The district is bordered on the north by county highway no . 120 , on the east by rural highway no . 20 , on the south by touchien stream and likou embankment , and on the west by toulun urban planning area of chupei city . the total area covered is approximately 309 hectares 特定区范围北以120县道为界,东至竹20乡道,南达头前溪六家及隘口堤防,西侧则与竹北斗仑都市计画区为邻,计画面积约309公顷。