Property Descriptions

Moffat Ranch
Tri-Valley has leased approximately 5,700 acres of the Moffat Ranch Gas Field west of Madera, California approximately 2.5 hours by auto north of our Bakersfield, CA headquarters. Upon acquisition, this field consisted of three idle wellbores and deeper drilling potential. In late 2007, the Company drilled the deepest wellbore penetration in the field, to below 10,000 feet, to evaluate more than 14 potential producing horizons. Two of these potential gas zones were evaluated for productive potential in 2007 and one was successfully tested at over one million cubic feet per day. In 2008, the well was put into production. In 2008, we attempted to restore the three idle wells to production service but, so far, they sand up quickly and have not sustained commercial production.

Chowchilla Ranch
We purchased approximately 6,670 acres of mineral rights, which basically covers what was the Chowchilla Ranch in Madera County, California. This land position is held by production at this time. We believe this land to be very under developed and under exploited. We plan to re-enter, recomplete and further infill drill the leasehold position. We have also leased approximately 7,500 additional acres offsetting the 6,670 acre Chowchilla property.

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Sunrise-Mavel
In 2005, we successfully hydraulically fractured a 1,000 feet portion of the 3,000 feet horizontal portion of the well bore in the Sunrise-Mayel #2H Redrill #2 well in the Sunrise Natural Gas Project in Delano, California. The well was hydraulically fractured utilizing gelled diesel, which carried in approximately 138,000 pounds of sand. Again, while mechanically successful, the operation did not result in the well producing hydrocarbons at commercial rates. As with the Ekho Project, we continue to review all available techniques to bring the Sunrise Project potential to commercial realization because of the volume of natural gas in place in the tight reservoir. The Sunrise project is included in the joint study with the scientific research organization. We believe the tight McClure Shale which hosts an estimated 3 trillion cubic feet of gas in the mapped area of closure can ultimately be stimulated to release a portion of the gas in place at commercial rates once the right method is identified.

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Rio Vista
This project in northern California consists of five wells producing approximately 400,000 cubic feet of gas per day from two separate leases. To date, the Hanson Lease has produced over 30 billion cubic feet of gas from this field.

The Hanson well #2, which was converted to plunger lift in the first quarter, continues to produce at high gas rates thus indicating a successful long term application of the technology. Other Rio Vista area long term, proved-developed-producing gas reserves continued at customary levels. This long term, sustained production from our Rio Vista gas fields continues to add sustained, low lifting cost production, and increasing cash flow in response to recent higher gas prices.

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Bethel Island
This project in northern California consists of two wells producing approximately 60,000 cubic feet of gas per day. To date, Tri-Valley has produced over 20 billion cubic feet of gas from this project. A third well is being contemplated in this once prolific producing area. Presently, Tri-Valley is waiting for the results of a 3-D seismic program being undertaken by another operator to determine whether or not Tri-Valley commits to drilling a 3rd well.

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