The document presents a comprehensive environmental impact and risk assessment for a proposed barrage across the Narmada River near Bhadbhut, Gujarat, aimed at improving water quality, flood protection, and irrigation. It outlines the project's objectives, anticipated environmental impacts, mitigation measures, and benefits, including improved infrastructure and increased water availability for various uses. The assessment includes environmental monitoring plans and opportunities for public consultation as part of the project's development process.

1. Presentation on
Environmental Impact and Risk Assessment for the Proposed
Barrage Across River Narmada near Bhadbhut, Dist. Bharuch
Presented by
Vikas B. Rahangdale
DEPARTMENT OF CIVIL ENGINEERING
COLLEGE OF ENGINEERING PUNE 1

2. CONTENTS
1. Introduction
2. Project Description
3. Description of the Environment
4. Anticipated Environmental Impacts & Mitigation Measures
5. Analysis of the Alternatives
6. Environmental Monitoring Plan
7. Additional Studies
8. Project Benefits
9. Environmental Management Plan
10. Conclusions
2

3. Chap 1- INTRODUCTION
• The Kalpasar Department, Government of Gujarat has construction of a barrage across
Narmada river near Bhadbhut village.
• The barrage will be constructed at 5.15 km downstream of village Bhadbhut.
• The 25 km upstream of river mouth to segregate Narmada river fresh water from tidal water of
estuary.
Objective:-
 Protection of water quality of Narmada river from salinity due to tidal influence.
 Storage of the regulated release of water from SSP and runoff from free catchment for
irrigation, domestic and industrial water supply.
 Flood protection of about 400 sq km low lying area covering 17 villages on the left bank of
river Narmada.
 Road connectivity between left and right banks, shortening route from Surat/Hajira to Dahej
region.
3

4. The salient features of the barrage are as follows:
Barrage
River gorge width at Bhadbhut barrage location: 1600 m
Bed material property : Silty sand
Type of barrage : Barrage on permeable foundation
Design flood : 1,05,000 cumecs
Discharge through barrage : 77505 cumecs
Total Length of barrage : 1663 m
Crest level of barrage bays : (-) 2.0 m
FRL of the storage : (+) 7.50 m
Clear span between piers : 15.50 m
Nos. of gates : 90
Top road bridge width : 33 m
Road bridge top level : (+) 12.85 m
Size of gates : 15.5 m x 9.5 m
4

5. Fig. 1 : Narmada River Basin
5

6. Chap 2- PROJECT DESCRIPTION
The proposed project is essentially a Water Resource Development Project and has been conceived to
meet the following.
major objectives:
(a) Protection of water quality of Narmada river from salinity ingress due to influx of tidal
water and prevention of deterioration of quality of surface and ground water in the upper
reaches of Narmada river.
(b) Storage of regulated release of water from SSP for irrigation, domestic and industrial water
supply.
(c) Flood protection of low lying area on left bank of river Narmada.
(d) Alternative shorter route from Surat / Hajira to Dahej region.
(e) Revival of defunct irrigation schemes and additional irrigation.
6

7. Geology and Geo-Physical details of the Project Area
 The project area comes under Zone III of Seismic Zones as per Indian Seismic Vulnerability
Zoning map.
 The major earthquake that occurred in vicinity of the area in recent past is Bharuch
Earthquake of1970.
 The magnitude of the earthquake was 5.2 on Richter scale.
Hydrology of the basin
 The total catchment area of the Narmada is 98796 sq km of which 85858 sq km lie in
Madhya Pradesh, 1658 in Maharashtra and 9894 in Gujarat.
 The normal annual rainfall for the basin is 1178 mm, 90% of which is received in the five
monsoon months of June to October.
 The water availability for the Bhadbhut project has been worked out by Central Designs
Organization (CDO) with different dependability.
 From the storage at barrage, about 60 MCM water for domestic use, 200 MCM for
industrial use and about 10 MCM for irrigation purpose is estimated.
7

8. Chap 3- DESCRIPTION OF THE ENVIRONMENT
 For any developmental project, its impacts on the project site as well as the surrounding area
during various phases viz. preconstruction, construction and operation phases need to be
evaluated.
 The respective to various components of the environment viz air, noise,water (surface ground,
marine and estuarine), land, biological and socio-economic.
 The nature and magnitude of impacts on different components of the environment depend
on the type of project activities and geographical conditions of the study area.
 The results of the EIA studies form the basis for preparing a viable Environmental
Management Plan (EMP) for mitigating the potential adverse impacts.
 Accordingly primary data on various environment components was collected through
monitoring during the three seasons of 2010-11.
 An area covering 10 km radial distance with Bhadbhut (project site) as centre was identified as
the study area (impact zone). 8

9. Chap 4 - ANTICIPATED ENVIRONMENTAL IMPACTS & MITIGATION MEASURES
1. Impact during Pre-construction Phase
• the impact is limited to the acquisition of land for the purpose of approach road and flood
protective embankment.
• land requirement of about 200 ha which does not include any habitational area.
• no additional area is to be submerged.
2. Impact during Construction Phase
I. Air Environment
II. Micrometeorology
III. Post Construction Impact
1) Air Pollution Impacts due to Vehicular Movement
a) Vehicular Emissions
b) Air Quality Modeling and Predictions
IV. Noise Environment
a) Noise Due to Transportation
b) Impact of Noise on Occupational Health
c) Impact on Community
9

10. V. Water Environment
VI. Land Environment
(i) Impact on Geological Environment and Land use/land Cover.
(ii) Improvement in land ecology due to amelioration of ground water quality.
(iii)Availability of fresh river water to the urban and the rural population in the
neighboring areas.
(iv)Flood protection of low lying area on left bank of river Narmada.
(v) Improvement of Connectivity between Surat and Dahej region.
(vi)Impact due to construction material.
(vii) Impact of Seismicity due to Reservoir Loading.
(viii) Impact of irrigation in the command area.
(ix) Crop- Water Requirement.
VII. Biological Environment
10

11. VIII. Socio-economic Environment
Positive Impacts
• The project has favorable ranking by majority of the local people and is looked upon as a step for
further development of the resettlement area or nearby project area.
• The irrigation facilities will be improved to a great extent which would facilitate development of
agricultural.
• The project is expected to contribute to improvement in the quality of life in the region.
• Construction of barrage would positively help in control of floods.
• Increase in the employment opportunities, especially during construction phase of the project.
Negative impacts
• During the construction period there will be short-term socioeconomic impact in the study area viz.
increase in floating.
• population (contract labourer) which may marginally cause strain on the civic amenities like
drinking water, sanitation, road transport and other facilities.
• The project activities may increase pollution level in the area during the construction period.
11

12. Chap 5- ANALYSIS OF ALTRNATIVES
Accordingly, M/s SECON Pvt. Ltd. Considered three alternative alignments as follows:
Alignment-1 -2 KM
Alignment-2 -3.5 KM
Alignment-3 -5.15 KM d/s of the village Bhadbhut respectively.
The alignment select based on following various parameters
 river width available to accommodate barrage length,
 afflux on water levels resulting from the barrage construction,
 land to be acquired for approach embankments,
 Excavation for approach and tail channel,
 siltation problem,
 storage capacity,
 Total cost of the project,
 vicinity of gas pipelines/gas stations,
 villages and valuable properties,
 villages benefitted by availability of fresh water and land area reclaimed.
12

13. All the three alignments were analysed for selecting the best alternative and finally,
Alignment No 3. at 5.15 km d/s of village Bhadbhut was recommended.
13

14. Chap 6- ENVIRONMENTAL MONITORING PROGRAMME
• Monitoring is essential to ensure that the mitigating measures planned for environmental
protection function during the project operation period.
• A comprehensive environmental monitoring programme for minimizing negative impacts and
maximizing beneficial impacts from the Bhadbhut barrage project.
14

15. Environmental Monitoring Programme for Bhadbhut Barrage Project
Sr.
No
.
Environmental
Issue
Action to be taken Agency
Responsible
for Action
Remark
1. Noise & Air
Quality
Monitoring
1. Monitoring parameters : SPM, NOx, SO2
2. Monitoring frequency : 2 times a year (winter & summer)
3. Monitoring Points : Locations as identified for baseline
quality
4. Monitoring technical Criteria :GPCB/CPCB Standards
GoG or
Designated
Agency
Provision is to
be made in the
project budget
2. Water Quality
Monitoring
1. Monitoring parameters : pH, Turbidity, conductivity, DO,SS,
Phosphates , nitrates, bacteriological and biological(flora &
fauna)
2. Monitoring frequency : Once in a month
3. Monitoring points : Upstream of barrage
GoG or
Designated
Agency
Provision is to
be made in the
project budget
3. River Flow and
Silt Monitoring
• Identify locations in consultation with CWC and WRI
• Monitoring river flow u/s and d/s of barrage at appropriate
locations
• Assess the silt concentration at reservoir and downstream
of barrage.
GoG or
Designated
Agency
Provision is to
be made in
project budget
15

16. 4 Erosion/
Siltation
Monitoring soil erosion and slope stability of embankments of
barrage and river banks, efficacy of soil conservation measures
once in a year
…….do…… …….do……
5 Change in
Landuse
Pattern
Assessment of the landuse pattern of the project area, borrow pits,
temporary campsites, landfill sites, waste dump sites etc.for post-
construction activities once in a year
…….do…… …….do……
6 Ecology Ecological study on the status of afforestation programme (over
the forest land diverted) changes in species composition of the
terrestrial fauna and flora species with a frequency of 2 years
…….do…… …….do……
7 Fisheries Fisheries assessment survey (species, population size) in reservoir
once in a year
Fisheries
Department,
GoG
…….do……
8 Post
environmen
tal
monitoring
Conduct by an independent third party post-environmental
monitoring during construction and operation phases of the
project to assess the implementation of various components of
EMP
As suggested
by
Regulatory
Monitoring
Agency
…….do……
9 Implementa
tion
of
Mitigation
Plan
Create a regional agency with representatives from the State
Forest, Irrigation and Public Health, Highway,Traffic, Public Works,
Fisheries, Revenue Departments,GPCB,Electricity Board and the
Project proponent to monitor and oversee the compliance of
mitigation measures
Designated
Agency
To be decided
at
State Govt.
level
16

17. Chap 7- ADDITIONAL STUDIES
In addition to main EIA study, following additional specific studies have been carried out by
Kalpasar Department and NEERI.
The details are presented in the following Sections.
1. Public Consultation
As per the new EIA notification, public consultation is mandatory for seeking the opinion
of the people and other stakeholder in the project area regarding their views/perception about
the proposed project through a public hearing organized by State Pollution Central Board.
2. Risk Assessment and Disaster Management Plan
• identifying the likely effects on life and property.
• Vulnerability analysis and hazard area mapping to identify the most common area prone to
such disaster.
• The entire area prone to flood-risk.
• Location of important structures/places, etc.
• Details of structures and embankments.
17

18. Essential Requirements for Disaster Management
1. Emergency Response Organization
2. Chief Emergency Coordinator (CEC)
3. Emergency Action Group (EAG)
4. Emergency Response System
(i) Emergency Control Centre (ECC)
(ii) Communication System
(iii) Emergency Alert System
(iv) Emergency Warning and Control System
(v) Emergency Communication System
(vi) Health and Medical Response System
Social Impact Assessment and R&R Action Plan
No R&R issue is applicable to the project as no acquisition of land is envisaged from the
inhabitants since the project site is located within the river valley portion only.
18

19. Chap 8- PROJECT BENEFITS
Improvement in Physical Infrastructure
• Storage of 500 MCM Water in upstream of barrage in 85 km Stretch of river upto Tilakwada village.
• Road connectivity between Hansotand Dahej area through construction of a bridge over barrage
will be available which will reduce the travel distance by about 50-60km.
• Surat -Hajira-Ankleshwar-Bharuch-Dahej traffic will use the new coastal route of Surat (Hajira) -
Oldpad- Hansot-Barrage-Dahej which would saving travel distance by about 18 km.
• New jetty proposed in downstream of barrage will be used by fishermen of the region.
• Hatcheries proposed in upstream of barrage will be used by fishermen of the project region.
19

20. Improvement in Social Infrastructure
• The improvement in ground water quality will also lead to soil improvement in soil quality and
thereby increase the productivity of agriculture products This will boost up the financial and
social strength of people living in the area.
• Fresh river water availability for domestic- 60 MCM, irrigation-10 MCM for revival of defunct lift
irrigation schemes of the area having a command area of 1136 ha ) and industrial purposes- 200
MCM will facilitate speedier infrastructure development of the region.
• New road connectivity would facilitate more businesses activities.
20

21. Chap 9- ENVIRONMENTAL MANAGEMENT PLAN
Environmental management plan has been outlined in relation to physical environment,
biotic life and overall socio- economic aspects as applicable during preconstruction phase,
construction phase and post construction phase.
A. Pre-Construction Phase
Sr.
No
.
Environment
al Issue
Action to be taken Agency
responsible for
Action
Remark
1 Public
Acceptance
Create public awareness in the public through
effective communication, education and
information dissemination about the project and
EIA report.
Public Relation
Department,GoG
Provision to be made in
project budget.
2 Land
Acquisition
Forest land falling in the project area be
acquired in accordance with prevailing rules &
regulations.
Kalpasar Dept
3 Monitoring of
River
Narmada
Monitoring (u/s and d/s of barrage) of river to
determine baseline status.
Kalpasar Dept or
Designated
Agency
This will be a continuous
exercise during post
project phase also and
therefore provision for
necessary funds be made.21

22. 4 Soil erosion/Siltati
on /Sediment
transport/Water
quality
Provide cut off drains and holding tanks Treatment of
borrow pits &,quarries; runoff and erosion control
through proper drainage channels and structures.
Kalpasar Dept or
Designated
Agency
5 Road Construction/
Disruption of
Services
Minimize disruption to utility services through proper
planning and scheduling of activities and
interdepartmental coordination.
….do….
6 Dust/Air pollution Dust control through sprinkling of water on
construction site and access roads particularly in
places near villages
Stock piles and storage areas shall be covered or
watered to prevent dust pollution
Trucks to transport construction materials shall be
covered to minimize spills/accidents
….do….
….do….
….do….
Periodical and preventive maintenance of construction
equipment and vehicles to meet emission standards
….do….
B. Construction Phase
22

23. 7 Noise Pollution Check the measures taken by the manufacturers to
minimize noise while procuring machinery equipment
Manufactures of
Equipment/
Contract Agency Under
supervision of GoG
Provide ear muff/plugs/ personnel protection
equipment
to workers working near machines, boring sites and
crushers operation
Contract agencies under
supervision of GoG
Ensure proper maintenance of machines and trucks to
keep them with low noise
Contract agency under
supervision of GoG
Sound barriers shall be installed and trees shall be
planted places during the construction phase
Kalpasar Dept or
Designated Agency
8 Construction
Camps
Provide chlorinated drinking water to the camps and
which shall meet national potable water standards
Government of
Gujarat
/Designated
Agency
Ensure adequate public health facilities to workers Government of
Gujarat Health
Department
23

24. Adequate measures, such as provision of septic
tanks/sanitary pit latrines shall be taken at the
construction camp sites for sanitary disposal of
excreta
Government of
Gujarat
Constructing
Agencies Local
Bodies
No remarks
Garbage shall be collected in garbage cans at fixed
places & disposed as per norms laid down in MSW
(management and handling) rules 2000
Government of
Gujarat Local
Bodies
Separate
provision
shall be made in
the estimation.
So project cost
will increase.
9 Aesthetic
Impairment
Aesthetic enhancement through proper
housekeeping of construction sites
Kalpasar Dept or
Designation
Agency
Disposal of construction wastes at the identified
disposal site
…do…
Complete construction activity by removing
all temporary structures, restoring the project and
surrounding areas as near as possible to the pre-
construction condition
…do…
24

25. C. Post-Construction Phase
10 Reservoir
Operation
Incorporate operational mechanism in the barrage
design to allow minimum flow downstream of dam to
maintain riverine ecology
Kalpasar Dept or
Designated
Agency
11 Change in
Hydraulic
Regime
Ensure environmental flow downstream of barrage
during lean season to maintain the riverine ecology
…do…
12 Surface
Water
Contaminati
on
Ensure safe disposal of wastewater discharged from
labour camps
…do…
13 Regular reservoir water quality monitoring for water
quality control
…do…
14 Fisheries
Developme
nt
As per fisheries Management Plan detailed in the EIA
report
Fishery Dept,
GoG
25

26. Chap 10- CONCLUSIONS
 Executive Summary is too large.
 They considered socio-economic environment in the Description of the Environment, but it
is a separate chapter.
 Again the same socio-economy survey is consider in the Description of the Environment, but
it comes in Public Consultation.
 Chap 5- Analysis of Alternatives is comes as chap-2 after Introduction.
 Chap 8- Project Benefits also we write as a Need of the Projects.
 Environmental Management plan & Disaster Management Plan are in the Same Chapter.
 In this report they include list of plates, list of table & list of figures it good for
understanding.
 Overall Report is written very nicely with considering all Environmental Parameters. 26

27. THANK YOU
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