Environmental Systems Design (ESD), an international firm focusing on sustainable design of the built environment, has named David P. Callan, P.E., CEM, HBDP, LEED AP, a senior vice president and ...

David Brady Callan died at 83 on July 14, 2024. He was born on October 6, 1940, in Irondequoit, NY, the fourth of eight children of Phillip J. and Lucile Brady Callan. He was preceded in death by his ...

David Brady Callan died at 83 on July 14, 2024, after a two-year battle with colorectal cancer. He was the soul of kindness and a man of great spiritual depth. His wife Lin was at his side at Hospice ...