Chevron Crude Oil Marketing - North America - May 2006 East of the Rockies Summary

North America Crude Oil Marketing - May 2006 Summary East of the Rockies Bulletins 06-E85 to 06-E106, 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	E85 05/01	E86 05/02	E87 05/03	E88 05/04	E89 05/05	E90 05/08	E91 05/09	E92 05/10	E93 05/11	E94 05/12	E95 05/15	E96 05/16	Gvty Adj*
Altamont Yellow Wax	71.20	72.11	69.78	67.44	67.69	67.27	68.19	69.63	70.82	69.54	66.91	67.03	B
Bonito Sour (Onshore)	69.50	70.50	68.25	65.75	66.00	65.75	66.50	68.00	69.25	68.00	65.25	65.50	A
Deepwater Sour (Onshore) (30ï¿½)	65.50	66.50	64.00	61.75	62.00	61.50	62.50	64.00	65.00	63.75	61.25	61.25	F,G
East Texas	70.00	71.00	68.75	66.25	66.50	66.25	67.00	68.50	69.75	68.50	65.75	66.00	none
Eugene Island Sour (Onshore)	69.25	70.25	68.00	65.50	65.75	65.50	66.25	67.75	69.00	67.75	65.00	65.25	A
Heavy Louisiana Sweet (Onshore)	72.75	73.50	71.25	69.00	69.25	68.75	69.75	71.00	72.25	71.00	68.25	68.50	A
Light Louisiana Sweet (Onshore)	73.50	74.50	72.25	69.75	70.00	69.50	70.50	72.00	73.25	72.00	69.25	69.50	A
New Mexico Intermediate	70.25	71.25	69.00	66.50	66.75	66.50	67.25	68.75	70.00	68.75	66.00	66.25	none
New Mexico Sour (34ï¿½)	65.50	66.50	64.25	61.75	62.00	61.75	62.50	64.00	65.25	64.00	61.25	61.50	none
North Texas Sweet	70.25	71.25	69.00	66.50	66.75	66.50	67.25	68.75	70.00	68.75	66.00	66.25	none
Oklahoma Sour	68.22	69.13	66.80	64.46	64.71	64.29	65.21	66.65	67.84	66.56	63.93	64.05	none
Oklahoma Sweet	71.89	72.80	70.47	68.13	68.38	67.96	68.88	70.32	71.51	70.23	67.60	67.72	none
South Texas Light Sweet	68.25	69.25	67.00	64.50	64.75	64.50	65.25	66.75	68.00	66.75	64.00	64.25	none
Southwest Wyoming Sweet	74.45	75.36	73.03	70.69	70.94	70.52	71.44	72.88	74.07	72.79	70.16	70.28	E
Uinta Basin Black Wax	64.70	65.61	63.28	60.94	61.19	60.77	61.69	63.13	64.32	63.04	60.41	60.53	B
West Texas Intermediate	70.25	71.25	69.00	66.50	66.75	66.50	67.25	68.75	70.00	68.75	66.00	66.25	none
West Texas Sour (34ï¿½)	65.50	66.50	64.25	61.75	62.00	61.75	62.50	64.00	65.25	64.00	61.25	61.50	none
Western Colorado	68.70	69.61	67.28	64.94	65.19	64.77	65.69	67.13	68.32	67.04	64.41	64.53	B

East of the Rockies	E97 05/17	E98 05/18	E99 05/19	E100 05/22	E101 05/23	E102 05/24	E103 05/25	E104 05/26	E105 05/30	E106 05/31	Mthly Avg
Altamont Yellow Wax	66.19	66.95	66.03	66.73	69.26	67.36	68.82	68.87	69.53	68.79	68.3635
Bonito Sour (Onshore)	64.50	65.25	64.50	65.00	67.75	65.75	67.25	67.25	68.00	67.25	66.7581
Deepwater Sour (Onshore) (30ï¿½)	60.50	61.25	60.25	61.00	63.50	61.75	63.00	63.25	63.75	63.00	62.6452
East Texas	65.00	65.75	65.00	65.75	68.25	66.25	67.75	67.75	68.50	67.75	67.2661
Eugene Island Sour (Onshore)	64.25	65.00	64.25	64.75	67.25	65.50	67.00	67.00	67.75	67.00	66.5000
Heavy Louisiana Sweet (Onshore)	67.75	68.50	67.50	68.25	70.75	68.75	70.25	70.25	71.00	70.25	69.8306
Light Louisiana Sweet (Onshore)	68.50	69.25	68.50	69.00	71.50	69.75	71.25	71.25	72.00	71.25	70.7419
New Mexico Intermediate	65.25	66.00	65.25	66.00	68.50	66.50	68.00	68.00	68.75	68.00	67.5161
New Mexico Sour (34ï¿½)	60.50	61.25	60.50	61.25	63.75	61.75	63.25	63.25	64.00	63.25	62.7661
North Texas Sweet	65.25	66.00	65.25	66.00	68.50	66.50	68.00	68.00	68.75	68.00	67.5161
Oklahoma Sour	63.21	63.97	63.05	63.75	66.28	64.38	65.84	65.89	66.55	65.81	65.3835
Oklahoma Sweet	66.88	67.64	66.72	67.42	69.95	68.05	69.51	69.56	70.22	69.48	69.0535
South Texas Light Sweet	63.25	64.00	63.25	64.00	66.50	64.50	66.00	66.00	66.75	66.00	65.5161
Southwest Wyoming Sweet	69.44	70.20	69.28	69.98	72.51	70.61	72.07	72.12	72.78	72.04	71.6135
Uinta Basin Black Wax	59.69	60.45	59.53	60.23	62.76	60.86	62.32	62.37	63.03	62.29	61.8635
West Texas Intermediate	65.25	66.00	65.25	66.00	68.50	66.50	68.00	68.00	68.75	68.00	67.5161
West Texas Sour (34ï¿½)	60.50	61.25	60.50	61.25	63.75	61.75	63.25	63.25	64.00	63.25	62.7661
Western Colorado	63.69	64.45	63.53	64.23	66.76	64.86	66.32	66.37	67.03	66.29	65.8635

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.