North America Crude Oil Marketing - September 2002 Summary California Bulletins 02-CA85 to 02-CA94, 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	CA85 09/03	CA86 09/04	CA87 09/05	CA88 09/06	CA89 09/12	CA90 09/13
Asphalto		25.70	25.95	26.70	27.20	26.70	27.70
Belridge Hvy (under 28�)		23.35	23.60	24.35	24.85	24.35	25.35
Belridge Lt (over 28�)		25.65	25.90	26.65	27.15	26.65	27.65
Buena Vista Hills		24.95	25.20	25.95	26.45	25.95	26.95
Cal Canal		26.45	26.70	27.45	27.95	27.45	28.45
Coalinga		23.65	23.90	24.65	25.15	24.65	25.65
Cymric		23.15	23.40	24.15	24.65	24.15	25.15
Huntington Beach		24.00	24.25	25.00	25.50	25.00	26.00
Kern River		23.25	23.50	24.25	24.75	24.25	25.25
Kettleman Hills		25.85	26.10	26.85	27.35	26.85	27.85
Lost Hills		25.60	25.85	26.60	27.10	26.60	27.60
McKittrick		23.25	23.50	24.25	24.75	24.25	25.25
Midway Sunset		23.25	23.50	24.25	24.75	24.25	25.25
Montebello		24.65	24.90	25.65	26.15	25.65	26.65
Pt Arguello (onshore)		19.90	20.15	20.90	21.40	20.90	21.90
Railroad Gap		25.65	25.90	26.65	27.15	26.65	27.65
San Ardo		21.90	22.15	22.90	23.40	22.90	23.90
Seal Beach		25.30	25.55	26.30	26.80	26.30	27.30

California	API	CA91 09/17	CA92 09/18	CA93 09/23	CA94 09/26		Mthly Avg
Asphalto		26.95	27.20	28.35	28.10		27.3817
Belridge Hvy (under 28�)		24.60	24.85	25.65	25.40		24.9383
Belridge Lt (over 28�)		26.90	27.15	28.25	28.00		27.3183
Buena Vista Hills		26.20	26.45	27.45	27.20		26.5917
Cal Canal		27.70	27.95	29.15	28.90		28.1450
Coalinga		24.90	25.15	25.95	25.70		25.2383
Cymric		24.40	24.65	25.35	25.10		24.7117
Huntington Beach		25.25	25.50	26.35	26.10		25.6017
Kern River		24.50	24.75	25.50	25.25		24.8250
Kettleman Hills		27.10	27.35	28.55	28.30		27.5450
Lost Hills		26.85	27.10	28.20	27.95		27.2683
McKittrick		24.50	24.75	25.50	25.25		24.8250
Midway Sunset		24.50	24.75	25.50	25.25		24.8250
Montebello		25.90	26.15	27.10	26.85		26.2783
Pt Arguello (onshore)		21.15	21.40	22.15	21.90		21.4750
Railroad Gap		26.90	27.15	28.25	28.00		27.3183
San Ardo		23.15	23.40	24.10	23.85		23.4617
Seal Beach		26.55	26.80	27.85	27.60		26.9550

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.