Allied Engineers-
Allied Engineers, Inc. is a full-service environmental engineering firm providing planning, design, and construction assistance to municipalities, counties, industry, and private developers. Specific services include wastewater planning, permitting, systems engineering, design engineering, operation and maintenance assistance, and construction management.
http://www.alliedengineersinc.com/enter-en.htm

Bioregen-
Bioregen is a company focused on the treatment of municipal sewage sludge and domestic septage. The company focuses on the development of natural biological processes that convert the organic elements of waste into resources for high-value agricultural products. Bioregen’s commercially scalable process is economical, energy efficient, and sustainable.
http://www.bioregen.com/

Ecological Design Collaborative-
Too many people do not know where their water, energy, or food comes from or where their waste and wastewater goes. Our engineering, architecture, and design services establish healthy, respectful connections amongst society, infrastructure, and nature. The EDC focuses on development and restoration projects that lessen our ecological footprint, and employing designs and practices conducive to sustainable living . The EDC is the engineering and design arm of SEEDS, a non-profit research, design and educational institution. The EDC fosters projects that are participatory in nature and holistic in perspective.
http://www.ecodesigncollaborative.com/index.htm

Envirotech Consultants-
Envirotech is an environmental consulting firm and native plant nursery located in Somerset, OH about an hour east of Columbus. We perform a variety of ecological services for our clients including site assessments, wetland delineations, permitting, wetland mitigation design, and ecological monitoring. We are proficient in the use of several ecological assessment tools used throughout Ohio, such as the QHEI, ORAM, IBI, and ICI. We are also proficient in ecocsystems restoration and have had experience with streams, wet prairies, sedge meadows, forested wetlands, emergent wetlands, fens, tall and short grass prairies and prairie barren ecosystems. We also grow over 150 species of native prairie and wetland plant for both retail and wholesale. All of our plants are native to the Midwest and many are propagated from Ohio seed sources.
http://www.envirotechcon.com/index.html

Integrative Design Collaborative-
The IDC is a consortium of advanced practitioners who serve as resources, coaches, and program managers to help project teams achieve increasingly higher levels of environmentally responsible design.IDC’s purpose is to promote understanding of the benefits of human activity in healthy participation with natural systems. The objective is to structure the design process to achieve affordable and deeply effective ecological systems design.Whether you call this green, sustainable, restorative, regenerative, high performance, environmental, or ecological design, it’s all about applying systems thinking to address the whole system – not just the pieces. It’s just good design.
http://www.integrativedesign.net/

John Todd Ecological Design-
John Todd Ecological Design, Inc. is an award-winning water and natural resources planning firm. The firm’s services include comprehensive construction design, consulting, and facility operations services to public and private clients throughout the world. The firm provides clients with cost-effective aesthetic solutions to wastewater, storm water, aquatic environment management, and bio-solids conversion.
http://www.toddecological.com/index.html

Seeds-
SEEDS is a non-profit research, design and educational institution whose mission is to seek the development of socially and ecologically sustainable environments. We foster projects that are participatory in nature and holistic in perspective. To this end, we act as an educational and networking resource. SEEDS focuses on incubating projects that lessen our ecological footprint, and designing spaces conducive to this.
http://www.ecoseeds.org/