Our working team had investigated 171 zones including Taipei city ,Keelung county ,Taipei county ,Taoyaun county,Hsinchu city,Miaoli county , Taichung city and Taichung county .Total sampling area was 158.06 hectares . Total sampling points were 1993 .The area exceed controlling standard included Copper (Cu) 54.02 hectares, Chromiun (Cr) 32.09 hectares, Zinc (Zn) 18.73 hectares, Nickel (Ni) 27.91 hectares, Cadmium (Cd) 1.39 hectares, Mercury (Hg) 0.28 hectares and Lead (Pb) 1.50 hectares .The area exceed controlling standard was 64.75 hectares. The percentage of area exceed controlling standard was 40.33%. The area exceed monitoring standard included Copper (Cu) 17.38 hectares, Chromium (Cr) 5.45 hectares, Zinc (Zn) 8.33 hectares, Nickel (Ni) 11.66 hectares, Cadmium (Cd) 1.69 hectares, Mercury (Hg) 4.63 hectares and Lead (Pb) 1.18 hectares .The area exceed monitoring standard was 34.98 hectares. The percentage of area exceed monitoring standard was 22.13%. The sampling area in Keelung county was 0.41 hectares. There was no any area exceed controlling standard but the area exceed monitoring standard was 0.03 hectares. The sampling area in Taipei County was 13.69 hectares. The area exceed the controlling standard was 6.34 hectares and the area exceed monitoring standard was 2.76 hectares. The sampling area in Taoyaun County was 54.11 hectares. The area exceed the controlling standard was 17.14 hectares and the area exceed monitoring standard was 9.53 hectares. The sampling area in Miaoli County was 2.03 hectares. The area exceed the controlling standard was 0.75 hectares and the area exceed monitoring standard was 1.21 hectares. Mercury is the main pollutant. The sampling area in Hsinchu county was 63.53 hectares. The area exceed the controlling standard was 33.15 hectares and the area exceed monitoring standard was 12.51 hectares. There were only 0.49 hectares exceed controlling standard and 5.23 hectares exceed monitoring standard in Taichung city. There were

metal agriculture land,soil