May 28, 2008

RE: Polyethylene Resin Price Increase Effective July 1, 2008

Dear Valued Polyethylene Customer:

Due to continued rising energy and feedstock costs, effective July 1, 2008, The Dow

Chemical Company ("Dow") will increase prices by U.S. $0.07/lb for all polyethylene

resins sold in the United States. This price increase is in addition to all previously

announced price increases, including the most recent U.S.$0.05/lb announced for June

1 implementation.

Products included in this price increase are as follows:

·

ATTANE™ Ultra Low Density Polyethylene (ULDPE) Resins

·

DOWLEX™ Polyethylene (LLDPE) Resins

·

®

NOVA Chemicals Inc.

NOVA Chemicals Inc.

1550 Coraopolis Heights Road

Moon Township, PA 15108

(412) 490-4000

May 15, 2008

Dear customer,

The following will serve to update you on NOVA Chemicals’ polyethylene pricing.

On June 1, 2008, NOVA Chemicals will implement the previously announced price

increase of five cents ($0.05) USD per pound. This increase will apply to all grades of

LLDPE, HDPE and LDPE polyethylene resins.

This increase is in addition to the three cents ($0.03) per pound increases previously

implemented on both April 1, 2008 and May 1, 2008.

Orders will be accepted based upon historical averages and our ability to supply.

As always, we thank you for the opportunity to service your current and future business

needs. Should you have any questions regarding product availability pricing or current

orders, please contact your local NOVA Chemicals’ Account Manager.

Sincerely,

NOVA Chemicals Inc.

John T. Siegrist, Vice President

Polymer Sales

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