|Exhibit 32.1                                                                                                                                                                                                                                                       
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|Certification Pursuant to 18 U.S.C. Section 1350                                                                                                                                                                                                                   
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|The undersigned, F. Lynn Blystone, President and Chief Executive Officer of Tri-Valley Corpoation, a Delaware corporation (the "Company"), pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes Oxley Act of 2002, hereby certifies that:
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|(1) the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2006 (the "Report") fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934; and                                                               
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|(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.                                                                                                           
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|Date:    August 9, 2006                                                                                                                                                                                                                                            

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|By: | /s/ F. Lynn Blystone                                   
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|    | F. Lynn Blystone, President and Chief Executive Officer