Exhibit 16.1 July 13, 2005 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We have read the statements made by Ecology and Environment, Inc. which were filed with the Commission, pursuant to Item 4.01 of Form 8-K, as part of the Company's Form 8-K report dated July 7, 2005. We agree with the statements concerning our Firm in such Form 8-K. Very Truly Yours, /s/PriceWaterhouseCoopers, LLP Cincinnati, OH