North America Crude Oil Marketing - February 2006 Summary California Bulletins 06-CA19 to 06-CA36, 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	CA19 02/01	CA20 02/02	CA21 02/03	CA22 02/06	CA23 02/07	CA24 02/08	CA25 02/10	CA26 02/13	CA27 02/14	CA28 02/15
Buena Vista Hills		59.90	57.95	58.65	58.40	56.40	55.80	55.05	54.45	52.75	50.75
Coalinga		55.40	53.45	54.15	53.90	51.90	51.30	50.55	49.95	48.25	46.25
Huntington Beach		56.65	54.70	55.40	55.15	53.15	52.55	51.80	51.20	49.50	47.50
Kettleman Hills		63.00	61.05	61.75	61.50	59.50	58.90	58.15	57.55	55.85	53.85
Lost Hills		61.65	59.70	60.40	60.15	58.15	57.55	56.80	56.20	54.50	52.50
McKittrick		54.70	52.75	53.45	53.20	51.20	50.60	49.85	49.25	47.55	45.55
Midway Sunset		54.70	52.75	53.45	53.20	51.20	50.60	49.85	49.25	47.55	45.55
Pt Arguello (onshore)		51.85	49.90	50.60	50.35	48.35	47.75	47.00	46.40	44.70	42.70
San Ardo		51.75	49.80	50.50	50.25	48.25	47.65	46.90	46.30	44.60	42.60
Seal Beach		60.80	58.85	59.55	59.30	57.30	56.70	55.95	55.35	53.65	51.65

California	API	CA29 02/16	CA30 02/17	CA31 02/21	CA32 02/22	CA33 02/23	CA34 02/24	CA35 02/27	CA36 02/28		Mthly Avg
Buena Vista Hills		51.50	52.95	54.05	52.45	52.00	55.05	53.35	53.95		54.9125
Coalinga		47.00	48.45	49.55	47.95	47.50	50.55	48.85	49.45		50.4125
Huntington Beach		48.25	49.70	50.80	49.20	48.75	51.80	50.10	50.70		51.6625
Kettleman Hills		54.60	56.05	57.15	55.55	55.10	58.15	56.45	57.05		58.0125
Lost Hills		53.25	54.70	55.80	54.20	53.75	56.80	55.10	55.70		56.6625
McKittrick		46.30	47.75	48.85	47.25	46.80	49.85	48.15	48.75		49.7125
Midway Sunset		46.30	47.75	48.85	47.25	46.80	49.85	48.15	48.75		49.7125
Pt Arguello (onshore)		43.45	44.90	46.00	44.40	43.95	47.00	45.30	45.90		46.8625
San Ardo		43.35	44.80	45.90	44.30	43.85	46.90	45.20	45.80		46.7625
Seal Beach		52.40	53.85	54.95	53.35	52.90	55.95	54.25	54.85		55.8125

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.