Course Conductor / Presenter: Mr Nirmalendu Bandyopadhyay Consulting Engineer Kolkata (India )

1. Environmental Impact Assessment for Upstream Facilities of an Onshore Oilfield.Case studies from a Project in India Course Conductor / Presenter: Mr Nirmalendu Bandyopadhyay Consulting Engineer Kolkata (India ) Tel: (+91)33-2452-6436 Mob: (+91)99032-78752 nbandyopadhyay@yahoo.com

2. Location Map of the Project in India Salient Topics to be Covered- The Basics of the EIA Study- Regulatory Review Process for getting approvals .- Baseline Data Collection and Evaluation of Impacts - Mathematical Modelling

3. The Basics of the EIA Study1 Brief Descriptions of the Project and the Principal Objectives of Development 2 Analysis of Alternative Options to meet the objectives of the proposed project. 3.Assessment of Impacts on the Salient Environmental Features in the area 4.Identification and Implementation of Practical Mitigation Measures. 5.Continuous Monitoring of the measures and their Performance Evaluation 6.Public Awareness about the Mitigation Measures and benefits of the Project.

4. Regulatory Review Process for getting ApprovalsScreening to ascertain whether the project Needs EIA Study and Approval Assess the Models to be followed and extent of Public participation Baseline Data Collection on Environmental Parameters. Preparation of EIA Report and Presentation to Regulatory Authorities Draft Submission for Approval Incorporate Comments and Observations from Regulators Final Submission after Incorporations.

5. Baseline Data Collection and Evaluation of Impacts . Prevalent Ambient Air Quality Water Quality and the presence of water bodies in the area Noise level during project implementation and subsequent production operationAmbient Air temperature and effects from Flares Land Use Pattern and disturbance to natural topography. Prevalent Floras , Faunas and Wild Lives Social Health and Cultural Diversity.

6. Mathematical Modelling for Prediction of Environmental Impacts.Allocate a Total value for Environmental Impact ( In this case it was 1000 )Identify the major Parameters of EIA Study ( In this case it was four ) Allocate Total Values to each Parameter depending on its importance and extent.Sub divide each major Parameter into sub groups and allocate weighted values.Evaluate each sub group on the basis of impactsBased on the sub group impacts , calculate the effects of impacts on each ParameterSum up the Total Impacts of the four Parameters to give the Overall Environmental impactThis can be represented mathematically as A = B + C + D + EAgain B = b1 + b2 + b3 and so on . C = c1 + c2 + and so on D = d1 + d2 + d3 + and so on This will be explained in detail at the Presentation Paper .

7. Basics of EIA Study1.Brief description of the Project and the Principal Objectives of the Development.Project Name –Onshore Jorajan Development Project (JDP)Location of the Project - In the Sate of Assam in IndiaArea of Operation of the Project – Approx 180 Sq .KmsObjectives of the project – To Produce 25000 BBL/Day of Crude Oil of 38 Deg API Gravity and ensure Sustainable Environment and Ecological balance Estimated Plateau Production– 20 years then extendable to 32 years or more by EORProduction Process – Self producing aided by Gas Lift and water Injection

8. Project Main Facilities- 62 Development Wells drilled to Av 3000 m depth- 6 Each of Oil Collecting and Gas Compressor Stations- 7 Water Injection stations- 2 Mud Plants- Laying of approx 342 Kms of Field Flow Pipelines and Trunk Pipelines- One 500 m Span Major Pipeline River Crossing

9. 2 .Analysis of Alternative Options- Meet Crude Oil demands by Imports from other countries- Enhance Crude Oil Production from other Operating Fields.- Reduce the Area of Operation of the Field and Try Directional drillings from other locations to reach the Producing reservoirs.- Delay the development to try other environmentally insensitive locations .

10. 3 . Impacts on Salient Features in the Area of Operation.- Ambient Air- Ground and River water and other Isolated water bodies- Agricultural lands- Undulated Topography - Tea gardens- Variety of Floras , Faunas and Wild lives - Natural habitats of Migratory birds

11. 4 . Implementation of Mitigation Measures- Control of Gaseous Emissions and Dust generation- Installation of highly efficient Waste Treatment Plants and safe disposal of waste Effluents.- Minimum acquisition of Agricultural Lands and Payments of heavy compensations- Selection of locations and construction of roads and Production Stations to match with natural topography to the extent possible. - Avoiding Tea Garden locations through Deviated Drillings to the extent possible- Minimum destruction of Forest Lands and Planting of greeneries to compensate .- Protection of natural water bodies and avoiding flares nearby.

12. 5 .Performance Evaluation of Mitigation Measures.- Continuous monitoring of collected samples for compliance to standards- Performance appraisal of production plants and equipment.- Maintenance schedule for plants and machinery .

13. 6. Public Awareness and participation .- Wide Publicity in the media and Public meetings under the Local Administration about the Project and its benefits and the Mitigation Measures to Protect the Environment. - Organise meetings with Local Council and members of Public to apprise .- Invite comments and observations from them and include as much as feasible - Distribute informative literatures periodically to the local publics educating them on the progress and positive achievements.Brief details of the proposed Main Topics have been furnished in these few slides. These will be furnished in greater details to match with the time allocated for the course.N.Bandyopadhyay Sept 24, 2007Kolkata. India Tel: (+91) 33- 2452-6436Mob: (+91)99032-78752E.mail: nbandyopadhyay@yahoo.com