IGC GD 2022

NOTICE: This report is required by 49 CFR Part 191. Failure to report may result in a civil penalty OMB No.2137-0629 as OMB NO:2137-0629
provided in 49 USC 60122. EXPIRATION DATE: 5/31/2024
Initial Date 03/13/2023
Submitted:
U.S.Department of Transportation ANNUAL REPORT FOR CALENDAR
Pipeline and Hazardous Materials
YEAR 2022 Type
ert Submission INITIAL
Safety Administration GAS DISTRIBUTION SYSTEM
Date Submitted:
A federal agency may not conduct or sponsor,and a person is not required to respond to,nor shall a person be subject to a penalty for failure to comply with a collection of
information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control
Number for this information collection is 2137-0629. Public reporting for this collection of information is estimated to be approximately 16 hours per response,including the
time for reviewing instructions,gathering the data needed,and completing and reviewing the collection of information. All responses to this collection of information are
mandatory. Send comments regarding this burden estimate or any other aspect of this collection of information,including suggestions for reducing this burden to:Information
Collection Clearance Officer,PHMSA,Office of Pipeline Safety(PHP-30)1200 New Jersey Avenue,SE,Washington,D.C.20590.
Important. Please read the separate instructions for completing this form before you begin. They clarify the information requested and provide specific
examples. If you do not have a copy of the instructions,you can obtain one from the PHMSA Pipeline Safety Community Web Page at
http://www.phmsa.dot.gov/pipeline/library/forms.
PART A-OPERATOR INFORMATION (DOT use only 20230921-51470
1.Name of Operator INTERMOUNTAIN GAS CO
2.LOCATION OF OFFICE(WHERE ADDITIONAL INFORMATION MAY BE OBTAINED)
2a.Street Address 8113 W.GRANDRIDGE BLVD
2b.City and County KENNEWICK
2c.State WA
2d.Zip Code 99336
3.OPERATOR'S 5 DIGIT IDENTIFICATION NUMBER 8160
4.HEADQUARTERS NAME&ADDRESS
4a.Street Address 555 SOUTH COLE ROAD(POB 7608,83707)
4b.City and County BOISE
4c.State ID
4d.Zip Code 83709
5.STATE IN WHICH SYSTEM OPERATES ID
6.THIS REPORT PERTAINS TO THE FOLLOWING COMMODITY GROUP(Select Commodity Group based on the predominant gas carried and
complete the report for that Commodity Group.File a separate report for each Commodity Group included in this OPID.)
Natural Gas
7.THIS REPORT PERTAINS TO THE FOLLOWING TYPE OF OPERATOR(Select Type of Operator based on the structure of the company
included in this OP/D for which this report is being submitted.):
Investor Owned
PART B-SYSTEM DESCRIPTION
1.GENERAL
STEEL
UNPROTECTED CATHODICALLY PLASTIC CAST/ DUCTILE COPPER OTHER RECONDITION SYSTEM
PROTECTED WROUGHT IRON ED TOTAL
IRON CAST IRON
BARE COATED BARE COATED
MILES OF 0 0 1.25 2374.94 4779.29 0 0 0 0 0 7155.48
MAIN
NO.OF 0 0 0 71503 343872 0 0 0 0 0 415375
SERVICES
Form PHMSA F 7100.1-1 (rev 5-2021) Reproduction of this form is permitted Pg. 1 of 4

NOTICE: This report is required by 49 CFR Part 191. Failure to report may result in a civil penalty OMB No.2137-0629 as OMB NO:2137-0629
provided in 49 USC 60122. EXPIRATION DATE: 5/31/2024
2.MILES OF MAINS IN SYSTEM AT END OF YEAR
MATERIAL UNKNOWN 2"OR LESS OVER 2" OVER 4" OVER 8" OVER 12" SYSTEM TOTALS
THRU 4" THRU 8" THRU 12"
STEEL 0 1329.87 625.89 378.31 42.13 0 2376.2
DUCTILE IRON 0 0 0 0 0 0 0
COPPER 0 0 0 0 0 0 0
CAST/WROUGHT 0 0 0 0 0 0 0
IRON
PLASTIC PVC 0 0 0 0 0 0 0
PLASTIC PE 0 4031.5 698.99 48.8 0 0 4779.29
PLASTIC ABS 0 0 0 0 0 0 0
PLASTIC OTHER 0 0 0 0 0 0 0
OTHER 0 0 0 0 0 0 0
RECONDITIONED 0 0 0 0 0 0 0
CASTIRON
TOTAL 0 5361.37 1324.88 427.11 42.13 0 7155.49
Describe Other Material: None
3.NUMBER OF SERVICES IN SYSTEM AT END OF YEAR AVERAGE SERVICE LENGTH:82.8
MATERIAL UNKNOWN 1"OR LESS OVER 1" OVER 2" OVER 4" OVER 8" SYSTEM TOTALS
THRU 2" THRU 4" THRU 8"
STEEL 0 69560 1828 103 12 0 71603
DUCTILE IRON 0 0 0 0 0 0 0
COOPER 0 0 0 0 0 0 0
CAST/WROUGHT 0 0 0 0 0 0 0
IRON
PLASTIC PVC 0 0 0 0 0 0 0
PLASTIC PE 0 339067 4727 76 2 0 343872
PLASTIC ABS 0 0 0 0 0 0 0
PLASTIC OTHER 0 0 0 0 0 0 0
OTHER 0 0 0 0 0 0 0
RECONDITIONED 0 0 0 0 0 0 0
CASTIRON
TOTAL 0 408627 6555 179 14 0 415375
Describe Other Material: None
4.MILES OF MAIN AND NUMBER OF SERVICES BY DECADE OF INSTALLATION
UNKNOWN PRE-1940 1940-1949 1950-1959 1960-1969 1970-1979 1980-1989 1990-1999 2000-2009 2010-2019 2020-2029 TOTAL
MILES OF 0 0 0 667.77 1056.31 708.6 357.57 1346.25 1673.64 865.41 479.94 7155.49
MAIN
NUMBER
OF 4 0 0 14854 31434 30106 27230 91740 113940 68701 37366 415375
SERVICES
PART C-TOTAL LEAKS AND HAZARDOUS LEAKS ELIMINATED/REPAIRED DURING THE YEAR
Form PHMSA F 7100.1-1 (rev 5-2021) Reproduction of this form is permitted Pg. 2 of 4

NOTICE: This report is required by 49 CFR Part 191. Failure to report may result in a civil penalty OMB No.2137-0629 as OMB NO:2137-0629
provided in 49 USC 60122. EXPIRATION DATE: 5/31/2024
MAINS SERVICES
CAUSE OF LEAK
TOTAL HAZARDOUS TOTAL HAZARDOUS
CORROSION FAILURE 2 2 1 1
NATURAL FORCE DAMAGE 13 6 28 8
EXCAVATION DAMAGE 123 116 610 585
OTHER OUTSIDE FORCE DAMAGE 3 2 10 4
PIPE,WELD OR JOINT FAILURE 19 10 164 79
EQUIPMENT FAILURE 4 0 607 27
INCORRECT OPERATIONS 4 1 8 3
OTHER CAUSE 0 0 1 1
NUMBER OF KNOWN SYSTEM LEAKS AT END OF YEAR SCHEDULED FOR REPAIR:3
NUMBER OF HAZARDOUS LEAKS INVOLVING A MECHANICAL JOINT FAILURE: 13
PART D-EXCAVATION DAMAGE PART E—EXCESS FLOW VALUE(EFV)AND SERVICE VALUE DATA
1.TOTAL NUMBER OF EXCAVATION DAMAGES BY APPARENT Total Number Of Services with EFV Installed During Year :7416
ROOT CAUSE: 815
a. One-Call Notification Practices Not Sufficient: 354 Estimated Number Of Services with EFV In the System At End Of Year:
101514
b. Locating Practices Not Sufficient: 78 "Total Number of Manual Service Line Shut-off Valves Installed During Year:
19
c. Excavation Practices Not Sufficient: 373
d. Other: 10
*Estimated Number of Services with Manual Service Line Shut-off Valves
Installed in the System at End of Year: 694
*These questions were added to the report in 2017.
2. NUBMER OF EXCAVATION TICKETS 128243
PART F-LEAKS ON FEDERAL LAND PART G—PERCENT OF UNACCOUNTED FOR GAS
TOTAL NUMBER OF LEAKS ON FEDERAL LAND REPAIRED OR
SCHEDULED TO REPAIR:0 UNACCOUNTED FOR GAS AS A PERCENT OF TOTAL CONSUMPTION
FOR THE 12 MONTHS ENDING JUNE 30 OF THE REPORTING YEAR.
[(PURCHASED GAS+PRODUCED GAS)MINUS(CUSTOMER USE+
COMPANY USE+APPROPRIATE ADJUSTMENTS)]DIVIDED BY
(CUSTOMER USE+COMPANY USE+APPROPRIATE ADJUSTMENTS)
TIMES 100 EQUALS PERCENT UNACCOUNTED FOR.
FOR YEAR ENDING 6/30: -0.48%
Form PHMSA F 7100.1-1 (rev 5-2021) Reproduction of this form is permitted Pg.3 of 4

NOTICE: This report is required by 49 CFR Part 191. Failure to report may result in a civil penalty OMB No.2137-0629 as OMB NO:2137-0629
provided in 49 USC 60122. EXPIRATION DATE: 5/31/2024
PART H-ADDITIONAL INFORMATION
PARTI-PREPARER
Colby Lundstrom Manager of Compliance and Ops L09)734-4587
(Preparer's Name and Title) (Area Code and Telephone Number)
[e-mail] [phone]
(Preparer's email address) (Area Code and Facsimile Number)
Form PHMSA F 7100.1-1 (rev 5-2021) Reproduction of this form is permitted Pg.4 of 4