Service Agreement (100308), dated January 12, 1994



 Exhibit 10j.(15) 
 Rate Schedule TP-2 Service Agreement 
 Contract: No. 100308 
 THIS SERVICE AGREEMENT (Agreement) by and between Northwest Pipeline GP (Transporter) and Northwest Natural Gas Company, Inc. (Shipper) restates the Service Agreement
made and entered into on January 12, 1994. 
 Whereas: 
 A
Pursuant to Section 11.4 of the General Terms and Conditions of Transporter’s FERC Gas Tariff, Transporter and Shipper desire to restate the Service Agreement dated January 12, 1994 (Contract 100308) in the format of Northwest’s
currently effective Form of Service Agreement and to make certain additional non-substantive changes, while preserving all pre-existing, substantive contractual rights. 
 B. The storage redelivery service hereunder is related to that certain Rate Schedule SGS-2F service agreement (100502), dated January 1, 1998. 
 C. Significant events and previous amendments of Contract 100308 reflected in the contract restatement include: 
 1. Shipper originally entered into Contract #100308 pursuant to the provisions of the approved Joint Offer of Settlement in Docket No. RP93-5-011 which unbundled the storage and redelivery transportation services, effective April 1,
1994. 
 2. By Amendment dated May 1, 1999, Shipper’s Contract Demand, Annual Contract Quantity and Monthly Billing Quantity were
increased subordinating 9,586 Dths of primary rights south of the Jackson prairie Receipt Point to reflect Shipper’s request of additional storage redelivery transportation capacity related to a portion of its storage rights under SGS-2F
Storage Service Agreement {#100502) dated January 1, 1998. 
 Therefore, in consideration of the premises and mutual covenants set: forth herein,
Transporter and Shipper agree as follows: 
 1. Tariff Incorporation Rate Schedule TF-2 and the General Terms and Conditions (GT&C) that apply to Rate
Schedule TF-2, as such may be revised from time to time in Transporter’s FERC Gas Tariff (Tariff), are incorporated by reference as part of this Agreement, except to the extent that any provisions thereof may ne modified by nonconforming
provisions herein. 
 2. Transportation Service. Subject to the terms and conditions that apply to service under this Agreement, Transporter agrees to
receive, transport and deliver natural gas for Shipper, on a firm basis. The Transportation Contract Demand, the Annual Contract Quantity, the maximum Daily Quantity at the Primary Receipt Point, and the Maximum Daily Delivery Obligation at each
Primary Delivery Point are set forth on Exhibit A. 
 3. Transportation Rates. Shipper agrees to pay Transporter for all services rendered under this
Agreement at the rates set forth or referenced herein. The Monthly Billing Quantity for reservation charges is set forth on Exhibit A. The maximum currently effective rates (Recourse rates) for Rate Schedule TF-2 set forth in the Statement of Rates
in the Tariff, as revised from time to time, will apply to service hereunder unless and to the extent that discounted Recourse Rates or awarded capacity release rates apply as set forth on Exhibit A or negotiated rates apply as set forth on Exhibit
D. Additionally, if applicable under Section 21 of the GT&C, Shipper agrees to pay Transporter a facility reimbursement charge as set forth on Exhibit C. 
 4. Transportation Term. This Agreement becomes effective on the date first set forth above. The primary term begin date for the transportation service hereunder is set forth on Exhibit A. This Agreement will remain in full force and effect
through the primary term end date set forth on Exhibit A and, if Exhibit A indicates that an evergreen provision applies, through the established evergreen rollover periods thereafter until terminated in accordance with the notice requirements under
the applicable evergreen provision. 
 5. Non-Confirming Provisions. All aspects in which this Agreement deviates from the Tariff, if any, are set forth as
non-conforming provisions on Exhibit B. If Exhibit B includes any material non-conforming provisions, Transporter will file the Agreement with the Federal Energy Regulatory Commission (Commission) and the effectiveness of such non-conforming
provisions will be subject to the Commission acceptance of Transporter’s filing of the nonconforming Agreement. 
 6. Capacity Release. If Shipper is a
temporary capacity release Replacement Shipper, any capacity release conditions, including recall rights, are set forth on Exhibit A. 
 7. Exhibit
incorporation. Exhibit A is attached hereto and incorporated as part of this Agreement. If Exhibit B, C and/or D apply, as noted on Exhibit A to this Agreement, then such Exhibits also are attached hereto and incorporated as part of this Agreement.








 8. Regulatory Authorization. Transportation service under this Agreement is authorized pursuant to the Commission
regulations set forth on Exhibit A. 
 9. Superseded Agreements. When this Agreement takes effect, it supersedes, cancels and terminates the following
agreement(s): Original Firm Redelivery Transportation Contract dated January 12, 1994 as amended, including Amendment dated May 1, 1999. 
 IN
WITNESS WHEREOF, Transporter and Shipper have executed this on January 21, 2008. 
  

									
	Northwest Natural Gas Company	 		 	Northwest Pipeline GP
					
	By:	 	  
	 		 	By:	 	  

	Name:	 	  
	 		 	Name:	 	  

	Title:	 	  
	 		 	Title:	 	  









 EXHIBIT A 
 (Dated, January 21, 2008, Effective January 21, 2008) 
 To the 
 Rate Schedule TF-2 Service Agreement 
 (Contract
No. 100308) 
 between Northwest Pipeline GP and Northwest Natural Gas Company 
 SERVICE DETAILS 
 1. Transportation Contract Demand: 32,624 Dth per day 
 2. Annual Contract Quantity: 835,046 Dth 
 3. Monthly Billing Quantity:
2,299 Dth 
 4. Primary Receipt Point : 
  

			
	 Point ID Name
	  	Maximum Daily Quantities (Dth)
	 235 Jackson Prairie receipt
	  	32,624
		  	 
	 Total
	  	32,624

 5. Primary Delivery Points 
  

					
	 Point ID Name
	  	 Maximum Daily Delivery Obligation (Dth)
	  	 Delivery Pressure (psig)

	 217 Camas
	  	2000	  	300
	 219 Battleground
	  	10	  	250
	 301 Washougal
	  	500	  	300
	 303 Portland Northeast
	  	8000	  	400
	 307 Portland Southeast
	  	5000	  	400
	 312 Molalla
	  	100	  	400
	 313 Monitor
	  	10	  	150
	 315 McMinnville Amity
	  	920	  	400
	 319 Salem
	  	921	  	400
	 322 Marion
	  	20	  	150
	 324 Jefferson/Scio
	  	150	  	400
	 327 Albany
	  	2071	  	400
	 332 Coburg
	  	100	  	400
	 334 North Eugene
	  	920	  	400
	 336 South Eugene
	  	576	  	400
	 339 Creswell
	  	100	  	150
	 342 Cottage Grove
	  	300	  	400
	 447 White Salmon/bingen
	  	300	  	225
	 448 Hood River
	  	1100	  	225
	 467 Portland West/Scappoose
	  	7536	  	400
	 470 Deer Island
	  	8000	  	510
	 474 The Dalles
	  	1500	  	150
	 TOTAL
	  	40,134	  	

 6. Recourse of Discounted Recourse Transportation Rates: 
 a. Reservation charge (per Dth of Monthly Billing Quantity): 
 Maximum Base Tariff Rate 
 b. Volumetric Charge (per Dth): 
 Maximum Base Tariff Rate 
 c. Rate Discount
Condition Consistent with Section 3.3 of Rate Schedule TF-2: 
 Not Applicable 
 7. Transportation Term: 
 a. Primary Term Begin Date:
April 1, 1994 
 b. Primary Term End Date: October 31, 2004 
 c. Evergreen Provision: Yes, grandfathered unilateral evergreen under Section 14.3 of Rate Schedule TF-2 
 8. Regulatory Authorization: 18 CFR 284.223 
 9. Additional Exhibits:

 Exhibit B – Yes, dated January 21, 2008 
 Exhibit C – No 
 Exhibit D – No 







 EXHIBIT B 
 (Dated January 21, 2008, Effective January 21, 2008) 
 to the 
 Rate Schedule TF -2 Service Agreement 
 (Contract No. 100308) 
 Between Northwest Pipeline GP 
 And Northwest Natural Gas Company 
 NON-CONFORMING PROVISIONS 
 The following provision, as reflected in the May 1, 1999 amendment to contract 100308, was accepted as non-conforming by the Commission on December 3,
1999 in Docket No. GT00-07; 
 Contract 100308 was modified to condition 9,586 Dths of Shipper’s primary rights through any constraint point south of
the Jackson Prairie Receipt Point on Exhibit A to have a scheduling subordinate to the scheduling priority for any firm shipper with unconditional primary corridor rights through such constraint.