throw away from Block 1, was a time bomb.

“There are 12 blocks of 23-storey flats in Majestic Heights.

“I understand that many residents have already moved out, leaving only a few more, and we’re worried for their safety.

“The surrounding hills are going bald due to ongoing earthwork and the 12 blocks may all collapse during a landslide,” he told a press conference at the flats yesterday.

He added that the hill clearing work was done by a housing project developer, which is also responsible for the paired road linking Bukit Kukus and Bukit Jambul.

Credits - Slides presented by Environmental, health and safety consultant Aziz Noor, and scientist Dr Kam Suan Pheng at the Penang Forum event on Oct 29, 2017

 

Aishah looking out her window to the hillslope which is just a stone’s throw from her unit

“We are not opposing the paired road project but we’re against high-rise projects in vulnerable areas that may endanger lives,” he said.

Choong said Jalan Paya Terubong was not safe as trees frequently fall during a downpour.

“It is also unsafe for heavy vehicles and they must be banned from using this road after the paired road is completed.”

Meanwhile, housewife Aishah Che Wan, 68, who is living at another apartment scheme near the same hill, said muddy water gushed down the hill on Saturday and Sunday.

“Some small stones damaged a few cars parked by the side of the road,” she said, adding that she now feared for the safety of her family.

“I hope that whoever is clearing the hill will take necessary safety measures to prevent any mishap,” she said. - Starmetro


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The mega floods in Penang which followed the landslide tragedy, flash floods in Kuala Lumpur and Petaling Jaya, and a shrinking water catchment area in Ulu Muda ... it’s time our leaders paid attention to the environment.

THE news has been full of the related issues of hill cutting, logging, landslides and floods. The environmental crisis is back in the public consciousness, and we should seize the moment to find solutions and act on them.

Penang has been the epicentre of this upsurge, for good reasons: the mega flash floods and landslides over the weekend and on Sept 15, and the Oct 21 hill slope collapse in Lembah Permai (Tanjung Bungah) which killed 11 employees at a construction site.

Saturday’s overwhelming floods in Penang, which paralysed the island in so many ways and affected lives, property and activities, was a megashock not only to people in the state but throughout the nation.

But it’s not just a Penang phenomenon.

On Oct 30, flash floods caused massive traffic jams in Kuala Lumpur and Petaling Jaya.

Federal Territories Minister Datuk Seri Tengku Adnan Tengku Mansor said the floods were caused not only by heavy rain but by developers of two projects that had blocked drainage.

A stop­work order will be issued if the developers do not take measures specified by City Hall.

Another threat is the logging of valuable water catchment areas.

The Ulu Muda forest in Kedah, which provides much of the water supply to Kedah, Penang and Perlis, is under such a threat as the originally designated Ulu Muda water catchment area has shrunk by 87% from 98,400ha in 1969 to 12,484ha in 2017.

The forest reserve was the most important water catchment area in the Northern Corridor Economic Region but timber production there was growing because Kedah depended on logging as a source of income, said Penang Water Supply Corporation CEO Datuk Jaseni Maidinsa ( The Star, Oct 27).

He suggested that the federal government compensate Kedah for gazetting and preserving Ulu Muda as a water catchment area, noting that the Muda Dam provided 80% of the daily raw water needs for Kedah.

Jaseni issued this stark warning: when logging affects the Muda Dam’s ability to store sufficient water, all three states would face a water crisis in the next dry season.

In Penang, the debate on the floods and the tragic landslide has continued non­stop and moved last week to the State Assembly.

The clearest explanation of the worsening flood situation that I have heard was the presentation by scientist Dr Kam Suan Pheng at the Penang Forum event on Oct 29.

A former Universiti Sains Malaysia academic who then worked in international agencies including the International Rice Research Institute, Dr Kam said there were seven main causes of floods in Penang:

• > Increasingly heavy rainfall; 
• > Expansion of impermeable surface area;
• > Eroded soil and landslides increase the sediment load in surface runoffs;
• > Debris that clogs up waterways; 
• > Accumulation of surface flow downstream;
• > Limited capacity to channel off discharge; and
• > High tides slow down discharge to the sea.

She provided historical and current data to show that flash floods are happening more frequently and with more adverse effects, even with lower rainfall levels. With higher rainfall expected in future, the situation can be expected to significantly worsen.

Dr Kam focused on expansion of impermeable surface area (caused by ill­ planned development and replacing natural ground cover such as hills, fields and trees that act as a water ­absorbing sponge) and soil erosion and landslides (caused by cutting and development in hill areas) as two factors that need special attention.

She quoted Datuk Kam U Tee, the Penang Water Authority general manager (1973­~90), as having correctly explained the Penang floods of October 2008, as follows: the floods were caused by conversion of the Paya Terubong and Bayan Baru valleys into “concrete aprons that do not retain water. The water immediately flows into streams causing flash floods even with moderate rainfall. Because of hill­cutting activities, the flowing water causes erosion of the slopes which carries mud and silt into the river beds”. ( The Star, Oct 24, 2008).

Flood mitigation and flood prevention are two types of actions to tackle the flood problem, said Dr Kam.

Mitigation measures only tackle the symptoms, are costly and need public (state and federal) funds. These include structural measures (upgrading rivers, installing pumps) and non­structural measures (drainage masterplan; flood forecasting and warning systems; public education).

Flood prevention should be the priority as that would tackle the root causes, said Dr Kam, who proposed the following actions:

• > Proper land-­use planning and development control;
• > Environmental, drainage, transportation and social impact assessments should be made   regarding development plans, beyond individual development projects;
• > Stringent protection of hill land and slopes;
• > Stringent monitoring of development projects;
• >More greening of urban spaces, including a system of parks; and 
• >Protection of riverbanks. 

To take these measures, policymakers have to deploy a wide range of policy and legal instruments, and to adopt environmentally sensitive and ecologically friendly structural and non­structural solutions, concluded Dr Kam.

Another speaker, Datuk Agatha Foo, complemented Dr Kam nicely when she elaborated on the various laws, guidelines and plans that can be used to prevent the wrong kinds of development, to control and monitor approved developments and to strictly enforce the laws.

She also spoke on the loopholes and weaknesses of the laws and how to correct them.

Events of the past few weeks alone indicate that the number of environment ­related and human-made problems are bound to increase, probably many times, unless our leaders and policymakers give higher priority to the environment and to well­ planned development. The paradigm shift should start now, as the alarm bells have already rung.


Source: The Star Malaysia director@southcentre.org Martin Khor Martin Khor is executive director of the South Centre. The views expressed here are entirely his own.


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