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Jun 3, 2017

Hydrogeological Survey Request for Proposals (RFP)

Request for Proposals (RFP)
Hydrogeological Survey

Lokamarinyang Self Help Group is sourcing for a Consultant hydro geologist to conduct a comprehensive Hydro-geological Survey and related studies for the borehole. 

The purpose of the hydro-geological survey is to explore the possibility of identifying a groundwater source. 

The Survey will aim at evaluating the groundwater situation as it is, through collecting any available relevant data (e.g. drilling logs), evaluating data from the surrounding boreholes, carrying out field geophysical measurements and reviewing any available previous survey report to form the hydro-geological geophysical survey report which will be in accordance to standards set and will meet Lokamarinyang, donor and government objectives of drilling a successful borehole that will provide sufficient water for Lokamarinyang Self Help Group use.
Lokamarinyang is located 360km from Lodwar.
Scope of Work
The Consultant is expected to use both secondary and primary data in the exercise, Secondary data will involve desk study of available information/data on existing boreholes, drill logs, reports and maps while primary data will be obtained by carrying out Hydro-geophysical measurements within the study area using the necessary hydro-geological surveying equipment. 

The outcome of the consultancy will be a detailed hydro-geological survey report giving details of the findings and recommendations.
The hydro-geological/geophysical investigations will be carried out in a multi-step approach:
a) Desk study: Review of existing data, topographical maps, satellite images, existing studies and borehole site investigations in the area, geological reports and maps (if available), borehole and surface water records, etc.
b) Hydro-geological fieldwork: Detailed reconnaissance survey of project area. (GPS co-ordinates/P-codes, water level measurements, condition of these boreholes, usage and performance where applicable) inspection of geological, geo-morphological and structural characteristics of the investigated area; verification of existing data and findings.
c) Geophysical measurements: resistivity/IP profiling and vertical electrical soundings.
d) Analysis of hydro-geological/geophysical data.
e) Compilation, analysis, and evaluation of the gathered data and information.
f) Drilling permit acquisition from Water resources management authority (WRMA).
g) Site selection and reporting.
Borehole Siting: Hydro-Geological Surveys
The hydro-geologist will be responsible for planning, execution and interpretation of all geophysical data, reporting and selection of the most suitable site for drilling.
The site for selected development shall be marked with a concrete marker and indicated on a sketch map to be included in the final report.
The final report to be submitted to Achukule will be a comprehensive account of the whole of the Consultancy; it will review the existing literature and other relevant information, such as drilling logs, satellite images, etc.

The report shall include all field data, interpretations and justifications, hydro-geological evaluations, conclusions and recommendations relating to the investigated area. In addition, appropriate maps, diagrams and data plots shall be presented. 

Of considerable importance will be an objective assessment of the applicability and success of the methods applied.
The outline table of contents of the final report will be as follows:
  • Introduction, review of previous studies and environmental background.
  • Geology and hydrogeology (incl. Inventory of boreholes and other water points).
  • Methods of investigations, including Geophysical Techniques.
  • Detailed resistivity (HES & VES) to delineate the productive aquifer.
  • Aquifer potential; sustainable yield & Water quantity.
  • Proposed drilling site.
  • Proposed drilling method, and its applicability.
  • Drilling permit/authorization from WRMA.
  • Conclusion and recommendations.
Recommendations will be given on the most suitable site for borehole drilling, the required depth, water quantity, design and installation details, and other relevant aspects. 

Based on the available hydro-geological and geophysical data, an assessment of the anticipated chances of success shall be made for each individual site.
The hydro-geological report will give a detailed map delineating the investigated area, geology, aquifer properties (where known), location of measurements, and recommended drilling site. In addition, pictures taken during the actual field activity shall be included in the report.
All geophysical data, including its interpretation will be produced as an appendix to the final report.

Requirements Needed For Bidding

The Consultant is required to provide the following
  1. Technical proposal on how the assignment will be conducted
  2. Appropriate timelines to perform the assignment
  3. Financial proposal indicating the cost rates and other charges applicable.
  4. CVs of the lead Consultant and other assisting hydro-geologists.
  5. Proven field technical and field experience of Consultant.
  6. Consultancies performed in the last 3 years especially in Turkana county with reference letters for each hydro-geological surveys consultancy.
  7. Proof of availability of all the equipments required to perform the survey.
  8. Availability to perform the assignment at the earliest possible time.
The deadline for submitting bids/quotation is 7th June 2017 at 4.00 pm.  

Bid be sent to [email protected] and a copy to [email protected].
The subject of the e-mail should clearly indicate “Hydro geological Survey Consultancy”

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