No.

Conditions with initial filings due prior to commencing construction, or prior to

commencing construction of specified Project component(s)

CPCN

OC2

OC49

Temp

Pump1

Pump2

Tanks

Deact

Trans Mountain Expansion Project 2016

451

68

Seismic reports – liquefaction potential

Trans Mountain must file with the NEB,

at least 3 months prior to commencing

construction

, a final report that identifies all sites along the Project , that have “Very

High,” “High,” and “Moderate” liquefaction-triggered ground movement potential,

and that describes how the potential for liquefaction-triggered ground movement

will be mitigated at each site.

X

69

Fault studies

Trans Mountain must file with the NEB,

at least 3 months prior to commencing

construction

, the results of fault-mapping studies that were ongoing during or

undertaken after the OH-001-2014 proceeding, for use in the detailed design of

the Project. This filing must include conclusions regarding possible seismic activity

during the Holocene epoch for Sumas Fault, Vedder Mountain Fault, Fraser River-

Straight Creek Fault and Rocky Mountain Trench, and other possible hidden faults,

as well as the potential for compounding risks due to the proximity of the Vedder

Mountain and Sumas Faults.

X

70

Strain-based design

Trans Mountain must file with the NEB,

at least 3 months prior to commencing

construction

, the following information related to strain-based design, where it

is applied:

a) the location and rationale for selecting strain-based design in each location;

b) a report summarizing the adequacy of the strain-based design for various

loading scenarios during pipeline construction and operation for each location

provided in a); and

c) a list of standards and Project-specific specifications, including testing

procedures, used in the strain-based design.

X