Mr. Gary Schoenfeld
Vice President Sales & Marketing CBIS
5047 Albrecht Lane
Warrenton, VA 20187

Subject: Chemical Testing of Core Fill 500 Foam

Dear Mr. Schoenfeld:

This letter will formally confirm the results of various chemical analysis tests performed. Three samples of Core Fill 500 were involved. The samples were from construction projects from the states of New York, Connecticut and Washington.

The test method used was the Fourier Transform Infrared Analysis Technique which measures how polymers absorb infrared light and result in a fingerprint unique to each type of polymer.

All samples showed the Core Fill 500 was a Urea Formaldehyde based product.

Results of tests are on file in our main office in West Brookfield, Massachusetts. Copies are available upon request.  The graphical results of the analysis are attached.

Respectfully,
D.L. Nickerson, P.E.
President

DLN/pjf