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Envirotech East Private LimitedAn ISO 9001:2008, 14001:2004 & OHSAS:18001:2007

Company Laboratory recognised by Ministry of Environment & Forests, Govt. of India

Bengal Ambuja Commercial Complex

UN F13, 1050/1, Survey Park, Kolkata 700 075, India

Ph: (033) 2418 8127/8128/8601

e-mail: [email protected]

September, 2018

Indian Oil Corporation Ltd.

Environmental Impact Assessment

for

Proposed BS-VI Project

atGuwahati Refinery, District Kamrup, Guwahati, Assam

Envirotech East Pvt. Limited An ISO 9001:2008, 14001:2004 & OHSAS:18001:2007 Company Laboratory Recognised by Ministry of Environment & Forests, Govt. of India

Bengal Ambuja Commercial Complex,

UN-F 13, 1050/1, Survey Park, Kolkata – 700 075

– 2418 8127/8128/8601; Fax – 2418 8128; email: [email protected]

Web: www.envirotecheast.com

Date: 14th August, 2018

TO WHOM IT MAY CONCERN Subject: Proposed BS VI Project at Guwahati Refinery, District Kamrup,

Guwahati in Assam by M/s Indian Oil Corporation Ltd.

Refer File No. J-11011/366/2016-IA.II (I)

This is to certify that we, M/s Envirotech East Pvt. Ltd. have conducted the

Environmental Impact Assessment Study for the subject project, as per the

EIA Notification, 2006 and following the finalized Terms of Reference,

issued by Expert Appraisal Committee, Ministry of Environment, Forest

and Climate Change, Govt. of India, vide its letter (File No. J-

11011/366/2016-IA.II (I)) dated 28th February, 2017. The data

/information presented in this EIA document are factually correct.

for Envirotech East Pvt. Ltd.

(Asoke Kumar Banerjee) Director

mailto:[email protected]

http://www.envirotecheast.com/

Environmental Impact Assessment for Proposed BS-VI Project at Guwahati Refinery, District Kamrup, Guwahati, Assam

CONT. - 1

Contents Envirotech East Pvt. Ltd.

CONTENTS

CHAPTER DESCRIPTION

1.0 INTRODUCTION

1.1 Introduction and Background

1.2 Statutory Clearance

1.3 Site & Surrounding

1.4 Purpose of the EIA/EMP Report and Scope of Study

2.0 PROJECT DESCRIPTION

2.1 Proposed Project

2.2 Project Highlights

2.3 Plant Layout

2.4 Existing Project of Guwahati Refinery and Proposed Project

2.5 Process Description

2.6 Flare System

2.7 Catalyst Summary

2.8 Product Pattern

2.9 Offsite and Associated Facilities

2.9.1 Storage and Mode of Transport of Products

2.9.2 Water

2.9.3 Power & Steam

2.9.4 Service Water

2.9.5 Types and Quantum of Wastewater

2.10 Waste Water Management

2.10.1 Effluent Treatment Facilities

2.10.2 Reuse and Disposal of Treated Wastewater

2.10.3 Compliance with Standards

2.11 Air Emissions

2.12 Solid Waste Generation

2.13 Land

2.14 Manpower Requirement

2.15 Project Cost

2.16 Project Commissioning

3.0 BASELINE ENVIRONMENTAL SCENARIO

3.0 Introduction

3.1 Geology & Geo-Hydrology of the Study Area


CONT. - 2


3.1.1 Geological Features of The Study Area

3.1.2 Sub Surface Geology

3.1.3 Geomorphology of the Project Area

3.1.4 Geo-Hydrological Status of the Study Area

3.1.5 Climate and Rainfall

3.1.6 Seismic History of the Area

3.2 Major Industries in 10 Km Radius Area Around the Project Site

3.3 Land Use

3.3.1 Introduction

3.3.2 Land Use Based on Satellite Imagery

3.4 Soil

3.4.1 Field Study, Sampling & Analysis

3.4.2 Characteristics of Soil in the Study Area

3.5 Meteorology

3.5.1 Seasons

3.5.2 On-Site Meteorological Observations

3.5.3 Results of On-Site Meteorological Data

3.6 Air Quality

3.6.1 Selection of Monitoring Stations

3.6.2 Parameters & Frequency Of Monitoring

3.6.3 Results & Discussions

3.6.4 Traffic Study Assessment

3.7 Water Environment

3.7.1 Surface Water Quality

3.7.2 Ground Water Quality

3.8 Noise

3.8.1 Major Sources of Noise in the Study Area

3.8.2 Ambient Noise Monitoring

3.8.3 Noise Levels in the Study Area

3.9 Ecology

3.9.1 Introduction

3.9.2 Biological Aspect

3.9.3 Classification of Recorded Forest Land

3.9.4 Description of the Study Area

3.9.5 Reconnaissance Survey

3.9.6 Methodology of Ecological Study

3.9.7 Terrestrial Ecology

3.9.8 Terrestrial Fauna


CONT. - 3


3.9.9 Fish

3.9.10 Phytoplankton

3.9.11 Zooplankton

3.9.12 Benthic Macro-Invertebrates

3.10 Demography & Socio-Economic Status

3.10.1 General Description

3.10.2 Demographic Aspects

3.10.3 Occupational Structure

4.0 ENVIRONMENTAL IMPACTS OF THE PROJECT 4.1 Project Activities

4.2 Activities during Construction Phase

4.3 Activities during Operational Phase

4.4 Impacts on Soil and Land Use

4.5 Impacts on Hydrology

4.5.1 Impacts on Hydrology during Construction

4.5.2 Impacts on Hydrology during Operation

4.6 Impacts on Water Quality

4.6.1 Impacts on Water Quality during Construction

4.6.2 Impacts on Water Quality during Operation

4.7 Impacts on Air Quality

4.7.1 Impacts on Air Quality during Construction

4.7.2 Emissions during Operation

4.8 Impacts on Noise

4.8.1 Impacts on Noise during Construction

4.8.2 Impacts on Noise during Operation

4.9 Impacts on Ecology

4.9.1 Impacts on Terrestrial Ecology during Construction

4.9.2 Impacts on Terrestrial Ecology during Operation

4.9.3 Impacts on Aquatic Ecology during Construction

4.10 Impacts on Demography and Socioeconomics

5.0 ENVIRONMENTAL MONITORING ROGRAMME

5.1 Need For Monitoring

5.2 Related Environmental Parameters

5.2.1 Meteorology

5.2.2 Ambient Air Quality

5.2.3 Stack Emissions

5.2.4 Liquid Effluents

5.2.5 Noise Levels

5.3 Monitoring Conducted

5.3.1 Stack Emission


CONT. - 4


5.3.2 Ambient Air

5.3.3 Fugitive Emission Monitoring

5.3.4 Liquid Effluent

5.3.5 Noise


6.0 DISASTER MANAGEMENT PLAN 6.1 Introduction

6.2 Risk Assessment

6.3 Disaster Management Plan

6.4 Main Hazards of the Plant

6.5 Scope of the Plan

6.6 On-Site Emergency Plan

6.7 Off-Site Emergency Plan

6.7.1 Probable Off-Site Emergency Scenario

6.7.2 Objective of Off-Site Emergency Plan

6.7.3 Chief Off-Site Emergency Coordinator (COEC)

6.7.4 Establishing of Central Crisis Control Room (CCR)

6.7.5 Communication System

6.7.6 Others

6.7.7 Responsibility of Police Department – Security & Vacuation

6.7.8 Role of Fire Services

6.7.9 Role of Medical Services

6.7.10 Role of Railways

6.7.11 Evacuation & Rehabilitation

6.8 DO’s and DON’Ts in Emergency Situations

7.0 ENVIRONMENTAL MANAGEMENT PLAN

7.0 Introduction

7.1 During Design (Design Safety and Environmental Plan)

7.2 During Construction (General)

7.3 During Operation (Environment Conscious Design)

7.4 Corporate Social Responsibility

7.5 Green Belt Development

7.6 Occupational Health & Safety

7.6.1 Health & Safety Aspects of Hazardous & Toxic Chemicals

7.6.2 Brief Outline on Human Response to Chemical Exposure and their Symptoms, First Aid and Treatment

7.6.3 First Aid and Treatment

7.6.4 Fire Protection & Safety Management

7.6.5 Medical Surveillance

7.7 Rain Water Harvesting

7.8 Environmental Management Cell

8.0 PROJECT BENEFITS

8.1 Environmental Cost Component


CONT. - 5


9.0 SUMMARY & CONCLUSION

9.1 Introduction and background

9.2 Site location

9.3 Project highlights

9.4 Baseline Environmnetal Scenario

9.5 Environmental impacts of proposed project

9.6 Environmental management plan

10.0 DISCLOSURE OF CONSULTANT ENGAGED

10.1 Brief Profile of M/s Envirotech East Pvt. Ltd.

• ANNEXURES

ANNEXURE DESCRIPTION

I Final ToRs from MoEF&CC, New Delhi

II Existing ECs & CTO

III EC Compliance Mon Report by RO, MoEF&CC

IV Environmental Standard for Petroleum Oil Refinery

V Relevant Indian Standards

VI Ambient Air Quality Data

Environmental Impact Assessment for Proposed BS VI Project at Guwahati Refinery, District Kamrup, Guwahati, Assam

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1.0 Introduction & Background Envirotech East Pvt. Ltd.

CHAPTER-1.0 INTRODUCTION &

BACKGROUND

1.1 INTRODUCTION AND BACKGROUND Indian Oil Corporation Ltd. (Indian Oil) is India's largest public

corporation in terms of revenue and is one of the five Maharatna status

companies of India, apart from Coal India Limited, NTPC Limited, Oil and

Natural Gas Corporation and Steel Authority of India Limited. It is the

highest ranked Indian company and the world's 168th largest public

corporation in the prestigious Fortune 'Global 500' listing for the year

2017. Beginning in 1959 as Indian Oil Company Ltd., Indian Oil

Corporation Ltd. was formed in 1964 with the merger of Indian Refineries

Ltd. (Estd. 1958).

Being The Energy of India is about Indian Oil's business interests

encompassing the entire hydrocarbon value chain - from refining, pipeline

transportation & marketing, to exploration & production of crude oil &

gas, petrochemicals, gas marketing, alternative energy sources and

globalisation of downstream operations.

Indian Oil and its subsidiaries account for nearly half of India’s petroleum

products market share, 35% share in refining capacity and 71%

downstream sector pipelines capacity in India.

The Indian Oil Group of companies owns and operates 11 of India's 23

refineries with a combined refining capacity of 80.7 million metric tonnes

per annum (MMTPA). There are nine refineries, located at Digboi,

Guwahati, Koyali, Barauni, Haldia, Mathura, Panipat, Bongaigaon and

Paradeep under the umbrella of Indian Oil Corporation Limited. Besides,

these also include two refineries of subsidiary Chennai Petroleum

Corporation Ltd. (CPCL), one at Chennai and the other at Narimanam.

http://en.wikipedia.org/wiki/Maharatna

http://en.wikipedia.org/wiki/India

http://en.wikipedia.org/wiki/Coal_India_Limited

http://en.wikipedia.org/wiki/NTPC_Limited

http://en.wikipedia.org/wiki/Oil_and_Natural_Gas_Corporation


http://en.wikipedia.org/wiki/Steel_Authority_of_India_Limited


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The Corporation's cross-country pipelines network, for transportation of

crude oil to refineries and finished products to high-demand centres,

spans about 13,400 km. With a throughput capacity of 94.2 MMTPA for

crude oil and petroleum products and 9.5 MMSCMD for gas, this network

meets the vital energy needs of the consumers in an efficient,

economical and environment-friendly manner. The company operates the

largest and the widest network of fuel stations in the country.

GUWAHATI REFINERY Guwahati Refinery is the country’s first Public Sector Refinery as well as

Indian Oil’s first Refinery serving the nation since 1962. Built with

Rumanian assistance, the initial crude processing capacity at the time of

commissioning of this Refinery was 0.75 MMTPA and the Refinery was

designed to process a mix of OIL and ONGC crude. The refining capacity

was subsequently enhanced to 1.0 MMTPA and with INDMAX, the pilot

plant for first in-house technology of IndianOil, the ISOSIV and

Hydrotreater the Refinery has been able produce eco-friendly fuels.

Presently, Assam and imported crude oils are being processed. The

Assam crude oil is being supplied from Assam fields by M/s OIL INDIA

LIMITED through a cross-country pipeline and imported crude is sourced

from Barauni Refinery through rakes.

Guwahati Refinery produces various products like LPG, Motor Spirit,

Aviation Turbine Fuel, Superior Kerosene Oil, High Speed Diesel, Sulphur

and Raw Petroleum Coke and supplies them to Northeastern India as well

as beyond, upto Siliguri end through the Guwahati-Siliguri Pipeline,

spanning 435 KM, which was the first Pipeline of IndianOil and

commissioned in 1964. Most of the products of Guwahati Refinery are

evacuated through pipeline and some quantity also through road

transportation.

PROPOSED PROJECT

As per the declaration of Government of India of 6th January, 2016, it has

been proposed to implement BS-VI grade fuel in the entire country w.e.f.

1st April 2020 i.e., switching over directly from BS-IV grade fuels to BS-VI


C1 - 3


grade fuels. Thus, it is imperative that the refinery up gradation should

consider the production of BS-VI grade fuels by inducting suitable new

units and revamp of existing units.

Following facilities are proposed for implementation under BS-VI at

Guwahati Refinery:

Revamp Units:

▪ HDT (Licensor - M/s UOP) : 600 to 800 KTPA

▪ HGU (Licensor - M/s Technip) : 10 to 12 KTPA

▪ NHDT-ISOM (Licensor - M/s Axens): 45 to 54 KTPA

▪ INDAdeptG (IOCL R &D): Additional Parallel reactors and

Compressors. No change in capacity

New Units/Facility:

▪ IndeSelectG : 80 KTPA

▪ M/s Auto Blending System

In this connection, M/s Envirotech East Pvt. Ltd. (EEPL) was assigned the

job of undertaking an Environmental Impact Assessment (EIA) for the

proposed project and formulate a proper Environmental Management

Plan (EMP).

1.2 STATUTORY CLEARANCE Various environmental permits are required to implement the Project.

Guwahati Refinery has obtained all necessary Environmental Clearances

(EC) for various projects (the copy of the last EC enclosed as Annexure-

II and the Compliance Status of the conditions, mentioned therein,

enclosed as Annexure III).

1.3 SITE & SURROUNDING

Guwahati Refinery is located at Guwahati, District Kamrup in Assam. It is

surrounded by some pharmaceutical, chemical, food processing; cement

industries, etc. operating in 10 km radius area around the Guwahati

Refinery. Its geo-graphical co-ordinates are latitudes 26˚10′51.27″N to


C1 - 4


26˚11′20.01″N and longitudes 91˚48′11.38″E to 91˚48′57.08″E with

above mean sea level (AMSL) around 300 ft.

The general topography of the area is flat surrounded by hilly regions

and the general elevation of the site is 220 ft AMSL. New Guwahati

Railway Station is about 2.0 km. from the refinery site. National

Highway-17 is passing through the south direction, around 7.5 km from

the refinery. River Brahmaputra is passing approx. 2.5 km distance in

north direction w.r.t. the refinery. The nearest Airport is Lokpriya

Gopinath Bordoloi International Airport, Guwahati, which is about 24 km.

NE from the refinery boundary. The project site already has proper road

linkage for transport of materials and equipments.

The site is well developed and has all necessary infrastructure facilities

such as motorable road upto the refinery site, nearness to rail head,

telephone telefax facilities etc.

The location of Guwahati Refinery is presented in Figure 1.1.

FIGURE 1.1: SITE LOCATION ON GOOGLE VIEW

Guwahati

Refinery


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1.4 PURPOSE OF THE EIA/EMP REPORT AND SCOPE OF STUDY

As per EIA Notification 2006, published on 14th September 2006,

and its subsequent amendments, all petroleum refining industries

are listed at S.N. 4(a) under category “A” and shall require prior

Environmental Clearance from Ministry of Environment, Forest &

Climate Change (MoEF&CC), Govt. of India.

In this context, Guwahati Refinery submitted an online application

along with filled up ‘Form 1’ in the prescribed format and Project

Feasibility Report to MoEFCC for seeking prior Environmental

Clearance for its proposed project dated 13th December, 2016.

Subsequently, the proposal was considered by the EAC in its 17th

meeting (Industry-2), held during 26th to 29th December, 2016 to

determine the Terms of Reference (TOR) for undertaking detailed

EIA study for obtaining Environmental Clearance in accordance with

the provisions of the EIA Notification 2006. Accordingly, MoEFCC

issued one letter (Ref. No J-11011/366/2016-IA.II (I)) dated

28th February, 2017, prescribing the additional TOR along with

standard TOR, as available on the Ministry website (Annexure-I &

Table-1.1).

Accordingly, the EIA/EMP Report has been prepared,

accommodating all the components, based on the prescribed TORs

for its submission to MoEFCC for seeking prior Environmental

Clearance.

The public hearing is not required as per para 7(ii) of EIA

Notification 2006.

This EIA Report is prepared on the basis of the available secondary

data/literature along with the on-site data collected, in connection

with the EIA study for 80 TPH CFBC Pet coke Boiler Project at

Guwahati Refinery during the period (9th December, 2016–8th

March, 2017), generated through on-site monitoring of relevant

environmental components and parameters.


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TABLE-1.1

FINALISED “TERMS OF REFERENCE” & THEIR REFERENCE IN EIA

REPORT

Sl.

No. Finalised “Terms of Reference”

Reference in EIA

Report

Specific ToR Points:

1 Public hearing exempted as para 7(ii) of EIA, Notification 2006

The public hearing is not

required as per para 7(ii)

of EIA Notification 2006.

2 A separate chapter on status of compliance of Environmental conditions granted by Ministry to be provided. As per circular dated 30th May, 2012 issued by MoEF, a certified report by RO, MoEF&CC on status of compliance of conditions on existing unit to be provided in EIA-EMP report.

Annexure-III

3 Details of effluent treatment plant, inlet and treated water quality with specific efficiency of each treatment unit in reduction in respect of all concerned/ regulated environmental parameters. Also, include treatment details such as primary (physico-chemical), secondary (biological) and tertiary (activated carbon filters) treatment systems.

Chapter-2.0 Section-2.9

4 Complete process flow diagram describing each unit, its capacity along-with material and energy balance.


5 Details of intermediate product, their storage and final products to be manufactured.


6 Sulphur balance giving input from crude, refinery fuel (if used) and any other outside fuel and output in various products and emissions.


7 Storm water management plan Chapter-2.0 Section-2.9

Standard ToR Points: 1 Executive Summary Prepared

2 Introduction

i) Details of the EIA Consultant including NABET accreditation

Chapter- 8.0

ii) Information about the project proponent Chapter-1.0 Section-1.1

iii) Importance and benefits of the project Chapter-1.0 Section-1.1


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3 Project Description

i) Cost of project and time of completion. Chapter-2.0 Section-2.14 & 2.15

ii) Products with capacities for the proposed project. Chapter-2.0 Section-2.4

iii) If expansion project, details of existing products with capacities and whether adequate land is available for expansion, reference of earlier EC if any.


iv) List of raw materials required and their source along with mode of transportation.


v) Other chemicals and materials required with quantities and storage capacities


vi) Details of Emission, effluents, hazardous waste generation and their management.


vii) Requirement of water, power, with source of supply, status of approval, water balance diagram, man-power requirement (regular and contract)


viii) Process description along with major equipment and machineries, process flow sheet (quantitative) from raw material to products to be provided


ix) Hazard identification and details of proposed safety systems.

Chapter-6.0

x) Expansion/modernization proposals:

a. Copy of all the Environmental Clearance(s) including Amendments thereto obtained for the project from MOEF/SEIAA shall be attached as an Annexure. A certified copy of the latest Monitoring Report of the Regional Office of the Ministry of Environment and Forests as per circular dated 30th May, 2012 on the status of compliance of conditions stipulated in all the existing environmental clearances including Amendments shall be provided. In addition, status of compliance of Consent to Operate for the ongoing existing operation of the project from SPCB shall be attached with the EIA-EMP report.

Annexure-II

b. In case the existing project has not obtained environmental clearance, reasons for not taking EC under the provisions of the EIA Notification 1994 and/or EIA Notification 2006 shall be provided. Copies of Consent to Establish/No Objection Certificate and Consent to Operate (in case of units operating prior to EIA Notification 2006, CTE and

Not Applicable


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CTO of FY 2005-2006) obtained from the SPCB shall be submitted. Further, compliance report to the conditions of consents from the SPCB shall be submitted.

4 Site Details

i) Location of the project site covering village, Taluka/Tehsil, District and State, Justification for selecting the site, whether other sites were considered.


ii) A toposheet of the study area of radius of 10km and site location on 1:50,000/1:25,000 scale on an A3/A2 sheet. (including all eco-sensitive areas and environmentally sensitive places)


iii) Details w.r.t. option analysis for selection of site Not applicable

iv) Co-ordinates (lat-long) of all four corners of the site. Chapter-1.0 Section-1.3

v) Google map-Earth downloaded of the project site. Chapter-1.0 Section-1.3

vi) Layout maps indicating existing unit as well as proposed unit indicating storage area, plant area, greenbelt area, utilities etc. If located within an Industrial area/Estate/Complex, layout of Industrial Area indicating location of unit within the Industrial area/Estate


vii) Photographs of the proposed and existing (if applicable) plant site. If existing, show photographs of plantation/greenbelt, in particular.

Chapter-7.0

viii) Landuse break-up of total land of the project site (identified and acquired), government/ private - agricultural, forest, wasteland, water bodies, settlements, etc shall be included. (not required for industrial area)


ix) A list of major industries with name and type within study area (10km radius) shall be incorporated. Land use details of the study area


x) Geological features and Geo-hydrological status of the study area shall be included.


xi) Details of Drainage of the project upto 5km radius of study area. If the site is within 1 km radius of any major river, peak and lean season river discharge as well as flood occurrence frequency based on peak rainfall data of the past 30 years. Details of Flood Level of the project site and maximum Flood



C1 - 9


Level of the river shall also be provided. (mega green field projects)

xii) Status of acquisition of land. If acquisition is not complete, stage of the acquisition process and expected time of complete possession of the land.


xiii) R&R details in respect of land in line with state Government policy.

R & R is not an issue for the project

5 Forest and wildlife related issues (if applicable):

i) Permission and approval for the use of forest land (forestry clearance), if any, and recommendations of the State Forest Department. (if applicable)

Not Applicable as no forest land is involved.

ii) Landuse map based on High resolution satellite imagery (GPS) of the proposed site delineating the forestland (in case of projects involving forest land more than 40 ha)

iii) Status of Application submitted for obtaining the stage I forestry clearance along with latest status shall be submitted.

iv) The projects to be located within 10 km of the National Parks, Sanctuaries, Biosphere Reserves, Migratory Corridors of Wild Animals, the project proponent shall submit the map duly authenticated by Chief Wildlife Warden showing these features vis-à-vis the project location and the recommendations or comments of the Chief Wildlife Warden-thereon

v) Wildlife Conservation Plan duly authenticated by the Chief Wildlife Warden of the State Government for conservation of Schedule I fauna, if any exists in the study area

vi) Copy of application submitted for clearance under the Wildlife (Protection) Act, 1972, to the Standing Committee of the National Board for Wildlife

6 Environmental Status

i) Determination of atmospheric inversion level at the project site and site-specific micro- meteorological data using temperature, relative humidity, hourly wind speed and direction and rainfall.


ii) AAQ data (except monsoon) at 8 locations for PM10, PM2.5, SO2, NOX, CO and other parameters relevant to the project shall be collected. The monitoring stations shall be based CPCB guidelines and take into account the pre-



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dominant wind direction, population zone and sensitive receptors including reserved forests.

iii) Raw data of all AAQ measurement for 12 weeks of all stations as per frequency given in the NAQQM Notification of Nov. 2009 along with - min., max., average and 98% values for each of the AAQ parameters from data of all AAQ stations should be provided as an annexure to the EIA Report.

Refer Annexure - VI

iv) Surface water quality of nearby River (100m upstream and downstream of discharge point) and other surface drains at eight locations as per CPCB/MoEF&CC guidelines.


v) Whether the site falls near to polluted stretch of river identified by the CPCB/MoEF&CC, if yes give details.

No

vi) Ground water monitoring at minimum at 8 locations shall be included.


vii) Noise levels monitoring at 8 locations within the study area.


viii) Soil Characteristic as per CPCB guidelines. Chapter-3.0 Section-3.4

ix) Traffic study of the area, type of vehicles, frequency of vehicles for transportation of materials, additional traffic due to proposed project, parking arrangement etc.

Chapter-3.0 Section-3.6.4

x) Detailed description of flora and fauna (terrestrial and aquatic) existing in the study area shall be given with special reference to rare, endemic and endangered species. If Schedule- I fauna are found within the study area, a Wildlife Conservation Plan shall be prepared and furnished.


xi) Socio-economic status of the study area. Chapter-3.0 Section-3.10

7 Impact and Environment Management Plan

i) Assessment of ground level concentration of pollutants from the stack emission based on site- specific meteorological features. In case the project is located on a hilly terrain, the AQIP Modelling shall be done using inputs of the specific terrain characteristics for determining the potential impacts of the project on the AAQ. Cumulative impact of all sources of emissions (including transportation) on the AAQ of the area shall be assessed. Details of the model used and the input data used for



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modelling shall also be provided. The air quality contours shall be plotted on a location map showing the location of project site, habitation nearby, sensitive receptors, if any.

ii) Water Quality modelling – in case of discharge in water body

There will be no

additional treated effluent discharge

after BS VI project. iii) Impact of the transport of the raw materials and end

products on the surrounding environment shall be assessed and provided. In this regard, options for transport of raw materials and finished products and wastes (large quantities) by rail or rail-cum road transport or conveyor- cum-rail transport shall be examined.


iv) A note on treatment of wastewater from different plant operations, extent recycled and reused for different purposes shall be included. Complete scheme of effluent treatment. Characteristics of untreated and treated effluent to meet the prescribed standards of discharge under E(P) Rules.


v) Details of stack emission and action plan for control of emissions to meet standards.


vi) Measures for fugitive emission control Chapter-7.0 Section-7.3

vii) Details of hazardous waste generation and their storage, utilization and management. Copies of MOU regarding utilization of solid and hazardous waste in cement plant shall also be included. EMP shall include the concept of waste-minimization, recycle/reuse/recover techniques, Energy conservation, and natural resource conservation.


viii) Proper utilization of fly ash shall be ensured as per Fly Ash Notification, 2009. A detailed plan of action shall be provided.

Not Applicable

ix) Action plan for the green belt development plan in 33 % area i.e. land with not less than 1,500 trees per ha. Giving details of species, width of plantation, planning schedule etc. shall be included. The green belt shall be around the project boundary and a scheme for greening of the roads used for the project shall also be incorporated.



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x) Action plan for rainwater harvesting measures at plant site shall be submitted to harvest rainwater from the roof tops and storm water drains to recharge the ground water and also to use for the various activities at the project site to conserve fresh water and reduce the water requirement from other sources.


xi) Total capital cost and recurring cost/annum for environmental pollution control measures shall be included.

Chapter-8.0

xii) Action plan for post-project environmental monitoring shall be submitted.

Chapter-5.0

xiii) Onsite and Offsite Disaster (natural and Man-made) Preparedness and Emergency Management Plan including Risk Assessment and damage control. Disaster management plan should be linked with District Disaster Management Plan.

Chapter-6.0

8 Occupational health

i) Plan and fund allocation to ensure the occupational health & safety of all contract and casual workers


ii) Details of exposure specific health status evaluation of worker. If the workers' health is being evaluated by pre designed format, chest x rays, Audiometry, Spirometry, Vision testing (Far

iii) & Near vision, colour vision and any other ocular defect) ECG, during pre-placement and periodical examinations give the details of the same. Details regarding last month analysed data of above mentioned parameters as per age, sex, duration of exposure and department wise.

iv) Annual report of health status of workers with special reference to Occupational Health and Safety.

9 Corporate Environment Policy

i) Does the company have a well laid down Environment Policy approved by its Board of Directors? If so, it may be detailed in the EIA report.

Chapter-7.0 ii) Does the Environment Policy prescribe for standard operating process / procedures to bring into focus any infringement / deviation / violation of the environmental or forest norms / conditions? If so, it may be detailed in the EIA.

iii) What is the hierarchical system or Administrative


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order of the company to deal with the environmental issues and for ensuring compliance with the environmental clearance conditions? Details of this system may be given.

iv) Does the company have system of reporting of non compliances / violations of environmental norms to the Board of Directors of the company and / or shareholders or stakeholders at large? This reporting mechanism shall be detailed in the EIA report

10 Details regarding infrastructure facilities such as sanitation, fuel, restroom etc. to be provided to the labour force during construction as well as to the casual workers including truck drivers during operation phase.


11 Enterprise Social Commitment (ESC)

Adequate funds (at least 2.5 % of the project cost) shall be earmarked towards the Enterprise Social Commitment based on Public Hearing issues and item-wise details along with time bound action plan shall be included. Socio-economic development activities need to be elaborated upon.


12 Any litigation pending against the project and/or any direction/order passed by any Court of Law against the project, if so, details thereof shall also be included. Has the unit received any notice under the Section 5 of Environment (Protection) Act, 1986 or relevant Sections of Air and Water Acts? If so, details thereof and compliance/ATR to the notice(s) and present status of the case.

There is no litigation,

13 A tabular chart with index for point wise compliance of above TOR.

Chapter-1.0 Table- 1.1

Specific ToR Points

1 Complete process flow diagram describing each unit, its capacity along-with material and energy balance.


2 Details of intermediate product, their storages and final products to be manufactured.


3 Sulphur balance giving input from crude, refinery fuel (if used) and any other outside fuel and output in various products and emissions.


4 Details of proposed source-specific pollution controls chemes and equipment to meet the

Chapter-2.0


C1 - 14


national standards for petroleum refinery.

5 Details of emissions from all the stacks including volumetric flow rate


6 Details on availability of raw materials (crude oil, natural gas, chemicals, etc.), its source and storage at the plant.


7 Details on mode of transportation of crude and products.


8 Details of storage capacity of crude and products. Chapter-2.0 Section-2.4

9 Ambient air quality data should include hydrocarbon ( methane and non-methane), VOC, Ni & V etc.


10 Efforts to minimize water consumption, effluent discharge and to maintain quality of receiving water body.


11 Details of effluent at men plant, inlet and treated water quality with specific efficiency of each treatment unit in reduction in respect of all con corned/ regulated environmental parameters. Also, include treatment details such as primary (physico-chemical), secondary (biological) and tertiary (activated carbon filters) treatment systems.


12 Storm water management plan. Chapter-2.0 Section-2.9

13 Estimation SO2 and NOx emissions load. Chapter-2.0 Section-2.4

14 Details on flaring system. Chapter-2.0 Section-2.5

15 Details of VOC recovery devices in the storage tanks.


16 Arrangement for spill management. Chapter-7.0 Section-7.3

17 Oily sludge management plan. Chapter-2.0 Section-2.9

18 Risk Assessment & Disaster Management Plan Chapter-6.0 Section-6.2

i) Identification of hazards

ii) Consequence Analysis

iii) Risk assessment should also include leakages and location near to refinery & proposed measures for risk reduction.

iv) Arrangement for fire protection and control.


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2.0 Project Description Envirotech East Pvt. Ltd.

CHAPTER-2.0 PROJECT DESCRIPTION

2.1 PROPOSED PROJECT

BS-[V auto-fuel specifications will be applicable in entire country from

April, 2017. Guwahati Refinery is installing an indigenous technology

developed by IOCL R&D for the first time named INDAdeptG Unit, for

reduction of sulphur of Indmax heavy gasoline. INDAdeptG Unit will

reduce sulphur of Indmax heavy gasoline from 1000 ppm to below 50

ppm. In this process there will be a RON loss of 2 units. Project

activities of INDAdeptG unit are under progress. Mechanical

completion of INDAdeptG is planned by Oct' 16 and commissioning of

the unit is targeted in Nov' 16. Post INDAdeptG commissioning,

Guwahati Refinery would be able to produce 100 % BS-IV MS. For BS-

IV HSD, Guwahati Refinery has replaced the existing HDT catalyst in

Jan ' 16 M&I S/D for production of BS-IV HSD.

As per the declaration of Government of India of 6th January, 2016, it

has been proposed to implement BS-VI grade fuel in the entire

country w.e.f. 1st April 2020 i.e., switching over directly from BS-IV

grade fuels to BS-VI grade fuels. Thus, it is imperative that the

refinery up gradation should consider the production of BS-VI grade

fuels by inducting suitable new units and revamp of existing units.

Following facilities are proposed under BS-VI Project at Guwahati

Refinery:

Revamp Units:





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Compressors. No change in capacity

New Units/Facility:



2.2 PROJECT HIGHLIGHTS

The principal features or highlights of the Proposed BS VI Project at

Guwahati Refinery under study are as follows:

Location Guwahati in Assam

Land requirement The proposed project shall be installed on the available land within the existing plant

boundary of the refinery.

Cooling system Closed cycle cooling system with cooling towers

(existing system).

Makeupwater Requirement & Source

10m3/hr. additional make up water will be

required in the refinery after the

implementation of BS VI project, which will be

sourced from the ETP recycled water. No

additional fresh water will be required.

The fresh water requirement of the refinery is

fulfilled from Brahmaputra River.

Power Requirement & Source

Around 5 MW additional power will be required,

which shall be sourced from the existing

facilities of the refinery.

Effluent Generation,

Treatment & Disposal The waste water generation from the refinery

after the implementation of BS VI project will

be around 255 m3/hr., the additional

generation from BS VI project, being around

10 m3/hr.

As per the existing practice, the waste water,


C2 - 3


generated in the refinery after the

implementation of BS VI project will be treated

in the existing Effluent Treatment Plant of the

refinery. The major portion of the treated

effluent of the refinery will be recycled to the

refinery and the remaining portion will be

discharged into Brahmaputra River as per the

existing practice.

There will be no additional treated effluent

discharge after BS VI project.

Air Emission Air emission of the refinery shall remain at the

existing level.

Solid Waste

Generation There will be no regular generation of spent

catalyst as solid waste. The spent catalyst

after its End of Life (EOL) will be safely

secured in sealed container for auction. After

auction, the successful party will collect the

safely stored spent catalyst from Guwahati

Refinery for treatment at their end.

Manpower requirement

16

Cost Rs. 513.0Crores

2.3 PLANT LAYOUT

Plant layout depicting the existing units as well as the proposed new

unit has been presented in Figure-2.1.

2.4 EXISTING PROJECT OF GUWAHATI REFINERY AND

PROPOSED PROJECT Guwahati Refinery is the country’s first Public Sector Refinery as well

as IndianOil’s first Refinery serving the nation since 1962. Built with

Rumanian assistance, the initial crude processing capacity at the time

of commissioning of this Refinery was 0.75 MMTPA and the Refinery

was designed to process a mix of OIL and ONGC crude. The refining


C2 - 4


capacity was subsequently enhanced to 1.0 MMTPA. Presently, Assam

and imported crude oils are being processed. The Assam crude oil is

being supplied from Assam fields by M/s OIL INDIA LIMITED through

a cross-country pipeline and imported crude is sourced from Barauni

Refinery through rakes.

Guwahati Refinery produces various productslikeQuality LPG, Motor

Spirit, Aviation Turbine Fuel, Pipeline Compatible Kerosene, High

Speed Diesel, Sulphur and Raw Petroleum Cokeand supplies them to

North-eastern India as well as beyond, uptoSiliguri end through the

Guwahati-Siliguri Pipeline, spanning 435 KM, which was the first

Pipeline of IndianOil and commissioned in 1964. Most of the products

of Guwahati Refinery are evacuated through pipeline and some

quantity also through road transportation.

In the primary unit of the Refinery i.e., the Crude Distillation Unit

(CDU), desalted crude from the desalter is heated up through a series

of heat exchangers and is fed into a pre fractionator column. Here the

lighter gases, LPG and unstabilised gasoline are separated. The

outputs from CDU aregasoline, Kero-I, Kero-II and Straight Run Gas

Oil. Reduced Coke Oil (RCO) which is the bottom product from the

main fractionating column, forms the main raw material for Coking

unit and Indmax.

Gasoline from the main fractionator is fed into Naptha Splitter where

it is separated into three different fractions namely Light Naphtha

(LN), Reformate Naptha (RN) and Heavy Naptha (HN). LN forms the

feed for Hydrogen unit&ISOM Unit, while RN is a component in the

gasoline pool and HN is fed to the Hydrotreater unit.

With its main secondary unit, the Delayed Coking Unit (DCU), the

Refinery produces middle distillates from heavy ends. Main feedstock

to DCU is RCO, which is heated to high temperatures of about 500oC

in a furnace. Due to high temperatures, RCO is thermally cracked and

yields various hydrocarbon fractions like LPG, coker gasoline, coker

kerosene, coker gas oil, coker fuel oil, residual fuel oil and coke. An


C2 - 5


upcoming project in the Refinery is modernization of DCU chambers

with new Coke Cutting System and Heading-Unheading System.

The Hydrotreating Unit for improving the quality of High Speed Diesel

(HSD) by removal of reducing Sulphur content and boosting the

Cetane Number of HSD and smoke point of SKO and ATF was

commissioned at Guwahati Refinery in 2002.

The Sulphur Recovery Unit in the Refinery takes care of the sour off

gases from the various units for removal of Hydrogen Sulphide. This is

done by Amine treatment after which sulphur is recovered from the

off gases.

With growing environmental consciousness, Guwahati Refinery has

ventured into ecologically friendly fuel and subsequently installed

MSQ, Hydrotreater and INDAdeptG. The MSQ and INDAdeptG units

produce MS conforming to BS IV norms (sulphur < 50ppm). The

Hydrotreater Unit (HDT) enables the Refinery to produce High Speed

Diesel of very low sulphur (<50 ppm) and cetane number conforming

to BS IV specifications. The HDT also produces ATF, Superior

Kerosene Oil with high smoke point and low sulphur. & Pipeline

Compatible Kerosene (PCK)

It would be relevant to mention that Guwahati Refinery is in the

process of the installation of one 80 TPH pet coke boiler after necessary Statutory Clearances, which will replace the existing 2 x 20

TPH boilers (3 & 4) as they have outlived their life and are operating at very low efficiency.

The capacity of the existing unitsof the refinery as well as the units

under implementation is given in Table-2.1.

https://en.wikipedia.org/wiki/Clean_fuel

https://en.wikipedia.org/wiki/Hydrotreater

https://en.wikipedia.org/wiki/Sulphur

https://en.wikipedia.org/wiki/Cetane_number

https://en.wikipedia.org/wiki/Smoke_point


C2 - 6


TABLE 2.1

CAPACITY OF VARIOUS PROCESS UNITS

Sl No Units Capacity

Existing Units MMTPA

1 Crude Distillation Unit (CDU) 1.00

2 Delayed Coker Unit (DCU) 0.44

3 Naphtha Splitter Facility (NSF) 0.13

4 Hydrotreater Unit (HDT) 0.66

5 HydrogenGeneration Unit (HGU) 10 TMTA

6 Sulphur Recovery Unit (SRU) 5 TPD

7 IndaneMaximisation (INDMAX) Unit 0.15

8 Motor Spirit Quality

(MSQ)UpgradationProject 0.05

9

Captive Power Plant

Boilers:5 nos.

TGs: 3 nos.

2 x 20 TPH,

1 x 40 TPH &

2 x 50 TPH

2 x 8 MW &

1 x 12 MW

Project under implementation after Statutory

Clearances

1 CFBC Pet coke Boiler 80 TPH

PROPOSED PROJECT

Guwahati Refinery is considering implementation of various facilities

to produce BS-VI compliant MS and HSD. Accordingly, following facilities have been approved for implementation under BS-VI:

There is proposal to implement BS-VI Projects at Guwahati Refinery to

produce BS-VI quality fuels. For this purpose, Guwahati Refinery has

carried out an in-house study in consultation with Refinery Head


C2 - 7


Quarter Technical team and IOCL R&D on various options for

production of BS-VI MS and HSD at Guwahati Refinery. Based on the

detail review, the following configuration has been finalized for

production of 100% BS-VI MS and HSD at Guwahati Refinery:

CAPACITY PURPOSE

EXISTING NEW

New Unit

New indeSelectG

Unit

- 80 KTPA To reduce sulphur of lndmax

light gasoline and coker gasoline for making MS

components to meet BS-VI MS Pool specifications

Existing Units, to be revamped

INDAdeptG Unit 35 KPTA 35 KPTA To increase severity of

INDAdeptG unit to produce

heavy gasoline meeting BS-

VI MS pool specifications

NHDT-ISOM Unit

45 KTPA 54 KTPA To meet aromatics content

of BS-VI MS pool

specifications

HGU Unit 10 KTPA 12 KTPA To meet increase

requirement of additional

hydrogen for HDT & ISOM

for production of fuels

meeting BS-VI specifications

HDT Unit 600 KTPA 800 KTPA To produce diesel meeting

BS- VI specifications

MS Auto Blender

- - To produce on specification

MS after online blending of

MS component streams

The sulphur balance for Guwahati Refinery for both pre-project and

post-project scenarios is shown in Figures – 2.2A & 2.2B respectively.


C2 - 8


The steam balance for the post-project scenario of the refinery is

presented as Figure – 2.3.

2.5 PROCESS DESCRIPTION

The main objective of Deisopentaniser (DIP) project is to increase the

capacity of ISOM unit by 20% by recovering isopentane component

from ISOM feed. Deisopentaniser column primarily separates out the

isopentane component, already present in the feed. The top product

from the DIP, being a high RON stream, is directly blended with

product coming from De-Isohexaniser column of ISOM unit and the

combined stream viz. Isomerate is sent to the MS pool. The bottom

product is routed to the existing ISOM reactors for isomerization.

Naphtha Hydrotreater (NHT) section of ISOM unit is designed for

treating ISOM feed i.e., Light Naphtha Stream and Heart cut stream

from 3-cut splitter for removal of impurities (e.g. sulfur, nitrogen,

oxygen, metals etc.) from ISOM feed. NHT react or effluent is routed to

the stripper via HDT separator drum. The purpose of stripper is to

remove H2S, H2 and light hydrocarbons from the product stream.

Presently, Stripper bottom is directly routed to ISOM Feed Surge Drum

through Sulfur guard bed.

DIP feed System

In order to process Stripper bottom hydrotreated naphtha in the new

Deisopentaniser column, a new 3” tapping downstream of the tube

side outlet of stripper feed bottom exchanger is taken. A new control

valve is provided in DIP feed line to control column feed flow in

cascade with stripper bottom level. A new selector switch is provided

to toggle between existing control valve and new DIP feed control

valve.

The feed under flow control goes to the double pipe feed preheat

exchanger (Feed vs column bottom) and is fed to the Deisopentaniser

column for splitting.

Deisopentaniser Column


C2 - 9


Refer to the Process flow diagram document (Figure-2.4) for the

main process scheme, process control, operating conditions etc.

The preheated feed enters the DIP column. DIP column consists of 81

trays with feed tray being#39 from top. This column is equipped with a

vertical thermo syphon reboiler at the bottom, heated by De-

superheated steam. This reboiler controls 79th tray temperature by

controlling the steam flow to the reboiler through steam control valve.

The bottom product is drawn from DIP Column bottom under level

control. Column bottom pump discharge is routed to feed preheater

and then further cooled in the trim cooler before routing it to the ISOM

feed surge drum.

Column overhead vapor is condensed through air cooler to around

55°C and is routed to the reflux drum. Apart of it after pumping

through reflux cum product pump is returned back as reflux to the

column under flow control, set by reflux drum level. Isopentane rich

stream is drawn by the same pump from the reflux drum and is routed

to MS pool via water cooler. DIP Top product flow is controlled by flow

control valve, which is cascaded with either n-Pentane analyser or 6th

tray temperature of column. A selector switch is provided to toggle

between analyser control and temperature control.

DIP column top pressure is controlled by pressure control valve,

located at the inlet of air cooler. A hot vapor bypass with differential

pressure control valve is also provided to maintain the pressure of

reflux drum. Flare control valve is also provided on the reflux drum for

removal of non-condensable, if any.

The column and reflux drum are provided with pressure safety valves.

The discharges from all the pressure safety valves are routed to the

existing flare header of ISOM unit. Two nos. PSVs (one inline, one

stand-by) with bypass line are provided at DIP column where as single

PSV with bypass line has been provided for the reflux drum.


C2 - 10


Operation philosophy

The Deisopentaniser unit is designed to operate at 6.75 TPH with 50%

turndown ratio. The column is also designed for a separate check case

with lighter feed composition.

Feed/ bottom heat exchanger is provided for feed preheating & heat

recovery from the bottom stream. DIP column feed is controlled by flow

control valve cascaded with existing stripper bottom level controller. In

case of DIP section outage due to any eventuality, stripper level can

still be controlled by existing flow control valve. A soft selector switch is

provided for this purpose.

DIP column top pressure is controlled by pressure control valve, located

at column over headline. A hot vapour bypass differential pressure

control valve is also provided for maintaining reflux drum pressure.

Flare control valve on reflux drum is given for removal of non-

condensable during any upset condition.

Isopentane in the feed stream is separated & collected at column top

and is routed directly to the existing MS pool. Online analyser is

provided at overhead line to monitor slippage of n-pentane in the

overhead stream & accordingly product draw is maintained by flow

control valve. Overhead product can also be drawn based on 6th tray

temperature of DIP. A soft selector switch is provided for selection of

the best control system.

Isopentane in column bottom stream is minimized by maintaining 79th

tray temperature. Accordingly, temperature controller controls amount

of steam flow to the reboiler by flow control valve. Column bottom

stream is routed to the existing ISOM feed surge drum via flow control

valve cascaded with column level controller.

Emergency Interlock Description

DIP Column over pressurization (IS-9301): In order to protect DIP

column from over pressurization, shut down valve is provided in

reboiler steam line, which will get activated by column top pressure

“High High”. A reset button is provided for this interlock.


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DIP Column level very low(IS-9302): In case of level ”Low Low” in

column bottom, in order to protect bottom pump from loss of suction,

interlock will activate and trip the running pump motor.

Reflux drum level very low (IS-9401): In case of level ”Low Low” in

reflux drum, in order to protect overhead pump from loss of suction,

interlock will activate and trip the running pump motor.

DIP Column bottom shut down valve (IS9303): A remote operated fire

shut down valve is provided at DIP column bottom for protection during

fire, which can be activated from field near shut down valve or 15

meter away from the valve or control room during emergencies.

Closure of this valve will result in tripping of running bottom pump.

Reset button has been provided only at field near shutdown valve. Full

opening of the shut down valve will be the start permissive for both

bottom pumps.

Reflux drum bottom shut down valve (IS9402): A remote operated fire

shut down valve is provided at DIP column reflux drum bottom for

protection during fire, which can be activated from field near shut down

valve or 15 meter away from the valve or control room during

emergencies. Closure of this valve will result in tripping of running

overhead pump. Reset button has been provided only at field near shut

down valve. Full opening of the shutdown valve will be the start

permissive for both overhead pumps.

New indeSelectG Unit

The indeSelectG Unit shall process gasoline from INDMAX unit as well

as the distillate of the new DCU CG splitter. The objective of the unit is

basically to saturate the dioefins present in the feed gasoline as well as

the shifting of lower molecular weight sulphur to higher molecular

weight sulphur compounds so that the sulphur content in the top cut

from the three cut splitter of the indeSelectG unit is reduced so that it

can be sent directly to the MS pool meeting BS-VI sulphur

specifications.


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IOC R&D and EIL have jointly developed this hydrogenation technology

based on indigenously available catalyst.

PROCESS DESCRIPTION

Facilities provided in the unit battery limit are:

Feed Section

- Reactor Section

- Separator Drum and Recycle gas Compressor section

- Stripper section

- Splitter Section

Feed Section

INDMAX full range naphtha from INDMAX Naphtha stablizer is routed to

this unit and light cut (LCN) from DCU CG Splitter unit is blended to

INDMAX full range naphtha.

The combined feed is routed to the Feed Surge drum through a

Cartridge filter to remove any carry over rust and polymeric components

in feed followed by feed coalescer for water removal. The pressure in

the feed surge drum is maintained by nitrogen blanketing. The feed

from the surge drum is pumped using pump to the reactor feed

preheater after mixing with recycle gas containing hydrogen on flow

control located upstream of the reactor feed preheater. Also facility for

injecting sulfiding agent for catalyst sulfiding during startup is provided

at the pump suction.

Reactor section

The reactor feed (including recycle and makeup gas) is preheated using

reactor effluent in feed reactor effluent exchanger after then feed is

brought to reactor temperature in the reactor feed preheater. The

reactor inlet temperature is controlled by HP steam flow rate. HP steam

desuperheater is provided to remove superheat of HP steam.


C2 - 13


The feed is then routed to the 2 bed SDS reactor from the top

(downflow) with cold quenches to limit the temperature increase inside

the reactor. Cold quenches are injected at the inter bed section under

flow control.

The effluent from the reactor is routed to the separator drum by reactor

product air cooler followed by reactor product cooler.

Separator Drum and Compressor Section

The reactor effluent is cooled progressively in a series of exchangers

before finally routing to the Separator drum. The separator is designed

for 3 phase separation of gas, hydrocarbon liquid and free water. The

vapour phase is compressed in the Recycle Gas compressor and routed

to the feed line as recycle and as reactor quench.

The Recycle Gas from the Separator drum is compressed in the Recycle

Gas Compressor. This is a reciprocating machine. The combined recycle

Gas and makeup gas is routed as cold quench gas to the reactor. The

recycle gas provides the partial pressure required in the reactor.

Stripper Section

The liquid hydrocarbon from the Separator drum is routed to the

Stripper through a Stripper bottom/feed exchanger. In the stripper,

reactor products are stripped off hydrogen using MP steam. MP steam is

injected on flow control to Stripper.

MP steam used in stripper reboiler comes from MP steam

desuperheater. In MP steam, desuperheater superheat of MP steam is

removed.

The stripper overhead vapours are condensed in the Stripper overhead

condenser. The stripper condenser minimizes losses of C3, C4 and C5

products to the fuel gas system. The trim condenser outlet is routed to

Striper Reflux drum. The hydrogen rich fuel gas from the Reflux drum is

routed to the fuel gas header. The condensed overhead liquid is refluxed


C2 - 14


back to the stripper on flow control cascaded with level in the Stripper

Reflux Drum.

The bottom product from the stripper is pumped to the INDMAX 3 cut

splitter after splitter feed cooler.

Splitter Section

The 3 cut splitter is existing column in INDMAX unit. Bottom product

from stripper is routed to existing 3 cut splitter. In the 3 cut splitter,

Naphtha is separated in three cuts light cut (C5-65oC), Middle Cut (65-

90oc) and heavy cut (> 90 oC).

The overhead vapor is totally condensed in 3 cut splitter overhead Air

cooler and 3 cut splitter trim cooler before entering the 3 cut splitter

reflux drum. Part of the condensed liquid is withdrawn as overhead

product (light cut) and the balance is refluxed back to the column using

reflux pumps.

The light cut withdrawn from column overhead is sent to MS pool. Total

Sulfur in light cut is maintained 30 ppmw max. At reflux drum, nitrogen

line and outlet line to flare is provided to maintain the column pressure.

The reboiling heat to the column is provided by MP steam through

thermosyphon reboiler.

The middle cut is withdrawn on level control by heart cut pumps and

cooled by heart cut cooler and routed to ISOM.

The bottom product, heavy naphtha is withdrawn on level control with

the help of Heavy Naphtha pumps and cooled by cooling water in heavy

gasoline cooler and routed to INDAdeptG unit.


C2 - 15


2.6 FLARE SYSTEM

Guwahati Refinery is presently having Hydrocarbon flare system and

Acid / Sour flare system. The existing hydrocarbon flare system is

handling hydrocarbon relief loads from Crude Distillation Unit (CDU) &

Naphtha Splitter Facility (NSF), Delayed Coker Unit (DCU) & LPG

Recovery Unit (LRU), INDMAX Unit, Hydrotreater Unit (HDT), Hydrogen

Unit (HGU), MSQ Block (NHDT, ISOM, NSU), Hydrogen Bullets and LPG

Bullets (Offsite).

Acid gas flare is handling gases from Sulphur Block. Acid gas flare

header from Sulphur Block joins the OSBL sour flare KOD. The sour

flare header (riser) from the KOD is supported by the common stack

structure and is having only fluidic seal. The acid gas riser after fluidic

seal joins the main hydrocarbon flare tip near flame zone.

The existing flare system will take care of relief load in BS-VI scenario

and no change in existing flare system is envisaged.

2.7 CATALYST SUMMARY

There is no additional catalyst requirement in ISOM revamp as only DIP

section is added which is non-catalytic. MS Blender package doesn’t use

any catalyst. IndaDeptG unit is under hold for revamp and is not

expected to use additional catalyst and chemicals after revamp as there

is no proposed capacity increase after revamp.

2.8 PRODUCT PATTERN

The existing Product Pattern of Guwahati Refinery is as under:

1. LPG

2. MS 3. Reformate Naphtha to Digboi Refinery

4. Pipeline Compatible Kerosene (PCK) 5. Aviation Turbine Fuel (ATF)

6. HSD 7. Sulphur

8. RPC


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As BS-VI project is pertaining to MS and HSD quality improvement,

details of intermediate streams and technical specifications are provided pertaining to these only:

MS Pool under BS-VI Scenario

HSD Pool under BS-VI Scenario

2.9 OFFSITE AND ASSOCIATED FACILITIES

Auxiliary facilities/utilities are the common requirements that are

necessary for the operation of the proposed project. The main utilities

include storage, water, cooling tower, boiler feed water and effluent

treatment plant. The main auxiliary facilities/utilities are discussed

below. The existing infrastructure of the refinery will be utilised for

meeting all such requirements.


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2.9.1 Storage and Mode of Transport of Products

Existing storage facilities will cater the storage requirement of the finished and intermediate products and no additional storage facility is

envisaged under BS-VI Project.

Road, pipeline and railways are the existing modes of product dispatch. MS, SKO and HSD are transported via pipeline which

constitutes 85% of the total volume of product. Rest 15% volume of the products, which comprise of LPG, Naphtha, ATF, RPC and Sulphur

is transported via Road. Naphtha is also dispatched via railways.

2.9.2 Water

The water for the proposed project will be required mainly as cooling

water and DM water requirement. Cooling water requirement shall be

met from existing Cooling water facility of the refinery. DM water

requirement shall be met from the existing DM Water treatment plant

at TPS.

Cooling water circuit will be in closed loop and there will be no

disposal in open. Only make up water shall be required to top up the

blow down & evaporation losses in cooling tower.

The makeup water requirement of the entire refinery pre-BS VI

project is around 428 m3/hr., which is fulfilled by 225 m3/hr. fresh

water and 203 m3/hr. recycled ETP treated water. After the

implementation of the BS VI project, the make up water requirement

of the entire refinery will be around 438 m3/hr., which will be fulfilled

by 225 m3/hr. fresh water and213 m3/hr. recycled ETP treated

water.Hence, there will be no additional fresh water requirement after

the implementation of BS VI project. The fresh water requirement of

the refinery is met by Brahmaputra River.

Raw water from Brahmaputra river is pumped into the Clarifloculators

of Water Treatment Plant (WTP) where alum treatment is carried out

for removal of suspended solids. Clarified water from the

clarifloculators is stored in Industrial reservoir from where the same is

supplied to the Refinery. WTP of Guwahati Refinery is located on top

of the hill south of Refinery’s housing colony, Sector-1 and is about 3


C2 - 18


km from the Refinery. The plant was installed for supplying

industrial water to the Refinery, drinking water for the Refinery

Township and some other nearby establishments. The Water system

for the refinery is shown as Figure-2.4. The indicative water balance

diagrams of bothpre & post BS-VIproject are presented in Figures-

2.5A& 2.5B respectively.

2.9.3 Power & Steam

The power requirement at the existing refinery operation is around 15 MW, which is sourced from the existing facilities of the refinery. For BS-VI project, around 5 MW additional power will be required. So, the total power requirement after the implementation of BS-VI project is estimated as around 20 MW, which is proposed to be met by existing facilities. The existing steam requirement is around 105-107 MT/hr. Post BS-VI implementation, steam demand is worked out to 132 MT/hr.The existing facilities are found adequate for meeting BS-VI steam demand.

2.9.4 Service Water

Service water requirement shall be met from existing service water

facility of the refinery.

2.9.5 Types and Quantum of Wastewater

The waste water, to be generated from the operation of the proposed

BS-VI project will be mainly cooling tower blow down and DM plant

waste water. The existing cooling tower and the existing DM plant

shall be used for meeting the cooling and the DM water requirement

for the proposed project. Hence, all such future requirement shall be

integrated to all the available infrastructure of the existing refinery.

The waste water generation pre BS VI project scenario of the refinery

is around 245 m3/hr.,out of which around 209 m3/hr. (203 m3/hr. as

make up water and 6 m3/hr. as horticulture and other miscellaneous

purpose) is reused after undergoing proper treatment in the Effluent

Treatment Plant of the refinery. Around 20 m3/hr. is discharged

through storm water channel. Around 5 m3/hr. DM plant reject/ boiler


C2 - 19


blow down water is used for TPS auxiliaries. The balance 11 m3/hr. is

discharged into Brahmaputra River after ETP.

After the implementation of BS VI project, the waste water generation

of the refinery will be around 255 m3/hr., out of which around 219

m3/hr. (213 m3/hr. as make up water and 6 m3/hr. as horticulture and

other miscellaneous purpose) will be reused after undergoing proper

treatment in the existing Effluent Treatment Plant of the refinery.

Around 5 m3/hr. DM plant reject/ boiler blow down water will be used

for TPS auxiliaries.Around 20 m3/hr. will be discharged through storm

water channel. The balance 11 m3/hr. will be discharged into

Brahmaputra River after ETP.

After the implementation of BS-VI project, the additional waste water

generation of the refinery will be around 10 m3/hr., which will be

reused after undergoing proper treatment in the existing Effluent

Treatment Plant of the refinery. Hence, there will be no additional

treated effluent discharge after BS VI project.

2.10 WASTE WATER MANAGEMENT

There are a number of sources where liquid effluents get generated at

the refinery which ultimately are routed to the effluent treatment

plant (ETP) for treatment. The principal wastewater streams are oily

effluents, chemical effluents, storm water and sanitary wastewater

from the refinery.

2.10.1 Effluent Treatment Facilities

Guwahati Refinery has developed a Modernised effluent treatment

plant (ETP) for treatment of process wastewater, generated from

various units of the refinery as well as Township.

The treatment scheme is broadly divided into five sections as follows:

(A) Physico-Chemical treatment, for removal of Hydrocarbons,

Sulphides and Total suspended solids.


C2 - 20


(B) Biological treatment system incorporating activated sludge

system for oxidizing the organic matters.

(C) Tertiary treatment system comprising of pressure sand filters

and activated carbon filters for removal of TSS, Odour, Colour

and Phenol.

(D) Sludge processing section comprising of Oily & Chemical Sludge

Processing and disposal as a solid waste biodegradable material.

(E) Chemical dosing system comprising of storage facilities of

various chemicals and preparations of chemical solutions of

standard concentration for injection at various stages during

effluent treatment.

The design capacity of the Effluent Treatment Plant is:

- Wet Weather Flow (WWF): 550 m3/hr

- Dry Weather Flow (DWF): 365 m3/hr

The Block Flow Diagram of Effluent Treatment Plant is shown as

Figure-2.6.

Process Description

The effluent from various units / Sections of the refinery is routed to

the API II & III Parallel Separators, where the oil is separated and

directed to the DH tanks 1 & 2 by electric driven pumps and Steam

Driven Pumps. The treated effluent from the API separator is routed

to the Aeration Basin and it is received in the sump pit. With the help

of Effluent Transfer Pumps, the effluent is delivered to the

equalization tanks.

API Separator II & III consists of three parallel segments in each of

which there are oil skimmers at the inlet and out let end of the

separator. In each of the segments, there is also provided a scrapper


C2 - 21


mechanism operated by electrically driven gearbox system. The main

function of scrapper is to push the oil from the surface of water

towards the oil skimmer, located at the Outlet end and to scrap out

suspended solids settled at the segments bottom floor of the

separator, towards the sludge pit located at the Inlet end. The Sludge,

accumulated at the sludge pit of each segment is periodically

transferred to adjoining Lagoons with the help of Pump.In the

Lagoons 1 & 2, the sludge settles at the bottom allowing water to be

drained out into the API separators. The floating oil from the top of

the lagoon is transferred to DH Tank 1&2 from time to time with the

steam driven pumps and electric driven pumps.

API Separator II consists of three parallel segments with respective

gear box system and API Separator III also consists of three parallel

segments with respective gear box system.

The equalization tanks have been provided with floating oil skimmers

and multiple draw off points for removal of free oil, separated at the

top of the water surface. MP Steam spraying facility is provided to

maintain the mobility of oil. The effluent from the Equalization tanks is

either pumped or flows through gravity to Tilted Plate Interceptor

(TPI). Spent caustic injection facility is provided at the inlet launder of

TPI for processing the spent caustic &adjustingpH. Each TPI consists

of tilted plate in six compartments kept inclined at 45o. When the

oily effluent passes through the tilted plates, the free oil floats at the

top and the heavier suspended particles settle down. The floating free

oil is recovered with the help of Pipe oil skimmer and is diverted to

slop oil sump. From the slop oil sump, the oil is pumped to the DH

Tank. The bottom product is drained out and routed to Oily &

Chemical Sludge Sump. An over flow weir is provided at the flow

channel of TPI Unit so that the water level is maintained in the TPI for

the effective separation of free oil and sludge. The treated water over

flows through the weir and routed to the DAF unit for emulsified oil

removal.


C2 - 22


Emulsified Oil and Suspended Solid Removal Section

The DAF System removes emulsified Oil and Suspended solids. DAF

system consists of flash mixer, Flocculator and a floatation unit. At

flash mixer PAC, is added .The over flow from flash mixer enters into

the flocculator tank where de-oiling polyelectrolyte is dosed for

breaking of oil water emulsion. The flocculated effluents that contain

the flocculated solids and dispersed oil enter the DAF Unit. At the DAF

unit, the water is saturated with air in the saturation vessel and it is

directed to the DAF tank. When the water saturated with air enters

the DAF tank, it rises up to form microscopic air bubbles and these

bubbles carry the emulsified oil to the top and the solids settle at the

bottom. A Froth Skimmer skims off the floating oil and the solids at

the bottom are scrapped by rake and drained to oily and chemical

sludge sump.

Biological Treatment System

The oil free effluent from DAF, Filter Backwash Water, Sanitary waste

from refinery and Township enter aeration tank by gravity for removal

of biological pollutants. Extended aeration of activated sludge takes

place in Aeration Tank. The activated sludge process removes BOD

along with corresponding COD, Sulphide, Phenol and ammonia from

effluent and the sanitary waste. The oxygen required for survival of

microorganism is obtained from the Blowers via diffused aeration

system. In order to provide food to the microorganisms, nutrients are

dosed. The effluent overflowing from the aeration tank flows into the

final clarifier for sludge settling. The bio-sludge, which settles is

recirculated back to the aeration tank by Bio-sludge recirculation

Pumps for maintaining the desired Mixed Liquor Suspended Solids

(MLSS) and the clarifier over flow is directed to Guard Pond. From the

Guard Pond, the treated water flows by gravity to Filter feed Sump.

Vertical Pumps, provided at the sump are used for pumping the

effluent to the Polishing Section.

Polishing Section

Polishing section consists of five numbers of Pressure Sand Filters and

five numbers of Activated Carbon Filters, which are operated by

Programmable Logical Control (PLC). Pressure Sand filters consist of


C2 - 23


Sand media, which remove the suspended particles, and Activated

carbon filters remove the odour, colour and organics. All ACF and PSF

can be run either in auto mode or semi auto mode or manual mode,

as required. ACF and PSF are run in four cyclic positions:

Position I - Ready for Service.

Position II - In the Service.

Position III - Ready for Backwash

Position IV - In the Backwash.

The above all four positions take place in various situations. But each

of the above positions comes once in each filter within a cycle of every

22 hrs.under normal circumstances. The effluent that is treated &

made free of pollutants meeting the MINAS is reused inside the

Refinery in Cooling Towers and fire water after getting disinfected

through chlorination and a negligible quantity is discharged into

Brahmaputra river.

2.10.2 REUSE AND DISPOSAL OF TREATED WASTEWATER

At present, the wastewater, generated in the entire refinery is treated

in the existing ETP of the refinery. The waste water, to be generated

during the operation of the proposed BS-VI project will undergo the

necessary treatment in the existing Effluent Treatment Plant of the

refinery. As elaborated in section 2.5.4, the waste water generation

after the implementation of the proposed project will increase

marginally.

To preserve the natural resources by reduction of fresh water

consumption in the Refinery, the major portion of the treated effluent

is reused in cooling tower make up and fire water make up in the

refinery. This has resulted in reduction of effluent discharge to the

river as well as reduction in fresh water consumption.

At present, around 95% of the treated effluent is reused in the

refinery and the balance amount (around 5%) is discharged into River


C2 - 24


Brahmaputra (near Saraighat Bridge at the downstream of Guwahati

city) through a 26 km. long underground pipeline.

The same practice shall continue after the implementation of the

proposed BS-VI project. The quantity of the treated wastewater

discharge will remain same.

2.10.3 Compliance with Standards

The ETP has been designed to meet MINAS stipulation. A comparison

of MINAS and the treated effluent quality showed that the treated

effluent standard is well within MINAS regulations both qualitatively

and quantitatively. After the commissioning of the proposed BS-VI

project, the treated effluent will meet MINAS both qualitatively and

quantitatively.

The existing characteristics of the treated effluent before discharge are presented in the table below:

2.11 AIR EMISSIONS

There will be no additional stack after the implementation of the proposed project. Air emission of the refinery shall remain at the

existing level.

2.12 SOLID WASTE GENERATION

The oily sludge generation from the existing operation of Guwahati

Refinery in the year 2017-18 was 1754 MT, out of which 1692 MT was

already bio-remediated. 9.995 MT Spent Catalyst was generated

during the same period.

PARAMETERS PERMISSIBLE LIMIT (mg/l)

Actual Value (mg/l)

Oil & Grease 5 3.19

BOD 15 10.76

COD 125 85.87

TSS 20 13.28

Phenols 0.35 0.29

Sulphides 0.5 0.03


C2 - 25


As per standard practice, spent catalyst from process units in the

existing refinery operation is collected and stored in sealed drums for

auction. After auction, the successful party collects the safely stored

spent catalyst from Guwahati Refinery for treatment at their end. The

same practice will be followed after BS-VI project.

There will be no regular generation of spent catalyst as solid waste.

The spent catalyst after its End of Life (EOL) will be safely secured in sealed container for auction. After auction, the successful party will

collect the safely stored spent catalyst from Guwahati Refinery for treatment at their end. There will be no environmental hazard at

Guwahati Refinery due to solid waste generation in the form of spent

catalyst.

2.13 LAND

The proposed project shall be installed on the available land within the

existing plant boundary of the refinery.

2.14 MANPOWER REQUIREMENT

16 additional manpower will be required in the refinery after the

implementation of the proposed BS VI project.

2.15 PROJECT COST

The total cost of the BS VI project will be around Rs. 513 crores.

2.16 PROJECT COMMISSIONING

The Project is envisaged to be commissioned by September, 2019 to

put BS-VI compliant MS and HSD in the market from 1st April, 2020.

FIGURE-2.1 : LAYOUT PLAN

INPUT/OUTPUT

Qty, MT % WT

A. INPUT

Crude intake 1019034 100.0 2094 2133.9

Total Intake 1019034 100.0

B. OUTPUT

1. Finished products : LPG 45031 4.4 80 3.6

SRN 29450 2.9 150 4.4

MRN 1509 0.1 1250 1.9

MS BS-III 122708 12.0 140 17.2

Less LN import 0 0.0 0 0.0

Less Mktg.MS ex-BR/BGR -4921 -0.5 -140 0.7

Less Reformate_JR blended in MS -47440 -4.7 -25 1.2

Less Reformate_MR blended in MS 0 0.0 -25 0.0

Less Reformate_BR blended in MS 0 0.0 0 0.0

Less NRS_PR blended in MS -4664 -0.5 -30 0.1

Less Reformate_AOD blended in MS -3258 -0.3 -30 0.1

Total light distillate 138414 13.6 29.2

ATF 47037 4.6 150 7.1

SKO 58809 5.8 500 29.4

HSD-BS-III 705341 69.2 330 232.8

LDO 5260 0.5 4500 23.7

Less SKO ex. BR -2741 -0.3 -300 0.8

Less SKO ex. JR -13579 -1.3 -200 2.7

Less SKO ex. PR -36886 -3.6 -200 7.4

Less SKO ex. BGR 0 0.0 -300 0.0

Less IND SKO ex. PR -55260 -5.4 -850 47.0

Less BRPL NAD 0 0.0 -1500 0.0

Total middle distillate 707981 69.5 350.8

CLO 747 0.1 7500 5.6

Sulphur 749 0.1 749.0

RPC 61151 6.0 12500 764.4

Total heavy ends 62647 6.1 1519.0

Total Finished products 909043 89.2 1899.0

2. ISD -9752 -1.0 5400 -52.7

3. Product Recovery : 899291 88.2 1846.3

4. Fuel : Own Fuel Oil 81825 8.0 4800 392.8

Gas 33832 3.3 145 4.9

Total fuel 115656 11.3 397.7

5. Loss : Liq. loss 2073 0.2 4800 10.0

Flare loss 2016 0.2 145 0.3

Total loss 4087 0.4 10.2

6. Fuel & Loss 119743 11.8 407.9

7. # Imports consuption: 0.0

Foots oil ex AOD 0 0.0 0.0

LVFO ex. AOD 0 0.0 0.0

LSHS ex- BRPL 0 0.0 0.0

Total Imports consumption. 0 0.0 0.0

Grand total 1019034 100.0

Crude 2134 MT

Import 60 MT

Total Input Sulfur 2194 MT

Total Product Sulfur 2194 MT

2013-14PPM of S MT of S

Sulfur Balance: Pre-INDAdeptG

FIGURE - 2.2A

INPUT/OUTPUT

Qty, MT % WT

A. INPUT

Crude intake

Assam 900000 75.0 2610 2349.0

Imported 300000 25.0 2520 756.0

Total Intake 1200000 100.0 3105.0

B. IMOPORTED STREAMS

Imported Reformate 61000 10 0.61

Kero Import 0

1261000 3105.6

B. OUTPUT

1. Finished products : LPG 57200 4.5 80 4.6

Naphtha 19500 1.5 50 1.0

BS-VI MS 164800 13.1 8 1.3

ATF 93800 7.4 117 11.0

BS-VI HSD 736000 58.4 8 5.9

Coke Product 0 0.0 10500 0.0

Coke to Pet Coke Boiler 52900 4.2 10500 555.5

Total Finished products 1124200 89.2 579.2

2. Fuel : Fuel Oil 39315 3.3 4000 157.3

Fuel Gas 91736 7.6 100 9.2

Total fuel 131051 10.4 166.4

3. Loss : Liq. loss 2400 0.2 4000 9.6

Flare loss 1200 0.1 8000 9.6

Total loss 3600 0.3 19.2

4. Fuel & Loss 128000 10.7 185.6

5. Sulphur ex SRU 2155

D.Grand total 1261006 100

Total Input Sulfur 3105.6 MT

Total Product Sulfur 3105.6 MT

C. TOTAL INPUT (A+B)

FIGURE - 2.2B

BS -VIPPM of S MT of S

Sulfur Balance: BS-VI Project Case

Kg/MT MT KWH/MT KWH

CDU 1200000 40 48538800 6.0 7200000

DCU 433111 200 86622192 50 21655548

INDAdeptG 36410 188 6826875 399 14513026

INDMAX 165600 240 39744000 188 31132800

HDT 800000 25.4 20320000 36.83 29463200

ISOM 54000 2500 135000000 140 7560000

NSF 182460 0 0 0 0

3 CUT 59179 180 10652291 30 1751710

H2U 38046 52 1986003 88.8 3378488

SRU 3383 4500 15223772 40 135322

IndeSelect 80000 312 24960000 70 5600000

OM&S 0 5 0 2000000

G/F 0 0 0 200 0

NRO 0 5 0 0 0

IMPORT 0 0 0 0 0

Pet Coke Boiler 13120000

SUB TOTAL 0 389873933 0 137510094

TPH 49 17188.8 17.2

Total Steam Consumption (Direct + Steam used for Power consumption) 121 TPH 72.2

Steam Generation

Steam ex-TPS

HPS, MT/h

(for power gen) 72.2

MPS, MT/H

(INCL TPS AUX & ex PRDS)47.6

LPS, MT/H (uncontrolled

extraction) 4.3

Total steam ex-TPS (HPS for

power gen +MPS) 124.2

FIGURE-2.3

UNIT T PUTSTEAM POWER

STEAM BALANCE FOR GUWAHATI REFINERY

Process Design Engineering Cell Process Design Engg Cell Job ID: 1715 RHQ-New Delhi Deisopentaniser Project

©Process Design Engineering Cell, RHQ, IOCL – All rights reserved

5.0

Process Flow Diagram

IND

IAN

OIL

CO

RP

OR

AT

ION

LIM

ITE

DP

RO

CE

SS

DE

SIG

N E

NG

G. C

EL

LR

HQ

, NE

W D

EL

HI, IN

DIA

.

All Data are in m3/hr (Basis: July'18) Figure 2.5A - Water balance of Guwahati Refinery (Pre- BS VI)

Service water 80 50

Loss

20 10 11

10.0 6.0

205 220

53 95%

110 109 15

238 98 Sanitary

Blowdown & Seal cooling water

87

209

Fresh water 30

225

Loss 20 10

428 5 Vent & Losses

203 Deaerator vent

ETP reuse 110 50

80 55 40 203 6

60 10Bootwater/Tan

k farm drainMakeup

Miscellan

eous

(horticult

ure)TG Condensate reuse Condensate gen

& reuse

20

Process units

Loss

10

5.0

Blowdow

n &

Losses 5

Loss of

condensate

Reject &

losses 5 20

to open channel

Sewage

OPEN CHANNEL Discharge thru storm water

channel

FR

ES

H W

AT

ER

TO

RE

FIN

ER

Y

Units/QC lab/Workshops/Projects

TPSCT

FIRE WATER

DM PLANT

REUSEUCT

NPCT

ConsumptioSteam gen

MA

KE

-UP

WA

TE

R T

O R

EF

INE

RY

ETP

TPSCT

FIRE WATER

DM PLANT

REUSE

DISCHARGE

UCT

NPCT

ConsumptioSteam gen

BLR/5/6/7

TPS auxiliaries*

Evaporatio

All Data are in m3/hr (Basis: July'18) Figure - 2.5B - Water balance of Guwahati Refinery (Post BS VI)

Service water 80 50

Loss

20 10 11

10.0 6.0

215 230

53 95%

110 119 15

248 104 Sanitary

Blowdown & Seal cooling water

91

219

Fresh water 30

225

Loss 20 10

438 5 Vent & Losses

213 Deaerator vent

ETP reuse 110 50

80 55 40 213 6

60 10

Bootwate

r/Tank

farm

drain

Makeup

Miscellan

eous

(horticult

ure)TG Condensate reuse Condensate gen

& reuse

20

Process units

Loss

10

5.0

Blowdow

n &

Losses 5

Loss of

condens

ate

Reject & losses 5 20

to open channel

Sewage

OPEN CHANNEL Discharge thru storm water

channel

FR

ES

H W

AT

ER

TO

RE

FIN

ER

Y

Units/QC lab/Workshops/Projects

TPSCT

FIRE WATER

DM PLANT

REUSEUCT

NPCT

ConsumSteam gen

MA

KE

-UP

WA

TE

R T

O R

EF

INE

RY

ETP

TPSCT

FIRE WATER

DM PLANT

REUSE

DISCHARGE

UCT

NPCT

ConsumSteam gen

BLR/5/6/7STG 3/4/5

TPS auxiliaries*

Evaporatio

ETP BLOCK FLOW DIAGRAM

Equl. Tanks

TPI Separator DAF section

Aeration Tank

Clarifier Final Guard ponds

PAC DOPE

Thickener & Centrifuge

ACF PSF

AIR

Aeration Basin & Sump

Sludge & Scum

Dry sludge cake

DWPE

Oil to reprocessing

Influent

River

Discharge

Reuse to CT, Coke

cutting, Fire water

API

FIGURE: 2.6


C3 - 1

3.0 Baseline Environmental Scenario Envirotech East Pvt. Ltd.

CHAPTER-3.0

BASELINE ENVIRONMENTAL SCENARIO

3.0 INTRODUCTION Guwahati Refinery inaugurated on 1st January 1962, is the first public

sector refinery in India owned by Indian Oil Corporation Limited and

is located among the picturesque surroundings near the Brahmaputra

River at Guwahati in the northeast part of India in Assam. The

refinery processes indigenously available crude of Assam and caters

to the requirements of the petroleum products of the region. Now,

Guwahti Refinery proposes to install BS-VI project in Guwahati,

District Kamrup in Assam. Its geo-graphical co-ordinates are latitudes

26˚10′51.27″N to 26˚11′20.01″N and longitudes 91˚48′11.38″E to

91˚48′57.08″E with above mean sea level (AMSL) around 300 ft.

The general topography of the area is flat surrounded by hilly regions

and the general elevation of the site is 220 ft AMSL. New Guwahati

Railway Station is about 2.0 km from the refinery site. National

Highway-17 is passing through the south direction, around 7.5 km

from the refinery. River Brahmaputra is passing approx. 2.5 km

distance in north direction w.r.t. the refinery. The nearest Airport is

Lokpriya Gopinath Bordoloi International Airport, Guwahati, which is

about 24 km. NE from the refinery boundary. The project site already

has proper road linkage for transport of materials and equipments.

The EIA is aimed at determining the environmental impacts on the

"Study Area", which encompasses all areas falling within a radius of

10 km around the plant site due to the proposed project.

Aamchung sanctuary is located within 10 km. radius area of the

project site. Apart from this, there are no other eco-sensitive areas

like National Parks/ Biosphere Reserves/ Migratory Corridors of wild

animals, Reserve Forest etc. within 10 km radius study area around

the Guwahati Refinery.

Location map indication the project site is presented in Figure-3.1.1.

The 10 km radius study area for the proposed project is presented is

Figure-3.1.2.


C3 - 2


The major environmental disciplines studied in this EIA report include

Soil, Land Use, Meteorology, Surface and Ground Water Quality, Air

Quality, Noise, Ecology and Demography, Socio-Economy and

Geological features & Geo-hydrological Status.

The following chapters present the detailed discussion on the field

data, generated for soil, meteorology, water quality, air quality, noise,

ecology and socio-economics during three months’ period (9th

December, 2016 – 8th March, 2017) representing winter season

along with the relevant secondary data, collected from various

agencies on the relevant disciplines.


C3 - 3


FIGURE-3.1.1: PROJECT SITE

Guwahati Refinery, Guwahati, District Kamrup, Assam


C3 - 4


FIGURE-3.1.2: 10 KM RADIUS STUDY AREA


C3 - 5


3.1 GEOLOGY & GEO-HYDROLOGY OF THE STUDY AREA

3.1.1 GEOLOGICAL FEATURES OF THE STUDY AREA

Geologically, the Guwahati city represents a Precambrian terrain

that is an extension of the Shillong plateau. Physiographically the

area can be divided into three units-

• The hilly region in the south

• The alluvial plains in central part and

• The western parts and the swamps along Brahmaputra flood

plains

Geologically, the city is made up of the Precambrian gneissic

complex, which is, directly overlain by Pleistocene-Holocene

sediments. The hills are made up of the gneisses and granite

bodies with quartzites, amphibolites and biotite schists; with the

intermontane valleys are filled with Pleistocene-Holocene

sediments. The rocks are affected by two dominant sets of joints,

intruded by quartz veins, aplite and pegmatite.

The Shillong Group of rocks occurs as in selbergs in alluvium and

hill ranges in southern boundary of the district with Meghalaya.

These rocks occupy about 1500 sq. km, area south out of

Brahmaputra river and 100 sq.km (ten percent) in north bank.

They constitute mainly of schists and gneisses of varied nature and

composition. Migmatites, basic rocks, granites and veins of

different composition are embedded in these schists and gneisses.

The basement is overlain by a cover of Quaternary deposits of

variable thickness composed of unconsolidated sand, silt and clay.

Along many tracts occupied by paleo channels, the typical

Brahmaputra sand with abundant biotite and mostly silt are

encountered. Thin layers of residual clays, which are the weathered

product of feldspar, are found intertwined with the alluvium at

places.

3.1.2 SUB SURFACE GEOLOGY

The lithological logs of boreholes drilled by Central Ground Water

Board, Directorate of Geology and Mining, Assam State Minor

Irrigation Department, Public Health Department and Private


C3 - 6


Sectors show that granular zones start right from surface to 250

m.b.g.l in the north bank of river Brahmaputra.

The alluvium comprise mainly of sand, gravel and boulders with

intercalations of thin beds of clay. The coarseness of aquifer

material increases towards north and ultimately becomes bouldery

in the foothills of the Himalayan range. A thin cover of

discontinuous clay beds occur at surface allover the alluvial deposit

ranging in thickness of 5 to 10 m.

Sub-surface geology differs near inselbergs where piedmont

formation of good thickness serves as aquifer. In the southern bank

of river Brahmaputra the sub-surface geology is of non-uniform

nature in lateral as well as vertical extensions. The area dominated

by alluvium is composed of sand, sandy clay, pebbles and gravels.

In the piedmont formation coarse sand and pebbles act as aquifer.

3.1.3 GEOMORPHOLOGY OF THE PROJECT AREA

Geomorphologically, Guwahati city is located in an area, where the

Shillong Plateau and the Floodplains of the Brahmaputra confront

each other. Landforms within the city are therefore unique with

dissected hills (originally part of the Shillong Plateau), plain areas

and natural lakes (the beels), swamps and the mighty river

Brahmaputra. Precambrian residual hills dotting all around

interspersed with elongated low-lying plains. Broadly, the area is

categorized into three geomorphic units:-

i) The denudo structural hills (residual hills), ii) The alluvial plains

and iii) The marshy lands including the static water bodies (Water

bodies with paleochannels) have iv) been identified from satellite

images and topomaps.

A unique feature of the landscape of Guwahati is the presence of

numerous partially silted water bodies locally known as beels, the

largest of which is the Deepar Beel, a Ramsar Convention list

wetland of international importance presently covering about 5.7

sq. km. in the western fringe of the city, the only large water

reserve of Guwahati. Other water bodies/wetlands within the city

are Soru Sola Beel and Bor Sola Beel. Most of the earlier water

bodies however, have been converted into built up land during last

couple of decades.


C3 - 7


The main city is situated on the southern banks of the

Brahmaputra. At places the width of the river is 6 to 8 km, while its

narrowest portion (1.8 km) is in the location of the famous bridge

of Saraighat. Apart from the Brahmaputra towards northern

extremity, two other rivers viz., the Basistha and Bharalu form the

main drainage within the city. Water bodies along with

paleochannels occupy only 7.82% of the total area, while the

alluvial plain occupies 31.51% and residual hills occupy 68.49% of

the total study area (Table 3; Fig. 2 and 3).

There are many permanent and temporary islands and beaches in

the river. Umananda a permanent island situated close to the

proposed site provides a unique picturesque environment. The

project site is located over this island.

There are several hills of different sizes and shapes. The hills in the

northern areas (Nilachal or Kamakhya Hill in the north-west,

Chitrasala or Kharghuli Hill in the north) close to the bank of

Brahmaputra, south-central areas (Narakasur Hill, Kalapahar and

Fatasil Hill) and eastern areas (Narengi, Hengerabari, etc). Many of

these hills such as the Nilachal, Chitrachal, Narakasur, etc. are

famous of their legendary, religious and historic importance.

3.1.4 GEO-HYDROLOGICAL STATUS OF THE STUDY AREA

Hydrogeological studies revealed the presence of groundwater just

under water table conditions in case of shallow aquifers; however,

in case of deeper aquifers it is available within the semi-confined to

confined conditions. In the loose unconsolidated formations depth

to water in the open dug wells ranges from 2 to 4 meters below

ground level during pre-monsoon period. Dug wells located in the

foothills zone however show deeper groundwater level ranging

between 5 to 10 meters below ground level during pre-monsoon

period. Shallow tube wells constructed in the loose formation down

to 30 meters by Public Health Engineering Department yield around

2000 to 3000 litres per hour and the well yield shows consistent

behaviour throughout the year. Normal dug wells constructed in

the pediment formation covering the valley parts of the city down

to maximum depth of 15 meters store good quantity of water

irrespective of seasonal change and can be pumped at the rate of

10 cu.m/day. However, normal dug wells constructed in the


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weathered formation of the hill areas down to maximum depth of

25 meters having water level around 5 to 7 meters during monsoon

period and more than 10 meters during lean period show erratic

behaviour of storage depending upon the structural pattern of the

country rock and seasonal rainfall. Deep tube wells constructed in

the valley portion down to maximum depth of 200 meters in the

western parts of the city show very good discharge of about 70 to

100 cu.m/hr. for nominal drawdown. In the central part of the city,

deep tube wells down to maximum depth of 100 meters give yield

upto 80 cu.m/hr. In the eastern and southern parts of the city near

to hillocks, the discharge of deep tube wells down to maximum

depth of 80 meters give yield upto 30 cu.m/hr for considerable

drawdown. The hard rocks found in the hillocks also are potential

sites for construction of bore wells. However, it depends totally on

degree of structural weakness formed due to tectonic events that

would have occurred in the ancient periods. Bore wells constructed

down to maximum depth of 200 meters in the hard rocks have

been found to be effective for ground water development.

Fractures, fissures, joints developed during tectonic events acts as

good water repository in these hard rocks. Maximum yield of such

wells at particularly in the Beltola and Odalbakra areas reveal that

water can be drawn at the rate of 80 cu.m/hr for six to eight hours

daily (Devi, 1998 ; Konwar, 2004).

3.1.5 CLIMATE AND RAINFALL

The climate of this region, like other parts of the Brahmaputra

valley, is tropical. It experiences a typical monsoonal climate

somewhat modified by some other factors like orography, the

periodic western disturbances, the local mountain and valley winds,

the predominance of maritime tropical air masses, etc. In general,

the climate of this region is characterized by a cool and foggy

winter with 17°C mean daily temperature - a temperately hot but

humid summer with 27°C mean daily temperature and, the

monsoon or rainy season with a mean maximum daily temperature

of 38°C. The monsoonal season receives the heaviest rainfall in the

month of July and is the rainiest month with an average rainfall of

300 mm Due to certain local phenomena besides the prevalence of

mountain and valley winds in this part, the temperature is

moderate but sultry. Thunderstorm, dust raising wind, prevalence

of fog are some of the local climatic phenomena of this region.


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The above noted climatic condition has a significant bearing on the

land-use pattern of the region. Due to heavy rainfall, the low lying

areas are occupied by marshy vegetation. The southern highlands

of the areas are covered by thick forests. The agriculture here is

highly dependent on rainfall pattern. The rainfall and other climatic

factors rather influence and control the types and patterns of crops.

3.1.6 SEISMIC HISTORY OF THE AREA

Assam is among the most seismically active parts of India.

Geomorphologically, northeast India is located in an earthquake

prone zone (zone V) of the Indian subcontinent. In this region

earthquakes come with landslides, floods along with series of

earthquakes of smaller magnitude. Here earthquakes of up to MM

intensity IX can be expected. According to a hazard map by the

Global Seismic Hazard Assessment Program, the state can expect

to have a peak gravitational acceleration (PGA) of 0.24g to 0.48g.

FIGURE 3.1.3: EARTHQUAKE HAZARD MAP OF ASSAM


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3.2 MAJOR INDUSTRIES IN 10 KM RADIUS AREA AROUND THE PROJECT SITE

There are some pharmaceutical, chemical, food processing, cement

industries, etc. operating in 10 km radius area around the Guwahati

Refinery. The names of the major industries are given below:

Sl.

No.

Name of Industry

1 Tata Chemicals Ltd.

2 Oil India Ltd.

3 River Valley Cement Corporation Manufacturing

of Kamdhenu Cement

4 Brahmaputra Industrial Park

5 Ma Kamakhya Coke Industry

6 Ozone Pharmaceuticals Ltd.

7 Maheswari Industries

8 Sai Packaging Industries

9 Unilever

10 AB Chemicals

11 India Carbon Ltd.

12 North East Powerline Industries


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3.3 LAND USE

3.3.1 INTRODUCTION The project area and about 10 Kilometer radius of the project site

encompassing a total area of 31452.87 ha comes in the vicinity of the

Noonmati area, under Guwahati P.S in Assam. The study area also

includes a buffer zone, namely, the area within 10 KM radius of the

plant. Brahmaputra river, the only major river flows from east to west

in the northern part of the study area. The river has significant

contribution in regenerating livelihood of the people living on its two

banks through various economic activities like fishing, transport of

goods, making bricks etc. Series of hills are present in the eastern as

well as northern and southern boundaries of the proposed site.

Periphery of most of the hills are occupied by settlement in the

surrounding area of the project site.

3.3.2 LAND USE BASED ON SATELLITE IMAGERY

Data base The standard true colour composite of Google map on the scale of

1: 50000 are used for Image interpretation and preparation of

landuse map. In addition to that other ancillary data such as

municipal map of surrounding the project area are consulted for the

said work.

The entire work was carried out using the manifold advantages of

remote sensing technique along with GIS for bringing data and

analysis from different sources under a common platform. Extensive

fieldtrip was made at the study area. The outcomes from remote

sensing data analysis, observations at the field level and inferences

with respect to the landuse of the study area are reported here.

Methodology & Work Done

Remote sensing data has been used in inventorying, mapping,

monitoring and recently for the management and development

planning of the sustainable utilization of natural resources. Due to

its repetitive, multi-spectral and synoptic nature, RS data has

proved to be extremely useful in providing information on various

components of the natural resource management. Using

multispectral satellite data, the land use / cover area are mapped


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on 1:30,000 scale for creating baseline information. The basic data

constitutes the basic visible band. The high resolution satellite

images from Google and USGS are adequate for visual

interpretation.

Detail land use / land cover of the area surrounding the project site

was made using a classification system, normally being followed for

such kind of work. A preliminary interpreted map was prepared

through visual image interpretation technique of remote sensing

image using standard Imagine interpretation software of recent

version. Survey of India topographic sheet was utilized for getting

the historical data of the project site. This map was taken to field for

field verification. Detail ground truth collection was made using

sophisticated handheld GPS of Trimble make, USA. Data was

collected in standalone mode. Since, the project layout plan did not

have any latitude-longitude, it was not possible to geo-reference

that. As a result, the GPS was used in tracking mode to collect the

boundary of the project site, which was directly superimposed on

the geo-referenced image.

The methodology is essentially based on on-screen image

interpretation keys like tone, texture, size, pattern, association etc.

In the on –screen interpretation the imagery is displayed onto a

computer screen normally as FCC and intended classes are

delineated based on image interpretation elements as well as from

ancillary data also. To delineate specific classes, other band

combination has also been used where the signature of particular

classes is quite evident. In this particular case true colour composite

from Google image has been utilized to interpret the different

landuse units. Ultimately after analysis of image, landuse map of

the said area is prepared and final layout is prepared in Arc Map

version 9.3. The methodology of image analysis has been described

below:

Interpretation Techniques

Remote Sensing is the art, science and technology of obtaining

reliable information about physical objects and the environment,

through the process of recording, measuring and interpreting imagery

and digital representation of energy patterns derived from non-contact

sensor system. Image interpretation is defined as "the art of

examining images for the purpose of identifying objects or surface


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features and judging their significance. Interpreters study remotely

sensed data and attempt through logical processes in detecting

identifying, classifying, measuring and evaluating the significance of

physical and cultural objects, their patterns and spatial relationships”.

Image in Interpretation of remotely sensed data can be attempted

either by visual or digital techniques of analysis. The purpose of

applying either of the above two techniques is for feature identification

and classification.

Aspects of Image Interpretation

Image interpretation is a complex process of physical, psychological

activities occurring in a sequence of time. The sequence begins with

the detection and identification of images and later by their

measurements. Images are then considered in term of information,

usually non-pictorial and finally deductions are made. The various

aspects of images interpretation are detection, identification,

analysis, classification, deduction and idealization. Most of these

have overlapping functions.

Detection

It is a process of "picking out" an object or element from photo or

image through interpretation techniques. It can be detection of

point, line or polygon locations.

Recognition / Identification

It is a process of classification or trying to distinguish an object. By

its characteristics or patterns which are familiar on the image. It

precedes the process of detection. Sometimes it is also termed as

photo-reading e.g. water features stream, canal, tank, sand etc.

Analysis

It is a process of resolving separating a set of objects or features

having similar set of characters. In analysis "lines of separation "are

drawn between group of objects and the degree of reliability of

these lines can also be indicated, e.g. sands as that of river, desert,

coastal, etc.

Classification

It is process of identification and grouping of objects or features

resolved by analysis. It arranges 'features of recurrence' in the


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same class or group to which the feature belongs. Any wrong

identification and analysis often may lead to misclassification.

Deduction

It is a process where inferences are drawn about the objects based

on direct or indirect evidence of the information or phenomena

under study, e.g. salt encrustation; inference; agricultural activity.

Deductions may be firmly confirmed by ground checks to avoid

misclassification.

Idealization

It is a process of drawing ideal or standard representation from

what is actually identified and interpreted from the image or map

e.g. set of symbols or colors to be adopted in land use and land

cover maps. This process helps in developing image interpretation

key.

Elements of Image Interpretation

There are certain fundamental photo-elements or image

characteristics seen on image, which aid in visual interpretation of

satellite imagery. Although, there is a difference of opinion on the

number of elements to be included. However there is general

consensus on the following:

(I) Tone or color (II) pattern (III) texture (IV) size, (V) shape, (VI)

shadow, (VII) location, (VIII) association and (IX) Resolution

Tone or color

Different surface objects reflect and emit different amounts of

radiant energy. These differences are recorded as tonal/ colours or

density variations on the imagery. In black and white images,

objects appear in different gray tones. These gray tones often fail to

provide the interpreter a clear perception of objects. Whereas, true

colours or false colours imagery increases interpretability by

providing subtle tonal contrast between them. Tonal contrast can be

enhanced or reduced optically or by enhancement techniques using

computers.

Pattern

It refers to the spatial arrangements of surface features, which are

characteristic of both natural and man-made objects. Similar


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features under similar environmental conditions reflect similar

patterns of recurrence e.g. salt affected land in irrigated areas and

gullies in eroded areas. Pattern is of several types e.g. linear

road/rail/canal; non-linear-streams, creeks; contiguous snow, sand;

clustered settlements; dispersed-forest blanks, salt affected patches;

rural - orchards, strip cropping etc., More often, patterns also reflect

associations e.g. intensity of drainage patterns shows its relation

with rock types, soil texture, rainfall, run-off, etc.

Texture

It is defined as a repetition of basic pattern. Texture in the image is

due to tonal repetitions in a group of objects, which are often too

small to be discernible. It creates a visual impression of surface

roughness or smoothness of objects and is a useful photo element

in image interpretation e.g. salt affected land — fine to mottled;

rocky areas - coarse.

Size

It refers to the spatial dimension of object. On ground Size of an

object is a function of scale of the image or photo and is also

measurable. There are different objects with varying sizes and

shapes e.g. gullies-varying size and depths; sandy areas large.

Shape

It refers to physical form of an object and is also a function of scale

of the image or photo. Size and shape are inter-related. In the image

- shape refers to plan or top view of the object as seen by the

satellite. Shape can be irregular e.g. salt affected patches; boundary

of undulating uplands; regular and uniform - snow or glacier.

Shadow

They are cast due to sun's illumination angle, size and shape of the

object or sensor-viewing angle. The shape and profile of shadows

help in identifying different surface objects e.g. clouds-nature of hill

slopes aspect-apparent relief etc. They also help in arriving at tree

heights or chimney/building heights on aerial photos.

Location

The geographical site and location of the object often provide clue for

identifying objects and understanding their genesis e.g. salt affected


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land - inland river/desert plains or forest blanks hill slopes; snow or

glacier, mountain peaks, etc.

Association

It refers to situation of the object with respect to other surface

features and neighbouring objects e.g. canals with agricultural fields;

marsh or swamps with flood plains and tidal flats; gullies or ravines

with severely eroded lands.

Resolution

It is of two types - spatial and spectral. The former refers to "picture

element" or pixel discernible on the image or smallest area

resolvable or identifiable on ground. Spatial resolution allows the

interpreter to detect and distinguish the smallest object on the

ground.

Procedure of Land use /Land cover map preparation form

satellite imagery

The method for preparation of Land use\Land cover maps is shown as

flow chart below:

➢ Registration of Satellite images

➢ Identification of Study Area on satellite images

➢ Base map preparation

➢ Visual Interpretation and mapping of LU/LC Categories using

Satellite Image

➢ Field Verification of doubtful areas and modification of theme

details

➢ Final LU/LC map then formatted using standard Remote Sensing

software

➢ Estimation of area

Observations

Habitation with vegetation i.e, settlement is the most dominant land

use pattern surrounding the 10 km radius of the project site. The

settlement includes both Built up area, i.e. inhabited area with

municipal/civic facilities and rural settlement in the said area. Rocky

outcrop covered with vegetation comes subsequent to the

settlement. Agriculture comes next to the exposed rocky outcrop

unit. Sandflat / sandy area is the next leading unit. Industrial area


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although not present as substantial amount but ranks next to sandy

area in study area. The presence of some other categories of land

use classes such as, open/ vacant land, Brick Kiln, vegetation other

than agriculture, water body, stone quarries and structure other than

industrial category such as stadium, zoo, etc. are also noticed in the

10 km periphery of the proposed site but not in significant extent. All

the land use/ land cover units have been properly delineated for this

project. The spatial distribution of various land use / Land cover is

given in Table 3.3.1 and the pie diagram of the same is presented

in Figure 3.3.1. The landuse map surrounding 10 km radius of the

project site is presented in Figure 3.3.2. The database on land use /

land cover belongs to project area & 10 km radius of the project area

are discussed as follows:

a) Habitation with Vegetation / Settlement: This is the most

dominant land use class present within the 10 km radius of Guwahati

Refinery. Nearly 35.54 % of the study area is under this category. The

settlement pattern is mostly mixed type, i.e. both found in the rural as

well as in urban areas in the surround region. This unit is mainly found

in the southern side of the river Brahmaputra.

b) Rocky Outcrop with vegetation: This is the next most dominant

landuse / cover class present within 10 km radius of the refinery.

About 23.71% of the total area is occupied by this unit. The periphery

of the hills or rocky outcrop is encroached by growing settlement in the

said area.

c) Agriculture land: About 13.31% of the study area is occupied by

agriculture area. The agriculture is mostly mixed type, i.e. both single

crop as well as the double crop pattern is available in the nearby area.

d) Sandy area/ Sand flat: This class includes mainly riverine sand in the

area. Nearly 10.87% i.e, 11% of the study area is occupied by the said

unit.

e) Industrial Area: Industrial area occupies about 3.80% of the total

land of the 10 km surrounding area of the refinery.

Although other landuse classes are present as insignificant percentage

but needs to be considered for environmental degradation of the area

which includes, open/ vacant land, other vegetation, stone quarries,


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vegetation other than agriculture, water body in the form of tank and

reservoirs, Brick kiln etc. present in the vicinity of the refinery.

The spatial distribution of various land use / land cover are given in

Table-3.3.1 and the pie diagram of the same presented in Figure-

3.3.1.

Land use pattern of the study area has been shown in Figure-3.3.2.

TABLE-3.3.1

AREA STATISTICS OF DIFFERENT LANDUSE CATEGORIES WITHIN 10

KM RADIUS OF GUWAHATI REFINERY

Sl.

No Class

Area

(in km2)

Area (in

Hectare)

Area (in

Percentage)

1 Agriculture land 41.88 4187.65 13.31

2 Brick Kiln 1.57 156.74 0.50

3 Habitation with

Vegetation 111.77 11177.06 35.54

4 Industrial area 11.96 1195.78 3.80

5 Open/ Vacant Land 1.55 155.08 0.49

6 Other Structure 1.01 100.87 0.32

7 Railway track 1.20 119.93 0.38

8 River 26.13 2612.67 8.31

9 Riverine island 1.90 189.88 0.60

10 Rocky Outcrop with Vegetation

74.57 7456.96 23.71

11 Sand flat / Sandy area 34.19 3419.13 10.87

12 Stone quarries 1.71 170.73 0.54

13 Vegetation other than agriculture

3.22 321.81 1.02

14 Water body 1.89 188.58 0.60

Total of all classes 314.55 31452.87 100.00


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FIGURE-3.3.1:

LAND USE / LAND COVER CLASSES: PERCENTAGE OF AREA


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FIGURE 3.3.2: LAND USE PATTERN OF THE STUDY AREA


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3.4 SOIL

Soil may be defined as a thin layer of earth’s crust that serves as a

natural medium for the growth of plants. It is the unconsolidated

mineral matter that has been subjected to and influenced by genetic

and environmental factors such as parent materials, climate,

organisms and physico-chemical action of wind, water and sunlight, all

acting over a period of time. Soil differs from the parent materials in

the morphological, physical, chemical and biological properties. Also

soil differs among themselves in some or all the genetic or

environmental factors, therefore, some soils are yellow, some are

black, some are reddish, some are coarse textured. They serve as a

reservoir of nutrients for plants and crop and also provide mechanical

anchorage and favorable tilth.

3.4.1 FIELD STUDY, SAMPLING & ANALYSIS

To assess the impacts of the industrial and urban activities on the soils

in the study area, the physico-chemical characteristics of soils within

the study area have been examined by obtaining soil samples from

selected points and analysis of the same.

Four (4) sampling stations were selected for studying soil

characteristics, which has been shown in Table-3.4.1. Stations have

been spread over the study area, keeping in view the vegetative

cover, soil types and maximum deposition of pollutants emitted

through stacks, which would accord an overall idea of the soil

characteristics within the study area.

The samples were collected once in the study period. A number of

parameters were determined which are indicative of physical, chemical

and fertility characteristics. The physico-chemical characteristics of the

soils in the study area, as obtained from the analysis of the soil

samples, are presented in Table-3.4.2.

3.4.2 CHARACTERISTICS OF SOIL IN THE STUDY AREA

The soils of Guwahati uplands developed on Pleistocenes alluvial are

generally coloured in different shades of red, brown, yellow etc. These

soils are made up of one or more number of type horizons. The

horizons included red loamy soils, soils dominantly made up of ferric

oxide nodules, firm indurated laterite and soft plinthites. The

generalized sequence in a profile is Brown loamy soil-nodule dominant

brown soil-firm laterite-yellow and white variegated soil from top


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downward. The horizons have variable characteristics but all of them

are low in organic matter, total nitrogen and reserve fertility. It has

been found that profile with about 1 metre of Brown loamy soil on the

top is the best rooting medium for the forest growth.

The laterite soil has wide distribution in the central, western and

southwestern parts of the area. Such soils are distinguished from the

Brown soils by the occurrence of ferruginous concretions in a definite

layer.

According to textural type, soils in the district of Guwahati can be

classified as following types – a) Sandy, b) Sandy loam, c) Loam, d)

Sandy clay loam and f) clay.

Clay, clay dominated loamy soils are the most characteristics features

of soil in the study area.

3.4.2.1 Physical Characteristics

The physical properties examined include colour, texture, bulk density,

and water holding capacity. Colour of soils was observed generally as

Brownish to Reddish. It is well documented that soils ranging between

Brownish to Reddish are generally acidic with low in nitrogen, calcium,

phosphate and other plant nutrients.

Soils having larger particles usually have medium bulk density than

those of smaller particles. Bulk density of soils in the study area varied

between (1.14-1.3) gm/cm3 which is normal for such soils. Water

holding capacity of the soils varied between (30.3-37.2)%. Grain Size

analysis shows that gravel, sand, silt and clay in the study area were

found in the range of (23-32)%, (22-26)%, (13-17)% and (29-37)%

respectively.

3.4.2.2 Chemical Characteristics

The soils were slightly acidic with pH range (5.1-6.2). Electrical

conductivity (EC) was found varying between (532-602) µmhos/cm. In

soil samples, calcium content of the soils varied between (0.32-

0.43)%. Range of sodium in the soils varied between (0.49-0.66)%.

In soils, sodium generally occurs as NaCl, Na2SO4 and sometimes, as

Na2CO3 and other soluble salts. In comparison to sodium, potassium

levels were slightly low. Range of potassium varied between (0.11-

0.21)%. In this study Nitrogen level varied between (0.19-0.32)%.


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Most of the nitrogen is available in form of nitrates, nitrites, NH4+ and

organic nitrogen. The Phosphorous content ranged between (0.12-

0.17)%. Cation Exchange Capacity (CEC) varied between (25.8-29.3)

meq/100 gm. Ranges of Magnesium and Sulphur were varied between

(0.13-0.23)% and (0.08 - 0.11)%. Organic Matter in the soils was

observed between (1.9–3.3)%.

3.4.2.3 Fertility Status of Soil

The observed level of pH (5.1-6.2) is not expected to hinder the

growth of agricultural crops. Soils were observed to possess

appreciable level of Potassium, nitrogen, and phosphorous which

indicate moderate to good fertility or agricultural potential of the soils.

The levels of other elements were appreciably good. Thus, the overall

fertility status of the soils within the study area is reasonably good

and is not expected to be detrimental to the growth of agricultural and

forest crops.

The prevailing edaphic, hydrological and climatological conditions

favour production of paddy and quite a good number of other crops.

The prime agricultural crop paddy is grown during both of the kharif

and rabi seasons.

TABLE-3.4.1

CODE NO. & NAME OF LOCATIONS

Sample code Location Name

SS 1 Kharghuli N.C.

SS 2 Bonda 2

SS 3 Barbari

SS 4 Kharghuli


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TABLE-3.4.2

SOIL QUALITY IN THE STUDY AREA

Sl.

No. Parameters Units

Sampling Location Codes

SS-1 SS-2 SS-3 SS-4

PHYSICAL CHARACTERISTICS

1 Colour - Brown Clay

Radish Brown Clay

Brown Clay

Brown Clay

2 Texture - Sandy Loam

Sandy Loam

Sandy Loam

Sandy Loam

3 Bulk Density gm/cm3 1.2 1.3 1.22 1.14

4 Porosity % 48.2 44.3 46.2 42.6

5 Water Holding Capacity % 30.3 34.8 37.2 33.8

6 Grain Size Characteristics

(a) Gravel % 23 30 27 32 (b) Sand % 26 24 25 22 (c) Silt % 14 16 13 17 (d) Clay % 37 30 35 29

CHEMICAL CHARACTERISTICS

1 pH - 5.8 5.1 5.5 6.2

2 EC (µmhos/cm) µmhos/cm 552 602 532 593

3 Calcium (%) % 0.32 0.42 0.36 0.43

4 Magnesium (%) % 0.13 0.23 0.16 0.2

5 Sodium (%) % 0.49 0.63 0.52 0.66

6 Potassium (%) % 0.12 0.21 0.11 0.15

7 Sulphur (%) % 0.08 0.11 0.09 0.08

8 Nitrogen (%) % 0.22 0.32 0.19 0.21

9 Phosphorus (%) % 0.13 0.12 0.17 0.16

10 CEC ( meq/100 g) meq/100gm 29.3 26.6 25.8 27.9

11 Organic Matter (%) % 3.3 2.1 2.7 1.9

12 Copper (Mg/Kg) mg/Kg 1.6 2.1 1.9 2.3

13 Chromium (Mg/Kg) mg/Kg 2.3 3.3 4.2 7.3

14 Zinc (Mg/Kg) mg/Kg 1.5 8.2 2 4.4

15 Lead (Mg/Kg) mg/Kg 0.8 0.4 0.3 0.5


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3.5 METEOROLOGY

3.5.1 SEASONS

The climate of the project area is humid and tropical. It is

characterised by a hot and dry summer from March to May, a south-

west monsoon or rainy season from June to September, a pleasant

post-monsoon or retreating monsoon from October to November and

a cool winter from December to February. Therefore, climatologically,

four seasons viz. summer (pre-monsoon), monsoon, post-monsoon

and winter could be deciphered comprising the following months:

Summer : March, April, May

Monsoon : June, July, August, and September

Post-monsoon : October, November

Winter : December, January, and February

3.5.2 ON-SITE METEOROLOGICAL OBSERVATIONS

Air Pollutants upon discharge to atmosphere pass through a number of

mechanisms, which include diffusion and transportation leading to

dispersion. These mechanisms are governed by the local atmospheric

conditions. All these result in the necessity to collect the

meteorological parameters like ambient temperature, wind speed,

wind direction, and other weather conditions (relative humidity,

atmospheric pressure etc.), which will be ultimately used for the

prediction of the ground level concentrations of the air pollutants

through mathematical modelling.

For this purpose as also to corroborate and supplement the long term

meteorological data availed from IMD, Guwahati, a sophisticated on-

site meteorological observatory was established close to the project

site and operated continuously for the monitoring period of 9th

December, 2016 – 8th March, 2017.

The observatory was located about 10 m above the ground level and

ensured to be free from any obstruction to wind. Besides, this location

was found to be most suitable one being close to the project site. The

summary of the on-site data generated in respect of the above

parameters for the period mentioned above are presented in Table-

3.5.1. The Wind rose diagram for the entire period is shown in

Figures-3.5.1.


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3.5.3 RESULTS OF ON-SITE METEOROLOGICAL DATA

3.5.3.1 Temperature

The monthly maximum and minimum temperatures recorded on-site

during the aforesaid monitoring period (9th December,2016 – 8th

March, 2017) varied between (29.5-33.0)°C and (8.0-11.0)°C

respectively with overall maximum and minimum temperatures being

33.0°C and 8.0°C respectively (Table-3.5.1).

3.5.3.2 Relative Humidity

The monthly maximum and minimum relative humidity recorded on-

site during the said monitoring period varied between (74-85)% and

(44-61)% respectively, the overall maximum and minimum being

85% and 44% respectively (Table 3.5.1).

3.5.3.3 Atmospheric Pressure

The overall maximum and minimum atmospheric pressures recorded

on-site during the said monitoring period were 761.2 mmHg and

754.1 mmHg respectively (Table 3.5.1).

3.5.3.4 Wind Speed and Direction

The maximum wind speed 3.3 Km/hr was in the month of March while

the overall mean wind speed during the monitoring period was 2.5

Km/hr (Table 3.5.1). The predominant wind direction was observed

at North-East direction.


C3 - 27


Month

Temperature

(°C)

Relative

Humidity (%)

Barometric Pressure (mm Hg)

Average Velocity

(Km/hr) Max. Min. 08:30 hrs.

17:30 hrs.

08:30 hrs.

17:30 hrs.

From 9th

December,2016 to

31st December,

2016

32.5 9.5 81 57 760.4 754.4 1.9

January, 2017 29.5 8.0 77 52 761.2 754.7 2.1

February, 2017 33.0 11.0 74 52 758.2 754.1 2.6

Upto 8th March,

2017 32.5 11.0 76 56 758.8 754.6 3.3

OVERALL 33.0 8.0 81 52 761.2 754.1 2.5

TABLE-3.5.1

ON-SITE METEOROLOGICAL DATA

(9th December, 2016 – 8th March, 2017)


C3 - 28


FIGURE-3.5.1:

WIND ROSE DIAGRAM

9th December, 2016 – 8th March, 2017 (Calm: 46.4%)

January, 2017 (Calm: 53.7%)

February, 2017 (Calm: 35.6%)

9th December to 31st December, 2016 (Calm: 55.8%)

1st March to 8th March, 2017 (Calm: 28.1%)


C3 - 29


3.6 AIR QUALITY

3.6.1 SELECTION OF MONITORING STATIONS

The sources of air pollution in the region are industrial emissions,

vehicular traffic, dust arising from unpaved village roads and domestic

fuel burning. The prime objective of the baseline air quality study was

to establish the existing ambient air quality of the area. This will be

useful for assessing the conformity to standards of the ambient air

quality during the operation of the proposed power project.

The monitoring locations for establishing the baseline status of

ambient air quality has been identified on the basis of the following

considerations:

1. Meteorological conditions

2. Topography of the study area

3. Category of the area like habitat, forest etc.

4. Representative of likely affected area

Further, due consideration were also given to the likely affected zones

during construction and operation of the plant. The location of human

habitation and other sensitive areas within the study area were also

considered in selection of ambient air quality monitoring locations.

Eight (8) numbers of monitoring stations were set up to assess the

existing air quality of the study area. One station was located near

Guwahati Refinery at Refinery Hospital and the seven others, outside

the Refinery area. The locations of the monitoring stations were based

on the frequent wind directions in order to site the stations as close as

feasible to the anticipated maximum pollutant deposition areas,

moreover, duly considering human habitation and proximity to

sensitive zones within the study area. Logistic considerations as ready

accessibility, security, availability of reliable power supply etc. were

examined while finalizing the monitoring locations.

The Ambient Air Quality Monitoring locations have been presented in

Figure-3.6.1. The relative direction and distance of these locations

with respect to the project site have been tabulated in Table-3.6.1.


C3 - 30


3.6.2 PARAMETERS & FREQUENCY OF MONITORING

Ambient Air Quality Monitoring has been conducted for the period (9th

December, 2016 – 8th March, 2017) at a frequency of twice a week

at each station adopting a continuous 24 hours schedule in respect of

the following parameters:

- Particulate Matter-10 (PM10)

- Particulate Matter-2.5 (PM2.5)

- Sulphur Dioxide (SO2)

- Nitrogen Dioxide (NO2)

Carbon Monoxide (CO) and Hydrocarbon (Methane & non Methane)

monitoring has been conducted for the same period at a frequency of

twice a week at each station adopting a continuous 8 hours schedule.

The equipment was placed at a height of 3.0 to 4.5 metres above

ground level at each monitoring station, thus negating the effects of

windblown ground dust. The equipment was placed at open space free

from trees and other obstruction which otherwise act as a sink of

pollutants resulting in lower levels in monitoring results. At locations

close to highways, the equipment was placed at least 100 m away

from such highways/roads to avoid influence of traffic exhaust

emissions.

3.6.3 RESULTS & DISCUSSIONS

Statistical analysis (minimum, maximum, arithmetic mean and 98

percentile values) of the ambient air quality in the study area for the

entire three months monitoring period are shown in Table-3.6.2. The

results of such analysis are pictorially presented from Figure-3.6.2 to

Figure-3.6.8.

The following implications can be made on the basis of the obtained

results:

3.6.3.1 Particulate Matter-10 (PM10)

Arithmetic Mean of the 24-hourly average values of PM10 varied

station-wise between 54.0 g/m3 (at Satgaon) to 72.4 g/m3

(Silpukhuri) with overall mean of all 8 stations being 63.7 g/m3.

Arithmetic Mean of the 24-hourly average values of PM10 at all

locations is under the limit of (100 µg/m3) National Ambient Air

Quality Standards, 2009.


C3 - 31


The 24-hourly average 98-percentile values of PM10 varied station-wise

between 65.5 g/m3 (at Satgaon) and 92.5 g/m3 (Silpukhuri) with

overall mean of all 8 stations being 91.9 g/m3.

3.6.3.2 Particulate Matter - 2.5 (PM2.5)

Arithmetic Mean of the 24-hourly average values of PM2.5 varied

station-wise between 21.5 g/m3 (at Satgaon) to 30.9 g/m3

(Silpukhuri) with overall mean of all 8 stations being 26.2 g/m3.

Arithmetic Mean of the 24-hourly average values of PM2.5 at all

locations is under the limit of (60 µg/m3) National Ambient Air Quality

Standards, 2009.

The 24-hourly average 98-percentile values of PM2.5 (max 43.0 g/m3

observed Silpukhuri), at all the locations were observed to be well

within the limit of 60 g/m3, as stipulated in the National Ambient Air


3.6.3.3 Sulphur Dioxide (SO2)

Arithmetic mean of 24-hourly average values of SO2 varied station

wise between 6.3 g/m3 (at Birkuchi) to 12.7 g/m3 (near Silpukhuri)

with overall mean of all 8 stations being 9.5 g/m3. Arithmetic Mean of

the 24-hourly average values of SO2 at all locations is under the limit

of (80 µg/m3) National Ambient Air Quality Standards, 2009.

The 24-hourly average 98-percentile values of SO2 (max 19.0 g/m3

observed at Silpukhuri) at all the locations were well below the

permissible limit of 80 g/m3 for industrial areas, as stipulated in the

National Ambient Air Quality Standards, 2009.

3.6.3.4 Nitrogen Dioxide (NO2)

The overall arithmetic mean of 24-hourly average values of NO2 over

the entire study area was 26.3 g/m3 while individual arithmetic mean

levels computed at 8 stations ranged between 17.7 g/m3 (at

Satgaon) to 32.8 g/m3 values of NO2 at all locations is under the limit

of (80 µg/m3) National Ambient Air Quality Standards, 2009.

The 24-hourly average 98-percentile values of NO2 (max 42.0 g/m3

observed at Silpukhuri) at all the locations were well below the

permissible limit of 80 g/m3, as stipulated in the National Ambient Air



C3 - 32


3.6.3.5 Carbon Monoxide (CO)

The overall arithmetic mean of 8-hourly average values of CO over the

entire study area was 0.565 mg/m3 while individual arithmetic mean

levels computed at 8 stations ranged between 0.441 mg/m3 (at

Satgaon) to 0.729 mg/m3 (at Silpukhuri). Arithmetic Mean of the 24-

hourly average values of CO at all locations is under the limit of (2

mg/m3) National Ambient Air Quality Standards, 2009.

The 24-hourly average 98-percentile values of CO (max 1.176 mg/m3

observed at Gopal Nagar) at all the locations were well below the

permissible limit of 2 mg/m3, as stipulated in the National Ambient Air


3.6.3.5 Hydro Carbon (Methane) (HC)

The overall arithmetic mean of 8-hourly average values of M-HC over

the entire study area was 0.49 mg/m3 while individual arithmetic mean

levels computed at 8 stations ranged between 0.38 mg/m3 (at Gopal

Nagar) to 0.99 mg/m3 (at Silpukhuri). The Maximum 98-percentile

values of M-HC was 0.96 mg/m3 observed at Silpukhuri.

3.6.3.5 Hydro Carbon (Non-Methane) (HC)

The overall arithmetic mean of 8-hourly average values of NM-HC over

the entire study area was 0.12 mg/m3 while individual arithmetic mean

levels computed at 8 stations ranged between 0.09 mg/m3 (at

Satgaon) to 0.14 mg/m3 (at Sundarpur). The Maximum 98-percentile

values of NM-HC was 0.25 mg/m3 observed at Silpukhuri.

Conclusion

The values of all the pollutants at the respective locations were within

the acceptable ranges on all the occasions.


C3 - 33


Table - 3.6.1

Ambient Air Quality Monitoring Locations

Sl.

No.

Location

Code

Location Distance w.r.t.

Project site (centre) (km)

Direction

w.r.t. Project site (centre)

1. AQ1 Refinery Hospital 0.65 W

2. AQ2 Gopal Nagar 2.0 N

3. AQ3 Birkuchi 3.4 E

4. AQ4 Satgaon 4.0 SE

5. AQ5 SBI Colony 4.1 S

6. AQ6 Janaknagar 7.0 SW

7. AQ7 Sundarpur 3.7 SW

8. AQ8 Silpukhuri 4.7 W


C3 - 34


TABLE-3.6.2

STATISTICAL ANALYSIS RESULTS OF AIR POLLUTANTS

(Period: 9th December, 2016 – 8th March, 2017)

Pollutants Locations MES Min Max A.M. P-98

PM10 (µg/m3)

Refinery Hospital 26 53 84 66.6 82.5

Gopal Nagar 26 48 77 59.4 74.5

Birkuchi 26 45 68 56.6 66.5

Satgaon 26 41 66 54.0 65.5

SBI Colony 26 52 90 67.7 86.0

Janaknagar 26 54 78 63.7 77.0

Sundarpur 26 58 94 68.8 88.0

Silpukhuri 26 56 97 72.4 92.5

Overall 208 41 97 63.7 91.9

PM2.5 (µg/m3)


Gopal Nagar 26 17 35 24.3 33.9

Birkuchi 26 16 29 22.3 28.5

Satgaon 26 14 29 21.5 28.5

SBI Colony 26 19 41 28.2 39.2

Janaknagar 26 21 35 26.0 33.9

Sundarpur 26 21 44 28.6 39.8

Silpukhuri 26 23 45 30.9 43.0

Overall 208 14 45 26.2 42.5

SO2 (µg/m3)


Gopal Nagar 26 6 12 8.4 12.0

Birkuchi 26 4 9 6.3 9.0

Satgaon 26 6 10 7.8 10.0

SBI Colony 26 8 15 9.9 14.5

Janaknagar 26 6 12 8.5 12.0

Sundarpur 26 7 17 10.1 16.5

Silpukhuri 26 8 20 12.7 19.0

Overall 208 4 20 9.1 18.7

NO2 (µg/m3)


Gopal Nagar 26 19 31 25.2 31.0

Birkuchi 26 16 27 21.1 26.5

Satgaon 26 12 24 17.7 24.0

SBI Colony 26 21 37 25.5 33.5

Janaknagar 26 23 38 28.3 35.5

Sundarpur 26 26 44 30.6 40.0

Silpukhuri 26 25 42 32.8 42.0

Overall 208 12 44 26.3 41.7


C3 - 35


TABLE-3.6.2 (Contd…)

STATISTICAL ANALYSIS RESULTS OF AIR POLLUTANTS

(Period: 9th December, 2016 – 8th March, 2017)

Pollutants Locations MES Min Max A.M. P-98

M-HC

ppm

Refinery Hospital 78 0.26 0.81 0.49 0.73

Gopal Nagar 78 0.22 0.65 0.38 0.63

Birkuchi 78 0.28 1.01 0.51 0.97

Satgaon 78 0.23 0.72 0.40 0.63

SBI Colony 78 0.27 0.84 0.49 0.81

Janaknagar 78 0.28 0.90 0.51 0.83

Sundarpur 78 0.27 0.96 0.53 0.90

Silpukhuri 78 0.34 1.01 0.59 0.96

Overall 624 0.22 1.01 0.49 0.97

NM-HC ppm


Gopal Nagar 78 0.02 0.18 0.10 0.17

Birkuchi 78 0.02 0.20 0.11 0.19

Satgaon 78 0.02 0.18 0.09 0.17

SBI Colony 78 0.02 0.21 0.12 0.21

Janaknagar 78 0.04 0.23 0.13 0.20

Sundarpur 78 0.02 0.21 0.14 0.20

Silpukhuri 78 0.03 0.28 0.14 0.25

Overall 624 0.02 0.28 0.12 0.24

CO (mg/m3


Gopal Nagar 78 0.213 1.211 0.565 1.176

Birkuchi 78 0.289 1.124 0.533 0.997

Satgaon 78 0.201 0.934 0.441 0.906

SBI Colony 78 0.303 1.237 0.565 1.106

Janaknagar 78 0.225 1.250 0.564 1.126

Sundarpur 78 0.345 1.305 0.598 1.174

Silpukhuri 78 0.408 1.264 0.729 1.124

Overall 624 0.201 1.305 0.565 1.176

N.B.: MES - No. of measurements, MIN - Minimum, MAX - Maximum,

A.M. - Arithmetic Mean, P-98 - 98 percentile.


C3 - 36


Location Code Location

AQ1 Refinery Hospital

AQ2 Gopal Nagar

AQ3 Birkuchi

AQ4 Satgaon

AQ5 SBI Colony

AQ6 Janaknagar

AQ7 Sundarpur

AQ8 Silpukhuri

Ambient Air Quality

Monitoring Station

FIGURE 3.6.1 : AMBIENT AIR QUALITY MONITORING STATIONS

AQ1

AQ2

AQ3

AQ4

AQ5

AQ6

AQ7

AQ8


C3 - 37


FIGURE-3.6.2: PM10 FIGURE 3.6.3: PM2.5

FIGURE 3.6.4: SO2 FIGURE 3.6.5: NO2


C3 - 38


FIGURE 3.6.6: M-HC FIGURE 3.6.7: M-HC

FIGURE 3.6.8: CO


C3 - 39


3.6.4 TRAFFIC STUDY ASSESSMENT

The traffic studies have been conducted to know the prevailing

traffic volumes on the roads near the project site. It is essential to

consider these details for assessing the anticipated future traffic

volumes as a part of overall impacts assessment for the project.

The variations of traffic densities depend upon the working days

and time and also vary in day and night times. In order to assess

the prevailing traffic volumes on the roads, the survey was

conducted during normal working day of the week by avoiding local

holidays or abnormal situations to reflect the true picture of the

traffic densities. The traffic study was conducted at one location for

24 hours.

The Traffic density was monitored near Noonmati bus stop.

The data were recorded once for a day at the location in the month

of February, 2017, for continuous 24 hours in a day, under three

different vehicle categories i.e., Heavy, Medium and Light. The

heavy vehicles included trucks, buses, cranes etc. The medium

vehicles included mini buses; matadors etc. while cars, jeeps, two

wheelers and auto rickshaws were considered under the light

vehicles category. The relevant accounts have been gathered in

Table-3.6.3.


C3 - 40


TABLE-3.6.3

NAME OF THE LOCATION: NEAR NOONMATI BUS STOP

DATE OF SAMPLING: 14.02.2017

HOUR HEAVY MEDIUM LIGHT TWO

WHEELERS TOTAL

0700 - 0800 31 16 169 166 382

0800 - 0900 44 21 143 218 426

0900 - 1000 51 53 113 203 420

1000 - 1100 62 62 84 187 395

1100 - 1200 74 74 79 169 396

1200 - 1300 58 81 84 136 359

1300 - 1400 62 86 72 147 367

1400 - 1500 69 71 78 119 337

1500 - 1600 52 68 84 84 288

1600 - 1700 75 79 91 132 377

1700 - 1800 43 58 174 118 393

1800 - 1900 37 36 102 75 250

1900 - 2000 31 44 74 68 217

2000 - 2100 54 37 82 74 247

2100 - 2200 36 32 64 56 188

2200 - 2300 32 18 46 48 144

2300 - 0000 21 14 24 27 86

0000 - 0100 16 11 16 20 63

0100 - 0200 12 8 11 9 40

0200 - 0300 8 6 7 0 21

0300 - 0400 13 10 10 0 33

0400 - 0500 15 18 19 10 62

0500 - 0600 14 21 28 8 71

0600 - 0700 23 24 58 48 153

TOTAL 933 948 1712 2122 5715

NOTE : HEAVY : Truck, Bus, Cranes,

MEDIUM : Minibus, Matador, Minidor,

LIGHT : Car, Jeep, Auto Rickshaw, Trekker


C3 - 41


3.7 WATER ENVIRONMENT

WATER BODIES IN THE STUDY AREA

The main surface water body in the study area is the river

Brahmaputra . This river is mainly perennial in nature, which means it

has sufficient water to flow all around the year. Besides, a number of

confined water bodies, viz. tanks, ponds, jheels, roadside burrows etc.

which form a part of surface hydrological system, exist within the

study area. As the River Brahmaputra is the main drainage channel of

the region, this river receives pollution loads of industrial and domestic

waste water and also agricultural run-off. Ground water sources are

mainly bore wells, tube wells and dug wells which are scattered in the

whole study area.

PRESENT WATER USE

The water demand of the area can be broadly classified into domestic,

agricultural and industrial. All these demands are met from both

surface and ground water sources.

WATER SAMPLING

As surface water, water samples were collected and analyzed from

total ten (10) locations, including two (2) different locations from the

River Brahmaputra and from eight (8) different ponds of different

locations and as ground water, water samples were collected and

analyzed from total eight (8) locations from tube wells/Bore Wells of

different locations to assess the baseline status of the whole ground

water quality in the study area.

All the samples were analyzed with respect to physical, chemical and

biological parameters including toxic organics and metals, adopting

Standard methods. The locations of the sampling points for both

surface and ground water are tabulated in Table-3.7.1.

3.7.1 SURFACE WATER QUALITY

Surface Water samples were collected from two (2) different locations

(SW1 & SW2) of River Brahmaputra and eight (8) different locations

of pond water samples (SW3 to SW10) to analyze and assess the

surface water quality of the study area.

Sampling and analysis of surface water were carried out following the

analysis techniques and methodology described in relevant Indian


C3 - 42


Standards, the guidelines of the concerned body, American Water

Works Association (AWWA) etc.

RESULTS OF SURFACE WATER QUALITY MONITORING:

Results of Water Quality of the River Brahmaputra

The water quality monitoring results of two (2) water samples

(Upstream- near DC Banglow, SW1 & Downstream- Near Uzanbazar,

SW2 from River Brahmaputra have been compiled in Table-3.7.2.

The pH values of the collected two water samples (SW1 & SW2) from

the River Brahmaputra were found 7.2 and 7.4, Values of Dissolved

Oxygen were observed (6.5 & 6.7) mg/lit. Total Dissolved Solids were

found (163 & 168) mg/lit while values of total Hardness were found

(102 & 99) mg/lit. Calcium & Magnesium were found (31 & 28) mg/lit

and (6 & 7) mg/lit respectively. Oil and grease was below detection

limit (<1.4 mg/lit) in these two samples. Sulphate, Nitrate and

Chloride were observed 3 mg/lit, (1.9 & 1.6) mg/lit and (22 & 25)

mg/lit respectively. Iron contents were found (0.2 & 0.4) mg/lit and

zinc contents were found 0.07 & 0.06 mg/lit in both samples.

Heavy metals like copper, lead, mercury, cadmium and chromium in

these two (2) river water samples (SW1 & SW2) were below their

respective detection limits.

Results of Pond Water Quality:

The water quality monitoring results of eight (8) pond water samples

(SW3 to SW10) have been compiled in Table-3.7.2.

The pH values of the collected pond water samples were found in the

range of (6.8 - 8.0). Dissolved Oxygen was observed in the ranges of

(5.7 - 6.5) mg/lit. Total Dissolved Solids were found in the ranges of

(164 - 265) mg/lit while Total Hardness was found in the ranges of

(118 - 177) mg/lit. Calcium & Magnesium were found varying in the

ranges of (34 - 51) mg/lit and (8 - 13) mg/lit respectively. Oil and

grease was below detection limit (<1.4 mg/lit) in these samples.

Sulphate, Nitrate and Chloride were observed varying in the ranges of

(4 - 13) mg/lit, (1.3 – 4.1) mg/lit and (24 - 48) mg/lit respectively.

Values of Iron and zinc contents were found in the ranges of (0.35 -

1.5) and (0.09 – 0.42) mg/lit respectively.


C3 - 43


Heavy metals like copper, lead, mercury, cadmium and chromium of

these pond water samples (SW3 to SW10) were below their

respective detection limits.

3.7.2 GROUND WATER QUALITY

Total eight (8) ground water samples were collected in which two (2)

sample (GW6 & GW8) was collected from bore well; and rest six (6)

samples were collected from tube well of different locations to assess

the baseline status of ground water quality of the surrounding 10 km

radius study area.

Sampling and analysis of ground water were carried out following the

analysis techniques and methodology described in relevant Indian

Standards, the guidelines of the concerned body, American Water

Works Association (AWWA) etc. The ground water quality monitoring

results have been tabulated in Table-3.7.3.

RESULTS OF GROUND WATER QUALITY MONITORING:

The pH values of collected ground water samples were found in the

range of (6.7-7.3). Values of Total Dissolved Solids (TDS) were found

in the ranges of (174 - 235) mg/lit while Total Hardness were found in

the ranges of (122 - 184) mg/lit. Calcium and Magnesium were found

varying in the ranges of (31 - 49) mg/lit and (8 - 19) mg/lit

respectively. Sulphate, Nitrate and Chloride were observed in the

ranges of (3 - 6) mg/lit, (1.6 – 2.7) mg/lit and (22 - 45) mg/lit

respectively. Iron contents were found in the ranges of (0.09 - 0.21)

mg/lit and zinc contents were found (0.06 – 0.1 mg/lit.) in all ground

water samples. Alkalinity was found in the ranges of (103 - 140)

mg/lit.

Other heavy metals like copper, Chromium, Cadmium, arsenic and

lead were below their respective detection limits.

Conclusion:

Conclusion can be drawn in the light of the overall analysis made so

far that both the surface & the ground water in the study area is free

from any kind of industrial and urban pollution and has been found to

be generally fit for human consumption.


C3 - 44


TABLE-3.7.1

Water Quality Monitoring Locations in the study area

Sample Code Locations

Surface Water:

SW1 Brahmaputra River(Near DC Banglow)

SW2 Brahmaputra River(Near Uzanbazar)

SW3 Kenduguri (Pond Water)

SW4 Silpukhuri at Paltanbazar (Pond Water)

SW5 Dighali pukhuri at Panbazar (Pond Water)

SW6 Raijori Pukhuri at Birkuchi (Pond Water)

SW7 Batahguli (Pond Water)

SW8 Beltala (Pond Water)

SW9 Barsapara (Pond Water)

SW10 Rupnagar (Pond Water)

Ground Water:

GW1 Gopalnagar (Tube well)

GW2 Birkuchi (Tube well)

GW3 Satgaon (Tube well)

GW4 SBI Colony (Tube well)

GW5 Jouaknagar (Tube well)

GW6 Sundarpur (Borewell water)

GW7 Silpukhuri (Tube well)

GW8 Near IOCL Refinery (Bore well water)


C3 - 45


TABLE-3.7.2

Surface Water Quality Sl.

No. Parameters Unit

SAMPLE CODES

SW1 SW2 SW3 SW4 SW5

1 Colour Hazen Colourless Colourless Colourless Colourless Colourless

2 Odour Unobj. Unobj. Unobj. Unobj. Unobj.

3 pH 7.2 7.4 7.6 6.8 7.8

4 Conductivity µmhos/c

m 284 288 308 332 344

5 Dissolved Oxygen mg/L 6.5 6.7 6.2 6.1 6

6

Biochemical Oxygen Demand

(3 days at 270C) mg/L 2 3 4 7 5

7 Total Coliforms MPN/100

ml 558 640 768 846 741

8 Total Dissolved Solids mg/L 163 168 178 186 196

9 Oil & Grease mg/L <1.4 <1.4 <1.4 <1.4 <1.4

10 Cyanide ( as CN ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

11 Phenol ( as C6H5OH ) mg/L <0.001 <0.001 <0.001 <0.001 <0.001

12 Total Hardness ( as CaCO3 ) mg/L 102 99 135 128 140

13 Chloride ( as Cl ) mg/L 22 25 32 26 38

14 Sulphate ( as SO4 ) mg/L 3 3 5 4 6

15 Nitrate ( as NO3 ) mg/L 1.9 1.6 1.9 2.3 1.8

16 Fluoride ( as F ) mg/L 0.1 0.2 0.2 0.25 0.38

17 Calcium ( as Ca ) mg/L 31 28 34 38 41

18 Magnessium ( as Mg ) mg/L 6 7 12 8 9

19 Copper ( as Cu ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

20 Iron ( as Fe ) mg/L 0.2 0.4 1.5 0.85 0.62

21 Manganese ( as Mn ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

22 Zinc ( as Zn ) mg/L 0.07 0.06 0.12 0.11 0.09

23 Boron ( as B ) mg/L <0.02 <0.02 <0.02 <0.02 <0.02

24 Arsenic ( as As ) mg/L <0.002 <0.002 <0.002 <0.002 <0.002

25 Mercury ( as Hg ) mg/L <0.001 <0.001 <0.001 <0.001 <0.001

26 Lead ( as Pb ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

27 Cadmium ( as Cd ) mg/L <0.01 <0.01 <0.01 <0.01 <0.01

28 Alkalinity ( as CaCO3 ) mg/L 123 128 119 136 122

29 Hexavalent Chromium ( as Cr+6 )

mg/L <0.05 <0.05 <0.05 <0.05 <0.05

Unobj. – Unobjectional

CODE LOCATION NAME

SW1 Brahmaputra River(Near `DC Banglow)

SW2 Brahmaputra River(Near Uzanbazar)

SW3 Pond Water (at Kenduguri)

SW4 Silpukhuri At Paltanbazar (Pond)

SW5 Dighali pukhuri at Panbazar (Pond)


C3 - 46


TABLE-3.7.2 (Continued)

Surface Water Quality Sl.

No. Parameters Unit

SAMPLE CODES

SW6 SW7 SW8 SW9 SW10

1 Colour Hazen Colourless Colourless Colourless Colourless Colourless

2 Odour Unobj. Unobj. Unobj. Unobj. Unobj.

3 pH 7.3 6.9 7.5 8 7.2

4 Conductivity µmhos/cm 292 376 360 420 472

5 Dissolved Oxygen mg/L 6.5 5.8 6 5.7 6.3

6 Biochemical Oxygen Demand

(3 days at 270C) mg/L 3 6 5 4 6

7 Total Coliforms MPN/100 512 912 866 1230 1628


9 Oil & Grease mg/L <1.4 <1.4 <1.4 <1.4 <1.4

10 Cyanide ( as CN ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

11 Phenol ( as C6H5OH ) mg/L <0.001 <0.001 <0.001 <0.001 <0.001

12 Total Hardness ( as CaCO3 ) mg/L 118 148 156 163 177



15 Nitrate ( as NO3 ) mg/L 1.3 2.2 3.6 3.1 4.1

16 Fluoride ( as F ) mg/L 0.1 0.2 0.28 0.4 0.46

17 Calcium ( as Ca ) mg/L 34 46 41 47 51


19 Copper ( as Cu ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

20 Iron ( as Fe ) mg/L 0.4 0.8 0.52 0.35 0.44


22 Zinc ( as Zn ) mg/L 0.13 0.17 0.2 0.3 0.42

23 Boron ( as B ) mg/L <0.02 <0.02 <0.02 <0.02 <0.02

24 Arsenic ( as As ) mg/L <0.002 <0.002 <0.002 <0.002 <0.002

25 Mercury ( as Hg ) mg/L <0.001 <0.001 <0.001 <0.001 <0.001

26 Lead ( as Pb ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

27 Cadmium ( as Cd ) mg/L <0.01 <0.01 <0.01 <0.01 <0.01



mg/L <0.05 <0.05 <0.05 <0.05 <0.05


CODE LOCATION NAME

SW6 Raijori Pukhuri at Birkuchi (Pond)

SW7 Pond Water (at Batahguli)

SW8 Pond Water (at Beltala)

SW9 Pond Water (at Barsapara)

SW10 Pond Water (at Rupnagar)


C3 - 47


TABLE-3.7.3

Ground Water Quality Sl.

No. Parameter Unit

SAMPLE CODE

GW1 GW2 GW3 GW4 GW5

1 Colour Hazen Unit Colourless Colourless Colourless Colourless Colourless

2 Odour - Unobj. Unobj. Unobj. Unobj. Unobj.

3 Taste - Agreeable Agreeable Agreeable Agreeable Agreeable

4 Turbidity NTU 1 2 3 2 1

5 pH - 6.8 7.1 6.8 6.7 7.3

6 Conductivity µs/L 310 357 377 382 345

7 Total Hardness ( as CaCO3

) mg/L 144 150 122 146 174

8 Iron ( as Fe ) mg/L 0.12 0.14 0.09 0.12 0.18


10 Residual Free Chlorine mg/L nil nil nil nil nil

11 Fluoride ( as F ) mg/L 0.12 0.16 0.13 0.1 0.14


13 Calcium ( as Ca ) mg/L 36 42 34 39 46


15 Copper ( as Cu ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05



18 Nitrate ( as NO3 ) mg/L 1.8 2.1 1.8 2.3 1.9

19 Phenol Compounds ( as C6H5OH )

mg/L <0.001 <0.001 <0.001 <0.001 <0.001

20 Mercury ( as Hg ) mg/L <0.001 <0.001 <0.001 <0.001 <0.001

21 Cadmium ( as Cd ) mg/L <0.01 <0.01 <0.01 <0.01 <0.01

22 Arsenic ( as As ) mg/L <0.002 <0.002 <0.002 <0.002 <0.002

23 Cyanide ( as CN ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

24 Lead ( as Pb ) mg/L <0.05 <0.05 <0.05 <0.05 <0.05

25 Zinc ( as Zn ) mg/L 0.07 0.1 0.08 0.1 0.06


mg/L <0.05 <0.05 <0.05 <0.05 <0.05


28 Boron ( as B ) mg/L <0.02 <0.02 <0.02 <0.02 <0.02


ml absent absent absent absent absent


CODE LOCATION NAME

GW1 Tube well water (Near Gopalnagar)

GW2 Tube well water (Near Birkuchi)

GW3 Tube Well water (Near Satgaon)

GW4 Tubewell water (Near SBI Colony)

GW5 Tube well water (Near Jouaknagar)


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TABLE-3.7.3 (Continued)

Ground Water Quality

Sl.

No. Parameter Unit

SAMPLE CODE

GW6 GW7 GW8

1 Colour Hazen Unit Colourless Colourless Colourless

2 Odour - Unobj. Unobj. Unobj.

3 Taste - Agreeable Agreeable Agreeable

4 Turbidity NTU 3 1 2

5 pH - 6.9 7.2 7.1

6 Conductivity µs/L 397 428 385

7 Total Hardness ( as CaCO3

) mg/L 155 184 140

8 Iron ( as Fe ) mg/L 0.2 0.16 0.21

9 Chloride ( as Cl ) mg/L 45 34 37

10 Residual Free Chlorine mg/L nil nil nil

11 Fluoride ( as F ) mg/L 0.12 0.15 0.24

12 Total Dissolved Solids mg/L 226 235 216

13 Calcium ( as Ca ) mg/L 31 49 43

14 Magnessium ( as Mg ) mg/L 19 15 8

15 Copper ( as Cu ) mg/L <0.05 <0.05 <0.05

16 Manganese ( as Mn ) mg/L <0.05 <0.05 <0.05

17 Sulphate ( as SO4 ) mg/L 4 6 4

18 Nitrate ( as NO3 ) mg/L 1.6 2 2.7

19 Phenol Compounds ( as

C6H5OH ) mg/L <0.001 <0.001 <0.001

20 Mercury ( as Hg ) mg/L <0.001 <0.001 <0.001

21 Cadmium ( as Cd ) mg/L <0.01 <0.01 <0.01

22 Arsenic ( as As ) mg/L <0.002 <0.002 <0.002

23 Cyanide ( as CN ) mg/L <0.05 <0.05 <0.05

24 Lead ( as Pb ) mg/L <0.05 <0.05 <0.05

25 Zinc ( as Zn ) mg/L 0.07 0.09 0.07

26 Hexavalent Chromium ( as

Cr+6 ) mg/L <0.05 <0.05 <0.05

27 Alkalinity ( as CaCO3 ) mg/L 132 138 135

28 Boron ( as B ) mg/L <0.02 <0.02 <0.02


ml absent absent absent


CODE LOCATION NAME

GW6 Borewell water (Near Sundarpur)

GW7 Tube well water (Near Silpukhuri)

GW8 Bore well water (Near IOCL Refinery)


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3.8 NOISE A total of Ten (10) locations within an area of 10 km radius around

the project site have been selected for measurement of ambient

noise levels. These locations have been displayed in Table-3.8.1.

3.8.1 Major Sources of Noise in the Study Area

The study area is of both industrial & residential in nature.

Vehicular movement on the roads is a source of noise in those

residential & industrial areas. This increases the ambient noise

levels. There are also a number of other domestic noise sources

such as television, radio, loud speakers, etc.

3.8.2 Ambient Noise Monitoring

In the present study, a sound level meter has measured sound

pressure levels. Since loudness of sound is important for its effects

on people, the dependence of loudness on frequency must be taken

into account in environmental noise assessment. This has been

achieved by using A-weighting filters in the noise measuring

instrument which gives a direct reading of approximate loudness.

Moreover, A-weighted equivalent continuous sound pressure level

(Leq) values have been computed from the values of A-weighted

sound pressure level (SPL) measured with the help of a noise

meter.

A preliminary reconnaissance survey was undertaken to identify the

major noise sources in the area. The sampling location in the area

was identified considering location of industry, commercial

shopping complex activities, residential areas with various traffic

activity and sensitive areas like hospital, court, temple, schools etc.

At each location, readings were taken at uniform interval over a

twenty-four hours period, divided into day and night shifts. For a

particular location daytime Leq has been computed from the SPL

values measured between 6.00 A.M to 10.00 P.M and night time Leq

from the SPL values measured between 10.00 P.M to 6.00 A.M,

such that comparison could be made with the National Ambient

Noise Standards.


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3.8.3 Noise Levels in the Study Area

The noise levels were monitored at 10 (Ten) locations. Monitoring

was done, covering both day and night time. Noise levels in Leq at

the respective locations separately for Day and Night times have

been presented in Table-3.8.1.

During the day time, the equivalent noise levels were found to vary

in the range of (55.8-68.2) dB (A) while in the night time, the

equivalent noise levels were observed to be varying in the range of

(46.5-58.4) dB (A). The variation of noise level in day & night time

is presented in Figure-3.8.1.

As usual, the day time noise levels were found to be higher than

those, observed at night level.

TABLE-3.8.1

EQUIVALENT NOISE LEVEL IN THE STUDY AREA, Leq in dB(A)

SL. NO.

LOCATIONS

EQUIVALENT NOISE

LEVEL, Leq in dB(A)

DAY NIGHT

1. Near IOCL Main Gate 66.1 58.4

2. Near India Carbon 68.2 57.4

3. Near NE Industries 65.9 58.4

4. Birkuchi Village 59.3 48.7

5. Jorabat Village 57.2 47.4

6. Noonmati Public School 58.2 47.3

7. Kanya Mahabidhyalaya 59.4 48.5

8. Near Refinery Hospital 55.8 46.5

9. Bamunimaidan 63.9 49.5

10. Gopalnagar Bazar 60.8 50.3

N.B. Day time is reckoned between 0600 HOURS TO 2200 HOURS

Night Time is reckoned between 2200 HOURS TO 0600 HOURS


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FIGURE-3.8.1

VARIATION OF NOISE LEVEL IN DAY & NIGHT TIME IN THE STUDY AREA


C3 - 52


3.9 ECOLOGY 3.9.1 INTRODUCTION

The concept of ecology has been increasingly used as conceptual focus

for conservation policy and to measure species extinction and

ecosystem loss in response to natural and human induced selection

pressures. Natural flora and fauna is an integral component of

ecosystem and is a good indicator of Environmental quality of the

habitat. Different communities present in it show different degree of

responses and sensitiveness to physical (biotic) influences. Therefore,

any environmental analysis where integration of ecological thoughts

into planning process is required, the analysis of biological status of

the area is very important to project possible deterioration in natural

environment on account of Industrial development in the area and

designing suitable management corrective action plan.

In addition to the field study, literature review/desk research was

carried out to determine the existing conditions within the study area

and to identify habitats and species of potential importance that may

be affected by the expansion project.

The following parameters were primarily considered in the study:

• To assess the nature and distribution of vegetation in and

around the project site within the 10 km radius study area;

• To assess the biodiversity of natural system present in the study

area;

• Identification of important plants/animal species having diverse

economic values;

• Identification of rare endangered plants and animal species (if

any)

• Collection of data from literature about the floral and faunal

accounts.

3.9.2 BIOLOGICAL ASPECT

The study on biological aspect is important for Environmental Impact

Assessment in view of conservation of environmental quality and

safety of natural flora and fauna. A biological community being

dependent on the condition and resources of its location may change


C3 - 53


if there is a little change in the ecosystem. Such a community change

is a reflection of changes in the plant and animal population that

comprises of the community. It is so because of the complex

interrelationships of a changing condition of resources, causes one or

more of the population to change or be replaced by others.

3.9.3 CLASSIFICATION OF RECORDED FOREST LAND

Reserved Forest: An area notified under the provisions of Indian

Forest Act, 1927 having full degree of protection. In Reserved Forests

all activities are prohibited unless specifically permitted (Sec.20 of

IFA, 1927).

Protected Forest: An area notified under the provisions of the Indian

Forest Act having limited degree of protection. In Protected Forest all

activities are permitted unless prohibited (Sec. 29 of IFA, 1927).

Unclassified State Forest: An area recorded as forest but not

included in Reserved or Protected forest category. Ownership status of

such forests varies from state to state.

TABLE-3.9.1

Forest Scenario in Assam

Recorded Forest Area

Reserve Forests 312 nos.

Total Reserve Forest Area 13,870 sq. km. (17.68% of

the state’s geographical area)

Proposed Reserve Forests 145 nos.

Total Area of Proposed Reserve Forests

3103 sq. km.

Unclassed State Forests 5865 sq.km.

National Parks and Sanctuaries 25 nos.

Total Area of National Parks and Sanctuaries

3925 sq. km. (5% of the state’s geographical area)

Total Recorded Forest Area 26,748 sq.km. (34.21% of the state’s geographical area)

Forest Cover (as per Forest

Survey of India’s Report, 2011)

27,673 sq. km. (35.28% of

the state’s geographical area)

Very Dense Forests 1,444 sq. km. (1.84%)


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Moderately Dense Forests 11,404 sq. km. (14.54%)

Open Forests 14,825 sq.km. (18.90%)

Different Forest Types in Assam

Tropical Wet Evergreen Forests 12.04%

Tropical Semi – Wet Evergreen Forests 51.71%

Tropical Moist Deciduous Forests 25.64%

Tropical Dry Deciduous Forests 0.09%

Subtropical Pine Forests 0.45%

Plantation / TOF 10.07%

(Source: Assam Forest Department)

3.9.4 DESCRIPTION OF THE STUDY AREA

Assam state is part of the North-East India biogeographic zone.

Favorable climate, topographic and edaphic factors support

luxuriant growth of diverse plant communities and create varied

habitats. The Tropical Wet Evergreen, Tropical Semi Evergreen,

Tropical Moist Deciduous, Tropical Dry Deciduous and subtropical

Pine forests as well as extensive network of river systems,

swamps, marshes and wetlands provide ideal conditions and

suitable habitats for sustenance & growth of a wide variety of

fauna be it mammals, primates, reptiles, amphibians, fish,

molluscs, birds, butterflies, moths, etc.

The project site i.e. IOCL Refinery is located in Guwahati city in

Kamrup district of Assam. In general the altitude of the area

ranges from 40 to 450 MSL. The rain fall in this area varies

between 1500-2400 mm. This topography and climatological

condition supports Tropical forests in this area. The Brahmaputra

River flows in East to West direction.

The primary data from the site survey as well as secondary data

from Forest department & published literatures have been

collected for inventorising the flora and fauna of the project

area.


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3.9.5 RECONNAISSANCE SURVEY

A reconnaissance survey was undertaken in 10 km radius study area

around the proposed project site. Through initial rapid extensive field

survey at the selected sampling locations, flora-fauna checklists were

prepared by the survey team members. The field study was

undertaken once during the study period (December, 2016 to

February, 2017).

3.9.6 METHODOLOGY OF ECOLOGICAL STUDY

Different methods which have been adopted for ecological study in the

study area are as follows:

• Inventorisation of flora/fauna: The list of flora and fauna found

in the region was prepared by conducting field survey and by

discussions with concerned Forest Department personnel using

the list available in the Working Plan as a base.

• Generation of primary data through systematic ecological

studies: The phyto-sociology of the vegetation (covering

frequency, density, abundance and species diversity) in the

forest areas falling in the study area was determined by

conducting field studies in selected areas (by laying suitable

sizes of Quadrat).

• Discussion with local people so as to elicit information about

local plant and animals.

The ecological status of the study area has been divided into mainly

two categories: Terrestrial Ecology and Aquatic Ecology.

3.9.7 Terrestrial Ecology

Terrestrial Ecology covers all the land based ecosystem component

analysis viz. forest and other vegetation covers, flora and fauna

resources, agriculture and livestock status, etc. An understanding of

biodiversity of an area is very significant for environmental impact

assessment related to any project.

Natural Flora and Fauna are key features of an environment since they

form of distinctive community having mutual dependences among

their 3 types of bio-diversity, i.e., genetic diversity, species diversity


C3 - 56


and ecological diversity and so diverse degree of response and

sensitivities to physical influences.

3.9.7.1 Floral Diversity

Guwahati is situated in district Kamrup which has 1432 sq. km of

forest area, comprising of:

• 69 sq.km of very dense forest,

• 609 sq.km of moderately dense forest &

• 754 sq. km of open forest.

The forest in this region comprises of Tropical Moist Deciduous type

forests. This forest is further divided into Sal forest and Mixed

Deciduous forest. In these forests, Sal grows in association with Ajar

(Lagerstroemia speciosa), Ghugra (Schima wallichii), Paruli

(Stereospermum personatum), Haldu (Adina cordifolia), Sam

(Artocarpus sp.), Bor (Ficus sp.), Uraim (Bischofia javanica), Gomari

(Gmelina arborea), Teeta champa (Michelia champaca), Poma

(Toona ciliata).

Vegetation of a particular area depends upon the interaction of various

natural factors including plants, animals, microorganisms of that

particular area in which they grown, live and influence one another.

Natural tree species was analyzed and calculated by Quadrat method

at different places in the study area like just beside of the project site,

roadside land, domestic land, small patchy area, etc.

A checklist of natural tree species has been given in Table-3.9.2 and

composite Quadrat analysis & Biodiversity Index of those species have

been calculated and tabulated in Table-3.9.3 and Table-3.9.4.

There are also several natural species of ferns, shrubs, herbs and

climbers observed within the study area. A checklist of these species

of ferns, shrubs has been shown in Table-3.9.5 and Table-3.9.6. A

checklist of these species of herbs and climbers has been shown in

Table-3.9.7.

The following survey was undertaken in the study area during field

trips:


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(I) Forest/Vegetation composition analysis: Recording and its

detail phyto-sociological analysis was done by the following

quadrat (10m x 10m) method.

The following parameters were primarily considered in the

study and computed in the following way:

(i) Frequency: The degree of dispersion of individual species in an

area is called frequency. It is express as percentage occurrence.

(ii) Abundance: This is the study of number of individual of

different species in community per unit area.

(iii) Relative Abundance: It is the determination of the percentage

of individual of one genera in composition to the total of all

individual as a given area.

(iv) Density: It is the numerical strength of a species.

(II) Species Diversity Index: species diversity in a biological

community is based on presence of a wide variety of species.

It is in expressed by Shannon-Weiner Index (1948) in the

following way:

Number of quadrates in which a species occurs Frequency (f) = --------------------------------------------------------------- x100 Total number of quadrates sampled

Total No. of individuals of a species in all quadrate Abundance (A) = -------------------------------------------------------------------

Total number of quadrates in which the species occurs

Total No. of individuals species in the sample

Relative Abundance (A) = --------------------------------------------------------- Number of quadrat in which a species occurs

Total No. of individuals of a species in all quadrates Density (D) = ----------------------------------------------------------------- Total No. of quadrat sampled


C3 - 58


s

H = ∑-(Pi×lnPi)

i = 1

Where,

H = Species diversity index S = the number of species in a sample

Pi = (ni/N)

N = the total number of individuals of all the species in a sample ni = the number of individuals of a species.


C3 - 59


Table - 3.9.2 CHECKLIST OF COMMON TREE SPECIES OF THE STUDY AREA

Sr. No. Scientific Name Common Name

1 Adina cordifolia Taveaksopa

2 Aegle marmelos Bel

3 Alangium chinense Kodalkonia

4 Albizia lucida Hoj

5 Albizia odoratissima Chamkorai Heharu

6 Alstonia scholaris Sotiana

7 Anthocephalus chinensis Kodam

8 Artocarpus chama Chamkathal

9 Artocarpus integrifolia Kathal

10 Acacia auriculiformis Akasmani

11 Acacia catechu Khair

12 Adansonia digitata Baobab

13 Adenanthera pavonina Kuchandana

14 Acrocarpus fraxinifolius Mandhani

15 Acrocarpus integrifolia Borpat

16 Acrocarpus procera Korai

17 Anona squamosa Custard apple

18 Azadirachta indica Neem

19 Bauhinia purpurea Kanchan

20 Bridelia retusa Kohir

21 Bauhinia malabarica Tenga kotra

22 Barringtonia acutangula Hijal

23 Bombax malabarica Simalu

24 Carallia lucida Mohi thekara

25 Callicarpa arborea Maskiita

26 Casearia glomerata Telbhurukia

27 Cassia fistula Sonam

28 Celtis timorensis Mahila

29 Cordia dichotoma Ghap akharea

30 Craetera religiosa Barun

31 Croton oblongifolius Makhunda

32 Callistemon linearis Bottle brush

33 Canarium bengalensis Dhuna

34 Canarium strictum Dhuna

35 Cassia javanica Malayan cassia

36 Chrysophylluss lanceolatum Bon pitha

37 Celba pentandra White silk cotton

38 Cinnnamomum camophora Karpur

39 Cordia sebestina Lolu


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40 Crescentia cujete Bilatibel

41 Caesalpinia pulcherina Radhasurea

42 Dalbergia sissoo Sisu

43 Derris robusta Kothriakorai

44 Dillenia indica Outenga

45 Dillenia scabrella Banjole

46 Diospyros variegata Koliori

47 Dysoxylum binectariferum Bandardima

48 Dalbergia latifolia Rose wood

49 Dipterocarpus retusus Holang

50 Ehretia acuninata Gual

51 Erythrina stricta Modre

52 Eugenia balsamea Goolhajam

53 Elaeocarpus floribundus Jalpai

54 E. ganitrus Rudrakesha

55 Eucalyptus tereticornis Red gum

56 E. globules Blue gum

57 E. citriodora Lemon scented

Eucalyptus 58 Exbucklandia populnea Dieng dok

59 Ficus bengalensis Bot

60 F. benjamina Joribor

61 F elastica Athabor, Indian rubber 62 F. hispida Dimoru

63 F. religiosa Ahat

64 F. cunia Kongroy

65 Flacourtia jongomus Poniyal

66 Garcinia cowa Kuji thekera

67 G. pedunculata Bor thekera

68 G. xanthochymus Tepon tenga

69 Gliricidea sepium Madera

70 Garuga pinnata Rohini

71 Glochidion lancedarum Armlochan

72 Glochiolion sphaerogynum Bob Jagru

73 Gmelina arborea Gamari

74 Haplophrajma adenophyllum Dhopaparuli

75 Holarrhena antidysentrica Dudh khori

76 Hymenodictyon excelsum Bhuokhunoli Panikadam 77 Kydia calycina Pichhola

78 L. speciosa Ajhave

79 L. indica Parul

80 Lannea grandis Jiya

81 Litsea citrata Mejankeri

82 Mansonia dipikii Jati badam


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83 Magnolia griffithii Gahori sopa

84 Machilus bombycina Som

85 Manilkara hexandra Oubard

86 Mesua ferrea Nahae

87 Melia azedarch Ghoranim

88 Memelylon cerasiforma Kakoi chera

89 Michelia champaca Tita sopa

90 M. oblonga Phul sopa

91 M. montana Phulsopa

92 Mimusops elongi Bakul

93 Morus macroura Bola

94 Moringa oleifera Sajina

95 Myristica kingii Amol

96 Mallotus ferrugineus Larubandha

97 Mangifera indica Am

98 Micromelum minutum Sagladi

99 Nyctanthes arbortristis Sewali

100 Oroxylum indicum Bhatghila

101 Premha latifolia Gonara

102 Palaquium polyanthum Kurta

103 Pongamia pinrata Tamsica

104 Phoebe goalparensis Bonscn

105 Polyalthia longifolia Debdaru

106 P. pendula Pendulum tree

107 Psidium guajara Madhuriam

108 Putrajiva roxburghii Putranjibi

109 Phyllanthus emblica Amlakhi

110 Sapium baccatum Cheleng

111 Semecarpus anacardium Bhela

112 Syzygium cumini Kalajam

113 Saraca indica Ashok

114 Salix babylonica Weeping willow

115 Shorea robusta Sal

116 Spathodea campanulata Fountain tree

117 Spondius pinnata Amorea

118 Swietenia macrophylla Mahogeni

119 S. mahagoni Mahogeni

120 Santalum album Chanolan

121 Talauma hodgsonii Bovehamthuri

122 Tectona grandis Segun

123 Terminalia chebula Silikka

124 T Arjuna Arjun

125 T. belerica Bhoora


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126 T myriocarpa Holok

127 Trewia nudiflora Bhelkor

TABLE - 3.9.3

QUANTITATIVE ASSESSMENT (BY QUADRAT METHOD) OF TREE SPECIES IN THE STUDY AREA

(Note: Each column of Quadrat Number represents 1 Quadrat of 10m × 10m Size)

Sl. No.

Name of Trees Quadrat No. Total Frequency Density Abundance

1 2 3 4 5 6 7 8 9 10

1 Adina cordifolia 1 1 2 4 30 0.4 133.33

2 Aegle marmelos 1 1 1 3 30 0.3 100.00

3 Alangium chinense 2 1 3 20 0.3 150.00

4 Albizia lucida 1 3 4 20 0.4 200.00

5 Albizia odoratissima 1 1 2 1 5 20 0.5 250.00

6 Alstonia scholaris 1 1 2 20 0.2 100.00

7 Anthocephalus chinensis 2

2 10 0.2

200.00

8 Artocarpus chama 1 1 2 4 30 0.4 133.33

9 Artocarpus integrifolia 1 3

4 20 0.4

200.00

10 Acacia auriculiformis 2 2 1 5 30 0.5 166.67

11 Acacia catechu 1 2 3 20 0.3 150.00

12 Adansonia digitata 2 1 1 4 30 0.4 133.33

13 Adenanthera pavonina 1

1 10 0.1

100.00

14 Acrocarpus fraxinifolius 2

2 10 0.2

200.00

15 Acrocarpus integrifolia 1 2 1

4 30 0.4

133.33

16 Acrocarpus procera 1 1 10 0.1 100.00

17 Anona squamosa 1 2 3 20 0.3 150.00

18 Azadirachta indica 2 2 10 0.2 200.00

19 Bauhinia purpurea 1 3 4 20 0.4 200.00

20 Bridelia retusa 1 1 2 20 0.2 100.00

21 Bauhinia malabarica 2 2 10 0.2 200.00

22 Barringtonia acutangula 2 2

4 20 0.4

200.00

23 Bombax malabarica 1 1 1 3 30 0.3 100.00

24 Carallia lucida 2 2 10 0.2 200.00

25 Callicarpa arborea 1 1 2 20 0.2 100.00

26 Casearia glomerata 1 1 2 4 30 0.4 133.33

27 Cassia fistula 2 2 10 0.2 200.00

28 Celtis timorensis 1 1 10 0.1 100.00

29 Cordia dichotoma 2 1 3 20 0.3 150.00

30 Craetera religiosa 1 1 10 0.1 100.00

31 Croton oblongifolius 1 1 10 0.1 100.00

32 Callistemon linearis 1 1 2 20 0.2 100.00

33 Canarium bengalensis 1

1 10 0.1

100.00

34 Canarium strictum 1 1 2 20 0.2 100.00


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35 Cassia javanica 2 2 10 0.2 200.00

36 Chrysophylluss lanceolatum

1

1 10

0.1

100.00

37 Celba pentandra 1 1 2 4 30 0.4 133.33

38 Cinnnamomum camophora

2 3

5 20

0.5

250.00

39 Cordia sebestina 1 2 3 20 0.3 150.00

40 Crescentia cujete 1 1 10 0.1 100.00

41 Caesalpinia pulcherina 1 1

2 20 0.2

100.00

42 Dalbergia sissoo 1 1 1 3 30 0.3 100.00

43 Derris robusta 2 2 10 0.2 200.00

44 Dillenia indica 1 2 3 20 0.3 150.00

45 Dillenia scabrella 1 1 10 0.1 100.00

46 Diospyros variegata 2 3 5 20 0.5 250.00

47 Dysoxylum binectariferum 1

1 10 0.1

100.00

48 Dalbergia latifolia 1 1 10 0.1 100.00

49 Dipterocarpus retusus 1 1 10 0.1 100.00

50 Ehretia acuninata 3 3 10 0.3 300.00

51 Erythrina stricta 2 1 1 4 30 0.4 133.33

52 Eugenia balsamea 2 2 10 0.2 200.00

53 Elaeocarpus floribundus 1 1

2 20 0.2

100.00

54 E. ganitrus 2 2 4 20 0.4 200.00

55 Eucalyptus tereticornis 2 1

3 20 0.3

150.00

56 E. globules 2 2 10 0.2 200.00

57 E. citriodora 2 2 10 0.2 200.00

58 Exbucklandia populnea 2 2

4 20 0.4

200.00

59 Ficus bengalensis 1 1 10 0.1 100.00

60 F. benjamina 1 2 3 20 0.3 150.00

61 F elastica 1 1 1 3 30 0.3 100.00

62 F. hispida 2 1 1 4 30 0.4 133.33

63 F. religiosa 1 1 1 1 4 40 0.4 100.00

64 F. cunia 1 2 1 4 30 0.4 133.33

65 Flacourtia jongomus 2 1 1 4 30 0.4 133.33

66 Garcinia cowa 2 2 10 0.2 200.00

67 G. pedunculata 1 1 2 4 30 0.4 133.33

68 G. xanthochymus 1 1 1 1 4 40 0.4 100.00

69 Gliricidea sepium 1 1 1 3 30 0.3 100.00

70 Garuga pinnata 2 2 2 1 7 40 0.7 175.00

71 Glochidion lancedarum 1 1 1 3 30 0.3 100.00

72 Glochiolion sphaerogynum 1 1 2 4 30

0.4

133.33

73 Gmelina arborea 2 1 1 4 30 0.4 133.33

74 Haplophrajma adenophyllum 1 1 2 4 30

0.4

133.33

75 Holarrhena antidysentrica 1 2 2 1 6 40 0.6

150.00

76 Hymenodictyon excelsum 1 2 1 4 30 0.4

133.33


C3 - 64


77 Kydia calycina 1 2 3 20 0.3 150.00

78 L. speciosa 1 1 1 3 30 0.3 100.00

79 L. indica 1 2 1 1 5 40 0.5 125.00

80 Lannea grandis 3 2 1 4 10 40 1 250.00

81 Litsea citrata 2 2 10 0.2 200.00

82 Mansonia dipikii 2 3 5 20 0.5 250.00

83 Magnolia griffithii 1 1 1 3 30 0.3 100.00

84 Machilus bombycina 1 1 1 3 30 0.3 100.00

85 Manilkara hexandra 1 1 1 3 20 0.3 150.00

86 Mesua ferrea 1 1 1 3 30 0.3 100.00

87 Melia azedarch 2 1 1 1 5 40 0.5 125.00

88 Memelylon cerasiforma 2 1 1 4 30 0.4

133.33

89 Michelia champaca 1 3 1 5 30 0.5 166.67

90 M. oblonga 1 1 2 3 7 40 0.7 175.00

91 M. montana 2 2 10 0.2 200.00

92 Mimusops elongi 1 3 2 6 30 0.6 200.00

93 Morus macroura 2 3 1 2 8 40 0.8 200.00

94 Moringa oleifera 2 2 1 1 3 9 50 0.9

180.00

95 Myristica kingii 2 4 2 8 30 0.8 266.67

96 Mallotus ferrugineus 2 1 1 2 3 9 50 0.9 180.00

97 Mangifera indica 2 3 2 1 2 10 50 1.0

200.00

98 Micromelum minutum 1 1 1 3 30 0.3 100.00

99 Nyctanthes arbortristis 1 1 3 2 7 40 0.7

175.00

100 Oroxylum indicum 1 1 2 20 0.2 100.00

101 Premha latifolia 1 1 1 2 5 40 0.5 125.00

102 Palaquium polyanthum 2 2 1 2 1 8 50 0.8

160.00

103 Pongamia pinrata 1 3 2 2 1 9 50 0.9 180.00

104 Phoebe goalparensis 1 1 1 3 20 0.3 150.00

105 Polyalthia longifolia 1 1 1 3 30 0.3 100.00

106 P. pendula 2 1 2 2 7 40 0.7 175.00

107 Psidium guajara 1 1 2 30 0.2 66.67

108 Putrajiva roxburghii 1 1 1 3 30 0.3 100.00

109 Phyllanthus emblica 1 1 1 1 4 40 0.4 100.00

110 Sapium baccatum 1 1 2 20 0.2 100.00

111 Semecarpus anacardium 2 1 1 1 5 40 0.5

125.00

112 Syzygium cumini 2 1 1 4 30 0.4 133.33

113 Saraca indica 1 1 1 1 2 6 30 0.6 200.00

114 Salix babylonica 1 1 10 0.1 100.00

115 Shorea robusta 2 1 3 20 0.3 150.00

116 Spathodea campanulata 1 2 3 20 0.3 150.00

117 Spondius pinnata 2 1 3 20 0.3 150.00

118 Swietenia macrophylla 1 2 3 20 0.3 150.00

119 S. mahagoni 1 1 10 0.1 100.00

120 Santalum album 1 1 2 20 0.2 100.00

121 Talauma hodgsonii 1 1 1 2 3 8 50 0.8 160.00


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122 Tectona grandis 2 1 3 10 0.3 300.00

123 Terminalia chebula 1 3 2 6 30 0.6 200.00

124 T Arjuna 3 1 2 1 7 40 0.7 175.00

125 T. belerica 2 1 2 2 7 40 0.7 175.00

126 T myriocarpa 2 1 3 6 30 0.6 200.00

127 Trewia nudiflora 2 1 1 1 2 3 10 60 1.0 166.67

Total 50 54 48 48 36 41 52 44 49 48 470 3150 47 19060

Table – 3.9.4. Biodiversity Index of Tree Species

Sl. No.

Name of Trees Total

No. (ni) Abundance

(N) Pi=(ni/N)

Shannon

Index

(Pi x lnPi)

1 Adina cordifolia 4 133.33 0.03 0.11

2 Aegle marmelos 3 100.00 0.03 0.11

3 Alangium chinense 3 150.00 0.02 0.08

4 Albizia lucida 4 200.00 0.02 0.08

5 Albizia odoratissima 5 250.00 0.02 0.08

6 Alstonia scholaris 2 100.00 0.02 0.08

7 Anthocephalus chinensis 2 200.00 0.01 0.05

8 Artocarpus chama 4 133.33 0.03 0.11

9 Artocarpus integrifolia 4 200.00 0.02 0.08

10 Acacia auriculiformis 5 166.67 0.03 0.11

11 Acacia catechu 3 150.00 0.02 0.08

12 Adansonia digitata 4 133.33 0.03 0.11

13 Adenanthera pavonina 1 100.00 0.01 0.05

14 Acrocarpus fraxinifolius 2 200.00 0.01 0.05

15 Acrocarpus integrifolia 4 133.33 0.03 0.11

16 Acrocarpus procera 1 100.00 0.01 0.05

17 Anona squamosa 3 150.00 0.02 0.08

18 Azadirachta indica 2 200.00 0.01 0.05

19 Bauhinia purpurea 4 200.00 0.02 0.08

20 Bridelia retusa 2 100.00 0.02 0.08

21 Bauhinia malabarica 2 200.00 0.01 0.05

22 Barringtonia acutangula 4 200.00 0.02 0.08

23 Bombax malabarica 3 100.00 0.03 0.11

24 Carallia lucida 2 200.00 0.01 0.05

25 Callicarpa arborea 2 100.00 0.02 0.08

26 Casearia glomerata 4 133.33 0.03 0.11

27 Cassia fistula 2 200.00 0.01 0.05

28 Celtis timorensis 1 100.00 0.01 0.05

29 Cordia dichotoma 3 150.00 0.02 0.08

30 Craetera religiosa 1 100.00 0.01 0.05

31 Croton oblongifolius 1 100.00 0.01 0.05


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32 Callistemon linearis 2 100.00 0.02 0.08

33 Canarium bengalensis 1 100.00 0.01 0.05

34 Canarium strictum 2 100.00 0.02 0.08

35 Cassia javanica 2 200.00 0.01 0.05

36 Chrysophylluss lanceolatum 1 100.00 0.01 0.05

37 Celba pentandra 4 133.33 0.03 0.11

38 Cinnnamomum camophora 5 250.00 0.02 0.08

39 Cordia sebestina 3 150.00 0.02 0.08

40 Crescentia cujete 1 100.00 0.01 0.05

41 Caesalpinia pulcherina 2 100.00 0.02 0.08

42 Dalbergia sissoo 3 100.00 0.03 0.11

43 Derris robusta 2 200.00 0.01 0.05

44 Dillenia indica 3 150.00 0.02 0.08

45 Dillenia scabrella 1 100.00 0.01 0.05

46 Diospyros variegata 5 250.00 0.02 0.08

47 Dysoxylum binectariferum 1 100.00 0.01 0.05

48 Dalbergia latifolia 1 100.00 0.01 0.05

49 Dipterocarpus retusus 1 100.00 0.01 0.05

50 Ehretia acuninata 3 300.00 0.01 0.05

51 Erythrina stricta 4 133.33 0.03 0.11

52 Eugenia balsamea 2 200.00 0.01 0.05

53 Elaeocarpus floribundus 2 100.00 0.02 0.08

54 E. ganitrus 4 200.00 0.02 0.08

55 Eucalyptus tereticornis 3 150.00 0.02 0.08

56 E. globules 2 200.00 0.01 0.05

57 E. citriodora 2 200.00 0.01 0.05

58 Exbucklandia populnea 4 200.00 0.02 0.08

59 Ficus bengalensis 1 100.00 0.01 0.05

60 F. benjamina 3 150.00 0.02 0.08

61 F elastica 3 100.00 0.03 0.11

62 F. hispida 4 133.33 0.03 0.11

63 F. religiosa 4 100.00 0.04 0.13

64 F. cunia 4 133.33 0.03 0.11

65 Flacourtia jongomus 4 133.33 0.03 0.11

66 Garcinia cowa 2 200.00 0.01 0.05

67 G. pedunculata 4 133.33 0.03 0.11

68 G. xanthochymus 4 100.00 0.04 0.13

69 Gliricidea sepium 3 100.00 0.03 0.11

70 Garuga pinnata 7 175.00 0.04 0.13

71 Glochidion lancedarum 3 100.00 0.03 0.11

72 Glochiolion sphaerogynum 4 133.33 0.03 0.11

73 Gmelina arborea 4 133.33 0.03 0.11


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74 Haplophrajma adenophyllum 4 133.33 0.03 0.11

75 Holarrhena antidysentrica 6 150.00 0.04 0.13

76 Hymenodictyon excelsum 4 133.33 0.03 0.11

77 Kydia calycina 3 150.00 0.02 0.08

78 L. speciosa 3 100.00 0.03 0.11

79 L. indica 5 125.00 0.04 0.13

80 Lannea grandis 10 250.00 0.04 0.13

81 Litsea citrata 2 200.00 0.01 0.05

82 Mansonia dipikii 5 250.00 0.02 0.08

83 Magnolia griffithii 3 100.00 0.03 0.11

84 Machilus bombycina 3 100.00 0.03 0.11

85 Manilkara hexandra 3 150.00 0.02 0.08

86 Mesua ferrea 3 100.00 0.03 0.11

87 Melia azedarch 5 125.00 0.04 0.13

88 Memelylon cerasiforma 4 133.33 0.03 0.11

89 Michelia champaca 5 166.67 0.03 0.11

90 M. oblonga 7 175.00 0.04 0.13

91 M. montana 2 200.00 0.01 0.05

92 Mimusops elongi 6 200.00 0.03 0.11

93 Morus macroura 8 200.00 0.04 0.13

94 Moringa oleifera 9 180.00 0.05 0.15

95 Myristica kingii 8 266.67 0.03 0.11

96 Mallotus ferrugineus 9 180.00 0.05 0.15

97 Mangifera indica 10 200.00 0.05 0.15

98 Micromelum minutum 3 100.00 0.03 0.11

99 Nyctanthes arbortristis 7 175.00 0.04 0.13

100 Oroxylum indicum 2 100.00 0.02 0.08

101 Premha latifolia 5 125.00 0.04 0.13

102 Palaquium polyanthum 8 160.00 0.05 0.15

103 Pongamia pinrata 9 180.00 0.05 0.15

104 Phoebe goalparensis 3 150.00 0.02 0.08

105 Polyalthia longifolia 3 100.00 0.03 0.11

106 P. pendula 7 175.00 0.04 0.13

107 Psidium guajara 2 66.67 0.03 0.11

108 Putrajiva roxburghii 3 100.00 0.03 0.11

109 Phyllanthus emblica 4 100.00 0.04 0.13

110 Sapium baccatum 2 100.00 0.02 0.08

111 Semecarpus anacardium 5 125.00 0.04 0.13

112 Syzygium cumini 4 133.33 0.03 0.11

113 Saraca indica 6 200.00 0.03 0.11

114 Salix babylonica 1 100.00 0.01 0.05

115 Shorea robusta 3 150.00 0.02 0.08

116 Spathodea campanulata 3 150.00 0.02 0.08

117 Spondius pinnata 3 150.00 0.02 0.08


C3 - 68


118 Swietenia macrophylla 3 150.00 0.02 0.08

119 S. mahagoni 1 100.00 0.01 0.05

120 Santalum album 2 100.00 0.02 0.08

121 Talauma hodgsonii 8 160.00 0.05 0.15

122 Tectona grandis 3 300.00 0.01 0.05

123 Terminalia chebula 6 200.00 0.03 0.11

124 T Arjuna 7 175.00 0.04 0.13

125 T. belerica 7 175.00 0.04 0.13

126 T myriocarpa 6 200.00 0.03 0.11

127 Trewia nudiflora 10 166.67 0.06 0.17

Total 470 19060 3.15 11.29

BIODIVERSITY INDEX:

Shannon – Weiner Index = 11.29

TABLE - 3.9.5 CHECKLIST OF FERNS IN THE STUDY AREA

Sr. No. Scientific Name Habit

1 Adiantum caudatum Fern

2 Adiantum philippense Fern

3 Angiopleris evecta Fern

4 Asplenium nidus Fern

5 Azolla pinnata Fern

6 Cyclosorus extensum Fern 7 Diplazium esculentum Fern 8 Drynaria quercifolia Fern 9 Drynaria sp. Fern 10 Gymnogramme pulchellus Fern 11 Hemionites aurifolia Fern

TABLE - 3.9.6 CHECKLIST OF SHURBS IN THE STUDY AREA


1 Aerva sanguinolenta Shrub

2 Agave americana Shrub

3 Aloe barbadensis Shrub

4 Argemone mexicana Shrub

5 Bougainvillea spectabilis Shrub

6 Calensuo sp. Shrub

7 Canna indica Shrub

8 Cannabis sativa Shrub


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9 Catharanthus roseus Shrub

10 Datura stramonium Shrub

11 Dracaena sp. Shrub

12 Duranta repens Shrub

13 Ixora arborea Shrub

14 Ixora coccinea Shrub

15 Senna sophera Shrub

16 Senna tora Shrub

TABLE - 3.9.7 CHECKLIST OF HERBS, CLIMBERS IN THE STUDY AREA


1. Desmodium triflorum Herb

2. Abrus precatorius Herb

3. Abutilon indicum Herb

4. Acalypha indica Herb

5. Achyranthes aspera Herb

6. Ageratum conyzoides Herb

7. Ageratum conyzoides L. Herb

8. Alocasia cucullata Herb

9. Alocasia indica Herb

10. Alternanthera philoxeroides Herb

11. Alternanthera sessilis Herb

12. Amaranthus spinosus Herb

13. Amaranthus variegata Herb

14. Amaranthus viridis Herb

15. Amorphophallus campanulatus Herb

16. Andropogon ascinodis Grass

17. Axonopus compressus Grass

18. Bambusa sp. Herb

19. Basella alba Climber

20. Boerhavia diffusa Herb

21. Boerhavia repens Herb

22. Borreria articularis Herb

23. Bryophyllum pinnatum Herb

24. Cardiospermum halicacabum Climber

25. Carex sp. Grass

26. Celosia cristata Herb

27. Centella asiatica Herb

28. Chenopodium album Herb

29. Chrysopogon aciculatus Herb

30. Cleome gynandra Herb

31. Cleome rutidosperma Herb


C3 - 70


32. Cleome viscosa Herb

33. Clerodendrum viscosum Herb

34. Clitoria ternatea Climber

35. Coccinia grandis Climber

36. Colocasia esculenta Herb

37. Commelina benghalensis Herb

38. Commelina diffusa Herb

39. Crinum asiaticum Herb

40. Chrysopogon aciculatus Grass

41. Curcuma aromatica Herb

42. Cuscuta reflexa Climber

43. Cynodon dactylon Herb

44. Cyperus brevifolius Herb

45. Cyperus brevifolius Herb

46. Cyperus compressus Herb

47. Cyperus distans Herb

48. Cyperus iria Herb

49. Dendrocalamus hamiltonii Herb

50. Desmodium triphylla Herb

51. Digitaria satigera Grass

52. Dioscorea alata Climber

53. Drymaria cordata Herb

54. Duranta repens Herb

55. Eclipta prostrata Herb

56. Elephantopus scaber Herb

57. Eleusine indica Herb

58. Euphorbia hirta Herb

59. Euphorbia neriifolia Herb

60. Evolvulus nummularius Herb

61. Foeniculum vulgare Herb

62. Geodorum sp. Orchid

63. Gloriosa superba Climber

64. Hedyotis scandens Herb

65. Imperata cylindrica Herb

66. Ipomoea fistulosa Herb

67. Ipomoea aquatica Climber

68. Ipomoea cairica Climber

69. Ipomoea quamoclit Climber

Major parts of the study area includes the human settlement of

the Guwahati city, however the Aamchung sanctuary and the

Reserve forest and Brahamputra river forms the part of the

study area. The areas of Guwahati which come under 10 km

radius of the refinery are Chandmari, Kamakhya, Khanapara,

Hengerbarui, Ganeshguri, etc. Table 3.9.8: Analysis of the flora of the study area


C3 - 71


Sl. No. Habitat No. of Species 1. Trees 127 2. Shrubs 16

3. Herbs 58 4. Climbers 10

5. Orchid 1 6. Ferns 11

Total 223

3.9.8 TERRESTRIAL FAUNA

Most of the study area is covered by agricultural land interspersed

with fallow land and barren land. There is fairly dense forest in NW

direction of the proposed plant site beyond Kasai River.

The large number of trees in the study area makes a suitable

habitat for birds. Although there is a forest in the study area, wild

life is sparse.

During the present investigation, species were examined including

mammals, birds, reptiles and amphibians. A total of 24 species of

mammals, 67 species of birds, 20 species of reptiles and 16 species

of fish were observed during the study and have been presented in

Table-3.9.9 (A-C).

TABLE-3.9.9

CHECKLIST OF FAUNAL SPECIES IN THE STUDY AREA A. MAMMALS:

Sr. No. Common Name Scientific Name Status

1 Wild Boar Sus scrofa LC

2 Leopard Cat Prionailurus bengalensis S-I/LC

3 Jungle Cat Felis chaus LC

4 Asiatic Jackal Canis aureus LC

5 Bengal Fox Vulpes bengalensis LC

6 Small Indian Civet Viverricula indica LC

7 Common Palm Civet Paradoxurus hermaphrodites LC

8 Indian Grey Mongoose Herpestes edwardsii LC

9 Small Asian Mongoose Herpestes javanicus LC


C3 - 72


10 Rhesus Macaque Macaca mulatto LC

11 Assam Macaque Macaca assamensis NT

12 Capped Langur Trachypithecus pileatus S-I/VU

13 Bengal Slow Loris Nycticebus bengalensis VU

14 Chinese Pangolin Manis pentadactyla S-I/EN

15 Indian Palm Squirrel Funambulus palmarum LC

16 Porcupine Hystrix brachyuran LC

17 Lesser Bandicoot Rat Bandicota bengalensis LC

18 Hoary Bamboo Rat Rhizomys pruinosus LC

19 Indian flying Fox Pteropus giganteus LC

20 Short nosed Indian fruit Bat Cynopterus sphinx LC

21 Least horseshoe Bat Rhinolophus pusiilus LC

22 Lesser Asiatic yellow Bat Scotophilus kuhlii LC

23 Asian House Shrew Suncus murinus LC

24 Mole Shrew Anourosorex squamipes LC

S-I- Schedule-I of WPA- 1972; EN- Endangered; VU- Vulnerable; NT- Near Threatened; LC-Least Concern in IUCN red list

B. REPTILES:

Sl.

No.

Local Name Zoological Name Status

1. Tree frog Polypedates leucomystax LC

2. Ornamented Pygmy Frog

Microhyla ornate LC

3. Indian bull frog Hoplobatrachus tigerinus LC

4. Common Pond Frog Fejervarya limnocharis LC

5. Assam Hills Frog Clinotarsus alticola LC

6. Water frog Hylarana garoensis LC

8. Common Rat Snake Ptyas mucosus LC

9. North-eastern Kukri Snake

Oligodon cyclurus LC

10. Rat Snake Coelognathus radiatus LC

11. Golden Tree Snake Chrysopelea ornata LC

12. Banded Krait Bungurus fasciatus LR/ NT

13. House Gecko Hemidactylus frenatus LC

14. Indian Garden Lizard Calotes versicolor LR/ NT

15. Asiatic Rock Python Python molurus LC

16. Indian Roofed Turtle Pangshura tecta LR/LC

17. South Asian Box Turtle

Cuora amboinensis LC

18. Indian Soft Shell

Turtle

Nilssonia gangetica LC

19. Peacock soft shell

Turtle

Nilssonia hurum LC


C3 - 73


20. Indian Flap-shell Turtle

Lissemys punctata LC

C. Birds:

Sr.

No.

Scientific Name Common Name

1. Podiceps ruficollis Little grebe

2. Phalacrocorax niger Little cormorant

3. Ardea cineria Grey Heron

4. A grayii Pond Heron

5. Egretta intermedia Smaller egret

6. E garzetta Little egret

8. Leptoptilos dubius Stork

9. L. javanivus Lesser adjutant stork

10. Dendrocygna bicolor Large whistling teal

11. Anas acuta Pintail

12. A crecca Common teal

13. Milvus migrans goviorda Pariah kite

14. G bengalensis While backed vulture

15. C. melanoleucus Pied Harrier

16. Spilornis cheela Crested Serpent eagle

17. Fulica atra Coot

18. Hydrophasianus chirurgus Pheasant tailed jacana

19. Metopidius indicus Bronze winged jacana

20. Rostratula benghalensis Painted snipe

21. V cinereus Grey headed lapwing

22. V indicus Red wattle lapwing

23. Charadrius dubius Little ringed plover

24. Tringa hypoleucos Common Sand piper

25. Gallinago gallinago Fantailed snipe

26. S chinensis Spotted dove

27. C. canorus The cuckoo

28. Eudynamys scolopacea Koel

29. Athene brama Spotted owlet

30. Caprimulgus macrurus Common Indian night jar

31. Allcedo atthis Common kingfisher

32. Upupa epops Hoopoe

33. Megalamea lineate Lineated Barbet

34. M. heemacephala Copper smith

35. Picoides atreatus Pied wood pecker

36. Lanius excubitor Grey shrike

37. L. cristatus Brown shrike


C3 - 74


38. Oriolus xanthornus Black headed oriole

39. Sturnus malabaricus Grey headed Myna

40. S. contra Pied Myna

41. Acridotheres tristis Common Myna

42. A. ginginianus Bank Myna

43. A. fuscus Jungle Myna

44. Corvus splendens House crow

45. C. macrorhynchos Jungle crow

46. Tephrodornis pondiecerianus Common wood shrike

47. Chloropsis auriffons Leaf bird

48. Pycnonotus cafer Red vented bulbul

49. Turdoides striatus Jungle babbler

50. Muscicapa parvalbicilla Red breasted fly catcher

51. Orthotomus sutorius Tailor bird

52. Copsychus saularis Magpie robin

53. Anthus trivialis Tree pipet

54. Motacilba alba dukhunensis Pied wagtail

55. Motacilla cineria Grey wagtail

56. Nectarinia asiatia Purple sunbird

57. Zosterpos pappebrosa White eye

58. Passer domesticus House sparrow

59. Aredea insignis Great white bellied heron

60. Egretta gularis Reef Heron

61. Aquila rapose nepalensis Eastern steppe eagle

62. Aquila clanga Greater spotted eagle

63. Bubo nepalensis Forest eagle-owl

64. Raparia riparia Collard sand martin

65. Raparia paludicola Plain sand martin

66. Hirundo obsolete Pale crag martin

67. Delichon nipalensis Nepal house martin

3.9.9 Fish The species of fish found in the study area has been shown in Table

3.9.10.


C3 - 75


Table 3.9.10.

Checklist of Fish species

Sl.

No.

Scientific Name

1 Catla catla

2 Labeo rohita

3 L. calbasu

4 Notopterus chitala

5 Lates calcerifer

6 Clarias batrachus

7 Anabas testudinius

8 Cirrhina mrigala

9 Channa marulias

10 Channa punctatus

11 Barilius barila

12 Chlisa chuna

13 Bariluis vogra

14 Labeo rohita

15 Labeo bata

16 Puntius chola

3.9.10 Phytoplankton

Phytoplankton are the primary producers of an ecosystem and thus

help in maintaining DO of a water body. Any reduction in the number of

phytoplankton would ultimately affect the whole ecosystem. A known

volume of sample (50 Ltrs.) is collected using plankton net. The use of

plankton net involves filtering of large quantity of water through the

net. The water is filtered through the sides and the planktons can be

concentrated in a bottle connected at the lower end of the net (ref.

Table – 3.9.11).

3.9.11 Zooplankton

Zooplankton in this river mainly consists of Rotifers, Cladocera,

Copepodes and Ostracods. Rotifers were found to be the most

dominant zooplankton in all the seasons at all stations (ref. Table –

3.9.11).


C3 - 76


Table 3.9.11

List of Planktons

LIST OF PHYTOPLANKTONS

OBSERVED

LIST OF ZOOPLANKTONS OBSERVED

• Centric diatom • Cypris sp

• Thalassiothrix sp • Daphnia sp

• Microcystis sp • Nauplius sp

• Zygnema sp • Mysis sp

• Spirogyra sp • Microcystis sp

• Chara sp • Paramoecium sp

• Oedogonium sp • Cypris sp

3.9.12 Benthic Macro-Invertebrates

The benthic organisms are the best organisms for the biomonitoring of

any water body due to its static nature in its habitat, unlike the

plankton (both zooplankton and phytoplankton), whose abundance or

presence mainly depends at the mercy of the current. This group was

represented by Polycheata, Insects, Gastropods and Pelacypoda (ref.

Table – 3.9.12).

Table 3.9.12

List of Benthos

Sl. No. Phytobenthos Zoo benthos

1. Anabaena sp Vivipera sp

2. Closterium sp Lymnaea sp

3. Oedogonium sp Oragon sp

4. Amphora sp Chironomus sp


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3.10 DEMOGRAPHY & SOCIO-ECONOMIC STATUS

3.10.1 GENERAL DESCRIPTION The growth of industrial sectors and infrastructure developments in

and around the agriculture dominant areas, village and towns is bound

to create its impact on the socio-economic aspects of the local

population of the area experiencing development. The impacts may be

positive or negative depending upon the development activity. To

assess the anticipated impacts of the project and industrial growth on

the socio-economic aspects of people, it is necessary to study the

existing socio-economic status of the local population, which will be

helpful for making efforts to further improve the quality of life in the

area under study.

The sociological aspects of this study include human settlements,

demography, and social strata such as Scheduled Castes and

Scheduled Tribes and literacy levels besides infrastructure facilities

available in the study area. The economic aspects include occupational

structure of workers.

The Baseline Demographic and Socio economic characteristics with

regards to demography, literacy and occupational status have been

described based on the Primary Census Abstract, 2011. Guwahati

Refinery is located at Maniram Dewan Road, Noonmati, Guwahati,

District: Kamrup in the state of Assam. A total of 64 villages,

Guwahati and Nagengi municipalities and some Census towns fall

under the 10 km radius study area. A comparative assessment has

been made for the respective demographic aspects, based on the year

2011 Census data, which has been discussed in the following sections.

The study area is urban in nature and highly populated with the total

population of 10,70,184 (as per 2011 Census). Scheduled Caste (SC)

and Scheduled Tribe (ST) population in the study area is about 6.35%

and 6.27% w.r.t. the total population respectively. The sex ratio in the

study area is about 934 females per 1000 males. The overall literacy

rate is about 81.6% of the total population. The principal language is

Assam’s and the principal staple food is rice. The primary sources of

drinking water are tube wells, and Supply water.


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3.10.2 DEMOGRAPHIC ASPECTS

Average Household Size:

The Study area has an average family size of around 4.2 persons per

household. This is considered to be a normal family size in Assam.

Overall population density and family size:

As per 2011 census, the total population in the study area is

1,070184. According to this population in the study area Population

Density is approximately 3,408 persons per square kilometer. Total

population, population density & family size have been shown below in

Table-3.10.1.

Table-3.10.1

Population density and family size

Particulars Number

No. of Household

Population Density

Family Size

Male Population

Female Population

Total Population

253861

3,408 Nos./sq.km

4.22

553370

516814

1070184

Source: Census of India, 2011

Sex Ratio:

According to 2011 census, the sex ratio (female per 1000 male) of the

rural segment in the study area is 959, which is comparatively little

higher than the urban segment i.e., 932. As a whole sex ratio of the

study area is 934.

Population structure:

As per 2011 census total rural population within the study area is

88667 having 51.06% of male and 48.94% of female population. In

comparison with rural population, total urban population within the

study area is 981517 with male and female population is 51.77% &

48.23% respectively. As a whole total population within the study area

is 1070184 with total male and total female population is 51.71% &

48.29% respectively. The above table reveals that about 8.3% of the


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total population within the study area belongs to the rural area, which

shows the rural nature of the study area.

As per 2011 census, the Scheduled caste (SC) population in the rural

sector of the study area is 5.99% of the total rural population, which

is quite lower than the urban sector of the study area, which is 6.38%

of the total urban population. As a whole, SC population is 6.35%

w.r.t. the total population in the study area.

As per 2011 census, Scheduled Tribe (ST) population in the rural

sector of the study area is 26.11% of the total rural population which

is quite higher than the urban sector of the study area, which is

4.48% of the total urban population. As a whole, ST population is

6.27% w.r.t. the total population in the study area.

The total population structure with scheduled caste and scheduled

tribe population has been shown in Table-3.10.2.

Table-3.10.2

Population Structure

Area

Number of population

Number of

Household Total Population Scheduled Caste Scheduled Tribe

Male Female Total Male Female Total Male Female Total

Rural 45271 43396 88667 2703 2610 5313 11798 11352 23150 18761

Urban 508099 473418 981517 32050 30575 62625 22395 21597 43992 235100

Total 553370 516814 1070184 34753 33185 67938 34193 32949 67142 253861


Literacy Level:

Total literacy rate in rural sector of the study area is 68.1% of the

total rural population whereas male literacy rate is 73.2% of the total

rural male population and female literacy rate is 62.7% of total rural

female population while total literacy rate in urban sector of the study

area is 82.8% of the total urban population where male literacy rate is

85.4% of the total urban male population and female literacy rate is

80.1% of the total urban female population. The overall literacy rate

in the study area is about 81.6% w.r.t. the total population where

male literacy rate is 84.4% (w.r.t. the total male population) and


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female literacy rate is 78.6% (w.r.t. the total female population).

Population classification for literates in the study area is presented

Table-3.10.3.

Table-3.10.3

Literacy Level

Area No. of Literates

Male Female Total

Rural 33161 27212 60373

Urban 433813 379055 812868

Total 466974 406267 873241


3.10.3 OCCUPATIONAL STRUCTURE

The occupational structure of population in the study area is studied

with reference to main workers and marginal workers. As per Census

of India, all persons engaged in 'work' defined as participation in any

economically productive activity with or without compensation, wages

or profit are workers. The Reference period for determining a person

as worker and non-worker is one year preceding the date of

enumeration The Census classifies Total Workers into two groups

namely, (i) Main workers (ii) Marginal workers. Main Workers are

those workers who had worked for the major part of the reference

period i.e. 6 months or more. Marginal Workers are those workers

who had not worked for the major part of the reference period i.e. less

than 6 months.

The main workers include 10 categories of workers defined by the

Census Department, which consists of cultivators, agricultural

laborers, those engaged in live-stock, forestry, fishing, mining and

quarrying; manufacturing, processing and repairs in household

industry; and other than household industry, construction, trade and

commerce, transport and communication and other services.


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Workers and Non-workers:

Total Worker in rural areas is 40.0% of the total rural population of

88667 and Total Worker in urban areas is 39.1% of the total urban

population of 981517, while overall total worker is 39.1% of the

overall total population of 1070184 in the study area according to

2011 Census. The total workers are divided into main and marginal

workers.

Main Worker in rural areas is 69.0% of the total rural worker of 88667

and Main worker in urban areas is 86.7% of the total urban worker of

981517, while overall total Main worker is 85.2% of the overall total

worker of 1070184 in the study area according to 2011 Census.

Marginal Worker in rural areas is 31.0% of the total rural worker of

88667 and Marginal worker in urban areas is 13.3% of the total urban

worker of 981517, while overall total Marginal worker is 14.8% of the

overall total workers of 1070184 in the study area according to 2011

Census.

Non-Worker in rural areas is 60.0% of the total rural population of

88667 and Non-Worker in urban areas is 60.9% of the total urban

population of 981517, while overall Non-worker is 60.9% of the

overall total population of 1070184 in the study area according to

2011 Census.

The occupational status of workers and non-workers has been shown

in Table – 3.10.4.

Table – 3.10.4

Occupational Status

Area

No. of workers No. of non-workers Total

Population

(3)+(6)+(9) Main Workers Marginal Workers

Male (1) Female

(2)

Total (3) Male

(4)

Female

(5)

Total

(6)

Male (7) Female

(8)

Total (9)

Rural 19601 4851 24452 5291 5709 11000 20379 32836 53215 88667

Urban 269060 63486 332546 27643 23258 50901 211396 386674 598070 981517

Total 288661 68337 356998 32934 28967 61901 231775 419510 651285 1070184



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Classified Occupational Status:

Cultivators and agricultural workers in rural areas are 7.4% and 2.3%

respectively w.r.t. the total rural population of 88667 and in urban

areas these are 0.18% and 0.18% respectively w.r.t. the total urban

population of 981517. Overall cultivators and agricultural workers are

0.78% and 0.36% respectively w.r.t. the total population 1070184 in

the study area. The classified occupational status in the study area

has been tabulated in Table-3.10.5.

Table-3.10.5

Classified Occupational Status

Area Total

Workers

Cultivators Agricultural

Workers

Others

Rural 145663 17794 44768 37356

Urban 136198 939 2806 107321

Total 281861 18733 47574 144677

Graphical presentations of demographical and occupational status

have been given below in FIGURE-3.10.1.


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FIGURE-3.10.1

GRAPHICAL PRESENTATION OF DEMOGRAPHIC & SOCIAL

STATUS (BASED ON 2011 CENSUS DATA)


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4.0 Environmental Impacts of the Project Envirotech East Pvt Ltd

CHAPTER-4.0

ENVIRONMENTAL IMPACTS OF THE PROJECT

4.1 PROJECT ACTIVITIES

PHASES OF IMPACTS

The proposed BS-VI project will have impacts on the environment in two distinct phases. During the construction phase, which may be

regarded as temporary or short-term; the other during the operation stage, which will have long term effects.

The environmental impacts in this study have been discussed separately for the construction phase and the operation stage for this

specific project.

Spatially, the impacts have been assessed over the study area of 10 km. radius of the project site. Overall impacts in the regional context

are negligible unless stated otherwise.

4.2 ACTIVITIES DURING CONSTRUCTION PHASE

During the construction phase, the following activities among many are considered to be important towards development of impacts:

a) Site preparation

b) Excavation and backfilling

c) Hauling of earth materials and wastes d) Piling, cutting and drilling

e) Erection of concrete and steel structures f) Road construction

g) Painting and finishing h) Clean up operations

The activities can be divided into two categories, viz. sub-structural

and super-structural work. Certain foundation would require pile driving. The pile driving machinery would pose noise and gaseous

pollution.

Moreover, construction work will involve cutting of trenches, excavation, concreting etc. All these activities will give rise to dust


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pollution. The super-structural work will involve steel work, concrete

work, masonry work etc. and will involve massive construction equipment like cranes, concrete mixers, hoists, welding sets etc.

There may be dust, gaseous and noise pollution from these activities. Concrete and masonry works involve considerable amount of water

which generally induce certain impact on the local water source.

Mechanical erection work involves extensive use of mechanical equipment for storage, transportation, erection and on-site fabrication

work. These activities generally produce some air contaminants and noise pollution. On the other hand, electrical work is less polluting in

general.

4.3 ACTIVITIES DURING OPERATIONAL PHASE

There is proposal to implement BS-VI Projects at Guwahati Refinery to produce BS-VI quality fuels. For this purpose, some of the existing

units i.e., NDAdeptG Unit, NHDT-ISOM Unit, HGU Unit & HDT Unit will be revamped and one new unit i.e., IndSelectG Unit and MS auto

Blender will be installed on the available land within the existing plant boundary of the refinery.

There will be no additional stack after the implementation of the

proposed project. Air emission of the refinery shall remain at the existing level. There will be no additional solid waste generation after

the implementation of the proposed project. It would involve waste water discharge and may have certain impact on discreet

environmental attributes that are discussed in the following sections.

4.4 IMPACTS ON SOIL AND LAND USE

The proposed project would be set up in the available area within the existing plant premises already earmarked for this particular project.

As such, the construction activities would be confined within the boundary of the existing plant premises and the amount of productive

soil included in the proposed site is marginal. Therefore, the impacts will be minimum.

Preparatory activities like construction of access roads, temporary

offices, quarters and godowns, piling, storage of construction materials etc. will be confined within the project area. These will not

generally exercise any significant impact except altering the land use pattern of the proposed site. There will be no impact on the adjoining

land.


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Moreover, the plant and its vicinity being industrial and urban area, it

shall be of no importance to ensure that no degradation of agricultural soils shall result from the industrial or other types of pollution.

Overall, it could be easily inferred that there will be no adverse impact

on soil quality & land use in the study area.

4.5 IMPACTS ON HYDROLOGY 4.5.1 Impacts on Hydrology during Construction

The piece of land to be developed is a small part of the whole existing complex. Moreover, the storm water drainage of the land piece is well

developed as integral part of the total such development of the complex. Therefore, the drainage pattern of overland water flow will

not be changed due to the site preparation involving alteration of the

existing profile and slope of the land.

4.5.2 Impacts on Hydrology during Operation

Appropriate drainage facilities have been developed within the plant including proper disposal to drains. Thus, operation of the complex is

not likely to cause any impact on surface water hydrology.

At present, the fresh water requirement of the refinery is met from the existing Water Supply system of the refinery, which draws water from

Brahmaputra River. The same practice will continue after the implementation of the proposed project. 10 m3/hr. additional make up

water will be required in the refinery after the implementation of BS VI project, which will be sourced from the ETP recycled water. No

additional fresh water will be required. Hence, there will be no impact

on the hydrology of the Brahmaputra River System due to the operation of the proposed project.

As per the existing practice, most of the treated waste water will be

reused for various purposes inside the refinery and the balance part will be discharged into Brahmaputra River through the existing

disposal system. The quality of the treated waste water is expected to be similar to the level achieved now.

4.6 IMPACTS ON WATER QUALITY

4.6.1 Impacts on Water Quality during Construction Adequate arrangements will be made to ensure proper drainage of

wastewater from the construction sites so that such waters do not form stagnant pools nor aggravate soil erosion. Stagnant pools of


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water will promote breeding of mosquitoes and create generally

unsanitary conditions.

With regard to the water quality, wastewater from construction activities would mostly contain suspended impurities. Other pollutants

that may find their way to it will be in insignificant concentrations and may be safely disregarded.

As the wastewater would ultimately have to be discharged to existing

surface water drains, care would be taken so that excess suspended solids in the wastewater are arrested before discharge.

Thus, it is recommended to lead drains from different construction

sites to pits where excess suspended solids are settled out and

relatively clear supernatant is discharged.

4.6.2 Impacts on Water Quality during Operation Background water quality has been found by actual sampling and

analysis. The major water body close to the project site is Brahmaputra river. The Raw Water requirement of the plant is fulfilled

from this river. Water quality of this river has, therefore, been monitored with due importance.

The waste water, generated from the proposed project will be

subjected to necessary treatment in the existing Effluent Treatment Plant (ETP) to amend the quality of effluent to regulatory requirement

before discharge. As per the existing practice, most of the treated waste water will be reused for various purposes inside the refinery and

the balance part will be discharged into Brahmaputra River through

the existing disposal system.

After the implementation of BS-VI project, the additional waste water

generation of the refinery will be around 10 m3/hr., which will be

reused after undergoing proper treatment in the existing Effluent



As the effluent will be completely treated and its quantity and quality is expected to be similar to the level achieved now, no impact on the

water quality of the receiving water body is envisaged. The effluent

has the added advantage of huge dilution in this vast water body. It may, therefore, be concluded that no impact is likely on the surface

water quality due to the operation of the said project.


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4.7 IMPACTS ON AIR QUALITY

4.7.1 Impacts on Air Quality during Construction Particulate matter would be the predominant pollutant affecting the air

quality during the construction phase. Dust will be generated mainly during excavation, back filling and hauling operations along with

transportational activities. However, wind in the area generally being low to medium, wind blown dust is not expected to have tangible

effects.

Undesirable gaseous pollutants will be generated mostly by the automobile traffic. However, this would not lead to any tangible effect,

as the expected traffic volume is low. Whatsoever, it would be ensured

that all the vehicles plying during construction are properly tuned and maintained to keep emissions within the permissible limits.

4.7.2 Impacts on Air Quality during Operation There will be no additional stack after the implementation of the

proposed project. Air emission of the refinery shall remain at the existing level. Hence, there will not be any adverse impact on the air

quality of the area.

Impact due to transportation of crude oil and finished products

Presently, the background emissions in the project area are primarily

due to emissions from traffic plying on the near by road in the vicinity

of the site. However, at Guwahati Refinery, the crude oil is being

supplied from Assam fields by M/s OIL INDIA LIMITED through a

cross-country pipeline. Besides, the refinery also receives imported

crude in rakes from Barauni Refinery. 85% of the total volume of

product comprising of MS, SKO and HSD is also transported through

pipeline. Rest 15% volume of the products, which comprise of LPG,

Naphtha, ATF, RPC and Sulphur is transported via Road. Naphtha is

also dispatched via railways. After the implementation of the

proposed BS-VI project, the same practice will be followed. Hence,

there will be no change in the overall traffic scenario after the

implementation of the proposed project.

The vehicular traffic plying in and out of the project site is one of the significant sources of air pollution. In the existing plant of Guwahati


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Refinery, very strict regulations are imposed for vehicular movement,

which will be further extended to the proposed project.

All trucks moving for transporting, solid waste are fully covered to avoid dust pollution. Adequate and planned road network is in place to

ensure smooth movement of the goods vehicles.

It is ensured that all the vehicles plying in the working zone are properly tuned and maintained to keep emissions within the

permissible limits. At loading and unloading points, there is arrangement for water sprinkling so that dust generation during

transportation of materials is minimized further. All the internal roads within the plant are metalled. The greenbelt development in and

around the refinery further helps in reduction in fugitive emissions.

4.8 IMPACTS OF NOISE

4.8.1 Impacts of Noise during Construction During the construction phase, operation of light to heavy construction

machinery is likely to emit noise with moderate to huge decibel value. Careful planning of their operation is required during this period so

that minimum disturbances are caused. Moreover, residential areas being mostly far away, no significant impact is apprehended.

Finally, green belt in and around the refinery would serve the dual

purpose of checking fugitive dust as well as noise pollution.

4.8.2 Impacts of Noise during Operation Major noise sources during the operation of the proposed project will

be equipments like compressors, fans, motors etc. However, they will

be designed so as to limit the noise levels to <85 dBA at 1 m. from the respective equipment.

The day and night time ambient noise levels monitored in and around

the project area revealed slightly high noise levels due to the extensive industrial, transportational and commercial activities in the

area. However, such noise levels in industrial areas are within the permissible limits.

Though operational activities is not expected to cause any undue

disturbances to the people living in the proximate areas outside the plant boundary, impacts on persons working very close to the project

area are likely.


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Impacts of noise on workers could be minimised through adoption of

adequate protective measures in the form of (a) use of personal protective equipment (ear plugs, ear muffs, noise helmets etc.), (b)

education and public awareness, and (c) exposure control through the rotation of work assignments in the intense noise areas.

4.9 IMPACTS ON ECOLOGY

4.9.1 Impacts on Terrestrial Ecology during Construction The impact of construction activities will be confined to the project

site. Thus, the site development works will not lead to any loss of any vegetation.

Only few species of common birds are sited in and around the site. No

wild life is involved in the site and vicinity. Therefore, there is no likely

tangible impact from higher noise and emissions during construction on the common animals and birds in the area.

4.9.2 Impacts on Terrestrial Ecology during Operation

The base line status of terrestrial flora and fauna within the study area has been drawn up earlier. The study area is dominated by urban and

semi-urban land use.

Aamchung sanctuary is located within 10 km. radius area of the

project site. Apart from this, there are no other eco-sensitive areas

like National Parks/ Biosphere Reserves/ Migratory Corridors of wild

animals, Reserve Forest etc. within 10 km radius study area around

Guwahati Refinery.

The harmful effects of such air pollutants as SPM, SO2 and NOx in

affecting growth and other similar functions of trees, either singularly or synergistically is well known. However, there will be no increase in

the emissions of the air pollutants after the implementation of BS-VI project. So, this will not cause any stress on the growth of the plant in

the area.

4.9.3 Impacts on Aquatic Ecology during Construction As the water quality of the surface water bodies is not likely to change

significantly due to the construction activities, no tangible impact on the aquatic life is expected.

4.9.3 Impacts on Aquatic Ecology during Operation

Wastewater after proper treatment will be discharged into

Brahmaputra River through the existing disposal system and its


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quantity and quality is expected to be similar to the level achieved

now, no impact on the aquatic ecology of the receiving water body is

envisaged.

4.10 IMPACTS ON DEMOGRAPHY AND SOCIOECONOMICS Some workforce comprising of skilled, semi-skilled and unskilled

labourers will be needed at the peak period of construction phase. Since most of labour force will be drawn from established

neighbourhood, no new environmental problem is anticipated. Only for

a few skilled personnel, brought to site from outside the locality, proper housing/accommodation would be provided in the established

township.

As the construction phase will be limited to a very short time span, it would not have any long term effect. IOCL proposes to continue the

current community development and awareness programmes for the people in the surrounding areas.


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5.0 Environmental Monitoring Programme Envirotech East Pvt. Ltd.

CHAPTER-5.0 ENVIRONMENTAL MONITORING

PROGRAMME

5.1 NEED FOR MONITORING It is imperative that the Project Authorities set up regular monitoring stations to assess the ambient levels in relevant areas

of environment after the commissioning of the project. An environmental monitoring programme is important as it provides

useful information on the following aspects:

i) It helps to verify the predictions on environmental impacts presented in this study.

ii) It helps to indicate warnings of the development of any alarming environmental situations, and thus, provides

opportunities for adopting appropriate control measures.

The monitoring programme in different areas of environment,

outlined in the next few sections, has been based on the findings of the impact assessment studies, described earlier.

5.2 RELATED ENVIRONMENTAL PARAMETERS 5.2.1 Meteorology

Meteorology forms one of the important categories of environment

in the area as it directly controls the levels of air quality

parameters. As such, a programmable microprocessor based wind monitor system should be installed inside the refinery premises to

collect various meteorological parameters like wind speed, wind direction, temperature and relative humidity on a continuous basis.

5.2.2 Ambient Air Quality Monitoring of ambient air quality should be carried out on a regular

basis to ascertain the levels of harmful pollutants in the

atmosphere, as air quality could represent one of the worst affected environmental disciplines due to the plant operations.

5.2.3 Stack Emissions Stack emissions should also be monitored, particularly to ascertain

that emissions are within the stipulated level. Sampling techniques appropriate for stack monitoring should be employed with the

monitoring being undertaken during operation at peak load with the frequency of once in a month.


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5.2.4 Liquid Effluents

To ensure that all sections of the ETP are working effectively and effluent discharged meets permissible standards, monitoring should

be done at different stages of treatment. Treated effluent quality before discharge should be monitored and analyzed for the

parameters required for MINAS.

5.2.5 Noise Levels

Ambient noise levels should be monitored within the plant at a frequency of once every season for one year, in order to compare

the existing noise levels with the stipulated limits specified in the Gazette Notification of December, 1989.

5.3 MONITORING CONDUCTED 5.3.1 Stack Emission

Continuous on-line analyzers for SO2, NOx, PM & CO are installed at all the stacks of the refinery. Emission of SO2 in each operational

stack is also monitored using wet chemistry methods on monthly basis. Besides, other parameters like particulate matters, NOx &

CO are also monitored every month for all the stacks, particularly to ascertain that emissions are within the design level.

There will be no new stack after the installation of the proposed BS-VI project

5.3.2 Ambient Air

There is one automatic (continuous monitoring type) Ambient Air Quality Monitoring Station (AAQMS) in the refinery premises for the

monitoring of SO2, NOx, CO, O3, PM10, PM2.5, NH3. Besides, another

four no. fixed stations are also operated to keep constant vigil on the quality of Ambient Air of the area. PM10, PM2.5, SO2, NOx,

Ozone, Lead, NH3, CO, Benzene, Benzo(O)pyrene, Arsenic & Nickel are monitored.

5.3.3 Fugitive Emission Monitoring

Fugitive Emission Monitoring is undertaken at all relevant locations in the refinery on monthly basis for total hydrocarbons and

benzene.

5.3.4 Liquid Effluent Treated effluent before discharge are monitored and analysed on

daily basis for the parameters required for MINAS. Online analyzers for monitoring of treated effluent quality have been installed for the


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parameters pH, TSS, COD & BOD. Flow meter is also available for daily monitoring of the treated effluent quantity.

5.3.5 Noise

Noise monitoring is being conducted at 37 locations at the respective units of the refinery with a frequency of once in a

month.


Ground water quality is being monitored at 3 locations inside the refinery with a frequency of once in a month.


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6.0 Additional Studies Envirotech East Pvt. Ltd.

CHAPTER-6.0

ADDITIONAL STUDIES (RISK ASSESSMENT &

DISASTER MANAGEMENT PLAN)

6.1 INTRODUCTION Guwahati Refinery is the country’s first Public Sector Refinery as well

as Indian Oil’s first Refinery serving the nation since 1962. It

produces various products like Quality LPG, Motor Spirit, Aviation

Turbine Fuel, Pipeline Compatible Kerosene Oil, High Speed Diesel

and Raw Petroleum Coke. Presently, the crude oil is being supplied

from Assam fields by M/s OIL INDIA LIMITED through a cross-country

pipeline. Besides, the refinery also receives imported crude in rakes

from Barauni Refinery.

There is proposal to implement BS-VI Projects at Guwahati Refinery to

produce BS-VI quality fuels. For this purpose, some of the existing units i.e., NDAdeptG Unit, NHDT-ISOM Unit, HGU Unit & HDT Unit will

be revamped and one new unit i.e., IndSelectG Unit & MS Auto-Blender will be installed on the available land within the existing plant

boundary of the refinery.

6.2 RISK ASSESSMENT Risk assessment has been conducted for BS-VI project and is

presented as a separate report.

6.3 DISASTER MANAGEMENT PLAN A disaster is an unforeseen combination of circumstances that causes

serious body injuries loss of life or extensive damage to the plant

facilities or total.

Guwahati Refinery has already prepared a comprehensive On-site Emergency Plan to address all kind of consequences, based on the

identification of various accident scenarios after the assessment of the potential hazards at the refinery.

Anyone or more of the following uncontrollable factors may cause disaster in the proposed project:

1. Reduction or failure of steam 2. Reduction or failure of cooling water


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3. Failure of Power

4. Rupture or damage of the line, vessel or tank 5. Excessive leakage of inflammable or corrosive or toxic material

6. Cyclone 7. Earthquake

8. Fire or explosion 9. Sabotage

10. Riot 11. Air Raid

6.4 SCOPE OF THE PLAN Industrial growth has necessitated emergency plans to tackle effectively disasters like major fires, release of toxic gases, accidents,

vapour cloud explosion, oil spills, bomb threats, natural calamities like earthquake, flood etc. arising from the factories.

In case of an extended emergency in the refinery, safety of nearby

population is considered to be of prime importance. It has, therefore, become imperative that appropriate plans are formulated for taking

care of emergency situations, both On-site & Off-site, the primary objective being:

1. To minimise the risk of occurrence (prevention). 2. To rapidly contain (emergency response), and

3. To effectively rehabilitate damaged areas and population (restoration).

In line with the provision of Section 41B of Factories Act, 1948, Rule

13 of Manufacture, Storage & Import of Hazardous Chemical Rules, 2000, and Rule 10(e) of Chemical Accidents (Emergency Planning

Preparedness and Response) Rules, 1996 under Environment Protection Act, 1986, and considering the potential hazards, as

mentioned above, associated with the refineries, Guwahati Refinery has prepared On-site Emergency Management Plan and Off-site

Emergency Management Plan.

This plan will be treated as important document / procedure where

interlinking of technical know-how and resources availability are identified, not only for the Refinery but also for other agencies

involved in these activities i.e., Government Fire services, Factory Inspectorate, Medical, Police, Civil Defense etc.


C6 - 3


6.5 ON-SITE EMERGENCY PLAN The disaster control procedure lays down the efforts to be made to prevent fatal accidents, physical harm or injury to personnel and

damage to equipment facilities materials. It requires coordinated efforts of all employees to control and eliminate a disastrous situation.

On-site Emergency Management Plan deals with handling of the

emergency within the boundary of the plant for which Guwahati

Refinery is equipped in itself.

OBJECTIVES The objective of the On-site Emergency Plan should be to make

maximum use of the combined resources of the plant and the outside service to:

• Effect the rescue and treatment of casualties. • Safeguard other personnel in the premises.

• Minimize damage to property and environment. • Initially contain and ultimately bring the incident under control.

• Identify any dead and Provide for the needs of relatives.

• Provide authoritative information to the news media.


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DESIGNATED CHART FOR ON-SITE DISASTER 2016-17


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SUCCESSION CHART FOR ON-SITE DISASTER 2016-17


C6 - 6


ROLES & RESPONSIBILITIES OF EMERGENCY RESPONSE CO-ORDINATORS

1. Chief Incident Controller The Chief incident Controller (CIC) has the overall responsibility to

protect personnel, site facilities, and the public before, during, and after an emergency or disaster. The CIC shall be present at the main

emergency control centre for counsel and overall guidance.

Responsibilities of the CIC include:

a) Assessment of the situation and declaration of emergency. b) Mobilization of main coordinators and key personnel.

c) Activation of emergency control centre.

d) Taking decision on seeking assistance from mutual aid members and external agencies like police, fire brigade,

hospitals etc. e) Continuous review of situation and decide on appropriate

response strategy. f) Taking stock of casualties and ensure timely medical attention.

g) Ensure correct accounting and position of personnel after the emergency.

h) Ordering evacuation of personnel as and when necessary. i) Taking decision in consultation with District Administration

when an Offsite emergency is to be declared.

2. Site Incident Controller The Site Incident Controller will report directly to CIC &

responsibilities of SIC include following:-

a) The SIC shall maintain a workable emergency control plan,

establish emergency control centers, organize and equip the organization with ERDMP and train the personnel.

b) The SIC shall be capable of making quick decisions and taking full charge.

c) The SIC shall communicate to the Emergency Control Centre where it can coordinate activities among groups.

d) The SIC shall be responsible for ensuring that appropriate local and national government authorities are notified,

preparation of media statements, obtaining approval from the CIC and releasing such statements once approval received.

e) The SIC shall also ensure the response to the incidents or the emergencies, as the case may be, is in line with entity

procedures, coordinating business continuity or recovery plan


C6 - 7


from the incident. He must ensure next of kin are notified in a

timely manner. f) The SIC shall also co-ordinate if any specialist support is

required for the above purpose and g) The SIC shall decide on seeking assistance of mutual aid

members and external agencies like police, fire brigade, hospital etc.

3. Administration & Communication Coordinator Responsibilities of the administration and communication controller shall include the following:

a) To coordinate with mutual aid members and other external agencies ;

b) To direct them on arrival of external agencies to respective coordinators at desired locations ;

c) To activate the medical centre and render first aid to the injured. Arrange ambulance and coordination with hospitals for

prompt medical attention to casualties ; d) To arrange procurement of spares for fire fighting and

additional medicines and drugs ; e) To monitor entry and exit of personnel into and out of premises

f) To ensure only authorized personnel enter into the premises ; g) To regulate the flow of traffic into and out of premises and

control the mob outside, if any, with the assistance of the police. h) To provide administrative and logistics assistance to various

teams and

i) To arrange evacuation as directed by the chief incident controller, and in coordination with the civil authorities like

police, panchayat /municipal authorities etc.

4. Fire Fighting & Rescue Coordinator Responsibilities of the Fire and Safety Coordinator shall include the following:-

a) To activate emergency sirens as per the practiced codes ;

b) To take charge of all fire fighting and rescue operations and safety matters;

c) To ensure that key personnel are called in and to release crew of fire fighting operations as per emergency procedure.

d) Assess functioning of his team and communicate with the CIC and or administrative controller for any replenishment or,

replacement of manpower or firefighting equipment ;


C6 - 8


e) Direct the fire brigade personnel and mutual aid members to

their desired roles as also proper positioning of the manpower and equipment ;

f) To decide the requirement of mutual aid and instruct fire station, who in turn will contact mutual aid members ;

g) To coordinate with outside fire brigades for properly coordinated fire fighting operation ;

h) To ensure that casualties are promptly sent to first aid centre / hospital ;

i) To arrange requirement of additional fire fighting resources including help from mutual aid partners ;

j) Continually liaise with the SIC and or CIC and implement the emergency combat strategies as communicated by him ;

and k) Ensure adequate hydrant pressure in the mains and monitor

water level in the reservoir.

l) Requisition of additional manpower from CISF.

Note: Fire chief shall wear identification jackets at the site of disaster so that he is clearly distinguished among fire fighting personnel and is visible

from a distance.

5. Security Coordinator The Security Coordinator reports to the Chief/ Site Incident Controller

and is responsible for security of the installation during any incident or

emergency situation and for implementing the actions below:

a) Obtaining an approved visitor list from the security department

or reception for ensuring that personnel on the list are escorted to reception by security staff;

b) Maintaining security of the office in the event of an office evacuation;

c) Providing office security and assisting authorities in the event of civil unrest or when required organizing additional security at

the emergency scene; d) Obtaining initial briefing from Chief/Site incident Controller and

providing security information and or status reports to Site

Incident Controller during the emergency; e) Assuming responsibility for any task delegated by Chief Incident

Controller; and f) Assessing the emergency, identify security specific problems and

recommend solution to Chief Incident Controller. g) Prevent unauthorized entry in gate.


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6. Media & Public Relation Coordinator A good public relations program is extremely important in an

emergency situation inquiries will normally be received from the

media, Government agencies, local organizations and the general

public.

a) Identify an information officer that is well equipped and trained

in media relations. b) Initial releases shall be restricted to statements of facts such as

the name of the installation involved, type and quantity of spill, time of spill, and countermeasure actions being taken. All facts

must be stated clearly and consistently to everyone. c) Plans shall also be developed to utilize local media & television

stations for periodic announcements during an emergency. This

shall also assist in reducing rumors and speculation.

Additional points for GR requirement

d) PA system (i.e. Portable loudspeaker) to be made available & announcement to control the movement of pedestrians during

disaster. e) Photography & Videography as per requirement.

7. Operations Coordinator a) Instruction to shutdown units as per emergency procedure if

required.

b) Instruct OMS shift in-charge to empty out the tank by transferring to other empty tanks if required.

c) Ensure empty and loaded trucks are removed to safer area to the extent possible so as not to affect emergency handling

operations. d) Ensuring stoppage of all loading/unloading operations at

TTL/TWL & Stoppage of truck movement. e) Keep a track on other associated tanks dips rise if any.

f) Guide Fire fighting & Rescue Coordinator and Security Coordinator in the entire operation.

g) Contact TPS and ensure uninterrupted power & utilities. h) During emergency communication with SICs of pipeline & Oil

India to be done by OM&S.

8. HSE Coordinator a) Preparation, review and updating of the ERDMP as per

regulations.


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b) Contact Controller of Explosives, Guwahati/ State Pollution

Control Authorities, Guwahati/Chief Inspector of Factories, Guwahati/ GM (HSE), HQ, OISD, Noonmati Police station and

inform about the incident. c) To record key incident events/actions on incident status board.

d) Making the location of Incident in the Plot plan available at CCR. e) Information shall be given to statutory bodies after all clear

siren.

9. Maintenance Coordinator a) To ensure all Hot/cold jobs & other jobs by contract labours are

stopped immediately till all clear siren is sounded. b) Activation of central location (Mechanical Workshop) for

assembling of Mechanical & Civil maintenance personnel. c) Provide all maintenance services as required by other

coordinators. d) Mobilize manpower from maintenance for assisting Fire Fighting

and Rescue Coordinator. e) Civil maint: Arrange materials for blocking open channel or dyke

and collecting oil from open channel. f) Civil maint: Arrange for replacement of hay in hay filters in open

channel. g) Ensure uninterrupted coverage of CCTV.

10. Medical Coordinator a) Mobilize the Medical team at site and arrange first aid to victims. b) Make available drugs/equipment from hospital stores.

c) Arrange ambulances/cars (2 Nos.) for transportation of injured. d) To liaise with State Health Services for medical help.

e) Arrange to contact nominated hospital and Govt. Hospitals and inform the number of injured, nature of injuries and number of

bed required. f) Causalities & death cases shall be informed to Emergency

control centre for necessary action.

11. Utilities & Communication Coordinator a) Ensure uninterrupted power supply from TPS.

b) Ensure continuous supply of utilities. c) Ensure maximum water supply for fire fighting

d) Liaise with ASEB for emergency power supply e) Ensure no failure of communication facilities ie. ARP, Group

SMS, Walkie-Talkie, Intercom etc. f) Provide emergency lighting in battery area.


C6 - 11


g) Ensuring back-up communication system is available in the

event of the ECC room is not available. h) Providing quality and diverse communication system for use in

routine and emergency situations. i) Provide temporary intercoms at site if required.

12. Human Resources & Welfare Services Coordinator a) Arrange food and beverages for associated persons including fire

fighting personnel. b) Arrangement of Refreshment for Emergency coordinators at

Crisis Control Room.

c) Requisition Civil Defense Personnel (Home Guards) for assistance.

d) Arrange to communicate with the relatives of the employees injured.

e) To ensure head count (including contract workers) inside the plant during emergency and information to be given to CCR.

13. Transport & Evacuation Coordinator a) Arrange for transport services including hiring of cars outside as

per the requirement.

b) Bus arrangement at Gate no. 1 c) Arrangement of Pool cars to assemble near CCR.

d) Arrangement of Departmental cars inside Gate#2- to assemble at Road between Mechanical Work-shop & Electrical W/s for

reporting to in-charge of Mechanical W/s. e) To ensure headcount at Assembly points in coordination with

Assembly point In-charges. f) To assess the situation & Assembly points & arrangement of bus

in case of evacuation required.

14. Material Coordinator

a) Issue fire fighting materials & other materials to the authorized

persons of various coordinators as per requirement. b) Mobilize total crew for purchase/issue of materials.

c) Maintain adequate stocks of fire fighting materials.

15. Finance Coordinator a) Arrange to release finance for emergency use to the Medical

Coordinator, Materials Coordinator and Human Resources & Welfare services coordinator.

b) Inform Excise and Insurance Authorities.


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c) Estimate the loss along with insurance group with assistance

from Technical Services. d) To inform Finance at HQ and Corporate Level.

16. Project Coordinator a) To ensure all Hot/cold jobs & other jobs by contract labours are s

topped immediately till all clear siren is sounded.

b) Take Head count at all project sites. c) Arrange evacuation of contract personnel from Project site to

safe place in coordination with SIC & Transport and Welfare Coordinator.

d) Coordinate emergency management activities, if project site is

involved. e) Help Fire Fighting & Rescue Coordinator.

17. Technical Services Coordinator a) Provide technical information to Coordinators.

Estimate the direct loss/damage and potential loss after the all clear siren is blown.

ASSEMBLY POINTS

Sl. No. Location In-charge Communication

system Working hours Odd hours

1. Near OM&S DDCS

control room

OM&S SIC/ DDCS

operator

OM&S SIC/ DDCS

operator

Walkie-Talkie

2. Near Plant Canteen J. Rudon, ERO Shri Ujjwal Mishra,

DM(ER)

Walkie-Talkie

3. Admin building area N K Saini,

O(A&W)

NA

Note: All the above officers will issue office order during leave and out of station to

indicate the successor for the purpose of DMP.

Roles & Responsibilities of Assembly Point in Charge

1. Head counting at assembly point

2. Coordination with CCR. 3. Evacuation as per instruction of SIC in coordination with

transportation coordinator. 4. Observation of Wind direction & Evacuation in cross-wind direction

in case of toxic gas release.

5. Control the movement of assembled persons.


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6.7 OFF-SITE EMERGENCY PLAN The Off-site Emergency Management Plan of Guwahati Refinery was

first prepared in 2011-12 and has now been up-dated in 2015-16. In

case of any emergency in the Refinery due to which the damage

extends to the neighboring areas affecting local population beyond the

boundaries of plant, Off-site emergency plan is put into action to seek

quick response / services of several agencies viz Government

authorities, Fire Service, Police, Medical, Civil Defense, Army,

Voluntary Organizations etc. thus a multi-disciplinary approach to the

problem is called for.

Based on the Risk study is done for Guwahati Refinery and also based

on the various industrial accidents took place in refining sector,

following probable scenarios for the Guwahati Refinery have been

considered for finalizing detailed action plan for Off-Site emergency

situation.

01. Fire in the Tank Farm Area (Major Fire)

02. Fire and Explosion in the Unit Area

03. Boiler Explosion in Thermal Power Station

04. Vapour Cloud Formation / Explosion (LPG Bullets/Hortonsphere)

05. Chlorine Leak at ETP

06. Naphtha Leak in Cooling Water System

07. Acid Gas (Hydrogen Sulphide) Leak from SRU Block

08. Large Oil Spillage Escaping to Open Channel

09. Bomb Threat in The Refinery

10. Earth Quake

11. Flood

6.7.1 Probable off-site emergency scenario

The scenario on Flood & Earth Quake has not been separately

considered in the plan. As the refinery is located well above the sea

level, threat on account of flood is very remote. In case of earth quake

the resultant happening may be either or combination of any of the

scenarios mentioned below. However District Administration, Kamrup

(Metro) has approved Earthquake Disaster Management plan.

01. Any fire emergency which despite of fire fighting efforts can

affect persons & properties of nearby areas.


C6 - 14


02. Any explosion in the refinery accompanied by the fire which can

risk nearby population and cause damage to property. 03. Leakage of toxic gas (Hydrogen Sulphide) which may affect

nearby population. 04. Leakage of huge quantity of combustible gas (LPG) which has

potential to cause fire in nearby localities. 05. Leakage of liquid hydrocarbon escaping to open channel which

has potential to cause fire in nearby localities.

06. Bomb threat which has potential to cause explosion

accompanied by fire which can cause damage to nearby

population of life and property).

6.7.2 Objective of Off-Site Emergency Plan

The purpose of preparing a well defined On-site cum Off-Site

Emergency Plan is to systematically document and define various

types of catastrophic situations where it will be necessary for District

Administration along with State Police Force to come to take control of

the situation, rescue and evacuation of people living around the

refinery.

This document stipulates various scenarios of refinery emergency

affecting beyond the Refinery area, the infrastructure setup required

at the time of emergency and the envisaged actions by District

Administration, Police Dept., Fire Services, Medical Services, Transport

Dept., Civil Defense, Army and other voluntary organizations, till the

normalcy is achieved after occurrence of the event.

6.7.3 Chief Off-Site Emergency Coordinator (COEC)

The Deputy Commissioner, Kamrup (Metro) District will be the Chief

Off-Site Emergency Coordinator (COEC) for operating the Off-Site

Emergency Plan & will be the overall In-charge of all Off-Site

emergency activities. Additional Deputy Commissioner (DDMA) will be

Dy. Chief Off-Site Emergency Coordinator (DCOEC) & shall be over all

in-charge in absence of Deputy Commissioner, Kamrup (Metro)

District.

The COEC will coordinate various activities with the Works Main

Controller (WMC). Unit head (ED/GM) Guwahati Refinery is the Overall

In-charge for the On-Site Disaster Management Plan. WMC will act

according to the On-Site Emergency Plan. WMC is an organization to

declare state of On-Site Emergency. He is also responsible to inform


C6 - 15


Chief Off-site Emergency Coordinator (Dy Commissioner, Kamrup)/ Sr

Superintendent of Police /Crisis Control Room in case of a major

emergency/ declaration of a disaster.

The COEC, in turn, will activate the Off-Site Emergency Plan as per

the established procedure. WMC will also provide to COEC full details,

nature and magnitude of the emergency and the area likely to be

affected, etc.

The COEC will also be the authority to activate the Off-Site Emergency

Plan and order evacuation where necessary.

The COEC will coordinate with various service agencies such as the

Police, Fire Services, Medical, Transport, Railways, Civil Defense, Army

(as and when required), Factory Inspectorate, Assam Pollution Control

Board, Dy Chief Controller of Explosives, Boiler Inspectorate etc.

The Role of COEC/ DCOEC

1. Establishing the Crisis Control Room (CCR) near the refinery premises at any of the locations feasible in the order of priority.

CISF office at Gate No.1 / Noonmati Police Station / Training Centre of Refinery with the provision for a standby Control Room

in Township in case the main Crisis Control Room becomes dis-functional.

2. Establishing communication linkage at the Crisis Control Room. 3. Requisition Fire Fighting Services from Guwahati City if the

situation demands.

4. Coordinating the rescue operations with police / Civil Defense. 5. Arrangement for announcement through P.A. system to the

affected population around action to be taken by them and advising for evacuation, if required.

6. Identify places of safe shelters where the evacuated population has to be lodged.

7. Requisitioning all possible modes of transport for shifting them to predetermined shelters if required.

8. Organize tents etc. if the shelter places are in open grounds. 9. Organize necessary medical aid through district health

authorities and other voluntary institutions. 10. Ensure supply of food, drinking water and proper sanitation to

the evacuated persons kept in various shelter locations. 11. Arrange protection of property of the evacuated persons during

their absence.

12. Coordination with Assam State Govt.


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13. Coordinating assistance to refinery management for their On-

Site Emergency Management. 14. Monitoring the shelter camps and the evacuated city localities till

normalcy is restored. 15. Making public announcements from time to time in the shelter

camps and in the neighbouring city areas. 16. Coordinating with media persons.

17. Transportation of the evacuated persons back to their localities after the emergency has been controlled and normalcy restored.

6.7.4 Establishing of Central Crisis Control Room (CCR)

The COEC/DCOEC will coordinate the activities from the CCR

established for the purpose near the refinery premises. It is desirable

to have 2 CCRs so that if one is affected by the incident, then the

other one is available for use. Any two of the following locations are

suggested for this purpose.

CISF office at Gate No.1 / Noonmati Police Station / Training Centre of

the refinery / standby Control Room safe and away from the Refinery.

6.7.5 Communication System

The following communication system should be available connecting

the CCR with the refinery & emergency services:

➢ Hot-line Telephone

➢ Wireless Communication System

➢ Portable Public Address System

➢ P & T telephone with STD facility

➢ Cellular phone

6.7.6 Others

In addition to the communication system, the following items should

be available in both the CCRs:

a) Check-list of actions to be taken.

b) A complete list of people to be evacuated if required, pick up

points for evacuation.

c) A copy of the Emergency Plan.

d) Personal protective equipment, such as respiratory safety

equipment (self-contained breathing apparatus industrial gas

mask, non-respiratory safety equipment, such as PVC suits, PVC

hand-gloves, safety goggles, safety helmets, PVC gum-boots

etc.


C6 - 17


e) Emergency power supply and lights.

f) An updated list of resources available to avoid the emergency.

g) Manpower with various emergency services.

h) Equipment required to tackle the emergency.

I) List of organizations and persons with specialized knowledge to

handle the emergency.

FUNCTIONARIES OF OFF-SITE EMERGENCY PLAN

SN FUNCTIONARIES CONTACT DETAILS

OFFICE RESIDENCE CELL NO

A DISTRICT ADMINISTRATION

1 Dy Commissioner, Kamrup (M) 2540149 2540104 9435050119

2 Addl.Dy Commissioner (Disaster Mgmt), Kamrup (M) - 9435109477

3 Emergency control Room DC office 2733052 - -

B Police Services

4 Commissioner of Police, Guwahati 2540278 9435048633

5 Dy. Commissioner of Police,(Traffic), Guwahati 2731847 - 9435025425

6 Addl. Dy. Commissioner of Police, (Traffic) - - 9706088888

C CIVIL DEFENSE

7 Dy.Controller Civil Defense 2305830 - 9854304704

D FIRE SERVICES

8 Director State Fire Services , Assam 2511329 2330435 9435193999

9 Dy.Director State Fire Services, Panbazar 2637680 - 9435541961

E HEALTH SERVICES

10 Director Health Services, Assam 2261630 - 9435100090

F NF RAILWAYS

11 DGM, PS to GM NF Railway 2676006 2676007 9957550003

G POLLUTION CONTROL BOARD OF ASSAM

12 Member Secretary,PCBA 2550258 9435200000 / 8811013003

H DEPTT.OF INSPECTORATE OF FACTORIES

13 Chief Inspector of Factories, Assam 2528204 - 94351 06695

14 Sr. Inspector of Factories, Assam 2462159 9435102132

I PETROLEUM & EXPLOSIVE SAFETY ORGANIZATION (PESO)

15 . Controller of Explosives , Assam 9531068834

J DEPTT OF BOILERS INSTECTORATE

16 Chief Inspector of Boilers, Assam 2300077 99544 82923

17 Sr. Inspector of boilers, Assam 94350 25713

18 GSPL 7010/7038

19 OIL

03612594222, 03612594188, 03612594214, 03612594321, 03612594245, 03612594165


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WORKS MAIN CONTROLLER GROUP

S No.

Name

Designation

Telephone

Office Residence

1 Barpujari Jogen ED 2657017 2657018

2 G Dasgupta GM(T) 2657043 2657044

3 PatowaryP K DGM (P&U, Inst) 2657015 2657016

4 Ray P C DGM (M&C) 2657021 2657022

5 Barua N K DGM (PN) 2657042

6 Chakraborty N K DGM I/C (HR) 2657005 2657006

7 Baruah S P DGM (TS) 2657009

8 Sarma A B (Mrs) DGM(Admin,CC,CSRA) 2657033 2657261

10 Hazarika Dilip DGM(Security)-NE 2657003 2657004

11 Sarma D K DGM(MN) 2657011 2657012

12 Singh R B DGM(PJ) 2657252 2657253

13 Jain P K DGM(ES,Insp)

14 Kumar Mahesh CFSM 2657069 2657029

15 Kumar S CTSM-I 2657030 2650011

16 Das H K CTSM-II 2657007

17 Sarma K K CPUM 2657134 2657135

18 Roy Amit CMNMEL 2657071 2657074

19 Saha Apresh CIPM 2657023 2657024

20 Sarma P N CM (IS) 2657260 2657260

21 Das Monika (Ms) CM (HSE) 2657013

22 Kumar A P CMNM 2657019 2657020

23 Das Kanu CESM-II 2657014

24 Sarma Amiya Kr. Dr. CMO 2657130 2657825

25 Kachari C CPJM 2657067

26 Vardhan Sanjay CMTM 2657055 2657065

27 Sen J K CFM 2657136

28 Ishorary G CM(A&W,CSR) 2657059

29 Chakraborty S CHRM 2657061

30 Nagen Baglari DC (CISF) 2657034 2657035

31 Mazumder P K SMNMCL (I/C) 2657068


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6.7.7 Responsibility of Police Department – Security & Vacuation

1. Commissioner of Police, Guwahati will be the overall authority for

security, evacuation, rescue operations, law and order and road traffic control in times of emergency.

2. Evacuation of population is not necessary and not recommended

in all disasters. It is, at times, advisable to make people stay indoors and close their windows and doors. Evacuation of

population is a very difficult task requiring massive resources at a very short notice. It is, therefore, essential that evacuation be

done on a very selective basis in consultation with WMC.

3. Police Department will have detailed plans for rescue operations and evacuation of different locations for all possible incidents and

wind direction. These plans must be based on realistic

assumption of resources available and time required gathering these resources. The role of Police will include the following :

a) Informing public, COEC/ DCOEC, emergency services as

identified in the organization structure.

b) Control of Traffic: Rail and road traffic will have to be diverted to safeguard people and keep escape routes

clear. Stopping the road traffic Chandmari and Narangi and rail traffic at New Guwahati and Narangi turning on

either side of the Refinery may considered.

c) Mobilising City Traffic Patrol Party, cordoning off affected areas, assisting Fire Fighting personnel, assisting medical

services, evacuation of population, maintaining law and

order.

d) Equipment to be carried by Police

Apart from normal police equipment, it is necessary that Police force should also be equipped with personnel protective equipment for

respiratory and body protection. This may include steel O.G. helmets, gas mask water bottle, ear plugs etc.

6.7.8 Role of Fire Services

Director State Fire Service will be the overall in-charge for fire

services. He will act as Fire Commander. During the Off-Site Emergency, the main role of fire services will be:


C6 - 20


➢ Fire fighting

➢ Spraying water to knock down toxic gases/ vapours. ➢ Washing away spilled chemicals.

➢ Rescue of people trapped in fire.

Fire Services must be aware of the properties and behaviors of various industrial chemicals. While fighting an emergency they themselves

should not be got affected by the toxic gases or any other harmful chemicals. Proper protective equipment should be used for this

purpose.

All other fire brigades, belonging to different organizations in Guwahati City will work under the Fire Commander.

Equipment to be carried by the Fire Fighting Personnel

Fire Services should have adequate number of following items:

➢ Fire tenders and foam tenders. ➢ Portable fire pumps.

➢ All other items/ materials required for fire fighting and rescue operation.

The Fire Services should also be equipped with adequate supply of

personnel protective equipment. These will include:

➢ Protective PVC suits and fire units. ➢ Self contained breathing sets and compressor for refilling the air

bottles. ➢ Canister type gas masks etc.

6.7.9 Role of Medical Services

The Chief Medical Officer, Kamrup (M) District will be in overall charge

of medical services to be rendered to the affected population both at site of the incident and at the location where evacuated population is

sheltered. Quick medical treatment of people injured in a major industrial

accident is essential. Medical Services should be geared up to meet special requirements of an industrial accident, and carry adequate

stocks of organization medicines/ antidotes. A two tier medical

organization is proposed for this purpose. All chemist and druggist shops should be opened immediately after the accident, if the shops

are not otherwise open.


C6 - 21


FIRST AID POSTS:

These can be located near affected locality and provide immediate medical aid. They will also evacuate people on priority for medical

treatment.

HOSPITAL: Local Hospitals will treat patients in emergency wards. For the purpose

a complete list of hospitals with resources available and beds earmarked for taking care of Off-Site emergencies will be kept

available with the CMO, Guwahati Refinery.

List of Hospitals and specialist Doctors available in Guwahati City are given below:

LIST OF SPECIALIST DOCTORS

SL.NO NAME SPECIALISATION PHONE NO.

1 Dr. T C Hazarika Pediatrics 94350-40796

2 Dr. Nilakshi Baruah Eye spl 8822095391

3 Dr. Madhumita Lahkar Radiologist 9864057082

4 Dr. Rani Manjula Das Pathologist 9085835993

5 Dr. R J Das ENT 98640-93902

6 Dr. Asif Ahmed Dentist 98640-97338

7 Dr. R A Sinha Homeopathy 94351920522

8 Mr. Mukul Deka Audiologist 9854590158

9 Dr. D.K.Barman Homeopathy 98640-93970

10 Dr. R Sinha Homeopathy 9435192052

11 Dr. Daisy Mon Deka Physiotherapist 98540-44344

12 Dr. N J Borkataki Neurologist 9435116504

13 Dr. M.Goswami Consultant Surgeon 9435193724

14 Dr. H Talukdar Dermatologist 9435149328

15 Dr. G.Dutta CDMO 9954044811

16 Dr.S.Das. CDMO 9508538932

17 Dr.K.B.Baruah CDMO 7896891059

18 Dr.Prasenjit Goswami CDMO 9435113294

19 Dr. Jharna Deori CDMO 9854043950


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DETAILS OF THE MEDICAL FACILITIES AVAILABLE OUTSIDE THE REFINERY

HOSPITAL/NURSING HOMES

BLOOD BANK S./NO CENTRE TEL.NO

1 GMC Hospital 2529457/2528417

2 Assam Gujrat Volantary Blood Bank and Research Centre

2524939/2541939

3 Maruwari Yuva Monch 2516798/2542074/2547251

4 Ganga Lab. & Blood Bank 2456616

5 Dr. H. Islam ,Medical Director, GMCH 26629774 ( R )

AMBULANCE SERVICE

S.NO SOURCE TEL. NO

1 Lions Club 2204577,2544235, 2544155

2 Red Cross 2665114

3 GLP Social Circle 2737373

4 Prof. Uday Dutta Memorial Ambulance Service 98640-27534, 98640-27535

5 Maruwari Yuva Manch 2542074, 2547251

6 GMCH 2529457

7 GNRC 98640-10000 (M)

8 GUMTA 98640-16740

9 Swargarath 2544355/2544356

S.NO NAME OF THE HOSPITAL NO. OF BEDS

DIST. IN KMS. TELEPHONE NUMBERS

01 Gauhati Medical College & Hospital 15 0361-2529457/21314538/2134539

02. MMC Hospital 350 7 2541477/2543998

03. Down Town Hospital 200 10 2331003/2330678/9435012669

04. Neurological Research Centre 88 10 2227700/2227702/2227703/ 2227704

05. Dispur Polyclinic 70 11 2260864/2220769/ 2262652

06. Borthakur Clinic 45 6 2546233/2543411/ 2730982

07. East End Nursing Home 40 3 2550334

08. NEMCARE Hospital 30 12 2528587/2455906/2457344

09. Central Nursing Home 27 12 0361-2262044

10 Good Health Hospital 10 2263407/2268230

11 Wintrobe Hospital 7 2522860

12 International Hospital 9 2347700/2347701-3/ 2347702/ 2347715


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6.7.10 Role of Railways

• NF Railways will have their own task force to tackle the emergency as soon as the same is declared.

• To move out loaded railway rakes from refinery BG Unloading gantry if the situation so warrants.

• To get in touch with DC/ concerned officials of District Administration and Guwahati Municipal Corporation.

• To stop train movement between Naraengi & New Guwahati Station if the situation is so warrants.

6.7.11 Evacuation & Rehabilitation

Safeguarding General Public If a major industrial accident does occur, the general public in

surrounding areas will have very little time to reach and save themselves. The local population will have to be warned in a very

short period.

In case of disaster the time available to population for a safe escape will depend on the nature of disaster.

➢ A fire will give more time to escape and generally area affected will be small. Effects of a fire on population will be injuries due

to thermal radiation.

➢ An explosion will give little time to warn population and area affected may be much larger than that in case of a fire. Effects

of an explosion on the population will be injuries caused by pressure shock wave, flying splinters, collapsing structures as

well as exposure to thermal radiation.

➢ A toxic gas release will generally threaten a much larger area and people will be exposed to drifting cloud of toxic gas/

vapours. Time available for warming population will depend on the point of release, wind direction and wind velocity.

Actions by General Population On being warned of a major industrial accident, general public should

take the following actions immediately.

➢ Immediately go indoors. ➢ Shut all doors, windows, ventilators. Block all the gaps with wet

cloth and curtains. ➢ Switch off fans, exhaust fans, air conditioners, and refrigerators.

➢ Extinguish all flames. ➢ Keep torches handy. Stores water for emergency use.


C6 - 24


➢ Do not jam emergency phone lines by calling emergency

services. ➢ Covering nose/ mouth with wet cloth will help.

➢ Wait for further instructions from emergency services before moving out.

Evacuation & Service to Displaced People

In a major accident/disaster, it may be necessary to evacuate people from and around the area likely to be affected by the accident.

Sometimes, evacuation has to be made to a safe place at a little distance, at other times, specially at the time of catastrophic disaster,

it is necessary to shift population outside the refinery locality to a predestinated place in the city, fixed in advance.

The Commissioner of Police, Guwahati shall act as Commander-in-

charge of Evacuation. He will determine in consultation with the COEC,

the extent of evacuation necessary in view of the likely hazards of disaster. The Police and Civil Defense will activate the machinery for

quick and timely evacuation. Evacuation Commander shall requisition transport (buses/trucks) as available from plying vehicles

(buses/trucks) near refinery site and also requisition from the Assam State Transport Corporation depots. For effecting evacuation, it will be

necessary to fix pick up points (state Bus stoppage) at different areas in advance so that the residents are aware of their nearest pick up

points in the event of a disaster. Without losing time the buses will form queue and shift the boarded public to the designated shelter.

The entire area to be evacuated is to be divided into convenient

sectors and each sector to be placed under the supervision of a senior police officer (Warden) whose duty is to ensure that public in his

sector are compulsorily evacuated.

Repeated announcement to be made over mobile vans/jeeps, fitted

with PA system directing people not to be panic, and quickly board the buses/trucks at pick up points earmarked in advance. The route of

shifting evacuated public to the selected shelter is to be decided and accordingly drivers of the buses/trucks to be briefed to follow the

same strictly. The selected route up to the shelter destinations to be made free of traffic movement by cordoning off and upon activation of

the machinery when the COEC declares the need for evacuation. Guwahati Municipal Corporation/ District Administration which will

make arrangements for transport, shelter, food, drinking water and sanitation to the evacuated people. Quick and timely evacuation will

save lot of lives and therefore, liaison between various functionaries of the District, Police, Civil Defense to be maintained for timely and quick

evacuation when the situation warrants.


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In case of power failure, which is not unlikely, the evacuation work,

especially at night time, will be totally disorganized unless alternative arrangements like battery operated or diesel-operated flood-lights /

lights / torch are kept in readiness for emergency use during evacuation.

In addition, the following requirements will also be taken care of:

➢ Monitoring the shelter camps and the evacuated localities till such a time that normalcy is restored.

➢ Ensure proper care of the evacuated people in shelter relief camps and provide them adequate facilities such as food,

drinking water and medical services. ➢ Ensure security arrangement for protection of the evacuated

people’s property in their areas till such time they are safely brought back to their homes from the shelter camps.

Public Education

Educating general public about the potential hazards associated with refinery and actions to be taken in case of accident, will one of the key

areas of Disaster Management plan. For this purpose, the following actions are to be done:

➢ Pamphlets/ booklets regarding industrial hazards will be prepared

and distributed to general public of the concerned area. ➢ Notice boards will be put up in strategic places giving the above

information. ➢ Help of voluntary organizations and local schools will be taken to

conduct educational sessions to make people aware of the actions that the general public should take in case of any major

emergency.

Monitoring Committee

A monitoring Committee shall be formed by the District Administration to ensure the effective preparedness of the Off-Site Plan. The

Committee shall meet regularly at least every six months and shall conduct Mock-drills at least once a year. The Committee shall review

the effectiveness of the mock-drills and take remedial measures for further improvement. The members of the committee shall be,

• Deputy Commissioner, Kamrup (M) District

• Unit Head (ED/GM), Guwahati Refinery • Additional Deputy Commissioner(DDMA), Kamrup (M) District

• Commissioner of Police, Guwahati • CM (HSE), Guwahati Refinery- Secy. Of the committee


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6.8 DO’s AND DON’Ts IN EMARGENCY SITUATIONS

A. GENERAL GUIDELINES FOR THE PEOPLE RESIDING OF REFINERY

IN CASE OF EMERGENCY SITUATION AT GUWAHATI REFINERY.

DO’s • Don’t be panic, keep cool.

• If any gas leakage is reported, move either side perpendicular to wind direction towards a safe place.

• Keep wet cloth on the nose and breathe normally. • Immediate close LPG stoves/burner and extinguish the fire in

chulla or any open flame with water in and around the house. • Immediately put off any open flame like candle, lantern, heater

etc.

• If evacuation is called for, lock the house and be ready. • Help the evacuation process by following instructions and

assembling at the pick up points immediately.

DON’Ts • Do not put “ON” or “OFF” any electric switch. If any electric switch

is: ON” keep it in “ON” position only. • Do not smoke and do not allow anybody to smoke.

• Do not pay attention towards rumors and do not spread any rumor also.

• Do not use any personal vehicle. • Do not block any public area.

• During any emergency situation, do not unnecessarily talk on phone.

B. DO’s AND DON’Ts FOR EARTHQUAKE

Before an Earthquake When at home

➢ Arrange your house in such a way that it is possible for easy

movement, clear entry and exit ➢ Make plan and emergency kit

➢ Keep a torch, Cell phone ➢ Do not keep heavy object in upper shelves

➢ Teach all members of family “How to turn off electricity, water and gas”

➢ Keep emergency contact Nos. readily available (Medical, Fire fighting, Police)


C6 - 27


During an Earthquake When at home

➢ Keep calm and keep others calm

➢ Do not rush to the doors or exit ➢ Do not use lifts

➢ Keep away from windows, mirrors, chimneys and furniture ➢ Protect yourself by staying under the lintel of an inner door, in

the corner of a room, under a table or bed ➢ Do not use candles, matches or other open flame.

During an Earthquake When on street

➢ Walk towards an open space. ➢ Do not run or wander

➢ Keep away from buildings, electrical wires, and trees etc which

are liable to collapse.

During an Earthquake when driving

➢ Stop as quickly as possible and stay in the vehicle. ➢ Stop the vehicle away from buildings, walls, electrical wires etc.


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7.0 Environmental Management Plan Envirotech East Pvt. Ltd.

CHAPTER-7.0

ENVIRONMENT MANAGEMENT PLAN

7.0 INTRODUCTION Environmental Management Plan is aimed at mitigating the possible

adverse impact of the project and key to ensure that the environmental quality of the area will not deteriorate beyond the

expected level due to the commissioning of the proposed project. The management plan, therefore, covers all aspects of the

construction and operation of the proposed BS-VI project, related to environment.

The management plan needs to be implemented right from the

conception and should continue till the end. The Environmental

Management Plan can be divided into three phases - (a) During design phase, (b) During constructional phase, and (c) During

operational phase.

Guwahati Refinery has a full-fledged Environmental Management System right from the inception of the refinery. For its endeavour

for continual environment improvement through the adoption of advanced technologies in compatibility with the international

standards, it has been accredited with the prestigious ISO-14001 certification.

7.1 DURING DESIGN Design Safety and Environmental Plan

Preparation

The Design Safety Plan shall be prepared by the EPCC Contractor at commencement of the Project.

The Design Safety Plan shall include as minimum:

❖ The principal safety activities; ❖ Those responsible for executing them;

❖ When they should be performed to ensure that any conclusions can be incorporated with no or minimum, adverse impact on the

Engineering, Procurement Construction & Commissioning programme;

❖ The Design Safety Plan shall include, as appropriate, the followings:


C7 - 2


➢ Safety objectives in terms of risk reduction, loss reduction,

minimisation of environmental impact. ➢ List of National/ International, Statutory, Legislative and

Client requirements including relevant Codes.

Standards, Statutory Instruments ❖ List of safety reviews to be undertaken.

❖ Safety review/ audit requirements ❖ Schedules of discharges to air and water and solids for disposal

❖ Statutory regulations and codes giving limitations and procedures to be followed to obtain statutory authority consent

to applications for discharge.

7.2 DURING CONSTRUCTION

General The contractor shall submit his HSE (Health, Safety & Environment)

Plan to Guwahati Refinery for review and approval. The Plan shall not be limited to, but, in general, shall include the following items:

Traffic Safety

❖ Vehicle shall not exceed the speed limit of 25 Km/hr inside the plant premises.

❖ All vehicles shall be maintained in safe & roadworthy condition.

❖ The contractor shall avoid traffic congestion and abide by the traffic rules by deploying trained and licensed drivers.

Fuel and Sanitation

❖ The project management shall take adequate steps to ensure suitable sanitary facilities for the workers. These facilities include

water supply, sanitary toilets and waste treatment etc. Otherwise, the local land and water courses may get polluted.

❖ Contractors shall arrange the supply of fuel to the construction workers so that the local trees are not felled to meet the fuel

requirement. The Municipal Solid Waste (Management & Handling) Rules, 2000 also prohibits the burning of leaves.

Handling & Storage of Hazardous Chemicals ❖ Hazardous chemicals/materials like oils, paints, and other

chemicals etc. which are hazardous in nature shall be stored

safely. ❖ Contractors shall enlist all chemicals on stock at the

Construction Site including details: ➢ the type of the chemicals

➢ the quantity ➢ the composition

➢ health hazards


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➢ the method of treatment in case of exposure

➢ safety precautions

Emission & Noise Control ❖ During construction, the contractor shall take adequate

measures (e.g. water spraying) to avoid dust emissions. ❖ The contractor shall ensure proper upkeep of the construction

equipment to avoid smoke emissions from the same. ❖ Construction material/ the debris shall be transported with

proper cover to avoid the fugitive emissions of dust. ❖ The equipment shall comply with the Statutory limit of 85 dB(A)

(at 1 m. from the source).

Waste Collection & Disposal ❖ Waste has been categorized as: wood, metal, chemicals, paper,

plastic etc.

❖ The impact of waste shall be reduced through segregated collection.

❖ Besides, during mobilization, construction, demobilization and commissioning of the project, the contractor shall minimize the

waste burden through proper material selection. ❖ The Contractor shall provide a sufficient number of metal

containers on-site to store trash and debris resulting from their operations. The Safety Engineer, deputed by the contractor is

responsible to monitor it at site. ❖ No waste, regardless of composition, shall be drained to sewers,

trenches, ditches or channels. ❖ Hazardous waste disposed off during the construction activities

shall be registered in a Waste Log by the contractor. Waste shall be stored in such a way that it is not accessible to unauthorized

persons.

❖ Waste handling shall be in compliance with applicable Legislation.

Personal Safety

❖ The contractor shall provide his workers with Personal Protective Equipment (PPE) (e.g. Dust Mask, Ear Plug/ Muff, Hand Gloves

etc.). ❖ The contractor shall maintain First-aid Facility at the site & also

an ambulance for proper medical care of his workers.

Review of Contractor’s HSE performance ❖ The Contractor shall submit the HSE performance periodically to

Guwahati Refinery.


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❖ Based on the review by Guwahati Refinery, the contractor shall

make suitable changes in the plan and take corrective & preventive actions.

7.3 DURING OPERATION Environment Conscious Design

The process design of the refinery has given special importance to

maintain the quality of environment during operation. In the

proposed BS-VI project, there will be no additional stack. Air emission of the refinery shall remain at the existing level.There will

be no additional solid waste generation.

Wastewater management will be given special priority. The waste

water, to be generated from the operation of the proposed BS-VI project will undergo the necessary treatment in the existing ETP of

the refinery. The major part of the treated effluent will be recycled back to the refinery and the balance will be discharged into

Brahmaputra River as per the existing practice.There will be no additional treated effluent discharge after BS VI project.

Major noise generating sources from the project will be equipment

like compressors, fans, motors etc. However, they will be designed so as to limit the noise levels to <85 dB(A) at 1 m from the

equipment thereby limiting the noise level within the specified limit

as per MoEF&CC guidelines for 2018.

GuwahatiRefinery has a separate environment cell to implement all these activities properly.

Guwahati Refinery has taken various mitigation measures in its

existing operation, which are highlighted below:

1. The Refinery has progressively improved its operations in terms of energy efficient state-of-the-art technologies and

production of clean fuels meeting emerging quality requirements. The Indane Maximisation (INDMAX) technology

is an in-house technology developed by R&D Centre of IndianOil designed to achieve LPG yield as high as 44%. The

INDMAX technology was first commissioned at Guwahati Refinery. Besides its function of maximization of LPG, it

enables the Refinery to upgrade its residual products to high value distillate products.

2. Besides various other energy conservation measures, it also includes condensate recovery system, calcium silicate

insulation and pressurized cooling water system, which has


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resulted in water conservation. Sulphur Recovery Units (SRUs)

have sulphur recovery efficiency of 95%.

3. Heaters, furnaces and boilers are operated with optimum

quantity of air so that fuel consumption as well as emission of NOx is minimized.

4. Low NOx burners are provided in the furnaces of CDU, DCU, HDT, HGU & MSQ units to maintain NOx emission from the

stacks within the prescribed limits.

5. There isone automatic (continuous monitoring type) Ambient

Air Quality Monitoring Station (AAQMS) in the refinery premises. Besides, another four no. fixed stations are also

operated, considering predominant downwind direction, locations of major stacks, locations of maximum short-term

Ground Level Concentrations (GLCs).

6. Continuous on-line analyzersfor SO2, NOx, PM&CO are installed

at all the stacks of the refinery along with their linking with

CPCBfor providing online data.

7. Hydrocarbon leak detectors are provided in the plant area at

the strategic locations.

8. The ambient noise levels conform to the standards prescribed

under EPA Rules, 1989 viz. 75 dB(A) (day time) and 70 dB(A) (night time). The equipment noise limit is 85 dB(A).

9. A number of efficient mechanisms for water pollution prevention and control are in place in the Refinery. It has

modified the API Separator by which there will be further improvement of oil separation efficiency. It has procured a

Total Organic Carbon Analyzer for monitoring treated effluent quality before discharge. A chlorinator that is used to combat

slime and algae formation is under installation to provide continuous treated effluent chlorinated water. Online analyzers

for monitoring of treated effluent quality have been installed

for the parameters pH, TSS, COD & BOD. Flow meter is also available for daily monitoring of the treated effluent quantity.

10. Most of the treated effluent is recycled and shall be continued. The remaining quantity of the treated effluent is/ shall be

discharged into Brahmaputra River. For conservation of fresh water, rainwater is captured and used.


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11. Online analyzers for monitoring of treated effluent quality (pH,

TSS, COD, BOD) have been installed in Dec’15.

12. Hazardous oily sludge, generated at Guwahati Refinery is bio-

remediated through M/s The Energy & Resources Institute (TERI) & e-waste, disposed to authorized vendor by auction

through MSTC. Spent catalyst is disposed to authorized recyclers by auction through MSTC.

13. Biological sludge (non-hazardous in nature) from ETP is used as bio-manure for the greenbelt of the refinery.

14. Groundwater monitoring is carried out regularly.

15. With a view to propagating use of non-conventional

energy, Solar energy schemes are implemented in Guest House, Admin Building and Plant Canteen for heating 2700 LPD

of water [Plant canteen with 1500 LPD capacity of solar collectors (flat plate collectors (FPC)), ADM pantry with 200

LPD capacities of solar flat plate collectors (FPC), Guest

House with 2 nos. x 500 LPD capacity of solar collectors (flat plate Collectors (FPC))]. It results in around 23000 unit power

saving per annum.

16. 30 nos. 2X11W CFL Street lights have been installed on trial

basis within the Refinery. A power saving of nearly 80000 KWh per year is envisaged.

17. As an initiative towards green energy, Light Pipe installation has been carried out at Electrical workshop.

Light Pipe is a green energy initiative of day lighting of big sized sheds, buildings by harvesting sunlight.

18. A dedicated cell manned by qualified engineers to coordinate all activities related to Environmental Management in the

refinery already exists.

19. Full-fledged pollution control laboratory having modern &

sophisticated equipment and manned by qualified personnel is

already set up.

20. A full-fledged Occupational Health Centre (OHC) already exists

for work environment monitoring & health monitoring of employees.

21. The On-site & Off-site Emergency Preparedness Plans already exist.


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22. Measures for control of VOCs (Volatile Organic Compounds)

❖ Closed blow down system in process units.

❖ Closed system for carrying wastewater streams to ETP. ❖ Hydrocarbon Monitoring with LDAR Programme in the plant

area.

7.4 CORPORATE SOCIAL RESPONSIBILITY In line with IndianOil’s responsibility towards the

society,GuwahatiRefinery has been undertaking various Community

Development activities since very long for the welfare and upliftment of surrounding areas. The CSR agenda of the Refinery

focuses on three broad areas of education, health care and providing water supply. Initiatives taken under these heads are

participative in nature with community participation in a partnership model for ensuring sustainable development of the

community.

In its endeavour to fulfil its commitment in promoting numerous such activities, it has identified specific areas, to be covered along

with the budgetary allocation.

Guwahati Refinery has allocated around Rs. 500.00 lacs towards undertaking the following new CSR projects for the year 2018-

19:

Sl

. Project beneficiaries Purpose

Amoun

t (Rs in

lac)

NEW PROJECTS

1

Students of Chemical Engineering

Deptt., Assam Engineering College,

Guwahati

Petroleum Laboratory equipment

facilities (True Boiling Point

apparatus for crude oil) at

Chemical Engineering Deptt of

Assam Engineering College

20.00

2 25 nos. "economically weaker section"

student beneficiaries from Kamrup

district

Job-oriented “Diploma in Hotel

Management” courses at Food

Craft Institute (3rd batch)

23.90

3 10 students (from 2017-18) batch, 2nd

year course expenses undergoing

residential medical laboratory

technician course at Asian Institute of

Paramedical Sciences, Guwahati

Paramedical training as Medical

Lab technician (1st batch / 2nd

year course fees)

9.80

4 220 beneficiaries (i.e. 100 Geriatric

Aide + 120 Housekeeper-cum-cook),

skill-dev programme beneficiaries

under National Skill Development

Corporation

Imparting of job-oriented short-

term skills in geriatric aide &

housekeeper-cum-cook trades

thru National Skill Development

Corporation (NSDC)’s approved

Guwahati based training partners

45.42


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5

Youth from economically marginalized

households of Greater Noonmati

Annual expenses (2018-19) on

ongoing subsidized computer

literacy programme at CD Hall,

under supervision of Noonmati

Students Union

1.60

6

Students of nearby select schools,

identified for CSR interventions in the

form of classroom furniture items

Classroom infrastructure

development at nearby

educational institutions to the

extent possible @ Rs.1.50 lakhs

per beneficiary schools, viz.

Bhabanipur HS, No.1 Mathgharia

LPS, Madhabpur LPS, Narengi HS,

Narengi LPS,

PanchadeepJatiyaVidyalaya

(Patharquary), Doimuguri LPS

(Fatasil), Janasimalu HS

(Batahghuli), JagaHarijan LPS

(Uzanbazar), Mangalchandi Hindi

Vidyapith&Mangalchandi Hindi

LPS (Uzanbazar), Adingiri LPS

(Maligaon) &Hirimbapur LPS

(Dakshingaon)

19.50

7 Girl students pursuing science stream

at TC Govt. Girls HS & MP School,

Guwahati

Reconstruction of old & damaged

laboratory building of T.C Girls

Govt. HS & MP School

15.00

8 Girl students pursing vocational

diploma courses at PCPS Girls

Polytechnic, Guwahati

Construction of 3 additional

classrooms on top of existing

building complex

29.80

9 10 girl students (from 2017-18) batch

2nd year course expenses

ANM diploma course at Arya

School of Nursing (1st batch /

2nd year course fees)

14.60

10

10 eligible girl students from Kamrup

district

GNM nurse training (1st batch 1st

yr for the 3 years course) at

Hayat Institute of Nursing

Education, Guwahati. Expenses

for 1st year.

15.65

11 Cancer afflicted children residing at

Deepshika Foundation’s special school,

while simultaneously undergoing both

cancer treatment & formal / specialized

education

Classroom & hostel furniture

items for special intervention

home operated by Deepshika

Foundation for cancer afflicted

children

15.00

12 Transportation for patients undergoing

free cataract surgeries and who were

identified during the outreach eye-

screening camps organized by

SankaradevaNethralaya for cataract

detection at various locations in Assam

Provided a Tata Winger utility

vehicle for supporting the

community outreach eye-

screening & cataract detection

programme of Sri

SankaradevaNethralaya

9.40

13 Financially marginalized patients

attending the free health check-up

camps organized thru Refinery Hospital

Hosting of 5 free health check-up

camps in the vicinity of the

Refinery with field support from

local stakeholders

2.50

14 Financially marginalized patients

attending the free eye-screening camp

for cataract detection organized thru

SankaradevaNethralaya

Hosting of an eye-screening camp

for cataract detection thru

SankaradevaNethralaya, with

estimate inclusive of cataract

1.50


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surgeries and prescription

spectacles for economically

marginalized patients

15

Support to cancer patients seeking

assistance from Guwahati Refinery for

their treatment

Reimbursement to Dr. B Borooah

Cancer Institute for extending

free treatment to GhyRefy’s CSR

forwarded cancer patients from

economically marginalized

households

3.00

16 Engaged highly-skilled contractual

diploma civil engineer at CSR section

Wages for the engaged highly-

skilled contractual diploma civil

engineer at CSR section

4.65

17 14 young boys at the orphanage

NoonmatiShishuMangal Kendra

Annual supply (2018-19) of

nutritious rations & toiletries thru

M/s. GRECS

0.75

18 Patients attending the free health

screening camp organized by the

pensioners’ association

Medicines for the outreach health

check-up camp 0.20

19

200-250 PwD beneficiaries from

Economically Weaker Section residing

within a 50 KM radius from GR

Implementation of an assistive

devices distribution programme,

after selection of eligible PwDs

thru implementing agency

Artificial Limbs Manufacturing

Corporation of India (ALIMCO) on

deposit work basis

20.00

20 Office bearers & members of the

amateur theatre group

Construction of a conference hall

at the existing complex of New

Arts Players, Guwahati

30.00

21 Livestock owning households at

Kajalichaki& adjoining villages

Hosting of a cattle vaccination-

cum-treatment camp at

Kajalichaki thru NGO: Early Birds

0.20

22 Students at Assam Engineering

Institute, Guwahati Construction of a "Yoga Hall" 17.53

sub-total 300.00

SWACHH BHARAT ACTIVITIES

1

Public & commuters needing public

convenience facilities

Construction of 5(five) nos. of

"Pay & Use" public toilet blocks

on space provided by Guwahati

Municipal Corporation (GMC)

within Guwahati city having the

need for such facilities, for &

behalf of Guwahati Municipal

Corporation

55.00

2 Residents of harizan colonies under

GMC

Construction of a community

toilet block at harizan colony near

Ghy Club railway flyover

10.70

3

Students of five nearby beneficiary

educational institutions

Providing functioning sanitary

toilets at nearby educational

institutions, thereby, improving

students attendance at schools

and motivating them to continue

their school education with

18.00


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availability of this basic necessary

facility

4 Students & staff of GopinathBidyapith

(Silpukhuri)

&BamunimaidamNimnaBuniyadiVidyala

ya

Installation of stand-alone

drinking water facilities through

deep bore-well at these two

schools

10.00

5

Elderly residents at MARTI KALYAN Old

Age Home, Hengrabari, Ghy

Installation of a stand alone deep

bore-well, along with a sanitary

toilet complex at the old age

home

7.99

6

General public

Mass tree plantation at various

places like CSR project sites &

NHs, thereby, contributing to

sustaining the green cover, while

also facilitating carbon

sequestration, along with,

conservation of plant bio-diversity

10.00

7

Tourists & visitors to the iconic place

Infrastructure development along

with medicinal, fruit bearing &

ornamental tree plantation at an

iconic place near Guwahati

20.00

8

General public of Guwahati city

Providing Guwahati Municipal

Corporation with 60(sixty) nos.

tricycles with fabricated truck-bed

section for transportation of

segregated household waste in

separate colour coded bins from

select municipal wards, to

designated collection points for

subsequent bulk transportation to

processing / recycling plants by

GMC’s garbage compactor trucks

14.16

9

General public

Providing public dustbins to CSOs

/ NGOs, for redistribution to

community welfare associations

like schools, bazar samities,

unnayansamities, places of

worship, community grounds like

festival venues, etc.

8.00

10

District Hospital, Sonapur

Providing a Tata Super Ace mini

pick-truck to the hospital for

transportation of bio-medical

waste for incineration at M/s.

Fresh Air, Panikhati

4.15

11

10 educated unemployed youth from

Hajo.

Procurement & providing 20 nos.

e-Rickshaws for promoting &

facilitating pollution free local

transportation services at the

pilgrimage town of Hajo

20.00

12 Public & commuters needing public

convenience facilities

Construction of 1(one) "Pay &

Use" public toilets on space

provided by Tezpur Municipal

10.00


C7 - 11


Corporation

13

Municipal Corporation of Mangaldai,

the district headquarters of Darrang

aspirational district

Providing 2 nos. garbage

transporting vans (Tata Ace

Hopper-Tipper of 1.8 CM

capacity) for efficient removal of

garbage from municipal areas for

transportation to processing /

recycling plants, along with 35

nos. GI waste bins

12.00

sub-total 200.00

RHQ allocated budget (2018-19) for

New Projects: 300.00 Lakhs

RHQ allocated budget (2018-19) for

Swachh Bharat Activities: 200.00 Lakhs

Total allocated CSR budget for

2018-19: 500.00 lakhs

Apart from several initiatives, the refinery had decided to re-launch “IndianOilGyanodaya” scholarships, wherein Guwahati Refinery

would implement from 2017-18 onwards at four nearby

government institutions viz, 2 ITIs and 2 polytechnics [ITI-Guwahati, ITI for women (Guwahati), Assam Engineering Institute

and PCPS Girls polytechnic college (Guwahati)].

The refinery has already completed a series of CSR activities in several areas till date. The relevant details of the activities,

undertaken in the year 2017-18 are presented in Appendix A.

7.5 GREEN BELT DEVELOPMENT Tree plantation is a regular activity at Guwahati Refinery. Till date,

around 38000 trees are existing in the refinery and township areas.

In the year 2014-15, tree plantation carried out by adopting Japanese Akira Miyawaki Model of Environment Forest Plantation

under guidance of CPCB, Shillong. Akira Miyawaki Model of plantation elaborates how to plant a “dense forest” for

environmental protection instead of planting a tree. Total 2500 tree samplings were planted in township areas in 2014-15 and 1000

trees in 2015-16.100 nos. trees were planted in GR land area on 1st June, 2016.Another 100 trees have been planted on State Highway

(NH-37) on 3rd June, 2016.


C7 - 12


Under Sustainability programme,Guwahati Refinery shall

continuously keep on planting more and more trees in future.

Guwahati Refinery had signed an MOU with NHAI on 2nd November, 2016 for plantation of 5000 nos. of Trees along the NH-

31 under depository work basis to make the Petrotech, 2016 event carbon neutral. Plantation of all 5000 trees was carried out by

May’2017.

Additional plantation of 1000 trees for the year 2017-18 has been carried out in AEC premises, Guwahati in collaboration with AEC.

200 trees were planted in July, 2018 as a part of Swachchata

Pakhwada, 2018.

ECO PARK

Guwahati Refinery is extensively engaged with many initiatives to protect the environment, to prevent pollution and restore the

biodiversity of this area. In this connection, it has undertaken massive tree plantation including plantation of local plants,

development of eco parks etc.


C7 - 13


To maintain its harmony with the environment, IOCL Guwahati

Refinery has developed 3 eco parks in its townships, namely Sector I, Sector II and Sector III, details of which are given below.

Area of ecological parks at various sectors of GR is given in the

following table:

Sl.No. Location Area Unit

1 Sector - I 5500 m2

2 Sector - II 4200 m2

3 Sector - III 6500 m2

The Eco parks are well maintained by dedicated gardeners. Being in an ecologically sensitive area, great care is taken to maintain the

biodiversity of the area. The eco parks are also a visiting place to a variety of native animals and birds like deer, rabbits, monkeys,

fox, mongoose, snakes, Chameleon, lizards, ducks, swans, sparrows, crows, kingfisher, cuckoo, cranes, eagles etc.

Moreover, an herbal park of area 1533.35 m2 was developed near

Sector-II.

Date palm in GR eco park Cashew plant in GR eco park

Jackfruit in GR eco park Mango in GR eco park


C7 - 14


Also, an herbal park of area 1533.35 m2 was developed near Sector II, which hosts a variety of medicinal plants. The eco parks are also

a visiting place to a variety of native animals and birds.

Sector I eco park

Sector II eco park Sector III eco park

Ducks and Swans in Sector I

Eco Park

Cranes in Guwahati Refinery


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7.6 OCCUPATIONAL HEALTH & SAFETY Crude oil refining involves storage, handling and use of several

chemicals. These may be raw materials; the chemicals needed for

utilities like water treatment, wastewater treatment, power generation etc. The products are also a new group of chemicals.

Some of these chemicals are very important for safety of the employees and for the plant. Besides the safety, the employees’

health status is also important which may be affected due to exposure to these chemicals. The exposures may be sudden and

accidental or may be for a long period. In both these cases, there will be different health effects. Therefore, safety measures in

dealing with these chemicals are of vital importance.

The health and safety aspects of the important toxic & chemicals are discussed below:

7.6.1 HEALTH & SAFETY ASPECTS OF HAZARDOUS & TOXIC CHEMICALS

Respective MSDS should be made available at the site, which should be followed for safe handling & storage of chemicals.

Safety Procedures

All chemicals are poisonous. It is the dose of a particular and/ or the route of entry, which determines the severity of poisoning. The

Manufacture, Storage and Import of Hazardous Chemicals Rules 1989, notified by the Ministry of Environment, Forest and Climate

Change have listed 436 chemicals, which may lead to poisoning depending on dose and route exposures. Such chemicals are used

in this plant. The safety procedures to be taken when exposed to

these chemicals are discussed below.

Monkey in Guwahati Refinery


C7 - 16


7.6.2 BRIEF OUTLINE ON HUMAN RESPONSE TO CHEMICAL

EXPOSURE AND THEIR SYMPTOMS, FIRST AID AND TREATMENT

Handling of hazardous chemicals involves risks to workers as they are constantly exposed to these chemicals during various

operations and storages. In the event of an accident, not only the workers, but also the general public can be exposed to dangers.

The problem of medical treatment of the victims is aggravated by the fact that there is paucity of information on the antidotes

required for these chemicals. For detailed information on Hazardous Chemicals and their symptoms on exposure along with First-aid

and further treatment, “Handbook on Medical Management of Industrial Emergencies, their First aid & Treatment”, published by

Thane – Belapur Industries Association, Mumbai may be referred.

Symptoms

The strong acids exert primarily a local corrosive effect on the skin and mucous membranes. In severe burns, circulatory collapse may

result.

Symptoms include severe pain in the throat and upper

gastrointestinal tract, marked thirst, bloody vomits and difficulty in

swallowing, breathing and speaking.

Inhalation of volatile acids, fumes or gases such as chlorine, fluorine, bromine or iodine causes severe irritation of the throat

and chest with paroxysmal coughing and inhibition of respiration,

followed by pulmonary oedema.

7.6.3 FIRST AID AND TREATMENT

Ingested: Treatment as per medical advice Relieve pain and treat shock: Treatment as per medical advice

Skin Contact: Wash with plenty of water and further treatment as

per medical advice. Eye Contact: Wash with plenty of water, holding the eyelids open.

Further treatment may be provided as per medical advice.

Inhalation: Remove from further exposure to fumes or gases.

Check skin and clothing. Further treatment may be provided as per

medical advice.


C7 - 17


7.6.4 FIRE PROTECTION & SAFETY MANAGEMENT

Guwahati Refinery has the foolproof Safety & Fire Management System in Indian refining sector.List of Fire Fighting Facilities

available in Guwahati Refinery are given in Tables 7.1(A) & 7.1(B). List of Fire Fighting Facilities for the Pet coke Boiler project

(under implementation) in Guwahati Refinery are given in Table 7.2.

TABLE 7.1 (A) FIRE FIGHTING FACILITIES AT GUWAHATI REFINERY (PORTABLE)


C7 - 18


TABLE 7.1 (B)

FIRE FIGHTING FACILITIES AT GUWAHATI REFINERY (FIXED)


C7 - 19


TABLE 7.2

FIRE FIGHTING FACILITIES FOR PET COKE BOILER PROJECT (UNDER IMPLEMENTATION) AT GUWAHATI REFINERY

SL. NO.

DETAIL

1 Provision of Fire alarm and smoke detection system. The fire alarm

points shall have to be hooked with the exiting fire alarm network

and its mimic shall have to be mapped in the overall mimic at fire

station.

2 New ISMC (Intrinsically safe manual call points) shall be installed

at various locations of PETCOKE boiler and integrated to existing

MFAPs at Fire building.

There is enough space in the existing Fire Alarm Panel for

incorporation of additional ISMC (Intrinsically safe manual call

points).

3 Additionally modification jobs in the mimic panel to be done

including supply and installation of LED indications in the model GR

plot plan indicating Petcoke Unit location in the MIMIC panel

installed at Fire building.

4 Smoke detection system for the control rooms and sub-stations

strictly in line with relevant IS standards.The newly provided

system will be integrated with the existing system and the mimic

of the new SD and HD will be available in the existing centrally

monitored location of fire and safety building.


C7 - 20


Wearing of appropriate Personal Protective Equipment (PPE) is

mandatory for the employees and contract workers working in plant premises Guwahati Refinery. PPEs of individual use (such as Safety

shoe, Helmet, Hand gloves, Ear plug, Ear muff, Nose Mask etc.) are issued to all such employees of the refinery. PPEs are also supplied to

the visitors to the refinery free of cost for their use during visit of plant premises. PPEs to the contract workers are supplied by their

contractors as per the General Conditions of Contract. Apart from these PPEs which are of individual use, there are several critical PPE

and Rescue facilities/equipment which are available in the refinery. Details of these equipment are given in Table 7.3.

TABLE – 7.3 SAFETY EQUIPMENT AT GUWAHATI REFINERY

SL.NO. EQUIPMENT QUANTITY

1. SELF CONTAINED BREATHING APPRATUS 20 NOS.

2. AIRLINE BREATHING APPARATUS 3 NOS.

3. FIRE PROXIMITY SUIT 2 NOS.

4. PVC SUIT 12 NOS.

5. PVC APPRON 20 NOS.

6. SAFETY HARNESS 50 NOS.

8. FACE SHIELD 10 NOS

9. WATER JEL BLANKET 30 NOS

10. SAFETY NET 40 NOS

11. MULTIGAS METER 10 NOS

12. HIGH BEAM TORCH 4 NOS.

13. LIFTING AIR BAGS 4 SETS

14. VERTICAL RESCUE TRIPOD & STRETCHER 2 NO.

16. LEAK SEALING PAD 2 SET

17. LEAK SEALING KIT 1 SET

18. VACCUM SEALING PAD 1 SET

19. RESCUE SET – HYDRAULIC CUTTER,

SPREDDERAND DRILL

2 SET.

20.

HYDRAULIC PLATFORM 32 METER HEIGHT –

BRONTO MAKE

1 NO.

7.6.5 MEDICAL SURVEILLANCE:

Medical surveillance has been prescribed in the Factories Act, 1948 (Amended). Under section 41C, it is stated that, “every occupier of

a factory involving any hazardous process shall maintain accurate and up to date health records or, as the case may be, medical

records of the workers in the factory who are exposed to any


C7 - 21


chemical, toxic or any other harmful substances which are

manufactured, stored, handled or transported and as such records shall be accessible to the workers subjected to such conditions as

may be prescribed” and provide for medical examination of every worker,

(i) Before such worker is assigned to a job involving the

handling of or working with a hazardous substance and (ii) While continuing in such job and after he has ceased to

work in such job, at intervals not exceeding twelve months, in such manner as may be prescribed.”

OCCUPATIONAL HEALTH SERVICES AT GUWAHATIREFINERY:

Guwahati Refinery has established a full-fledged Occupational Health Centre. It meets all statutory requirements of Factories Act.

Doctors and other staffs are well qualified in the field of OH and are fully equipped to handle various equipment, appliances. OHC

conducts all OH check-ups during pre-employment, pre-placement, Executive, Well person screening and all Occupational Health

check-ups.

FUNCTIONS OF OHC • Identification of occupational health hazards of those specified in

Schedule-I of Factories Act either hazardous substances or dangerous operations.

o Those handling hazardous materials like Benzene, CO, Cl2, H2S, SO2, LPG in different sections of plant.

o Those doing operation like Welders, Loco operator, Drivers, Radiographers.

• Identification of employees identified under target groups for periodical check up.

• Pre-employment screening, choosing right persons for right jobs.

• Periodical check up of Executives above 40 years of age. • Comprehensive lung function testing of target group.

• Audiometry of employees working in high noise areas (Turbines, Boilers, Steam-air line, Pump houses).

• Titmus Vision testing of all employees. • Work environment monitoring.

• Imparting occupational health education training to the employees.

• Maintaining up to date health records of each employee and analyse them in future.


C7 - 22


o Early detection of BP, Diabetes, IHD, Hypertriglyceridemia.

o Follow up curative advices to employees in the hospital.

EQUIPMENTS AT OHC

The Occupational Health Centre at Guwahati Refinery houses the following equipment:

SL. NO. NAME OF EQUIPMENT

1 Multigas detector for:Cl, H2S, SO2, NH3,CO, HCs

2 Personal Noise Dosimeter for monitoring personal effect of noise

3 Noise level meter for work zone monitoring

4 Spirometer

5 Audiometer

6 Ultrasonography

7 Digital X ray

8 ECG

9 Titmus Vision tester

Guwahati Refinery is doing Periodical Medical Check Up for its Employees. These Check Ups are done as per the matrix in

compliance with Occupational Health Manual.

The matrix for the periodical medical Health Check up is presented

in Table-7.4.


C7 - 23


TABLE – 7.4

MMAATTRRIIXX OOFF PPEERRIIOODDIICCAALL MMEEDDIICCAALL CCHHEECCKK UUPP ((AAss PPeerr OOccccuuppaattiioonnaall HHeeaalltthh MMaannuuaall))

RReeccoommmmeennddeedd CClliinniiccaall aanndd LLaabboorraattoorryy TTeessttss ffoorr

EEmmppllooyyeeeess WWoorrkkiinngg iinn HHaazzaarrddoouuss AArreeaass

EXPOSURE TARGET ORGAN

/ TISSUE

FREQ. OF

EXAMINATION

LABORATORY AND OTHER TESTS

URINE

ANALYSIS

BLOOD

PARAMETERS

ADDITIONAL

TESTS

AMMONIA

(NH3)

Skin, Eyes,

Mucous

Membranes,

Respiratory

system

Annual PFT / X-Ray

(Chest)

CHLORINE

(CL2)

Eyes, Respiratory

System, Mucous

Membranes

Annual PFT / X-Ray

(Chest)

COKE DUST Respiratory

System, Kidney

Annual Urine -

Cytology

Haemogram X-Ray (Chest)

/ Sputum

HYDROGEN

CHLORIDE

(HCL)

Skin, Eyes,

Mucous

Membranes,

Resp. System

Annual Heamatology PFT / X-Ray

(Chest)

HYDROGEN

SULFIDE

(H2S)

Eyes, Mucous

Membrane, Resp.

System, CNS

Annual Heamatology PFT

LPG Resp. System,

CNS

Annual PFT / X-Ray

(Chest)/ Nerve

Conduction

Test

MORPHOLIN

E

Resp. System,

Eyes, Skin

Annual PFT / X-Ray

(Chest)

NOISE Ears, Heart,

Blood Vessels,

Bones

Annual Lipid Profile Audiometry /

ECG

SODIUM

HYDROXIDE

Resp. System,

Eyes, Skin

Annual PFT / X-Ray

(Chest)

SULFUR

DIOXIDE

(SO2)

Eyes, Mucous

Membranes,

Skin, Resp.

System

Annual PFT / X-Ray

(Chest)

7.7 RAIN WATER HARVESTING For harvesting rain water at Guwahati Refinery, there are 2

catchment areas, which are:

(a) CD Hall Area: 4371 m3(1551 m2 x 2.818 m) (b) Training Center Building Area:4165m3 (1478 m2 x 2.818 m)


C7 - 24


Hence, these 2 catchment areas have the potential to harvest around 8500 m3 rain water.

7.8 ENVIRONMENTAL MANAGEMENT CELL

Guwahati Refinery has a full-fledged department to look after the

activities, related to Health, Safety & Environmental Protection. The organisation Chart has been shown as Figure 7.1. Besides, the

refinery has its own Safety, Health & Environment Policy, as attached herewith.

FIGURE – 7.1

GUWAHATI REFINERY - HSE POLICY


C7 - 25


APPENDIX-A

Details CSR Projects for FY 2017-18

Details of location

SI Brief description of CSR

Project/Activity

Village District State Project

cost

(Rs. Lakh)

1 Supporting the students

through funding of their total

course and hostel fees in

undergoing the one & half

years residential Diploma In

Hotel Management course at

Food Craft Institute.

Samuguri,

Nagaon

Nagaon Assam 16.72

2 Provided 10 pairs four-seater

desk-benches, 2 pairs

teachers’ tables-chairs, 1

steel armoire & 1 bookcase at

Changsari Madhyam Khanda

LP School, Changsari,

Kamrup(R )

Changsari Kamrup

(Rural)

Assam 1.39

3 Constructed two additional

class rooms at Choonsali High

School, Noonmati.

Noonmati,

Guwahati

Kamrup

(Metro)

Assam 15.00

4 Construction of 05 (five) nos.

of "Pay & Use" toilets at

various public locations of

Guwahati city, for & on behalf

of Guwahati Municipal

Corporation

Guwahati Kamrup

(Metro)

Assam 39.00

5 Sponsoring 10 girls for two

years ANM nurses training

course at a reputed Nurse

Training institutes in

Guwahati,

Guwahati Kamrup

(Metro)

Assam 14.51

6 Sponsoring 10 beneficiaries

for a two years Diploma in

Medical Laboratory

Technology course at Asian

Institute of Paramedical

Sciences, Guwahati

Guwahati Kamrup

(Metro)

Assam 9.81

7 Eye-screening camp for

cataract detection thru Sri

Sankaradeva Nethralaya.

Noonmati Kamrup

(Metro)

Assam 1.14

8 Construction of 25(twenty

five) low cost household

sanitary toilets for declaration

of Kajalichaki village as ODF,

along with household ring-

wells.

Kajalichaki Kamrup

(Metro)

Assam 17.60

9 Implementation of solid

waste management project at

Kajalichaki village towards

facilitating sustainable Clean

village.

Kajalichaki Kamrup

(Metro)

Assam 10.00

10 Undertaking restoration work

and infrastructure creation at

Jorpukhuri, for conservation

of endangered turtle species

through captive in-situ

breeding programme, with an

overall objective to sustain

turtle diversity

Guwahati Kamrup

(Metro)

Assam 5.17

11 90 days residential industrial

sewing machine operator

course at ITI for Women,

Guwahati (2nd batch)

Hajo Kamrup

(Rural)

Assam 4.00

12 Provision of Tata Xenon Crew

Cab pick-up van with an

animal in distress fabricated

cage in truck bed section

Guwahati Kamrup

(Metro)

Assam 7.99

13 Handover of 20 nos. of multi-

purpose sewing machines for

facilitating the beneficiaries

for sustainable livelihood

Hajo Kamrup

(Rural)

Assam 1.61

14 Procurement of 2(two) nos.

Diathermy surgical procudure

machines (model: Surgiscan

200) for Burn Care

Foundation

Guwahati Kamrup

(Metro)

Assam 4.00

15 Plantation of 1,000 saplings

within Assam Engineering

College to transform it into a

Green Campus, while

facilitating carbon

sequestration, soil

stabilization on inclined

terrain and maintaining bio-

diversity.

Jalukbari,

Guwahati

Kamrup

(Metro)

Assam 6.80

16 Hosting of 4(four) free health

checkup camps with field

support from Refinery

Hospital in vicinity of Ghy

Refy for benefitting financially

marginalized patients

attending the free health

check-up camps, along with

an Awareness Camp on

Dengue

Noonmati,

Guwahati

Kamrup

(Metro)

Assam 2.52

17 Plantation of 83 nos. of fruit

bearing & medicinal saplings

at Lal Singh Academy High

School, incl. cost of clearing &

dressing the area, installation

of wire-mesh enclosures and

maintenance.

Kharghuli,

Guwahati

Kamrup

(Metro)

Assam 0.64

18 Construction of three

classrooms for Nahira ME

School

Nahira,

Palashbari

Kamrup Assam 8.00

19 Supporting 20 beneficiaries in

undergoing three months

duration intensive

enterpreneurial course at ITI-

Guwahati on Aquaculture

Guwahati Kamrup

(Metro)

Assam 1.20

20 Undertaking development of

tourist friendly infrastructure

facilities at Umananda

riverine island, which is site

of historical importance on

deposit work basis through

District Administration of

Kamrup (M) district

Guwahati Kamrup

(Metro)

Assam 20.00

21 Construction of a boy's toilet

block at Loharghat Govt. MV

School

Loharghat,

Rabha Hasong

Autonomous

Council

Kamrup

(Rural)

Assam 2.70

22 Provided 10 staff-chairs, 1

steel armoire, 4 nos.glass-

door bookshelves, 2 high

back chairs, 2 twin drawer

steel tables, 1 desktop PC

with UPS, laser printer & a

projector to Deptt of Bodo,

Pandu College, Guwahati

Guwahati Kamrup

(Metro)

Assam 2.09

23 Provided 2 desktop PCs with

UPS, 1 laser printer, 2

computer tables-chairs, 1

high back chair & 1 table with

twin drawers to Uttar Kamrup

Adarsha Jr. College, Balisatra,

Rangia

Balisatra, Rangia Kamrup

(Rural)

Assam 1.43

24 Providing of classroom

furniture & educational aids

to Janata Hindi High School,

Sarvajanik Hindi High School,

2 No. Nizarapar LPS, Naba

Prabhat Jatiya Vidyalaya and

Gyanjyoti Jatiya Vidyalaya

Guwahati Kamrup

(Metro)

Assam 8.49

25 Procurement & subsequent

handover of a Maruti Suzuki

Omni Ambulance Van for

PCPS Girls' Polytechnic,

Guwahati, as their existing

ambulance is beyond

economical repairs

Bamunimaidam,

Guwahati

Kamrup

(Metro)

Assam 3.59

26 Procurement & handover of

65(sixty five) PVC public

dustbins of 100L capacity for

handover to Greater

Noonmati based institutions

during 69th Republic Day

celebrations by Ghy Refy thru

NGO: Nava Nirman Sangskar

Sevak, Noonmati

Noonmati,

Guwahati

Kamrup

(Metro)

Assam 0.91

27 Supporting a 5 months

duration job-oriented

residential skill-dev prgm in

m/c opt. plastics injection

moulding trade at CIPET,

Guwahati

Changsari, North

Guwahati

Kamrup

(Rural)

Assam 17.00

28 Construction of a community

toilet block with running

water facilities for tourists at

Hajo Hoygrib Madhab

complex for & on behalf of

District Administration of

Kamrup (Rural)

Hajo Kamrup

(Rural)

Assam 9.85

29 Procurement of a Maruti Eeco

Van for animal welfare NGO:

Early Birds

Guwahati Kamrup

(Metro)

Assam 4.30

30 Procurement of 3 nos tables

with twin drawers and 20

staff-chairs for Geetanagar

High School

Guwahati Kamrup

(Metro)

Assam 1.12

31 Procurement of 1 steel

armoire, 2 bookshelves, 50

plastic chairs, 6 single drawer

tables, 12 staff-chairs & 1

Aquaguard for Lalsing

Academy High School

Guwahati Kamrup

(Metro)

Assam 1.69


C8 - 1

Project Benefits Envirotech East Pvt. Limited

CHAPTER-8.0 PROJECT BENEFITS

Implementation of the proposed BS VI project of M/s IOCL at Guwahati

Refinery, District Kamrup, Guwahati, Assam will be a boon to the region

and will give various social, economic & infrastructural benefits to

society of the region.

Such project is expected to improve living conditions by providing better

employment opportunities and thereby result in further reduction of

population below poverty line, which is one of the prime policy objectives

of the Government.

It is expected that by creation of good employment potential and

industrialization of this area, poor/weaker section of the society will

enjoy higher earning power and quality of life.

The project is expected accelerate the infrastructure development in and

around the area, such as rail, road, transports and communication

facilities.

Trading of equipment and materials such as plates, pipe fittings, valves,

pumps, compressors, electrical machinery and construction materials

provide employment and income to a large number of people.

M/s IOCL fully understands and acknowledges that better education

and health care facilities, road infrastructure and drinking water

facilities are basic social amenities for better living standard of any

human being. The above activities shall be initiated either by providing

or by improving the facilities in the area, which will help in uplifting the

living standards of local communities. The Corporate Social

Responsibility covered by IOCL is presented in Chapter-7, Section-7.4.

The employment opportunities, both direct and indirect, that will arise

from the proposed project are around 500 persons will get employment

on daily average basis during the construction period.


C8 - 2

Project Benefits Envirotech East Pvt. Limited

The project will create opportunities for indirect employment to persons

who shall be employed for the greenery development work in and around

the plant site.

The project is expected to create large opportunities for indirect

employment as drivers, conductors and attendants of new trucks,

passenger carrying vehicles, technicians in workshops and garages

besides the plumbers, electricians and masons. The project will create

opportunities for indirect employment due to increase in trade

opportunities like stockiest/retailers of building materials, groceries,

provision shops, medical stores, garment shops, furniture shops etc.


C9 - 1

Summary & Conclusion Envirotech East Pvt. Ltd.

CHAPTER-9.0

SUMMARY & CONCLUSION

9.1 INTRODUCTION AND BACKGROUND Indian Oil Corporation Ltd. (Indian Oil) is India's largest public

corporation in terms of revenue and is one of the five Maharatna status

companies of India, apart from Coal India Limited, NTPC Limited, Oil and

Natural Gas Corporation and Steel Authority of India Limited. It is the

highest ranked Indian company and the world's 168th largest public

corporation in the prestigious Fortune 'Global 500' listing for the year

2017. Beginning in 1959 as Indian Oil Company Ltd., Indian Oil

Corporation Ltd. was formed in 1964 with the merger of Indian

Refineries Ltd. (Estd. 1958).

Being The Energy of India is about IndianOil's business interests

encompassing the entire hydrocarbon value chain - from refining,

pipeline transportation & marketing, to exploration & production of crude

oil & gas, petrochemicals, gas marketing, alternative energy sources and

globalisation of downstream operations.

Indian Oil and its subsidiaries account for nearly half of India’s petroleum

products market share, 35% share in refining capacity and 71%

downstream sector pipelines capacity in India.

The Indian Oil Group of companies owns and operates 11 of India's 23

refineries with a combined refining capacity of 80.7 million metric tonnes

per annum (MMTPA). There are nine refineries, located at Digboi,

Guwahati, Koyali, Barauni, Haldia, Mathura, Panipat, Bongaigaon and

Paradeep under the umbrella of Indian Oil Corporation Limited. Besides,

these also include two refineries of subsidiary Chennai Petroleum

Corporation Ltd. (CPCL), one at Chennai and the other at Narimanam.

The Corporation's cross-country pipelines network, for transportation of

crude oil to refineries and finished products to high-demand centres,

spans about 13,400 km. With a throughput capacity of 94.2 MMTPA for

crude oil and petroleum products and 9.5 MMSCMD for gas, this network

meets the vital energy needs of the consumers in an efficient,

http://en.wikipedia.org/wiki/Maharatna

http://en.wikipedia.org/wiki/India

http://en.wikipedia.org/wiki/Coal_India_Limited

http://en.wikipedia.org/wiki/NTPC_Limited



http://en.wikipedia.org/wiki/Steel_Authority_of_India_Limited


C9 - 2


economical and environment-friendly manner. The company operates the

largest and the widest network of fuel stations in the country.

GUWAHATI REFINERY Guwahati Refinery is the country’s first Public Sector Refinery as well as

Indian Oil’s first Refinery serving the nation since 1962. Built with

Rumanian assistance, the initial crude processing capacity at the time of

commissioning of this Refinery was 0.75 MMTPA and the Refinery was

designed to process a mix of OIL and ONGC crude. The refining capacity

was subsequently enhanced to 1.0 MMTPA and with INDMAX, the pilot

plant for first in-house technology of IndianOil, the ISOSIV and

Hydrotreater the Refinery has been able produce eco-friendly fuels.

Presently, Assam and imported crude oils are being processed. The

Assam crude oil is being supplied from Assam fields by M/s OIL INDIA

LIMITED through a cross-country pipeline and imported crude is sourced

from Barauni Refinery through rakes.

Guwahati Refinery produces various products like LPG, Motor Spirit,

Aviation Turbine Fuel, Superior Kerosene Oil, High Speed Diesel, Sulphur

and Raw Petroleum Coke and supplies them to Northeastern India as

well as beyond, upto Siliguri end through the Guwahati-Siliguri Pipeline,

spanning 435 KM, which was the first Pipeline of IndianOil and

commissioned in 1964. Most of the products of Guwahati Refinery are

evacuated through pipeline and some quantity also through road

transportation.

PROPOSED PROJECT

As per the declaration of Government of India of 6th January, 2016,

it has been proposed to implement BS-VI grade fuel in the entire

country w.e.f. 1st April 2020 i.e., switching over directly from BS-IV

grade fuels to BS-VI grade fuels. Thus, it is imperative that the

refinery up gradation should consider the production of BS-VI grade

fuels by inducting suitable new units and revamp of existing units.

Following facilities are proposed for implementation under BS-VI at

Guwahati Refinery:

Revamp Units:




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Compressors. No change in capacity.

New Units/Facility:



In this connection, M/s Envirotech East Pvt. Ltd. (EEPL) was

assigned the job of undertaking an Environmental Impact

Assessment (EIA) for the proposed project and formulate a proper

Environmental Management Plan (EMP).

9.2 SITE LOCATION

Guwahati Refinery is located at Guwahati, District Kamrup in

Assam. It is surrounded by some pharmaceutical, chemical, food

processing, cement industries, etc. operating in 10 km radius area

around the Guwahati Refinery. Its geo-graphical co-ordinates are

latitudes 26˚10′51.27″N to 26˚11′20.01″N and longitudes

91˚48′11.38″E to 91˚48′57.08″E. The Geographical Co-ordinates

of centre of the proposed project site for setting up of 80 TPH

capacity CFBC Boiler is latitude 26°11'17.57"N and longitude

91°48'22.07"E.

The general topography of the area is flat surrounded by hilly

regions and the general elevation of the site is 220 ft AMSL. New

Guwahati Railway Station is about 2.0 km. from the refinery site.

National Highway-17 is passing through the south direction, around

7.5 km from the refinery. River Brahmaputra is passing approx. 2.5

km distance in north direction w.r.t. the refinery. The nearest

Airport is Lokpriya Gopinath Bordoloi International Airport,

Guwahati, which is about 24 km. NE from the refinery boundary.

The project site already has proper road linkage for transport of

materials and equipment.

9.3 PROJECT HIGHLIGHTS

The principal features or highlights of the Proposed BS VI Project at

Guwahati Refinery under study are as follows:


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Location Guwahati in Assam

Land requirement The proposed project shall be installed on the

available land within the existing plant boundary of the refinery.

Cooling system Closed cycle cooling system with cooling towers

(existing system).

Make up water

Requirement & Source 10m3/hr. additional make up water will be

required in the refinery after the

implementation of BS VI project, which will be

sourced from the ETP recycled water. No

additional fresh water will be required.

The fresh water requirement of the refinery is

fulfilled from Brahmaputra River.

Power Requirement & Source

Around 5 MW additional power will be required,

which shall be sourced from the existing

facilities of the refinery.

Effluent Generation,

Treatment & Disposal The waste water generation from the refinery

after the implementation of BS VI project will

be around 255 m3/hr., the additional

generation from BS VI project, being around

10 m3/hr.

As per the existing practice, the waste water,

generated in the refinery after the

implementation of BS VI project will be treated

in the existing Effluent Treatment Plant of the

refinery. The major portion of the treated

effluent of the refinery will be recycled to the

refinery and the remaining portion will be

discharged into Brahmaputra River as per the

existing practice.

There will be no additional treated effluent

discharge after BS VI project.

Air Emission Air emission of the refinery shall remain at the

existing level.

Solid Waste Generation There will be no regular generation of spent

catalyst as solid waste. The spent catalyst

after its End of Life (EOL) will be safely

secured in sealed container for auction. After

auction, the successful party will collect the


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safely stored spent catalyst from Guwahati

Refinery for treatment at their end.

Manpower requirement 16

Cost Rs. 513.0Crores

9.4 BASELINE ENVIRONMNETAL SCENARIO

The area falling within the radius of 10 km around the project site

at Guwahati Refinery, District Kamrup, Guwahati in Assam has been

considered as study area. On-site environmental quality monitoring

was carried out from 9th December, 2016 – 8th March, 2017, in

connection with the EIA study for 80 TPH CFBC Pet coke Boiler

Project at Guwahati Refinery

9.4.1 Meteorology

The monthly maximum and minimum temperatures recorded on-

site during the monitoring period varied between (29.5-33.0)°C and

(8.0-11.0)°C respectively with overall maximum and minimum

temperatures being 33.0°C and 8.0°C respectively.

The monthly maximum and minimum relative humidity recorded

on-site during the said monitoring period varied between (74-85)%

and (44-61)% respectively, the overall maximum and minimum

being 85% and 44% respectively.

The maximum wind speed 3.3 Km/hr was in the month of March

while the overall mean wind speed during the monitoring period

was 2.5 Km/hr. The predominant wind direction was observed at

North-East direction.

9.4.2 Ambient Air Quality

Ambient air quality was monitored at eight (8) locations in and

around the project site.

The overall mean values of PM10, PM2.5, SO2, NO2 , Methane Hydro

Carbon, Non-Methane Hydro Carbon and CO in the area (mean of all

the 8 locations) were 63.7 g/m3, 26.2 g/m3, 9.1 g/m3, 26.3

g/m3 , 0.49 ppm, 0.12 ppm and 0.565 mg/m3 respectively.


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9.4.3 Water Quality

Water samples were collected and analyzed at ten (10) locations to

assess the surface water quality in the study area. Water samples

were collected from eight (8) locations to assess the baseline status

of the ground water quality of the study area.

The pH values of the collected two water samples from the River

Brahmaputra were found 7.2 and 7.4, Values of Dissolved Oxygen

were observed (6.5 & 6.7) mg/lit. Total Dissolved Solids were found

(163 & 168) mg/lit while values of total Hardness were found (102

& 99) mg/lit. Calcium & Magnesium were found (31 & 28) mg/lit

and (6 & 7) mg/lit respectively. Oil and grease was below detection

limit (<1.4 mg/lit) in these two samples. Sulphate, Nitrate and

Chloride were observed 3 mg/lit, (1.9 & 1.6) mg/lit and (22 & 25)

mg/lit respectively. Iron contents were found (0.2 & 0.4) mg/lit and

zinc contents were found 0.07 & 0.06 mg/lit in both samples.

The pH values of the collected pond water samples were found in

the range of (6.8 - 8.0). Dissolved Oxygen was observed in the

ranges of (5.7 - 6.5) mg/lit. Total Dissolved Solids were found in the

ranges of (164 - 265) mg/lit while Total Hardness was found in the

ranges of (118 - 177) mg/lit. Calcium & Magnesium were found

varying in the ranges of (34 - 51) mg/lit and (8 - 13) mg/lit

respectively. Oil and grease was below detection limit (<1.4 mg/lit)

in these samples. Sulphate, Nitrate and Chloride were observed

varying in the ranges of (4 - 13) mg/lit, (1.3 – 4.1) mg/lit and (24 -

48) mg/lit respectively. Values of Iron and zinc contents were found

in the ranges of (0.35 - 1.5) and (0.09 – 0.42) mg/lit respectively.

Conclusion can be drawn in the light of the overall analysis made so

far that the surface water in the study area is free of any kind of

industrial and urban pollution and has been found to be generally fit

for human consumption.

9.4.4 Noise

A total of 10 locations around the proposed project were selected for

the measurement of ambient noise levels.

During the day time, the equivalent noise levels were found to vary in

the range of (55.8-68.2) dB (A) while in the night time, the


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equivalent noise levels were observed to be varying in the range of

(46.5-58.4) dB (A).

9.4.5 Ecology

The study area is found to have a good vegetation cover due to

helpful climatic conditions and good soil quality in the area. There are

good number of plantation patches in the study area and dense

vegetation cover around settlement areas.

There is extensive grazing land, which come under cultivation. The

overall floral composition in the whole study area is quite rich.

9.4.6 Demography and Socio-economy

A total of 64 villages, Guwahati and Nagengi municipalities and

some Census towns fall under the 10 km radius study area. The

study area is urban in nature and highly populated with the total

population of 10,70,184 (as per 2011 Census). Scheduled Caste

(SC) and Scheduled Tribe (ST) population in the study area is about

6.35% and 6.27% w.r.t. the total population respectively. The sex

ratio in the study area is about 934 females per 1000 males. The

overall literacy rate is about 81.6% of the total population. The

principal language is Assam’s and the principal staple food is rice.

9.5 ENVIRONMENTAL IMPACTS OF PROPOSED PROJECT

9.5.1 Impacts on Air Quality

There will be no additional stack after the implementation of the

proposed project. Air emission of the refinery shall remain at the

existing level. Hence, there will not be any adverse impact on the

air quality of the area.

9.5.2 Impacts on Water Quality

The waste water, generated from the proposed project will be

subjected to necessary treatment in the existing Effluent Treatment

Plant (ETP) to amend the quality of effluent to regulatory

requirement before discharge. As per the existing practice, most of

the treated waste water will be reused for various purposes inside

the refinery and the balance part will be discharged into

Brahmaputra River through the existing disposal system.


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After the implementation of BS-VI project, the additional waste

water generation of the refinery will be around 10 m3/hr., which will

be reused after undergoing proper treatment in the existing Effluent



As the effluent will be completely treated and its quantity and

quality is expected to be similar to the level achieved now, no

impact on the water quality of the receiving water body is

envisaged. The effluent has the added advantage of huge dilution in

this vast water body. It may, therefore, be concluded that no

impact is likely on the surface water quality due to the operation of

the said project.

9.5.3 Impacts on Soil

There will be no regular generation of spent catalyst as solid waste.

The spent catalyst after its End of Life (EOL) will be safely secured

in sealed container for auction. After auction, the successful party

will collect the safely stored spent catalyst from Guwahati Refinery

for treatment at their end. There will be no environmental hazard at

Guwahati Refinery due to solid waste generation in the form of

spent catalyst. This will ensure that there will not be any impact on

soil quality due to the disposal or deposition of solid waste.

9.5.4 Impacts on Land Use

The proposed project would be set up in the available area within

the Guwahati Refinery premises, already earmarked for this

particular project, so there will not be any significant impact on the

land use pattern of the area.

9.5.5 Impacts on Biological Environment

The base line status of terrestrial flora and fauna within the study

area has been drawn up earlier. The study area is dominated by

urban and semi-urban land use. Aamchung sanctuary is located

within 10 km. radius area of the project site. Apart from this, there

are no other eco-sensitive areas like National Parks/ Biosphere

Reserves/ Migratory Corridors of wild animals, Reserve Forest etc.

within 10 km radius study area around the Guwahati Refinery.

The harmful effects of such air pollutants as SPM, SO2 and NOx in

affecting growth and other similar functions of trees, either


C9 - 9


singularly or synergistically is well known. However, there will be no

increase in the emissions of the air pollutants after the

implementation of BS-VI project. So, this will not cause any stress

on the growth of the plant in the area.

Wastewater after proper treatment will be discharged into

Brahmaputra River through the existing disposal system and its

quantity and quality is expected to be similar to the level achieved

now, no impact on the aquatic ecology of the receiving water body

is envisaged.

9.5.6 Impacts on Socio-Economic Environment

The project will offer substantial employment potential during

construction phase, which will have beneficial impact.

9.6 ENVIRONMENTAL MANAGEMENT PLAN

Guwahati Refinery has already developed various management

activities for the Environmental Management Programme, which

meets all statutory requirements and helps to improve

environmental quality. Guwahati Refinery has taken various

mitigation measures in its existing operation.

Tree plantation is a regular activity at Guwahati Refinery. Till date,

around 38000 trees are existing in the refinery and township areas.

Guwahati Refinery is extensively engaged with many initiatives to

protect the environment, to prevent pollution and restore the

biodiversity of this area. In this connection, it has undertaken

massive tree plantation including plantation of local plants,

development of eco parks etc. Presently, it has 3 eco parks in its

township, namely Sector I, Sector II and Sector III, occupying 5500

m2, 4200 m2 and 6500 m2 respectively. The Eco parks are well

maintained by dedicated gardeners and are home to a variety of

plants, animals and birds that are native to the area. Being in an

ecologically sensitive area, great care is taken to maintain the bio-

diversity of the area. Also, a herbal park of area 1533.35 m2 was

developed near Sector II, which hosts a variety of medicinal plants.

The eco parks are also a visiting place to a variety of native animals

and birds.

In line with Indian Oil’s responsibility towards the society, Guwahati

Refinery has been undertaking various Community Development


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activities since very long for the welfare and upliftment of

surrounding areas.

Guwahati Refinery has the foolproof Safety & Fire Management

System in Indian refining sector.

Guwahati Refinery has established a full-fledged Occupational

Health Centre. It meets all statutory requirements of Factories Act.

Doctors and other staffs are well qualified in the field of OH and are

fully equipped to handle various equipment, appliances. OHC

conducts all OH check-ups during pre-employment, pre-placement,

Executive, Well person screening and all Occupational Health check-

ups.

Guwahati Refinery has adopted a full-fledged environmental

monitoring programme in its existing operation. The same practice

shall continue and shall be extended further with the

implementation of the proposed project as per direction of State

Pollution Control Board.


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Disclosure of Consultant Engaged Envirotech East Pvt. Limited

CHAPTER-10.0 DISCLOSURE OF

CONSULTANT ENGAGED

Brief Profile of M/S. Envirotech East Pvt. Ltd.

M/s. Envirotech East Pvt. Ltd., Kolkata has acquired the status of one of the

Prime organizations of the country in undertaking various assignments in the

areas like Environmental Impact Assessment, Environment Management Plan,

Risk Analysis, Detailed Project Report, Environmental Audit / Statement, Geo-

Technical Statement etc., since it was formed in 1988 by Prof. G. D. Agarwal,

former Dean, IIT Kanpur and Member Secretary, Central Pollution Control

Board.

The company owes in its name a list of eminent & well-qualified experts to

execute various assignments with the desired degree of perfection. The

manpower, engaged for EIA study for proposed BS VI project of M/s IOCL at

Guwahati Refinery, District Kamrup, Guwahati in Assam is given in Table-

10.1. Since its inception, the company has been endeavoring for continual

improvement in its system for which it has been accredited with ISO 9001:

2000 & ISO 14001:2004 certifications.

The company has a well-equipped laboratory, which is recognized by Ministry

of Environment & Forests, Govt. of India.


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TABLE - 10.1

MANPOWER ENGAGED FOR EIA STUDY FOR PROPOSED BS VI PROJECT

AT GUWAHATI REFINERY, DISTRICT KAMRUP, GUWAHATI, ASSAM

Discipline Name of Expert Key Qualifications

indicating area of

specialization

relevant to the

respective discipline

Signature

EIA Coordinator:

Mr. T Kundu

Bachelor of Technology

(Chemical Engineering)

Functional Area Experts involved:

Air pollution

monitoring,

prevention and

control (AP)

Mr. T. Kundu

Bachelor of Technology


Meteorology, air

quality modeling

and prediction

(AQ)

Mr. T. Kundu Bachelor of Technology


Water pollution

monitoring,

prevention and

control (WP)

Mr. Asoke

Kumar Banerjee

M.Sc. (Chem.)

Geology (GEO)

Dr. Abhijit

Chakraborty

Ph.D in Geology

Hydrology,

ground water

and water

conservation

(HG)

Ecology &

Bio-diversity

(EB)

Dr. (Mrs.)

Anupam Sinha

Ph.D in Biology Sc.

Noise &

Vibration (NV)

Mr. R.K.

Dasgupta

Bachelor of Engineering

(Mechanical)


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Land Use (LU) Dr. Sunando

Bandyopadhyay

Ph. D in Geography

Solid &

Hazardous

Waste (SHW)

Mr. Asoke

Kumar Banerjee

M.Sc. (Chem.)

Soil

Conservation

(SC)

Mr. Asoke

Kumar Banerjee

M.Sc. (Chem.)

Risk assessment

and hazards

management

(RH)

Mr. T. Kundu Bachelor of Technology


Socio-economics

(SE)

Prof. Pabitra Sengupta

M. Sc (Economics)

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