AMENDMENT This amendment applies to form 8-K filed February 7th, 1994. In the original filing, the attachment called "ASSET PURCHASE AGREEMENT" should have been labeled and referred to as "EXHIBIT 2". Exhibit 2 ASSET PURCHASE AGREEMENT BETWEEN HALLIBURTON NUS CORPORATION, RESOURCES CONSERVATION COMPANY AND RESOURCES CONSERVATION CO. INTERNATIONAL AND IONICS, INCORPORATED DECEMBER 30, 1993