 In 1993, city water lines in northwest and north-central Grand Island were extended.In 1998, a pump-and-treat facility that continues to operate was built to cycle contaminated water through an explosives residue-removal system and discharge it as clean water into Silver Creek.The Army injected "hot spots" of contamination with a molasses-based substance containing bacteria present under the T&E Cattle Company feedlot to more quickly degrade RDX and TNT, which supposedly helped lower contamination levels.