Hi Jiqiu,
Great relevant topic. For everyone's information, Dr. Cris B. Liban from ASCE has been one of the individuals pushing for standards and best practices on sustainable infrastructure. Let me know if you wish to learn more.
Also, there are existing voluntary rating systems such as Envision, LEED, and Greenroads that provide many best practice principles.
One practice that I highly regard is the use of Life Cycle Assessment. Cradle to Grave methodology allows engineers to fully understand the long term impact of their projects.
Best regards,
------------------------------
Paul Lee P.E., M.ASCE
Civil Engineering Associate
Los Angeles Dept. of Water and Power
Los Angeles CA
------------------------------