Boaters, scientists investigate apprehensions over TMDLs in workshop

NEWPORT BEACH—Inherent concerns over the regulations of copper-based anti-fouling surfaces and implementations of copper total maximum daily loads (TMDLs) were discussed during a special strategy session hosted by the Recreational Boaters of California (RBOC), April 21 at the Newport Beach Civic Center. The workshop, which investigated strategies to obtain a clearer, more succinct understanding of the uniform statewide standard, was comprised of boaters, marina members, industry representatives and county officials. RBOC’s goal is to dissuade the Regional Water Quality Control Board from instituting TMDLs in impaired bodies of water; however, the general consensus is restrictions are coming. Copper, which is often used on boat hulls, reportedly has a negative effect on marine organisms and recreational harbor use. TMDLs help reduce the amount of copper released from these vessels, while protecting the habitat. Shelly Anghera, a principal scientist at Anchor QEA, examined the TMDL process, along with past testing at Newport Beach. “It’s about protecting and restoring back to what was originally intended of that environment,” Anghera said. “Think of it [TMDLs] like a bath tub. Every single faucet that comes into the bathtub is a source and if you have multiple drains and every drain is a possible sink, there’s a way for that contaminant...