Charl Twal  
P.O.Box 780
Madaba
17110
Jordan
Cell: 00 962 75385625
charltwal@yahoo.com
 Experience 
CEC, Sana'a November 2006 - February 2007
Groundwater Modeler
Developing groundwater flow and Transport models for the seven cities: Ma'abar, Dhamar, Attaq, Al Jawf, Mareb, Al Baidah, and Al Gaidah in Yemen.
   
Kocks and Dar Al Omran, Seyuin February 2006 - October 2006
Groundwater modeler
Developing Groundwater flow and NO3 Transport models for Seyuin, Tarim and Wadi Bin Ali in Yemen.
   
Hydrotec, Int, Madaba September 2005 - January 2006
Groundwater modeler
Hydrotec Engineering conduting a groundwater flow model and pumping test analysis for Al Keena Factory Groups.
   
Attkens, Amman October 2004 - July 2005
Groundwater modeler
Updating existing Groundwater flow models for the Azraq Basin, Wadi Mujeb Basin, Amman Zarqa Basin and Yermouk Basin. And simulation of Aquifers restoration.
   
Consolidated Consultant and Hydrotec Int, Amman February 2002 - November 2003
Groundwater modeler
Updating existing Groundwater flow models and developing Transport models for the Azraq Basin, Wadi Mujeb Basin, Amman Zarqa Basin and Yermouk Basin. And simulation of Aquifers restoration.
Developing of Particle Tracking of Groundwater flow and advective transport of contaminants (pollution) for the Jerash Springs, Salt Springs, Wadi Sier Springs and Rusifa Wells.
   
4Es, Amman March 1999 - September 1999
Hydrogeologist
Hydrogeological Study For Well Production In Um El Qundum/Jordan. (Our Lady Of Peace Project).
   
RJGS, Amman October 1999 - November 1999
Hydrogeologist
Providing Traning Course: Contouring and 3D Surface Mapping for Scientists and Engineers.
   
Ideal Solution, Amman May 1999 - June 1999
Hdrogeologist
Providing Traning Course: Analysis and evaluation of Pumping Test Data.
   
ARIJ, Ramalah September 1998 - December 1998
Groundwater modeler
Estimation of Groundwater Recharge for the Eastern Basin in the West Bank using Unsaturated Flow Model (MUST)
   
JICA, Amman February 1998 - April 1998
Hydrogeologist
The Evaluation Study of the Project for Improvement of Solid Waste Management in Major Local Areas in Jordan (JICA).
   
JICA, Amman June 1998 - December 1998
Hydrogeologist
Country Profile Study on Environment (JICA).
   
Al Shamil Engineering, Amman September 1994 - October 1994
Hydrogeologist
Providing a Traning Cours in the Prinsiple of Hydrogeology using Groundwater for Windows (GWW).
   
UNDP, Amman September 1994 - December 1997
Groundwater modeler
Azraq Oasis Conservation Project (UNDP), as Mathematical modeler. During this period my performance were:

Data Base Management for 630 wells were prepared using Spreadsheet (Excel) and the GROUNDWATER Information System For Windows from U.N (GWW) and Arc View 3.0a (GIS).

Management Information System, for water quality and interpretation for the collected samples from the Shallow and Middle aquifers using Spreadsheet (Excel).

Simulation of Groundwater flow and Transport modeling using Mathematical model MODFLOW (PM3).

Mapping & data analysis using GIS.
 Education 
UNISCO IHE Delft, The netherlands, Delft
Master of Science - Engineering Hydrology, September 1997
Thesis – Interaction Between Groundwater and Surface Water Using Modflow and Duflow (Overijssel Province – The Netherlands).
   
Moscow State University, Moscow
Master of Science - Engineering Geology & Hydrogeology, 1994
Thesis - Groundwater flow model (MODFLOW) for the Upper Aquifer in Delverzin Steppe, Tajikistan – Uzbekistan Republics.
 COMPUTER SKILLS 
The ability to work with PC using the following packages:
1. Windows XP
2. WinWord
3. Excel & Lotus 123.
4. Power point.
5. Arc View + Spatial Analysis (GIS).
6. Pmwin 7 (prossecing Modflow), Surfer 8, GWW (Groundwater Information System), Aquatest pro (Pumping Test Analysis).
7. SEATWAT
 REFERENCES 
Dr. Iad Hussain – CEC.
Eng. Ismail Hashim – Hydrotec Engineering
Eng. Sulaiman Shafi'ai – Dar Al Omran.