Overview

Background: The CalEnviroScreen 4.0 provides data to identify environmental exposures and their effects at the census tract level in California. Data was released in February 2021 for public review and contains updated indicators and improved methods for calculations and scoring. This dashboard aims to address the research question: How does pollution burden disproportionately affect various locations in Alameda county? It aims to provide a visual on some of the seven exposure indicators that are included in the calculation for the Pollution Burden Score. These include ozone, PM2.5 concentrations, diesel PM emissions, drinking water contaminants, children’s lead risk from housing, pesticide use, toxic releases from facilities, and traffic density. This dashboard is important for viewers that live in Alameda county to understand various environmental indicators and how they can affect their health. It is also relevant for advocates, policy makers, teachers, and local officials to visualize where interventions can be most effective and how to structure policy to impact even the most vulnerable communities.

Results: The results of this dashboard show that Albany, Berkeley, Emeryville, Oakland, San Leandro, Hayward, and Fremont have the highest pollution burdens in Alameda county. San Leandro has particularly high Diesel PM outputs and Oakland has the highest PM2.5 outputs. Interestingly, the overall pollution burden score, which is derived from the average percentiles of the seven exposure indicators and five environmental effects, is the highest in Emeryville. In the scatter plot Emeryville shows high Diesel PM measures and moderate to high PM2.5. The table provides an overview of the measures of all seven exposure indicators across Alameda county. Overall, these results highlight a disproportionate pollution burden in parts of the county with heavy road infrastructure and traffic which likely contribute to the PM2.5 and Diesel PM measures.Future directions could include more interactive plots and maps to highlight other environmental indicators involved in the pollution burden calculation to further support this research question.

Data source: CalEnviroScreen 4.0, courtesy of the EPA

Data Explorer

Column 1

Alameda County Choropleth Map

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Coordinate Reference System:
  User input: EPSG:4269 
  wkt:
GEOGCRS["NAD83",
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        ELLIPSOID["GRS 1980",6378137,298.257222101,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[ellipsoidal,2],
        AXIS["geodetic latitude (Lat)",north,
            ORDER[1],
            ANGLEUNIT["degree",0.0174532925199433]],
        AXIS["geodetic longitude (Lon)",east,
            ORDER[2],
            ANGLEUNIT["degree",0.0174532925199433]],
    USAGE[
        SCOPE["Geodesy."],
        AREA["North America - onshore and offshore: Canada - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon. Puerto Rico. United States (USA) - Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Hawaii; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming. US Virgin Islands. British Virgin Islands."],
        BBOX[14.92,167.65,86.45,-40.73]],
    ID["EPSG",4269]]
Coordinate Reference System:
  User input: NAD83 
  wkt:
GEOGCRS["NAD83",
    DATUM["North American Datum 1983",
        ELLIPSOID["GRS 1980",6378137,298.257222101,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[ellipsoidal,2],
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            ORDER[1],
            ANGLEUNIT["degree",0.0174532925199433]],
        AXIS["longitude",east,
            ORDER[2],
            ANGLEUNIT["degree",0.0174532925199433]],
    ID["EPSG",4269]]
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Simple feature collection with 6 features and 12 fields
Geometry type: MULTIPOLYGON
Dimension:     XY
Bounding box:  xmin: -122.0461 ymin: 34.13038 xmax: -118.5185 ymax: 37.10303
Geodetic CRS:  NAD83
  statefp countyfp tractce       geoid    name             namelsad mtfcc
1      06      037  137504 06037137504 1375.04 Census Tract 1375.04 G5020
2      06      037  138000 06037138000    1380    Census Tract 1380 G5020
3      06      037  139200 06037139200    1392    Census Tract 1392 G5020
4      06      087  120901 06087120901 1209.01 Census Tract 1209.01 G5020
5      06      087  120902 06087120902 1209.02 Census Tract 1209.02 G5020
6      06      087  121601 06087121601 1216.01 Census Tract 1216.01 G5020
  funcstat    aland  awater    intptlat     intptlon
1        S  3837562       0 +34.1480383 -118.5720594
2        S  4472196       0 +34.1488008 -118.5910495
3        S  1152028       0 +34.1756961 -118.5246446
4        S 18372491       0 +37.0781624 -122.0154263
5        S  6474889       0 +37.0628452 -122.0106243
6        S  1171521 1165471 +36.9564718 -121.9752387
                        geometry
1 MULTIPOLYGON (((-118.5812 3...
2 MULTIPOLYGON (((-118.6057 3...
3 MULTIPOLYGON (((-118.5308 3...
4 MULTIPOLYGON (((-122.0461 3...
5 MULTIPOLYGON (((-122.0251 3...
6 MULTIPOLYGON (((-121.9862 3...

Column 2

PM2.5 concentration vs Diesel PM emissions across locations in Alameda County with <75% Burden

Pollution Burden Score Distribution across locations in Alameda County with <75% Burden

Data Table

Pollution Burden Exposure Indicator Table