Town & Country Planning Organization, M/o Urban Development, Govt. of India, New Delhi.
The availability and usage of different motorized modes of transport not only affect the environment but also contribute to global warming and climate change. Similarly, planning, designing and development of transport projects and construction of transport infrastructure also impact the environment and therefore environment considerations and their assessment is vital. It is well known fact that transport has significant detrimental effects on both built and natural environment along with human beings. Such effects have lifelong impacts and therefore the same may be mitigated at different stages of planning, designing, construction and operation. In this context, it is important to carry out the assessment of the consequences of programs, policies and projects related to transport on environment at micro and macro level.
2.0 Environmental Considerations in Transport
Transport is a means to carry man, materials, machines, goods, etc. from one location to another location by using various methods/modes. In fact, it involves mobility of people, carrying of goods, and delivery of services from local level to global level. In other words, such mobility needs creation of world class transport infrastructure, environmental sustainable modes of transport and good governance. On the contrarily, such transport infrastructure projects / plan implementation /policies formulation have repercussions on various environmental components such as air quality, noise pollution, carbon emission, public health, etc. Therefore, environmental considerations are important to assess in plan formulation and project implementation which is described in Table 1.
|Table 1: Environmental Considerations in Transport Plans Formulation and Projects Implementation|
|S.N.||Plans Formulation & Projects Implementation||Affected Components||Environmental Considerations|
|i.||Location of Project||Human Population including built & natural environment.||Control of soil erosion, air pollution, disposal of waste to protect human health|
|ii.||Components of plans / projects||Route alignments, corridor development, transit nodes, etc. affect urban fabric and environment.||Considerations for landuse & ecology, air/water/noise pollution, visual impacts, etc.|
|iii.||Construction of urban roads||Human habitation along the roads / expressways, etc. in terms of severance, surface vibrations, etc.||Check for dust generation, air pollution, noise pollution, etc.|
|iv.||Construction of foot over bridges (FOB), flyovers, bridges, et.||Impact on surface/ ground water hydrology, noise level, visual intrusion, etc.||Check for underground water quality, noise pollution along the transit corridors particularly in residential areas.|
|v.||Underground infrastructure such as underground stations, bus terminals, multimodal integration hub, etc.||Impact on water ecology, underground vibration, natural drainage, etc.||Protection of water qualities, water bodies, natural slopes, etc.|
|vi.||Public Transport System such as ARTS, BRTS, LRTS, MRTS, PRTS, etc.||Commuters, air quality, built environment & plantations along the transit corridors, etc.||Check for air quality, noise exposure, loss of trees, landscape change & ecological change, etc.|
|vii.||Transport infrastructure in hilly Terrains||Impact on flora & fauna, natural environment, geological conditions, etc.||Protection of natural environment|
|viii.||Provisions of Public Transport Terminals such as Bus Depots, ISBT, Railway Terminals, Multi Modal Interchange Stations, Rail-Bus Integration Nodes etc.||Impact on micro environment, air, noise, surface water, etc.||Checks for air pollution, noise pollution, oil pollution, dust generation, etc.|
|ix.||Manoeuvre & Movement||Affecting schools, hospitals, residential areas, periphery of water bodies, etc.||Provisions to avoid air /noise pollution in such areas.|
|x.||Road side Landscape||Affecting natural beauty, roadside plantation, agriculture lands, natural vegetation, etc.||Route planning and geometric design of roads to preserve natural beauty &amp; vegetation.|
Generally, major transport infrastructure projects need environmental analysis which is done under certain environmental legislations. Further, it is important to estimate and address the impacts of transport infrastructure development at both micro and meso level. Therefore, Strategic Environmental Assessment (SEA) and Environmental Impact Assessment (EIA) are used as step-by step methodology for environmental analysis.
3.0 Strategic Environmental Assessment
The Strategic Environmental Assessment (SEA) introduces environmental considerations in decision making process at early stage of policy decision and plan formulation which further allows decision makers to focus on environmental effects of tactical choices. It helps to consider wide range of alternative proposals and mitigation measures earlier than EIA at project level. According to Asian Development Bank, SEA cannot be restricted to environmental considerations only as most of the time, implementation of programs and policies also effect social and economic developments which further cause indirect environmental deprivation.
In other words, Strategic Environmental Assessment is a process:
- to evaluate environmental consequences of a proposed policy, program and plan initiative,
- to incorporate preventive and mitigated measures at appropriate levels of decision making process along with socio-economic considerations.
3.1 Strategic Environmental Assessment in Transport Policy, Program, and Plan
In India, Strategic Environmental Assessment in Transport Policy, Program, and Plan has not yet been considered by the Ministry of Environment, Forest and Climate Change, Govt. of India but its considerations at Policy, Program, and Plan formulation stage can be helpful to understand and choose various options and planning interventions at macro level. Finally, selection of such actions, interventions and activities may help to choose projects which have minimum impacts on the environment in long term even after 5 to 10 years. Table 2 describes various steps to conduct SEA in transport policy and program.
|Table 2: Steps in Strategic Environmental Assessment in Transport Program, Policy and Plan|
|i.||Screening & Scoping||It is applicable for all city level mobility plans including traffic plans.||Useful for those programs which may be associated directly and indirectly with transport infrastructure development.|
|ii.||Establishing the Baseline||Baseline refers existing conditions before any urban mobility policy / program / plan implementation against which subsequent changes may be referenced.||Useful for all urban mobility policy/program/plan which may affect environment directly or indirectly by the proposed plan and planning interventions.|
|iii.||Impact Assessment||It is to carrying out impact assessment. It may include assessment of objectives and recommendations /outputs of program /plan.||Useful in assessment of potential impacts, secondary impacts, unforeseen impacts, cumulative impacts, etc. Useful in identification and assessment of need of alternative scenarios.|
|iv.||Mitigating Impacts||It includes elude and prevent environmental impacts at planning level of the program/plan and identify alternate transport options.||Useful to minimize and control adverse environmental impacts through planning interventions such as selection of alternate sites, modified alignment, use of updated technology, etc. at implementation level.|
|v.||Monitoring and Evaluation||Formulation of Monitoring Plan and identify criteria for evaluation.||Useful at different level of plan implementation and operation stages.|
3.2 Strategic Environmental Assessment of Gujarat State Highways Program It was an initiative taken by the Govt. of Gujarat with the help of World Bank to improve the State Highways. It was aimed at widening and strengthening a set of economically feasible State Highways. The project feasibility study selected 8 18 km of roads for improvement with the available budget. The environmental team undertook the Sectoral Environmental Assessment (SEA) for the total 818 km of roads. The objectives of the SEA were:
- to perform an environmental screening of the project corridors in order to classify each road corridor as high, medium or low levels of impact.
- to provide practical plan for mitigating and monitoring the impacts which would occur as result of the road rehabilitation and construction activities as well as due to future operation of the road corridors.
- to design and implement Environmental Management Unit (EMU), intended to act as a unit implementing the Environmental Action Management Plan and Resettlement Action Plan on behalf of Gujarat Road and Building Deptt., Govt. of Gujarat.
|Table 3: Strategic Environmental Assessment of Gujarat State Highways Program|
|S.N||Highway Program Components||Details of Program||Strategic Environmental Assessment (SEA) Components||Outcomes and Learning Experience|
|i.||Road Improvement (widening/ strengthening )||818 km of State Highways were selected under this program.
Project was financed by the World Bank.
Team was constituted to undertake SEA for this program
|SEA was conducted to assess impacts of proposed program on both natural environment and social environment.
Methodology was framed to collect data on natural and social environmental features along the corridor of impacts including no. of residential /commercial units likely to be affected, adjacent land uses, loss of trees, water bodies, archaeological sites affected, etc.
Assessment was done and impacts were classified as low, medium and high level impact.
Impact assessment on both natural and social environment was done during construction and operations of the road corridors.
SEA suggested mitigated measures during early design stage such as:
-To avoid unnecessary displacement by modifying project alignment, reducing the width of the corridor or modifying design,
-To reduce the width of the right-of-way(RoW) or corridor of impact wherever possible,
-To ensure access to business and residential areas that may have been impacted by construction,
-To use the land outside the RoW controlled by Gujarat Road and Building Deptt. , but not needed after construction, to relocate people,
-To minimize the losses to users of public property, such as the tree plantations within the RoW, restricting the cleared zone to an absolute minimum width within given design and safety constraints,
-To find new plots and houses on the open market for relocating,
-To provide roadside amenities such as bus stops, lane markings for non-motorized traffic along the paved shoulder
|Based on low, medium and high level impact, the same was categorised as short term and long term impacts.
Mitigation measures were recommended during construction and operation phases.
Preventive and Mitigation actions were suggested in order to minimise impacts on air, water, noise, flora & fauna.
Environmental Management Action Plan was prepared with mitigation measures in the construction and operation phases of the project.
Resettlement Action Plan was prepared to compensate for the losses in terms of land, livelihood, structure damage, community property, other assets, etc.
Two corridors (bypasses) were identified for new construction and were classified as high impact category project.
Other parts of corridor were classified as medium and low impact category project.
Mitigation measures under EMAP were needs to be implemented.
|ii.||Periodic maintenance (asphalt overlays)|
|Source: (i). Roads & Building Deptt, Govt. of Gujarat (1998) Gujarat State Highways Project, Sectoral Environmental Assessment, E-228, Vol.-I, Final Report-2A (ii) Development of Toolkit on Environmental Analysis: SEA and EIA under SUTP (2014), MoUD.|
4.0 Environmental Impact Assessment
Environmental Impact Assessment (EIA) was developed as a tool to assess and reduce adverse impacts on the environment caused by implementation of the projects. In fact, the EIA needs a comprehensive assessment of environmental considerations and mitigation of impacts during pre-construction, construction and operation stages. Further, Environmental Management Action Plan as outcome is required to minimize the environmental impacts.
In other words, Environmental Impact Assessment is referred to Project and generally concerned with local environment. According to UNEP, the main objective of EIA is to promote environmental sound and sustainable development through identification of appropriate alternatives and mitigation measures to reduce adverse impacts on the environment caused by the projects.
4.1 Environmental Impact Assessment in Transport Project
In India, EIA study is an essential part of the “environmental clearance” process for the scheduled development projects under Environmental Protection Act 1986.Further, EIA Notification 2006 (amended in 2009 and 2011) has classified the projects under Category A and B. Category A (Central Level) projects includes expansion and modernization of existing projects requires clearance from M/0 Environment, Forest and Climate Change, Govt. of India and Category B1 requires clearance from State EIA authority constituted by the Govt. of India.
Further, as per Notification, transport infrastructure projects such as highways, airports, ports & harbours have been identified as projects requiring EIA. Recently, other urban transport infrastructure projects such as MRTS, BRTS, expressways, etc. also conduct EIA for the benefit of the city and region.
|Table 4: Environmental Impact Assessment in Transport Projects|
|S.N.||Stages of Project||Environmental Components||Remarks|
|i.||Planning and Design Stage||Natural Environment: Micro-climate, land, water, vegetation, flora & fauna, etc.
Built Environment: Buildings, structures, materials, energy conservation, aesthetics, etc.
Social Environment: socio-economic aspects, land prices, land uses pattern, loss of utilities, public health & safety, etc.
|All environmental components need to be quantified in pre-project and post-project stage to understand the consequences of the impacts.
Public hearing is an important component of the EIA process.
Provisions of EIA Notification 2006 (amended in 2009 and 2011) must be followed.
4.2 Environmental Impact Assessment of Bus Rapid Transit System Ahmedabad
EIA of Bus Rapid Transit System (BRTS) Ahmedabad is one of the examples to understand, assess and explore environmental consideration in both construction and operation phase. Table 5 describes components of EIA, outcomes and various measures required at different phases of projects.
|Table 5: Environmental Impact Assessment of BRTS Ahmedabad|
|S.N||Details of Program||Environmental Impact Assessment (EIA) Components||Outcomes and Learning Experience|
|i.||Operation of BRTS Ahmedabad started in October 2009 by Ahmedabad Janmarg Limited.
System is planned as integrated multi modal transport system of main and feeder lines to connect major origins and destinations in the city.
Project was developed on PPP model.
|EIA was conducted to address environmental issues due to Phase-I of the project.
EIA considered impacts during Planning and Design Stage, Construction Stage and Operation Stage.
EIA considered impacts on: Natural Environment, Built Environment, Social Environment and Other Specific Impacts.
Impacts were classified and compared with pre-project and post-project scenario.
Environmental Management Action Plan was prepared with mitigation measures.
Mitigation Plan of Impacts was prepared for all three phases of the project.
|Pre-Construction: Creation of Social Forestry Program through local communities in planting and maintenance of trees.
During Construction: Equalization of Soil out & fill. Avoid spillage as much as possible.
Avoid water source lost, pollution, etc. as much as possible.
Minimize Air /water / noise pollution.
Noise limits for equipment as per norms.
Cutting of trees only in unavoidable situations with compensatory afforestation, etc.
Contingency Plan for vehicular spills.
Maintain of storm water, drainage system, etc.
Road side Tree plantation. Monitoring of Noise Levels. Checking vehicular pollution.
As per EIA notification, the adopted approach is in order to a large extent and may be applicable for EIA of other urban transport infrastructure project. Further, such findings may be replicated in other cities for environmental preservation to promote sustainable development.
|Source: Development of Toolkit on Environmental Analysis: SEA and EIA under SUTP (2014).|
5.0 Environmental Considerations for Alternate Modes of Transport
5.1 Aerial Ropeways (Cable Car)
Modern transport is technology driven vehicles which carry both men and materials. The selection of technology depends on various factors such as to meet travel demand, urban fabric, density pattern, life-cycle costs, environmental impacts, etc. The conventional public transport systems such as MRTS, BRTS, LRTS, buses, etc. have their own importance to meet travel demands in respective areas. Contrarily, the same may not hold good in mountainous areas and hilly terrains due to geographical, topographical and natural constraints. In this context, several unconventional transit technologies are developed with specific purposes for specific geographical regions/areas to provide comfortable, environmental sustainable and efficient mobility. One of such technologies is aerial ropeway(cable car) which is widely used in geographical constrained areas and areas with topographical barriers. As per EIA Notification 2006 (amended in 2009 and 2011) , all Aerial Ropeway Projects falls under “Physical Infrastructure including Environmental Services” category need Environmental Clearance which details are given in Table 6.
|Table 6: Aerial Ropeways Project requiring Environmental Clearance as per EIA Notification, 2006|
|Project or Activity||Category with Threshold Limit||Condition|
|7 (g)||Aerial Ropeways||All projects located at altitude of 1000.00 mt and above.
All project located in notified ecologically sensitive areas.
|All projects except those covered in column 3||General Conditions*|
|Source: EIA Notification 2006.|
Note: * Any project or activity specified in Category 'B' will be treated as Category 'A' if located in whole or in part within 10.00 km from the boundary of (i.) Protected areas notified under the Wildlife (Protection) Act, 1972, (ii.) Critically polluted areas as identified by the Central Pollution Control Board from time to time, (iii.) Eco-sensitive areas as notified under section 3 of the Environment (Protection) Act, 1986, such as Mahabaleswar Panchangi, Matheran, Pachmarhi, Dahanu, Doon Valley and (iv.) Inter-state boundaries and international boundaries Provided that the requirement regarding distance of 10.00km of the inter-state boundaries can be reduced or completely done away with by an agreement between the respective states or UTs sharing the common boundary in the case the activity does not fall within 10.00Kms. of the areas mentioned at item (i), (ii) and (iii) above.
During 2010, then Ministry of Environment and Forest, Govt. of India decided to bring out EIA Sector Specific Manuals for 37 development projects and “EIA Guidance Manual for Aerial Ropeways” is one of them. The manual of each sector contains Model TOR of that sector, technological options, process for cleaner production, waste minimization, monitoring of environmental quality and procedure of obtaining environmental clearance under certain regulations.
Aerial ropeway (Cable Car) is known as aerial tram, sky tram, aerial tramway, etc. and also called as Udan Khatola, Gagan Khatola, etc.in India. It is considered as Environmental Sustainable Transport (EST) due to following reasons:
- Relatively low carbon foot prints.
- Electric engine /motor used at Stations which cause less pollution.
- Greenhouse gas emissions credit system just like Medellin Cable Car, Colombia.
- Cable car vehicles have no motors and therefore no noise and air pollution along the route.
- Little disturbance in micro environment during both construction and operation.
- Creation of infrastructure,
- Smart solution for smart mobility in undulating terrain
- Suitable for area based development.(Retrofitting / Redevelopment / New Development )
5.2 Tram (Light Rail Transit)
Now-a-days, varieties of transport modes are available in Indian cities. Instead of putting a new system, there is always scope to upgrade the existing system from low capacity to medium capacity with less travel time and more comfort along with modern facilities within affordable cost. In this context, revival of tram and a shift from tram to Light Rail Transit have its own potential to change the face and image of public transport in small and medium sized Indian cities.
Trams were first introduced in Delhi in 1908 but the service was stopped due to congestion in 1960s. In July 2015, the Govt. of Delhi had planned to reintroduce trams as public transport in Chandani Chowk area but the same was scrapped due to high infrastructure cost (i.e. Rs 800.00crore for 4.3 km long track) and it was decided to run e-buses in September 2015. After the interfering of the Hon’ble Delhi High Court in January 2017, Shahjahanabad Redevelopment Corporation has been assigned to prepare a comparative study of plying of trams and e-buses in the Walled City of Delhi.
However, DMRC has prepared DPR for Tramway System in Chandani Chowk Area, and environmental study was carried out for the proposed alignment in April 2015. The impacts were assessed for various phases of project cycle. The impacts were categorized as negative and positive due to
- Project Location,
- Project Design,
- Construction Phase and
- Project Operation.
|Table 7: Environmental Impacts Checklist for Tramway System in Chandani Chowk Area (DMRC 2015)|
|S.N.||Parameters||Negative Impacts||No impacts||Positive impacts|
|A.||Impacts due to Project Location|
|A1.||Displacement of People||●|
|A2.||Change of Land use and Ecology||●|
|A3.||Loss of Cultural and Religious Structures||●|
|A5.||Loss of Trees||●|
|A6.||Drainage & Utilities Problems||●|
|B.||Impact due to Project Design|
|B1.||Platforms - Inlets and Outlets||●|
|B2.||Ventilation and Lighting||●|
|B4.||Risk due to Earthquakes||●|
|C.||Impact due to Project Construction|
|C1.||Top Soil Erosion, Pollution and Health risk||●|
|C3.||Risk to Existing Buildings||●|
|C4.||Problems of Soil Disposal and Seepage Risk||●|
|C6.||Increased Water Demand||●|
|C7.||Supply of Construction Material||●|
|C8.||Construction and Demolition Waste||●|
|C9.||Batching Plant and Casting Yard||●|
|D.||Impact due to Project Operation|
|D3.||Water supply and sanitation||●|
|D8.||Enhancement of Economy||●|
|D11.||Traffic Congestion Reduction||●|
|Source: DPR for Tramway System in Chandani Chowk Areas, DMRC, April 2015.|
Further, areas of tree plantation cleared needs to be replaced according to Compensatory Afforestation Policy under the Forest Conservation Act, 1980. Trees need to be planted against every tree felled as per norms by the Forest Department, Govt. of Delhi.
6.0 Discussion and Concluding Remarks
- Due to global warming and climate change, environmental concern in transport policy and transport infrastructure project is vital. It needs integration of environmental aspects in policy, plan and program formulation and project implementation so that preventive, mitigated and preparedness provisions and strategies may be incorporated at appropriate level before final decision sand execution.
- At project level, environmental concern in pre-construction, construction and post-construction phase help to identify potential environmental implications and adopt strategies to mitigate such impacts. Environmental and sustainable development has socio-economic, cultural and public health dimensions which are assessed during conducting SEA and EIA. Therefore, selection of appropriate transport options is more appropriate and scientific.
- Public consultation is an important part of EIA process for all projects under categories “A” and “B1”. Such provisions make EIA procedure more transparent and inclusive. Environmental cost benefit analysis recommended by expert appraisal committee at screening and scoping stage, incorporates value addition in EIA study.
- However, SEA and EIA as environmental analysis tools have own significance in both plan (program) formulation and project implementation. It is important to recognize importance of SEA in Indian context and provide statutory status of the same. Further, scope of EIA may be extended to cover major and mega transport infrastructure projects apart from port & harbour, highways, aerial ropeways and airports.
- The aerial ropeways have a great impact on environmental conservation. It reduces the fleet of motorized vehicles on the road used to transport man, materials, tea-leaves from estate to factory, vegetables from production belt to consumption market, etc. particularly in hilly areas. In fact, it leads to reduced carbon generation, reduced cost of road maintenance and reduced environmental degradation caused by heavy motorized vehicles.
- Sometimes, the retrofitting and new development of the areas in hilly States may be benign with development of “area and need based mode of transport”. The planning of aerial ropeways corridor, construction of lower terminal stations, upper terminal stations, development of surrounding areas near towers, etc. may promote implementation of transit oriented development in newly developed and redeveloped areas in hilly terrains.
- Tram is a sub-category of LRT rather than distinct transport mode but it may be a good feeder mode for close transit systems such as metro, monorail, suburban rail, etc. However, operation of tram may reduce personalized vehicles in CBD areas, walled cities, historical core areas, etc. and replace minibus, auto, cycle rickshaw, etc. which may further reduce demands for parking spaces, vehicular pollution, road accidents, etc. In this context, an initiative needs to be taken to establish Tram as one of the modes of environmental sustainable transport and also recognize as alternative mode of public transport.
- Asian Development Bank (1997), Environmental Impact Assessment for Developing Countries in Asia, ADB Publication.
- Kumar, Pawan (2007), Land Development Project and EIA in Urban Development in Ta’i, Murphy, P. and Rana, P.S.(Editors-2007), Environmental Impact Assessment : An Indo-Australian, Book well Publication, New Delhi, pp 235-241.
- Kumar, Pawan (2015), Revival of LRT (Tram) in Urban Area, Case Study: Hiroshima (Japan), 8th Urban Mobility India Conference, Nov 24-27, 2015, New Delhi.
- Kumar, Pawan (2016a), Cable Car (Ropeway): An Alternate Mode of Transport, Indian Journal for Transport Management, July –September 2016, pp 136-144.
- Kumar, Pawan (2016b), Light Rail Transit in Urban India: Scopes and Opportunities, 4th Annual South Asia Transport Infrastructure Conference 2016, Sept 19-20, 2016 at New Delhi.
- Kumar, Pawan (2017), Tram to Light Rail Transit for Smart Mobility, Architecture- Time, Space & People (Journal of Council of Architecture), February 2017, Vol 17, Issue 2,pp 36-44.
- Ministry of Urban Development (2014), Development of Toolkit on Environmental Analysis: SEA and EIA under SUTP Program, MoUD, New Delhi.
- MoEF (2006), EIA Notification, Gazette Notification. (Published in the Gazette of India, Extraordinary, Part-II, and Section 3, Sub-section, dated 14th September, 2006)
- Roads & Building Deptt (1998) Gujarat State Highways Project, Sectoral Environmental Assessment, E-228, Vol.-I, Final Report-2A, Govt. of Gujarat.
- UNEP (2002) EIA Training Resource Manual Division of Technology, Industry and Economics and Trade Branch, Geneva.