Post Date: November 10, 2000 
Category: MAINTENANCE 
Subcategory: NWP MONTHLY MAINTENANCE 
Subject: 01-158 December 2000 Monthly Maintenance 

Notice Text: 
All Shippers Letter # 01-158 
Date:?? 11/10/00 
Time:?? 15:30hrs 


TO:???? All Shippers 
Subject:??????? December 2000 Maintenance 

WILLIAMS GAS PIPELINE-WEST / Northwest Pipeline SCHEDULED MAINTENANCE 
as posted 11 - 10, 2000 

The following maintenance work is scheduled on Williams Gas Pipeline-West / 
Northwest 
Pipeline (WGP-W) during the month of December 2000.? The scheduled 
maintenance is 
Northwest's most recent projection of potential system impacts.? This 
schedule is provided to assist you in planning your business for the coming 
month. The impacts are estimates, which could change depending on other 
scheduling factors.? If any scheduled maintenance activities change, an 
updated notice will be posted to the EBB as soon as possible.

UPCOMING DECEMBER? SCHEDULED MAINTENANCE 

*** November 27, 2000 - December 15, 2000 

20" Camas - Eugene Pigging Project 

Due to permit issues imposed by the City of Gresham, anomaly repair work on 
the 20" Camas - Eugene line has been delayed from the original repair date of 
October 23 & October 31, 2000, until the week of November 27, 2000 through 
December 15, 2000.? It is not known at this time if any pipeline anomalies 
will require repair. The 20" Camas to Eugene is paralleled by a 30" / 20" 
loop line and no impacts are anticipated at this time.


*** November 10, 2000 - December 8, 2000 

Vernal Pigging Project 

WGP-W crews continue to excavate and repair anomalies between mainline valve 
2-7 
(M.P. 213) to mainline valve 2-10 (M.P. 263). Based on current data, it is 
not known how 
many pipeline anomalies will require repair.? Gas outages may be required 
during this period 
and will be communicated as quickly as the information becomes available. 

***Dates are estimates and are subject to change. 

WGP-W 
st