History
| 1978 |
Establishment of JEAS with management and technology study groups as well as six working groups by 65 member companies. "JEAS News" commences quarterly publication. |
| 1980 |
Overseas study program begins with overseas mission to take place once every two years. The number of member companies exceeds 100. |
| 1981 |
Overseas observation tours and field survey trips commence on a yearly basis. |
| 1988 |
The 10th Anniversary |
| 1991 |
The number of member companies exceeds 200. |
| 1993 |
The environmental assessment training program begins. |
| 1994 |
JEAS reorganizes itself to increase efficiency of management and promotion activities. |
| 1998 |
The 20th Anniversary Establishment of "Kansai" Branch, "Kyushyu" Branch, "Chubu" Branch. |
| 1999 |
Approved to be a corporate juridical person. |
| 2001 |
Establishment of "Hokkaido" Branch. |
| 2003 |
The 25th Anniversary |