Jon M. Laria, a Baltimore development lawyer and Managing Partner of Ballard Spahr’s office in that City, has been appointed by Gov. Martin O'Malley to a 28-member task force to study the environmental and health effects of on-site sewage disposal. Gov. O’Malley asserts that curbs on septic-based growth are needed to help clean up the Chesapeake Bay and to rein in suburban sprawl. His office described the task force as broad-based, with representatives of business, agriculture, science, environmental advocacy, and government.