North America Crude Oil Marketing - April 2007 Summary California Bulletins 07-CA61 to 07-CA78, 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	CA61 04/02	CA62 04/03	CA63 04/04	CA64 04/05	CA65 04/09	CA66 04/10	CA67 04/11	CA68 04/12	CA69 04/13	CA70 04/17
Buena Vista Hills		60.85	59.55	59.30	59.20	56.50	57.15	57.35	59.40	59.20	58.90
Coalinga		55.65	54.35	54.10	54.00	51.30	51.95	52.15	54.15	53.95	53.65
Huntington Beach		57.15	55.85	55.60	55.50	52.80	53.45	53.65	55.65	55.45	55.15
Kettleman Hills		64.25	62.95	62.70	62.60	59.90	60.55	60.75	62.80	62.60	62.30
Lost Hills		62.55	61.25	61.00	60.90	58.20	58.85	59.05	61.10	60.90	60.60
McKittrick		54.90	53.60	53.35	53.25	50.55	51.20	51.40	53.40	53.20	52.90
Midway Sunset		54.90	53.60	53.35	53.25	50.55	51.20	51.40	53.40	53.20	52.90
San Ardo		51.75	50.45	50.20	50.10	47.40	48.05	48.25	50.25	50.05	49.75
Seal Beach		61.85	60.55	60.30	60.20	57.50	58.15	58.35	60.40	60.20	59.90

California	API	CA71 04/19	CA72 04/20	CA73 04/23	CA74 04/24	CA75 04/25	CA76 04/26	CA77 04/27	CA78 04/30		Mthly Avg
Buena Vista Hills		57.40	59.40	61.90	60.60	61.85	61.05	62.45	61.70		59.7450
Coalinga		52.15	54.15	56.65	55.35	56.60	55.80	57.20	56.45		54.5133
Huntington Beach		53.65	55.65	58.15	56.85	58.10	57.30	58.70	57.95		56.0133
Kettleman Hills		60.80	62.80	65.30	64.00	65.25	64.45	65.85	65.10		63.1450
Lost Hills		59.10	61.10	63.60	62.30	63.55	62.75	64.15	63.40		61.4450
McKittrick		51.40	53.40	55.90	54.60	55.85	55.05	56.45	55.70		53.7633
Midway Sunset		51.40	53.40	55.90	54.60	55.85	55.05	56.45	55.70		53.7633
San Ardo		48.25	50.25	52.75	51.45	52.70	51.90	53.30	52.55		50.6133
Seal Beach		58.40	60.40	62.90	61.60	62.85	62.05	63.45	62.70		60.7450

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.