0001038838-02-000990 Sample Contracts

Exhibit 99.2.4 STOCK OPTION AGREEMENT
Stock Option Agreement • December 24th, 2002 • Headwaters Inc • Miscellaneous products of petroleum & coal
RECITALS
License and Reagent Purchase Agreement • December 24th, 2002 • Headwaters Inc • Miscellaneous products of petroleum & coal • New York
RECITALS
Sublicense Agreement and Binder Purchase and Sale Agreement • December 24th, 2002 • Headwaters Inc • Miscellaneous products of petroleum & coal • Utah
EXHIBITS
Replacement Agreement for Management of Ash and Other Byproducts • December 24th, 2002 • Headwaters Inc • Miscellaneous products of petroleum & coal • Arizona