Census block internal point coordinates and weights formatted specifically for use in R code of the Environmental Justice Analysis Multisite (EJAM) tool, USA, 2020, EPA, EPA AO OP ORPM

This is Census 2020 block data specifically formatted for use by the Environmental Protection Agency (EPA) in-development Environmental Justice Analysis Multisite (EJAM) tool, which uses R code to find which block centroids are within X miles of each specified point (e.g., regulated facility), and to find those distances. The datasets have latitude and longitude of each block's internal point, as provided by Census Bureau, and the FIPS code of the block and its parent block group. The datasets also include a weight for each block, representing this block's Census 2020 population count as a fraction of the count for the parent block group overall, for use in estimating how much of a given block group is within X miles of a specified point or inside a polygon of interest. The datasets also have an effective radius of each block, which is what the radius would be in miles if the block covered the same area in square miles but were circular. The datasets also have coordinates in units that facilitate building a quadtree index of locations. They are in R data.table format, saved as .rda or .arrow files to be read by R code.

Data and Resources

Field Value
accessLevel public
bureauCode {020:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://edg.epa.gov/data/PUBLIC/OA/metadata/OA.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier 97843aa5-9202-402c-a2c9-4f50122bd05f
language {en,en-us}
license https://edg.epa.gov/EPA_Data_License.html
modified 2023-09-07
primaryitinvestmentuii 020-100000050
programCode {020:041}
publisher OP,ORPM
resource-type Dataset
source_datajson_identifier true
source_hash 44f802dbdf3c6960213d944773ca2591d194f64f4597db1f38b9e42493b3819f
source_schema_version 1.1
temporal 2020/2029
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • blocks
  • boundaries
  • boundaries-and-base-data
  • census-2020
  • census-blocks
  • centroids
  • environmental-justice
  • internal-points
  • location
  • locations
  • united-states
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer Mark Corrales
maintainer_email corrales.mark@epa.gov
metadata_created 2025-09-24T02:10:05.218467
metadata_modified 2025-09-24T02:10:05.218477
notes This is Census 2020 block data specifically formatted for use by the Environmental Protection Agency (EPA) in-development Environmental Justice Analysis Multisite (EJAM) tool, which uses R code to find which block centroids are within X miles of each specified point (e.g., regulated facility), and to find those distances. The datasets have latitude and longitude of each block's internal point, as provided by Census Bureau, and the FIPS code of the block and its parent block group. The datasets also include a weight for each block, representing this block's Census 2020 population count as a fraction of the count for the parent block group overall, for use in estimating how much of a given block group is within X miles of a specified point or inside a polygon of interest. The datasets also have an effective radius of each block, which is what the radius would be in miles if the block covered the same area in square miles but were circular. The datasets also have coordinates in units that facilitate building a quadtree index of locations. They are in R data.table format, saved as .rda or .arrow files to be read by R code.
num_resources 5
num_tags 19
title Census block internal point coordinates and weights formatted specifically for use in R code of the Environmental Justice Analysis Multisite (EJAM) tool, USA, 2020, EPA, EPA AO OP ORPM