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Where can I download hourly emissions data from continuous monitoring?
Hourly emissions data files are available from the Clean Air Markets Division of EPA, collected as part of 40 CFR Part 75. The download location has changed in February, 2023. The new location is https://campd.epa.gov/data/bulk-data-files . Once on this new site, use the menu (at the left) and the Keyword…
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Where can I find older NEI data (prior to 2008)?
The raw data and summaries that are still available (dating back to 1990) can be obtained from the web page https://www.epa.gov/air-emissions-inventories/pollutant-emissions-summary-files-earlier-neis . Starting with 2001 data, a more limited selection of summary files are available.
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How do the different parts of particulate matter (PM) fit together?
The various parts of PM in the NEI are related as follows. PM10-FIL > PM25-FIL because PM10-FIL includes PM25-FIL PM25-PRI = PM25-FIL + PM-CON This equation only applies at the process level. Because some sources only can report PM2.5 (due to test method differences), this equation does not apply to…
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How does PM2.5 relate to PM species such as EC, OC, SO4, NO3, PMFINE, and DIESEL-PM25?
Primary PM2.5 estimates are speciated into the five PM species in the NEI: elemental (black) carbon (EC), organic carbon (OC), nitrate (NO3), sulfate (SO4), and the remainder of PM25-PRI (PMFINE). Diesel engine PM25-PRI and PM10 emissions are also labeled as DIESEL-PM25 and DIESEL-PM10 for mobile source diesel engines. For all…
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Can renovator training courses, both initial and refresher courses, be taught online or via distance learning?
Answer: The final Renovation, Repair and Painting regulation, like the abatement program, permits the use of alternative training techniques (e.g., video training, computer-based training) as a supplement to the hands-on skills assessment, or as a substitute for the lecture portion of the training course requirements outlined in § 745.225. In…
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If a remodeling company that is a certified firm uses all contractual workers rather than employees, must each contractual worker be a certified renovator, or can the workers be trained on the job by a certified renovator employed by the firm?
Firms hiring contractual workers may provide the certified renovator that oversees the renovation project and provides on-the-job training to contractual workers and other non-certified workers. Question Number: 23002-18377 Find a printable PDF copy of all frequent questions pertaining to lead .
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Is the certified renovator assigned to a specific project responsible for the work practices of other contractors on the project if the certified renovator is an employee of the general contractor of the project?
All firms performing renovations must ensure that all individuals performing renovation activities on behalf of the firm are either certified renovators or have been trained by a certified renovator. A firm acting as a general contractor may satisfy this requirement by hiring another certified firm that takes responsibility for ensuring…
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What about a situation where the homeowner is acting as their own general contractor and hires multiple companies to do different portions of the work? In this situation, would each business participating be required to follow the rules and assign a separate certified renovator to supervise their portion of the work including separate containment?
Answer: While the homeowner may be performing the role of general contractor by hiring firms and organizing their work, the homeowner is not performing, offering, or claiming to perform a renovation and therefore does not need to be a certified firm. The firms hired by the homeowner to perform renovation…
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The certified renovator is required to have proof of their certification at the work site. If the certified renovator provides on-the-job training to workers, does there need to be documentation of that training at the work site too?
Answer: No. Certified renovators must have with them at the work site copies of their initial course completion certificate and their most recent refresher course completion certificate. Certified renovators are also responsible for providing training to non-certified workers on the work practices they will be using in performing their assigned…
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What training requirements apply to non-certified workers who have previous EPA/HUD lead-safe work practices training or accredited abatement supervisor or worker training?
The Lead Renovation, Repair, and Painting (RRP) Rule requires certified renovators to provide on-the-job training (OJT) to non-certified workers on the work practices they will be using in performing their assigned tasks. The amount of OJT needed and the topics that need to be covered depend on the knowledge and…
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Will boiling my water help?
No. Boiling water will NOT reduce nitrate levels. In fact, it will make the level of nitrate worse because some of the water will evaporate but the nitrate will not. This increases the concentration of nitrate in water.
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How complete are the data in the National Emissions Inventory?
While the goal of the National Emissions Inventory (NEI) program is to include all emissions data, there are always challenges meeting this goal. The answer about completeness of coverage of sources depends on the emissions sector and pollutant. In general, the criteria air pollutants and precursors (CAPs) are expected to…
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Where is more information available about emissions estimation methods used by the EPA?
For criteria air pollutants and precursors as well as for hazardous air pollutants, the methods are described in the technical support document (TSD) for the latest National Emissions Inventory (NEI) available from the main NEI page . For greenhouse gas emissions, you can find greenhouse gas inventory methods from the…
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What sources make up the Tier 1 categories used in the emissions trends?
Tier 1 categories are assigned by source classification codes (SCCs) that are the most specific processes available in the NEI. The latest SCC list with the Tier 1 assignments can be downloaded from the EPA SCC website in Comma Separate Values (CSV) format.
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What is the cause of the large decrease in electric utility emissions, particularly sulfur dioxide, starting in 1995?
SO2 emissions reductions from utilities during this time are primarily attributed to the impacts of the acid rain program. As described on EPA’s Acid Rain Program web page, Phase 1 of this program began in 1995 and affected 263 units at 110 most coal-burning electric utility plants in 21 eastern…
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