20230504Settlement Agreement.pdf

STIPULATION AND SETTLEMENT PAGE 1 OF 9
Preston N. Carter, ISB No. 8462
Morgan D. Goodin, ISB No. 11184
Blake W. Ringer, ISB No. 11223
Givens Pursley LLP
601 W. Bannock St.
Boise, Idaho 83702
Telephone: [phone]
Facsimile: [phone]
[e-mail]
[e-mail]
[e-mail]
Attorneys for Intermountain Gas Company
BEFORE THE PUBLIC UTILITIES COMMISSION
IN THE MATTER OF THE APPLICATION
OF INTERMOUNTAIN GAS COMPANY
FOR AUTHORITY TO INCREASE ITS
RATES AND CHARGES FOR NATURAL
GAS SERVICE IN THE STATE OF IDAHO
Case No. INT-G-22-07
STIPULATION AND SETTLEMENT
STIPULATION AND SETTLEMENT
This Stipulation and Settlement (“Stipulation”) is entered into by and among
Intermountain Gas Company (“Intermountain” or “Company”), Staff for the Idaho Public Utilities
Commission (“Staff”), the Alliance of Western Energy Consumers (“AWEC”), and the Idaho
Conservation League (“ICL”) (collectively, “Parties,” individually, “Party”).
INTRODUCTION
The terms and conditions of this Stipulation are set forth below. The Parties agree that this
Stipulation represents a reasonable compromise of the issues raised in this proceeding. The
Parties recommend that the Idaho Public Utilities Commission (“Commission”) approve the
Stipulation, without change, pursuant to Commission Rules of Procedure 271, 272, and 274,
IDAPA 31.01.01.271, 272, and 274.
RECEIVED
Thursday, May 4, 2023 3:07:04 PM
IDAHO PUBLIC
UTILITIES COMMISSION
STIPULATION AND SETTLEMENT PAGE 2 OF 9
BACKGROUND
On December 1, 2022, Intermountain Gas filed a general rate case application requesting
authority to increase rates by approximately $11.3 million, or 10.3%, with a proposed effective
date of January 1, 2023 (“Application”).
On December 21, 2022, the Commission issued a Notice of Application, Notice of
Suspension of Proposed Effective Date, and Notice of Intervention Deadline. Order No. 35640.
AWEC, ICL, and the City of Boise intervened. See Order Nos. 35632, 35653, and 35664.
On March 6, 2023, the Commission scheduled three public workshops—one in Pocatello,
one in Twin Falls, and one in Boise—set a deadline for Staff and Intervenor testimony, and set a
deadline for the Company’s rebuttal testimony.
The scheduled customer workshops were held on March 15 in Pocatello and Twin Falls
and on March 21 in Boise.
From shortly after the Application was filed, Staff and AWEC propounded numerous
production requests, which Intermountain Gas responded to. Staff also conducted a site visit to
Intermountain Gas, during which Staff reviewed documents and spoke to Company employees to
answer questions regarding the Application.
On March 30 and 31, 2023, the Parties met for two settlement conferences. At the second
settlement conference, the Parties agreed in principle to the terms set forth in this Stipulation.
On April 18, 2023, the Commission vacated the testimony deadlines to allow the Parties
to present this Settlement to the Commission for its review. Order No. 35746.
As a compromise of positions in this proceeding, and for the mutual promises and
consideration set forth below, the Parties stipulate and agree to the following terms:
STIPULATION AND SETTLEMENT PAGE 3 OF 9
TERMS OF THE SETTLEMENT
1.Revenue Requirement. The Parties agree that Intermountain Gas shall be allowed to
implement revised tariff schedules designed to recover $3.05 million in revenue
requirement (“Revenue Requirement”). This reflects an overall increase of approximately
2.75% as illustrated in Exhibit 1.
2.Components of Revenue Requirement. The Parties agree that the Revenue Requirement
includes the following components:
a. Return on Equity: A return on equity of 9.5%;
b.Rate Base: A total rate base of $385,288,577 as shown on Exhibit No. 1, Column
(d), Line 38, which includes the following reductions at the indicated values:
i.RNG Projects: Reduction of $17,580;
ii.Cloverdale Project: Reduction of $50,670; and
iii.Burley Land: Reduction of $197,715. The Burley Land will be moved to
Account 121 – Nonutility Property until it becomes used and useful.
c.Rate case expenses and amortization: The Company shall amortize, over a period
of five years, rate case expenses of $449,635, for an amortization of $89,927 per
year for five years..
3.Cost of Service, Rate Design and Rate Spread. The Parties agree to accept the class
revenue apportionment proposed by the Company. An updated Proposed Class Revenue
Apportionment table outlining the agreed-upon revenue allocation is attached as Exhibit 2.
The Revenue Requirement shall be recovered as follows:
a.The customer charge for residential customers shall be increased to $8.00. The
distribution rate will decrease as a result of increased recovery from the customer
charge.
STIPULATION AND SETTLEMENT PAGE 4 OF 9
b.The customer and demand charges for the remaining customer classes will be as
originally proposed by the Company, and as illustrated in Exhibit 3. For these
classes, changes to the rate design based on the revenue requirement contained in
this settlement have been applied to the distribution rate.
c.Attached Exhibit 3 illustrates bill impacts resulting from the proposed Settlement.
d.Attached Exhibit 4 are tariff sheets demonstrating the changes to the Company’s
tariffs that will occur if the Settlement is approved.
4.Billing Determinants. The Parties agree that the billing determinants shall be as
proposed by the Company in its Application and Testimony.
5.Information Regarding Allocation Methodology. During the Company’s next general
rate case, the Company will provide information regarding the allocation of costs and
expenses from its parent company to Intermountain, including testimony documenting and
describing the methodologies used to allocate expenses to the Company from the
Company’s parent company or from any other affiliate. This information will be provided
through workpapers detailing the calculations for the allocation factors used, and
demonstrating the costs being allocated to the Company for each allocation factor.
Intermountain will provide this information to Staff within seven (7) days of filing the
Application and to any intervening Party, upon request, within seven (7) days of a
Commission order granting intervention to such Party.
6.Parent Company/Affiliate Company Information. Prior to filing the Company’s next
general rate case, the Company and Staff agree to meet to discuss protocols for providing
access to relevant information of the Company’s parent company, or any affiliate that
engages directly in any transaction with the Company which results in expenses being
STIPULATION AND SETTLEMENT PAGE 5 OF 9
incurred, allocated, or otherwise attributed to the Company as provided by Idaho Code
§ 61-610(1).
7.Workshop Regarding Weather Normalization Methodology. Prior to filing the
Company’s next general rate case, the Company and Staff agree to hold a workshop to
discuss methodology for weather normalization to be used in the Company’s next general
rate case.
8. Other Issues. The Parties agree to accept the Company’s position, as set forth in the
Application and Testimony, related to the Company’s proposals on in-person pay station
transaction fees and non-utility LNG sales credits, as set forth in the Direct Testimony and
Exhibits of Ms. Blattner.
GENERAL PROVISIONS
9.The Parties agree that this Stipulation represents a compromise of the positions of the
Parties on all issues in this proceeding. Other than the above-referenced positions, any
testimony filed in support of the approval of this Stipulation, and except to the extent
necessary for a Party to explain before the Commission its own statements and positions
with respect to the Stipulation, none of the negotiations relating to this Stipulation shall be
admissible as evidence in this or any other proceeding regarding this subject matter.
10.The Parties submit this Stipulation to the Commission, and recommend that the
Commission approve the Stipulation in its entirety pursuant to Commission Rule of
Procedure 274, IDAPA 31.01.01.274. The Parties shall support this Stipulation before the
Commission. No Party shall appeal any portion of this Stipulation or any Order approving
this Stipulation.
11.The Parties request that the Commission consider and approve this Stipulation as
expeditiously as possible, while allowing for sufficient public input. The Parties stand
STIPULATION AND SETTLEMENT PAGE 6 OF 9
ready to file testimony and otherwise participate in any hearing or other process
established by the Commission to consider this Stipulation.
12.The Parties agree that this Stipulation and the resulting rates are fair, just, and reasonable,
in the public interest, and otherwise in accordance with law or regulatory policy.
Accordingly, the Parties agree that the Stipulation should be accepted without
modification.
13.In the event the Commission issues an order that rejects any part of, or all of, this
Stipulation, or imposes any additional conditions on this Stipulation, each Party reserves
the right, upon written notice to the Commission and the other Parties, within fourteen
days of such order, to withdraw from this Stipulation. In such case, no Party shall be
bound by any term of this Stipulation.
14.No Party shall be bound by, benefitted by, or prejudiced by any position asserted in the
negotiation of this Stipulation, or while advocating for approval of this Stipulation.
Agreement to this Stipulation is not an acknowledgement by any Party of the
acknowledgement by any Party of the validity or invalidity of any particular method,
theory, or principle of regulation or cost recovery.
15.The obligations of the Parties under this Stipulation are subject to the Commission’s
approval of this Stipulation. If any person not a Party to this Stipulation appeals, seeks
judicial review of, or otherwise challenges this Stipulation, the Party’s obligations under
this Stipulation are subject to the Stipulation, or the Commission’s approval of this
Stipulation, being affirmed, upheld, or otherwise confirmed by the reviewing court.
STIPULATION AND SETTLEMENT PAGE 7 OF 9
DATED: April 28, 2023.
GIVENS PURSLEY LLP
Preston N. Carter
Attorney for Intermountain Gas Company
DATED: May __, 2023.
IDAHO PUBLIC UTILITIES COMMISSION
Claire Sharp
Deputy Attorney General
DATED: May 1, 2023.
CABLE HUSTON LLP
Chad M. Stokes
Attorney for Alliance of Western Energy Consumers
DATED: May __, 2023.
IDAHO CONSERVATION LEAGUE
Marie Kellner
Brad Keusinkveld
Attorneys for Idaho Conservation League
1
STIPULATION AND SETTLEMENT PAGE 8 OF 9
CERTIFICATE OF SERVICE
I certify that on May 4, 2023, a true and correct copy of the foregoing was served upon all
parties of record in this proceeding via electronic mail as indicated below:
Commission Staff Via Electronic Mail
Jan Noriyuki, Commission Secretary
Idaho Public Utilities Commission
11331 W. Chinden Blvd., Bldg. 8, Suite 201-A
Boise, ID 83714
[e-mail]
Claire Sharp
Deputy Attorney General
Idaho Public Utilities Commission
11331 W. Chinden Blvd., Bldg. 8, Suite 201-A
Boise, ID 83714
[e-mail]
Chad M. Stokes
Cable Huston LLP
1455 SW Broadway, Ste. 1500
Portland, OR 97201
Attorneys for Alliance of Western Energy
Consumers
[e-mail]
Marie Callaway Kellner
710 N. 6th Street
Boise, ID 83702
Attorneys for Idaho Conservation League
[e-mail]
Brad Heusinkveld
Idaho Conservation League, Energy Assoc.
710 N. 6th Street
Boise, ID 83702
[e-mail]
Darrell Early
Ed Jewell
Deputy City Attorney
Boise City Attorney’s Office
150 N. Capitol Blvd.
PO Box 500
Boise, ID 83701-0500
[e-mail]
[e-mail]
[e-mail]
STIPULATION AND SETTLEMENT PAGE 9 OF 9
Wil Gehl
Energy Program Manager
Boise City Dept. of Public Works
150 N. Capitol Blvd.
PO Box 500
Boise, ID 83701-0500
[e-mail]
Preston N. Carter
Exhibit No. 1 to Settlement Agreement
Case No. INT-G-22-07
Intermountain Gas Company

Revenue Requirement
(1 page)

Line Company Revenue Requirement
No.Description Proposal for Settlement Agreement
(a)(b)(c)(d)
1 Gas Operating Revenues 108,348,580$ 108,348,580$
2 Other Revenues 2,462,855 2,462,855
3 Total Operating Revenue 110,811,435 110,811,435
4 Operating Expenses
5 Cost of Gas --
6 Operation & Maintenance
7 Production 355,030 355,030
8 Natural Gas Storage, Terminaling, and Processing 1,352,876 1,352,876
9 Transmission 408,069 408,069
10 Distribution 26,317,161 26,317,161
11 Customer Accounts 9,870,252 9,870,252
12 Customer Service and Informational 220,322 220,322
13 Sales 1,616,702 1,616,702
14 Administrative and General 17,549,238 17,549,238
15 Other --
16 Depreciation and Amortization 22,007,089 22,007,089
17 Taxes Other Than Income Taxes
18 IPUC Fees 520,047 520,047
19 Payroll Taxes 2,220,444 2,220,444
20 Property Taxes 2,182,729 2,182,729
21 Franchise Taxes 18,505 18,505
22 Interest Expense --
23 Total Operating Expense
24 Before Income Taxes 84,638,464 84,638,464
25 Income Taxes 2,760,101 2,760,101
26 Settlement Adjustment -(1,182,100)
27 Total Operating Expenses 87,398,565 86,216,465
28 Net Operating Income 23,412,870$ 24,594,970$
29 Rate Base:
30 Gas Plant in Service [8]838,044,089$ 838,044,089$
31 Less Accumulated Depreciation and Amortization [9](402,468,377)(402,468,377)
32 Net Gas Plant in Service 435,575,712 435,575,712
33 Materials & Supplies Inventory [10]6,402,638 6,402,638
34 Gas Storage Inventory [11]3,128,475 3,128,475
35 Accumulated Deferred Income Taxes [12](48,135,738)(48,135,738)
36 Advances in Aid of Construction [13](11,416,545)(11,416,545)
37 Settlement Adjustment -(265,965)
38 Average Rate Base 385,554,542$ 385,288,577$
39 Operating Income at Present Rates 23,412,870$ 24,594,970$
40 Rate Base 385,554,542 385,288,577
41 Current Earned Rate of Return 6.07%6.38%
42 Cost of Capital 7.37%6.97%
43 Operating Income at Proposed Rates 28,415,370 26,854,614
44 Operating Income Deficiency 5,002,500 2,259,644
45 Gross Revenue Conversion Factor 1.34977 1.34977
46 Deficiency in Operating Revenue 6,752,224$ 3,050,000$
47 Percent Increase 6.09%2.75%
48 Total Base Rate Revenue Requirement 117,563,659$ 113,861,435$
49 Capital Structure
50 Total Debt 50%50%
51 Cost of Debt 4.448%2.22% 4.448%2.22%
52 Total Equity 50%50%
53 Return on Equity 10.30%5.15%9.50%4.75%
54 Total Cost of Capital 7.37%6.97%
Exhibit 1 to Settlement Agreement
INT-G-22-07
Revenue Requirement
Exhibit No. 2 to Settlement Agreement
Case No. INT-G-22-07
Intermountain Gas Company

Class Revenue Apportionment
(1 page)

Gas Service
Revenue
Base Rate Margin
at Proposed Calc Calc Calc
Customer Classes Margin Revenues
at Current Rates
Margin Revenues
at Proposed Rates
Proposed
Revenue
Change
Percent
Change
Increase
Relative to
System
Increase
Proposed
Parity Ratio
Residential Service 70,866,860$ 73,360,477$ 2,493,617$ 3.52%1.25 0.88
General Service 26,416,220 26,811,471 395,251 1.50%0.53 1.29
Large Volume 706,333 716,901 10,568 1.50%0.53 1.45
Transport Service(Interruptible)559,724 563,663 3,939 0.70%0.25 6.54
Transport Service(Firm)9,799,443 9,946,067 146,624 1.50%0.53 1.46
Subtotal 108,348,580$ 111,398,580$ 3,050,000$ 2.81%1.00
Other Revenues 2,462,855 2,462,855 --
Total System 110,811,435$ 113,861,435$ 3,050,000$ 2.75%1.00
Exhibit 2 to Settlement Agreement
INT-G-22-07
Class Revenue Apportionment
Exhibit No. 3 to Settlement Agreement
Case No. INT-G-22-07
Intermountain Gas Company

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A B C D E F G H I J K L M N
Current Rate Proposed Rate % Change Current Rate Proposed Rate % Change Current Proposed % Change
Residential Sales All Volume 0.16305$ 0.13301$ -18.4%5.50 8.00 45.5%na na na
Residential IS-R All Volume 0.16305$ 0.13301$ -18.4%5.50 8.00 45.5%na na na
Block 1 - First 200 therms per bill 0.18465$ 0.16885$ -8.6%
Block 2 - Next 1,800 therms per bill 0.16117$ 0.14738$ -8.6%
Block 3 - Next 8,000 therms per bill 0.13850$ 0.12665$ -8.6%
Block 4 - Over 10,000 therms per bill 0.06994$ 0.06396$ -8.6%
Block 1 - First 200 therms per bill 0.18465$ 0.16885$ -8.6%
Block 2 - Next 1,800 therms per bill 0.16117$ 0.14738$ -8.6%
Block 3 - Next 8,000 therms per bill 0.13850$ 0.12665$ -8.6%
Block 4 - Over 10,000 therms per bill 0.06994$ 0.06396$ -8.6%
Block 1 - First 10,000 therms per bill 0.13850$ 0.12665$ -8.6%
Block 2 - Over 10,000 therms per bill 0.06994$ 0.06396$ -8.6%
Block 1 - First 200 therms per bill 0.18465$ 0.16885$ -8.6%
Block 2 - Next 1,800 therms per bill 0.16117$ 0.14738$ -8.6%
Block 3 - Next 8,000 therms per bill 0.13850$ 0.12665$ -8.6%
Block 4 - Over 10,000 therms per bill 0.06994$ 0.06396$ -8.6%
Block 1 - First 250,000 therms per bill / Block 1 - First 35,000 therms per bill 0.03000$ 0.03000$ 0.0%
Block 2 - Next 500,000 therms per bill / Block 2 - Next 35,000 therms per bill 0.01211$ 0.01187$ -2.0%
Block 3 - Over 750,000 therms per bill / Block 3 - Over 70,000 therms per bill 0.00307$ 0.00735$ 139.4%
Block 1 - First 100,000 therms per bill 0.03853$ 0.03694$ -4.1%0.03612$
Block 2 - Next 50,000 therms per bill 0.01569$ 0.01504$ -4.1%0.01422$
Block 3 - Over 150,000 therms per bill 0.00578$ 0.00554$ -4.2%0.00472$
Block 1 - First 250,000 therms per bill 0.02395$ 0.02172$ -9.3%
Block 2 - Next 500,000 therms per bill 0.00847$ 0.00768$ -9.3%
Block 3 - Over 750,000 therms per bill 0.00260$ 0.00236$ -9.2%
0.32000$ 6.7%Transportion T-4 Firm n/a 150.00 n/a 0.30000$
0.32000$ 6.7%
Transportion T-3 Interruptible n/a 300.00 n/a na na na
Large Volume LV-1 n/a 150.00 n/a 0.30000$
na na
General Service IS-C 9.50 12.50 31.6%na na na
General Service GS-12 9.50 15.00 57.9%na
na na
General Service GS-60 9.50 15.00 57.9%na na na
General Service GS-1 9.50 15.00 57.9%na
Exhibit 3 to Settlement Agreement
INT-G-22-07
Summary of Proposed Rate Design
Customer Class Rate Schedule
Distribution Rate Customer Charge Demand Change
Billing Current Base Rates Proposed Base Rates Difference
Description Units Determinants Rates Revenues Rates Revenues $%
RS_RESIDENTIAL SERVICE
Customer Charge Cust Bills 4,423,383 5.50$ 24,328,607$ 8.00$ 35,387,064$ 11,058,458$ 45.46%
Distribution Charge Therms 284,776,158 0.16305$ 46,432,754$ 0.13301$ 37,878,077$ (8,554,677)$ -18.42%
Total Base Revenues 70,761,360$ 73,265,141$ 2,503,781$ 3.54%
IS-R_RESIDENTIAL INTERRUPTIBLE SNOWMELT SERVICE
Customer Charge Cust Bills 2,694 5.50$ 14,817$ 8.00$ 21,552$ 6,735$ 45.46%
Distribution Charge Therms 556,168 0.16305$ 90,683$ 0.13301$ 73,976$ (16,707)$ -18.42%
Total Base Revenues 105,500$ 95,528$ (9,972)$ -9.45%
Total Customer Charge Revenue Cust 24,343,424$ 35,408,616$ 11,065,193$ 45.46%
Total Distribution Charge Revenue Therms 46,523,437$ 37,952,053$ (8,571,384)$ -18.42%
Total Base Revenues 70,866,860$ 73,360,669$ 2,493,808$ 3.52%
Target Revenue
73,360,477$
Cust Bills 4,423,383 5.50$ 24,328,607$ 8.00$ 35,387,064$ $11,058,458 45.46%
Cust Bills 2,694 5.50$ 14,817 8.00$ 21,552 6,735 45.46%
Therms 285,332,326 0.16305$ 46,523,437$ 0.13301$ 37,951,861$ ($8,571,575)-18.42%
Total Base Revenues 70,866,860$ 73,360,477$ 2,493,617$ 3.52%
Target Revenue Difference 191$
Target Revenue Difference %0.00%
Exhibit 3 to Settlement Agreement
Proposed Rate Design and Proof of Revenue
Residential
Billing Current Base Rates Proposed Base Rates Difference
Description Units Determinants Rates Revenues Rates Revenues $%
GS-1_GENERAL SERVICE
Customer Charge Cust 420,100 9.50$ 3,990,950$ 15.00$ 6,301,500$ 2,310,550$ 57.90%
Block 1 - First 200 therms per bill Therms 38,586,470 0.18465$ 7,124,992$ 0.16885$ 6,515,325$ (609,666)$ -8.56%
Block 2 - Next 1,800 therms per bill Therms 68,565,605 0.16117 11,050,717 0.14738 10,105,199 (945,519)-8.56%
Block 3 - Next 8,000 therms per bill Therms 27,582,172 0.13850 3,820,131 0.12665 3,493,282 (326,849)-8.56%
Block 4 - Over 10,000 therms per bill Therms 5,222,540 0.06994 365,264 0.06396 334,034 (31,231)-8.55%
139,956,787 22,361,104$ 20,447,840$ (1,913,264)$ -8.56%
Total Base Revenues 26,352,054$ 26,749,340$ 397,286$ 1.51%
GS-1 IRRIGATION CUSTOMERS
Customer Charge Cust 105 9.50$ 998$ 15.00$ 1,575$ 577.50$ 57.90%
Block 1 - First 200 therms per bill Therms 10,699 0.18465$ 1,977$ 0.16885$ 1,807$ (170.04)$ -8.60%
Block 2 - Next 1,800 therms per bill Therms 47,686 0.16117 7,686 0.14738 7,028 (657.59)-8.56%
Block 3 - Next 8,000 therms per bill Therms 12,661 0.13850 1,754 0.12665 1,604 (150.03)-8.56%
Block 4 - Over 10,000 therms per bill Therms 0 0.06994 -0.06396 --0.00%
71,046 11,416$ 10,438$ (977.67)$ -8.56%
Total Base Revenues 12,413$ 12,013$ (400.17)$ -3.22%
GS-1 - COMPRESSED NATURAL GAS
Customer Charge Cust 6 9.50$ 57.00$ 15.00$ 90.00$ 33.00$ 57.90%
Block 1 - First 10,000 therms per bill Therms 0 0.13850$ -0.12665$ --0.00%
Block 2 - Over 10,000 therms per bill Therms 0 0.06994 -0.06396 --0.00%
0 -$ -$ -$ 0.00%
Total Base Revenues $57 $90 $33 57.90%
IS-C - SMALL COMMERCIAL INTERRUPTIBLE SNOWMELT SERVICE
Customer Charge Cust 638 9.50$ 6,061$ 12.50$ 7,975$ 1,914.0$ 31.58%
Block 1 - First 200 therms per bill Therms 51,865 0.18465$ 9,577$ 0.16885$ 8,757$ (819)$ -8.56%
Block 2 - Next 1,800 therms per bill Therms 162,461 0.16117 26,184 0.14738 23,944 (2,240)-8.56%
Block 3 - Next 8,000 therms per bill Therms 71,277 0.13850 9,872 0.12665 9,027 (845)-8.56%
Block 4 - Over 10,000 therms per bill Therms 0 0.06994 -0.06396 --0.00%
285,603 45,633$ 41,728$ (3,904)$ -8.56%
Total Base Revenues 51,694$ 49,703$ (1,990)$ -3.85%
General Service Total:
Customer Charge Cust 420,849 3,998,066$ 6,311,140$ 2,313,075$ 57.86%
Block 1 - First 200 therms per bill Therms 38,649,034 7,136,545 6,525,889 (610,656)-8.56%
Block 2 - Next 1,800 therms per bill Therms 68,775,752 11,084,587 10,136,170 (948,417)-8.56%
Block 3 - Next 8,000 therms per bill Therms 27,666,110 3,831,756 3,503,913 (327,843)-8.56%
Block 4 - Over 10,000 therms per bill Therms 5,222,540 365,264 334,034 (31,231)-8.55%
Total Base Revenues 26,416,218$ 26,811,146$ 394,928$ 1.50%
Target Revenue
26,811,471$
-9%
Customer Charge Cust 420,211 9.50$ 3,992,005$ 15.00$ 6,303,165$ 2,311,161$ 57.90%
Customer Charge - Interruptible Cust 638 9.50$ 6,061 12.50$ 7,975$ 1,914$ 31.58%
Block 1 - First 200 therms per bill Therms 38,649,034 0.18465$ 7,136,544$ 0.16885$ 6,526,029$ (610,515)$ -8.56%(141)
Block 2 - Next 1,800 therms per bill Therms 68,775,752 0.16117 11,084,588 0.14738 10,136,327 (948,261)-8.56%(156)
Block 3 - Next 8,000 therms per bill Therms 27,666,110 0.13850 3,831,756 0.12665 3,503,958 (327,798)-8.56%(46)
Block 4 - Over 10,000 therms per bill Therms 5,222,540 0.06994 365,264 0.06396 334,017 (31,247)-8.56%17
140,313,436 22,418,152$ 20,500,331$ (1,917,821)$ -8.56%
Total Base Revenues 26,416,218$ 26,811,471$ 395,254$ 1.50%-$
Target Revenue Difference (325)$
Target Revenue Difference %0.00%
Exhibit 3 to Settlement Agreement
Proposed Rate Design and Proof of Revenue
General Service
Billing Current Base Rates Proposed Base Rates Difference
Description Units Determinants Rates Revenues Rates Revenues $%
LV-1_LARGE VOLUME
Customer Charge Cust 423 -$ -$ 150.00$ 63,450$ 63,450$
Demand Charge Demand 931,110 0.3000$ 279,333$ 0.3200$ 297,955$ 18,622$ 6.67%
Overrun Demand Charge Demand 10,229 0.3000$ 3,069$ 0.3200 3,273$ 205$ 6.67%
Current
Block 1 - First 250,000 therms per bill Therms 14,130,994 0.03000$ 423,930$
Block 2 - Next 500,000 therms per bill Therms 0 0.01211$ -
Block 3 - Over 750,000 therms per bill Therms 0 0.00307$ -
423,930$
Proposed
Block 1 - First 35,000 therms per bill Therms 10,503,058 0.03000$ 315,092$ 74%
Block 2 - Next 35,000 therms per bill Therms 2,313,737 0.01187 27,472 16%
Block 3 - Over 70,000 therms per bill Therms 1,314,200 0.00735 9,659 9%
423,930$ 352,223$ (71,707)$ -16.92%
Total Base Revenues 706,332$ 716,901$ 10,570$ 1.50%
Target Revenue 716,901$
Target Revenue Difference -
Target Revenue Difference %0.00%
Exhibit 3 to Settlement Agreement
Proposed Rate Design and Proof of Revenue
Large Volume
Billing Current Base Rates Proposed Base Rates Difference
Description Units Determinants Rates Revenues Rates Revenues $%
T-3 - TRANSPORT INTERRUPTIBLE
Basic Service Charge Cust 90 -$ $0 300.00$ 27,000$ 27,000$ 0.00%
Block 1 - First 100,000 therms per bill Therms 8,192,079 0.03853$ 315,641$ 0.03694$ 302,636$ (13,005)$ -4.12%
Block 2 - Next 50,000 therms per bill Therms 3,576,050 0.01569 56,108 0.01504 53,796 (2,312)-4.12%
Block 3 - Over 150,000 therms per bill Therms 32,521,612 0.00578 187,975 0.00554 180,230 (7,745)-4.12%
All Volume 44,289,741 559,724$ 536,663$ (23,061)$ -4.12%
Total Base Revenues 559,724$ 563,663$ 3,939$ 0.70%
Target Revenue 563,663
Target Revenue Difference -
Target Revenue Difference %0.00%
Exhibit 3 to Settlement Agreement
Proposed Rate Design and Proof of Revenue
Transportation
Billing Current Base Rates Proposed Base Rates Difference
Description Units Determinants Rates Revenues Rates Revenues $%
Exhibit 3 to Settlement Agreement
Proposed Rate Design and Proof of Revenue
Transportation
T-4 - TRANSPORT FIRM
Basic Service Charge Cust 1224 -$ -$ 150.00$ 183,600$ 183,600$ 0.00%
Demand Charge Demand 17,860,920 0.3000$ 5,358,276$ 0.3200$ 5,715,494$ 357,218$ 6.67%
Overrun Demand Charge Demand 409,210 0.3000$ 122,763$ 0.3200$ 130,947$ 8,184$ 6.67%
Block 1 - First 250,000 therms per bill Therms 132,575,848 0.02395$ 3,175,192$ 0.02172$ 2,879,335$ (295,857)$ -9.32%
Block 2 - Next 500,000 therms per bill Therms 103,757,423 0.00847 878,825 0.00768 796,938 (81,887)-9.32%
Block 3 - Over 750,000 therms per bill Therms 101,687,336 0.00260 264,387 0.00236 239,752 (24,635)-9.32%
All Volumes 338,020,607 4,318,404$ 3,916,025$ (402,379)$ -9.32%
Total Base Revenues 9,799,443$ 9,946,067$ 146,624$ 1.50%
Target Revenue 9,946,067$
Target Revenue Difference -
Target Revenue Difference %0.00%
RS_RESIDENTIAL SERVICE
CURRENT PROPOSED
RATES RATES
CUSTOMER CHARGE 5.50$ 8.00$
DISTRIBUTION CHARGE $0.16305 $0.13301
COG $0.69115 $0.69115
EE $0.01564 $0.01564
THERM CURRENT PROPOSED AMOUNT PERCENT
$ $ $
Usage Per THERM
0 5.50 8.00 2.50 45.45%
10 14.20 16.40 2.20 15.49%
20 22.90 24.80 1.90 8.29%
30 31.60 33.19 1.60 5.06%
40 40.29 41.59 1.30 3.22%
50 48.99 49.99 1.00 2.04%
(1)60 57.69 58.39 0.70 1.21%
70 66.39 66.79 0.40 0.60%
80 75.09 75.18 0.10 0.13%
90 83.79 83.58 (0.20)-0.24%
100 92.48 91.98 (0.50)-0.54%
110 101.18 100.38 (0.80)-0.79%
120 109.88 108.78 (1.10)-1.01%
130 118.58 117.17 (1.41)-1.19%
140 127.28 125.57 (1.71)-1.34%
150 135.98 133.97 (2.01)-1.48%
160 144.67 142.37 (2.31)-1.59%
170 153.37 150.77 (2.61)-1.70%
180 162.07 159.16 (2.91)-1.79%
190 170.77 167.56 (3.21)-1.88%
200 179.47 175.96 (3.51)-1.95%
210 188.17 184.36 (3.81)-2.02%
220 196.86 192.76 (4.11)-2.09%
230 205.56 201.15 (4.41)-2.14%
240 214.26 209.55 (4.71)-2.20%
250 222.96 217.95 (5.01)-2.25%
260 231.66 226.35 (5.31)-2.29%
270 240.36 234.75 (5.61)-2.33%
280 249.06 243.14 (5.91)-2.37%
290 257.75 251.54 (6.21)-2.41%
300 266.45 259.94 (6.51)-2.44%
(1)Rs_Residential Service average monthly usage
DIFFERENCE
Exhibit 3 to Settlement Agreement
Bill Impact
Residential
Exhibit 3 to Settlement Agreement
Bill Impact
Residential
IS-R_RESIDENTIAL INTERRUPTIBLE SNOWMELT SERVICE
CURRENT PROPOSED
RATES RATES
CUSTOMER CHARGE 5.50$ 8.00$
DISTRIBUTION CHARGE $0.16305 $0.13301
COG $0.70905 $0.70905
EE $0.00000 $0.00000
DIFFERENCE
THERM CURRENT PROPOSED AMOUNT PERCENT
$ $ $
Usage Per THERM
0 5.50 8.00 2.50 45.45%
10 14.22 16.42 2.20 15.47%
20 22.94 24.84 1.90 8.28%
30 31.66 33.26 1.60 5.05%
40 40.38 41.68 1.30 3.22%
50 49.11 50.10 1.00 2.03%
60 57.83 58.52 0.70 1.21%
70 66.55 66.94 0.40 0.60%
80 75.27 75.36 0.10 0.13%
90 83.99 83.79 (0.20)-0.24%
100 92.71 92.21 (0.50)-0.54%
110 101.43 100.63 (0.80)-0.79%
120 110.15 109.05 (1.10)-1.00%
130 118.87 117.47 (1.41)-1.18%
140 127.59 125.89 (1.71)-1.34%
150 136.32 134.31 (2.01)-1.47%
160 145.04 142.73 (2.31)-1.59%
(1)170 153.76 151.15 (2.61)-1.70%
180 162.48 159.57 (2.91)-1.79%
190 171.20 167.99 (3.21)-1.87%
200 179.92 176.41 (3.51)-1.95%
210 188.64 184.83 (3.81)-2.02%
220 197.36 193.25 (4.11)-2.08%
230 206.08 201.67 (4.41)-2.14%
240 214.80 210.09 (4.71)-2.19%
250 223.53 218.52 (5.01)-2.24%
260 232.25 226.94 (5.31)-2.29%
270 240.97 235.36 (5.61)-2.33%
280 249.69 243.78 (5.91)-2.37%
290 258.41 252.20 (6.21)-2.40%
300 267.13 260.62 (6.51)-2.44%
(1)Is-R_Residential Interruptible Snowmelt Service average monthly usage
GS-1_GENERAL SERVICE
GS-1 IRRIGATION CUSTOMERS
CURRENT PROPOSED
RATES RATES
CUSTOMER CHARGE 9.50$ $15.00
Block 1 200 $0.18465 $0.16885
Block 2 1800 $0.16117 $0.14738
Block 3 8000 $0.13850 $0.12665
Block 4 10000 $0.06994 $0.06396
COG $0.70243 $0.70243
EE $0.00320 $0.00320
DIFFERENCE
THERM CURRENT PROPOSED AMOUNT PERCENT
$ $ $
Usage Per THERM
-9.50 15.00 5.50 57.89%
100 98.53 102.45 3.92 3.98%
200 187.56 189.90 2.34 1.25%
(1)300 274.24 275.20 0.96 0.35%
400 360.92 360.50 (0.42)-0.12%
500 447.60 445.80 (1.80)-0.40%
600 534.28 531.10 (3.18)-0.59%
(2)700 620.96 616.40 (4.56)-0.73%
800 707.64 701.70 (5.93)-0.84%
900 794.32 787.00 (7.31)-0.92%
1000 881.00 872.30 (8.69)-0.99%
1100 967.68 957.61 (10.07)-1.04%
1200 1,054.36 1,042.91 (11.45)-1.09%
1300 1,141.04 1,128.21 (12.83)-1.12%
1400 1,227.72 1,213.51 (14.21)-1.16%
1500 1,314.40 1,298.81 (15.59)-1.19%
1600 1,401.08 1,384.11 (16.97)-1.21%
1700 1,487.76 1,469.41 (18.35)-1.23%
1800 1,574.44 1,554.71 (19.72)-1.25%
1900 1,661.12 1,640.01 (21.10)-1.27%
2000 1,747.80 1,725.31 (22.48)-1.29%
2100 1,832.21 1,808.54 (23.67)-1.29%
2200 1,916.62 1,891.77 (24.85)-1.30%
2300 2,001.04 1,975.00 (26.04)-1.30%
2400 2,085.45 2,058.23 (27.22)-1.31%
2500 2,169.86 2,141.45 (28.41)-1.31%
2600 2,254.27 2,224.68 (29.59)-1.31%
2700 2,338.69 2,307.91 (30.78)-1.32%
2800 2,423.10 2,391.14 (31.96)-1.32%
2900 2,507.51 2,474.37 (33.15)-1.32%
3000 2,591.93 2,557.59 (34.33)-1.32%
(1)GS-1 Geneneral Service average monthly usage
(2)GS-1 Irrigation Service average monthly usage
Exhibit 3 to Settlement Agreement
Bill Impact
General Service
Exhibit 3 to Settlement Agreement
Bill Impact
General Service
GS-1 - COMPRESSED NATURAL GAS
CURRENT PROPOSED
RATES RATES
CUSTOMER CHARGE 9.50$ 15.00$
Block 1 10,000 $0.13850 $0.12665
Block 2 10,000 $0.06994 $0.06396
COG $0.70243 $0.70243
EE $0.00000 $0.00000
DIFFERENCE
THERM CURRENT PROPOSED AMOUNT PERCENT
$ $ $
Usage Per THERM
-9.50 15.00 5.50 57.89%
1000 850.43 844.08 (6.35)-0.75%
2000 1,691.36 1,673.16 (18.20)-1.08%
3000 2,532.29 2,502.24 (30.05)-1.19%
4000 3,373.22 3,331.32 (41.90)-1.24%
5000 4,214.15 4,160.40 (53.75)-1.28%
6000 5,055.08 4,989.48 (65.60)-1.30%
7000 5,896.01 5,818.56 (77.45)-1.31%
8000 6,736.94 6,647.64 (89.30)-1.33%
9000 7,577.87 7,476.72 (101.15)-1.33%
10000 8,418.80 8,305.80 (113.00)-1.34%
11000 9,191.17 9,072.19 (118.98)-1.29%
12000 9,963.54 9,838.58 (124.96)-1.25%
13000 10,735.91 10,604.97 (130.94)-1.22%
14000 11,508.28 11,371.36 (136.92)-1.19%
15000 12,280.65 12,137.75 (142.90)-1.16%
16000 13,053.02 12,904.14 (148.88)-1.14%
17000 13,825.39 13,670.53 (154.86)-1.12%
18000 14,597.76 14,436.92 (160.84)-1.10%
19000 15,370.13 15,203.31 (166.82)-1.09%
20000 16,142.50 15,969.70 (172.80)-1.07%
21000 16,914.87 16,736.09 (178.78)-1.06%
22000 17,687.24 17,502.48 (184.76)-1.04%
23000 18,459.61 18,268.87 (190.74)-1.03%
24000 19,231.98 19,035.26 (196.72)-1.02%
25000 20,004.35 19,801.65 (202.70)-1.01%
26000 20,776.72 20,568.04 (208.68)-1.00%
27000 21,549.09 21,334.43 (214.66)-1.00%
28000 22,321.46 22,100.82 (220.64)-0.99%
29000 23,093.83 22,867.21 (226.62)-0.98%
30000 23,866.20 23,633.60 (232.60)-0.97%
Exhibit 3 to Settlement Agreement
Bill Impact
General Service
IS-C - SMALL COMMERCIAL INTERRUPTIBLE SNOWMELT SERVICE
CURRENT PROPOSED
RATES RATES
CUSTOMER CHARGE 9.50$ 12.50$
Block 1 200 $0.18465 $0.16885
Block 2 1800 $0.16117 $0.14738
Block 3 8000 $0.13850 $0.12665
Block 4 10000 $0.06994 $0.06396
COG $0.70243 $0.70243
EE $0.00000 $0.00000
DIFFERENCE
THERM CURRENT PROPOSED AMOUNT PERCENT
$ $ $
Usage Per THERM
-9.50 12.50 3.00 31.58%
100 98.21 99.63 1.42 1.45%
200 186.92 186.76 (0.16)-0.09%
300 273.28 271.74 (1.54)-0.56%
(1)400 359.64 356.72 (2.92)-0.81%
500 446.00 441.70 (4.30)-0.96%
600 532.36 526.68 (5.68)-1.07%
700 618.72 611.66 (7.06)-1.14%
800 705.08 696.64 (8.43)-1.20%
900 791.44 781.62 (9.81)-1.24%
1000 877.80 866.60 (11.19)-1.28%
1100 964.16 951.59 (12.57)-1.30%
1200 1,050.52 1,036.57 (13.95)-1.33%
1300 1,136.88 1,121.55 (15.33)-1.35%
1400 1,223.24 1,206.53 (16.71)-1.37%
1500 1,309.60 1,291.51 (18.09)-1.38%
1600 1,395.96 1,376.49 (19.47)-1.39%
1700 1,482.32 1,461.47 (20.85)-1.41%
1800 1,568.68 1,546.45 (22.22)-1.42%
1900 1,655.04 1,631.43 (23.60)-1.43%
2000 1,741.40 1,716.41 (24.98)-1.43%
2100 1,825.49 1,799.32 (26.17)-1.43%
2200 1,909.58 1,882.23 (27.35)-1.43%
2300 1,993.68 1,965.14 (28.54)-1.43%
2400 2,077.77 2,048.05 (29.72)-1.43%
2500 2,161.86 2,130.95 (30.91)-1.43%
2600 2,245.95 2,213.86 (32.09)-1.43%
2700 2,330.05 2,296.77 (33.28)-1.43%
2800 2,414.14 2,379.68 (34.46)-1.43%
2900 2,498.23 2,462.59 (35.65)-1.43%
3000 2,582.33 2,545.49 (36.83)-1.43%
(1)Is-C - Small Commercial Interruptible Snowmelt Service average monthly usage
LV-1_LARGE VOLUME
Current Rates Current Block Proposed Rates Proposed Block
Customer Charge -$ 150.0$
Demand Charge 0.30000$ 0.32000$
Block 1 0.03000$ 250,000 0.03000$ 35,000
Block 2 0.01211$ 500,000 0.01187$ 35,000
Block 3 0.00307$ 750,000 0.00735$ 70,000
COG 0.64765$ 0.64765$
Customer Usage Scenario Monthly Average MDFQ Current Monthly
Bill
Proposed Monthly
Bill Difference $Difference %
High Use / High Demand 40,000 6,000 28,906$ 29,085$ 179$ 0.62%
High Use / Low Demand 40,000 2,000 27,706$ 27,805$ 99$ 0.36%
Avg. Use / Avg. Demand 30,000 3,000 21,230$ 21,440$ 210$ 0.99%
Low Use / High Demand 20,000 3,000 14,453$ 14,663$ 210$ 1.45%
Low Use / Low Demand 20,000 1,000 13,853$ 14,023$ 170$ 1.23%
Exhibit 3 to Settlement Agreement
Bill Impact
Large Volume
T-3 - TRANSPORT INTERRUPTIBLE
Current Block Current Proposed
Customer Charge -$ 300$
Demand Charge -$ -$
Block 1 100,000 0.03853$ 0.03694$
Block 2 50,000 0.01569$ 0.01504$
Block 3 150,000 0.00578$ 0.00554$
COG (0.00082)$ (0.00082)$
Monthly Average
Usage (Therm)MDFQ (Therm)Current Monthly
Bill
Proposed
Monthly Bill Difference $Difference %
---$ 300$ 300$ 0.00%
100,000 -3,771$ 3,912$ 141$ 3.74%
200,000 -4,763$ 4,859$ 97$ 2.03%
300,000 -5,259$ 5,331$ 73$ 1.38%
400,000 -5,755$ 5,803$ 49$ 0.84%
500,000 -6,251$ 6,275$ 25$ 0.39%
600,000 -6,747$ 6,747$ 1$ 0.01%
700,000 -7,243$ 7,219$ (24)$ -0.32%
800,000 -7,739$ 7,691$ (48)$ -0.61%
900,000 -8,235$ 8,163$ (72)$ -0.87%
1,000,000 -8,731$ 8,635$ (96)$ -1.09%
1,100,000 -9,227$ 9,107$ (120)$ -1.30%
1,200,000 -9,723$ 9,579$ (144)$ -1.48%
1,300,000 -10,219$ 10,051$ (168)$ -1.64%
1,400,000 -10,715$ 10,523$ (192)$ -1.79%
1,500,000 -11,211$ 10,995$ (216)$ -1.92%
1,600,000 -11,707$ 11,467$ (240)$ -2.05%
1,700,000 -12,203$ 11,939$ (264)$ -2.16%
1,800,000 -12,699$ 12,411$ (288)$ -2.26%
1,900,000 -13,195$ 12,883$ (312)$ -2.36%
2,000,000 -13,691$ 13,355$ (336)$ -2.45%
Exhibit 3 to Settlement Agreement
Bill Impact
Transportation
T-4 - TRANSPORT FIRM
Current Block Current Rates Proposed Rates
Customer Charge -$ 150.00$
Demand Charge 0.30000$ 0.32000$
Block 1 250,000 0.02395$ 0.02172$
Block 2 500,000 0.00847$ 0.00768$
Block 3 750,000 0.00260$ 0.00236$
COG (0.01968)$ (0.01968)$
Customer Usage Scenario
Monthly
Average Usage
(Therm)
MDFQ (Therm)Current
Monthly Bill
Proposed
Monthly Bill Difference $Difference %
High Use / High Demand 1,000,000 150,000 52,921$ 55,058$ 2,137$ 4.04%
High Use / Low Demand 1,000,000 50,000 24,889$ 25,026$ 138$ 0.55%
Avg. Use / Avg. Demand 300,000 30,000 14,821$ 14,974$ 153$ 1.03%
Low Use / High Demand 50,000 7,500 3,300$ 3,488$ 189$ 5.71%
Low Use / Low Demand 50,000 2,500 1,898$ 1,987$ 89$ 4.66%
Exhibit 3 to Settlement Agreement
Bill Impact
Transportation
Exhibit No. 4 to Settlement Agreement
Case No. INT-G-22-07
Intermountain Gas Company

Current Tariffs
Showing Proposed Price Changes
(8 pages)

l.P.U.C.Gas Tariff
Rate Schedules
Eleventh Revised Sheet No.1 (Page 1 of 1)
oNamtiity Intermountain Gas Company
Rate Schedule RS
RESIDENTIAL SERVICE
APPLICABILITY:
Applicable to any customer using natural gas for residential purposes.
RATE:
Monthly minimum chargeis the Customer Charge.
Customer Charge:$5.50 per bill
Per Therm Charge:$0.86984*
*Includes the following:
Cost of Gas:1)Temporarypurchased gas cost adjustment ($0.00057)
2)Weighted averagecost of gas $0.52808
3)Gas transportation cost $0.16364
Distribution Cost:$0.16305
EE Charge:$0.01564
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as providedfor in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
ENERGY EFFICIENCY CHARGE ADJUSTMENT:
This tariff is subject to an adjustment for costs related to the Company's Energy Efficiency program asprovidedforinRateScheduleEEC-RS. The Energy Efficiency Charge is separately stated on customer bills.
SERVICE CONDITIONS:
All natural gas service hereunderis subject to the General Service Provisions of the Company's Tariff,of
which this rate schedule is a part.
Issued by:Intermountain Gas Company
By:Lori A.Blattner Title:Director -Regulatory Affairs
Effective:February 1,2023
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Jan. 30, 2023 Feb. 1, 2023
Per O.N. 35673
Jan Noriyuki Secretary
Twelfth
$8.00
$0.13301
July 1, 2023
$0.83980
l.P.U.C.Gas Tariff
Rate Schedules
Sixty-SixthRevised Sheet No.3 (Page 1 of 2)
Intermountain Gas Company
Rate Schedule GS-1
GENERAL SERVICE
APPLICABILITY:
Applicable to customers whose requirements for natural gas do not exceed 2,000 therms per day,at any point
on the Company's distribution system.Requirements in excess of 2,000 therms per day may be allowed at
the Company's discretion.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge:$9.50 per bill
Per Therm Charge:Block One:First 200 therms per bill @ $0.89028*
Block Two: Next 1,800 therms per bill @ $0.86680*
Block Three:Next 8,000 therms per bill @ $0.84413*
Block Four:Over 10,000 therms per bill @ $0.77557*
*lncludes the following:
Cost of Gas:1)Temporarypurchased gas cost adjustment $0.01445
2)Weighted averagecost of gas $0.52808
3)Gas transportation cost $0.15990
Distribution Cost:Block One:First 200 therms per bill @ $0.18465
Block Two:Next 1,800 therms per bill @ $0.16117
Block Three:Next 8,000 therms per bill @ $0.13850
Block Four:Over 10,000 therms per bill @ $0.06994
EE Charge:$0.00320
Issued by:Intermountain Gas Company
By:Lori A.Blattner Title: Director -Regulatory Affairs
Effective:February 1,2023
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Jan. 30, 2023 Feb. 1, 2023
Per O.N. 35673
Jan Noriyuki Secretary
$15.00
Sixty-Seventh
$0.16885
$0.14738
$0.12665
$0.06396
July 1, 2023
$0.87448$0.85301$0.83228
--------------
--------------
----------------------------
$0.76959
l.P.U.C.Gas Tariff
Rate Schedules
Sixty-SixthRevised Sheet No.3 (Page 2 of 2)
oNam
it,Intermountain Gas Company
Rate Schedule GS-1
GENERAL SERVICE
(Continued)
For separately metered deliveries of gas utilized solely as Compressed Natural Gas Fuel in vehicularinternal
combustion engines.
Customer Charge: $9.50 per bill
Per ThermCharge: Block One: First 10,000 therms per bill @ $0.84093*
Block Two:Over 10,000 therms per bill @ $0.77237*
*lncludes the following:
Cost of Gas:1)Temporarypurchased gas cost adjustment $0.01445
2)Weighted averagecost of gas $0.52808
3)Gas transportation cost $0.15990
Distribution Cost: Block One: First 10,000 therms per bill @ $0.13850
Block Two:Over10,000 therms per bill @ $0.06994
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as providedfor in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
ENERGY EFFICIENCY CHARGE ADJUSTMENT:
This tariff is subject to an adjustment for costs related to the Company's Energy Efficiency program as
providedfor in Rate Schedule EEC-GS.The Energy Efficiency Charge is not applicable to gas utilized solely
as Compressed Natural Gas Fuel in vehicularinternal combustion engines.The Energy Efficiency Charge is
separately stated on customer bills.
SERVICE CONDITIONS:
1.All natural gas service hereunderis subject to the General Service Provisions of the Company'sTariff,
of which this rate schedule is a part.
Issued by:Intermountain Gas Company
By:Lori A.Blattner Title:Director -Regulatory Affairs
Effective:February 1,2023
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Jan. 30, 2023 Feb. 1, 2023
Per O.N. 35673
Jan Noriyuki Secretary
July 1, 2023
Sixty-Seventh
$15.00
$0.82908
$0.06396
$0.76639
$0.12665
l.P.U.C.Gas TariffRateSchedules
Twenty-Second Revised Sheet No.4 (Page 1 of 2)
oNaU
ity Intermountain Gas Company
Rate Schedule IS-R
RESIDENTIAL INTERRUPTIBLE SNOWMELT SERVICE
APPLICABILITY:
Applicable to any residential customer otherwise eligible to receiveserviceunder Rate Schedule RS whohasaddednaturalgassnowmeltequipmentafter6/1/2010.The intended use of the snowmelt equipment istomeltsnowand/orice on sidewalks,drivewaysor any other similar appurtenances.Any and all suchapplicationsmeeting the abovecriteria will be subject to service under Rate Schedule IS-R and will beseparatelyandindividuallymetered.All service hereunderis interruptible at the sole discretion of theCompany.
FACILITY REIMBURSEMENTCHARGE:
All new interruptible Snowmelt service customers are required to pay for the cost of the Snowmelt meter setandotherrelatedfacilityandequipmentcosts, prior to the installation of the meter set.Any request to alterthephysicallocation of the meter set and related facilities from Company'sinitial design may be grantedprovided,however,the Company can reasonably accommodate said relocation and Customer agrees topayallrelated costs.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge:$5.50 per bill
Per Therm Charge:$0.87210*
*lncludes the following:
Cost of Gas:1)Temporarypurchased gas cost adjustment $0.01733
2)Weighted averagecost of gas $0.52808
3)Gas transportation cost $0.16364
Distribution Cost:$0.16305
PURCHASED GAS COST ADJUSTMENT:
This tariffis subject to an adjustment for the cost of purchased gas as providedfor in Rate Schedule PGA.This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
Issued by:Intermountain Gas Company
By:Lori A.Blattner Title:Director -Regulatory AffairsEffective:February 1,2023
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Jan. 30, 2023 Feb. 1, 2023
Per O.N. 35673
Jan Noriyuki Secretary
Twenty-Third
$8.00
$0.13301
July 1, 2023
------------ $0.84206
l.P.U.C.Gas Tariff
Rate Schedules
Twenty-First Revised Sheet No.5 (Page 1 of 2)
oNao
y Intermountain Gas Company
Rate Schedule IS-C
SMALL COMMERICAL INTERRUPTIBLE SNOWMELT SERVICE
APPLICABILITY:
Applicable to any customer otherwise eligible to receive gas service under Rate Schedule GS-1 who has
added natural gas snowmelt equipment after 6/1/2010.The intended use of the snowmelt equipmentis to
melt snow and/or ice on sidewalks,driveways or any other similar appurtenances.Any and all such
applications meeting the above criteria will be subject to service under Rate Schedule IS-C and will beseparatelyandindividuallymetered.All service hereunder is interruptible at the sole discretion of theCompany.
FACILITY REIMBURSEMENT CHARGE:
All new interruptible Snowmelt service customers are required to pay for the cost of the Snowmelt meter set
and other related facility and equipment costs,prior to the installation of the meter set.Any request to alterthephysicallocationofthemeterset and related facilities from Company's initial design may be granted
provided,however,the Company can reasonably accommodate said relocation and Customer agrees to pay
all related costs.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge:$9.50 per bill
Per Therm Charge: Block One:First 200 therms per bill @ $0.88708*
Block Two:Next 1,800 therms per bill @ $0.86360*
Block Three:Next 8,000 therms per bill @ $0.84093*
Block Four:Over 10,000 therms per bill @ $0.77237*
*Includes the following:
Cost of Gas:1)Temporarypurchased gas cost adjustment $0.01445
2)Weighted averagecost of gas $0.52808
3)Gas transportation cost $0.15990
Distribution Charge:Block One:First 200 therms per bill @ $0.18465
Block Two:Next 1,800 therms per bill @ $0.16117
Block Three:Next 8,000 therms per bill @ $0.13850Block Four:Over 10,000 therms per bill @ $0.06994
Issued by:Intermountain Gas Company
By:Lori A.Blattner Title:Director -Regulatory AffairsEffective:February 1,2023
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Jan. 30, 2023 Feb. 1, 2023
Per O.N. 35673
Jan Noriyuki Secretary
July 1, 2023
$0.16885
$0.14738
$0.12665
$0.06396
$12.50
Twenty-Second
--------------------------------------------------------------
$0.87128$0.84981
$0.82908
$0.76639
l.P.U.C.Gas Tariff
Rate Schedules
Seventy-Third Revised Sheet No.7 (Page 1 of 2)
oNao
,,,Intermountain Gas Company
Rate Schedule LV-1
LARGE VOLUME FIRM SALES SERVICE
AVAILABILITY:
Available at any mutually agreeabledelivery point on the Company's distribution system to any existingcustomerreceivingserviceundertheCompany's rate schedule LV-1 or any customer not previouslyserved
under this schedule whose usage does not exceed 500,000 therms annually,upon execution of a one-year
minimum written servicecontract for firm sales service in excess of 200,000 therms per year.
MONTHLYRATE:
Demand Charge:$0.30000per MDFQ therm
Per Therm Charge: Block One: First 250,000 therms per bill @ $0.67765*
Block Two: Next 500,000 therms per bill @ $0.65976*
Block Three:Over 750,000 therms per bill @ $0.58325*
*lncludes the following:
Cost of Gas:1)Temporarypurchased gas cost adjustment
Block One and Two $0.03247BlockThree$0.05210
2)Weighted averagecost of gas $0.52808
3)Gas transportation cost (Block One and Twoonly)$0.08710
Distribution Cost:Block One: First 250,000 therms per bill @ $0.03000BlockTwo:Next 500,000 therms per bill @ $0.01211Block Three:Over 750,000 therms per bill @ $0.00307
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as providedfor in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
SERVICE CONDITIONS:
1.All natural gas service hereunder is subject to the General Service Provisions of the Company'sTariff,of which this Rate Schedule is a part.
2.The customer shall negotiate with the Company,a mutually agreeable Maximum Daily Firm Quantity(MDFQ), which will be stated in and in effect throughout the term of the service contract.
3.The monthly Demand Charge will be equal to the MDFQ times the Demand Charge rate. DemandCharge relief will be afforded to those LV-1 customers when circumstances impacted by forcemajeureeventspreventtheCompanyfromdeliveringnaturalgas to the customer's meter.
Issued by:Intermountain Gas Company
By:Lori A.Blattner Title:Director -Regulatory AffairsEffective:February 1,2023
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Jan. 30, 2023 Feb. 1, 2023
Per O.N. 35673
Jan Noriyuki Secretary
Seventy-Fourth
Customer Charge: $150.00 per bill
$0.01187
$0.00735
July 1, 2023
-------------
$0.32000
----------------------------
-----------------------------------------
---------------------------------
-----------
$0.65952
$0.65500
35,000
35,000
35,000
35,000
70,000
70,000
I.P.U.C. Gas TariffRate SchedulesTwenty-Second Revised Sheet No. 8 (Page 1 of 1)
Name Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: October 1, 2022
Rate Schedule T-3 INTERRUPTIBLE DISTRIBUTION TRANSPORTATION SERVICE
AVAILABILITY:
Available at any point on the Company's distribution system to any customer upon execution of a one year
minimum written service contract.
MONTHLY RATE:
Per Therm Charge: Block One: First 100,000 therms transported @ $0.03771* Block Two: Next 50,000 therms transported @ $0.01487* Block Three: Over 150,000 therms transported @ $0.00496*
*Includes temporary purchased gas cost adjustment of ($0.00082)
ANNUAL MINIMUM BILL:
The customer shall be subject to the payment of an annual minimum bill based on annual usage of 200,000 therms. The deficit usage below 200,000 therms shall be billed at the T-3 Block 1 rate.
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
SERVICE CONDITIONS:
1.All natural gas service hereunder is subject to the General Service Provisions of the Company'sTariff, of which this Rate Schedule is a part.
2.This service does not include the cost of the customer's gas supply or the interstate pipeline capacity.
The customer is responsible for procuring its own supply of natural gas and transportation to
Intermountain's distribution system under this Rate Schedule.
3.The customer understands and agrees that the Company is not responsible to deliver gas suppliesto the customer which have not been nominated, scheduled, and delivered by the interstate pipelineto the designated city gate.
4.The Company, in its sole discretion, shall determine whether or not it has adequate capacity toaccommodate transportation of the customer's gas supply on the Company's distribution system.
5.If requested by the Company, the customer expressly agrees to immediately curtail or interrupt its
operations during periods of capacity constraints on the Company’s distribution system.
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Sept. 27, 2022 Oct. 1, 2022
Per ON 35538
Jan Noriyuki Secretary
Twenty-Third
Customer Charge: $300 per bill
$0.03612$0.01422
$0.00472
July 1, 2023
I.P.U.C. Gas Tariff
Rate SchedulesTwenty-First Revised Sheet No. 9 (Page 1 of 2)
Name Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: October 1, 2022
Rate Schedule T-4 FIRM DISTRIBUTION ONLY TRANSPORTATION SERVICE
AVAILABILITY:
Available at any mutually agreeable delivery point on the Company's distribution system to any customer
upon execution of a one year minimum written service contract for firm distribution transportation service in
excess of 200,000 therms per year.
MONTHLY RATE:
Demand Charge: $0.28032 per MDFQ therm*
Per Therm Charge: Block One: First 250,000 therms transported @ $0.02395
Block Two: Next 500,000 therms transported @ $0.00847
Block Three: Over 750,000 therms transported @ $0.00260
*Includes temporary purchased gas cost adjustment of ($0.01968)
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA. This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
SERVICE CONDITIONS:
1.All natural gas service hereunder is subject to the General Service Provisions of the Company’sTariff, of which this Rate Schedule is a part.
2.This service does not include the cost of the customer’s gas supply of the interstate pipeline capacity.The customer is responsible for procuring its own supply of natural gas and transportation toIntermountain’s distribution system under this Rate Schedule.
3.The customer understands and agrees that the Company is not responsible to deliver gas suppliesto the customer which have not been nominated, scheduled, and delivered by the interstate pipelineto the designated city gate.
4.The customer shall negotiate with the Company, a mutually agreeable Maximum Daily Firm Quantity(MDFQ), which will be stated in and in effect throughout the term of the service contract.
5.The monthly Demand Charge will be equal to the MDFQ times the Demand Charge rate. DemandCharge relief will be afforded to those T-4 customers when circumstances impacted by force majeureevents prevent the Company from delivering natural gas to the customer’s meter.
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Sept. 27, 2022 Oct. 1, 2022
Per ON 35538
Jan Noriyuki Secretary
July 1, 2023
$0.02172
$0.00768
Twenty-Second
Customer Charge: $150.00 per bill
$0.30032
$0.00236
Exhibit No. 5 to Settlement Agreement
Case No. INT-G-22-07
Intermountain Gas Company

Proposed Tariffs
(8 pages)

I.P.U.C. Gas Tariff
Rate Schedules
Twelfth Revised Sheet No. 1 (Page 1 of 1)
Name
of Utility

Intermountain Gas Company

Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: July 1, 2023

Rate Schedule RS
RESIDENTIAL SERVICE

APPLICABILITY:

Applicable to any customer using natural gas for residential purposes.

RATE:

Monthly minimum charge is the Customer Charge.

Customer Charge: $8.00 per bill

Per Therm Charge: $0.83980*

*Includes the following:

Cost of Gas: 1) Temporary purchased gas cost adjustment ($0.00057)
2) Weighted average cost of gas $0.52808
3) Gas transportation cost $0.16364

Distribution Cost: $0.13301

EE Charge: $0.01564

PURCHASED GAS COST ADJUSTMENT:

This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.

ENERGY EFFICIENCY CHARGE ADJUSTMENT:

This tariff is subject to an adjustment for costs related to the Company’s Energy Efficiency program as
provided for in Rate Schedule EEC-RS. The Energy Efficiency Charge is separately stated on customer bills.

SERVICE CONDITIONS:

All natural gas service hereunder is subject to the General Service Provisions of the Company's Tariff, of
which this rate schedule is a part.
I.P.U.C. Gas Tariff
Rate Schedules
Sixty-Seventh Revised Sheet No. 3 (Page 1 of 2)
Name Intermountain Gas Company

Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: July 1, 2023
Rate Schedule GS-1 GENERAL SERVICE APPLICABILITY: Applicable to customers whose requirements for natural gas do not exceed 2,000 therms per day, at any point on the Company's distribution system. Requirements in excess of 2,000 therms per day may be allowed at the Company’s discretion. RATE: Monthly minimum charge is the Customer Charge. Customer Charge: $15.00 per bill Per Therm Charge: Block One: First 200 therms per bill @ $0.87448* Block Two: Next 1,800 therms per bill @ $0.85301* Block Three: Next 8,000 therms per bill @ $0.83228* Block Four: Over 10,000 therms per bill @ $0.76959* *Includes the following: Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445 2) Weighted average cost of gas $0.52808 3) Gas transportation cost $0.15990 Distribution Cost: Block One: First 200 therms per bill @ $0.16885 Block Two: Next 1,800 therms per bill @ $0.14738 Block Three: Next 8,000 therms per bill @ $0.12665 Block Four: Over 10,000 therms per bill @ $0.06396 EE Charge: $0.00320
I.P.U.C. Gas Tariff
Rate Schedules
Sixty-Seventh Revised Sheet No. 3 (Page 2 of 2)
Name Intermountain Gas Company

Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: July 1, 2023
Rate Schedule GS-1 GENERAL SERVICE (Continued) For separately metered deliveries of gas utilized solely as Compressed Natural Gas Fuel in vehicular internal combustion engines. Customer Charge: $15.00 per bill Per Therm Charge: Block One: First 10,000 therms per bill @ $0.82908* Block Two: Over 10,000 therms per bill @ $0.76639* *Includes the following: Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445 2) Weighted average cost of gas $0.52808 3) Gas transportation cost $0.15990 Distribution Cost: Block One: First 10,000 therms per bill @ $0.12665 Block Two: Over 10,000 therms per bill @ $0.06396 PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA. This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills. ENERGY EFFICIENCY CHARGE ADJUSTMENT: This tariff is subject to an adjustment for costs related to the Company’s Energy Efficiency program as provided for in Rate Schedule EEC-GS. The Energy Efficiency Charge is not applicable to gas utilized solely as Compressed Natural Gas Fuel in vehicular internal combustion engines. The Energy Efficiency Charge is separately stated on customer bills. SERVICE CONDITIONS: 1. All natural gas service hereunder is subject to the General Service Provisions of the Company's Tariff, of which this rate schedule is a part.
I.P.U.C. Gas Tariff Rate Schedules Twenty-Third Revised Sheet No. 4 (Page 1 of 2)
Name Intermountain Gas Company

Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: July 1, 2023

Rate Schedule IS-R
RESIDENTIAL INTERRUPTIBLE SNOWMELT SERVICE APPLICABILITY: Applicable to any residential customer otherwise eligible to receive service under Rate Schedule RS who has added natural gas snowmelt equipment after 6/1/2010. The intended use of the snowmelt equipment is to melt snow and/or ice on sidewalks, driveways or any other similar appurtenances. Any and all such applications meeting the above criteria will be subject to service under Rate Schedule IS-R and will be separately and individually metered. All service hereunder is interruptible at the sole discretion of the Company. FACILITY REIMBURSEMENT CHARGE: All new interruptible Snowmelt service customers are required to pay for the cost of the Snowmelt meter set and other related facility and equipment costs, prior to the installation of the meter set. Any request to alter the physical location of the meter set and related facilities from Company’s initial design may be granted provided, however, the Company can reasonably accommodate said relocation and Customer agrees to pay all related costs. RATE: Monthly minimum charge is the Customer Charge.
Customer Charge: $8.00 per bill Per Therm Charge: $0.84206*
*Includes the following: Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01733 2) Weighted average cost of gas $0.52808 3) Gas transportation cost $0.16364 Distribution Cost: $0.13301 PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA. This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.

I.P.U.C. Gas Tariff Rate Schedules Twenty-Second Revised Sheet No. 5 (Page 1 of 2)
Name Intermountain Gas Company

Issued by: Intermountain Gas Company By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: July 1, 2023

Rate Schedule IS-C SMALL COMMERICAL INTERRUPTIBLE SNOWMELT SERVICE APPLICABILITY: Applicable to any customer otherwise eligible to receive gas service under Rate Schedule GS-1 who has added natural gas snowmelt equipment after 6/1/2010. The intended use of the snowmelt equipment is to melt snow and/or ice on sidewalks, driveways or any other similar appurtenances. Any and all such applications meeting the above criteria will be subject to service under Rate Schedule IS-C and will be separately and individually metered. All service hereunder is interruptible at the sole discretion of the Company. FACILITY REIMBURSEMENT CHARGE: All new interruptible Snowmelt service customers are required to pay for the cost of the Snowmelt meter set
and other related facility and equipment costs, prior to the installation of the meter set. Any request to alter the physical location of the meter set and related facilities from Company’s initial design may be granted
provided, however, the Company can reasonably accommodate said relocation and Customer agrees to pay all related costs. RATE:
Monthly minimum charge is the Customer Charge.

Customer Charge: $12.50 per bill
Per Therm Charge: Block One: First 200 therms per bill @ $0.87128*
Block Two: Next 1,800 therms per bill @ $0.84981* Block Three: Next 8,000 therms per bill @ $0.82908*
Block Four: Over 10,000 therms per bill @ $0.76639*
*Includes the following: Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445 2) Weighted average cost of gas $0.52808 3) Gas transportation cost $0.15990 Distribution Charge: Block One: First 200 therms per bill @ $0.16885 Block Two: Next 1,800 therms per bill @ $0.14738 Block Three: Next 8,000 therms per bill @ $0.12665
Block Four: Over 10,000 therms per bill @ $0.06396

I.P.U.C. Gas Tariff Rate Schedules Seventy-Fourth Revised Sheet No. 7 (Page 1 of 2)
Name Intermountain Gas Company

Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: July 1, 2023

Rate Schedule LV-1 LARGE VOLUME FIRM SALES SERVICE AVAILABILITY:
Available at any mutually agreeable delivery point on the Company's distribution system to any existing customer receiving service under the Company’s rate schedule LV-1 or any customer not previously served
under this schedule whose usage does not exceed 500,000 therms annually, upon execution of a one-year minimum written service contract for firm sales service in excess of 200,000 therms per year. MONTHLY RATE: Customer Charge: $150.00 per bill Demand Charge: $0.32000 per MDFQ therm Per Therm Charge: Block One: First 35,000 therms per bill @ $0.67765* Block Two: Next 35,000 therms per bill @ $0.65952* Block Three: Over 70,000 therms per bill @ $0.65500* *Includes the following: Cost of Gas: 1) Temporary purchased gas cost adjustment $0.03247 2) Weighted average cost of gas $0.52808 3) Gas transportation cost $0.08710 Distribution Cost: Block One: First 35,000 therms per bill @ $0.03000 Block Two: Next 35,000 therms per bill @ $0.01187 Block Three: Over 70,000 therms per bill @ $0.00735 PURCHASED GAS COST ADJUSTMENT: This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA. This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills. SERVICE CONDITIONS: 1. All natural gas service hereunder is subject to the General Service Provisions of the Company's Tariff, of which this Rate Schedule is a part. 2. The customer shall negotiate with the Company, a mutually agreeable Maximum Daily Firm Quantity (MDFQ), which will be stated in and in effect throughout the term of the service contract. 3. The monthly Demand Charge will be equal to the MDFQ times the Demand Charge rate. Demand Charge relief will be afforded to those LV-1 customers when circumstances impacted by force majeure events prevent the Company from delivering natural gas to the customer’s meter.
I.P.U.C. Gas Tariff Rate Schedules Twenty-Third Revised Sheet No. 8 (Page 1 of 1)
Name Intermountain Gas Company

Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: July 1, 2023
Rate Schedule T-3 INTERRUPTIBLE DISTRIBUTION TRANSPORTATION SERVICE AVAILABILITY: Available at any point on the Company's distribution system to any customer upon execution of a one year minimum written service contract. MONTHLY RATE: Customer Charge: $300.00 per bill Per Therm Charge: Block One: First 100,000 therms transported @ $0.03612* Block Two: Next 50,000 therms transported @ $0.01422* Block Three: Over 150,000 therms transported @ $0.00472*

*Includes temporary purchased gas cost adjustment of ($0.00082) ANNUAL MINIMUM BILL:
The customer shall be subject to the payment of an annual minimum bill based on annual usage of 200,000 therms. The deficit usage below 200,000 therms shall be billed at the T-3 Block 1 rate.
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills. SERVICE CONDITIONS: 1. All natural gas service hereunder is subject to the General Service Provisions of the Company's Tariff, of which this Rate Schedule is a part.
2. This service does not include the cost of the customer's gas supply or the interstate pipeline capacity.
The customer is responsible for procuring its own supply of natural gas and transportation to
Intermountain's distribution system under this Rate Schedule. 3. The customer understands and agrees that the Company is not responsible to deliver gas supplies to the customer which have not been nominated, scheduled, and delivered by the interstate pipeline to the designated city gate. 4. The Company, in its sole discretion, shall determine whether or not it has adequate capacity to accommodate transportation of the customer's gas supply on the Company's distribution system.

5. If requested by the Company, the customer expressly agrees to immediately curtail or interrupt its
operations during periods of capacity constraints on the Company’s distribution system.

I.P.U.C. Gas Tariff
Rate Schedules Twenty-Second Revised Sheet No. 9 (Page 1 of 2)
Name Intermountain Gas Company

Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs Effective: July 1, 2023
Rate Schedule T-4 FIRM DISTRIBUTION ONLY TRANSPORTATION SERVICE
AVAILABILITY:
Available at any mutually agreeable delivery point on the Company's distribution system to any customer
upon execution of a one year minimum written service contract for firm distribution transportation service in
excess of 200,000 therms per year. MONTHLY RATE:
Customer Charge: $150.00 per bill
Demand Charge: $0.30032 per MDFQ therm*

Per Therm Charge: Block One: First 250,000 therms transported @ $0.02172
Block Two: Next 500,000 therms transported @ $0.00768
Block Three: Over 750,000 therms transported @ $0.00236

*Includes temporary purchased gas cost adjustment of ($0.01968)
PURCHASED GAS COST ADJUSTMENT: This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA. This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills. SERVICE CONDITIONS:
1. All natural gas service hereunder is subject to the General Service Provisions of the Company’s Tariff, of which this Rate Schedule is a part. 2. This service does not include the cost of the customer’s gas supply of the interstate pipeline capacity. The customer is responsible for procuring its own supply of natural gas and transportation to Intermountain’s distribution system under this Rate Schedule. 3. The customer understands and agrees that the Company is not responsible to deliver gas supplies to the customer which have not been nominated, scheduled, and delivered by the interstate pipeline to the designated city gate. 4. The customer shall negotiate with the Company, a mutually agreeable Maximum Daily Firm Quantity (MDFQ), which will be stated in and in effect throughout the term of the service contract. 5. The monthly Demand Charge will be equal to the MDFQ times the Demand Charge rate. Demand Charge relief will be afforded to those T-4 customers when circumstances impacted by force majeure events prevent the Company from delivering natural gas to the customer’s meter.