Identification Of Soil Resistivity Distribution In Ekoriparian Leuwi Padjadjaran Area Using 2D Electrical Resistivity Method

Research focused on the identification of soil resistivity distribution at the Ekoriparian Leuwi Padjadjaran area, University of Padjadjaran, Jatinangor, has been conducted using geoelectric resistivity method 2D with dipole - dipole configuration. Three survey lines were measured with the first and second lines being 2 meters long and the third line measuring 6 meters. Electrode spacing was set at 0.2 meters, with 10 electrodes on the first and second lines, and 30 electrodes on the third line. Data processing is done using the Res2Dinv software. The research results indicated that resistivity values in the range of 4.00 Ωm to 20.0 Ωm were interpreted as clay rocks, values from 20 Ωm to 200 Ωm were interpreted as silt rocks, and resistivity values in the range of 256 Ωm to 1024 Ωm were interpreted as sandy clay rocks. Based on the geology of the study area, the soil is a fine-grained soil, namely silt and sandy loam.

Mapping of pH, EC, and TDS Parameters to Identify Water Quality in Situ Cisanti

Situ Cisanti located at Tarumajaya Village, Kertasari District, Bandung Regency, West Java. Situ Cisanti has significant role in supporting the lives of the surrounding community, especially as the central source of clean water. This research was conduct to identify the water quality of Situ Cisanti by mapping the parameters of pH, Electrical Conductivity (EC), and Total Dissolved Solids (TDS). Measurement was take using Combometer Hanna Grocheck HI 9813-6 at 69 points spread over the research area. The result of pH measurement in Situ Cisanti has a range value from 7,7 to 9,7 with an average value of 9. The EC measurement range value is 0,1 mS/cm to 0,9 mS/cm with an average value of 0,13 mS/cm. The TDS measurement range value is 83 mg/L to 141 mg/L, while the average is 100,78 mg/L. Most of the pH values in the study area meet the quality standards for hygiene sanitation water, while the EC and TDS values are below the threshold value, considering it safe for health