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Displaying 1 - 15 of 61 results
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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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May I use the pamphlet “Protect Your Family From Lead in Your Home” to meet my obligations for pre-renovation education under the RRP Rule?
Answer: No. As of December 22, 2008, only the pamphlet “ Renovate Right ” may be used to comply with the pre-renovation education requirements of the RRP Rule. “ Protect Your Family ” is still available for use during real-estate sales and lease transactions and for general information. Question Number…
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My firm is replacing windows in a condominium. Is this type of exterior work considered work in a common area, and if so, must other owners and occupants be informed about the job?
Exterior renovations of multi-unit target housing are considered renovations of a common area. A common area is a portion of a building that is generally accessible to all residents or users of the building. Renovations in common areas of multi-unit target housing, such as condominiums, must be performed in accordance…
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Under the Pre-Renovation Education Rule, I have the option of using a certificate of mailing to notify the owner or occupant. What is the difference between a certificate of mailing and certified mail?
A certificate of mailing is a receipt showing evidence of mailing, while certified mail provides proof of mailing and delivery of mail. When using the certificate of mailing option, no record is kept at the mailing office and a receipt is not obtained when mail is delivered to the addressee…
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When multiple contractors are involved in a single renovation, must every contractor provide pre-renovation education? Can a certified firm assign its responsibility to a property management company?
All firms performing, offering or claiming to perform renovations are responsible for ensuring compliance with the pre-renovation education requirements of the RRP Rule. However, it is unnecessary for the same notifications and information to be given out repeatedly during a single renovation. Accordingly, a firm may discharge the task by…
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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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Can I get access to the Emissions Inventory System if I am not a data provider to EPA?
The Emission Inventory System (EIS) is a secured database for EPA and State/Local and Tribal Air Agencies only. The EIS is used to develop the National Emission Inventory (NEI). While you cannot have access to EIS, you can have access to the current and past NEIs through EPA’s NEI website…
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Are biogenic emissions included in the emissions trends Tier 1 data?
No, the biogenic emissions are not included in the emissions trends Tier 1 data. If needed, users can add the biogenic data either as a separate Tier, or specify its inclusion in the “Miscellaneous” Tier 1 group.
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I am planning on sending the pamphlet via certificate of mailing to a tenant who occupies a unit scheduled to be renovated. Does the tenant’s name need to be addressed on the mailing, or is it acceptable to address the envelope to Attn: Tenant/Occupant?
Answer: The tenant’s name and address must be indicated on the mailing. The RRP Rule requires a renovator to provide the “Renovate Right” pamphlet to an adult in each unit. Therefore, the name and address of an adult occupant in each unit must be indicated on the mailing. The renovator…
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