----

----

----

| TRI-VALLEY CORPORATION                                                       |
|------------------------------------------------------------------------------|
| Economic Reserves at January 1, 2011All  Reserve CategoriesTable 1 |
|                                                                         | Remaining                                      Before TaxReserves                                         Cash Flow(Mbb)                                               NPV (4)(5) |
|                                                                         | WI | RI | Net (1) | 0.0% | 5.0% | 8.0% | 10.0% | 15.0% | 20.0% |

| Proved Developed Producing |
|----------------------------|
|  Heavy Oil            | 228.7 | 47.3 | 218.8 | 12,596.2 | 10,618.5 | 9.669.3 | 9,114.7 | 7,948.3 | 7.026.9 |
|  Total                |   |   |   | 12,596.2 | 10,618.5 | 9.668.3 | 9114.7 | 7,984.3 | 7,026.9 |

| Proved Developed Non-Producing |
|--------------------------------|
|  Total                    |   |   |   | - | - | - | - | - | - |

| Proved Undeveloped |
|--------------------|
|  Heavy Oil    | 769.3 | 156.7 | 733.6 | 33,043.2 | 25,261.5 | 21,645.7 | 19,577.3 | 15,356.5 | 12,175.4 |
|  Total        |   |   |   | 33,043.2 | 25,261.5 | 21,645.7 | 19,577.3 | 15,356.5 | 12,175.4 |

| Total Proved    |
|-----------------|
|  Heavy Oil | 997.9 | 203.9 | 952.4 | 45,639.5 | 35,880.0 | 31,315.0 | 26,692.1 | 23,304.8 | 12,202.3 |
|  Total     |   |   |   | 45,639.5 | 35,880.0 | 31,315.0 | 26,692.1 | 23,304.8 | 12,202.3 |

| Total Proved + Provable |
|-------------------------|
|  Heavy Oil         | 805.8 | 155.3 | 759.7 | 37,820.7 | 29,358.4 | 25,392.6 | 23,112.1 | 18,425.3 | 14,856.4 |
|  Total             |   |   |   | 37,820.7 | 29,358.4 | 25,392.6 | 23,112.1 | 18,425.3 | 14,856.4 |

| Total Proved + Provable |
|-------------------------|
|  Heavy Oil         | 1,803.7 | 359.2 | 1,712.0 | 83,460.1 | 65,238.4 | 56,707.6 | 51,804.2 | 41,730.1 | 34,058.7 |
|  Total             |   |   |   | 83,460.1 | 65,238.4 | 56,707.6 | 51,804.2 | 41,730.1 | 34,058.7 |

| BOE Reserves & NPV/BOE (2)(3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Proved DevelopedProducing                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | 228.7 | 47.3 | 218.8 | 45.65 | 38.48 | 35.04 | 33.03 | 28.80 | 25.46 |
| Proved DevelopedNon-Producing                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | - | - | - | - | - | - | - | - | - |
| Proved Undeveloped                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 769.3 | 156.7 | 733.6 | 35.69 | 27.28 | 23.38 | 21.14 | 16.59 | 13.15 |
| Total Proved                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 997.9 | 203.9 | 952.4 | 37.97 | 29.85 | 26.06 | 23.87 | 19.39 | 15.98 |
| Total Probable Additional                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | 805.8 | 155.3 | 759.7 | 39.35 | 30.55 | 26.42 | 24.05 | 19.17 | 15.46 |
| Total Proved + Probable                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | 1803.7 | 359.2 | 1,712.0 | 38.59 | 30.16 | 26.22 | 23.95 | 19.29 | 15.75 |
|       (1)           After royalty deductions(2)           Oil Equivalent based on 6:1 Mcf/bbl Gas 1:1 bbl/bbl Liquids.(3)           Based on Co. Share(4)           No allowances was made for the degree of risk associated with any of the reserve categories(5)           Costs associated with extraction of natural gas products have in most cases been deducted from the natural gas revenues. |

----

| TRI-VALLEY CORPORATION                                         |
|----------------------------------------------------------------|
| Table 2Co. Share Changes since January 1, 2010                 |
|                                                           | PDP | PNP | PUD | TP | P+PDP | P+PNP | P+PUD | TPP |
| Light Oil (Mbbl)                                               |   |   |   |   |   |   |   |   |
| Opening Balance on Jan. 1, 2010                                | - | - | - | - | - | - | - | - |
| Total Changes                                                  | - | - | - | - | - | - | - | - |
| Balance After Changes                                          | - | - | - | - | - | - | - | - |
| Amount from Jan. 1, 2010 to Jan. 1, 2011                       | - | - | - | - | - | - | - | - |
| Remaining Amount as of Jan. 1, 2011                            | - | - | - | - | - | - | - | - |
| Total Amount                                                   | - | - | - | - | - | - | - | - |
| Outstanding Balance (1)                                        | - | - | - | - | - | - | - | - |
| Heavy Oil (MBBl)                                               |   |   |   |   |   |   |   |   |
| Opening Balance on Jan. 1, 2010                                | 302.0 | - | 925.9 | 1,227.9 | 302.0 | - | 1,887.0 | 2,189.1 |
| Total Changes                                                  | - | - | - | - | - | - | - | - |
| Balance After Changes                                          | 302.0 | - | 925.9 | 1,227.9 | 302.0 | - | 1,887.0 | 2,189.1 |
| Amount from Jan. 1, 2010 to Jan. 1, 2011                       | 26.1 | - | - | 26.1 | 26.1 | - | - | 26.1 |
| Remaining Amount as of Jan. 1, 2011                            | 275.9 | - | 925.9 | 1,201.9 | 275.9 | - | 1,887.0 | 2,163.0 |
| Total Amount                                                   | 302.0 | - | 925.9 | 1,227.9 | 302.0 | - | 1,887.0 | 2,189.1 |
| Outstanding Balance (1)                                        | - | - | - | - | - | - | - | - |
| Sales Gas (MMcf)                                               |   |   |   |   |   |   |   |   |
| Opening Balance on Jan. 1, 2010                                | - | - | - | - | - | - | - | - |
| Total Changes                                                  | - | - | - | - | - | - | - | - |
| Balance After Changes                                          | - | - | - | - | - | - | - | - |
| Amount from Jan. 1, 2010 to Jan. 1, 2011                       | - | - | - | - | - | - | - | - |
| Remaining Amount as of Jan. 1, 2011                            | - | - | - | - | - | - | - | - |
| Total Amount                                                   | - | - | - | - | - | - | - | - |
| Outstanding Balance (1)                                        | - | - | - | - | - | - | - | - |
| Liquids (Mbbl)                                                 |   |   |   |   |   |   |   |   |
| Opening Balance on Jan. 1, 2010                                | - | - | - | - | - | - | - | - |
| Total Changes                                                  | - | - | - | - | - | - | - | - |
| Balance After Changes                                          | - | - | - | - | - | - | - | - |
| Amount from Jan. 1, 2010 to Jan. 1, 2011                       | - | - | - | - | - | - | - | - |
| Remaining Amount as of Jan. 1, 2011                            | - | - | - | - | - | - | - | - |
| Total Amount                                                   | - | - | - | - | - | - | - | - |
| Outstanding Balance (1)                                        | - | - | - | - | - | - | - | - |
| Sulphur (MLT)                                                  |   |   |   |   |   |   |   |   |
| Opening Balance on Jan. 1, 2010                                | - | - | - | - | - | - | - | - |
| Total Changes                                                  | - | - | - | - | - | - | - | - |
| Balance After Changes                                          | - | - | - | - | - | - | - | - |
| Amount from Jan. 1, 2010 to Jan. 1, 2011                       | - | - | - | - | - | - | - | - |
| Remaining Amount as of Jan. 1, 2011                            | - | - | - | - | - | - | - | - |
| Total Amount                                                   | - | - | - | - | - | - | - | - |
| Outstanding Balance (1)                                        | - | - | - | - | - | - | - | - |
| BOE (Mbbl)                                                     |   |   |   |   |   |   |   |   |
| Opening Balance on Jan. 1, 2010                                | 302.0 | - | 925.9 | 1,227.9 | 302.0 | - | 1,887.0 | 2,189.1 |
| Total Changes                                                  | - | - | - | - | - | - | - | - |
| Balance After Changes                                          | 302.0 | - | 925.9 | 1,227.9 | 302.0 | - | 1,887.0 | 2,188.1 |
| Amount from Jan. 1, 2010 to Jan. 1, 2011                       | 26.1 | - | - | 26.1 | 26.1 | - | - | 26.1 |
| Remaining Amount as of Jan. 1, 2011                            | 275.9 | - | 925.9 | 1,201.9 | 275.9 | - | 1,887.0 | 2,163.0 |
| Total Amount                                                   | 302.0 | - | 925.9 | 1,227.9 | 302.0 | - | 1,887.0 | 2,189.1 |
| Outstanding Balance (1)                                        | - | - | - | - | - | - | - | - |
| (1) Outstanding Balance = Total Amount + Balance After Changes |