Energy:

• Electricity
• Motor fuel [diesel & bio-diesel]
• Natural gas
• Solar
• Wind

Natural Resources: and natural assets called Eco-System Services

• Air quality [Air Quality Index]  DEQ study: Toxic Air Pollution near schools 
• Stormwater
• Tree canopy
• Water

Sustainability indicators:

• Energy: Total consumption in MMBTUs 
• Energy: Ratio of renewable energy to non-renewable energy
• Groundwater: Water level in aquifer well
• Land Use: Percent of impervious surface
• Tree Canopy: Percent of total canopy cover