City, county, and state planners

Regional planning groups

Water supply managers and public works departments

Public and state health departments and sanitarians

County and state transportation departments

State and federal environmental protection agencies

Builders, developers, and insurance companies

Environmental and civil engineers and professional geological consultants

Aggregate, mining, and material science companies

Educational institutions

Environmental advocacy groups

Soil and water conservation districts

Homeland security agencies and emergency management service

Biofuel producers and energy-generation plants

Agriculture and soil professionals

Economic development agencies

Real estate and marketing companies