Eptisa carries out the hydro-geological study in the metropolitan region of Port of Prince in Haiti

The aim of the study is to prepare preliminary studies for the implementation of drinking water extraction wells

September 23, 2013

The contract to carry out a hydro-geological study in the metropolitan region of the Haitian capital Port of Prince performed for the aquifers Massif de la Selle and Nappe de la Plaine du Cul-de-Sac, has been awarded to the consortium formed by Eptisa and Insolfor.

The project consists of recovering and gathering the existing information and executes the study with taking into consideration all existing studies, all information from the boreholes and wells located in the studied area. On the individual basis it will gather corresponding information on the lithographic stratification and on the best fracturation´s directions, the depth of static levels, productivity and dynamic levels of the exploitation phases, the quality of water.

In the aquifer Massif de la Selle, the works will be divided into two stages. In the first phase, it will be carried out the verification of the stability of the springs and detection of any rehabilitation needs that have not been detected previously. Secondly, the following activities will be performed: geological cartography and analysis of possible fracturation in the selected region, analysis of geophysical state to define exploration drilling and the placement of piezometers, trial execution to determine stable pumping flows in opened boreholes. The study for the Massif de la Selle closes with the synthesis of the potential of newly identified water resources and with the cost assessment of the construction and exploitation of the particular hydrological resource, its connection to the existing network and its storage.

In the aquifer Plaine du Cul de Sac, the hydro-geological research will include: interpretation of hydro-geological data and data on water level recovered from existing piezometers and those drilled during the project; long-term data follow-up and interpretation; inventory; identification and interpretation of the data from the existing wells (wells from the industrial areas and old irrigation wells); examination of the current situation and the potential for drilling in the contracting Administration, update of the database, with its adaptation to the newly gathered data; evaluation of the reserve of renewable aquifer; analysis of the quality of water evolution; evaluation of the optimal pumping flow from the currently exploited boreholes; localization of the future drilling zones and identification of affected properties; evaluation of the vulnerability of the Plaine du Cul de Sac aquifer; summary of the potential of newly detected resources in Plaine du Cul de Sac and its overall capacity. Cost assessment for the construction of new water supply infrastructure and its communication with the existing network, as well as proposed storage in the Master Plan of Tractebel y Estudio de BEJV.

As additional technical data, various springs of Massif de la Selle present the capacity between 25.920 m3/d (Source Mariani) and 2.040 m3/d (Source Leclerc). And special attention is drawn to the variety of wells, both working and disabled, as well as piezometers in the Plaine de Cul de Sac which oscillate between 30 and 160 meters of depth.

A team of experts will carry out two preliminary studies for better implementation of the extraction wells. With the support of these studies, the piezometers will be placed and the data extracted from them will be mathematically modelized, so that optimal production capacity and water extraction flow can be determined. They will also coordinate technical tasksas well as the establishment of the database with the existing data and update with the data acquired from the research campaigns.


 
 Eptisa carries out the hydro-geological study in the metropolitan region of Port of Prince in Haiti