Hydrogeological / Geophysical Survey Call for Proposals in Lokichar, Kenya

Terms of Reference for Call for Proposals for Hydrogeological / Geophysical Survey
 

Neeme Poultry Enterprise Borehole Project
 

Location: Neema Poultry Enterprise Compound and its environs.
 

Job Title: Hydro-geological/Geophysical Survey Consultant 

Applications’ Deadline: Tuesday December 21, 2015 – 4:00 pm
 

Background: Neema Self-help Group is located in Lokichar, Turkana County – Kenya. The group runs a Poultry enterprise focusing on layers. 

The organization has been funded by US African development Foundation to procure and drill a borehole. 

 

The objective of the project is to provide access to adequate safe water for poultry and other farm water needs.
 

In order to achieve this objective, Neema has identified to drill one borehole within neema poultry enterprise compound or any nearby point but not further than 10m within the confines of the enterprise compound.

In this regard Neema is sourcing for a Consultant hydro geologist to conduct a comprehensive Hydro-geological /Geophysical Survey and related studies for the borehole. 

The purpose of the hydro-geological /geophysical 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 Neema, Donor and Government objectives of drilling a successful borehole that will provide sufficient water for Neema poultry enterprise use.
 

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

Methodology

The hydro-geological/geophysical investigations will be carried out in a multi-step approach:

1. 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;


2. 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 and structural characteristics of the investigated area; verification of existing data and findings;


3. Geophysical measurements: resistivity/IP profiling and vertical electrical soundings;


4. Analysis of hydro-geological/geophysical data;


5. Compilation, analysis, and evaluation of the gathered data and information;


6. Drilling permit acquisition from Water resources management authority (WRMA) – The consultant will process WARMA permit and present it to Neema as part of the report;


7. Site selection and reporting.

Borehole Siting: Geophysical & Hydro-Geological Surveys.
 

The borehole shall be sited with the aid of combined a hydro-geological and geophysical survey. 

Prior to the field investigations, a desk study shall be made of the available relevant information on hydrogeology, climate, existing water sources, drilling records and other sources for the proposed area.
 

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.

Reporting: The final report to be submitted to Neema 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 and water quantity;


• Proposed drilling site;


• Proposed drilling cost;


• Proposed drilling method, and its applicability;


• Ground water permit 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. Proposed activity schedule with clear timelines to perform the assignment


3. Financial proposal indicating the cost rates and other charges applicable.


4. CV of the lead Consultant showing a proven track of field technical experience of the Consultant.


5. 2 Samples of survey reports for consultancies performed in the last 3 years especially in similar geological and climatical zones as Turkana with reference letters for each hydro-geological surveys


6. Proof of availability of all the equipments required to perform the survey.


7. Availability to perform the assignment at the earliest possible time.

The deadline for submitting proposals is 21st December 2015 at 4.00 pm. 

Proposals should be sent to Neema Poultry enterprise e-mail: neemagroup98@gmail.com and cc: to apeicbn@yahoo.com, l.kimani@cezam-usadf.org and e.kaniu@cezam-usadf.org. 

The subject of the e-mail should clearly indicate “Hydrogeological Survey Consultancy”