Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

Effective Date: 08/01/2009, Docket: RP09-684-001, Status: Effective

Substitute Fifth Revised Sheet No. 231 Substitute Fifth Revised Sheet No. 231

Superseding: Fifth Revised Sheet No. 231

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

40. Gas Industry Standards

In addition to the NAESB standards incorporated within the text of other

provisions of this FERC Gas Tariff, GTN incorporates by reference the

following standards by level of compliance:

NAESB Version 1.8

0.1.3; 0.2.1; 0.2.2; 0.2.3; 0.3.1; 0.3.2; 0.3.3; 0.3.4; 0.3.5; 0.3.6;

0.3.7; 0.3.8; 0.3.9; 0.3.10; 0.3.11; 0.3.12; 0.3.13; 0.3.14; 0.3.15;

0.4.1; 1.2.13; 1.2.14; 1.2.15; 1.2.16; 1.2.17; 1.2.18; 1.2.19; 1.3.3;

1.3.4; 1.3.15; 1.3.17; 1.3.18; 1.3.20; 1.3.21; 1.3.24; 1.3.25; 1.3.26;

1.3.27; 1.3.28; 1.3.29; 1.3.30; 1.3.31; 1.3.32; 1.3.33; 1.3.34; 1.3.35;

1.3.36; 1.3.37; 1.3.38; 1.3.39; 1.3.40; 1.3.41; 1.3.42; 1.3.43; 1.3.44;

1.3.45; 1.3.46; 1.3.47; 1.3.48; 1.3.49; 1.3.50; 1.3.51; 1.3.52; 1.3.53;

1.3.54; 1.3.55; 1.3.56; 1.3.57; 1.3.58; 1.3.59; 1.3.60; 1.3.61; 1.3.62;

1.3.63; 1.3.64; 1.3.65; 1.3.66; 1.3.67; 1.3.68; 1.3.69; 1.3.70; 1.3.71;

1.3.72; 1.3.73; 1.3.74; 1.3.75; 1.3.76; 1.3.77; 1.3.79; 1.4.1; 1.4.2;

1.4.3; 1.4.4; 1.4.5; 1.4.6; 1.4.7; 2.1.5; 2.2.2; 2.2.3; 2.2.4; 2.3.1;

2.3.2; 2.3.3; 2.3.4; 2.3.5; 2.3.6; 2.3.8; 2.3.10; 2.3.12; 2.3.13; 2.3.15;

2.3.16; 2.3.17; 2.3.18; 2.3.19; 2.3.20; 2.3.21; 2.3.22; 2.3.23; 2.3.25;

2.3.26; 2.3.27; 2.3.28; 2.3.31; 2.3.32; 2.3.33; 2.3.34; 2.3.35; 2.3.40;

2.3.41; 2.3.42; 2.3.43; 2.3.44; 2.3.45; 2.3.46; 2.3.47; 2.3.48; 2.3.49;

2.3.50; 2.3.51; 2.3.52; 2.3.53; 2.3.54; 2.3.55; 2.3.56; 2.3.57; 2.3.58;

2.3.59; 2.3.60; 2.3.61; 2.3.62; 2.3.63; 2.3.64; 2.3.65; 2.4.1; 2.4.2;

2.4.3; 2.4.4; 2.4.5; 2.4.6; 2.4.7; 2.4.8; 2.4.9; 2.4.10; 2.4.11; 2.4.12;

2.4.13; 2.4.14; 2.4.15; 2.4.16; 2.4.17; 2.4.18; 3.3.1; 3.3.2; 3.3.3;

3.3.4; 3.3.5; 3.3.6; 3.3.7; 3.3.8; 3.3.9; 3.3.10; 3.3.11; 3.3.12; 3.3.13;

3.3.16; 3.3.18; 3.3.19; 3.3.20; 3.3.21; 3.3.22; 3.3.23; 3.3.24; 3.3.25;

3.3.26; 3.4.1; 3.4.2; 3.4.4; 4.1.40; 4.2.1; 4.2.11; 4.2.12; 4.2.13;

4.2.20; 4.3.1; 4.3.2; 4.3.3; 4.3.5; 4.3.16; 4.3.17; 4.3.18; 4.3.20;

4.3.22; 4.3.23; 4.3.24; 4.3.25; 4.3.26; 4.3.27; 4.3.28; 4.3.29; 4.3.30;

4.3.31; 4.3.32; 4.3.33; 4.3.34; 4.3.35; 4.3.36; 4.3.38; 4.3.39; 4.3.40;

4.3.41; 4.3.42; 4.3.43; 4.3.44; 4.3.45; 4.3.46; 4.3.47; 4.3.48; 4.3.49;

4.3.50; 4.3.51; 4.3.52; 4.3.53; 4.3.54; 4.3.55; 4.3.56; 4.3.57; 4.3.58;

4.3.59; 4.3.60; 4.3.61; 4.3.62; 4.3.65; 4.3.66; 4.3.67; 4.3.68; 4.3.69;

4.3.72; 4.3.73; 4.3.74; 4.3.75; 4.3.76; 4.3.78; 4.3.79; 4.3.80; 4.3.81;

4.3.82; 4.3.83; 4.3.84; 4.3.85; 4.3.86; 4.3.87; 4.3.89; 4.3.90; 4.3.91;

4.3.92; 4.3.93; 5.3.10; 5.3.17; 5.3.18; 5.3.20; 5.3.21; 5.3.22; 5.3.23;

5.3.24;

(Continued)