With the help of heavy equipment, workers Monday began installing 2-ton concrete blocks across Talbert Channel in Huntington Beach as part of the county's $350,000 project to temporarily divert urban runoff into sewage treatment facilities.
As many as 2.5 million gallons of runoff a day, in one of the largest diversions in Southern California, are expected to be captured by blocking the flow with "enviro-blocks" that fit together like Legos.
