North America Crude Oil Marketing - August 2007 Summary California Bulletins 07-CA142 to 07-CA164, 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	CA142 08/01	CA143 08/02	CA144 08/03	CA145 08/06	CA146 08/07	CA147 08/08	CA148 08/09	CA149 08/10	CA150 08/13	CA151 08/14	CA152 08/15	CA153 08/16
Buena Vista Hills		73.50	73.85	72.45	69.00	69.30	68.90	68.25	68.15	68.30	69.05	70.00	67.60
Coalinga		68.25	68.60	67.20	63.75	64.00	63.60	62.95	62.85	63.00	63.75	64.70	62.30
Huntington Beach		69.75	70.10	68.70	65.25	65.50	65.10	64.45	64.35	64.50	65.25	66.20	63.80
Kettleman Hills		76.90	77.25	75.85	72.40	72.75	72.35	71.70	71.60	71.75	72.50	73.45	71.05
Lost Hills		75.20	75.55	74.15	70.70	71.00	70.60	69.95	69.85	70.00	70.75	71.70	69.30
McKittrick		67.50	67.85	66.45	63.00	63.25	62.85	62.20	62.10	62.25	63.00	63.95	61.55
Midway Sunset		67.50	67.85	66.45	63.00	63.25	62.85	62.20	62.10	62.25	63.00	63.95	61.55
Seal Beach		74.50	74.85	73.45	70.00	70.30	69.90	69.25	69.15	69.30	70.05	71.00	68.60

California	API	CA154 08/17	CA155 08/20	CA156 08/21	CA157 08/22	CA158 08/23	CA159 08/24	CA160 08/27	CA161 08/28	CA162 08/29	CA163 08/30	CA164 08/31	Mthly Avg
Buena Vista Hills		68.60	67.65	66.00	65.80	66.30	67.55	68.20	67.95	69.70	69.55	70.10	69.0081
Coalinga		63.30	62.35	60.70	60.50	61.00	62.25	62.90	62.65	64.40	64.25	64.80	63.7177
Huntington Beach		64.80	63.85	62.20	62.00	62.50	63.75	64.40	64.15	65.90	65.75	66.30	65.2177
Kettleman Hills		72.05	71.10	69.45	69.25	69.75	71.00	71.65	71.40	73.15	73.00	73.55	72.4484
Lost Hills		70.30	69.35	67.70	67.50	68.00	69.25	69.90	69.65	71.40	71.25	71.80	70.7081
McKittrick		62.55	61.60	59.95	59.75	60.25	61.50	62.15	61.90	63.65	63.50	64.05	62.9677
Midway Sunset		62.55	61.60	59.95	59.75	60.25	61.50	62.15	61.90	63.65	63.50	64.05	62.9677
Seal Beach		69.60	68.65	67.00	66.80	67.30	68.55	69.20	68.95	70.70	70.55	71.10	70.0081

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.