Tri-Valley Corporation (NYSE Amex:TIV) announced today that it has rescheduled the release date and conference call of its financial results for the second quarter ended June 30, 2011. The Company now expects to file its Form 10-Q for the second quarter ended June 30, 2011 on Friday, August 19, 2011. It will host a conference call and webcast on Monday, August 22, 2011, at 4:30 p.m. Eastern/1:30 p.m. Pacific Time to discuss the second quarter financial results and current corporate developments. The dial-in number for the conference call is 877-941-9205. A taped replay of the conference call will also be available beginning approximately one hour after the call’s conclusion and will remain available for seven days. It can be accessed by dialing 800-406-7325 and passcode 4464851#. To access the live webcast of the call, visit Tri-Valley’s website at www.tri-valleycorp.com. An archived webcast will also be available at www.tri-valleycorp.com. 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.