North America Crude Oil Marketing - April 2008 Summary California Bulletins 08-CA62 to 08-CA83, 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 04/02	CA64 04/03	CA65 04/04	CA66 04/07	CA67 04/08	CA68 04/09	CA69 04/10	CA70 04/11	CA71 04/14	CA72 04/15	CA73 04/16
Buena Vista Hills		95.05	98.90	97.90	100.30	103.15	102.55	104.95	104.20	104.25	105.85	107.90	109.00
Coalinga		89.60	93.45	92.45	94.85	97.70	97.10	99.50	98.75	98.80	100.40	102.45	103.55
Huntington Beach		91.20	95.05	94.05	96.45	99.30	98.70	101.10	100.35	100.40	102.00	104.05	105.15
Kettleman Hills		98.60	102.45	101.45	103.85	106.70	106.10	108.50	107.75	107.80	109.40	111.45	112.55
Lost Hills		96.80	100.65	99.65	102.05	104.90	104.30	106.70	105.95	106.00	107.60	109.65	110.75
McKittrick		88.85	92.70	91.70	94.10	96.95	96.35	98.75	98.00	98.05	99.65	101.70	102.80
Midway Sunset		88.85	92.70	91.70	94.10	96.95	96.35	98.75	98.00	98.05	99.65	101.70	102.80
Seal Beach		96.10	99.95	98.95	101.35	104.20	103.60	106.00	105.25	105.30	106.90	108.95	110.05

California	API	CA74 04/17	CA75 04/18	CA76 04/21	CA77 04/22	CA78 04/23	CA79 04/24	CA80 04/25	CA81 04/28	CA82 04/29	CA83 04/30		Mthly Avg
Buena Vista Hills		108.95	110.80	111.55	113.45	112.40	110.15	112.55	112.80	109.70	107.45		106.6533
Coalinga		103.50	105.35	106.10	108.00	106.95	104.70	107.10	107.35	104.25	102.00		101.2033
Huntington Beach		105.10	106.95	107.70	109.60	108.55	106.30	108.70	108.95	105.85	103.60		102.8033
Kettleman Hills		112.50	114.35	115.10	117.00	115.95	113.70	116.10	116.35	113.25	111.00		110.2033
Lost Hills		110.70	112.55	113.30	115.20	114.15	111.90	114.30	114.55	111.45	109.20		108.4033
McKittrick		102.75	104.60	105.35	107.25	106.20	103.95	106.35	106.60	103.50	101.25		100.4533
Midway Sunset		102.75	104.60	105.35	107.25	106.20	103.95	106.35	106.60	103.50	101.25		100.4533
Seal Beach		110.00	111.85	112.60	114.50	113.45	111.20	113.60	113.85	110.75	108.50		107.7033

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.