North America Crude Oil Marketing - October 2006 Summary East of the Rockies Bulletins 06-E192 to 06-E214, with Monthly Averages

Chevron has changed its posted prices as shown below: Effective 7:00 a.m. on the date(s) indicated, and subject to change without notice and subject to the terms and conditions of its division orders or other contracts, Chevron will pay the following prices ($/bbl) for oil at 40.0° API and above, except as noted below, delivered into pipelines for its account into the custody of its authorized carrier or receiving agent. The posted prices for crude oil transported by truck or barge will be the following prices less appropriate trucking or barge cost. The posted prices for crude oil received off shore will be the following prices less appropriate transportation and quality costs to get the crude on shore. Regarding technical issues of Chevron's most recent posted prices, call Christine Mathwig 832-854-5159. POSTINGS WILL BE DISCONTINUED AS OF 8/1/19

* Prices are subject to a Gravity Adjustment Scale

East of the Rockies	E192 10/01	E193 10/02	E194 10/03	E195 10/04	E196 10/05	E197 10/06	E198 10/09	E199 10/10	E200 10/11	E201 10/12	E202 10/13	E203 10/16	Gvty Adj*
Altamont Yellow Wax	56.91	55.03	52.68	53.41	54.03	46.86	47.06	45.62	44.69	44.96	45.67	47.04	B
Bonito Sour (Onshore)	58.00	56.00	53.75	54.50	55.00	54.75	55.00	53.50	52.50	52.75	53.50	55.00	A
Deepwater Sour (Onshore) (30�)	53.25	51.50	49.00	49.75	50.50	50.00	50.25	48.75	48.00	48.25	49.00	50.25	F,G
East Texas	59.25	57.50	55.00	55.75	56.50	56.25	56.50	55.00	54.00	54.25	55.00	56.25	none
Eugene Island Sour (Onshore)	57.50	55.50	53.25	54.00	54.50	54.25	54.50	53.00	52.00	52.50	53.00	54.50	A
Heavy Louisiana Sweet (Onshore)	61.25	59.50	57.00	57.75	58.50	58.25	58.25	57.00	56.00	56.25	57.00	58.25	A
Light Louisiana Sweet (Onshore)	61.75	59.75	57.50	58.25	58.75	58.50	58.75	57.25	56.50	56.75	57.50	58.75	A
New Mexico Intermediate	59.50	57.75	55.25	56.00	56.75	56.50	56.75	55.25	54.25	54.50	55.25	56.50	none
New Mexico Sour (34�)	54.75	53.00	50.50	51.25	52.00	51.75	52.00	50.50	49.50	49.75	50.50	51.75	none
North Texas Sweet	59.50	57.75	55.25	56.00	56.75	56.50	56.75	55.25	54.25	54.50	55.25	56.50	none
Oklahoma Sour	56.85	54.97	52.62	53.35	53.97	53.70	53.90	52.46	51.53	51.80	52.51	53.88	none
Oklahoma Sweet	61.71	59.83	57.48	58.21	58.83	58.56	58.76	57.32	56.39	56.66	57.37	58.74	none
South Texas Light Sweet	57.50	55.75	53.25	54.00	54.75	54.50	54.75	53.25	52.25	52.50	53.25	54.50	none
Southwest Wyoming Sweet	63.16	61.28	58.93	59.66	60.28	60.01	60.21	58.77	57.84	58.11	58.82	60.19	E
Uinta Basin Black Wax	52.36	50.48	48.13	48.86	49.48	46.86	47.06	45.62	44.69	44.96	45.67	47.04	B
West Texas Intermediate	59.50	57.75	55.25	56.00	56.75	56.50	56.75	55.25	54.25	54.50	55.25	56.50	none
West Texas Sour (34�)	54.75	53.00	50.50	51.25	52.00	51.75	52.00	50.50	49.50	49.75	50.50	51.75	none
Western Colorado	57.91	56.03	53.68	54.41	55.03	54.76	54.96	53.52	52.59	52.86	53.57	54.94	B

East of the Rockies	E204 10/17	E205 10/18	E206 10/19	E207 10/20	E208 10/23	E209 10/24	E210 10/25	E211 10/26	E212 10/27	E213 10/30	E214 10/31	Gvty Adj*	Mthly Avg
Altamont Yellow Wax	46.03	44.75	45.60	43.92	45.91	46.45	48.50	47.46	47.85	45.46	45.83		47.4297
Bonito Sour (Onshore)	54.00	52.50	53.50	51.75	53.75	54.25	56.25	55.25	55.75	53.25	53.75		54.1855
Deepwater Sour (Onshore) (30�)	49.25	48.00	48.75	47.25	49.25	49.75	51.75	50.75	51.00	48.75	49.00		49.5645
East Texas	55.25	54.00	55.00	53.25	55.25	55.75	57.75	56.75	57.25	54.75	55.25		55.6452
Eugene Island Sour (Onshore)	53.50	52.25	53.00	51.25	53.25	54.00	56.00	55.00	55.25	53.00	53.25		53.7339
Heavy Louisiana Sweet (Onshore)	57.25	56.00	57.00	55.25	57.25	57.75	59.75	58.75	59.25	56.75	57.00		57.6290
Light Louisiana Sweet (Onshore)	57.75	56.50	57.25	55.75	57.75	58.25	60.25	59.25	59.50	57.25	57.50		58.0484
New Mexico Intermediate	55.50	54.25	55.25	53.50	55.50	56.00	58.00	57.00	57.50	55.00	55.50		55.8952
New Mexico Sour (34�)	50.75	49.50	50.50	48.75	50.75	51.25	53.25	52.25	52.75	50.25	50.75		51.1452
North Texas Sweet	55.50	54.25	55.25	53.50	55.50	56.00	58.00	57.00	57.50	55.00	55.50		55.8952
Oklahoma Sour	52.87	51.59	52.44	50.76	52.75	53.29	55.34	54.30	54.69	52.30	52.67		53.1568
Oklahoma Sweet	57.73	56.45	57.30	55.62	57.61	58.15	60.20	59.16	59.55	57.16	57.53		58.0168
South Texas Light Sweet	53.50	52.25	53.25	51.50	53.50	54.00	56.00	55.00	55.50	53.00	53.50		53.8952
Southwest Wyoming Sweet	59.18	57.90	58.75	57.07	59.06	59.60	61.65	60.61	61.00	58.61	58.98		59.4668
Uinta Basin Black Wax	46.03	44.75	45.60	43.92	45.91	46.45	48.50	47.46	47.85	45.46	45.83		46.6958
West Texas Intermediate	55.50	54.25	55.25	53.50	55.50	56.00	58.00	57.00	57.50	55.00	55.50		55.8952
West Texas Sour (34�)	50.75	49.50	50.50	48.75	50.75	51.25	53.25	52.25	52.75	50.25	50.75		51.1452
Western Colorado	53.93	52.65	53.50	51.82	53.81	54.35	56.40	55.36	55.75	53.36	53.73		54.2168

Note: Prices in $/bbl

Measurement The prices are based upon computation of quantities by mutually acceptable automatic measuring equipment in accordance with provisions of API Standard 1101 or from 100% tank tables with corrections of volume and gravity for temperature to 60°F in accordance with ASTM D-1250 and supplements thereto, if any, and with deductions for full sediment, water and other impurities. Only merchantable oil acceptable to the receiving agency designated by Chevron and containing not more than 1% sediment and water will be accepted.