TOR for Hydrogeological/Geophysical Survey, EIA, Drilling Supervision, Design of Water Abstraction and Reticulation System in Isiolo County at Action Against Hunger International

Specific Objectives

• Document existing knowledge on abstractions and ground water in the area
• Undertake geophysical survey for three location within the target sites. For each site assess feasibility and if possible, recommend the best site with installation depth for pump and estimated yield
• Prepared summary of areas hydrogeology and geology.
• Undertake Environmental Impact Assessment project summary for the proposed project at the school.
• Propose the most economical water abstraction, storage and reticulation system.
• Prepare construction BOQs and drawings for recommended borehole site.

Scope of the Work

• The hydro-geological/geophysical investigations will be carried out in a multi-step approach;
• Desk study: Review of existing data, topographical maps, satellite images, existing studies and borehole site investigations in the area, meteorology, geological reports and maps (if available), borehole and surface water records, etc.
• Hydro-geological fieldwork: Detailed reconnaissance survey of project area. (GPS coordinates/P-codes, water level measurements, condition and performance of these boreholes, usage and performance where applicable) inspection of geological, geomorphological and structural characteristics of the investigated area; verification of existing data and findings.
• Geophysical survey at the site specifically seismoelectric with other methods (resistivity/IP profiling or vertical electrical/IP soundings)
• Analysis of hydro-geological/geophysical data.
• Compilation, analysis, and evaluation of the gathered data and information.
• Site selection and Prepare recommendation report
• Water abstraction, storage and reticulation system.
• Estimate the daily water demand for the community
• Design the most economical water abstraction system taking intaccount the available sources of energy.
• Design an appropriate storage and reticulation system.
• Expected output of the consultancy

Hydrogeological report including

• Desk review of hydrogeology, geology (identify potential faults
• Overview of existing abstractions in the area
• Geophysics investigation results for proposed locations detailing proposed drilling depth and pump installation depth
• Analysis of the geology, based on desk study, current abstraction and geophycail investigation develop water balance, set
• Recommendations for borehole development, tinclude but not limited to, the following:
• Locations of recommended borehole expressed as a coordinate(s) and indicated on a sketch map
• Recommendations regarding borehole or well density and minimum spacing in the project area
• Recommended depth and maximum diameter.
• Recommended construction characteristics, e.g. wire-wound screen, grouting depth
• Anticipated yield
• Any other relevant information (e.g. need tmonitor neighboring boreholes during tests)

Environmental Impact Assessments including

• Assessment of potential impacts that may occur at all phases of project.
• Provide potential effects of the project and propose suitable mitigation measures.
• Develop environmental management and monitoring plan.
• Provide decommissioning/rehabilitation plan
• BOQ and drawings for the proposed borehole development (including drilling, pump installation and water reticulation).
• Supervision drilling – the consultancy costs tinclude the costs of borehole drilling supervision on your bid.

Roles and responsibilities

Consulting firm should:

• Have experience of drilling, Hydrology and geophysical investigation and show previous geophysical analysis reports
• Have experience in WASH and deliver his valid testimonials that show his involvement in similar consultancy work.
• A registered NEMA lead expert tundertake EIA project summary for the proposed borehole.
• Prior agreement with the methodology of lit review, sampling, data collection and other relevant issues
• Cover all expenses as per the ToR
• Delivery of reports in hard and soft copy for the client;
• File the reports with Water Resource Authority.
• Submit 5 hard copies and 1 soft copy of completed report tNEMA for licensing.
• Make a presentation tthe management.
• Supervise the drilling works as well as pump installation

ACF will:

• Prepare contractual agreement as per the offer;
• Provide official addresses of contact persons;
• Comment the draft reports
• Facilitate debriefing workshop
• Effect payments as per the agreement

Time frame

• The assignment is expected ttake one week (for both fieldwork and report compilation). The schedule shall be determined in discussion between ACF and the Consultant.

Application procedures

The Consultant is required tprovide the following

• Technical proposal on how the assignment will be conducted including equipment tbe used.
• Financial Proposal –The financial proposal shall clearly show the breakdown of costs (professional fees, applicable taxes and others).
• Must submit a copy of updated Valid Tax Compliance Certificate issued by the Kenya Revenue Authority (Will be verified on the KRA TCC Checker)
• Must submit copy of KRA pin/VAT Certificate.
• Must submit a copy of registration certificate and up tdate practicing license as an EIA expert, hydrogeologist
• Must submit the company profile indicating capacity tundertake the proposed environmental impact assessment /audit studies and hydrogeological assessment.
• Proof of similar consultancies undertaken within the past three years.
• Up tdate CVs of the technical personnel tundertake the proposed consultancy.
• Proposed activity timelines tperform the assignment.
• Availability tperform the assignment at the earliest possible time.