North America Crude Oil Marketing - August 2009 Summary California Bulletins 09-CA147 to 09-CA167, with Monthly Averages

Chevron has changed its posted prices as shown below: Effective 7:00 AM on the above listed effective date, subject to change without notice, Chevron will pay the following prices per barrel for crude oil and condensate delivered for its account into the custody of its authorized carrier or receiving agent. Prices are subject to deduction for transportation and other charges where applicable. Prices for oil apply to quantities measured by approved automatic custody transfer facilities or 100% tank table with customary adjustment of volume and gravity for temperature and full deduction for sediment and water.

* Prices are subject to a Gravity Adjustment Scale

California	API	CA147 08/03	CA148 08/04	CA149 08/05	CA150 08/06	CA151 08/07	CA152 08/10	CA153 08/11	CA154 08/12	CA155 08/13	CA156 08/14	CA157 08/17
Buena Vista Hills		69.65	69.55	70.10	70.05	69.05	68.70	67.55	68.25	68.60	65.60	64.85
Coalinga		64.25	64.15	64.70	64.65	63.65	63.30	62.15	62.85	63.20	60.20	59.45
Huntington Beach		64.05	63.95	64.50	64.45	63.45	63.10	61.95	62.65	63.00	60.00	59.25
Kettleman Hills		73.15	73.05	73.60	73.55	72.55	72.20	71.05	71.75	72.10	69.10	68.35
Lost Hills		71.40	71.30	71.85	71.80	70.80	70.45	69.30	70.00	70.35	67.35	66.60
McKittrick		63.50	63.40	63.95	63.90	62.90	62.55	61.40	62.10	62.45	59.45	58.70
Midway Sunset		63.50	63.40	63.95	63.90	62.90	62.55	61.40	62.10	62.45	59.45	58.70
Seal Beach		68.70	68.60	69.15	69.10	68.10	67.75	66.60	67.30	67.65	64.65	63.90

California	API	CA158 08/18	CA159 08/19	CA160 08/20	CA161 08/21	CA162 08/24	CA163 08/25	CA164 08/26	CA165 08/27	CA166 08/28	CA167 08/31	Mthly Avg
Buena Vista Hills		67.30	70.55	70.65	72.00	72.50	70.20	69.60	70.65	70.90	68.10	69.1742
Coalinga		61.90	65.15	65.25	66.60	67.10	64.80	64.20	65.25	65.50	62.70	63.7742
Huntington Beach		61.70	64.95	65.05	66.40	66.90	64.60	64.00	65.05	65.30	62.50	63.5742
Kettleman Hills		70.80	74.05	74.15	75.50	76.00	73.70	73.10	74.15	74.40	71.60	72.6742
Lost Hills		69.05	72.30	72.40	73.75	74.25	71.95	71.35	72.40	72.65	69.85	70.9242
McKittrick		61.15	64.40	64.50	65.85	66.35	64.05	63.45	64.50	64.75	61.95	63.0242
Midway Sunset		61.15	64.40	64.50	65.85	66.35	64.05	63.45	64.50	64.75	61.95	63.0242
Seal Beach		66.35	69.60	69.70	71.05	71.55	69.25	68.65	69.70	69.95	67.15	68.2242

Note: Prices in $/bbl

Measurement The prices are based upon computation of quantities by mutually acceptable automatic measuring equipment in accordance with the latest ASTM Standards and API Manual of Petroleum Measurement Standards (MPMS) generally accepted in the petroleum industry with deductions for full sediment, water and other impurities.