North America Crude Oil Marketing - September 2007 Summary California Bulletins 07-CA165 to 07-CA183, 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	CA165 09/04	CA166 09/05	CA167 09/06	CA168 09/07	CA169 09/10	CA170 09/11	CA171 09/12	CA172 09/13	CA173 09/14	CA174 09/17
Buena Vista Hills		71.05	71.70	72.15	72.55	73.35	74.10	75.75	75.85	74.60	75.80
Coalinga		65.75	66.40	66.85	67.25	68.05	68.80	70.45	70.55	69.30	70.50
Huntington Beach		67.25	67.90	68.35	68.75	69.55	70.30	71.95	72.05	70.80	72.00
Kettleman Hills		74.50	75.15	75.60	76.00	76.80	77.55	79.20	79.30	78.05	79.25
Lost Hills		72.75	73.40	73.85	74.25	75.05	75.80	77.45	77.55	76.30	77.50
McKittrick		65.00	65.65	66.10	66.50	67.30	68.05	69.70	69.80	68.55	69.75
Midway Sunset		65.00	65.65	66.10	66.50	67.30	68.05	69.70	69.80	68.55	69.75
Seal Beach		72.05	72.70	73.15	73.55	74.35	75.10	76.75	76.85	75.60	76.80

California	API	CA175 09/18	CA176 09/19	CA177 09/20	CA178 09/21	CA179 09/24	CA180 09/25	CA181 09/26	CA182 09/27	CA183 09/28	Mthly Avg
Buena Vista Hills		76.55	76.90	78.20	76.55	75.80	74.40	75.20	77.75	76.60	74.5250
Coalinga		71.25	71.60	72.90	71.25	70.45	69.05	69.85	72.40	71.25	69.2133
Huntington Beach		72.75	73.10	74.40	72.75	72.00	70.60	71.40	73.95	72.80	70.7250
Kettleman Hills		80.00	80.35	81.65	80.00	79.30	77.90	78.70	81.25	80.10	77.9867
Lost Hills		78.25	78.60	79.90	78.25	77.55	76.15	76.95	79.50	78.35	76.2367
McKittrick		70.50	70.85	72.15	70.50	69.70	68.30	69.10	71.65	70.50	68.4633
Midway Sunset		70.50	70.85	72.15	70.50	69.70	68.30	69.10	71.65	70.50	68.4633
Seal Beach		77.55	77.90	79.20	77.55	76.80	75.40	76.20	78.75	77.60	75.5250

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.