Kimberly Ritrievi, president of The Ritrievi Group LLC, has been appointed to the board of directors at Tetra Tech.
Her election brings the number of Tetra Tech directors to nine and eight of them are outside directors, Tetra Tech announced Friday.
Dan Batrack, Tetra Tech chairman and CEO, said Ritrievi brings more than two decades of financial analysis and technical experience to the board.
Ritrievi has previously worked at Goldman, Sachs & Co., Credit Suisse First Boston, Lehman Brothers, Paine Webber and ARCO Chemical.
She also serves on the advisory boards of Harvard University, the Massachusetts Institute of Technology and Princeton University.