1. Water Project for Chasnigua, Honduras Graduate Students: John Jackson and Adrian Weaver Undergrads: Daniel Howell, John Stein, Eric Straily and Rebecca Walthall Faculty: Drs. David R. Munoz and Cathy Skokan dmunoz@mines.edudmunoz@mines.edu; cskokan@mines.educskokan@mines.edu

2. Collaborative Project People of Chasnigua CSM Geophysics Graduate Students CSM Engineering Undergraduate Students Civil Engineering Students from Universidad Autonoma de Honduras – Campus Valle Sula

3. Project Rationale – Reduce Vulnerability

4. March 2009 Trip - Purpose Spent eight days in Chasnigua with all of the students and Drs. Skokan and Munoz. Assessed the village needs. Mapped village with GPS. Extracted water samples for testing. Mapped the subsurface with electromagnetic instruments EM31, 34 and magnetometer to determine locations of interest for potential subsurface water.

5. March 2009 Measurements

6. EM34 – 40m Loop Spacing

7. Village Map from Google Earth & GPS Measurements Geophysics Project Existing System New Development

8. Bentley WaterCAD Modeling

9. Filters small particles Schmutzdecke provides effective purification to potable water standards Takes 10 to 20 days for Schmutzdecke to form and must be kept wet to maintain the biological layer Fairly easy to clean Sand Filter

10. Low maintenance filter for particles >100 Micron (.0039in) Made from durable, weather resistant and inexpensive materials Helps to make the sand filter last longer by filtering out the large particles Limited pooling effect means less contamination from animals drinking from the dammed water Particle Filter

11. Reinforced Polypropylene GeoMembrane Less Material Needed Labor Intensive Lower Cost

12. July 2009 Trip - Purpose Two graduate students and one undergraduate student travelled with Dr. Munoz Use DC resistivity to seek the location of fault zones and geological anomalies.

13. July 2009 Measurements

14. Approximate Locations of DC Resistivity Lines

15. DC Resistivity Results: NE/SW 500 m line, 20 m electrode spacing

16. DC Resistivity Results: NW/SE 500 m line, 10 m electrode spacing

17. DC Resistivity Results: NW/SE 500m line, 5 m electrode spacing

18. “More than an engineering project…” Thank you for your attention – Questions?