Singkawang covers an area bounded an area bounded by the equator and 1 00' North latitude and 108derajat00' and 109derajat30' East longitude (Figure 1). tHe islands and land area within the sheet form part of the West Kalimantan Provice,with its capital in pontianak to the south. The area is part of the pontianak District and Sambas District (Kabupa…