This project focuses on monitoring the noise levels, river water and ground water qualities of Taoyuan County to understand the varying trend of the monitored analytes. The trends of the variations were analyzed and reviewed to provide the Environmental Protection Office a reference for future regulations. There are 12 environmental noise and 12 traffic noise monitoring stations, which were continuously monitored for 48 hours twice every quarter. The 2013 monitoring results show that the noise pass rate was 100%. There are three military reserved well and thirty-two regular monitoring wells which were monitored for groundwater quality. The analytical results of 2013 dry season indicated that the proportion of the wells that exceeded the type II ground water monitoring standards is 58/64. The analytes exceeding standards were nitrate nitrogen（1 out of 64）,copper(1 out of 64) , ammonia nitrogen (10 out of 64),iron （22 out of 64）and manganese（24 out of 64）. In addition, the concentration of trichloroethylene found in Nei Ding Elementary School monitoring well of Chung Li industrial park exceeds the type II ground water pollution standards. The result was about 0.15mg/L, which was consistent with the historical data. Nineteen monitoring stations for the rivers were sampled once every quarter to monitor the river water qualities. The analytical results of 2013 indicated that most river water bodies were moderately polluted. The analytes that exceeded the Class C internal surface water quality standards were coliform group（48 out of 76）,suspended solids（14 out of 76）,biological oxygen demand（41 out of 76）,ammonia nitrogen （72 out of 76）.The analytes that exceeded the environmental standards were zinc（3 out of 76）、lead(1 out of 76)、copper（30 out of 76）and manganese（64 out of 76）. Only one reservoir was monitored for water quality. Samples were collected once every quarter. The result of 2013 indicated that heavy metals met the Class A internal surface water quality standards and environmental standards.

Noise Level Monitoring、River Water Quality Monitoring、Ground Water Quality Monitoring、Taoyuan County