Exhibit 16.1 August 10, 2006 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, DC 20549 Commissioners: We have read the statements made by Ridgewood Energy Q Fund, LLC (copy attached), which we understand will be filed with the Commission, pursuant to Item 4.01 of Form 8-K, as part of the Company's Form 8-K report dated June 8, 2006, as amended. We agree with the statements concerning our Firm in such Form 8-K. Very truly yours, /s/ Perelson Weiner LLP Perelson Weiner LLP