Northern Natural Gas
August 1, 2013
Via eFiling
Ms. Kimberly D. Bose, Secretary
Federal Energy Regulatory Commission
888 First Street, N.E.
Washington, D.C. 20426
Re: Northern Natural Gas Company
West Leg 2014 Expansion Project
Docket No. CP13- -000
Dear Ms. Bose:
Northern Natural Gas Company (Northern) hereby submits for filing, pursuant to
Section 7 of the Natural Gas Act and Section 157 of the Federal Energy Regulatory
Commission’s (FERC or Commission) regulations, an application requesting the issuance of a certificate of public convenience and necessity to construct and operate certain compressor, pipeline and meter station facilities located in Iowa and Nebraska, all as more fully set forth in the application.
The filing is comprised of the following:
Application

This transmittal letter

Section 7 Application

Federal Notice

Exhibits A through P [excluding Exhibit F-1 (Environmental Report) and Exhibits G and G-II (Flow Diagrams)]
Volume I – (Public Information)

Exhibit F-1 Environmental Report - Resource Reports (RR) 1 through 13
Volume II (Critical Energy Infrastructure Information – CEII)

Exhibit G (Flow Diagrams Showing Daily Design Capacity)

Exhibit G-II (Flow Diagrams Data)

RR1 Figure 1-5 (Fremont Compressor Station Site Layout Plan)

RR1 Figure 1-7 (Homer Compressor Station Site Layout Plan)

RR1 Figure 1-9 (CF Industries Port Neal 2 Site Piping Plan)
Volume III (Privileged Other Non-Public)

RR1 Figure 1-3 (Alignment Sheets with Cultural Resources Locations)
1

Northern Natural Gas Company
West Leg 2014 Expansion Project

RR1 Appendix 1C (Landowner Listing)

RR4 Appendix 4A (Cultural Resources Reports)

RR4 Appendix 4B Part C (Native American Tribal Documents)

RR10 Figure 10-6 (Aerial Map With Minor Route Alternative and Homer
Compressor Site Alternatives – Depicts Cultural Resources Locations)
Map Book (11x17 Aerial Drawings and Diagrams)
Applicant-Prepared Draft Environmental Assessment
Northern is filing this application electronically and, in accordance with the
Commission’s filing guidelines, is providing two complete copies of the filing to OEP (Office of Energy Projects) Room 62-46 and one complete copy to OGC (Office of General
Council) Room 101-56. Two complete copies of the filing are being delivered directly to
Anthony Rana, environmental staff of the OEP, Room 6J-03. A compact disk containing
Gregg Models of Northern’s system (before and after the proposed expansion) is being delivered to OEP, engineering staff.
Volume II, which contains plot plans, and specific operating and engineering details, has been labeled “CRITICAL ENERGY INFRASTRUCTURE INFORMATION (CEII) ---
DO NOT RELEASE.” In addition, Volume III contains confidential information including landowner addresses and specific information on cultural and Native American resources.
Northern has labeled Volume III “ PRIVILEGED INFORMATION --- DO NOT RELEASE.”
Pursuant to 18 CFR Section 388.112, Northern requests confidential and privileged treatment of the information contained in Volumes II and III due to the confidential nature of the contents.
The person to be contacted regarding the request for privileged and confidential treatment is as follows:
Northern Natural Gas Company
1111 South 103rd Street
Any questions regarding this filing should be directed to the undersigned at (402)
398-7138 (donna.martens@nngco.com) or Mike Loeffler at (402) 398-7103
(mike.loeffler@nngco.com).
Respectfully submitted,
/signed/ Donna Martens
Donna Martens
Senior Regulatory Analyst
2

ABBREVIATED APPLICATION REQUESTING A CERTIFICATE
OF PUBLIC CONVENIENCE AND NECESSITY
*******************************************************************
Docket No. CPI3- -000

UNITED STATES OF AMERICA
Before the
FEDERAL ENERGY REGULATORY COMMISSION
In the Matter of
NORTHERN NATURAL GAS COMPANY
§
§
§
Docket No. CPI 3- -000
*************************************************************
Northern Natural Gas Company (Northern) hereby makes application to the Federal
Energy Regulatory Commission (Commission or FERC) pursuant to Section 7 of the
Natural Gas Act (NGA), as amended, and Part 157 of the Commission's regulations for authorization to construct and operate certain compression, pipeline and meter station facilities, with appurtenances, all located in various counties in Nebraska and Iowa, in order to meet customer requirements in Northern's Market Area. Northern is also requesting herein approval for rolled-in rate treatment of the expansion costs, approval to use certain variances to FERC's
as revised in 2013 (FERC's Procedures), and Commission issuance of an order granting approval for the proposed facilities as expeditiously as possible, but no later than February 28, 2014.
In support of this application and pursuant to the presently effective regulations under the NGA and Rules of Practice and Procedure of the Commission, Northern states and shows the following:
I

1.
GENERAL
The exact legal name of Applicant is Northern Natural Gas Company. Northern is a corporation organized under the laws of the State of Delaware, having its principal office located at
South 103rd Street, Omaha, Nebraska 68124-1000.
Northern is a "natural gas company" within the meaning of the NGA and, pursuant to Certificates of Public Convenience and Necessity issued by the Commission, is engaged in the transportation of natural gas in interstate commerce. Northern is authorized to do, and is doing, business in the states of Delaware, Texas, New Mexico, Oklahoma,
Kansas, Nebraska, Iowa, Minnesota, Illinois, Michigan, Wisconsin, North Dakota, South
Dakota, and Louisiana.
II.
CORRESPONDENCE AND COMMUNICATIONS
All correspondence and communications with respect to this application are to be sent to the following:
Mary Kay Miller, Vice President
Regulatory & Government Affairs
Northern Natural Gas Company
P.O. Box 3330
Omaha, Nebraska 68103-0330
Phone: (402) 398-7060
FAX: (402) 398-7006
Email: mary.kay.miIIernngco.com
* Dari R. Doman
Senior Counsel
Northern Natural Gas Company
P.O. Box 3330
Omaha, Nebraska 68103-0330
Phone: (402) 398-7077
FAX: (402) 398-7426
Email: dari.dornan@nngco.com
* Michael T. Loeffler, Senior Director
Certificates and External Affairs
Northern Natural Gas Company
P.O. Box 3330
Omaha, Nebraska 68103-0330
Phone: (402) 398-7103
FAX: (402) 398-7592
Email: mike.loeffIernngco.com

*
Designated to receive service pursuant to Section 385.2010(c) of the Commission's
Regulations.
Northern proposes to construct and operate: (1) an approximately 1.17-mile extension of its existing 24-inch-diameter C-line in Dakota County, Nebraska; (2) approximately 5.52 miles of a 20-inch-diameter greenfield branch line in Dakota County,
Nebraska, and Woodbury County, Iowa; (3) approximately 0.31 mile of a 20-inch-diameter greenfield tie-over branch line in Woodbury County, Iowa; (4) an approximately 4,700horsepower (HP) Industrial Standard Organization (ISO)-rated greenfield compressor station to be located in Dodge County, Nebraska; (5) an approximately 9,480-HP siterated greenfield compressor station to be located in Dakota County, Nebraska; and (6) a new meter station to be located in Woodbury County, Iowa, all as more fully described below.
The proposed facilities are required to meet requests for firm capacity that Northern received during the West Leg 2014 Expansion open season. When placed in service, the facilities will provide for incremental winter peak-day firm service of 88,430 dekatherms per day (Dth/d), serving residential, commercial and industrial customers in Northern's Market
Area by winter 2015. Northern executed agreements for incremental firm service with two
Market Area shippers totaling 5,430 Dth/d to commence for the winter 2014, increasing to
88,430 Dth/d by winter 2015.
Northern is requesting that the Commission issue a certificate by February 28,
2014, in order to ensure that the facilities proposed herein are placed in service no later than November 1, 2014
3

IV.
BACKGROUND AND BASIS
In order to meet the growth needs on the West Leg portion of Northern's Market
Area', and to ensure that capacity would be available as needed, Northern announced the West Leg 2014 Expansion in an open season held October 18 through November 7,
2012. The open season was intended to identify and quantify market growth opportunities, to solicit interest for firm transportation service and to identify the need to construct facilities to expand firm transportation capacity on Northern's West Leg system. Northern stated in the open season that construction was required for service beginning on or after November 1, 2014; however, service could commence earlier if existing capacity becomes available. Northern also provided customers with currently effective firm transportation contracts with capacity on Northern's West Leg an opportunity to turn back capacity. Northern received no requests to turn back capacity.
As a result of the West Leg 2014 Expansion open season, two customers signed precedent agreements requesting incremental annual entitlement totaling up to
88,430 Dth/d by winter 2015. The proposed facilities are required to serve increased markets for industrial, commercial and residential use that cannot be met by Northern's existing infrastructure. The West Leg 2014 Expansion project (Project), as proposed, will allow Northern to transport the incremental load through the addition of greenfield compression and greenfield pipeline facilities to Northern's existing system.
Approximately 99.5 percent, or 88,000 Dth/d, of the Project capacity will be used
The Market Area is that portion of Northern's system, including branch lines, which extends north of the Clifton compressor station located in Clay County, Kansas.
4

by CF Industries Nitrogen, LLC, successor in interest to CF Industries (hereinafter, CF
Industries), to meet raw material needs and energy demands for an ammonia and granular urea production plant expansion. The remaining 0.5 percent, or 430 Dth/d, of the Project capacity will be used by Interstate Power and Light Company (IPLC) to meet growing energy demands for residential and commercial uses. This includes the delivery of natural gas to heat homes and businesses and to supply natural gas for appliance and machinery operation.
In order to facilitate the expeditious approval of this application, Northern voluntarily used the pre-filing process established by the Commission. On November 28, 2012,
Northern's request to use the pre-filing process was filed with the Commission. Northern's request was approved by order issued December 7, 2012, in Docket No. PFI3-2-000.
During the pre-filing process, Northern executed a Public Participation Plan, which included a dedicated project website, a single-point-of-contact telephone number and email address, and a schedule of open houses. Three open houses were conducted:
February 4, 2013, in Fremont, Nebraska: February 5, 2013, in South Sioux City, Nebraska; and February 6, 2013, in Sergeant Bluff, Iowa. Also, on January 24, 2013, Northern initiated a meeting with local citizens who reside in and/or near Homer, Nebraska, to address concerns raised by the citizens regarding the planned site for one of the proposed compressor stations. Approximately 20 local citizens attended the meeting during which
Northern's representatives addressed concerns and responded to questions. Northern sent follow-up written responses to the attendees February 8, 2013. In response to stakeholder concerns received during the pre-filing process, Northern relocated its preferred site for the Homer compressor station to a location that satisfied those concerns.
5

Northern also revised the route for the greenfield branch line as a result of concerns expressed by stakeholders during the pre-filing process and relocated the meter station in response to CF Industries' request. As a result of the relocation of the meter station, the pipeline route for the final segment of the greenfield branch line and the greenfield tie-over branch line was shifted to the north.
Northern proposes to construct and operate the facilities more fully described below and respectfully requests that the Commission issue an order granting approval for the proposed facilities as expeditiously as possible, but no later than February 28, 2014, in order for Northern to commence construction activities as soon as practical to ensure an in-service date of November 1, 2014.
Northern proposes to increase peak day capacity on its West Leg by approximately
88,430 Dth/d by constructing the facilities described below.
Northern proposes to construct and operate an approximately 1.17-mileextension of its existing 24-inch-diameter C-line (NEM50I03) (C-line). The C-line extension will be comprised of two 24-inch-diameter pipelines that will parallel each other within the same right of way (ROW) along 225th Street in Section 2, Township 27
North, Range 8 East (Section 2, T27N, R8E), Dakota County, Nebraska, for a distance

of approximately 0.5 mile. 2 The parallel pipelines would be offset by a distance of 25 feet. The extension will tie in to the existing C-line north of 225th Street and extend east to the proposed Homer compressor station location to allow for suction and discharge piping tie-ins. A short segment, approximately 40 to 100 feet, of the existing C-line will be removed to facilitate the tie-in of the extension. No valves or above-grade appurtenances will be installed at the tie-in site.
Greenfield Branch Line:
Northern proposes to construct and operate approximately 5.52 miles of a 20inch-diameter greenfield branch line in Dakota County, Nebraska, and Woodbury
County, Iowa. The branch line will begin with a 20-inch-diameter take-off valve setting on the discharge side of the proposed Homer compressor station in Section 1, T27N,
R8E, Dakota County, Nebraska, extend east, crossing the Missouri River, and terminate with a 20-inch-diameter valve setting at the proposed meter station in Section 24, T87N,
R48W, Woodbury County, Iowa. The branch line will cross eastern parts of Nebraska
(Dakota County) from approximately milepost (MP) 0.00 to MP 3.64 and western parts of Iowa (Woodbury County) from approximately MP 3.64 to MP 5.52.
Greenfield Tie-over Branch Line:
Northern proposes to construct and operate approximately 0.31 mile of a 20inch-diameter greenfield tie-over branch line that will begin at the aforementioned 20inch-diameter valve setting at the proposed meter station and extend east where it will tie in to Northern's existing 12-inch-diameter Terra Chemical branch line (1AB77301)
2
As depicted on drawing P3-Ic 1 (Figure 1-4), the C-line parallels itself within the same ROW for approximately
0.5 mile from its tie-in point on the existing C-line to G Avenue, where the proposed Homer compressor station will tie in to the extended C-line.
7

(Terra branch line) with a new valve setting. A short segment, approximately 14 feet, of the Terra branch line will be removed to accommodate the tie-in. The valve setting will be enclosed by a pipe guard and located within the limits of the permanent easement of the tie-over branch line. The valve site will measure approximately 20 feet by 20 feet and have a gravel surface. The proposed tie-over branch line and valve setting are located within Section 24, T87N, R48W, Woodbury County, Iowa.
COMPRESSION FACILITIES:
Homer Compressor Station
Northern proposes to construct and operate a greenfield compressor station in
Section 1, T27N, R8E, Dakota County, Nebraska. Plans include installation of four
Caterpillar model 3608 engines driving reciprocating compressors. The combined units have a site rating of 9,480 HP. The suction side of the compressor station will be connected to the proposed 24-inch-diameter C-line extension. The station will discharge to both the proposed 20-inch-diameter branch line and to the proposed C-line extension.
The proposed Homer compressor station includes the installation of a mainline block valve and actuator, suction and discharge side valves and actuators, discharge coalescing filters, station recycle valves, lube oil coolers, multiple blowdown silencers, exhaust systems, a backup generator, inlet air filters, a fuel gas conditioning skid, a fire/gas detection system, an air compressor and air dryer, a station transformer, a septic system, electrical pole(s), compressor and auxiliary buildings, storage tanks and associated above-grade and below-grade piping and valves. The compressor buildings
8

will contain noise-attenuating panels, insulation and inlet/exhaust hoods. A permanent driveway will be constructed to allow access to the compressor station site. Standard fencing, augmented with visual screening, will surround the perimeter of the station.
Northern will acquire an approximately 600-foot by 500-foot site for the new compressor station. A site plan of the compressor station and an aerial photograph of the compressor station depicting the location of noise sensitive areas (NSA) within a one-mile buffer are included as Figure 1-7 and Figure 1-8, respectively, in Resource
Report 1. The compressor station is also depicted on Alignment Sheet P3-I (Figure 1-4,
Resource Report 1). Due to the engineering specifics and building identification, the site plan has been designated and labeled CEll and segregated in Volume II.
In addition, Northern developed a screening plan which was reviewed and approved by the National Park Service. A copy of the screening plan is included as
Appendix 8A, Resource Report 8.
Fremont Compressor Station:
Northern proposes to construct and operate a greenfield compressor station in
Section 12, TI7N, R7E, Dodge County, Nebraska. Plans include installation of a Solar
Centaur 40S turbine driving a C40 series compressor with an ISO rating of 4,700 HP.
The station will be connected to Northern's existing C-line. A short segment of the C-line will be removed to accommodate the tie-in of the compressor station.
The proposed Fremont compressor station installation includes a mainline block valve and actuator, suction and discharge side valves and actuators, a station suction scrubber, a station recycle valve, a lube oil cooler, a blowdown silencer, an exhaust system, a backup generator, an inlet air filter, a fuel gas conditioning skid, a fire/gas
9

detection system, an air compressor and air dryer, a station transformer, electrical pole(s), compressor and auxiliary buildings and associated above-grade and belowgrade piping and valves. The compressor building will contain noise-attenuating panels, insulation and inlet/exhaust hoods. A new permanent driveway will be constructed to allow access to the compressor station. Standard fencing, augmented with visual screening, will surround the perimeter of the station.
Northern will acquire an approximately 627-foot by 300-foot site for the new compressor station. A site plan of the compressor station and an aerial photograph of the compressor station depicting the location of NSAs within a one-mile buffer are included as Figure 1-5 and Figure 1-6, respectively, in Resource Report 1. The compressor station also is depicted on an aerial photograph included as Figure 1-4 in
Resource Report 1. Due to the engineering specifics and building identification, the site plan has been labeled CEll and segregated in Volume II.
In addition, Northern developed a screening plan for the Fremont compressor station which is included as Appendix 8A, Resource Report 8.
METER STATION FACILITIES:
CF Industries Port Neal 2 Meter Station:
Northern proposes to construct and operate a meter station at the terminus of the proposed branch line in Section 24, T87N, R48W, Woodbury County, Iowa. The new meter station will include a meter, flow control valve and associated piping, fittings, valves and buildings. Northern proposes to acquire an approximately 100-foot by 100foot easement to accommodate the operation and maintenance of the new meter
10

station. The meter station will be accessed using customers roads and an existing driveway, which will have been constructed by the customer by the time construction activities commence for the meter station. Standard fencing will surround the perimeter of the station. The meter station plot plan is included as Figure 1-9 (Resource Report 1).
Due to the engineering specifics and building identification, the site plan has been labeled CEll and segregated in Volume II.
Miscellaneous
The location and design of all of the facilities described above are shown in more detail on U.S. 7.5-minute geological topographic maps (topo maps) and aerial alignment sheets/aerial photographs provided as Figure 1-2 and Figure 1-4, respectively, in
Resource Report I (Exhibit F-I), as well as Exhibits F and G, attached hereto. A detailed description of facilities to be constructed and construction activities also are included in Resource Report I. The estimated cost to construct the proposed Section 7 facilities described above is $70.9 million, as detailed in Exhibit K.
The proposed pipelines will be installed within a 100-foot-wide nominal3 construction corridor except for the construction of the parallel C-line extension and construction within wetlands where Northern will utilize a 125- and 75-foot-wide nominal construction corridor, respectively. In addition to the construction corridor, Northern will utilize extra temporary workspace, staging areas, contractor yards and pipe/storage yards. Access to the construction areas will be obtained from existing public roads and new and/or improved temporary access roads.
Nominal is an industry term that indicates the width of the construction ROW (temporary workspace) without additional construction workspaces.
11

Northern proposes to maintain a 50-foot-wide strip of ROW centered over the pipelines for the proposed 20-inch-diameter greenfield branch line and tie-over branch line and a 75-foot-wide strip for the parallel 24-inch-diameter C-line extension. Northern is working with the landowners to obtain permanent easements.
In addition to the facilities proposed in this application, Northern will also construct and/or modify facilities pursuant to (1) the automatic provisions of its blanket certificate granted in Docket No. CP82-401-000 4 and (2) Section 2.55(a) of the
Commission's regulations. These other facilities are not part of the Section 7 application but descriptions of these facilities are included within this application for informational purposes. These facilities include installation of a regulator setting on Northern's D-C pipeline north of Bushton (Ellsworth County, Kansas), modifications at Northern's
Tescott compressor station (Ottawa County, Kansas), header modifications at
Northern's Palmyra compressor station (Otoe County, Nebraska), installation of a regulator setting and modification of a branch line tie-over on Northern's Paulhna B-line
(Woodbury County, Iowa), reinforcement of the existing 16-inch-diameter A-line within the proposed Homer compressor station yard (Dakota County, Nebraska) and replacement of a control valve on Northern's Paullina C-line (Cherokee County, Iowa).5
These modifications are required for the Project and their construction will not result in changes in system capacity. The header modifications described will allow Northern to configure its system appropriately to manage the higher volumes that will be delivered to the customers. The Paulina C-line modifications are required for this Project to
Northern Natural Gas Company, 20 FERC ¶ 62,410 (1982).
With the exception of the A-line reinforcement, these modifications are scheduled for completion in 2013. The Aline reinforcement is scheduled to be completed in 2014.
12

manage pressure differentials between the pipeline north and south of the Pauhna compressor station. The Paulina station inlet pressures will be directly affected by the increased volumes to CF Industries.
The estimated cost of these facilities is $4.9 million; the total investment for the
Section 7 and ancillary projects totals $75.8 million. In order to provide a complete picture of the impact of the West Leg 2014 project, estimated facility costs and revenues for this entire project, including the Section 7 facilities proposed in this application and the facilities described above that will be constructed under the provisions of Northern's blanket certificate and Section 2.55(a) of the Commission's regulations, are included for analysis purposes in Exhibits N and P.
VI.
PUBLIC CONVENIENCE AND NECESSITY
The Certificate Policy Statement 6 explained that the Commission, in deciding whether to authorize the construction of major new pipeline facilities, balances the public benefits against the potential adverse consequences. Under its policy, the
Commission's threshold requirement for approval of new projects is that the pipeline must be prepared to financially support the project without relying on subsidization from its existing customers. The next step is to determine whether the applicant has made efforts to eliminate or minimize any adverse effects the project might have on the applicant's existing customers, existing pipelines in the market and their captive customers and landowners and communities affected by the route of the new pipeline. If
Certification of New Interstate Natural Gas Facilities (Certificate Policy Statement), 88 FERC ¶ 61,227 (1999),
order clarifying statement of policy, 90 FERC ¶ 61,128 (2000), order further clar'ing statement of policy, 92
FERC ¶ 61,094 (2000).
13

residual adverse effects on these interest groups are identified after efforts have been made to minimize them, the Commission will evaluate the project by balancing the evidence of public benefits to be achieved against the residual adverse effects. This is essentially an economic test. Only when the benefits outweigh the adverse effects on economic interests will the Commission proceed to complete the environmental analysis, where other interests are considered.
As illustrated in Exhibit N, the projected revenues exceed projected costs, thereby meeting the Commission's threshold requirement that existing customers will not be subsidizing the project. In addition, as indicated in Exhibit P, the proposed project will have a positive impact on rates for customers. Based on the data in Exhibit N and
Exhibit P, as well as additional pipeline reliability and flexibility provided to existing customers through the operational integration of Northern's existing facilities and the
Project facilities, Northern is proposing rolled-in rate treatment for the costs of the project. The data set forth in Exhibits N and P demonstrate that incremental revenues exceed the incremental cost of service and, therefore, existing customers will not be subsidizing the project proposed herein.
Northern designed the Project to minimize impacts to the environment, existing customers, existing pipelines in the market and their captive customers, landowners and communities. Although construction and operation of the project facilities will require new ROW, Northern selected the pipeline route and site locations to parallel road ROW, where possible, and minimize environmental impacts. As indicated earlier, Northern also worked with stakeholders during the pre-filing process to select routes/sites to alleviate stakeholder concerns and impacts to the environment. The proposed facilities
14

will be operated in an integrated manner with Northern's existing facilities, thereby providing additional pipeline reliability and flexibility for Northern's existing customers.
Further, construction activities will be conducted in accordance with Northern's
Upland Erosion Control, Revegetation, and Mitigation Plan and FERC's Procedures with the variances requested (Northern's Plan and Procedures).7
Finally, the Statement of Policy provides that a pipeline should indicate whether the need to construct additional facilities can be mitigated by measures such as capacity reallocation or released capacity. During the West Leg 2014 Expansion open season, Northern solicited the turn back of capacity on the West Leg segment of its pipeline system. Northern received no requests to turn back capacity.
Northern's instant proposal meets the Commission's threshold requirement set forth in its Policy Statement that Northern's customers not subsidize the project. Further, there are demonstrated public benefits without adverse effects on any of the interests identified in the Policy Statement. Therefore, Northern's proposal is clearly required and permitted by the public convenience and necessity.
VII.
MARKET DATA
Northern entered into precedent agreements with two shippers for service commencing November 1, 2014, and December 1, 2014. These commitments total an aggregated incremental peak winter entitlement of 88,430 Dth/d. The incremental entitlement will serve Northern's customers for industrial, commercial and residential use.
More specifically, approximately 99.5 percent, or 88,000 Dth/d, of the Project capacity
Northern's Plan and Procedures are based largely on the 2013 issuance of FERC's Upland Erosion Control,
Revegetation, and Mitigation Plan and FERC' s Procedures.
15

would be used by CF Industries, primarily as a raw material, rather than as a fuel, in the production of ammonia and granular urea. The remaining 0.5 percent, or 430 Dth/d, of the
Project capacity would be used by IPLC to meet growing energy demands for residential and commercial uses. This includes the delivery of natural gas to heat homes and businesses and to supply natural gas for appliance and machinery operation.
Northern understands that the shippers participating in the proposed project will have either acquired gas supplies or have ongoing negotiations for the acquisition of the gas supplies related to this Project. Northern exited the merchant business and, therefore, has not acquired gas supplies or made any commitments regarding supply acquisition or availability for this proposed Project. The primary sources of supplies for the additional capacity will be directly or indirectly connected to Northern's system. In the event upstream throughput services are required, Northern anticipates that each shipper will obtain such service and that it will be performed under Part 284 of the
Commission's Regulations.
VIII.
ENVIRONMENTAL
Northern engaged in the Commission's pre-filing process, conducted open houses for landowners and other stakeholders, and participated in teleconference calls with
Commission staff and cooperating agencies on a regular basis. Northern also provided
Commission staff with draft environmental reports, a draft applicant-prepared environmental assessment (EA), and communicated landowner and environmental issues prior to the submittal of this application.
16

The proposed facilities have been designed and will be constructed in a manner to minimize environmental impacts. An environmental report, submitted herewith as Exhibit
F-I, provides an analysis of the existing environmental conditions and the impact of the proposed facilities on the environment.
As previously stated, construction activities will be conducted in accordance with
Northern's Plan and Procedures, which are based largely on the 2013 issuance of FERC's
Plan and Procedures (see Appendix IA, in Resource Report I), so as to minimize environmental impacts. Alternative measures to the FERC's Procedures are outlined in
Resource Report I. Northern is requesting approval herein to incorporate these alternative measures in its construction procedures. The status of required environmental clearances and permits from the appropriate state and federal agencies is detailed in Table 1-13 in
Resource Report 1. A listing of federal authorizations that are required for the project and the status of these authorizations are provided in Exhibit J of this application. Agency and tribal correspondence, received to date, is included in the appendices of respective
Resource Reports. A copy of Phase I Cultural Resources Investigation Results and
Traditional Cultural Properties survey reports are included in Volume Ill. Due to the sensitive nature of the information related to cultural and historical properties discussed, the cultural resources/properties reports have been labeled "Privileged Information
Do Not Release" The proposed construction areas are more fully discussed in the resource reports (Exhibit F-i).
Topo maps and aerial alignment sheets/aerial photographs depicting the location of the proposed facilities and construction work areas are attached as Figure 1-2 and Figure
1-4, respectively, in Resource Report I. Aerial alignment sheets/aerial photographs
17

depicting cultural resources are also provided as Figure 1-4 in Resource Report 1; due to the sensitive nature of cultural resources depicted on the drawings, these documents have been labeled "Privileged Information --- Do Not Release" and are segregated in
Volume III.
The predominant land use impacted by the proposed Project is agricultural land.
Disruption of the agricultural lands should only occur during the construction phase, after which the surface will be restored pursuant to landowner agreements and
Northern's Plan and Procedures. Additional land use and construction mitigation measures are more fully described in Resource Report 8.
A list of the affected landowners is provided as Appendix IC (Resource Report 1) and has been segregated as privileged information in Volume Ill. A list of the federal and state agencies involved with the project is included in Appendix I B of Resource
Report 1. A listing of the project stakeholders including the newspapers and libraries located within the counties affected by the project is included as Appendix ID,
Resource Report 1. Pursuant to Section 157.6(d) of the Commission's regulations, within three business days following the date the Commission issues a notice of the application, Northern will mail a notice of the Project to affected landowners. Northern will use best efforts to ensure notice of the Project is published twice in the area newspapers within 14 days from the date a docket number is assigned to the application. In addition, in accordance with Section 157.10(c) of the Commission's regulations, a copy of the application will be available for public viewing at the applicable libraries.
18

Northern herein respectfully requests: (1) approval to construct and operate the compression, pipeline and meter station facilities with appurtenances as described herein;8
(2) approval for rolled-in rate treatment of the expansion costs; (3) approval to use the alternatives to FERC's Procedures described in Resource Report 1, attached to this application, and (4) that the Commission issue an order granting approval for the proposed facilities as expeditiously as possible, but no later than February 28, 2014, in order to commence construction activities as soon as practical to ensure an initial inservice date of November 1, 2014.
Northern is willing and able to complete the acts and perform the services for which application is herein made, and in so doing, to conform to the provisions of the NGA and the Regulations promulgated thereunder.
Pursuant to the provisions of the Natural Gas Pipeline Safety Act of 1968, Northern certifies that the facilities proposed herein will be designed, constructed, inspected, tested, operated, replaced, modified and maintained in accordance with the requirements of Title
49, Part 192 of the Code of Federal Regulations or any superseding state or federal safety code applicable to gas transmission pipelines.
As noted within this application, Northern will be constructing certain facilities pursuant to Section
Commission's regulations or under its blanket authority.
19
2.55(a) of the

This is an abbreviated application pursuant to Section 157 of the Regulations of the
Commission. For convenience purposes, Northern has addressed each of the exhibits required under Section
157.14 of said Regulations. These exhibits are attached, incorporated by reference, or omitted for the reasons indicated.
Submitted herewith.
Omitted. This information is filed at Docket No.
CP9I .-1680-000 as Exhibit A and incorporated herein for all purposes.
Omitted. This information is filed at Docket No.
CP9I-1680-.000 as Exhibit B and incorporated herein for all purposes.
Omitted. Information regarding Northern's company officials can be viewed on the following website: http://www.northernnaturalqas.com/aboutus/Paqes/Manaqe mentTeam .aspx
Omitted. Neither Northern, nor any of its officers or directors, directly or indirectly, owns, controls, or holds with power to vote, 10 percent or more of the outstanding voting securities of any other person or organized group of persons engaged in the production, transportation, distribution, or sale of natural gas, or of any person or organized group of persons engaged in the construction or financing of such enterprises or operations.
20

EXHIBIT E
EXHIBIT F
EXHIBIT F-I
EXHIBIT G
EXHIBIT G-I
EXHIBIT G-II
EXHIBIT H
EXHIBIT I
EXHIBIT
EXHIBIT K
OTHER PENDING APPLICATIONS AND FILINGS
Omitted. Northern is not aware of any pending applications on file with the Commission that affect the application.
LOCATION OF FACILITIES
Submitted herewith.
ENVIRONMENTAL REPORT
Submitted herewith.
FLOW DIAGRAMS SHOWING DAILY DESIGN CAPACITY
Submitted herewith in Volume II.
FLOW DIAGRAMS SHOWING MAXIMUM CAPABILITIES
Omitted. Exhibit G reflects maximum capacities.
FLOW DIAGRAMS DATA
Submitted herewith in Volume II.
GAS SUPPLY
Omitted. Northern understands that participating shippers will either acquire gas supplies or have ongoing negotiations for the acquisition of gas supplies related to this Project.
MARKET DATA
Submitted herewith are precedent agreements executed by
Northern's customers for this Project.
FEDERAL AUTHORIZATIONS
Submitted herewith.
COST OF FACILITIES
Submitted herewith.
21

Omitted. The proposed construction will be financed with internally generated funds.
Omitted. Northern and/or independent contractors will accomplish the proposed construction. Employees of
Northern will carry out operation and maintenance activities during the ordinary course of business.
Submitted herewith.
Omitted. Northern will depreciate the facilities at the rate in effect, from time to time, as approved by the Commission.
Submitted herewith. The rates agreed to in the expansion contracts are negotiated rates that will be filed with the
Commission prior to the effective date of the service.
issue, pursuant to Section 7 of the NGA, a certificate of public convenience and necessity to construct and operate compression, pipeline and meter station facilities, with appurtenances, in order to expand the capacity of Northern's facilities on its West Leg, and that the Commission approve the alternative methods to the FERC's Procedures as set forth herein. Northern also requests approval for rolled-in rate treatment.
Northern further requests that the intermediate decision procedure be omitted and that this application be disposed of pursuant to Rules 801 and 802 of the Commission's
22

Rules of Practice and Procedure (18 CFR § 385.801 and 385.802) providing shortened procedures for non-contested proceedings. If the Commission grants such request,
Northern waives oral hearing and opportunity for filing exceptions to the decision of the
Commission.
Respectfully submitted,
NORTHERN NATURAL GAS COMPANY
Michael T. Loeffler, Senior Director of
Certificates and External Affairs
23

In the Matter of
NORTHERN NATURAL GAS COMPANY
§
§ Docket No. CPI 3- -000
§
Take notice that on , 2013, Northern Natural Gas Company (Northern), 1111
South 103rd Street, Omaha, Nebraska 68124, filed in Docket No. CPI3- -000 an application pursuant to section 7 of the Natural Gas Act and Part 157 of the Commission's
Regulations thereunder, requesting approval to construct and operate certain compression, pipeline and meter station facilities, with appurtenances, located in Nebraska and Iowa, all as more fully set forth in the request which is on file with the Commission and open to public inspection. This filing may also be viewed on the web at www.ferc.fed.qov
using the "ELibrary" link, select "Docket #" and follow the instructions (call 202-208-2222 for assistance).
In its application, Northern asserts that the installation of the proposed facilities will allow Northern to serve up to 88,430 Dth/day of incremental peak day entitlement by winter 2015. The proposed facilities will be placed in service November 1, 2014
Northern also states that the proposal herein is a result of an analysis conducted following an open season soliciting interest for firm transportation service for deliveries to the West
Leg of Northern's Market Area system for service on or after November 1, 2014. The estimated capital cost for the facilities proposed herein is $70,880,412.

Any questions regarding this application should be directed to Michael T. Loeffler,
Senior Director, Certificates and External Affairs for Northern,
South 103rd Street,
Omaha, Nebraska 68124, at (402) 398-7103, or Donna Martens, Senior Regulatory
Analyst, at (402) 398-7138.
There are two ways to become involved in the Commission's review of this project.
First, any person wishing to obtain legal status by becoming a party to the proceedings for this project should, on or before ,2013, file with the Federal Energy Regulatory
Commission, 888 First Street, N.E., Washington, D.C. 20426, a motion to intervene in accordance with the requirements of the Commission's Rules of Practice and Procedures
(18 CFR § 385.211 or 385.214) and the Regulations under the NGA(18 CFR § 157.10).
A person obtaining party status will be placed on the service list maintained by the
Secretary of the Commission and will receive copies of all documents filed by the applicant and by all other parties. A party must submit 14 copies of filings made with the
Commission and must mail a copy to the applicant and to every other party in the proceeding. Only parties to the proceeding can ask for court review of Commission orders in the proceeding.
However, a person does not have to intervene in order to have comments considered. The second way to participate is by filing with the Secretary of the
Commission, as soon as possible, an original and two copies of comments in support of or in opposition to this Project. The Commission will consider these comments in deeming the appropriate action to be taken, but the filing of a comment alone will not serve to make the filer a party to the proceeding. The Commission's rules require that persons filing

comments in opposition to the Project provide copies of their protests only to the party or parties directly involved in the protest.
Persons who wish to comment only on the environmental review of this project should submit an original and two copies of their comments to the Secretary of the
Commission. Environmental commenters will be placed on the Commission's environmental mailing list, will receive copies of the environmental documents, and will be notified of meetings associated with the Commission's environmental review process.
Environmental commenters will not be required to serve copies of filed documents on all other parties. However, the non-party commenters will not receive copies of all documents filed by other parties or issued by the Commission (except for the mailing of environmental documents issued by the Commission) and will not have the right to seek court review of the Commission's final order.
Comments, protests and interventions may be filed electronically via the Internet in lieu of paper. See, 18 CFR § 385.2001(a)(1)(iii) and the instructions on the
Commission's website under the "e-Filing" link.
If the Commission decides to set the application for a formal hearing before an
Administrative Law Judge, the Commission will issue another notice describing that process. At the end of the Commission's review process, a final Commission order approving or denying a certificate will be issued.
Kimberly D. Bose,
Secretary

Legend
Proposed Aboveground Facilities
- Proposed Expansion
Existing Pipeline

E^

EXHIBIT G-II
- liwl ii !1C1 .i I I1I fi

- -
I

ContraôtNo, L2Lll_(o(9 2 0
PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND -4Lki
This Precedent Agreement dated as of this r, day of agreement between Northern Natural Gas Company and
2012, evidences the
(Customer), upon fulfillment of the conditions precedent set forth herein, to enter into a firm throughput service agreement as further described below (Finn Throughput Service Agreement) under which Northern proposes to provide firm transportation service for Customer upon
Northern's installation of certain facilities as necessary. Snch facilities are part of Northern's
West Leg 2014 Project (Project).
Before Northern can proceed with the Project by ordering critical materials and applying for regulatory approvals and peirnits to expand the facilities, Northern must have sufficient interest in the Project as expressed through binding commitments. Accordingly, Northern desires to memorialize the commitments from customers who are interested in using the proposed expansion capacity on a firm basis,
In consideration of the above, Northern and Customer hereby agree as follows:
Northern and Customer will enter into a Firm Throughput Service Agreement consistent with
Northern's TFX Rate Schedule, or any successor firm transportation late schedule then in effect, The Firm Throughput Service Agreement shall provide for the transportation of natural gas owned by Customer from the primary point(s) of receipt to the primary point(s) of delivery set forth in Appendix A, attached hereto and incorporated herein.
2. The Firm Throughput Service Agreement shall be effective November 1, 2014, subject to any necessary regulatory approvals, and acceptance of such approvals, if necessary, and the completion of any Northern facilities necessary to provide the service and shall have a term as set forth in Appendix A.

3. The transportation rates to he paid by Customer to Northern under the Firm Throughput
Service Agreement shall be set forth in Appendix A.
4. The maximum daily quantity of transportation service to be provided by Northern under the
Firm Throughput Service Agreement (Entitlement or MDQ) shall be as set forth on
Appendix A. Provided however, (a) in the event Northern must allocate the available quantity among customers executing precedent agreements, Northern will indicate on
Appendix A the resulting allocated quantity; or (h) if FBRC modifies the Entitlement set forth on Appendix A and/or the entitlement quantities, in whole or in part, agreed to by
Northern with customers executing precedent agreements related to the Project, the
Entitlement set forth in Appendix A may be modified to conform to the PERC's decision. In the event such modification results in a material impact to Customer's ability to serve a significant portion of its intended market, Northern will promptly notify Customer and
Customer may terminate its obligation with respect to the applicable Entitlement within ten
(10) business days following notification by Northern. In the event any customer terminates its Precedent Agreement, any remaining quantities may be reallocated among the other customers,
S.'Subject to the provisions hereof, and upon Northern's receipt of all approvals from federal, state, locaI and/or municipal agencies or other governmental authorities, Northern will install the facilities necessary to provide the firm natural gas transportation service and to perform its obligations contemplated in this Precedent Agreement. Northern will proceed with due diligence to obtain all such approvals. Stipulations regarding the Northern and Customer facilities associated with the service to be provided pursuant to this Precedent Agreement are described in Appendix B, attached hereto and incorporated herein Customer shall support any filing made by Northern to secure any necessary approvals.
6. This Precedent Agreement and the Firm Throughput Service Agreement are subject to all of the terms and conditions of Northern's FERC Gas Tariff, as revised from time to time
(Northern's PERC Gas Tarift, and all valid laws, rules and regulations of duly constituted governmental authorities having jurisdiction.
7, it is expressly understood that a condition precedent to the Firm Throughput Service
Agreement being effective is that all necessary governmental approvals shall be in a form and substance satisfactory to Northern, and shall be final before the respective governmental
Page 2

authority and no longer subject to appeal or rehearing before such governmental authority unless Northern waives the requirement that the approval be final. In the event Northern exercises its right not to accept an approval, it does so without liability or further obligation to Customer.
S. In exchange for the consideration received hereunder, including without limitation the expected revenue stream from the Firm Throughput Service Agreement, Northern is willing to make tho capital expenditures for the construction of the contemplated facilities however, in the event the Entitlement under the Firm Throughput Service Agreement is, for any reason, in whole or in part, (1) reduced (including in the instance of a permanent capacity release, but not o temporary capacity release), or (ii) realigned away from the primary delivery point(s) identified in Appendix A, except when Customer has provided a
Contribution in Aid of Construction for an amount equal to 100 1/oot Customer's allocated share of the capital requirements, Customer shall promptly pay to Northern an amount equal to the Actual Cost of the Project. Actual Cost shall he Customer's allocated share of the actual cost of the Project, including, but not limited to, income tax gross-up, Allowance for
Funds Used During Construction (AFLJDC) and overheads. Provided Customer is not in default of its obligations, insolvent or under the protection of applicable bankruptcy laws, the
Actual Cost due and owing to Northern and described in the preceding sentence shall be reduced by an amount equal to (1) the revenue from the Agreed-Upon Reservation Rate or the Negotiated Reservation Rate, both as defined in Appendix A, as applicable, (Reservation
Revenue) collected prior to the event of reduction or realignment divided by the total
Reservation Revenue associated with the term of the Firm Throughput Service Agreement for the MDQ effective upon the date of the Finn Throughput Service Agreement, multiplied by (2) the Actual Cost. The reduced Actual Coal shall hereinafter he referred to as the
Customer's Remaining Facilities Cost Obligation. This provision earl the obligations herein shall survive the release of the capacity in the Firm Throughput Service Agreement or any assignment of this Precedent Agreement or the Firm Throughput Service Agreement and
Customer shall continue to be obligated for the reimbursement of the Actual Cost unless
Northern consents in writing to the release or assignment and the obligation is expressly assumed by an acquiring shipper that complies with the credit provisions in Novthern's
FERC (las Tan If.
9. Creditworthiness and security requirements are described in Appendix C, attached hereto and incorporated herein.
Page 3

10. Except as to the interpretation, applicability, or enforcement of this Precedent Agreement before a trier of fact or as may be required by an administrative or judicial action, Customer shall not directly or indirectly reveal this Thecedent Agreement or the terms and conditions thereof to any other customer or potential customer of Northern.
II This Precedent Agreement may be signed in counterparts, each of which when signed shall be an original, but all of which shall together constitute one and the same instrument.
12. AS TO ALL MATTERS OF CONSTRUCTION AND INTERPRETATION, THIS
PRECEDENT AGREEMENT SHALL BE INTERPRETED, CONSTRUED AND
GOVERNED BY THE LAWS OF THE STATE OF NEBRASKA WITHOUT REGARD
TO CONFLICT OF LAW PROVISIONS.
13.TO THE FULLEST EXTENT PERMITTED BY LAW, BACI-I OF THE PARTIES
HERETO WAWES ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY WITH
RESPECT TO LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER
OR IN CONNECTION WITH, THIS AGREEMENT, EACH PARTY FURTHER WAIVES
ANY RIGHT TO CONSOLIDATE ANY ACTION IN WHICH A JURY TRIAL HAS
BEEN WAIVED WITH ANY OTHER ACTION IN WHICH A JURY TRIAL CANNOT
BE OR HAS NOT BEEN WAIVED.
14.Subject to the terms and conditions of this Precedent Agreement, Customer hereby agrees to execute the Firm Throughpi,a Service Agreement within thirty (30) calendar days of tender by Northern.
15. Northern shall have the right prior to Northern's execution of the Firm Throughput Service
Agreement to terminate this Precedent Agreement and to withdraw any requests or applications for governmental approvals if Northern, in its sole discretion, determines that the project economics or other related economic impacts to Northern are unacceptable, in the event Northern exercises this right, it does so without liability or firther obligation to
Customer.
16. Upon execution of the Firm Throughput Service Agreement by both parties, Paragraphs 1, 3,
4, 14, and 15, and Appendix A of this Precedent Agreement will expire and be superseded by the Firm Throughput Service Agreement. Paragraphs 2, 5 and 7 of this Precedent Agreement will then continue in effect until the effective date of service under the Firm Throughput
Page 4

Service Agreement at which time they will expire, unless there has been a prior breach of one or more of such paragraphs, in which case such paragraphs will remain in effect until the breach has been resolved, All remaining paragraphs and Appendix C of this Precedent
Agreement will survive until all obligations or responsibilities under this Precedent
Agreement and the Firm Throughput Service Agrernent have been fully satisfied. Appendix
B will remain in effect for the life of the facilities.
17.Any document generated by the parties with respect to this Precedent Agreement including this Precedent Agreement, may be imaged and stored electronically (Imaged Documents).
Imaged Documents may be introduced as evidence in any proceeding as if such were original business records and neither party shall contest the admissibility of Imaged Documents as evidence in any proceeding.
18.Any company which shaU succeed by purchase, merger or consolidation to the properties, substantially as an entirety, of any party shall he subject to the obligations of its predecessor in title. No other assignment of this Precedent Agreement or any of the rights or obligations hereunder shall be made unless there first shall have been obtained the consent thereto of the non-assigning party. Such consent shall not be unreasonably withheld. Any party may assign its respective right, title and interest in and to and under this Precedent Agreement to a trustee or trustees, individual or corporate, as security for bonds or oilier obligations or securities. Such assignment shall not obligate assignee in any respect to perform the obligations of the assignor under this Precedent Agreement.
19, Customer's failure to comply with the terms contained in the Firm Throughput Service
Agreement, the IPX Rate Schedule, the General Terms and Conditions of Northern's FERC
Gas Tariff and/or this Precedent Agreement shall be a bieah and shall constitute a default under this Precedent Agreement. In the event of a default, Northern shall have all rights granted to it at law or in equity, including those contained in Northern's FERC Gas Tariff,
No provision herein shall act to limit any relief or damages that may be available to the parties in the event of a breach of this Precedent Agreement or the Firm Throughput Service
Agreement,
)t114>-
ZO
20. If Northern has not executed this Precedent Agreement within AW days of the close of the
Open Season, this Precedent Agreement shall be null and void and of no further force or effect.
Page 5

21. Notwithstanding any other provision herein to the contrary, in order for Northern to evaluate the commitments that customers are willing to make and thus determine the feasibility of the
Project, and the engineering design and size of any expansion facilities, Northern is seeking a commitment from customers through precedent agreements similar to this Precedent
Agreement, Additionally, these commitments will enable Northern to allocate capacity, if necessary, among customers who have signed such precedent agreements. Accordingly,
Customer recognizes and acknowledges that, although Customer is obligated by this
Precedent Agreement upon its execution and delivery to Northern, said agreement and the terms and conditions herein shall be of no force and effect on Northern and Northern will have no obligations whatsoever under this Precedent Agreement until it is executed by
Northern.
The parties hereto have executed this Precedent Agreement to indicate their acceptance.
O f Northern Natural Gas Company
By:
At
\L
Title:
By:
Title:
Date: Date: (
Paged

PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
1EPoi4
+
APPENDIX A menL Firm ThroudiTut
Rate Schedule: TPX
Contract Term: through
Quantities and Points: (to he provided by Customer)
Tho contract MDQ is tJ/Dth/day j c p t jo In t
I
Delivery Point
I
Volume
C-
N
T
I 70
Notes
I) The volumes shown are firm maximum daily quantities (MDQ or Entitlement.
Allocatedpatititi:toterovided by N orth ern) fit Pint
I
DevryjnJ Vohimo
Notes
1) The volumes shown are firm maximum daily quantities MDQ or Entitlement).
Page 7

Customer shall pay the maximum reservation rate provided in Northern's FERC Gas Tariff as revised from date to time, unless a lower rate is agreed to (Agreed-Upon Reservation Rate. in addition, Customer shall pay Northern's maximum commodity rate, as revised from time to time, and all current and future applicable reservation and commodity surcharges. Customer shall provide fuel use and unaccounted-for as provided in Northern's FERC Gas Tariff.
If the Agreed-Upon Reservation rate is lower than the maximum rate in Northern's PERC Gas
Tariff, the Agreed-Upon Reservation Rate is applicable to all Market Area Receipt Points and the delivery point(s) listed above. If any other points are used either on a primary or alternate basis, Including use by any shipper acquiring the capacity through capacity release, the Agreed-
Upon Reservation Rate
Will not be applicable and Northern's maximum rates will apply to the entire contract MDQ for the month that any points not listed above are used.
Reimbursement for the Construction of Facilities:
Customer must make its rate election prior to the execution of any Firm Throughput Service
Agreement.
OPTION A -
Customer may elect to pay a negotiated reservation rate equal to the Agreed-Upon Reservation
Rate plus an amount that will recover the cost of the facilities (Negotiated Reservation Rate).
Northern will notify Customer of the Negotiated Reservation Rate to be paid. The Negotiated
Reservation Rate is subject to change based on the Actual Cost (excluding tax gross-up), including changes resulting from other customers' participation in the Project. Northern shall notify Customer of any change to the Negotiated Reservation Rate required for Northern to construct the facilities and provide the natural gas transportation service. If the revised
Negotiated Rate is greater than $0.6000/Dthfday, Customer may terminate this Precedent
Agreement following the notice of the rate or as a result of any increase in rates by providing written notice to Northern within five (5) business days of the date of Northern's notice to
Customer. If Customer fails to provide such notice to terminate, the Negotiated Reservation Rate set forth in Northern's notice to Customer shall be deemed effective.
Page 8

OPTION B
As an alternative to paying the Negotiated Reservation Rate, in addition to the Agreed-Upon
Reservation Rate, Customer shall provide a Contribution in Aid of Construction (CIAC) as set forth in Appendix B attached hereto.
Other Terms
Customer may agree to limit hourly takes of natural gas down to less than or equal to 4.167
percent (4.167%) of the Entitlement (1/24 of the MDQ) at the primary delivery point(s) and any alternate delivery points. (including those used under capacity release) during the term of the
Firm Throughput Service Agreement.
The Entitlement is subject to the Right of First Refusal as described in Sectioit 52 of Northern's
FBRC Gas Tariff.
Northern and Customer may agree to other terms specific to the facilities or service provided pursuant hereto.
Page 9

PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
__ (
APPENDIX B
Facilities
Northern Facilities
Northern andlor itslesign e will retain ownership of, operate and maintain the facilities required to provide the transportation service to Customer at the primary delivery points listed in the Firm
Throughput Service Agreement. Northern shall indemnify and hold Customer, including its officers, directors, employees and agents, harmless from and against any and all claims arising out of the design, construction, ownership, operation and maintenance of Northern's facilities,
Northern's facilities shall be designed, constructed, operated and maintained by Northern in accordance with applicable industry standards and codes, including AGA design standards.
Customer Facilities
Customer will provide, own, operate and maintain all gas service equipment (including valves, pressure regulators, odorization equipment and other facilities) required beyond the point of delivery (the flange on Northern's outlet valve of the delivery point). Customer is responsible for providing over-pressure protection equipment for its facilities. Customer shall indemnify and hold Northern and Northern's affiliates, including their officers, directors, employees and agents, harniless from and against any and all claims arising out of the design, construction, ownership, operation and maintenance of Customer's facilities and the receipt by Customer of gas at
Northern's pressure. Customer represents and, warrants to Northern that it has the knowledge and expertise, and its employees, agents and contractors are qualified to design, construct and operate the gas service equipment required beyond the point of delivery including specifically, but not by way of limitation, the receipt of gas from Northern at Northern' pressure.
Customer's facilities shall be designed, manufactured, fabricated, constructed, installed, operated, tested and maintained by Customer in accordance with applicable industry standards and codes (including AGA design standards).
Page 1.0

Contribution in Aid of Construction, if' pp licable Northern will notify
Customer of the amount of the CIAC which shall be based oil estimate of the Actual Cost (Estimated Cost).
One hundred percent (100%) of the CIAC irnist be received by Northern within ten (10) days of
Northern's request, Upon completion of the construction, If
Actual Cost exceeds the estimated costs, Customer shall pay to Northern the difference between the Estimated Cost and the Actual
Cost. If the Actual Cost is less than the Estimated Cost, Northern shall refund the difference between the Estimated Cost and the Actual Cost. In the event the project is terminated prior to completion for any reason, not solely caused by Northern, Northern shall retain an amount equal to its costs reasonably inoutred,
Page II

PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
APPENDIX C
Securityçjrepwits if, at any time after the execution of this Precedent Agreement including during the term of any
Firm Throughput Service Agreement entered into pursuant to this Precedent Agreement,
Customer is not creditworthy as determined under the provisions of Northern's FERC Gas Tariff,
Customer agrees to provide, upon written request from Northern, (i) a payment guarantee acceptable. to Northern of all Customer's obligations to Northern, or (ii) security as described below:
The amount of security shall be equal to (i) the Actual Cost of facilities, and (ii) an amount equal to the highest three (3) months or reservation charges under the Firm Throughput Service
Agreement.
The amount of security associated with the Actual Cost of any non-mainline facilities constructed may be in a form consistent with the types of security set forth in Section 46(a) of
Northern's FERC Gas Tariff (e.g., cash or a letter of credit acceptable to Northern). The amount of security associated with the Actual Cost of any mainline facilities constructed shall be in the form of a letter of credit acceptable to Northern,
If Customer is not creditworthy, Northern shall provide written notice to Customer of the amount of the security associated with the cost of construction, and the date(s) such security is due. The amount shall he the Actual Cost of the facilities or, if the facilities have not been constructed,
Northern's estimate of the Actual Cost of the facilities. Upon completion of the Project, if
Customer's Actual Cost is lower than the security provided, Northern will reduce the security associated with the cost of construction to equal the Actual Cost. In the event the Actual Cost is higher than the security provided, Customer agrees to increase its security associated with the cost of construction with Northern for the difference between the Actual Cost and the security associated with the cost of construction. If the security is required after the effective date of the
Page 12

Firm Throughput Service Agreement, such security shall be equal to Customer's Remaining
Facilities Cost Obligation as determined pursuant to Paragraph 8 of this Precedent Agreement
If Customer: (i) performs in accordance with the Firm Throughput Service Agreement including making all payments required when due and (ii) has not reduced or realigned its firm
Entitlement as listed in the Firm Throughput Service Agreement on the effective date of the Firm
Throughput Service Agreement, Northern shall reduce, on each annual anniversary of the effective date of the service on the Firm Throughput Service Agreement through the term of such agreement, the portion of the security requirement equal to the cost of the mainline facilities by an amount equal to (1) the Reservation Revenue collected during the year, divided by the total
Reservation Revenue associated with the MDQ of the Firm Throughput Service Agreement effective upon the date of the Firm Throughput Service Agreement, multiplied by (2) the Actual
Cost of the mainline facilities. The obligation of Northern to reduce such security shall be subject to the right of Northern to recoup and/or setoff all or any part of the security against any obligations or claims whatsoever Owing to Northern from Customer.
The portion of the security equal to the cost of the non-mainline facilities shall not be reduced until the end of the initial primary term of the Firm Throughput Service Agreement,
In the event any or all of the Entitlement is reduced or realigned, in whole or in part, prior to the end of the term of the Firm Throughput Service Agreement for any reason not caused solely by
Northern, Customer shall pay to Northern the balance of Customer's Remaining Facilities Cost
Obligation. If at that time Northern is holding security, Customer waives any and all claims to the balance of the security held by Northern and agrees that such balance will be retained by
Northern and applied as a credit toward the payment for the Customer's Remaining Facilities
Cost Obligation and any other amounts due from Customer.
Failure to remit in full all security by the due dates set forth in Northern's notice shall be considered a breach of this Precedent Agreement and the Firm Throughput Service Agreement and may, at the discretion of Northern, result in the termination of Northern's obligations under this Precedent Agreement and the Firm Throughput Service Agreement Upon any default under this Precedent Agreement or the Firm Throughput Service Agreement, Northern may pursue any remedy available at law,
The security shall be owned and held by Northern for its sole and exclusive benefit until the earlier of such time as (i) Customer has satisfied in full all of its obligations under this Precedent
Page 13

Agreement and the Firm Throughput Service Agreement, or (ii) Customer becomes creditworthy. Customer acknowledges that the security is subject to the light of Northern to recoup and/or setoff all or any part of the security as to any obligations or claims, whether under the Finn Throughput Service Agreement and this Precedent Agreement or otherwise, owing to
Northern from Customer including Customer's Remaining Facilities Cost Obligation.
The security Will be owned and held by Northern, and Customer's sole interest in the security shall be a residual interest, if any, remaining after all of Customer's obligations under the Firm
Throughput Service Agreement and this Precedent Agreement are satisfied to full. If security is provided in the form of a Letter of Credit, Customer shall have no interest in the Letter of Credit or its proceeds.
No security will be required during any period of time that Customer establishes and maintains creditworthiness pursuant to Northern's FERC Gas Tariff,
Page 14

Contract No, 601574-0
PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
Cl? INDUSTRIES, INC
This Precedent Agreement dated as of this
5Ih (lay of November 2012, is between Northern
Natural Gas Company (Northern) and CF Industries, Inc. (Customer), a wholly owned subsidiary of CF industries Holdings, Inc. (CF Holdings), Customer is planning an expansion of its Port
Neal complex in Sergeant Bluff, Iowa. In order for Northern to be ready to provide firm natural gas transportation service to meet Customer's proposed in-service date of November 1, 2014,
Northern must begin the process to receive Federal Energy Regulatory Commission (FBRC) authorization for the construction of the facilities necessary to provide the firm transportation
This Precedent Agreement evidences the agreement between the parties, upon fulfillment of the conditions precedent set forth herein, to enter into a firm throughput service agreement as further described below (Firm Throughput Service Agreement) under which
Northern proposes to provide firm transportation service for Customer upon Northern',,,, installation of certain facilities as necessary. The facilities to be constructed will be part of
Northern's West Leg 2014 Project (Project).
Northern and Customer will enter into a Firm Throughput Service Agreement consistent with
Northern's TFX Rate Schedule, or any successor firm transportation late schedule then in effect, The Firm Throughput Service Agreement shall provide for the transportation of natural gas owned by Customer from the primary point(s) of receipt to the primary point(s) of delivery set forth in Appendix A, attached hereto and incorporated herein. Customer agrees that this Precedent Agreement shall be included in any open season required for the
Project.
2. The Firm Throughput Set-vice Agreement shall have an effective date and term as set forth in
Appendix A, subject to any necessary regulatory approvals, and acceptance of such

approvals, if necessary, and the completion of any Northern facilities necessary to provide the service,
3 The transportation rates to be paid by Customer to Northern under the Firm Throughput
Service Agreement shall be as set forth in Appendix A.
4, The maximum deity quantity of transportation service to be provided by Northern under the
Firm Throughput Service Agreement (Entitlement or MDQ) shall be as set forth in Appendix
A.
S. Subject to the provisions hereof, and upon Northern's receipt of all approvals from federal, state, local, and/or municipal agencies or other governmental authorities, Northern will install the facilities necessary to provide the trm natural gas transportation service and to perform its obligations contemplated in this Precedent Agreement. Northern will with due diligence to obtain all such approvals. Stipulations regarding the Northern and Customer facilities associated with the service to be provided pursuant to this Precedent Agreement are described in Appendix B, attached hereto and incorporated herein. Customer shall support any filing made by Northern to secure any necessary approvals.
6. This Precedent Agreement and the Firm Throughput Service Agreement are subject to all of the terms and conditions of Northern's FERC Gas Tariff, as revised from time to time
(Northern's FERC Gas Tariff), and all valid laws, rules and regulations of duly constituted governmental authorities having jurisdiction
7. It is expressly understood that a condition precedent to the Firm Throughput Service
Agreement being effective is that all necessary governmental approvals shall be in a form and substance satisfactory to Northern, and shall be Final before the respective governmental authority and no longer subject to appeal or rehearing before such governmental authority unless Northern waives the requirement that the approval be fInal. In the event Northern exercises its right not to accept an approval, it does so without liability or further obligation to Customer,
8, In exchange for the consideration received hereunder, including without limitation the expected revenue stream from the Firm Throughput Service Agreement, Northern is willing to make the capital expenditures for the construction of the contemplated facilities; however, in the event the Entitlement under the Firm Throughput Service Agreement is, pursuant to
Page 2

Northern's I? ERC Gas Tariff, (i) reduced by Customer (including in the instance of a permanent capacity release, but not a temporary capacity release), or (ii) realigned by
Customer away from the primary delivery point(s) identified in Appendix A, Customer shall promptly pay to Northern an amount equal to the Actual Cost of the Project. Actual Cost shall be Customer's allocated share of the actual cost of the Project, including, but not limited to, income tax gross-up, Allowance for Funds Used During Construction (AFUDC) and overheads, including, if applicable, an estimate of the Actual Cost if, and to the extent, the Project is not complete. Provided Customer is not in default of its obligations, insolvent or under the protection of applicable bankruptcy laws, the Actual Cost due and owing to
Northern and described in the preceding sentence shall he reduced by an amount equal to
(I) the revenue from the Agreed-Upon Reservation Rate, as defined in Appendix A
(Reservation Revenue), collected prior to the event of reduction or realignment, divided by the total Reservation Revenue associated with the term of the Firm Throughput Service
Agreement for the MDQ effective upon the date of the Firm Throughput Service Agreement, multiplied by (2) the Actual Cost, The reduced Actual Cost shall hereinafter be referred to as the Customer's Remaining Facilities Cost Obligation, This provision, and the obligations herein, shall survive the release of the capacity in the Firm Throughput Service Agreement or any assignment of this Precedent Agreement or the Firm Throughput Service Agreement and
Customer shall continue to be obligated for the reimbursement of the Actual Cost unless
Northern consents in writing to the release or assignment and the obligation is expressly assumed by an acquiring shipper that satisfies the creditworthiness requirements in
Northern's FERC Gas Tariff.
9. Creditworthiness and security requirements are described in Appendix C, attached hereto and incorporated herein.
10. Except as to the interpretation, applicability, or enforcement of this Precedent Agreement before a trier of fact or as may be required by an administrative or judicial action, Customer shall not directly or indirectly reveal this Precedent Agreement or the terms and conditions thereof to any other customer or potential customer of Northern.
11, This Precedent Agreement may be signed in counterparts, each of which when signed shall be an original, but all of which shall together constitute one and the same instrument
11 AS TO ALL MATTERS OF CONSTRUCTION AND INTERPRETATION, THIS
PRECEDENT AGREEMENT SHALL BE INTERPRETED, CONSTRUED AND
Page 3

GOVERNED BY THE LAWS OF THE STATE OF NEBRASKA WITHOUT REGARD
TO CONFLICT OF LAW PROVISIONS,
13.T0 THE FULLEST EXTENT PERMITTED BY LAW S EACH OF TilE PARTIES
HERETO WAIVES ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY WITH
RESPECT TO LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER
OR IN CONNECTION WITH, THIS AGREEMENT, EACH PARTY FURTHER WAIVES
ANY RIGHT TO CONSOLIDATE ANY ACTION IN WHICH A JURY TRIAL HAS
BEEN WAIVED WITH ANY OTHER ACTION IN WHICII. A JURY TRIAL CANNOT
BE OR HAS NOT BEEN WAIVED,
14, Subject to the terms and conditions of this Precedent Agreement, Customer hereby agrees to execute the Firm Throughput Service Agreement within thirty (30) calendar days of tender by Northern. Northern shall not tender the Firm Throughput Service Agreement prior to
(I) April 1, 2013, and (2) Customer's receipt of final approval from its board of directors as set forth in Paragraph 16 below,
15. Northern shall have the tight prior to Northern's execution of the Firm Throughput Service
Agreement, but in no event later than April 1, 2013, to terminate this Precedent Agreement and to withdraw any requests or applications for governmental approvals if Northern in good faith determines, based on changes iii facts and circumstances from those existing as of the date of this Precedent Agreement, that the project economics or other related economic impacts to Northern are unacceptable. I.n the event Northern exercises this right, it does so without liability or further obligation to Customer,
16. Customer shall have the right to terminate this Precedent Agreement if it (toes not receive final approval from its board of directors for nny reason by providing to Northern written notice to terminate in the form attached hereto as Appendix D no later than April 1 2013. in the event Customer exercises this right, it does so without liability or further obligation to
Northern.
17, Upon execution of the Firm Throughput Service Agreement by both parties, Paragraphs 1, 3,
4, 14,15 and 16, and Appendix A of this Precedent Agreement will expire and be superseded by the Firm Throughput Service Agreement, Paragraphs 2, 5 and 7 of this Precedent
Agreement will then continue in effect until the effective date of service under the Firm
Throughput Service Agreement at which time they will expire, unless there has been a prior
Page 4

breach of one or more of such paragraphs, in which case such paragraphs will remain in effect until the breach has been resolved. All remaining paragraphs and Appendix C of this
Precedent Agreement will survive until all obligations or responsibilities under this Precedent
Agreement and the Firm Throughput Service Agreement have been fully satisfied, Appendix
B will remain in effect for the life of the facilities,
18, Any document generated by the parties with respect to this Precedent Agreement ) including this Precedent Agreeinnt, may be imaged and stored electronically (Imaged Documents).
Imaged Documents may be introduced as evidence in any proceeding as if such were original business records and neither party shall contest the admissibility of imaged Documents as evidence in any proceeding.
19. Any company which shall succeed by purchase ) merger or consolidation to the properties, substantially as an entirety, of any party shall be subject to the obligations of its predecessor in title. No other assigmuent of this Precedent Agreement or any of the rights or obligations hereunder shall be made unless there first shall have been obtained the consent thereto of the non-assigning party, such consent not to be unreasonably withheld; provided, however, that
Customer may assign this Precedent Agreement or any of its rights or obligations hereunder, without Northern's consent to a direct or indirect wholly-owned subsidiary of CF Holdings, provided that the assignee, at the time of the proposed assignment ) is creditworthy as detrinined under the provisions of Northern's FBRC Gas Tariff, Any party may assign its respective right, title and interest in and to and under this Precedent Agreement to a trustee or trustees, individual or corporate, as security for bonds or other obligations or securities. Such assignment shall not obligate assignee in any respect to perform the obligations of the assignor under this Precedent Agreement,
20, Either partys failure to comply with the terms contained in the Firm Throughput Service
Agreement, the TFX Rate Schedule, the General Terms and Conditions of Northern's FERC
Gas Tariff and/or this Precedent Agreement shall be a breach and shall constitute a default under this Precedent Agreement. In the event of a default, the nondefaulting party shall have all rights granted to it at law or in equity, including those contained in Northern's FE RC Gas
Tariff, No provision herein shall not to limit any relief or damages that may be available to the parties in the event of a breach of this Precedent Agreement or the Finn Throughput
Service Agreement,
Page 5

21. Customer and Northern acknowledge and agree that this Precedent Agreement and the terms and conditions hereof constitute "Proprietary 1nbrmation" within the meaning of that certain
Confidentiality Agreement, dated August 27, 2012, between CF Holdings and Northern, which is incorporated herein by reference; provided, however, nothing herein or in the
Confidentiality Agreement prohibits Northern from including this Precedent Agreement in an application for any approvals. This Precedent Agreement and the Confidentiality Agreement constitute the entire agreement among the parties with respect to the subeet matter hereof and thereof and supersedes all other prior agreements and understandings, both written and oral, among the parties or any of them with respect to the subject matter hereof and thereof.
The parties hereto have executed this Precedent Agreement to indicate their acceptance,
Northern Natural Gas Company CF Industries, Inc.
By:
Title:
Date;
\1( ' r uku.
0, aot?..
By:
Title:
Daw
Page 6

PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
CF INDUSTRIES, INC.
APPENDIX A
Firm Throu ghput Entitlement
Rate Schedule: TFX
Contract Term: No later than April 1, 2013, Customer shall notify Northern in writing: (i) the effective date of the Firm Throughput Service Agreement which shall be no earlier than
November 1, 2014 and no later than December 31, 2015; and (ii) whether the contract term is 10,
15 or 20 years commencing on the effective date of the Firm Throughput Service Agreement.
Quantities and Points: Thecontract MDQ shall be 90,00() Dth/day. To the extent Northern can accommodate a change to the contract MDQ without impact to other shippers participating in the
Project and without causing a delay in the in-service date of the Project, upon written notice to
Northern no later than April 1, 2013, Customer may increase or decrease the contract MDQ to be effective upon the effective date of the Firm Throughput Service Agreement through the term of the Firm Throughput Service Agreement. The primary delivery point shall be a new delivery point to be eonsrticted at or near Customer's Port Neal complex in Sergeant Bluff, Iowa (New
Delivery Point) with an MDQ of 90,000 Dthlday. The primary receipt points shall be
NBPL/NNG Ventura (P01 9192) with an MDQ of 40,000 Dthlday and NNG FIRLD/MKT
Demarcation (P01 # 37654) with an MDQ of 50,000 Dthlday. Prior to Northern's execution of the Firm Throughput Service Agreement, Northern shall have the right to reallocate the contract
MDQ between the primary receipt points noted above based on available capacity at the receipt points in order to optimize the required construction
Rates
The total reservation rate shall be agreed upon by the parties no later than April 1, 2013 (Agreed-
Upon Reservation Rate)
Page 7

The Agreed-Upon Reservation Rate is applicable to all Market Area receipt points and the New
Delivery Point. If any oilier points are used on either a primary or alternate basis, including use by any shipper acquiring the capacity through capacity release, Customer shall pay a reservation rate of $0.15/Dthlday plus the Agreed-Upon Reservation Rate for the entire contract MDQ during the month that any such points are used.
The Agreed-Upon Reservation Rate is subject to change based nn the Actual Cost (excluding tax gross-up) of Northern's facilities. Northern shall notify Customer of any change to the Agreed-
Upon Reservation Rate required for Nortlien'i to construct the facilities and provide the natural gas transportation service.
In addition to the Agreed-Upon Reservation Rate, Customer shall pay Northern's maximum commodity late, as revised from time to time, and all current and future applicable reservation and commodity surcharges. Customer shall provide fuel, use and unaccounted for as provided in
Northern's hERO Gas Tariff.
Other Terms
Hourly takes of natural gas shall be less than or equal to 4,167 percent (4.167%) of the
Entitlement (1/24 of the MDQ) at the New Delivery Point and any alternate delivery points
(including those used under capacity release) during the term of the Firm Throughput Service
Agreement,
The Entitlement is subject to the Right of First Refusal as described in Section 52 of Northern',-,
FERC Gas Tariff.
Northern agrees to provide service at a pressure or not less than 800 psig at the MDQ set forth above at the New Delivery Point. Such pressure guarantee is not applicable in the event of Force
Majeure, as defined in Northern's FERC Gas Tariff, during periods of maintenance on facilities necessary to effectuate this pressure guarantee or as agreed.
Page 9

PRECEDENT AGREEMENT
BETWEEN
NORI'l-lERN NATURAL GAS COMPANY
AND
CF INDUSTRIES, INC.
APPENDIX B
Facilities
Northern Facilities
Northern and/or its designee will retain ownership of, operate and maintain the facilities required to provide the transportation service to Customer at the New Delivery Point, Northern shall indonmify and hold Customer, including its officers, directors, employees and agents, harmless from and against any and all claims arising out of the design, construction, ownership, operation and maintenance of Northern's facilities.
Northern's facilities shall be designed, constructed, operated, and maintained by Northern in accordance with applicable industry standards and codes, including AGA design standards.
Customer Facilities
Customer will provide, own, operate and maintain all gas service equipment (including valves, pressure regulators, odorizatioii equipment and other facilities) requited beyond the point of delivery (the flange on Northern's outlet valve of the New Delivery Point), Customer is responsible for providing over-pressure protection equipment for its facilities. Customer shall indemnify and hold Northern and Northern's affiliates, including their officers, directors, employees and agents, harmless from and against any and all claims arising out of the design, construction, ownership, operation and maintenance of Customer's facilities and the receipt by
Customer of gas at Northern's pressure, Customer represents and warrants to Northern that it has the knowledge and expertise, and its employees, agents and contractors are qualified to design, construct and operate the gas service equipment required beyond the point of delivery including specifically, but not by way of limitation, the receipt of gas from Northern at Northern's pressure.
Page 9

Customer's facilities shall be designed, manufactured, fabricated, constructed, installed, operated, teste(i and maintained by Customer in accordance with applicable industry standards and codes (including AGA design standards).
Page 10

PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
CF INDUSTRIES, INC.
APPENDIX C
Security Requirements
If, at any time after the execution of this Precedent Agreement, including during the term of any
Firm Throughput Service Agreement entered into pursuant to this Precedent Agreement,
Customer is not creditworthy as determined under the provisions of Northern's FERC Gas Tariff,
Customer agrees to provide within ten (10) business clays of a written request from Northern,
(i) a payment guarantee from CF Holdings, if CF Holdings is creditworthy (or any other creditworthy entity acceptable to Northern) to Northern of allCustomer's payment obligations to
Northern in the form and substance of the attached Appendix C4, or (ii) security as described below.
The amount of security shall be equal to (i) the Actual Cost of facilities, and (ii) an amount equal to the highest three (3) months of reservation charges under the Firm Throughput Service
Agreement,
The amount of security associated with the Actual Cost of any non-mainline facilities shall be in a form consistent with the types of security set forth in Section 46(a) of Northerns IERC Gas
Tariff (eg., cash or a letter of credit acceptable to Northern in the form and substance of the attached Appendix C2), The amount of security associated with the Actual Cost of any mainline facilities shall be in the form of a letter of credit acceptable to Northern in the form and substance of the attached Appendix C-2,
If Customer is not creditworthy, Northern shall provide written notice to Customer of the amount of the security associated with the Actual Cost, arid the date(s) such security is due, if Customer becomes non-creditworthy after the execution of this Precedent Agreement and prior to the commencement of construction of the Project, the amount of security Customer shall provide shall be determined by Northern and shall reasonably reflect that portion of the Actual
Page I

Cost of the facilities estimated to be incurred, including AFUDC, by Northern prior to the date of commencement of construction. If Customer continues to be or becomes non-creditworthy after commencement Of construction of the Project, the amount of security shall be the Actual Cost of the facilities.
Security for reservation charges shall be governed pursuant to Section 46 of Northern's FERC
Gas Tariff.
Upon completion of the Project, if Customers Actual Cost is lower than the security provided,
Northern will reduce the security associated with the cost of construction to equal the Actual
Cost. In the event the Actual Cost is higher than the security provided, Customer agrees to increase its security associated with the cost of construction with Northern for the difference between the Actual Cost and the security associated with the cost of construction, If the security is required after the effective date of the Firm Throughput Service Agreement, such security shall be equal toCustomer's Remaining Facilities Cost Obligation as determined pursuant to
Paragraph 8 of this Precedent Agreement.
If Customer: (i) performs in accordance with the Firm Throughput Service Agreement including making all payments required when due, and (ii) has not reduced or realigned its firm
Entitlement as listed in the Firm Throughput Service Agreement on the effective date of the Firm
Throughput Service Agreement, Northern shall reduce, on each annual anniversary of the effective (late of the service on the Firm Throughput Service Agreement through the term of such agreement, the portion of the security requirement equal to the cost of the facilities by an amount equal to (1) the Reservation Revenue collected during the year, divided by the total Reservation
Revenue associated with the MDQ of the Firm Throughput Service Agreement effective upon the date of the Firm Throughput Service Agreement, multiplied by (2) the Actual Cost of the facilities. The obligation of Northern to reduce such security shall be subject to the right of
Northern to recoup and/or setoff all or any part of the security against any obligations or claims whatsoever owing to Northern from Customer.
In the event any or all of the Entitlement is reduced or realigned, in whole or in part, prior to the end of the term of the Firm Throughput Service Agreement for any reason not caused solely by
Northern, Customer shalt pay to Northern the balance of customer's Remaining Facilities Cost
Obligation. If at that time Northern is holding security, Customer waives any and all claims to the balance of the security held by Northern and agrees that such balance will be retained by
Page 12

Northern and applied as a credit toward the payment for the Customers Remaining Facilities
Cost Obligation and any other amounts due ftom Customer.
Failure to remit in full all security by the due dates sot forth in Northerifs notice shall be considered a breach of this Precedent Agreement and the Firm Throughput Service Agreement and may, at the discretion of Northern, result in the termination of Northern's obligations under this Precedent Agreement and the Firm Throughput Service Agreement. Upon any deRutt under this Precedent Agreement or the Firm 'rhroighpiit Service Agreement, Northern may pursue any remedy available at law or in equity.
The security shalt be owned and held by Northern tbr its sole and exclusive benefit until the earlier of such time as (i) Customer has satisfied in full all of its obligations under this Precedent
Agreement and the Firm Throughput Service Agreement, or (ii) Customer becomes creditworthy. Customer acknowledges that the security is subject to the right of Northern to recoup anchor setoff all or any part of the security as to any obligations or claims whether under the Firm Throughput Service Agreement and this Precedent Agreement or otherwise, owing to
Northern from Customer including Customer's Remaining Facilities Cost Obligation.
The security will be owned and hold by Northern, and Customer's sole interest in the security shall be a residual interest, if any, remaining after all of Customer's obligations under the Firm
Throughput Service Agreement and this Precedent Agreement are satisfled in full. If security is provided in the form of a Letter of Credit, Customer shall have no interest in the Letter of Credit or its proceeds.
No security will be required during any period of time that Customer establishes and maintains creditworthiness pursuant to Norihern's FRC Gas Tariff.
Page 13

Contract No. 601574-0
PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
CF INDUSTRIES, INC.
APPENDIX C-I
GUARANTY
THIS GUARANTY is given as of [insert datel by flusserl guarantor], a [insert place of incorporation] corporation, with its principal place of business located at finseit street address
('no P0 Boxes), stale, zip code] ('Guarantor") to NORTHERN NATURAL GAS COMPANY
("Northern")
A.
B.
C.
RECITAL
WHEREAS, Northern owns and operates certain facilities to provide natural gas services pursuant to Northern's FERC Gas Tariff;
WHEREAS, Guarantor desires to induce Northern to (1) commence or to continue to provide transportation or storage services for [insert shipper/entityl ("Shipper") pursuant to transportation and storage agreements and the terms and conditions of
Northern's FBRC Gas Tariff, and/or (2) enter into or continue performance under facilities or precedent agreements with Shipper, and/or (3) enter into or continue performance or set-vice under agreements with Shipper incident to such transportation or facilities agreements and/or 4) to enter into purchases or sales of natural gas or related
Financial transactions with Shipper (collectively "Agreements"); and
WHEREAS, Northern is willing to commence or continue such service or performance only if Guarantor guarantees payment performance of Shipper's covenants, agreements, obligations, and liabilities under the Agreements.
NOW THEREFORE, in consideration of the premises Guarantor agrees as follows:
AGREEMENT
Guaranty This is a guaranty of payment and not of collection. Guarantor hereby irrevocably and unconditionally guarantees the payment of any and all past, present and future Agreements, obligations and liabilities of Shipper to Northern pursuant to any Agreements entered into prior to or during the term of this
Guaranty, (collectively, the "Guaranteed Obligations"), subject to the terms and

conditions set forth herein, Within fifteen (15) business days following written notice by Northern to Guarantor of Shipper's failure to pay any Guaranteed
Obligation not in dispute in accordance with the terms of Northern's FERC Gas
Tariff, Guarantor will pay to Northern by wire transfer or certified funds the amounts identified in the notice. Northern will provide in the notice to Guarantor a brief explanation and an accounting of the amounts owed similar to \vhflt
Northern provides to its other shippers. Guarantor agrees that Northern may resort to Guarantor for payment of any of the Guaranteed Obligations, whether or not Northern shall have resorted to any collateral security, or shall have proceeded against any other obligor principally or secondarily obligated with respect to any of the Guaranteed Obligations.
2. Guaranty Unconditional and Absolute, The obligations of Guarantor hereunder shall be unconditional and absolute and without limiting the generality of the foregoing, shall not be released, discharged or otherwise affected by:
(A) any extension, renewal, settlement, compromise, waiver, discharge or release in respect of any Guaranteed Obligations of Shipper;
(B) the, existence, or extent of, any release, exchange, surrender, nonperfection or invalidity of any direct or indirect security for any of the
Guaranteed Obligations;
(C) any modification, amendment (including, but not limited to, a restatement in whole or in part), w'aiver, extension of or supplement to any of the
Agreements or the Guaranteed Obligations agreed to from time to time by
Shipper and Northern and validly executed in accordance with the terms of the applicable Agreement;
(D) any change in the corporate existence (including its constitution, laws, rules, regulations or powers), structure or ownership of Shipper, Northern or Guarantor, or any insolvency, bankruptcy, reorganization or other similar proceeding affecting Shipper, Northern or Guarantor, or their assets;
() the existence of any claim, set-off or other rights which Guarantor may have at any time against Northern, Shipper, or any other corporation or person, whether in connection herewith or in connection with any unrelated transaction; provided that nothing herein shall prevent the assertion of any such claim by separate suit or compulsory counterclaim;
(F) the invalidity or unenfoi'ceability in whole or in part of the Agreements or any Guaranteed Obligations or any instrument evidencing any Guaranteed
Obligations, or any provision of applicable law or regulation purporting to
Page 15

3.
4.
5.
6.
7.
prohibit payment by Shipper of amounis to be paid by it under the
Agreements or any of the Guaranteed Obligations;
(G) any other act or omission to act or delay of any kind by Northern which might, but for the provisions of this paragraph, constitute a legal or equitable discharge of Guarantors' obligations hereunder.
Term and Termination, This Guaranty is necessary, among other reasons, to induce Northern to enter into transportation and facilities agreements that may have continuing payment obligations for years into the future, This Guaranty shall remain in full force and effect until the Guaranteed Obligations arising out of any Agreements have been performed. Guarantor may terminate this Guaranty at any time by providing forty five (45) business days' prior written notice of termination to Northern. In the event Guarantor provides notice of termination, this Guaranty shall continue to apply to any Agreements entered into prior to such termination; provided, however, Guarantor shall not be liable under this Guaranty for any obligationt of Shipper arising under any Agreements entered into by
Northern and Shipper after such termination (and such obligations shall not constitute Guaranteed Obligations),
WaiverbGtIafantoj. Guarantor irrevocably waives acceptance hereof, diligence, presentment, demand, protest, notice of dishonor, notice of any sate of collateral and any notice not provided for herein, any right or subrogation to Shipper's rights against Northern under the Agreement or otherwise, and any requirement that at any time any person exhaust any right to take any action against Shipper or their assets orally other guarantor or person.
Subrogation. Upon making any payment hereunder, Guarantor shalt be subrogated to the rights of Northern against Shipper with respect to such payment; provided that Guarantor shall not enforce any right or receive any payment by way of subrogation until all of the Guaranteed Obligations then due shall have been paid in full and Northern agrees to take, at Guarantor's expense, such steps as Guarantor may reasonably request to implement such subrogation.
Stay of Acceleration ineffective with Respect to Guarantor. In the event that acceleration of the time for payment of any amount payable by Shipper under the
Agreements is stayed upon the insolvency, bankruptcy or reorganization of
Shipper, all such amounts otherwise subject to acceleration or required to be paid upon an early termination pursuant to the terms of the applicable Agreement shall nonetheless be payable by Guarantor,
Assignment: Successors and A ssi gns. This Guaranty shall be binding upon and inure to the benefit of Guarantor and its successors and assigns and Northern and its successors and assigns. Guarantor may not assign its rights and obligations hereunder without the prior written consent of the Northern, which shall not be
Page 16

unreasonably withheld, and any such purported assignment without such written consent shall be void.
8. Amendments and Waivers. No provision of this Guaranty may be amended, supplemented or modified, nor any of the terms and conditions hereof waived, except by a written instrument executed by Guarantor and Northern.
91
Remedies Cumulative, The rights, powers, remedies and privileges provided in this Guaranty are cumulative and not exclusive of any rights, powers, remedies and privileges provided by law and any other agreement.
10. Limitation, Guarantor's liability hereunder shall be, and is specifically limited to,
Payments expressly required to be made by Shipper under the Agreements (even if such payments are deemed to be damages); provided that, Guarantor shall pa all reasonable and documented out-of-pocket fees and expenses incurred and expended by Northern to enforce this Guaranty and to collect any amounts from
Guarantor owing hereunder, Notwithstanding the foregoing, in no event shall
Guarantor be subject hereunder to consequential, exemplary, equitable, special or punitive damages.
11, Representations and Warranties. Guarantor represents and warrants In Northern as of the date hereof that:
(A) Guarantor is duly incorporated, validly existing and in good standing under the laws of the jurisdiction of its incorporation and has full corporate power to execute, deliver and perform this Guaranty.
(B) The execution, delivery and perfoi'manee of the Guaranty has been and remain duly authorized by all necessary corporate action and do not contravene any provision of law or of Guarantor's constitutional documents or any contractual restriction binding on Guarantor or its assets.
(C) All consents, authorizations and approvals of, and registrations and declarations with, any governmental authority necessary for the due execution, delivery and performance of this Guaranty have been obtained and remain in full force and effect and all conditions thereof have been duly complied with, and no other action by and no notice to or filing with, any governmental authority is required in connection with the execution, delivery or performance of this Guaranty.
(D) This Guaranty constitutes the legal, valid and binding obligation of
Guarantor enforceable against Guarantor in accordance with its terms, subject, as to enforcement, to bankruptcy, insolvency, reorganization and other laws of general applicability relating to or affecting creditors' rights
Page 17

and to general equity principles.
12.
Notices. All notices required herein shall be in writing and shall be deemed delivered when received by registered or certified mail or overnight delivery service to:
Northern: 1111 South 103 Street
Omaha, NE 68124-1000
Attn: Finance Department
Telephone: (402) 398-7200
Fax: (402) 548-5259
Guarantor:
Telephone:
For infonnaticmal purposes;
CF Industries, Inc.
4 Parkway North, Suite 400
Deerfield, IL 60015-2590
Attn: Director, Raw Materials Procurement
Telephone: 847-405-2448
Fax: 847-405-2711 or such other address as either patty may from time to time specify in writing.
13.
Governin g law and jurisdiction. This Guaranty shall in all respects be governed by, and construed in accordance with, the law of the State of New York, without regard to principles of conflicts of laws thereunder (other than Sections 5-1401 and 5-1402 of the New York General Obligations Law), Northern (by it acceptance of this Guaranty) and Guarantor each hereby irrevocably: (i) consents and submits to the exclusive jurisdiction of the United States District Court for the
Southern District of New York, or if that court does not have subject matter jurisdiction, to the exclusive jurisdiction of the Supreme Court of the State of
New York, New York County (without prejudice to the right of any party to remove to the United States District Court for the Southern District of New York) for the purposes of any suit, action or other proceeding arising out of this
Guaranty or the subject matter hereof brought by Northern, Guarantor or their respective successors or assigns; and (ii) waives (to the fullest extent permitted by applicable law) and agrees not to assert any claim that it is not personally subject to the jurisdiction of the above-named courts, that the suit, action or proceeding is brought iii an inconvenient forum, that the venue of the suit, action or proceeding
Page 18

is improper or that this Guaranty or the subject matter hereof may not be enforced in Or by such court.
4. TO THE FULLEST EXTENT PERMITTED BY LAW, JACH OF THE
PARTIES HERETO WAIVES ANY RIGHT IT MAY HAVE TO A TRIAL
BY JURY IN RESPECT OF LITIGATION DIRECTLY OR INDIRECTLY
ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS
GUARANTY, EACH PARTY FURTHER WAIVES ANY RIGHT TO
CONSOLIDATE ANY ACTION IN WHICH A JURY TRIAL HAS BEEN
WAIVED WITH ANY OTHER ACTION IN WHICH A JURY TRIAL
CANNOT BE OR HAS NOT BEEN WAIVED,
15 Third Party Beneficiaries, This Guaranty shall not be construed to create any third party beneficiary relationship as to or with any person or entity other than
Northern,
IN WITNESS WHEREOF, Guarantor has caused this Guaranty to be duly executed as of the (tale fist above written.
Coiupanyj
By:
Name:
Title:
Page 19

Contract No, 601574-0
PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
CF INDUSTRIES, INC.
BENEFICIARY:
APPENDIX C-2
IRREVOCABLE STANDBY LETTER OF CREDIT
DATE OF ISSUANCE:
Northern Natural Gas Company, a Delaware corporation liii South 103"' Street
Omaha, NE 68124-1000
Attn: Credit Operations
Phone: (402) 398-7741
Fax: (402) 548-5259
Applicant: [Company}
[Addrcss1L
14yi7ipi.______
Attn:
Phone:
Fax:
Re: Irrevocable Standby Letter of Credit No,: --
Amount (US, Dollars): $_______________________________ Expiration Date:
At the request of [Insert Party's legal name, address and zip code) ("Account Party"), [Insert Bank's legal name, address and zip code] ("Issuing Bank") hereby establishes our irrevocable Standby Letter of Credit
("Letter of Credit") in your favor for the aggregate amount of [_J United States Dollars
[($j), available to you at sight upon demand at our offices as specified above on or before the expiration hereof,
Funds under this Letter of Credit are available at sight against your draft drawn on us bearing upon its face the amount of the draw and the clause, "Drawn under [Name of Financial institution issuing LOC) of
Credit Number [Number] dated [date)," and accompanied by the, following documents:
The original or it and
CO PY of this Letter of Credit and any subsequent amendments, if any;
A statement purportedly signed by an authorized office,' of Northern Natural Gas Company certifying that "Shipper is in default of its obligations under one or more agreement(s) between
Shipper and Northern Natural Gas Company, and all applicable notice and cure periods as sot forth in the agreement(s) have expired" and/or that "Shipper has failed to pay its invoice when due under one or more agreement(s) between Shipper and Northern Natural Gas Company, and all applicable notice and cure periods as set forth in the agreement(s) have expired" and/or that

"Northern Natural Gas Company has contractual obligations with Shipper that extend beyond the applicable expiration date of the Letter of Credit and Shipper has not provided a substitute Letter of Credit or other eligible security within ninety (90) business days prior to such date; wherefore,
Northern Natural Gas Company is drawing upon this Letter of Credit For the entire undrawn amount and will hold the proceeds as security,"
Partial drawings and multiple drawings under this Letter of Credit are permit(ed.
All charges of the Letter of Credit are for the account of the applicant.
We hereby engage with you that drafts under and in compliance with the terms and conditions of this
Letter of Credit will be duty honored by us if presented at this office or by overnight courier or by registered mail on or before the current expiration date.
It is a condition of this Letter of Credit that it shall be considered automatically extended without amendment for an additional period of one () year from the present or any future expiration date unless we notify you in writing not less than ninety (90) days before such date that we elect not to extend this
Letter of Credit for such additional term, such notice to he sent by registered mail to you at the address herein, Upon receipt by you of such notice you may draw on us at sight for the balance remaining under this Letter of Credit within the then applicable expiration date.
Draft presentation before 9:00 AM [Applicable Time Zone] on any Business Day (as defined below) shall be honored before 5:00 PM (Applicable Time Zone,] on the same Business Day by wire transfer in immediately available funds to any account designated by an authorized representative ot'the Beneficiary
(or any other reasonable means specified by an authorized representative of the Beneficiary) Draft presentation after 9:00 AM [Applicable Time Zone] and before 5:00 PM [Applicable Time Zone] on any
Business Day shall be honored on the following Business Day in immediately available funds to any account designated by an authorized representative of the Beneficiary (or any other reasonable means specified by an authorized representative of the Beneficiary). As used in this Letter of Credit, the term
"Business Day" shall mean a day other than Saturday or Sunday or any other day in which Banking
Institutions in the State of [Applicable State] are authorized or required by law to close.
The amount which may be drawn by you under this Letter of Credit shall be automatically reduced by the amount of any drawings paid through the Issuing Bank referencing this Letter of Credit No.
This Letter of Credit is subject to and governed by the laws of the State of New York and except as otherwise expressly stated herein, is subject to all provisions of The (Jul/him Customs and Pracv(c'e for
Documentary Credits (2007 Revision), International Chamber of Commerce, Publication No. 600 ("UCP
600"), and, in the event of any conflict, the laws of New York, without regard to principles of conflicts of law, shall control.
TO THE FULLEST EXTENT PERMITTED BY LAW, EACH OF THE PARTIES HERETO WAIVES
ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF LITIGATION DIRECTLY
OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENI'.
EACH PARTY FURTHER WAIVES ANY RIGHT TO CONSOLIDATE ANY ACTION IN WHICH A
JURY TRIAL HAS BEEN WAIVED WITH ANY OTHER ACTION IN WHICH A JURY TRIAL
CANNOT BE OR HAS NOT BEEN WAIVED,
IBANK SIGNATURE]
Page 21

PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
CF INDUSTRIES, INC.
APPENDIX D
Notice of Termination of Precedent Agreement.
In accordance with Paragraph 16 of the Precedent Agreement entered into between Northern
Natural Gas Company and CF Industries, Inc. (Customer) as of (Precedent
Agreement), Customer hereby provides notice to terminate the Precedent Agreement effective iimnediately. The basis for such termination is as follows:
Final approval from Customer's board of directors has not been received.
By:
Title:
Date:
Page 22

Contract No. 601574-1
AMENDMENT NO. I
TO
PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
CP INDUSTRIES, INC.
WHEREAS, Northern Natural Gas Company (Northern) and CF Industries Nitrogen, LLC (as successor by assignment to CF Industries, Inc.) (Customer) entered into a Precedent Agreement dated November 5, 2012, Contract No, 601574-0 (Precedent Agreement); and
WHEREAS, Northern and Customer desire to amend the Precedent Agreement to reflect the agreement to delay the date to agree upon rates and terms as provided in the Precedent
Agreement;
NOW THEREFORE, in consideration of the premises and other good and valuable consideration, Northern and Customer agree as follows:
1. in Paragraph 14, the date of April 1, 2013 in the first parenthetical shall be changed to
May 1, 2013 and the second parenthetical shall be deleted in its entirety.
2.
Paragraphs 15 and 16 of the Precedent Agreement are deleted in their entirely.
3.
In the Paragraphs entitled "Contract Term," "Quantities and Points," and "Rates" in
Appendix A to the Precedent Agreement, the date of April 1, 2013, shall be changed to
May 1, 2013.
4.
Customer agrees that the Precedent Agreement requires that Customer will reimburse
Northern for the Actual Cost, as defined in the Precedent Agreement. Notwithstanding any provision to the contrary, if the Project, as defined in the Precedent Agreement, is not constructed for any reason, Customer will pay all Actual Costs incurred or committed to by Northørn.
Except as amended above, all terms of the Precedent Agreement shall remain in full force and effect,
Northern Natural Gas Company CF Industries Nitrogen, LLC
By:__
Title:
'1c ?rt.r
Date: 3(ZSR
Title V ' R ic - (\ i
Date:____________

Contract No. 601574-2
AMENDMENT NO 2
TO
PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
CF INDUSTRIES NITROGEN, LLC
WHEREAS, Northern Natural Gas Company (Northern) and CF Industries Nitrogen, LLC (as successor by assignment to CF Industries, Inc.) (Customer) entered into a Precedent Agreement dated November 5, 2012, Contract No, 601574-0 as amended PrecedentAgreeinent); and
WHEREAS, Northern and Customer desire to further amend the Precedent Agreement to reflect agreed upon rates and terms as provided in the Precedent Agreement;
NOW THEREFORE, in consideration of the premises and other good and valuable consideration, Northern and Customer agree as follows:
1. In parenthetical (1) of paragraph8 of the Precedent Agreement, the phrase "Preliminary
Reservation Rate) the Interim Reservation Rate and the" is added immediately before the words "Agreed-Upon Reservation Rate."
2 The second sentence of Paragraph 14, of the Precedent Agreement is deleted in its entirety.
3. Appendix A to the Precedent Agreement is deleted in its entirety and replaced with the "1
Revised Appendix A" attached hereto and incorporated herein by reference.
4. The second paragraph under "Facilities; Northern Facilities" of Appendix B is deleted in its entirety and replaced with the following:
Northern's facilities, In Norther&s sole determination and discretion, shall be designed, constructed, operated, and maintained by Northern in accordance with
Northern's standards and industry standards and codes, including ACA design standards, where applicable,

Contract No. 601574-2
Except as amended above, all terms of the Precedent Agreement shall remain in full force and effect.
Northern Natural Gas Company CF industries Nitrogen, LLC
By:
Title: J)
Date:
6&13 j t4-j' 1' Title.
Date:
Ph)lIpp Koch
G P yQhatn
A OF Industries Company
-
1 ^ q4--
L,

Contract No, 601574-2
PRECEDENT AGREEMENT
BETWEEN
NORTHERN NATURAL GAS COMPANY
AND
CF INDUSTRIESNETROGEN, LLC
1 REVISED APPENDIX A
Firm Throughput Entitlement
Rate Schedule: TPX
Contract Term: December 1, 2014 through October 31, 2025, subject to any necessary regulatory approvals, and acceptance of such approvals, and the completion of any Northern facilities necessary to provide the service contemplated herein,
Quantities and Points: The total contract MDQ shall be:
5,000 Dth/day for the period December 1, 2014 through February 28, 2015,
0 Dth/day for the period March 1, 2015 through March 31, 2015,
44,000 Dthlday for the period April 1, 2015 through July 31, 2015,
80,000 Dtli/day for the period August 1, 2015 through September 30, 2015,
85,000 Dth/day for the period October 1, 2015 through November 30 2015, and
88,000 Dth/day for the period December 1, 2015 through October 31, 2025.
The primary delivery point shall be a new delivery point to be constructed at or neat' Customer's
Port Neal complex in Sergeant Bluff, Iowa (New Delivery Point). The primary receipt points shall be NBPL/NNG Ventura (P01 #192) and NNG FIELD/MKT Demarcation (P01 # 37654) with the following MDQs,
December 1, 2014 through Februar y 28, 2015
NNG FIELD /MKT Demarcation pr11 1,2015 through July 31, 20115
NNG FIELD /MKT Demarcation
NBPL/NNG Ventura
5,000 Dth/day
24,640 Dth/day
19,360 Dth/day

Contract No. 601514-2
August 1, 2015 throu gh September 30, 2015
NNG FIELD /MKT Demarcation
NBPL/NNG Ventura
44,800 Dth/day
35,200 Dth/day
October 1, 2015 throu gh November 30, 2015
NNG FIELD /MKT Demarcation
NBPL/NNG Ventura
47,600 Dth/day
37>400 Dth/day
December 1, 2015 throu gh October 31, 2025
NNG FIELD /MKT Demarcation
NBPLThNG Ventura
49,280 Dth/clay
38,720 Dth/day
Rates
For the period 12/1/2014 through 2/28/2015, the total reservation rate shall be equal to the rate set forth below and defined as the Agreed-Upon Reservation Rate (Preliminary Reservation
Rate), in addition to the Preliminary Reservation Rate, Customer shall pay the maximum commodity rate set forth in Northern's FBRC Gas Tariff, as revised from time to time
(Maximum Commodity Rate).
For the period 4/1/2015 through 7/31/2015, the total reservation rate shall be $0,5598IDtlifday
(Interim Reservation Rate), In addition to the Interim Reservation Rate, Customer shall l)Y a commodity rate equal to the maximum interruptible transportation rate set forth in Northern's
FERC Gas Tariff, as revised from time to time (IT Commodity Rate)
For the period 8/1/2015 through 10/31/2025, the total reservation rote shall be $0.7598/Dth/day
(Agreed-Upon Reservation Rate). In addition to the Agreed-Upon Reservation Rate, Customer shall pay Northern's Maximum Commodity Rate,
Customer shall have a one-time option, upon written notice to Northern by 2/1/2015, to continue the Interim Reservation Rate and the IT Commodity Rate through a date set forth in the notice but, in no event, later than 6/30/2016, provided that, during that period: (1) less than
10,000 Dth/day is flowing through the New Delivery Point for all calendar days of such month; or (2) more than 10,000 Dth/day but less than 20,000 Dth/day is flowing through the New
Delivery Point for no more than five calendar days of such month, and, for the remaining days of

Contract No. 601574-2 such calendar month, no more than 10,000 Dth/day is flowing through the New Delivery Point,
If Customer elects this option ) the rates shall be the Interim Reservation Rate and the IT
Commodity Rate for the period 8/1/2015 through the earlier of (1) the date greater than
20,000 Dth/day flows through the New Delivery Point, or (2) the sixth day in any calendar month where Customer flows greater than 10,000 DIb/day and less than 20,000 Dth/day through the New Delivery Point; or (3) the date set forth In Customer's notice, but no later than
6/30/2016. Following that date the rates shall be the Agreed-Upon Reservation Rate and the
Maximum Commodity Rate through the term of the Firm Throughput Service Agreement,
The Preliminary Reservation Rate, the Interim Reservation Rate and the Agreed-Upon
Reservation Rate are applicable to all Market Area receipt points and the New Delivery Point. Tf ally other points are used on either a primary or alternate basis ) including use by any shipper acquiring tile through capacity release, Customer shall pay a reservation rate of
$0.1 5/Dth/day plus the Agreed-Upon Reservation Rate for the entire contract MDQ and the
Maximum Commodity Rate during the month that any such points are used.
In consideration for the above rates, all gas transportation services for the New Delivery Point shall be provided for under the Firm Throughput Service Agreement, If another agreement is used to serve the New Delivery Point, the rates granted herein shall be terminated for any month
In which another agreement is used and Customer shall pay a reservation rate of $0.1 SIDthfday plus the Agreed-Upon Reservation Rate for the entire contract MDQ and the Maximum
Commodity Rate during the month that any other agreement is used.
In addition to the Preliminary Reservation Rate, the Interim Reservation Rate and the Agreed-
Upon Reservation Rate, Customer shall pay all current and future applicable reservation and commodity surcharges. Customer shall provide fuel, use and unaccounted for as provided in
Northern's PERC Gas Tariff.

Contract No. 601574-2
Other Terms
Hourly takes of natural gas shall be less than or equal to 4.167 percent (4.167%) of the
Entitlement (1/24 of the MDQ) at the New Delivery Point and any alternate delivery points
(including those used under capacity release) during the term of the Firm Throughput Service
Agreement, provided, however, Northern shall reasonably coordinate with Customer during the commissioning of the expansion of the Port Neal complex to allow hourly takes of natural gas to exceed the ihuit set forth in this paragraph if Customer provides advance notice to Northern and so long as the operational integrity of Northern's system shall be unaffected by such excess,
The Entitlement is subject to the Right of First Refusal as described in Section 52 of Northern's
PBRC Gas Tariff,
Northern agrees to provide service at a pressure of not less than 800 psig at the MDQ set forth above at the New Delivery Point. Such pressure guarantee is not applicable in the event of Force
Majeure, as defined in Northern's FERC Gas Tariff, or during periods of maintenance on facilities necessary to effectuate this pressure guarantee, Customer agrees to work with Northern on a best efforts basis to use Customer's plant compression to provide the required 800 psig pressure as operational situations may require.
If Northern falls to provide primary deliveries under the Firm Throughput Service Agreement that are scheduled on Gas Day I (as defined in Northern's FBRC Gas Tarlft) or required on any
Gas Day, the Firm Throughput Service Agreement will be subject to the provisions of the
Section 22 of the General Terms and Conditions of Northern's FERC Gas Tariff with regard to reservation chargecredits. For purposes of such reservation charge crediting, any reservation charge credit applicable to the Firm Throughput Service Agreement shall be no greater than
$0.20 Dth/day,
The Firm Throughput Service Agreement shall contain the following language:
TO THE FULLEST EXTENT PERMITTED BY LAW, NORTHERN AND CUSTOMER
WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY WITH RESPECT TO
LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN
CONNECTION WITH, THE FIRM THROUGHPUT SERVICE AGREEMENT.
NORTHERN AND CUSTOMER FURTHER WAIVE ANY RIGHT TO CONSOLIDATE
ANY ACTION IN wrncu A JURY TRIAL HAS BEEN WAIVED WITH ANY OTHER
ACTION IN WHICH A JURY TRIAL CANNOT BE OR HAS NOT BEEN WAIVED,

Federal
Agency
Federal Energy
Regulatory
Commission
(FERC)
Date Submitted!
To Be Submitted
Date Permit or
Permit or
Clearance
Clearance Received,
Requested or
Required To Agency
Expected
Certificate for Submitted Section 7 Requested February construction application August 28, 2014 and operation 1, 2013 of interstate natural gas transmission pipeline facilities
Environmental Delegated to Clean Air Act Plan to submit
Protection the states
Agency (EPA) (Nebraska permits and
Expect approval no application August later than February approvals - air 15, 2013, following 28, 2014
Department of quality finalization of the
Environmental construction
Quality permit for
[NDEQ] and Homer
Iowa compressor
Department of station
Natural
Resources
{IDNR]) scope and facility layout
Delegated to Clean Water the states Act (CWA)
(NDEQ and Section 401
IDNR)
Submitted request for certification
May 15, 2013
Water Quality Submitted
Certification notification regarding meter
Received July 12,
2013, based upon
May 15 and July 11
Project alignments station and pipeline relocation July 11,
2013
Delegated to CWA Section Permits will be the states
(NDEQ and
TDNR)
402 permits submitted for wastewater September 2013 or stormwater following discharges consultation with
Northern's contractor
Expect permit approvals October
2013

Federal
Agency
Bureau of
Indian Affairs
(BIA) -
Midwest
Region
BIA - Great
Plains Region
Advisory
Council on
Historic
Preservation
(ACHP) -
Iowa State
Historic
Preservation
Office
Permit or
Clearance
Required
Date Submitted!
To Be Submitted
To Agency
Date Permit or
Clearance Received,
Requested or
Expected
National
Historic
Preservation
Act (NHPA) 2013
Section 106 consultation to determine if
Submitted request Received May 28, for concurrence of 2013, based upon no affect May 15, May 15 Project alignment; expect updated concurrence
August 2013 the Project will impact receptors of
Submitted courtesy notification
Native
American cultural regarding meter station and pipeline relocation July 11,
2013 importance
NHPA Section Submitted request Received June 11,
106 for concurrence of 2013, based upon consultation to no affect May 15, determine if 2013 the Project will impact receptors of
Native
American cultural importance relocation July 11,
2013
May 15 Project alignment; received
Submitted courtesy July 17, 2013, based notification upon July 11, 2013, regarding meter station and pipeline
Project alignment
Section 106 Submitted request Received June 14,
Consultation, for concurrence of 2013, based upon
NHPA no affect May 15,
2013
May 15 Project alignment; received
Submitted notification regarding meter station and pipeline
July 26, 2013, based upon July 11, 2013,
Project alignment relocation July 11,
2013
Submitted revised Received July 19,
Unanticipated 2013
Discoveries Plan
June 21, 2013

Federal
Agency
ACHP -
Nebraska State
Historical
Society
National Park
Service (NPS)
Natural
Resources
Conservation
Service
(NRC S)
U.S. Army
Corp of
Engineers
(USACE)—
Omaha District
Permit or
Clearance
.
Required
Date Submitted!
.
To Be Submitted
To Agency
Date Permit or
Clearance Received,
Requested or
Expected
Section 106 Submitted request Received July 17,
Consultation, for concurrence of 2013 based upon May
NHPA no affect May 15,
2013
15 and July 10 Project alignments
Submitted courtesy notification regarding meter station relocation
July 10, 2013
Submitted revised Received June 28,
Unanticipated
Discoveries Plan
2013
No permit required—
June 21, 2013
Consulted with NPS Approval received
May 15, 2013 June 10, 2013 based on May 15, 2013 consultation for protection of the Lewis Submitted and Clark notification
National regarding meter
Historic Trail station and pipeline
Project alignment; received July 26,
2013, based on July
11 Project alignment relocation July 11,
2013 and revised visual screening plan for Homer compressor station
No permit required - consultation
Consulted with
NRCS June 21,
2013, regarding for protection seed mixes and of sensitive restoration soil and prime farmland
Approval received
June 21 and July 22,
2013
Section 404 permit— nationwide
CWA and
Submitted Section
404 and Section 10 approval for Dodge permit applications County, Nebraska,
May 16, 2013
Section 10
Rivers and
Harbors Act and temporary
Received permit
June 19, 2013, and
Dakota and
Woodbury counties
July 2, 2013.
Received July 16,

Federal
Agency
Permit or
Clearance
Required
Date Submitted!
.
To Be Submitted
To Agency use or occupation permit to repair rock
Submitted notification regarding meter station and pipeline structures on relocation July 11, the Missouri 2013
River
Date Permit or
Clearance Received,
Requested or
Expected
2013, based on July
11 Project alignment
U.S. Fish and Delegated to Endangered
Wildlife USFWS Species Act
Service
(USFWS) -
Rock Island
Field Office
Nebraska
Field Office
(ESA) - consultation clearance request for
Iowa
Submitted request Received July 11, for concurrence of 2013 from USFWS no affect May 15,
2013
Submitted notification
Nebraska Field Office based on July 11,
2013 Project alignment regarding meter station and pipeline relocation July 11,
2013
Delegated to Migratory Bird Submitted request Received July 11,
USFWS Treaty Act for concurrence of 2013 from USFWS
Nebraska (MBTA) - no affect May 15, Nebraska Field Office
Field Office protective measures
2013
Submitted notification regarding meter station and pipeline based on July 11,
2013 Project alignment
USFWS -
Nebraska Field
Office
ESA - consultation clearance request for
Nebraska
MBTA protective measures relocation July 11,
2013
Submitted request Received July 11, for concurrence of 2013 no affect May 15,
2013
Submitted notification regarding meter station and pipeline relocation July 11,
2013
Submitted request Received July 11, for clearance May 2013
15, 2013

Federal
Agency
Permit or
Clearance
Required
Date Permit or
Date Submitted!
To Be Submitted Clearance Received,
To Agency
Requested or
Expected
Submitted notification regarding meter station and pipeline relocation July 11,
2013

smmlr
E- - I

Description remont Compressor Station
Cc.npressor Station
C-Line Extension
CF Industries Branch Line
CF Industries Tie-over Branch Line
CF Industries Meter Station
Exhibit K - Cost Summary of Project Estimates
Total Cost
$18,015,126
$32,923,975
$3,438,252
$1 5,034,505
S75 1.433
$717,121
Right of
Way
$161,000
$265,650
$177,650
$1,492,970
$13,750
$0
$10,000
$10,000
$14,000
$161,000
$6,500
$0
Materials
$7.719,337
$16,343,485
$812,058
$1,833,491
$190,290
$238,634
Labor
$5,876,537
$10,135,202
$1,577,075
$7,267,880
$365,284
$294,743
Engineering &
Inspection
$1,315,500
$1,659,250
$181,580
$762,340
$43,550
$64,000
Northern Natural Gas Company
Exhibit K
Page 1 of I
$99,000
$108,900
$96,503
$1,021,680
$0
$0
Overheads
$1,223,669
$2,455,506
$160,569
$584,517
$30,936
$46,246
AFUDC
$796,892
$1,519,311
$162,809
$682,983
$36,148
$13,160
Contingencies
$813,192
$426,671
$256,008
$1,227,644
$64,974
$60,338
GRAND TOTAL
2
Taxes are included in total cost of materials
Freight cost are included in total cost of materials
I
$70,880,412
I
$2,111,020 I $201,500 I $27,137,295 j $25,516,720 I $4,026,220 I $0 I $0

I

Exhibit N
Page lof7
LINE
NO. DESCRIPTION
I INCREMENTAL REVENUES I!
2 INCREMENTAL COST OF SERVICE 1/
3 DIFFERENCE
NORTHERN NATURAL GAS COMPANY
West Leg Expansion
Estimated Incremental Revenue
(IN $000)
$
$
Year 1
7,605
12,494
(4,889)
$
$
Year 2
20,154
12,045
8,109
11 Includes revenues and costs for associated automatic blanket and Section 2.55(a) projects.
-
$
$
Year 3
24,486
11,635
12,851
$
$
Year 4
24,486
11,260
13,226
$
$
Year 5
24,486
11,012
13,474

Exhibit N
Page 2 of 7
Line
No. Description
I
2
3
6
7
4
5
Operating Expenses 1!
Depreciation and
Amortization Expenses 21
Taxes
Federal Income Tax 3!
State Income Tax 41
Other 5/
8 Return @ 9.39% 61
9 Total Cost of Service
1/ Incremental O&M
21 From Exhibit N, Page 3, Line 14
31 From Exhibit N, Page 7, Line 12
41 From Exhibit N, Page7, Line 15
5/ From Exhibit N, Page 4, Line 2
61 From Exhibit N, Page 5, Line 5
West Leg Expansion
Estimated Incremental Cost of Service
($000)
$
Year 1
(1)
957,772
$1,136,328
$
Year 2
(2)
981,716
$1,136,328
$
$
$
2,497,955
477,445
512,803
$ 6,911,342
$ 12,493,645
$
$
$
2,378,875
454,684
512,803
$ 6,580,598
$ 12,045,005
$
Year 3
(3)
1,006,259
$1,136,328
$
$
$
2,269,371
433,755
512,803
6,276,454 $
$ 11,634,971
$
Year 4
(4)
1,031,416
$1,136,328
$
$
$
2,168,437
414,463
512,803
$ 5,996,111
$ 11,259,557
$
Year 5
(5)
1,153,371
$1,136,328
$
$
$
2,075,265
396,654
512,803
$ 5,737,327
$ 11,011,749

Exhibit N
Page 3of7
Line
No. Description
Rate 1!
Depreciation Rate
4
5
2
3
6
7
Capital Investments 21
Compression Facilities
Town Border Stations
Main Line Extension
Meter Stations
Underground Storage
8
9
Branch Line Loops
Sub-total
10 CIAC
11 Total
NORTHERN NATURAL GAS COMPANY
West Leg Expansion
Estimated Incremental Depreciation Expense
($000)
Months in
Service
Year I Year I Year 2
(1) (2)
1.50%
$
$
$
$
$
$
$
$
$
50,938,094
6,035,998
2,995,199
15,785,938
75,755,229
75,755,229
$
$
$
$
$
$
$
$
$
50,938,094
6,035,998
2,995,199
15,785,938
75,755,229
75,755,229
Year 3
(3)
$
$
$
$
$
$
$
$
$
50,938,094
6,035,998
2,995,199
15,785,938
75,755,229
75,755,229
Year 4
(4)
Year 5
(5)
$
$
$
$
$
$
$
$
$
50,938,094
6,035,998
2,995,199
15,785,938
75,755,229
75,755,229
$
$
$
$
$
$
$
$
$
50,938,094
6,035,998
2,995,199
15,785,938
75,755,229
75,755,229
Depreciation and
Amortization Expense
12 Depreciation - 1.50% 12 $1,136,328 $1,136,328 $1,136,328 $1,136,328
11 Depreciation rate of 1.50% was approved in NNG's Rate Case settlement in Docket No. RPO4-155.
21 The total of $75,755,229 is comprised of $70,880,412 from Exhibit K, plus $4,874,817 for associated automatic blanket and Section 2.55(a) projects.
$1,136,328

Exhibit N
Page 4of7
Line
No. Description
I Ad Valorem Taxes
2 Total Taxes - Other
West Leg Expansion
Estimated Incremental Taxes Other
($000)
$
Year 1
(1)
512,803
$512,803
$
Year 2
(2)
512,803
$512,803
$
Year 3
(3)
512,803
$512,803
$
Year 4
(4)
512,803
$512,803
$
Year 5
(5)
512,803
$512,803

Exhibit N
Page 5 of 7
Line
No. Description
I Plant 11
Less:
2
3
Accumulated Provision for
Depreciation and Amort.
Accumulated Deferred
Income Taxes
4 Total Rate Base
West Leg Expansion
Estimated Return
($000)
$
Year 1
(1)
75,755,229 $
Year 2
(2)
75,755,229
$
$
($1,136,328)
(1,043,286)
73,575,614
$
$
($2,272,657)
(3,427,939)
70,054,633
5
Total Rate of
Return @ 9.39% 21 $ 6,911,342 $ 6,580,598
$
Year 3
(3)
75,755,229
$
$
($3,408,985)
(5,529,415)
66,816,828
$ 6,276,454
$
Year 4
(4)
75,755,229
$
$
($4,545,314)
(7,377,521)
63,832,394
$
Year 5
(5)
75,755,229
$
$
($5,681,642)
(8,996,105)
61,077,482
$ 5,996,111 $ 5,737,327
6 Return on Equity
7 Return on Debt
8 Total Return on Rate Base
$
$
$
4,621,215
2,290,127
6,911,342
$
$
$
4,400,066
2,180,532
6,580,598
$
$
$
4,196,702
2,079,752
6,276,454
$
$
$
4,009,253
1,986,858
5,996,111
$
$
$
3,836,219
1,901,108
5,737,327
11 The total of $75,755,229 is comprised of $70,880,412 from Exhibit K, plus $4,874,817 for associated automatic blanket and Section 2.55(a) projects.
21 The 9.39% Rate of Return is based on a pre-tax return of 13.42% as stipulated in NNG's Rate Case settlement In Docket No. RPO4-155.

Exhibit N
Page 6of7
Line
No. Description
I Tax Plant (Excluding CIAC)
2 Plant Addition
3 Total Plant in Service
6 Accumulated Deferred Tax %
7 Accumulated Tax Depreciation %
9 Accumulated Tax Depreciation
Tax Revenue (CIAC)
12 Acumulated Book Depreciation %:
13 Accumulated Book Depreciation % 11
15 Accumulated Book Depreciation
18 Accumulated Excess Tax Depreciation
19 Effective Tax Rate 21
20 Total end of year Accumulated Deferred
21 Taxes Balance - Credit
NORTHERN NATURAL GAS COMPANY
West Leg Expansion
Estimated Incremental Deferred Taxes
$
$
$
Year 1
(1)
75,755,229
-
75,755,229
5.00%
3,787,761
3,787,761
$
1.50%
1,136,328
(2,651,433)
39.348%
$ (1,043,286)
$
$
$
Year 2
(2)
75,755,229
75,755,229
-
14.50%
10,984,508
10,984,508 -
$
$
$
Year 3
(3)
75,755,229
75,755,229
-
23.05%
17,461,580
17,461,580
$
3.00%
2,272,657
(8,711,851) $
4.50%
3,408,985
(14,052,595)
$ (3,427,939) $ (5,529,415)
$
$
$
Year 4
(4)
75,755,229
75,755,229
-
30.75%
23,294,733
23,294,733 -
$
$
$
Year 5
(5)
75,755,229
75,755,229
-
37.68%
28,544,570
28,544,570
$
6.00%
4,545,314
(18,749,419) $
7.50%
5,681,642
(22,862,928)
$ (7,377,521) $ (8,996,105)
11 The 1.50% depreciation rate was approved in NNG's Rate Case settlement in Docket No. RPO4-155.
21 Includes composite state income tax rate of 6.6897%.

Exhibit N
Page 7 of 7
7
8
5
6
9
Line
No.
1
2
3
4
10
11
12
13
14
15
Description
Return on Equity 1/
Return on Debt
1!
NORTHERN NATURAL GAS COMPANY
West Leg Expansion
Estimated Federal and State Income Taxes
($000)
$
$
Year 1
(1)
4,621,215
2,290,127
$
$
Year 2
(2)
4,400,066
2,180,532
Total Return $ 6,911,342 $ 6,580,598
Less:
Interest expense
Other Adjustments:
Amortization of AFUDC Equity 2/
Subtotal
Taxable Income After Adjustments
Federal Income Tax (53.8462% of line 7)
Taxable Income Before Income Taxes
$
$
$
$
$
$
(2,290,127)
17,843
(2,272,284)
4,639,058
2,497,957
7,137,014
$
$
$
$
$
$
(2,180,532)
17,843
(2,162,689)
4,417,909
2,378,876
6,796,785
Federal Income Tax Applicable to
Common Equity
Other Tax Adjustments
Total Federal Income Tax
$
$
$
2,488,347
9,608
2,497,955
$
$
$
2,369,266
9,608
2,378,875
State Income Tax Applicable to:
Common Equity
Other Tax Adjustments
Total State Income Tax
(6.6897% of Line 9) 31
$
$
$
475,384
1,836
477,445
$
$
$
452,635
1,836
454,684
$
$
$
$
$
$
$
$
$
Year 3
(3)
4,196,702
2,079,752
6,276,454
$ (2,079,752)
$
$
$
$
$
17,843
(2,061,909)
4,214,545
2,269,372
6,483,918
2,259,763
9,608
2,269,371
431,715
1,836
433,755
$
$
$
$
$
$
Year
(4)
4,009,253
1,986,858
5,996,111
$ (1,986,858)
$
$
$
$
$
17,843
(1,969,015)
4,027,096
2,168,438
6,195,534
$
$
$
2,158,829
9,608
2,168,437
412,432
1,836
414,463
$
$
$
$
$
$
$
$
$
Year
(5)
3,836,219
1,901,108
5,737,327
$ (1,901,108)
$
$
$
$
$
17,843
(1,883,265)
3,854,062
2,075,266
5,929,328
2,065,657
9,608
2,075,265
394,632
1,836
396,654
If The 9.39% Rate of Return is based on a pre-tax return of 13.42% as stipulated in NNG's Rate Case settlement in Docket No. RPO4-155.
2/ AFUDC Equity is taxed as it is recovered.
3/ Northern's composite state income tax rate of 6.6897% is the rate underlying NNG's rate case settlement in Docket No. RPO4-155.

I - - I

Exhibit P
NORTHERN NATURAL GAS COMPANY
PROJECT - West Leg 2014
RATE COMPARISON
RATE SCHEDULE
TF BASE SUMMER
TF VARIABLE/TIX SUMMER
TF BASE WINTER
TF VARIABLE WINTER
TF5/TFX WINTER
RPO4-155 Settlement
Base Rates 11 Adjusted Rates 21
$5.683
$5.683
$10230
$13.866
$15153
$5488
$5.488
$9879
$13392
$14636
Rate Difference
($0195)
($0195)
($0351)
($0474)
($0517)
Percent of Change
-3.4%
-3-4%
-3.4%
-3-4%
-3.4%
ASSUMPTIONS:
1/ RPO4-155 Settlement Base Rates
21 Year I COS = $12.5m
Methodology based on Northerns RPO4-155 Rate Case Settlement.