Criteria Air Pollutants

How to Download Your Data

Note: Processing National Emissions Inventory data will require use of data processing software. The data are available in a tab or comma-delimited text format that must be imported into a program that will allow you to analyze the file.

1. For 1996, 1999, 2002, and 2005, use the following links:
   • 1996 - https://gaftp.epa.gov/air/nei/nei_criteria_summaries/1996criteriasummaryfiles/
   • 1999 – https://gaftp.epa.gov/air/nei/nei_criteria_summaries/1999criteriasummaryfiles/
   • 2002 – https://gaftp.epa.gov/air/nei/nei_criteria_summaries/2002summaryfiles/
   • 2005 – https://gaftp.epa.gov/air/nei/nei_criteria_summaries/2005summaryfiles/
2. For 2008, 2011, 2014, and 2017, use the following links:
   • 2008 – https://www.epa.gov/air-emissions-inventories/2008-national-emissions-inventory-nei-data
   • 2011 – https://www.epa.gov/air-emissions-inventories/2011-national-emissions-inventory-nei-data
   • 2014 – https://www.epa.gov/air-emissions-inventories/2014-national-emissions-inventory-nei-data
   • 2017 – https://www.epa.gov/air-emissions-inventories/2017-national-emissions-inventory-nei-data
   At each link, click the “Data Summaries” tab, then download the file “Facility-level by Pollutant.”
3. Oil and Gas Production facilities are grouped under SIC codes 1311 and 1321 for the years 1996 and 1999 and NAICS codes beginning with 211 for the years 2002 – 2017.
4. Using the SIC and NAICS variables, filter for oil and gas production facilities, then sum total emissions of CO, NOX, VOC, PM10, NH3, and SO2 in each year to arrive at the totals shown in this chart.

Greenhouse Gases

How to Download Your Data

1. Go to https://www.epa.gov/sites/production/files/2020-04/us-ghg-inventory-chapter-text.zip. This link will open a ZIP file containing a full time series of all tables in the U.S. GHG Inventory report.
2. Open folder for Chapter 3 - Energy
3. For each year, 1996 through 2018, sum the following:
   1. In table 3-37 (CH4 from Petroleum Systems), sum of “Exploration” and “Production (Total)” rows, million metric tons CO2e (MMT CO2e)
   2. In table 3-39 (CO2 from Petroleum Systems), sum of “Exploration” and “Production” rows, million metric tons CO2e (MMT CO2e)
   3. In table 3-41 (N2O from Petroleum Systems), sum of “Exploration” and “Production” rows, and then divide by 1,000,000 (units are in metric tons CO2e)
   4. In table 3-57 (CH4 from Natural Gas Systems), sum of “Exploration” and “Production” rows, million metric tons CO2e (MMT CO2e)
   5. In table 3-59 (CO2 from Natural Gas Systems), sum of “Exploration” and “Production” rows, million metric tons CO2e (MMT CO2e)
   6. In table 3-61 (N2O from Natural Gas Systems), sum of “Exploration” and “Production” rows, and then divide by 1,000,000 (units are in metric tons CO2e)

Hazardous Waste Generation

How to Download Your Data

1. Go to https://rcrainfo.epa.gov/rcrainfoweb/action/modules/br/naics/view
2. For each reporting cycle, sum the output across all NAICS codes to calculate the total shown in this chart for the year corresponding to that reporting cycle by using the following criteria:
   1. NAICS code: 2211
   2. Reporting cycles: 2001, 2003, 2005, 2007, 2009, 2011, 2013, 2015, 2017
   3. You do not need to change the “Generators to Include” dropdown or the “Location” dropdown before hitting submit.

Dollar Value of Gross Output

How to Download Your Data

1. Go to https://www.bea.gov/industry/gdpbyind_data.htm
2. Select “Access Underlying Detail tables.”
3. Select “Gross Output by Industry.”
4. Select “U.Gross Output by Industry (A).” Then on the next page, click “Next Step.” The resulting data table will then load.
5. Select “Modify” in the upper-right-hand corner of the table. In the resulting window:
   1. Set the scale as “Billions”
   2. Set the start year as “1997”
   3. Set the start year as “Most Recent”
   4. In the code list, select only “(211)” Do not select any other item in this menu, doing so may double count.
   5. Click “Refresh Table”
6. Row 1 of the resulting table, labeled “Chemical products” provides the corresponding data shown in this chart for each year.
7. (Optional) Download the dataset in XLS, CSV, or PDF format.

Note: NAICS 324110 (Petroleum Refineries) is not available in this dataset.

Employment

How to Download Your Data

Note: Processing employment data from the Census Bureau will require use of data processing software. The data are available in a comma-delimited text format that must be imported into a software package that will allow you to analyze the file.

1. Go to https://www.census.gov/programs-surveys/cbp/data/datasets.html
2. Click on any link labeled “County Business Patterns: YEAR.” On the resulting page, click the “Complete U.S. File” link and download the corresponding file. Repeat this process for each year from 1998 to 2018.
3. Open each file in a software package of your choice that can process comma-delimited text files. Repeat the steps below for each file.
4. For entities with suppressed data, the Census Bureau replaces all employment values with zeroes, and this underestimates the total number of employees in each sector. Using your software package, replace the suppression flags with the midpoint of the Data Suppression Flag employment ranges per the table below.

   Empflag Data Suppression Flag	Employment Size Class		Midpoint
   	Min	Max
   A	0	19	10
   B	20	99	60
   C	100	249	175
   E	250	499	375
   F	500	999	750
   G	1000	2,499	1,750
   H	2,500	4,999	3,750
   I	5000	9,999	7,500
   J	10,000	24,999	17,500
   K	25,000	49,999	37,500
   L	50,000	99,999	75,000
   M	100,000	>100,000	100,000

5. In your software package, filter the data for NAICS codes that begin with 211.
6. With the filter in place, aggregate the “emp” column across all records.

Produced Goods

How to Download Your Data

1. For petroleum quantity produced:
   1. Go to https://www.eia.gov/dnav/pet/pet_crd_crpdn_adc_mbbl_m.htm
   2. Change the displayed “Period-Unit” dropdown to “Annual-Thousand Barrels”
   3. Click “Download Series History.” The resulting spreadsheet file will contain a worksheet, “Data 1” with “U.S. Field Production of Crude Oil (Thousand Barrels)” as Column B.
   4. To convert petroleum (thousand barrels) to Btu, multiply each annual value by 5,800,000,000.
2. For natural gas quantity produced:
   1. Go to https://www.eia.gov/dnav/ng/ng_prod_sum_a_EPG0_FGW_mmcf_m.htm
   2. Confirm that the “Data Series” dropdown displays “Gross Withdrawals.”
   3. Change the displayed “Period-Unit” dropdown to “Annual-Million Cubic Feet”
   4. Click “Download Series History.” The resulting spreadsheet file will contain a worksheet, “Data 1” with “U.S. Natural Gas Gross Withdrawals (MMcf)” as Column B.
   5. To convert natural gas (MMcf) to Btu, multiply each value by 1,037,000,000.
3. Sum the converted petroleum values with the converted natural gas quantity values for each year to calculate the total quantity produced in Btu in each year.