Parker, Colo.-based Colorado Lining International, a geomembrane manufacturer, has acquired Evansville, Ind.-based Alliance Golf, a water-feature builder, and is now ClearWater Construction International.

Irvine, Calif.-based Signature Control Systems, a manufacturer of turf-grass site management equipment, has acquired Bear Irrigation from Temecula, Calif.-based Grizzle & Hunter Plastic.

Glen Allen, Va.-based Schnabel Engineering has merged with Golden, Colo.-based Lachel Felice & Associates.

El Segundo, Calif.-based NC4, a crisis management firm, has acquired Arlington, Va.-based ESP Group, an Internet security company.

Indianapolis-based Schneider Corp., a geographic information systems provider, has merged with Ames, Iowa-based ProMap.

Beachwood, Ohio-based Wastequip has acquired North Oxford, Mass.-based Pioneer Cover-All, which manufactures tarp systems.

Fairport, N.Y.-based Bosch Security Systems has acquired Burnsville, Minn.-based Telex Communications, a manufacturer of communication equipment.