Markwest Hydrocarbon, Inc. ,
 In connection with my previous e-mail on Markwest Hydrocarbon, Inc., please 
note that this ISDA Master Agreement with ENA will supersede and replace the 
Master Agreement between Enron Capital & Trade Resources ("ECT") and Markwest 
dated October 11, 1996.  The old Master Agreement shall be inactivated.

__________________

We have received an executed Master Agreement:

Type of Contract:  ISDA Master Agreement (Multicurrency-Cross Border)

Effective Date:   June 29, 2000

Enron Entity:   Enron North America Corp.

Counterparty:   Markwest Hydrocarbon, Inc.

Transactions Covered:  Approved for all products with the exception of:   
Foreign Exchange 
          
Confirming Entity:  Enron North America Corp.

Governing Law:   New York 


Copies will be distributed.


Samantha M. Boyd
Sr. Legal Specialist
Enron North America Corp.
1400 Smith, EB3802A
Houston, TX  77002
Phone:  (713) 853-9188
Fax:  (713) 646-3490
email:  samantha.boyd@enron.com
andrea.guillen@enron.com, bianca.ornelas@enron.com, bob.bowen@enron.com, 