U.S. BRIEFS

FINA OIL & CHEMICAL CO., Dallas, will stretch netting across sludge pits at an old refinery site near Colorado City, Tex., to prevent bird entrapment. Texas Water Commission this spring proposed including the 75 acre site in Texas' Superfund program after product waste was discovered seeping into the Colorado River. Fina has boomed off and is monitoring the affected part of the river while it assesses the situation. Fina expects by late 1993 to have a full remediation plan, to take