North America Crude Oil Marketing - December 1999 Summary East of the Rockies Bulletins 99-E211 to 99-E231, 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	E211 12/01	E212 12/02	E213 12/03	E214 12/06	E215 12/07	E216 12/08	E217 12/09	E218 12/10	E219 12/13	E220 12/14	E221 12/15	Gvty Adj*
Altamont Yellow Wax	25.00	25.75	25.75	26.75	26.25	26.50	26.25	25.25	25.50	25.75	26.25	B
Deepwater Sour (Onshore) (30�)	22.75	23.50	23.50	24.50	23.75	24.00	23.50	22.75	22.75	22.50	22.75	F,G
East Texas	24.00	24.75	24.75	25.75	25.25	25.50	25.25	24.25	24.50	24.75	25.25	FLAT
New Mexico Intermediate	24.25	25.00	25.00	26.00	25.50	25.75	25.50	24.50	24.75	25.00	25.50	C
New Mexico Sour (34�)	23.00	24.00	24.00	25.00	24.25	24.25	24.25	23.25	23.50	23.75	24.25	D
North Texas Sweet	24.25	25.00	25.00	26.00	25.50	25.75	25.50	24.50	24.75	25.00	25.50	C
Oklahoma Sour	23.00	24.00	24.00	25.00	24.25	24.25	24.25	23.25	23.50	23.75	24.25	B
Oklahoma Sweet	24.25	25.00	25.00	26.00	25.50	25.75	25.50	24.50	24.75	25.00	25.50	A
South Louisiana Sour (Onshore)	24.25	25.00	25.25	26.25	25.50	25.75	25.25	24.25	24.25	24.75	25.25	A
South Louisiana Sweet (Onshore)	25.00	25.75	26.00	26.75	26.25	26.50	26.00	25.00	25.00	25.50	26.00	A
South Texas Light Sweet	23.75	24.50	24.50	25.50	25.00	25.25	25.00	24.00	24.25	24.50	25.00	C
Southwest Wyoming Sweet	25.75	26.50	26.50	27.50	27.00	27.25	27.00	26.00	26.25	26.50	27.00	E
Texas Gulf Coast (Onshore)	24.00	24.75	24.75	25.75	25.25	25.50	25.25	24.25	24.50	24.75	25.25	C
Uinta Basin Black Wax	21.75	22.50	22.50	23.50	23.00	23.25	23.00	22.00	22.25	22.50	23.00	B
West Texas Intermediate	24.25	25.00	25.00	26.00	25.50	25.75	25.50	24.50	24.75	25.00	25.50	C
West Texas Sour (34�)	23.00	24.00	24.00	25.00	24.25	24.25	24.25	23.25	23.50	23.75	24.25	D
Western Colorado	25.25	26.00	26.00	27.00	26.50	26.75	26.50	25.50	25.75	26.00	26.50	B

East of the Rockies	E222 12/16	E223 12/17	E224 12/20	E225 12/21	E226 12/22	E227 12/23	E228 12/27	E229 12/28	E230 12/29	E231 12/30	Gvty Adj*	Mthly Avg
Altamont Yellow Wax	26.75	26.75	26.50	26.25	25.50	25.75	26.25	26.75	26.50	25.50		25.9919
Deepwater Sour (Onshore) (30�)	23.25	23.00	22.75	22.50	21.75	22.00	23.00	23.50	22.75	22.00		22.8790
East Texas	25.75	25.75	25.50	25.25	24.50	24.75	25.25	25.75	25.50	24.50		24.9919
New Mexico Intermediate	26.00	26.00	25.75	25.50	24.75	25.00	25.50	26.00	25.75	24.75		25.2419
New Mexico Sour (34�)	24.75	24.75	24.50	24.25	23.75	24.00	24.00	24.50	24.25	23.25		24.0242
North Texas Sweet	26.00	26.00	25.75	25.50	24.75	25.00	25.50	26.00	25.75	24.75		25.2419
Oklahoma Sour	24.75	24.75	24.50	24.25	23.75	24.00	24.00	24.50	24.25	23.25		24.0242
Oklahoma Sweet	26.00	26.00	25.75	25.50	24.75	25.00	25.50	26.00	25.75	24.75		25.2419
South Louisiana Sour (Onshore)	25.75	25.75	25.25	25.00	24.50	24.75	25.25	25.50	25.00	24.25		25.0242
South Louisiana Sweet (Onshore)	26.50	26.25	26.00	25.75	25.25	25.50	26.00	26.25	25.75	25.00		25.7419
South Texas Light Sweet	25.50	25.50	25.25	25.00	24.25	24.50	25.00	25.50	25.25	24.25		24.7419
Southwest Wyoming Sweet	27.50	27.50	27.25	27.00	26.25	26.50	27.00	27.50	27.25	26.25		26.7419
Texas Gulf Coast (Onshore)	25.75	25.75	25.50	25.25	24.50	24.75	25.25	25.75	25.50	24.50		24.9919
Uinta Basin Black Wax	23.50	23.50	23.25	23.00	22.25	22.50	23.00	23.50	23.25	22.25		22.7419
West Texas Intermediate	26.00	26.00	25.75	25.50	24.75	25.00	25.50	26.00	25.75	24.75		25.2419
West Texas Sour (34�)	24.75	24.75	24.50	24.25	23.75	24.00	24.00	24.50	24.25	23.25		24.0242
Western Colorado	27.00	27.00	26.75	26.50	25.75	26.00	26.50	27.00	26.75	25.75		26.2419

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.