Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

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Effective Date: 10/01/2002, Docket: RP02-483-000, Status: Effective

Third Revised Sheet No. 752 Third Revised Sheet No. 752 : Effective

Superseding: Second Revised Sheet No. 752




1.4 Security Procedures


1.4.1 Each party shall use those security procedures specified in the

North American Energy Standards Board ("NAESB") standards and the

Exhibit(s). The manner in which public encryption keys are to be

changed and/or exchanged will be specified in the Exhibit(s).


1.4.2 Securely Key Exchanges. The parties shall maintain a public

key used to facilitate secure electronic communication. The parties

shall change their public key as set forth in the Exhibit(s). However,

in emergency situations in which it is necessary to change a key

immediately, each party shall provide the other party with immediate

notice of the change. Each party shall provide to the other its public

key by either: (a) a certified or receipt mail service using a diskette

with the public key contained in an ASCII text file; or, (b) an

electronic simple mail transfer protocol ("SMTP") mail message with the

public key contained in the body. The public key shall be verified by

the party to whom it is sent by validating the fingerprint of the public

key by phone or by other comparable means.


1.5 Signatures. Each party shall adopt as its signature private keys which

shall be applied to each document transmitted by such party ("Digital

Signature "). Such Digital Signature, when decrypted by the receiving party,

will be used to authenticate the identity of the sender.


Section 2. Transmissions


2.1 Proper Receipt


2.1.1 Documents shall not be deemed to have been properly received,

and no Document shall give rise to any obligation, until accessible to

the receiving party at such party's Receipt Computer designated in the

Exhibit(s), as evidenced by the receipt by sending party of the HTTP

response initiated by receiving party. The HTTP response shall specify

the date and time of receipt of a Document at the receiving Internet

server (also called "time-c"). No Document shall have any effect if the

HTTP response is not received by sending party, or if the HTTP response

indicates an error.