Makes tractors, composting aerators (tractor, skid steer loader), brush cutters, tree trimmers, wheeled all terrain carriers, used for environmental, pipeline and utility construction and maintenance. Iowa, USA.

Portfolio of ecologically sensitive work, commercial, residential and research oriented. Includes profile, research, resume, thesis, studio work and a profile of VanZilla, the urban recreational vehicle.

Information related to sustainable construction in Queensland Australia. Includes links to related sites in Australia.

Sustainable, passive solar, do-it-yourself house plans are featured with interior planterbeds, composting toilets, greywater recycling and septic system products.

Civil, environmental, structural and land surveying consulting services. Includes project portfolio and employment opportunities. Over the past 15 years Clark Engineering & Surveying, P.C. has grown to compete with much larger firms on multi-million dollar projects, yet we remain efficient enough to tackle the smaller commercial and residential projects in our community. We've resisted specialization in a particular area, choosing instead to remain flexible and provide comprehensive services. It's part of what makes Clark Engineering & Surveying, P.C. truly unique.