Five waste samples, two ground water samples and five sea water samples were collected from Jiangjyun River Site at Tainan County and this site was assessed by HRS (hazard ranking system). Results indicate: 1. The waste samples were municipal waste and the TCLP results show that they were below the regulated hazardous waste standard. 2. All ground water samples were below the second ground water control standard. 3. No significant impact on the seawater was observed, nor was on the oyster. 4. HRS shows this site is belonged to class-D. 5. We suggest using constitutional control by limitary any access to the site as current site management.

hazardous ranking system(HRS),illegal disposal,ground water