Determination of Optimal Discharge at SB-2 Production Well at PT Calbee Wings Food in Walahar Village, Klari District, Karawang Regency, West Java Province
Abstract
PT Calbee Wings Food is a company engaged in the food industry, especially snacks, located on Jl. Raya Curug-Kosambi, Walahar Village, Klari District, Karawang Regency, West Java Province. The company utilises groundwater for production purposes, and to support the provision of clean water, a pumping test was carried out on the existing borehole (SB-2). Pumping aims to determine the optimal well capacity in groundwater utilisation using boreholes. The method used in this observation is a vertical downhole and the Hantush-Bierschenk method is used to analyse the step drawdown test data. The values of the Aquifer Loss Coefficient (B) and Well Loss Coefficient (C) are 0.0926 and 0.0002, respectively. Assuming that the efficiency of the well of 75% is an efficient condition, the optimum pumping discharge value is 1.85 liter/second. The decrease in groundwater level occurs due to pumping which can be classified in a safe zone condition which is <40% or 34.82% in the situation of maximum pumping discharge (2.38 liter/second).
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