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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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Underground Storage Tanks in SPCC Plans
If a gas station that has less than 42,000 gallons completely buried oil storage capacity and no aboveground oil storage capacity installs a new aboveground tank with a capacity greater than 1,320 gallons, must the facility’s Spill Prevention, Control, and Countermeasure (SPCC) Plan address the underground storage tanks (USTs) in…
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Container capacity less than 55 gallons
Do facilities need to consider containers that are less than 55 gallons for applicability under 40 CFR Part 112? No. The third column of page 47066 of the July 17, 2002 Preamble states that "You need only count containers of 55 gallons or greater in the calculation of the regulatory…
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Oil-filled equipment capacity
When counting against the 1,320 aboveground storage capacity threshold, would operational storage of oil (such as in a hydraulic press) be used? Oil which is contained in equipment is required to be factored into the storage capacity for the facility even though the oil may be only used for ancillary…
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If your farm does not have fuel storage that will flow into US waters by a ditch, river, stream, or lake, do you have to prepare a SPCC Plan?
No. EPA suggests you use a common sense approach. If one of your oil storage tanks leaks, and the spilled oil would not flow into navigable waters or adjoining shorelines, you do not have to prepare a Plan. Remember that you still have the responsibility to clean up any spilled…
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Ground water pathways related to reasonably expected to discharge
The SPCC Rule applies to facilities that could reasonably be expected to discharge into navigable waters (40 CFR §112.2(a)). Does a facility need to consider ground water pathways when determining if a discharge of oil could reasonably be expected to reach navigable waters? Owners and operators should consider whether on-site…
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SPCC responsibility for tanks on leased property
What if I leased some parcels, and there are tanks already present? Am I responsible for these tanks? You could be. If you plan to use these tanks, make sure in your lease agreement, it states who is responsible for these tanks. If the lease does not state who is…
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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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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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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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