Document:

Amendment and Restatement of Firm Transportation Service Agreement

 Exhibit 10j.(19) 
 Terasen 
 Gas 
 TARIFF SUPPLEMENT NO. 1-6 
 AMENDMENT AND RESTATEMENT OF 
 FIRM TRANSPORTATION SERVICE AGREEMENT 
 BETWEEN NORTHWEST NATURAL GAS COMPANY 
 AND TERASEN GAS INC. 
 (Formerly Be Gas Utility Ltd.) 
 Effective November 1, 2004

 THIS AMENDMENT AND RESTATEMENT OF FIRM TRANSPORTATION SERVICE 
 AGREEMENT is dated              with effect as of and from November 1, 2004. 

BETWEEN: 
 TERASEN GAS INC., formerly BC Gas Utility Ltd.,
a company incorporated under the laws of British Columbia having its registered office at 1111 West Georgia Street, Vancouver, British Columbia, Canada 
 (hereinafter called “Terasen Gas”) 
 OF THE FIRST PART 
 AND: 
 NORTHWEST NATURAL GAS COMPANY. (“NW
Natural”), a company incorporated under the laws of the State of Oregon having its registered office at 220 NW Second Avenue, Portland, Oregon, U.SA 
 (hereinafter called “Shipper”) 
 OF THE SECOND PART 
 WHEREAS: 
 A. Terasen Gas owns and operates the Southern Crossing Pipeline
and other transmission assets from the Interconnection with the TransCanada Pipelines Limited -British Columbia System located at Yahk, British Columbia to the interconnection with Duke Energy Gas Transmission Inc. near Kingsvale, British Columbia
and contracts with Duke for capacity from Kingsvale to Huntingdon, British Columbia. 
 B. Terasen Gas will use the capacity on its system and the contracted
capacity on the Duke System to provide the Shipper with the firm transportation service from Yahk to Huntingdon. 
 C. Terasen Gas holds capacity on both the
British Columbia and Alberta systems of TransCanada Pipelines Limited and will permanently assign to Shipper the capacity which is required to match the capacity contracted under this Agreement. 
 D. The Parties have entered into a Firm Transportation Service Agreement dated January 13, 2003 with effect as of and from November 1, 2004 filed as Tariff
Supplement No. 1-6 with the BCUC and have agreed to enter into this Amendment and Restatement of the Firm Transportation Service Agreement effective November 1, 2004, subject to the approval of the BCUC. 

 NOW THEREFORE THIS AGREEMENT WITNESSES THAT in consideration of the terms, conditions and limitations contained herein,
the Parties agree as follows: 
 ARTICLE 1 
 DEFINITIONS

 1.1 Except where the context requires otherwise the following terms and abbreviations, when used in this Agreement, have the meanings set out below:

 (a) “Affiliate”, when used to indicated a relationship with a Party or Person, means another Person that directly, or indirectly
through one or more intermediates or otherwise, controls, or is controlled by, or is under common control with such Party or Person. A corporation shall be deemed to be an Affiliate of another corporation if one of them is directly or indirectly
controlled by the other or if each of them is directly or indirectly controlled by the same Party or Person. 
 (b) “Agreement”
means this Amendment and Restatement of the Firm Transportation Service Agreement effective as of and from November 1, 2004, together with any exhibits attached hereto, as amended, supplemented or restated from time to time. 
 (c) “Authorized Quantity” means the Nomination pursuant to Section 6.2 or the Intra-Day Nomination pursuant to Section 6.3 as either
may be adjusted in accordance with Section 7.5. 
 (d) “BCUC” means the British Columbia Utilities Commission, or its
successor. 
 (e) “Business Day” means any day except Saturday, Sunday and any Federal banking or statutory holidays
observed in the State of Oregon or the Province of British Columbia or Alberta. 
 (f) “Commencement Date” means the date defined in
Section 3.1. 
 (g) “Contract Capacity” means the maximum volume of pipeline capacity defined in Section 2.1 (b) that
on each Day Terasen Gas is obligated to make available to Shipper under this Agreement and for which Shipper has agreed to pay Demand Charges specified in Exhibit A attached hereto and in accordance with the terms of this Agreement. 
 (h) “Contract Term” has the meaning given that term in Section 3.2. 
 (i) “Contract Year” means a twelve Month period, beginning on any November 1”, which falls within the Contract Term. 

 (j) “Cubic Metre” means that quantity of gas, which at a temperature of fifteen degrees
(15”) Celsius and at an absolute pressure of kilopascals 101.325 kPa occupies one cubic metre. 
 (k) “Day” means a period
of 24 consecutive hours, beginning and ending at 9:00 a.m. Central Standard Time or such other lime as may be determined by the Duke General Terms and Conditions. 
 (I) ‘Dth” means dekatherm which is equal to 1,000,000 Btu. 
 (m) “Delivery Point” means
the point at which Terasen Gas delivers Shipper’s gas to Shipper or for Shipper’s account, which point is the Huntingdon Delivery Area on the Duke pipeline system. 
 (n) “Demand Charge” has the meaning given that term in Section 4.2 and as further described in Exhibit A. 
 (o) “Duke” means Duke Energy Gas Transmission Inc., its successors or assigns, or the natural gas pipeline system of Duke Energy Gas
Transmission Inc., BC Pipeline and Field Services Division, as the subject matter or context requires. 
 (p) “Duke General Terms and
Conditions” means the General Terms and Conditions of Duke approved by the NEB from time to time. 
 (q) “Export Delivery
Area” means those points on the international boundary between Canada and the United States, where the Duke transmission pipeline interconnects with pipeline facilities located in the United States of America as defined in the Duke General
Terms and Conditions as the “Export Delivery Area” as may be amended from time to time.  
 (r) “Fuel” has
the meaning given that term in Section 5.1. 
 (s) “GJ” means gigajoule which is equal to one billion
(1,000,000,000) Joules. 
 (t) “Gross Heating Value” means the number of megajoules obtainable from the combustion, at constant
pressure, of one Cubic Metre of gas at a temperature of 15 degrees Celsius, free of all water vapour, and at an absolute pressure of 101.325 kPa, with the products of combustion cooled to the initial temperature of the gas and all water formed by
the combustion reaction condensed to the liqUid state. 
 (u) “Huntingdon Delivery Area” means the area comprising of the Lower
Mainland Delivery Area and Export Delivery Area. 

 (v) “Imbalance” means the difference, in GJs, between the quantity of natural gas received by
Terasen Gas to the Shipper’s account at the Receipt Point, net of Fuel, and the quantity of natural gas delivered by Terasen Gas to the Shipper’s account at the Delivery Point. 
 (w) “Intra-Day Nomination” means a nomination for a particular Day that is submitted after the Nomination deadline specified in
Section 6.1. 
 (x) “Joule” means the work done when the point of application of forces of one Newton is displaced at a
distance of one metre in the direction of the force. 
 (y) “kPa” kilopascals of pressure gauge. 
 (z) “Kingsgate Daily Absolute High” means the PG&E-GTNW Kingsgate Daily Absolute High Price as set out in Gas Daily’s Daily Price
Survey of gas delivered to PG&E Gas Transmission, Northwest Corporation at Kingsgate, converted to Canadian dollars using the noon exchange rate as quoted by the Bank of Canada one Business Day prior to gas flow date for each Day. Energy units
are converted from Dth to GJ by application of a conversion factor equal to 1.055056 GJ per Dth. 
 (aa) “Kingsvale” means the point
near Kingsvale, British Columbia, Where the transmission facilities of Terasen Gas interconnect with the transmission facilities of Duke. 
 (bb) “Lower Mainland Delivery Area” means the Terasen Gas -Lower Mainland Division delivery area as defined in the Duke General Terms and Conditions as may be amended from time to time. 
 (cc) “Month” means a period extending from the beginning of the first Day in a calendar month to the beginning of the first Day in the next
succeeding calendar month or such other period as agreed upon by the Shipper and Terasen Gas. 
 (dd) “NEB” means National
Energy Board or its successor. 
 (ee) “Nominate” or “Nomination” means Shipper’s notice to Terasen Gas, or its
designated agent, respecting the quantities of gas which Shipper wishes Terasen Gas to deliver to Shipper or for its account at the Delivery Point for the Day, as further described in Section 6.1. 
 (ff) “Party” means a party to this Agreement and “Parties’ means both of them. 
 (gg) “Person” means any party except the Parties to this Agreement. 
 (hh) “Receipt Point” means the points at which Terasen Gas receives gas from Shipper. For the purposes of this Agreement, the Receipt Point will
be at or near the point of Interconnection of the Terasen Gas system with TCPL’s pipeline system at Yahk. The Receipt Point may also be Kingsvale subject to any restrictions imposed by Duke. 

 (ii) “Service Interruption” has the meaning given that term in Section 13.1. 

(jj) “Sumas Daily Absolute High” means the Northwest Sumas Daily Absolute High Price as set out in Gas Daily’s Daily Price Survey for
gas delivered to Northwest Pipeline Corporation at Sumas, converted to Canadian dollars using the noon exchange rate as quoted by the Bank of Canada one Business Day prior to gas flow date for each Day. Energy units are converted from Dth to GJ by
application of a conversion factor equal to 1.055056 GJ per Dth. 
 (kk) “TCPL” means TransCanada Pipelines Limited -British
Columbia System, its successors and assigns. 
 (ll) “Terasen Gas” means Terasen Gas Inc. 
 (mm) “Terasen Gas Market’ means the design day demand, as it varies from time to time, of the firm natural gas sales and transport customers
along the Southern Crossing Pipeline route and north of Oliver, British Columbia served by Terasen Gas. 
 (nn) “Yahk” means Yahk.
British Columbia, or jf the context requires, means the East Kootenay Exchange near Yahk, British Columbia, where the existing transmission facilities of Terasen Gas interconnect with the transmission facilities of TCPL. 
 (oo) “103m3 means 1,000 Cubic Metres of gas as determined on the measurement basis set forth in Article 12. 
 1.2 Included Words: In this Agreement words importing the singular shall include the plural, and vice versa, and words importing the masculine gender shall include the
feminine gender, and vice versa. and words importing persons shall include firms and corporations, and vice versa. 
 1.3 Headings and Divisions: The
division of this Agreement into articles and sections, the provision of an index and the insertion of headings are for convenience of reference only and shall not affect the construction or interpretation of the Agreement. 
 ARTICLE 2 
 SERVICES 
 2.1 Nature of Service: Subject to the provisions of this Agreement, Terasen Gas shall provide to Shipper non-recallable daily firm natural gas transportation service
(“Firm Service”) during the term of this Agreement consisting of: 
 (a) Receipt, at the Receipt Point, of the Authorized Quantity
plus Fuel and adjusted for any Imbalance Nominations; and 

 (b) Delivery to Shipper, or toJlnippers account,
at the Delivery Point of a quantity of gas which shall not exceed that quantity of gas which is thermally equivalent to a maximum volume of 1,317 103m3 per Day (the ·Contract Capacity”). 
 Firm Service hereunder shall not be subject to curtailment or interruption except as provided in Article 14, or for scheduled maintenance, repair or modification of the facilities of Terasen Gas and Duke. 

2.2 Shipper’s Obligations: On any Day, Shipper shall Nominate for Firm Service a quantity of gas not to exceed the thermal equivalent of the Contract
Capacity, and Shipper shall deliver to Terasen Gas at the Receipt Point a quantity of gas equal to the Authorized Quantity plus Fuel. On the same Day, Shipper shall receive a quantity of gas which is thermally equivalent to the Authorized Quantity
at the Delivery Point. Shipper shall make all necessary arrangements with transporters upstream of the Receipt Point and downstream of the Delivery Point for such purposes. Any failure of the Shipper to comply with this provision shall not affect
the Shippers obligations to make any payments hereunder. 
 ARTICLE 3 
 TERM OF SERVICE 
 3.1 Commencement Date: Firm Service under this Agreement will commence on November 1,
2004 (the “Commencement Date”). 
 3.2 Contract Term: This Agreement shall be effective from the date hereof and shall continue in force
until sixteen (16) years after the Commencement Date (the “Contract Term”), ending October 31, 2020 subject to such extension as may be required in accordance with the provisions of Section 6.6 of this Agreement. 

3.3 Early Termination 
 (a) A Party may
terminate this Agreement if at any time the BCUC or the NEB sets rates or terms of service which differ from those set forth in this Agreement and which are materially adverse to that Party; provided that the Party adversely affected may not
terminate this Agreement if the other Party agrees to compensate the adversely affected Party to the extent of that adverse effect. The Party terminating this Agreement must give ninety (90) Days’ prior notice in writing to the other Party
and the termination will take effect at the end of the Day on the October 31 following expiry of the ninety (90) Day notice period. 
 (b) If the Shipper fails to pay the full amount outstanding in respect of any monthly statement for a period of thirty (3D) Days after suspension of receipt and delivery of gas by Terasen Gas pursuant to Section 9.5,
Terasen Gas may, in addition to any other remedy it may have, terminate this Agreement effective on the date of written notice by the Terasen Gas to the Shipper of such termination. 

 Terasen Gas Tariff 
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 (c) If the Shipper 
 (i) makes an assignment or any general arrangement for the benefit of its creditors; 
 (ii) files a petition or otherwise commences, authorizes or acquiesces in the commencement of a proceeding or cause under any bankruptcy or similar law
for the protection of creditors or has such petition filed against it and such proceeding remains undismissed for 30 Days; 
 (iii) otherwise
becomes bankrupt or insolvent (however evidenced); or 
 (iv) is unable to pay its debts as they fall due; 
 Terasen Gas may terminate this Agreement forthwith without notice. 
 (d) Notwithstanding any other provision in this Agreement, if any U.S. federal or state or Canadian federal or provincial law, rule, order, opinion, enactment or regulation of any governmental authority having
jurisdiction over Shipper, or any court renders all or substantially all of this Agreement illegal or unenforceable, then Shipper shall have the right to terminate this Agreement upon ninety (90) Days written notice to Terasen Gas. Shipper may
not terminate this Agreement if the Parties mutually agree to amend this Agreement to conform with such law, rule, order, opinion, enactment or regulation provided that such amendment shall be in writing and signed by both Parties. 
 3.4 Effect of Termination: Upon termination of this Agreement, this Agreement shall cease to have any force or effect, save as to the provisions of Section 19.5 and
any unsatisfied obligations or liabilities of either Party arising prior to the date of such termination, or arising thereafter as a result of such termination. 
 ARTICLE 4 
 DELIVERY CHARGES 
 4.1 General: From the
Commencement Date, Shipper shall pay to Terasen Gas each Month the amounts described below plus any and all taxes and/or surcharges of any nature payable by or on behalf of Terasen Gas with respect to the natural gas transported under this
Agreement. 
 4.2 Demand Charge: The Demand Charges for Contract Capacity shall be determined as provided for in Exhibit A to this Agreement. 

 4.3 Commodity Charges: In addition to the Demand Charge, Shipper shall pay commodity charges (“Commodity
Charges”) consisting of: 
 (a) Amounts for tax on fuel gas consumed in operations payable by Terasen Gas under the Motor Fuel Tax Act
(British Columbia), or its successor legislation, allocated to the Shipper for the Month related to the transportation of gas for the Shipper under this Agreement, plus 
 (b) Any directly incurred Duke commodity tolls from Kingsvale to Huntingdon, including any motor fuel taxes, surcharges and/or adjustments thereof,
related to the firm transportation of gas for the Shipper under this Agreement. 
 ARTICLE 5 
 5.1 Nomination of Fuel: In addition to the gas that Shipper desires to be delivered for the Shipper’s account at the Delivery Point, the Shipper shall nominate for and tender or cause to be tendered to Terasen
Gas at the Receipt Point, a quantity of gas based upon an applicable monthly fuel percentage. The fuel percentage shall be established by Terasen Gas, and calculated by dividing Terasen Gas’ reasonable estimate of compressor fuel, line losses
and unaccounted for gas, and the required operational variance in linepack for the Month (collectively, the “Fuel”) by the total estimated Nominations for the Month (“the Fuel Percentage”). 
 5.2 Procedure for Fuel: Terasen Gas or its agent will advise the Shipper by fax, or other such method agreed to by Terasen Gas and Shipper, of the applicable Fuel
Percentage by no later than the twenty-fifth (25th) day of the Month for the following Month, which amount shall be expressed as a percentage of the quantity of gas to be delivered at the Delivery Point in that Month. In the absence of such
notification, the Shipper shall use the monthly Fuel Percentage communicated by Terasen Gas for the preceding Month. In the following Month’s estimate of Fuel, Terasen Gas shall provide an adjustment based on any differences between actual Fuel
in the preceding Month and the Fuel provided by the Shipper for that Month, as determined by Terasen Gas. 
 (a) The Fuel calculation
mechanism as it relates to the Nomination and scheduling process will be (1 • Fuel Percentage) multiplied by the receipt quantity =delivery quantity. 
 (b) The transportation priority for Fuel will be the same as the level of service as the transactions to which it applies. 
 5.3 Units: The Fuel will be calculated on an energy basis. The results of the Fuel reimbursement calculation for the Nomination and scheduling process will be rounded to the nearest GJ. 

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 ARTICLE 6 
 NOMINATIONS 
 6.1 Shipper’s Nominations: Shipper shall advise Terasen Gas, or its designated agent, at the times noted below, of the
quantity of gas which it requests Terasen Gas to deliver at the Delivery Point for the Day. Such advice, hereinafter called a Nomination, shall be provided to Terasen Gas or its agent by facsimile or other such method agreed to by Terasen Gas and
Shipper for the purpose of scheduling daily transportation of natural gas under this Agreement. Shipper must advise Terasen Gas or its agent of Shipper’s Nomination not later than 10:30 Gentral Clock time on the Day prior to the Day in which
Terasen Gas is requested to deliver such gas. 
 A Nomination shall include the daily quantity requested to be transported (expressed in GJ),
the beginning and end dates and the appropriate upstream and downstream shippers. In the event that more than one Nomination is submitted, the Nomination shall include an indication of priority. The total daily quantity requested to be transported
shall not exceed the quantity of gas that is thermally equivalent to the Contract Capacity. 
 All Nominations received by Terasen Gas or its
agent shall remain in effect, whether or not deliveries are made, until an amended Nomination is received by Terasen Gas or its agent pursuant to this Section 6.1. 
 6.2 Authorized Quantity: Terasen Gas, or its agent, shall confirm the Nomination as the Authorized Quantity to the Shipper, provided that Shipper has arranged for delivery of the Nomination plus Fuel at the Receipt
Point and that Shipper has arranged for the Nomination to be transported from the Delivery Point. If the quantity of gas which Shipper has arranged for delivery at the Receipt Point is less than the Nomination plus Fuel or the quantity of gas which
Shipper has arranged for transportation from the Delivery Point is less than the Nomination, then the Authorized Quantity shall be adjusted to the lesser of those two quantities taking into consideration Fuel requirements. 
 The confirmation shall be provided to Shipper not more than one hour after Duke confirms scheduled quantities to its shippers for each nomination cycle.

 6.3 Intra-Day Nominations: Shipper shall be entitled to make Intra-Day Nominations to the extent that Intra-Day Nominations become effective on the
pipeline systems of Duke and TCPL, subject to the operations of Terasen Gas, or its agent, being able to effectively’ accommodate the Intra-Day Nomination. Intra-Day Nominations generally shall be in accord with Intra-Day Nominations available
to shippers on the Duke system including the effective time. The Intra-Day Nomination deadline shall be one hour prior to the deadline on the Duke system for the corresponding intra-day cycle. Terasen Gas, or its agent, shall confirm the Intra-Day
Nomination as the Authorized Quantity (adjusted in accordance with Section 6.2) not more than one hour after Duke confirms scheduled quantities to its shippers as Intra-Day Nominations. Intra-Day Nominations shall apply only for the specific
Day nominated. 

 6.4 Elapsed Pro-Rata: During the Intra-Day scheduling process, Intra-Day Nominations will be subject to that portion of
the scheduled quantity that would have theoretically flowed up to the effective time of the Intra-Day Nomination being confirmed, based upon a cumulative uniform hourly quantity for each Nomination cycle affected (Elapsed ProRata”). 

6.5 Communications: All Nominations and confirmations shall be delivered to the Parties as directed below or otherwise in writing: 
 Terasen Gas Inc. 16705 
 Fraser Highway
Surrey, 
 B.C. V3S 2X7 
 Attention: Marketing Services Representative 
 Telephone: (604) 592-7788 
 Facsimile: (604) 648-8751 or (403) 206-7293 
 Northwest Natural Gas Company 220 
 NW Second Avenue Portland, OR 
 97209 
 Attention: Gas Supply Department

 Telephone: (503) 226-4211 
 Facsimile: (503) 220-2421 
 6.6 Term Extension: Notwithstanding the provisions of this Agreement, in the event there is a cumulative Imbalance
(“Cumulative Imbalance”) between receipts and deliveries at the end of the Contract Term, the Contract Term of the Agreement will be extended by extending deliveries or receipts, as applicable, until such Cumulative Imbalance is eliminated
or by such method as is then mutually agreed upon by the Parties hereto. 
 ARTICLE 7 
 IMBALANCES 
 7.1 Balancing: The Shipper shall use all reasonable efforts to at all times maintain balance, based on the best
available information, between the gas received to the Shipper’s account at the Receipt Point, net of Fuel, and the gas delivered by the Terasen Gas from the Shipper’s account at the Delivery Point. Any difference between gas received and
delivered on a given Day, will be considered an Imbalance for the Day. In the event the gas received exceeds that delivered, then the Imbalance will be considered a pack (“Pack Imbalance”). In the event the gas delivered exceeds that
received then the Imbalance will be considered a draft (“Draft Imbalance”). 

 7.2 Tracking Imbalances: In the event that Terasen Gas determines that there is a Pack Imbalance or Draft Imbalance on a
Day, that amount will be accumulated with the Pack Imbalances and Draft Imbalances for previous Days and tracked as a Cumulative Imbalance. 
 7.3
Communication of Imbalances: Terasen Gas or its agent will communicate any Pack Imbalance, Draft Imbalance, and the Cumulative Imbalance each Day together with the Authorized Quantity as set out in Section 6.2. 
 7.4 Imbalance Remedy: If Terasen Gas determines that a Shipper has a Pack Imbalance or Draft Imbalance, Terasen Gas at any point may request that the Shipper remedy, in
whole or in part, such Imbalance within the next Day or other such timeframe that is agreed on by the Parties. Shipper will reduce Pack Imbalances by placing requests with Terasen Gas for Imbalance return (“Imbalance Return”) and will
reduce Draft Imbalances by placing requests for Imbalance payback (“Imbalance Payback”). These requests shall be considered Imbalance Nominations and are Subject to the Nomination rules and deadlines pursuant to Article 6. Imbalance
Nominations that are Shipper’s response to Terasen Gas’ request that the Shipper remedy an Imbalance under this Section 7.4 shall be of higher priority than all other Nominations. The Cumulative Imbalance will be increased or
decreased accordingly by the Imbalance Paybacks and Imbalance Returns authorized for the Day. 
 7.5 Adjustment of Receipts and Deliveries: In the event the
Shipper does not submit Nominations to remedy an Imbalance as requested by Terasen Gas pursuant to Section 7.4, Terasen Gas has the right to adjust the receipts and deliveries of Shipper’s gas to the extent needed to remedy the Imbalance.

 7.6 Penalties: If Terasen Gas has requested that Shipper remedy any Imbalance pursuant to Section 7.4, and the Shipper fails to comply, then to the
extent that Terasen Gas was not successful in remedying the Imbalance, the Shipper shall pay to Terasen Gas a fee equal to the Imbalance amount not remedied expressed in GJs, multiplied by the greater of the Sumas Daily Absolute High plus 10% or the
Kingsgate Daily Absolute High plus 10% for the Day that the Imbalance was to be remedied. In the event the Shipper is assessed a penalty, the Shipper’s Cumulative Imbalance will be adjusted accordingly by the amount of gas on which the Shipper
was assessed the penalty. 
 7.7 Error on Terasen Gas’ Part: If an Imbalance is created as a result of an error on the part of the Terasen Gas or its
designated agent during the scheduling process, then Terasen Gas must eliminate the Imbalance the next Day unless otherwise agreed to by the Parties. If the Imbalance caused by the Terasen Gas’ error is not eliminated the next Day, then Terasen
Gas shall pay to the Shipper a fee equal to the amount of the unresolved Imbalance multiplied by the greater of the Sumas Daily Absolute High plus 10% or the Kingsgate Daily Absolute High plus 10% for the Day the imbalance was created. Payment of
this penalty would result in the Cumulative Imbalance amount being adjusted accordingly by the amount of gas on which the Terasen Gas was assessed a penalty. 

 7.8 Potential for Future Changes to Balancing Requirements: The Parties recognize that Duke may obtain NEB approval for
changes to the balancing provisions set out in the Duke General Tenns and Conditions that may result in balancing penalties beyond those currently provided for in the current Duke General Tenns and Conditions. In this event, Terasen Gas reserves the
right to recover any such penalty costs assessed to Terasen Gas as a result of the Shipper failing to take delivery of the Authorized Quantity for a Day. 
 In the event that the Southern Crossing Pipeline system is expanded and the balancing requirements for shippers transporting gas on the expansion capacity are different than the balancing requirements described under
this section 7, the balancing requirements set out in this Section 7 shall be modified to align with the balancing provisions for the expansion capacity. 
 ARTICLE 8 
 RECEIPT AND DELIVERY OF GAS 
 8.1 Delivery
Obligation: Terasen Gas’ obligation to deliver gas to Shipper on any Day at the Delivery Point shall be subject to: 
 (a) Terasen Gas
having authorized the transportation of gas on that Day pursuant to a Nomination; and 
 (b) Shipper delivering to Terasen Gas at the Receipt
Point the Authorized Quantity plus Fuel and adjusted for any Imbalance Nominations. 
 8.2 Receipt Point Pressure: Shipper shall deliver to Terasen Gas the
Authorized Quantity at such pressure at the Receipt Point as is in accordance with the General Terms and Conditions of the applicable interconnecting pipeline, Le. TCPL or Duke or both as the circumstances require. 
 8.3 Energy Conversion: From time to time Terasen Gas, or its agent, shall notify Shipper of the Gross Heating Value to be used for calculating the quantity of gas in GJs
which is equivalent to Shipper’s Contract Capacity. This quantity of gas shall be used in Teresen Gas’ or its agent’s scheduling process. 
 8.4 Commingled: Terasen Gas shall be deemed to be in possession of, and control of, and responsible for all gas received at the Receipt Point until such gas is delivered by it at the Delivery Point. Terasen Gas shall have the right to
commingle such gas with other gas in the Terasen Gas facilities or in the facilities of others transporting the gas. 

 Terasen Gas Tariff 
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 ARTICLE 9 
 STATEMENT AND PAYMENTS 
 9.1 Billing Period: Commencing in the Month following the Month in
which the Commencement Date occurs, Terasen Gas shall, on or before the twenty-first (21st) day of each Month, deliver to Shipper a statement of the
amount payable by Shipper for all services provided by Terasen Gas to Shipper during the preceding Month. 
 9.2 Payment: All payments shall be made in readily available Canadian Funds to Terasen Gas or its designate on or before the last Business Day of the Month following the Month in which services were provided unless Shipper receives a
statement from Terasen Gas after the twenty-first (21st) day of the Month following the Month in which services were provided, in which case payment shall become due on or before the tenth (10th) calendar day after which the Shipper receives a statement from Terasen Gas. If the payment due date falls on a day other than a Business Day, payment will be due on the closest
following Business Day. 
 9.3 Failure to Pay: If the Shipper fails or neglects to make any payment required under this Agreement to Terasen Gas when due,
interest on the outstanding amount will accrue, at the annual rate of interest declared by the chartered bank in Canada principally used by Terasen Gas, for loans in Canadian dollars to its most creditworthy commercial borrowers payable on demand
and commonly referred to as its ‘prime rate”, plus: 
 (a) 2% from the date when such payment was due for the first thirty
(30) Days that such payment remains unpaid and 5% thereafter until the same is paid when the Shipper has not, during the immediately preceding six (6) Month period, failed to make any payment when due hereunder; or 
 (b) 5% from the date when such payment was due to and including the date the same is paid when the Shipper has, during the immediately preceding six
(6) Month period, failed to make any payment when due hereunder. 
 9.4 Billing Disputes: If the Shipper disputes any portion of any payment billed to
Shipper by Terasen Gas under this Agreement, Shipper will nonetheless pay to Terasen Gas that portion of the amount which is not in dispute on or before the specified due date. Shipper and Terasen Gas will cooperate to resolve any billing disputes
in an expeditious and timely manner. In the event that the amount in dispute is subsequently determined to have been properly due and owing, Shipper will forthwith pay to Terasen Gas the disputed amount in full, together with interest accrued
thereon from the due date at the rate specified in Section 9.3. 
 9.5 Service Suspension: Terasen Gas may cease to receive and deliver gas to Shipper
if Shipper fails to pay Shipper all monies due and owing in accordance with provisions of this Article 9. 

 9.6 Examination of Records: Each of Terasen Gas and the Shipper shall have the right. at its own expense, at reasonable
times and upon reasonable notice to examine, audit, and to obtain copies of the books, records and charts of the other Party, only to the extent reasonably necessary to verify accuracy of any statement, charge, payment. computation, or any claim for
underpayment or overpayment. This right to examine, audit, and to obtain copies shall not be available with respect to proprietary information not directly relevant to transactions under this Agreement. All invoices and billings shall be
conclusively presumed final and accurate and all associated claims for under or over payments shall be deemed waived unless such invoices or billings are objected to in writing, with adequate explanation and/or documentation, within two
(2) years after the month of transportation provided under this Agreement All retroactive adjustments under this Article 9 shall be paid in full by the Party owing payment within thirty (30) days of notice and substantiation of such
inaccuracy, 
 ARTICLE 10 
 WARRANTY OF OWNERSHIP OR CONTROL AND
ELIGIBILITY FOR TRANSPORTATION 
 10.1 Shipper’s Warranty: Shipper warrants that all gas delivered to Terasen Gas for transportation under this Agreement
shall be owned by or validly under the control of Shipper or other Persons delivering the gas on the Shipper’s behalf to Terasen Gas. Shipper will indemnify Terasen Gas and save it, its directors, officers, agents and employees and its
successors and assigns, harmless from all suits, actions, damages, costs, losses, expenses (including reasonable legal fees) and regulatory proceedings, arising from breach of this warranty or any misrepresentation relating thereto. 
 ARTICLE 11 
 QUALITY OF GAS 
 11.1 Receipt Point The gas delivered by Shipper to Terasen Gas at the Receipt Point for transportation to the Delivery Point shall meet the quality specifications
contained in Duke’s General Terms and Conditions, as amended from time to time, provided that such specifications are no more stringent than the specifications of TCPL 
 11.2 Delivery Point: The gas Terasen Gas delivers to Shipper or for Shipper’s account under this Agreement shall have the constituent parts that result from the commingling of gas from various sources in the
facilities used to transport gas for Terasen Gas and shall meet Duke’s specifications. 

 11.3 Non Conforming Gas: If the gas delivered to Terasen Gas for transportation under this Agreement shall fail at any
time to conform to any of the specifications set forth in this Article 11, then Terasen Gas or its agent shall notify Shipper of such deficiency and may, at its option, refuse to accept such gas pending Shipper remedying such failure to conform to
the required quality specifications. However, any such refusal shall not relieve Shipper from any obligation to pay its Demand Charge, or any other charge payable to Terasen Gas under this Agreement. 
 ARTICLE 12 
 MEASUREMENT 
 12.1 Volumetric Unit Except as otherwise specified in this Agreement, the unit of volume of gas for all purposes
hereunder shall be one thousand (1,000) Cubic Metres (103m3). 
 12.2 Energy Unit The unit of energy of gas for all purposes hereunder shall be one GJ. The volume of gas transported by
Terasen Gas for each Day shall be determined by dividing the quantity of energy transported by the average Gross Heating Value of the gas over the same period. The Gross Heating Value shall be determined at reasonable intervals by the Party
operating the measuring equipment 
 12.3 Measuring Equipment The volume of gas transported under this Agreement shall be determined by means of a metering
device approved in accordance with standard industry practices. 
 12.4 Measuring Procedures: All fundamental constants, observations, records, and
procedures involved in determining and/or verifying the quantity and other characteristics of gas delivered will, unless otherwise specified in this Agreement, be in accordance with the measurement standards recognized as standard industry
practices. 
 12.5 Preservation of Data: Terasen Gas shall preserve or cause to be preserved all measurement test data, measurement charts, and other similar
records pertaining to the Firm Service provided by Terasen Gas under this Agreement for a period of two (2) years from the date of their creation. Unless otherwise challenged by a Party within that period, all such data, charts and records
shall be deemed to be final and conclusive. 
 12.6 Rounding: The volume of gas shall be specified in
103 m3 to one decimal place and energy shall be
specified in GJs rounded to the nearest GJ. 

 Terasen Gas Tariff 
 Supplement -Other 
 ARTICLE 13 
 CONTRACT DEMAND CREDITS 
 13.1 Service Interruption: If on any Day and for any reason, Terasen Gas is unable to take receipt of
gas which was Nominated by Shipper at the Receipt Point, or deliver gas at the Delivery Point which was Nominated by Shipper (hereafter a Service Interruption” and such volume referred to as the “Interrupted Volume”) then, subject to
paragraphs 13.2 (a) and (b), Shipper will be entitled to a credit on its next monthly bill, for that Service Interruption. The credit shall be equal to the Demand Charge in effect during the Service Interruption, and multiplied by the
Interrupted Volume. 
 132 Demand Charge Obligation: Shipper will not be entitled to receive a credit pursuant to Section 13.1: 
 (a) for any period of time during a Service Interruption when Shipper is unable to deliver gas to Terasen Gas at the Receipt Point or accept delivery of
gas at the Delivery Point, and 
 (b) for any period of time during a Service Interruption when Terasen Gas was unable to receive gas from or
on behalf of Shipper at the Receipt Point due to the scheduled maintenance, repair or modification of the facilities of Terasen Gas or any part thereof including connecting facilities such as Duke or others upon which Terasen Gas may be dependent
upon to effect delivery under this Agreement. To the extent practicable, Terasen Gas will use commercially reasonable efforts to cause repairs or maintenance to be made to minimize interruption or curtailment of transportation service to Shipper
under this Agreement, and to restore service as quickly as possible. 
 13.3 Make-Up Gas: If Terasen Gas and Shipper agree, Terasen Gas may allow
Shipper to deliver to Terasen Gas for receipt at the Receipt Point additional volumes of gas as makeup gas for that quantity which Terasen Gas was unable to receive during a Service Interruption. In such event Shipper will not be entitled to receive
a credit in respect of any such gas so received by Terasen Gas.Form of Change in Control Severance Agreement

 Exhibit 10.(o) 
                      , 2008 
  

	
	  

	  

	  

 Re: Change in Control Severance Agreement 
 Dear                     :

 Northwest Natural Gas Company, an Oregon corporation (the “Company”), considers the establishment and maintenance of a sound and
vital management to be essential to protecting and enhancing the best interests of the Company. In this connection, the Company recognizes that, as is the case with many publicly held corporations, the possibility of a change in control may exist
and that such possibility, and the uncertainty and questions which it may raise among management, may result in the departure or distraction of management personnel to the detriment of the Company, its customers and its shareholders. Accordingly,
the Board of Directors of the Company (the “Board”) has determined that appropriate steps should be taken to reinforce and encourage the continued attention and dedication of members of the Company’s management to their assigned
duties without distraction in circumstances arising from the possibility of a change in control of the Company. 
 In order to induce you to
remain in the employ of the Company, this letter agreement, which has been approved by the Board, sets forth severance benefits which the Company agrees will be provided to you in the event your employment with the Company is terminated in
connection with a Change in Control (as defined in Section 3 hereof) under the circumstances described below. The Company and you have entered into a prior letter agreement regarding change in control severance benefits dated December 14,
2006. Upon your signature of this letter agreement, the prior agreement shall be amended and restated in its entirety in the form of this agreement. 
 1. Agreement to Provide Services; Right to Terminate. 
 (i) Except as otherwise provided in
paragraph (ii) below, the Company or you may terminate your employment at any time, subject to the Company’s providing the benefits hereinafter specified in accordance with the terms hereof. 
 (ii) In the event of a Potential Change in Control (as defined in Section 3 hereof), you agree that you will not leave the employ of the Company
(other than as a result of Disability, as such term is hereinafter defined) and will render the services contemplated in the 

 Page 2 
  

 
recitals to this Agreement until the earliest of (a) a date which is 270 days from the occurrence of such Potential Change in Control, or (b) a
termination of your employment pursuant to which you become entitled under this Agreement to receive the benefits provided in Section 5(iii) below. 
 2. Term of Agreement. This Agreement shall commence on the date hereof and shall continue in effect until December 31, 2009; provided, however, that commencing on January 1, 2010 and each
January 1 thereafter, the term of this Agreement shall automatically be extended for one additional year unless at least 90 days prior to such January 1 date, the Company or you shall have given notice that this Agreement shall not be
extended (provided that no such notice may be given by the Company during the pendency of a Potential Change in Control); and provided, further, that this Agreement shall continue in effect for a period of twenty-four (24) months beyond the
term provided herein if a Change in Control shall have occurred during such term. Notwithstanding anything in this Section 2 to the contrary, this Agreement shall terminate automatically if you or the Company terminate your employment prior to
the earlier of Shareholder Approval (as defined in Section 3 hereof), if applicable, or the Change in Control. In addition, the Company may terminate this Agreement during your employment if, prior to the earlier of Shareholder Approval, if
applicable, or the Change in Control, you cease to hold your current position with the Company, except by reason of a promotion. 
 3.
Change in Control; Potential Change in Control; Shareholder Approval; Person. 
 (i) For purposes of this Agreement, a “Change
in Control” shall mean the occurrence of any of the following events: 
 (A) The consummation of: 
 (1) any consolidation, merger or plan of share exchange involving the Company (a “Merger”) as a result of which the holders of
outstanding securities of the Company ordinarily having the right to vote for the election of directors (“Voting Securities”) immediately prior to the Merger do not continue to hold at least 50% of the combined voting power of the
outstanding Voting Securities of the surviving corporation or a parent corporation of the surviving corporation immediately after the Merger, disregarding any Voting Securities issued to or retained by such holders in respect of securities of any
other party to the Merger; or 
 (2) any sale, lease, exchange or other transfer (in one transaction or a series of related
transactions) of all, or substantially all, the assets of the Company; 
 (B) At any time during a period of two consecutive
years, individuals who at the beginning of such period constituted the Board (“Incumbent Directors”) shall cease 

 Page 3 
  

 
for any reason to constitute at least a majority thereof; provided, however, that the term “Incumbent Director” shall also include each new
director elected during such two-year period whose nomination or election was approved by two-thirds of the Incumbent Directors then in office; or 
 (C) Any Person (as hereinafter defined) shall, as a result of a tender or exchange offer, open market purchases or privately negotiated purchases from anyone other than the Company, have become the beneficial owner
(within the meaning of Rule 13d-3 under the Securities Exchange Act of 1934), directly or indirectly, of Voting Securities representing twenty percent (20%) or more of the combined voting power of the then outstanding Voting Securities.

 Notwithstanding anything in the foregoing to the contrary, unless otherwise determined by the Board, no Change in Control shall be deemed to have occurred
for purposes of this Agreement if (1) you acquire (other than on the same basis as all other holders of shares of Common Stock of the Company) an equity interest in an entity that acquires the Company in a Change in Control otherwise described
under subparagraph (A) above, or (2) you are part of a group that constitutes a Person which becomes a beneficial owner of Voting Securities in a transaction that otherwise would have resulted in a Change in Control under subparagraph
(C) above. 
 (ii) For purposes of this Agreement, a “Potential Change in Control” shall be deemed to have occurred if:

 (A) the Company enters into an agreement, the consummation of which would result in the occurrence of a Change in Control;

 (B) any Person (including the Company) publicly announces an intention to take or to consider taking actions which if
consummated would constitute a Change in Control; or 
 (C) the Board adopts a resolution to the effect that, for purposes of
this Agreement, a Potential Change in Control has occurred. 
 (iii) For purposes of this Agreement, “Shareholder Approval” shall
be deemed to have occurred if the shareholders of the Company approve an agreement entered into by the Company, the consummation of which would result in the occurrence of a Change in Control. 
 (iv) For purposes of this Agreement, the term “Person” shall mean and include any individual, corporation, partnership, group, association or
other “person,” as such term is used in Section 14(d) of the Securities Exchange Act of 1934 (the “Exchange Act”), other than the Company or any employee benefit plan sponsored by the Company. 
 4. Termination Following Shareholder Approval or Change in Control. If a Change in Control occurs, you shall be entitled to the benefits provided
in Section 5(iii) hereof in the event that (x) a Date of Termination (as defined in Section 4(v) below) of your employment with 

 Page 4 
  

 
the Company occurred or occurs after the earlier of Shareholder Approval, if applicable, or the Change in Control and no later than twenty-four
(24) months after the Change in Control, or (y) your employment with the Company is terminated by you for Good Reason (as defined below) based on an event occurring concurrent with or subsequent to the earlier of Shareholder Approval, if
applicable, or the Change in Control and your Notice of Termination (as defined in Section 4(iv) below) in connection therewith shall have been given no later than twenty-four (24) months after the Change in Control; provided, however,
that if any such termination is (a) because of your death, (b) by the Company for Cause (as defined below) or Disability, or (c) by you other than for Good Reason based on an event occurring concurrent with or subsequent to the
earlier of Shareholder Approval, if applicable, or the Change in Control, then you shall not be entitled to the benefits provided in Section 5(iii) hereof. 
 (i) Disability. Termination by the Company of your employment based on “Disability” shall mean termination because of your absence from your duties with the Company on a full-time basis for one
hundred eighty (180) consecutive days as a result of your incapacity due to physical or mental illness, unless within thirty (30) days after Notice of Termination is given to you following such absence you shall have returned to the
full-time performance of your duties. 
 (ii) Cause. Termination by the Company of your employment for “Cause” shall mean
termination upon (a) the willful and continued failure by you to perform substantially your assigned duties with the Company (other than any such failure resulting from your incapacity due to physical or mental illness) after a demand for
substantial performance is delivered to you by the Chairman of the Board or President of the Company which specifically identifies the manner in which such executive believes that you have not substantially performed your duties or (b) the
willful engaging by you in illegal conduct which is materially and demonstrably injurious to the Company. For purposes of this paragraph (ii), no act, or failure to act, on your part shall be considered “willful” unless done, or omitted to
be done, by you in knowing bad faith and without reasonable belief that your action or omission was in, or not opposed to, the best interests of the Company. Any act, or failure to act, based upon authority given pursuant to a resolution duly
adopted by the Board or based upon the advice of counsel for the Company shall be conclusively presumed to be done, or omitted to be done, by you in good faith and in the best interests of the Company. Notwithstanding the foregoing, you shall not be
deemed to have been terminated for Cause unless and until there shall have been delivered to you a copy of a resolution duly adopted by the affirmative vote of not less than three-quarters of the entire membership of the Board at a meeting of the
Board called and held for the purpose (after reasonable notice to you and an opportunity for you, together with your counsel, to be heard before the Board), finding that in the good faith opinion of the Board you were guilty of the conduct set forth
above in (a) or (b) of this paragraph (ii) and specifying the particulars thereof in detail. 
 (iii) Good Reason.
Termination by you of your employment with the Company for “Good Reason” shall mean termination by you of your employment with the Company based on any of the following events provided you give Notice of Termination after 

 Page 5 
  

 
the occurrence of any of the following events and no later than 30 days after the later of (1) notice to you of such event, or (2) the Change in
Control: 
 (A) a change in your status, title, position(s) or responsibilities as an officer of the Company which does not
represent a promotion from your status, title, position(s) and responsibilities as in effect immediately prior to the earlier of Shareholder Approval, if applicable, or the Change in Control, or the assignment to you of any duties or
responsibilities which are inconsistent with such status, title or position(s), or any removal of you from or any failure to reappoint or reelect you to such position(s), except in connection with the termination of your employment for Cause or
Disability or as a result of your death or by you other than for Good Reason; 
 (B) a reduction by the Company in your base
salary as in effect immediately prior to the earlier of Shareholder Approval, if applicable, or the Change in Control; 
 (C)
the failure by the Company to continue in effect any Plan (as hereinafter defined) in which you are participating immediately prior to the earlier of Shareholder Approval, if applicable, or the Change in Control (or Plans providing you with at least
substantially similar benefits) other than as a result of the normal expiration of any such Plan in accordance with its terms as in effect immediately prior to the earlier of Shareholder Approval, if applicable, or the Change in Control, or the
taking of any action, or the failure to act, by the Company which would adversely affect your continued participation in any of such Plans on at least as favorable a basis to you as is the case immediately prior to the earlier of Shareholder
Approval, if applicable, or the Change in Control or which would materially reduce your benefits in the future under any of such Plans or deprive you of any material benefit enjoyed by you immediately prior to the earlier of Shareholder Approval, if
applicable, or the Change in Control; 
 (D) the failure by the Company to provide and credit you with the number of paid
vacation days to which you are then entitled in accordance with the Company’s normal vacation policy as in effect immediately prior to the earlier of Shareholder Approval, if applicable, or the Change in Control; 
 (E) the Company’s requiring you to be based more than 30 miles from where your office is located immediately prior to the earlier of
Shareholder Approval, if applicable, or the Change in Control except for required travel on the Company’s business to an extent substantially consistent with the business travel obligations which you undertook on behalf of the Company prior to
the earlier of Shareholder Approval, if applicable, or the Change in Control; 
 (F) the failure by the Company to obtain
from any Successor (as hereinafter defined) the assent to this Agreement contemplated by Section 7 hereof; 

 Page 6 
  

 (G) any purported termination by the Company of your employment which is not effected
pursuant to a Notice of Termination satisfying the requirements of paragraph (iv) below (and, if applicable, paragraph (ii) above); and for purposes of this Agreement, no such purported termination shall be effective; or 
 (H) the failure by the Company to pay you any portion of your current compensation, to credit your Deferred Compensation Plan account in
accordance with your previous election, or to pay you any portion of an installment of deferred compensation under any Plan in which you participated, within seven (7) days of the date such compensation is due. 
 For purposes of this Agreement, “Plan” shall mean any compensation plan such as an incentive, stock option or restricted stock plan or any employee benefit
plan such as a thrift, pension, profit sharing, deferred compensation, medical, disability, accident, life insurance, or relocation plan or policy or any other plan, program or policy of the Company intended to benefit employees. 
 (iv) Notice of Termination. Any purported termination by the Company or by you (other than termination due to your death, which shall terminate
your employment automatically) following the earlier of Shareholder Approval, if applicable, or a Change in Control shall be communicated by Notice of Termination to the other party hereto. For purposes of this Agreement, a “Notice of
Termination” shall mean a notice which shall indicate the specific termination provision in this Agreement relied upon and shall set forth in reasonable detail the facts and circumstances claimed to provide a basis for termination of your
employment under the provision so indicated. 
 (A) With respect to any Notice of Termination given by you for Good Reason,
such Notice of Termination may indicate that such termination for Good Reason shall be conditioned upon, and postponed until, the date on which it is finally determined, either by mutual written agreement of the parties or by the arbitrators in a
proceeding as provided in Section 13 hereof, that Good Reason exists for such termination. If a Notice of Termination given by you for Good Reason indicates that such termination shall be so conditioned and postponed, then, if the Company
disputes the existence of Good Reason, the Company shall, within thirty (30) days after the Notice of Termination is given, notify you that a dispute exists concerning the termination, whereupon Section 13 hereof shall apply to such
dispute. If no such notice is given by the Company within such 30-day period, then a final determination that Good Reason exists shall be deemed to have occurred on the date thirty (30) days after the Notice of Termination for Good Reason is
given. 
 (B) Notwithstanding anything to the contrary in this Agreement: 
 (1) if, at any time before the Date of Termination determined pursuant to this Agreement with respect to any purported termination by
you of your employment with the Company, there exists a basis for the Company to terminate 

 Page 7 
  

 
your employment for Cause, then the Company may, regardless of whether or not you have given Notice of Termination for Good Reason and regardless of whether
or not Good Reason exists, terminate your employment for Cause, in which event you shall not be entitled to the benefits provided in Section 5(iii) hereof, and 
 (2) if you die or your employment is terminated based on Disability after you have given Notice of Termination for Good Reason and
before the Date of Termination determined under this Agreement with respect to that Notice of Termination, and it is subsequently finally determined that Good Reason existed at the time your employment terminated, then termination of your employment
shall be deemed to have occurred for Good Reason (and not due to your death or Disability) and you shall be entitled to the benefits provided in Section 5(iii) hereof. 
 (v) Date of Termination. “Date of Termination” shall mean the date your employment with the Company is terminated following the earlier
of Shareholder Approval, if applicable, or a Change in Control, which date shall be determined as follows: 
 (A) if your
employment is to be terminated for Disability, thirty (30) days after Notice of Termination is given (provided that, if you shall have returned to the performance of your duties on a full-time basis during such thirty (30) day period, then
the termination for Disability contemplated by the Notice of Termination shall not occur), 
 (B) if your employment is
terminated due to your death, the date of your death, 
 (C) if your employment is to be terminated by the Company other than
for Disability, or if your employment is to be terminated by you without a claim of Good Reason, the date specified in the Notice of Termination, and 
 (D) if your employment is to be terminated by you for Good Reason, the date ninety (90) days after the date on which a Notice of Termination is given, unless either: 
 (1) an earlier date has been agreed to by the Company either in advance of, or after, receiving such Notice of Termination (in which
case such earlier date shall be the Date of Termination), 
 (2) pursuant to and in accordance with Section 4(iv) you
have indicated in your Notice of Termination that you are conditioning your termination upon (and postponing such termination until) the date on which it is finally determined that Good Reason exists for such termination (in which case the later of
such date as determined in accordance with Section 4(iv) above, or the date otherwise determined under this Section 4(v)(D), shall be the Date of Termination), 

 Page 8 
  

 (3) the Company shall not have notified you within fifteen (15) days after a Notice
of Termination for Good Reason is given that it intends to fully correct the circumstances giving rise to Good Reason (in which case the date fifteen (15) days after the Notice of Termination shall be the Date of Termination), or 
 (4) if the Company gives notice as provided in Section 4(v)(D)(3) and if the circumstances giving rise to Good Reason are fully
corrected on or prior to the date that is ninety (90) days after such Notice of Termination was given, then the termination for Good Reason contemplated by such Notice of Termination shall not occur. 
 (E) You shall not be obligated to perform any services after the Date of Termination that would prevent the termination of your
employment on such Date of Termination from qualifying as a “separation from service” as defined in Treasury Regulations §1.409A-1(h). 
 5. Compensation Upon Termination or During Disability. 
 (i) During any period following the earlier
of Shareholder Approval, if applicable, or a Change in Control that you fail to perform your duties as a result of incapacity due to physical or mental illness, you shall continue to receive your full base salary at the rate then in effect and any
benefits or awards under any Plans shall continue to accrue during such period, to the extent not inconsistent with such Plans, until your employment is terminated pursuant to and in accordance with Sections 4(i) and 4(v) hereof. Thereafter, your
benefits shall be determined in accordance with the Plans then in effect. 
 (ii) If your employment shall be terminated for Cause or as a
result of death following the earlier of Shareholder Approval, if applicable, or a Change in Control, the Company shall pay you your full base salary through the Date of Termination at the rate in effect just prior to the time a Notice of
Termination is given plus any benefits or awards which pursuant to the terms of any Plans have been earned or become payable, but which have not yet been paid to you. Thereupon the Company shall have no further obligations to you under this
Agreement. 
 (iii) If a Change in Control occurs and either (a) after the earlier of Shareholder Approval, if applicable, or the
Change in Control and no later than twenty-four (24) months after the Change in Control, a Date of Termination of your employment with the Company occurred or occurs as a result of a termination by the Company other than for Cause or
Disability, or (b) your employment with the Company is terminated by you for Good Reason based on an event occurring concurrent with or subsequent to the earlier of Shareholder Approval, if applicable, or the Change in Control and your Notice
of Termination in connection therewith shall have been given no later than twenty-four (24) months after the Change in Control, then, by no later than the fifth day following the later of the Date of Termination or the Change in Control (except
as 

 Page 9 
  

 
may otherwise be provided), you shall be entitled, without regard to any contrary provisions of any Plan, to a severance benefit as follows: 
 (A) the Company shall pay your full base salary through the Date of Termination at the rate in effect just prior to the time a Notice of
Termination is given plus any benefits or awards which pursuant to the terms of any Plans have been earned or become payable, but which have not yet been paid to you; provided, however, that with respect to a termination of your employment for Good
Reason based on a reduction by the Company in your base salary as in effect immediately prior to the earlier of Shareholder Approval, if applicable, or the Change in Control, the Company shall pay your full base salary through the Date of
Termination at the rate in effect just prior to such reduction plus any benefits or awards which pursuant to the terms of any Plans have been earned or become payable, but which have not yet been paid to you; 
 (B) as severance pay and in lieu of any further salary for periods subsequent to the Date of Termination, the Company shall pay to you in
a single payment an amount in cash equal to                 (            ) times the sum of
(1) the greater of (i) your annual rate of base salary in effect on the Date of Termination or (ii) your annual rate of base salary in effect immediately prior to the earlier of Shareholder Approval, if applicable, or the Change in
Control and (2) the greater of (i) the average of the last three annual bonuses (annualized in the case of any bonus paid with respect to a partial year) paid to you preceding the Date of Termination or (ii) the average of the last
three annual bonuses (annualized in the case of any bonus paid with respect to a partial year) paid to you preceding the earlier of Shareholder Approval, if applicable, or the Change in Control; provided, however, that if your age on the Date
of Termination (your “Age”) is more than 61, the amount payable to you under this subparagraph (B) shall be reduced by multiplying the amount otherwise determined as set forth above by 90% if your Age is 62, by 60% if your Age is 63,
by 30% if your Age is 64, and by 0% if your Age is 65 or more; and 
 (C) for a
                (            ) month period after the Date of Termination (specifically
including a Date of Termination that occurs after Shareholder Approval and prior to a Change in Control), the Company shall arrange to provide you, your spouse and your dependents with life, accident and health insurance benefits substantially
similar to those which you were receiving immediately prior to the earlier of Shareholder Approval, if applicable, or the Change in Control. Notwithstanding the foregoing, the Company shall not provide any benefit otherwise receivable by you
pursuant to this subparagraph (C) to the extent that a similar benefit is actually received by you from a subsequent employer during such
                (            ) month period, and any such benefit actually received by you
shall be reported to the Company. 
 (iv) The amount of any payment provided for in this Section 5 shall not be reduced, offset or
subject to recovery by the Company by reason of any compensation earned by you as the result of employment by another employer after the Date of Termination, or 

 Page 10 
  

 
otherwise. Your entitlements under Section 5(iii) are in addition to, and not in lieu of, any rights, benefits or entitlements you may have under the
terms or provisions of any Plan. 
 6. Parachute Payments. Notwithstanding any other provision in this Agreement or any other
agreement or arrangement between the Company and you with respect to compensation or benefits (each an “Other Arrangement”), in the event that the provisions of Sections 280G and 4999 of the Internal Revenue Code of 1986, as amended, or
any successor provisions (the “Code”), would cause you to receive a greater after-tax benefit from the Capped Benefit (as defined below) than from the amounts (including the monetary value of any non-cash benefits) otherwise payable
pursuant to this Agreement or any Other Arrangement (the “Specified Benefits”), the Capped Benefit shall be paid to you in lieu of the Specified Benefits. The “Capped Benefit” shall equal the Specified Benefits, reduced by the
amount necessary to prevent any portion of the Specified Benefits from being a “parachute payment” as defined in Section 280G(b)(2) of the Code. The Capped Benefit would therefore equal 2.99 multiplied by your applicable “base
amount” as defined in Section 280G(b)(3) of the Code. For purposes of determining whether you would receive a greater after-tax benefit from the Capped Benefit than from the Specified Benefits, there shall be taken into account any excise
tax that would be imposed under Section 4999 of the Code and all federal, state and local taxes required to be paid by you in respect of the receipt of such payments. The parties acknowledge that the application of Section 280G is
uncertain in many respects and agree that the Company shall make all calculations and determinations under this section (including application and interpretation of the Code and related regulatory, administrative and judicial authorities) in good
faith, which calculations and determinations shall be conclusive absent manifest error. The Company shall provide you with a reasonable opportunity to review and comment on the Company’s calculations of the Capped Benefit and to request which
of the Specified Benefits shall be reduced. If, after payment of any amount under this Agreement or any Other Arrangement, it is determined that the calculation of the Capped Benefit was calculated incorrectly, the amount of the Capped Benefit will
be adjusted, the Company shall pay to you any additional amount that should have been paid to you, and you shall repay to the Company any amount that should not have been paid to you, in each case with interest at the discount rate applicable under
Section 280G(d)(4) of the Code. 
 7. Successors; Binding Agreement. 
 (i) Upon your written request, the Company will seek to have any Successor (as hereinafter defined), by agreement in form and substance satisfactory to
you, assent to the fulfillment by the Company of its obligations under this Agreement. For purposes of this Agreement, “Successor” shall mean any Person that succeeds to, or has the practical ability to control (either immediately or with
the passage of time), the Company’s business directly, by merger, consolidation or purchase of assets, or indirectly, by purchase of the Company’s Voting Securities or otherwise. 
 (ii) This Agreement shall inure to the benefit of and be enforceable by your personal or legal representatives, executors, administrators, successors,
heirs, distributees, 

 Page 11 
  

 
devisees and legatees. If you should die while any amount would still be payable to you hereunder if you had continued to live, all such amounts, unless
otherwise provided herein, shall be paid in accordance with the terms of this Agreement to your devisee, legatee or other designee or, if there be no such designee, to your estate. 
 8. Fees and Expenses. The Company shall pay to you all legal fees and related expenses incurred by you in good faith as a result of (i) your
termination following the earlier of Shareholder Approval, if applicable, or a Change in Control (including all such fees and expenses, if any, incurred in contesting or disputing in good faith any such termination) or (ii) your seeking to
obtain or enforce in good faith any right or benefit provided by this Agreement. 
 9. Survival. The respective obligations of, and
benefits afforded to, the Company and you as provided in Sections 5, 6, 7(ii), 8 and 13 of this Agreement shall survive termination of this Agreement, but only with respect to a Change in Control occurring during the term of this Agreement.

 10. Notice. For the purposes of this Agreement, notices and all other communications provided for in this Agreement shall be in
writing and shall be deemed to have been duly given when delivered or mailed by United States registered mail, return receipt requested, postage prepaid and addressed to the address of the respective party set forth on the first page of this
Agreement, provided that all notices to the Company shall be directed to the attention of the Chairman of the Board or President of the Company, with a copy to the Secretary of the Company, or to such other address as either party may have furnished
to the other in writing in accordance herewith, except that notice of change of address shall be effective only upon receipt. 
 11.
Miscellaneous. No provision of this Agreement may be modified, waived or discharged unless such modification, waiver or discharge is agreed to in a writing signed by you and the Chairman of the Board or President of the Company. No waiver by
either party hereto at any time of any breach by the other party hereto of, or of compliance with, any condition or provision of this Agreement to be performed by such other party shall be deemed a waiver of similar or dissimilar provisions or
conditions at the same or at any prior or subsequent time. No agreements or representations, oral or otherwise, express or implied, with respect to the subject matter hereof have been made by either party which are not expressly set forth in this
Agreement. The validity, interpretation, construction and performance of this Agreement shall be governed by the laws of the State of Oregon. 
 12. Validity. The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement, which shall remain in full force and effect. 
 13. Arbitration. Any dispute or controversy arising under or in connection with this Agreement shall be settled exclusively by arbitration in
Portland, Oregon by three arbitrators in accordance with the rules of the American Arbitration Association then in effect. Judgment may be entered on the arbitrators’ award, which award shall be a final and binding determination of 

 Page 12 
  

 
the dispute or controversy, in any court having jurisdiction; provided, however, that you shall be entitled to seek specific performance of your right to be
paid until the Date of Termination during the pendency of any dispute or controversy arising under or in connection with this Agreement. The Company shall bear all costs and expenses of the arbitrators arising in connection with any arbitration
proceeding pursuant to this Section 13. 
 14. Related Agreements. To the extent that any provision of any other agreement
between the Company or any of its subsidiaries and you shall limit, qualify or be inconsistent with any provision of this Agreement, then for purposes of this Agreement, while the same shall remain in force, the provision of this Agreement shall
control and such provision of such other agreement shall be deemed to have been superseded, and to be of no force or effect, as if such other agreement had been formally amended to the extent necessary to accomplish such purpose. 
 15. Counterparts. This Agreement may be executed in several counterparts, each of which shall be deemed to be an original, but all of which
together will constitute one and the same instrument. 
 If this letter correctly sets forth our agreement on the subject matter hereof,
kindly sign and return to the Company the enclosed copy of this letter which will then constitute our agreement on this subject. 
  

			
	Sincerely,
	
	NORTHWEST NATURAL GAS COMPANY
		
	By	 	  

		 	 Mark S. Dodson

		 	 President and CEO

 Agreed to this
             day 
 of
                    , 2008.

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