EXHIBIT 99.4





CERTIFICATION
REQUIRED BY RULE 13a-14(a) OR RULE 15d-14(a) UNDER THE
 SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANTTO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002



I, Robert
B. Michaleski, certify that:



| | 1. | I have reviewed this annual report on
                                                           Form 40-F of Pembina Pipeline Corporation;
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------



| | 2. | Based on my knowledge, this report does
                                                           not contain any untrue statement of a material fact or omit to state
                                                           a material fact necessary to make the statements made, in light of
                                                           the circumstances under which such statements were made, not misleading
                                                           with respect to the period covered by this report;
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3. | Based on my knowledge, the financial
                                                           statements, and other financial information included in this report,
                                                           fairly present in all material respects the financial condition, results
                                                           of operations and cash flows of the issuer as of, and for, the periods
                                                           presented in this report;
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 4. | The issuer’s other certifying
                                                           officer and I are responsible for establishing and maintaining disclosure
                                                           controls and procedures (as defined in Exchange Act Rules 13a-15(e)
                                                           and 15d-15(e)) for the issuer and have:
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (a) | Designed such disclosure controls
                                                                  and procedures, or caused such disclosure controls and procedures
                                                                  to be designed under our supervision, to ensure that material
                                                                  information relating to the issuer, including its consolidated
                                                                  subsidiaries, is made known to us by others within those entities,
                                                                  particularly during the period in which this report is being
                                                                  prepared;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | Evaluated the effectiveness of
                                                                  the issuer’s disclosure controls and procedures and presented
                                                                  in this report our conclusions about the effectiveness of the
                                                                  disclosure controls and procedures, as of the end of the period
                                                                  covered by this report based on such evaluation; and
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | Disclosed in this report any
                                                                  change in the issuer’s internal control over financial
                                                                  reporting that occurred during the period covered by the annual
                                                                  report that has materially affected, or is reasonably likely
                                                                  to materially affect, the issuer’s internal control over
                                                                  financial reporting; and
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 5. | The issuer’s other certifying
                                                           officer and I have disclosed, based on our most recent evaluation of
                                                           internal control over financial reporting, to the issuer’s auditors
                                                           and the audit committee of the issuer’s board of directors (or
                                                           persons performing the equivalent function):
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (a) | All significant deficiencies and
                                                                 material weaknesses in the design or operation of internal control
                                                                 over financial reporting which are reasonably likely to adversely
                                                                 affect the issuer’s ability to record, process, summarize
                                                                 and report financial information; and
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | Any fraud, whether or not material,
                                                                 that involves management or other employees who have a significant
                                                                 role in the issuer’s internal control over financial reporting.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|Date: March 1, 2013 |                             
|------------------- | ----------------------------
|                    |                             
|                    | /s/
    Robert B. Michaleski
|                    | Name:                       
|                    | Title: