North America Crude Oil Marketing - April 2010 Summary California Bulletins 10-CA62 to 10-CA82, 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	CA62 04/01	CA63 04/05	CA64 04/06	CA65 04/07	CA66 04/08	CA67 04/09	CA68 04/12	CA69 04/13	CA70 04/14	CA71 04/15	CA72 04/16
Buena Vista Hills		81.75	83.50	83.75	82.80	82.30	81.60	81.00	80.45	82.25	81.90	79.65
Coalinga		77.00	78.75	79.00	78.05	77.55	76.85	76.25	75.70	77.50	77.15	74.90
Huntington Beach		75.90	77.65	77.90	76.95	76.45	75.75	75.15	74.60	76.40	76.05	73.80
Kettleman Hills		84.85	86.60	86.85	85.90	85.40	84.70	84.10	83.55	85.35	85.00	82.75
Lost Hills		83.30	85.05	85.30	84.35	83.85	83.15	82.55	82.00	83.80	83.45	81.20
McKittrick		76.30	78.05	78.30	77.35	76.85	76.15	75.55	75.00	76.80	76.45	74.20
Midway Sunset		76.30	78.05	78.30	77.35	76.85	76.15	75.55	75.00	76.80	76.45	74.20
Seal Beach		80.15	81.90	82.15	81.20	80.70	80.00	79.40	78.85	80.65	80.30	78.05

California	API	CA73 04/19	CA74 04/20	CA75 04/21	CA76 04/22	CA77 04/23	CA78 04/26	CA79 04/27	CA80 04/28	CA81 04/29	CA82 04/30	Mthly Avg
Buena Vista Hills		77.85	79.85	80.10	80.10	81.85	80.95	79.20	80.00	82.70	83.70	81.2900
Coalinga		73.10	75.10	75.35	75.35	77.00	76.10	74.35	75.15	77.85	78.85	76.5133
Huntington Beach		72.00	74.00	74.25	74.25	75.95	75.05	73.30	74.10	76.80	77.80	75.4267
Kettleman Hills		80.95	82.95	83.20	83.20	85.00	84.10	82.35	83.15	85.85	86.85	84.4033
Lost Hills		79.40	81.40	81.65	81.65	83.40	82.50	80.75	81.55	84.25	85.25	82.8400
McKittrick		72.40	74.40	74.65	74.65	76.30	75.40	73.65	74.45	77.15	78.15	75.8133
Midway Sunset		72.40	74.40	74.65	74.65	76.30	75.40	73.65	74.45	77.15	78.15	75.8133
Seal Beach		76.25	78.25	78.50	78.50	80.30	79.40	77.65	78.45	81.15	82.15	79.7033

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.