Data includes annual (2005-2017) reports of HAP metal emissions (total mass of off-site disposal for reach pollutant per year) from TRI Explorer for LA County.

Displayed historical countywide waste disposal by category from 1995-2017, with total pounds per capita based on CA Department of Finance population estimates.
For per capita disposal at the city level, merged Artesia, Beverly Hills, Duarte, Hidden Hills, Los Angeles, Lynwood, Manhattan Beach, Pomona, Rancho Palos Verdes, Redondo Beach, Rosemead, Sierra Madre, South Gate, Torrance as all report via the Los Angeles Integrated Waste Management District.

Data includes historical countywide waste disposal by waste category from 1995-2017, with total pounds per capita based on CA Department of Finance population estimates.

Joined 2017 CEC Annual Generation data with QFER Reporting to extract subset of California electricity generation located within LA County, disaggregated by city / unincorporated area.
Modified addresses by replacing neighborhoods with cities to aggregate data at the city level.

Total 2017 retail sales for each utility operating in LA County disaggregated based on values reported in Power Content Label.
Historical LA County renewable energy as share of total retail sales calculated by aggregating annual retail sales by generation for all utilities operating within LA County for 2010-2017.
In-county Southern California Edison retail sales based on difference between reported retail sales for LA County and the sum of retail sales for utilities operating in LA County, excluding Southern California Edison.

Data was sourced from LA County's Natural History Museum (NHM).
Data on current ongoing programs were reported for January 1st, 2018 – November 15th, 2018.
Data on specific challenge projects were reported for all years they occurred (2016, 2017, 2018), but each project has a different timescale. The El Nino SnailBlitz was 3 months, but all other SnailBlitzes and RASCalsBlitz were only 2 months long. The City Nature Challenge was the shortest project lasting only 3-5 days.

Data was sourced from LA County's Natural History Museum (NHM).
Data on current ongoing programs were reported for January 1st, 2018 – November 15th, 2018.
Data on specific challenge projects were reported for all years they occurred (2016, 2017, 2018), but each project has a different timescale. The El Nino SnailBlitz was 3 months, but all other SnailBlitzes and RASCalsBlitz were only 2 months long. The City Nature Challenge was the shortest project lasting only 3-5 days.

Data was sourced from LA County's Natural History Museum (NHM). Data on current ongoing programs were reported for January 1st, 2018 – November 15th, 2018. Data on specific challenge projects were reported for all years they occurred (2016, 2017, 2018), but each project has a different timescale. The El Nino SnailBlitz was 3 months, but all other SnailBlitzes and RASCalsBlitz were only 2 months long. The City Nature Challenge was the shortest project lasting only 3-5 days.

California Rapid Assessment Method (CRAM) is an assessment method for monitoring the condition of wetlands. Spatial data was derived from EcoAtlas and sorted to only include sites within LA County. Sites are sorted by watershed and by land use and presented as a percentage of sites per score.

Total 2017 retail sales for each utility operating in LA County disaggregated based on values reported in Power Content Label.
Historical LA County renewable energy as share of total retail sales calculated by aggregating annual retail sales by generation for all utilities operating within LA County for 2010-2017.
In-county Southern California Edison retail sales based on difference between reported retail sales for LA County and the sum of retail sales for utilities operating in LA County, excluding Southern California Edison.