【Paper】

Importance of Clarifying Site Characteristics on Stabilization of Waste Deposits

Kazuo Kamura* and Yasuhiro Yamazaki*†
* Environmental Research Center of Chiba
*† Present address: Chiba Prefectural Government
† Correspondence should be addressed to Kazuo Kamura:
Environmental Research Center of Chiba
（1-8-8 Iwasakinishi, Ichihara-shi, Chiba, 290-0046 Japan）


Abstract
Behaviors and properties of permeable water in waste deposits were studied at a controlled landfill site. Three observation wells of different depths were installed in the site. The depth of the screen ranged from 1 to 4m in the shallow well, 4 to 7m in the middle well and 7 to 10m in the deep well. Temporal changes of the water-table level and the quality of the water were examined for each well throughout the year. In addition, electrical prospecting was carried out in the site to clarify the structure of waste deposits. These results show that the waste deposits consist of permeable and impermeable zones. This implies that the behaviors of the water in the deposits should be clarified with respect to interpreting the stabilization of the deposits by the temporal changes of the quality in leachate.


Key words: controlled landfill site, stabilization, leachate, permeable water, resistivity