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Korea: 1. General description of why an area is selected Han River is the most important river in Korea. More than twenty million people use the water. So it is very important to sustain good quality water is very important. But there are many point sources of pollution like agricultural and animal farms and factories in the Han River basin. And there is non point sources of pollution like transportation. So it will be very meaningful to monitor the water quality of Han River. Currently, waste water generation by homes in Seoul is 4.75 million tons a day, while the combined capacity of the 4 filtration plants is enough to treat 61% of sewage. The 2nd-phase construction of Kayang Waste Water Treatment Plant will be completed in 2001. Daily capacity of waste water treatment will be increased to 5.4 million tons by 1996 so as to purify all the waste water from homes. Water polluting businesses will be supervised very strictly to improve the water quality of the Han River. 2. Specific description of the location North Han River (St. 1) and South Han River (St. 2) meet at Yangsoori (St. 3). Han River flows through Seoul (Sts. 4, 5 and 6). Han River meets Yimjin River (St. 7) which flows from North Korea. Han River finally flows into the Yellow Sea(St. 8). 3. Geographic coordinates of the sampling locations All the sampling stations are located between 37 and 38 degrees north in the latitude and 126.5 degrees and 128 degrees in the longitude. 4. Sampling plan Water and sediment samples will be collected in the dry and rainy seasons from 8 sampling stations. 5. Country and specific area of maps 
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