HOUSTON, Texas - Planning, engineering and program management firm Lockwood, Andrews & Newnam, Inc. (LAN) strengthened its stormwater team with three new senior project managers. David Barton, P.E., CFM, and William Conlan, P.E, CFM, will serve the firm’s stormwater clients in Houston. Naveen Khammampati, P.E., CFM, will manage the firm’s stormwater projects in North Texas.