North America Crude Oil Marketing - December 2009 Summary California Bulletins 09-CA231 to 09-CA252, 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	CA231 12/01	CA232 12/02	CA233 12/03	CA234 12/04	CA235 12/07	CA236 12/08	CA237 12/09	CA238 12/10	CA239 12/11	CA240 12/14	CA241 12/15	CA242 12/16
Buena Vista Hills		75.95	74.20	74.05	73.05	71.50	70.20	68.25	68.10	67.45	67.10	68.30	70.25
Coalinga		71.10	69.35	69.20	68.20	66.65	65.35	63.40	63.25	62.60	62.25	63.45	65.40
Huntington Beach		70.55	68.80	68.65	67.65	66.10	64.80	62.85	62.70	62.05	61.70	62.90	64.85
Kettleman Hills		79.10	77.35	77.20	76.20	74.65	73.35	71.40	71.25	70.60	70.25	71.45	73.40
Lost Hills		77.50	75.75	75.60	74.60	73.05	71.75	69.80	69.65	69.00	68.65	69.85	71.80
McKittrick		70.40	68.65	68.50	67.50	65.95	64.65	62.70	62.55	61.90	61.55	62.75	64.70
Midway Sunset		70.40	68.65	68.50	67.50	65.95	64.65	62.70	62.55	61.90	61.55	62.75	64.70
Seal Beach		74.90	73.15	73.00	72.00	70.45	69.15	67.20	67.05	66.40	66.05	67.25	69.20

California	API	CA243 12/17	CA244 12/18	CA245 12/21	CA246 12/22	CA247 12/23	CA248 12/24	CA249 12/28	CA250 12/29	CA251 12/30	CA252 12/31		Mthly Avg
Buena Vista Hills		70.25	71.20	70.30	72.25	74.75	76.15	76.85	76.95	77.35	77.45		72.3790
Coalinga		65.40	66.35	65.45	67.40	69.90	71.30	72.00	72.10	72.50	72.60		67.5290
Huntington Beach		64.85	65.80	64.90	66.85	69.35	70.75	71.45	71.55	71.95	72.05		66.9790
Kettleman Hills		73.40	74.35	73.45	75.40	77.90	79.30	80.00	80.10	80.50	80.60		75.5290
Lost Hills		71.80	72.75	71.85	73.80	76.30	77.70	78.40	78.50	78.90	79.00		73.9290
McKittrick		64.70	65.65	64.75	66.70	69.20	70.60	71.30	71.40	71.80	71.90		66.8290
Midway Sunset		64.70	65.65	64.75	66.70	69.20	70.60	71.30	71.40	71.80	71.90		66.8290
Seal Beach		69.20	70.15	69.25	71.20	73.70	75.10	75.80	75.90	76.30	76.40		71.3290

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.