AN ECOLOGIST'S GARDEN Walnut Creek, California A simple boardwalk, floating across a vibrant outdoor "classroom" filled with pond plants and aquatic life. The custom pond lining system, subsurface drainage and structural/foundation system are truly behind the scenes of this unique teaching environment. Ron Lutsko, Landscape Architect Judy Adler, Consultant Click on images. Potomac Waterworks, 2451 Potomac Street, Oakland, California 94602-3032 Tel 510-482-1007   Fax 510-482-9465   Email paul@potomacwaterworks.com Website design by HYPERSPHERE. ©2004 Potomac Waterworks. All rights reserved.