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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001193125-12-080040
Filing Date
2012-02-27
Accepted
2012-02-27 09:01:16
Documents
9
Period of Report
2011-12-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-K d306353d10k.htm 10-K 585218
2 SECTION 302 CEO CERTIFICATION d306353dex31a.htm EX-31.A 9735
3 SECTION 302 CFO CERTIFICATION d306353dex31b.htm EX-31.B 9744
4 SECTION 906 CEO CERTIFICATION d306353dex32a.htm EX-32.A 4571
  Complete submission text file 0001193125-12-080040.txt   2201070

Data Files

Seq Description Document Type Size
5 XBRL INSTANCE DOCUMENT npgp-20111231.xml EX-101.INS 213316
6 XBRL TAXONOMY EXTENSION SCHEMA npgp-20111231.xsd EX-101.SCH 14856
7 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE npgp-20111231_cal.xml EX-101.CAL 52821
8 XBRL TAXONOMY EXTENSION LABEL LINKBASE npgp-20111231_lab.xml EX-101.LAB 185088
9 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE npgp-20111231_pre.xml EX-101.PRE 112352
Mailing Address 295 CHIPETA WAY SALT LAKE CITY UT 84108
Business Address 295 CHIPETA WAY SALT LAKE CITY UT 84108 801-583-8800
NORTHWEST PIPELINE GP (Filer) CIK: 0000110019 (see all company filings)

IRS No.: 261157701 | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-07414 | Film No.: 12640259
SIC: 4922 Natural Gas Transmission