5300 BISHOP BOULEVARD (82009)

Subject: Sealcoat Summary

In 1992, multiple sealcoats were placed at Centennial Airport in Colorado as a two year test of effectiveness and wearability.In the Spring of 1994, the WYDOT, Aeronautics Division, Project Engineer, Tom Lemenager, attended a seminar which presented the results of this test. Each attendee also conducted his own analysis and evaluation.Mr. Lemenager illustrated his in-depth assessment in the attached document which the Division has used as a general guide to sealcoats.Please contact me if you have any questions.

Attachment

SUMMARY OF SEAL COATS
TYPICALLY UTILIZED IN THE STATE OF WYOMING
ALONG WITH OTHER RELATED INFORMATION

JAO- Commonly called Seal-Gard^™, and produced in Cheyenne, Wyoming. It water soluble, and sand can be added. Plant location, 3414 Polk Ave., Cheyenne, WY 82001.

It is popular with the Cheyenne airport and a knowledgeable and former Wyoming Aeronautics Engineer.

This product was laid on a test strip area at Centennial Airport in 1992 and was observed in the spring of 1994. Of the ten products observed after the two year period (all products laid under like conditions at approximately the same application rate) this product appeared visually to be "superior" and the most preserved of all the products involved in the test.

In July of 1989 the Cheyenne Airport requested JAO Corporation to apply Seal-Gard^™ to a 60,000 square foot area of ramp space as a test plot.

The area chosen for the test was a 2" asphalt overlay with an 11" concrete base. The overlay was approximately 20 years old and very rough.We were quite pleased with the quick application and short down time required for drying, also the material itself held up extremely well even with the snow plowing that occured over the winter.

We were pleased enough with the results that in the summer of 1990 we had another 600,000 square feet of taxiways and approximately 50,000 square feet of parking lot covered, and in the summer of 1991 we had another 400,000 square feet of ramp area and parking lot covered with Seal-Gard^™.

The product has exceeded our expectations especially on the ramp areas where aircraft are fueled. We expected spills to damage the surface but stains are the only evidence of aircraft fuel spills.

We hope to continue the use of Seal-Gard^™ at the Cheyenne Airport to protect our asphalt pavements.

March 28, 1996To Whom It May Concern:In 1 993, the Pueblo Memorial Airport contracted Broomtown, Inc., to apply Seal-Gard^™ Asphalt Sealant to 80,000 square yards of Taxiway surfaces. In 1 995, we again contracted with Broomtown, Inc., to apply Seal-Gard^™ Asphalt Sealant to 1 90,000 square yards of Ramp area surfaces.Broomtown, Inc., utilizes state of the art equipment and has extensive knowledge in Municipality work. This enabled them to apply two coats of the sealant quickly which resulted in our airport remaining in full service with a minimal hindrance to our customers.The product Seal-Gard^™, which is manufactured by JAO Corporation, 3414 Polk Avenue, Cheyenne, Wyoming 82001, has proven to be a high quality product. Seal-Gard^™ has an excellent durability, fast drying time and is able to suspend larger sand particles generating a friction (non-skid) surface. Seal-Gard^™ also does very well in resisting fuel and oil spills.I highly recommend the use of Seal-Gard^™ Products with Broomtown, Inc., as the contractor. The results have exceeded our expectations.Please feel free to call me if you have any questions.

Respectfully,

Edward P. Chamberlin
Interim Director of Aviation