Government of Dominica Executive Summary of the Environmental Impact Assessment
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Government of Dominica Geothermal Project Management Unit Regional Council of Guadeloupe Government headquarters Avenue Paul Lacavé Kennedy Avenue Petit Paris ROSEAU 97 109 BASSE-TERRE DOMINICA (Commonwealth of) FRANCE Contact : Mr Alexis V. GEORGE Contact : Mr André BON Dominica Geothermal Energy Development Project Phase 2: Environmental Survey and Impact Assessment of Geothermal Wells Drilling in the Roseau Valley. Executive Summary of the Environmental Impact Assessment Roseau, Dominica Caribbean Geothermal Interreg Programme 1 REFERENCES TITLE CARIBBEAN GEOTHERMAL INTERREG PROGRAMME PHASE 2: PRELIMINARY ENVIRONMENTAL SURVEY AND ASSESSMENT OF THE IMPACTS OF GEOTHERMAL DEVELOPMENT DRILLING IN DOMINICA – EXECUTIVE SUMMARY OF THE ENVIRONMENTAL IMPACT STUDY, TOWNSHIP OF ROSEAU, DOMINICA RECIPIENTS GEOTHERMAL PROJECT REGIONAL COUNCIL OF MANAGEMENT UNIT GUADELOUPE GOVERNMENT HEADQUARTERS AVENUE PAUL LACAVE KENNEDY AVENUE PETIT-PARIS ROSEAU 97 109 BASSE-TERRE DOMINICA (COMMONWEALTH OF) FRANCE PERSONS CONTACTED MICHAEL FADELLE – COORDINATOR, RENEWABLE ENERGY PROGRAMME (GOVERNMENT OF DOMINICA) ALEXIS V. GEORGE – GEOTHERMAL PROJECT MANAGEMENT UNIT (GOVERNMENT OF DOMINICA) ANDRÉ BON – DIRECTOR OF THE DEPARTMENT FOR THE ENVIRONMENT AND QUALITY OF LIFE (REGIONAL COUNCIL OF GUADELOUPE) AUTHORS OLIVIER FELICITE – CARAÏBES ENVIRONNEMENT DEVELOPPEMENT MURIEL IRIBAREN – CARAÏBES ENVIRONNEMENT DEVELOPPEMENT GAELLE HEBERT – CARAÏBES ENVIRONNEMENT DEVELOPPEMENT PIERRE DECHAMPS – CARAÏBES ENVIRONNEMENT DEVELOPPEMENT QUALITY CONTROL OLIVIER FELICITE – CARAÏBES ENVIRONNEMENT DEVELOPPEMENT REFERENCES E3C0-R0509/13/OF/HG/MI/PDC VERSION VT1 DATE 29 OCTOBER 2013 This report is based on the conditions observed and the data supplied by the organisation’s representatives during our visits. The recommendations and observations contained herein are neither exhaustive nor definitive, and do not cover all the potential risks or dangers inherent in the organisation’s activities nor do they guarantee that the organisation complies with the applicable legislative, regulatory, normative or statutory requirements. No service provided by Caraïbes Environnement may be considered as an act of project management and under no circumstances is Caraïbes Environnement a service contractor, designer or project manager. This report is intended to assist the organisation with regard to environmental prevention and protection and risk management actions. The contents of this report may not be used as a contractual document by a third party. Preliminary environmental survey and assessment of the impacts of geothermal development drilling in Dominica – Executive summary - E3C0-R0509/13/OF/HG/MI/PDC - 29/10/2013 2/50 2 CONTENTS 2.1 List of sections 1 REFERENCES ................................................................................................ 2 2 CONTENTS ................................................................................................... 3 2.1 List of sections ................................................................................................ 3 2.2 List of figures .................................................................................................. 4 2.3 List of charts ................................................................................................... 5 3 BACKGROUND .............................................................................................. 6 4 INTRODUCTION ............................................................................................ 7 4.1 Environmental impact study context and objectives ............................................ 7 4.2 Nature of the project ....................................................................................... 7 4.3 Natural hazards and climatic elements that might affect the project ..................... 7 4.4 Supplementary surveys .................................................................................... 7 5 STUDY AREAS ........................................................................................... 8 5.1 Geographical study area................................................................................... 8 5.2 Study area duration ......................................................................................... 8 5.3 Natural and climatic aspects that may affect the study areas ............................... 8 6 PRESENTATION OF THE ROSEAU VALLEY GEOTHERMAL PROJECT ......... 9 6.1 Project justification .......................................................................................... 9 6.2 Method to be employed ..................................................................................10 6.3 Sites selected for drilling .................................................................................11 7 ENVIRONMENTAL BACKGROUND ..................................................................... 13 7.1 Physical environment ......................................................................................13 7.2 Natural environment .......................................................................................17 7.3 Landscape and living environment ...................................................................20 7.4 Human environment .......................................................................................29 8 ENVIRONMENTAL IMPACTS & ENVIRONMENTAL MANAGEMENT PLAN ..................... 33 8.1 Description of the phases ................................................................................33 8.2 Impacts and measures on the physical environment ..........................................34 8.3 Impacts and measures on the natural environment ...........................................38 8.4 Impacts and measures on landscape and heritage ............................................40 8.5 Impacts and measures on the human environment ...........................................42 8.6 Oversight of measures (environmental monitoring programme) ..........................48 Preliminary environmental survey and assessment of the impacts of geothermal development drilling in Dominica – Executive summary - E3C0-R0509/13/OF/HG/MI/PDC - 29/10/2013 3/50 2.2 List of figures Figure 1: Project study area location ............................................................................... 8 Figure 2: Typical drill rig ................................................................................................10 Figure 3: View of the Laudat site with the platform (August 2013) ....................................11 Figure 4: Panoramic view from east of the Laudat platform (August 2013) ........................11 Figure 5: View over the Trafalgar site taken from the road leading to Laudat (August 2013) ...................................................................................................................................12 Figure 6: Panoramic view of the Trafalgar site, taken from the entrance, to the east (August 2013) ..........................................................................................................................12 Figure 7: Area of interest on the Roseau Valley geothermal field as defined in June 2008 and estimation of the size and depth of the high-temperature reservoir ...................................14 Figure 8: Cross section of Roseau Valley .........................................................................20 Figure 11: View of production site from the village of Laudat, viewing point 2 (2013 photo) 21 Figure 12: Production site from the village of Laudat, viewing point 2 (2013 zoomed photo) ...................................................................................................................................21 Figure 13: Laudat houses viewed from the production site (2013 zoomed photo) ...............21 Figure 14: The site from the vicinity of the DOMLEC reservoir, viewing point 3 (2013 photo) ...................................................................................................................................22 Figure 15: Production site from the western access road (2011 photo) ..............................22 Figure 16: Production site from the southern access road (2013 photo) ............................23 Figure 17: Location of illustrated viewing points over the production site ...........................23 Figure 18: Location of reinjection site’s distant viewing points ..........................................24 Figure 19: Reinjection site viewed from north of the Laudat road, viewing point 1 (2013 photo) .........................................................................................................................25 Figure 20: Zoom photo of reinjection site, viewing point 1 ...............................................25 Figure 21: Zoom photo of reinjection site, viewing point 1 ...............................................25 Figure 22: View from access road to reinjection site, viewing point 2 ................................26 Figure 23: View from residential area north of the reinjection site, viewing point 3 .............26 Figure 24: View from the houses nearest to the site, viewing point 4 ................................26 Figure 25: View from the houses north of the reinjection site, viewing point 5 ...................27 Figure 26: View from the houses north-east of the site, viewing point 6 ............................27 Figure 27: View from a garden north-east of the site, viewing point 7 ...............................27 Figure 28: View from