Under Cover Operations

摘要

Changes in the US Environmental Protection Agency's water quality regulations have brought about renewed interest in geomembrane floating cover systems for the protection of critical water resources. Specifically influencing many districts in their water protection designs are revisions of the EPA's Stage 2 Disinfectants and Disinfection By-Prod-ucts Rule (S2DBPR) and Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR). In answer to the first rule, the Los Angeles Department of Water and Power (LADWP) has opted to switch disinfectants from chlorine to chloramines. In answer to the second, it has opted to install a floating cover over the -9.2-sur-face-acre Santa Ynez Reservoir.