Tri-Valley Corporation (NYSE Amex:TIV) today announced it will present at the Independent Petroleum Association of America (IPAA) Oil & Gas Investment Symposium New York (OGIS New York) on Wednesday, April 13, 2011, at 2:25 p.m. ET. Tri-Valley’s President and CEO, Maston N. Cunningham, and its Chief Financial Officer, John E. Durbin, will review the Company’s business strategy and recent corporate events. Last year, this symposium attracted over 1,600 attendees, including over 800 buy/sell-side analysts. Attendance at this conference is by invitation only. Tri-Valley will offer a live audio webcast of its presentation which may be accessed at the Investor Relations section of the Company’s website at www.tri-valleycorp.com. An archived replay of the presentation will be available for 90 days, also at www.tri-valleycorp.com. The Company also announced that its independent public accounting firm included a going concern qualification in their otherwise unqualified report on the Company's financial statements for the fiscal year ended December 31, 2010. The financial statements are contained in the Company's Annual Report on Form 10-K, filed with the Securities and Exchange Commission on March 22, 2011. About Tri-Valley Tri-Valley Corporation explores for and produces oil and natural gas in California and has two exploration-stage gold properties in Alaska. Tri-Valley is incorporated in Delaware and is publicly traded on the NYSE Amex exchange under the symbol "TIV." Our Company website, which includes all SEC filings, is www.tri-valleycorp.com.