20120924Lost, Unaccounted-for Gas Report.pdf

2012SEP2+ PM 1:26
DAO FU3J UTL1Tt3 CDMMISSlG4
EXECUTIVE OFFICES
INTERMOUNTAIN GAS COMPANY
555 SOUTH COLE ROAD • P.O. BOX 7608 • BOISE, IDAHO 83707 • [phone] • FAX: [phone]
September 24, 2012
Ms. Jean Jewell
Idaho Public Utilities Commission
472 W. Washington St.
P.O. Box 83720
Boise, 10 83720-0074
RE: Intermountain Gas Company's Semi-Annual Report pertaining to Lost and
Unaccounted for Gas
Case No. INT-G-08-03
Dear Ms. Jewell:
Attached for filing with the Idaho Public Utilties Commission are the original and seven
copies of Intermountain Gas Company's Semi-Annual Report pertaining to Lost and
Unaccounted for Gas.,
Additional information pertaining to Intermountain's Lost and Unaccounted for Gas can be found
in our most recent PGA filing, or Case No. INT-G-1 1-01. Please reference Exhibit 9, page 1 of
I and Workpaper No. 6.
If there are any questions regarding the attached, please contact me at [phone].
Very tru

Hart Gilch i
Director - perations Services
Enclosures
cc: K. F. Morehouse
T. M. Clark
S. W. Madison
M. Parvinen
Intermountain has a standing inter-disciplinary team that reviews the LUAF audit processes
currently in place, investigates potential sources of LUAF, and takes remedial action as needed
to continue to keep Intermountain's LUAF levels low.
Intermountain's previously implemented practices are still in place and the results continue to be
monitored by members of the LUAF team. The Intermountain Gas LUAF team has not met
formally since the last report was submitted. The results of our ongoing audit activities are
outlined below.
The continuation of the audits and reporting as outlined in earlier quarterly reports provides the
following results to date:
Year Check for Dead Orders found dead % found dead
2008 5,088 708 13.00%
2009 6,481 542 8.36%
2010 12,441 569 4.57%
2011 10,093 795 7.87%
2012 (Aug.) 3,928 432 10.99%
Year Drive Rate errors
2007 43
2008 26
2009 18
2010 13
2011 14
2012 (Aug.) 2
Year Pressure errors
2008 15
2009 20
2010 19
2011 8
2012 (Aug.) 4
A breakdown of each of these categories by Intermountain Gas District location for the current
year is as follows:
Dead Meters:
District Quantity
Boise 178
Nampa 122
Twin Falls 39
Pocatello 30
Idaho Falls 63
Drive Rate Errors:
District Quantity
Boise 0
Nampa 1
Twin Falls 0
Pocatello I
Idaho Falls 0
Pressure Errors:
District Quantity
Boise 3
Nampa 0
Twin Falls I
Pocatello 0
Idaho Falls 0
Gas loss, as it is commonly referred to, is calculated as described in the April 2009 quarterly
report. A summary of findings for 2007-2012 (Aug.) is shown below:
2007 - 656 occurrences
2008 - 495 occurrences
2009 - 301 occurrences
2010— 175 occurrences
2011 - 154 occurrences
2012-115 occurrences
254,455 therms of gas loss calculated
182,920 therms of gas loss calculated
130,251 therms of gas loss calculated
88,947 therms of gas loss calculated
49,856 therms of gas loss calculated
33,167 therms of gas loss calculated
Intermountain continues to monitor LUAF levels and looks for additional opportunities keep its
LUAF rate at a favorable level. As stated in earlier reports, alterations to the billing factors,
LUAF reporting, and LUAF audits have helped and will continue to help Intermountain control
the quantities and costs associated with Lost and Unaccounted for Gas.