As an initial activity in establishing groundwater monitoring wells in the region, the SWIM P1 team is set to employ a georesistivity survey in partnership with DA-RAED Region 2. It is procedure that is widely used in the Phlippines in searching feasible groundwater source. It is simply the use of an instrument that injects electricity in the ground to determine the type and nature of materials thru their signature resistivity values.
The Training Program was attended by the participants from ISU-SWIM Project 1 headed by the SWIM R&D and Project 1 Program Leader Prof. Orlando F. Balderama, Ph.D. and with him; Engr. Elmer A. Rosete, URA and Project Staff 2; Engr. Czarimah L. Singson, SRS 2; Engr. Jeremy T. Balderama, SRS 1; Engr. Alvin John B. Felipe, SRS 1; Engr. Cesar U. Ramirez, SRS 1. The first day of the training commence at DA Regional Agricultural Engineering Division and after the simple opening program, the session immediately took place afterwards where the participants were oriented about the significance of the Water Code of the Philippines in groundwater exploration where Engr. Rinalyn Baawa went through the necessary provisions of PD 1067 and its implementing rules and regulations.
The geo-resistivity lecture of Engr. Wildy May Marasigan begins with basic hydrological principles governing subsurface science before she introduced the Geoelectric Resistivity Method, its importance, and its potential in subsurface survey. The georesistivity instrument which is owned by DA-RF02 is the OYO McOHM Profiler 8i, a multi-channel digital resistivity meter that uses a 2-Dimensional resistivity exploration that allows the user to get a visual image represented by the signature of the materials present below the earth was also mainstreamed and was properly discussed using their previous projects and activities involving subsurface survey.
In theory, the resource speakers have successfully conveyed the basic and relevant information in conducting a georesistivity survey to the participants. After the lecture proper, the participants, headed by Engr. Rosete and Engr. Singson, and the lecturers traveled to the survey site at Abulog, Cagayan for the 2nd Day of the Training.
During the Hands-on interactive demonstration of the instrument on Day 2. The participants actively participated in setting up the circuits and in establishing the connection of the electrodes. The demo was very comprehensive since the instrument’s interface is very user friendly and is accessible thru a tablet monitor. The system will also indicate if there is something wrong with the installation of the electrodes which causes poor data. Also, the decay plot function is effective in monitoring the data quality on-site.
Day 2: Field Activity at DA-NCES, Abulug, Cagayan