Learn the Issues
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Initial Technical Support Documents for Area Designations Round 3
Initial TSD supporting 120-day letters responses to states recommending area designations.
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Initial Technical Support Documents for Area Designations Round 4
Initial TSD supporting 120-day letters responses to states recommending area designations.
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Intended Sulfur Dioxide Area Designations – August 2020
Recommendations for Areas to be Designated “Nonattainment” for the 2010 National Air Quality Standard for Sulfur Dioxide
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Mobile fuel tanker as a facility
Is a non-transportation related mobile fuel tanker with more than 55 gallons located near a 55 gallon drum storage area considered a facility? Perhaps. "Facility" is defined in Part 112 to mean "any mobile or fixed, onshore or offshore building, structure, installation, equipment, pipe, or pipeline (other than a vessel…
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Submittal Process when Claiming Confidential Business Information (CBI)
Pursuant to the risk management program regulations, facilities may make a claim of confidential business information (CBI) unless otherwise stated in 40 CFR §68.151. How does a facility that is claiming CBI submit its RMP? For a facility to claim information as CBI, the facility must submit to EPA a…
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Studies Related to the National Aquatic Resource Surveys
Access to information on tools and data that are related to the National Aquatic Resource Surveys (NARS).
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What does "relief system design basis" mean?
Relief systems include, but are not limited to, relief valves, relief headers, relief drums, and rupture disks. Design basis means documenting how the loads and sizes of the relief system, as well as inlet and outlet sizes, were determined. This includes a description of overpressure scenarios considered, the scenario that…
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Definition of Fuel
A flammable substance listed in 40 CFR §68.130 is excluded from the risk management program regulations when it is used as a fuel or held for sale as a fuel at a retail facility (§68.126). What is the definition of fuel for the purposes of this exclusion? There is no…
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What is the general duty clause?
What is the general duty clause under CAA §112(r)(1)? The CAA general duty clause directs owners and operators of stationary sources to identify hazards that may result from accidental releases, to design and maintain a safe facility, and to minimize the consequences of releases when they occur.
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What is a wellhead protection area and how can a facility determine if it is located in one?
Pursuant to 40 CFR §112.20, a facility that could reasonably be expected to cause substantial harm to the environment by discharging oil into or on the navigable waters or adjoining shorelines must prepare and submit a Facility Response Plan (FRP). Section 112.20(h)(2) and Part 112, Appendix F, Section 1.2 require…
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RMP*eSubmit preparer access
How does a new Preparer get access to a Risk Management Plan (RMP) via RMP*eSubmit? First, the person must register with CDX. To register with CDX, go to https://cdx.epa.gov/ and complete the registration process for a Risk Management Plan “Preparer”. Once set up as a “Preparer”, the Certifying Official needs…
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Requesting RMP*eSubmit authorization code
As the Certifying Official, how can I retrieve our lost Authorization Code needed by our new Preparer to access the facility’s Risk Management Plan (RMP) within RMP*eSubmit? The Certifying Official should contact the RMP Reporting Center (RMPRC@epacdx.net / 703-227-7650) to request the Authorization Code.
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Difference between an SPCC Tier I and Tier II qualified facility
In the SPCC regulations in 40 CFR Part 112, what is the difference between a Tier I and Tier II qualified facility? How did EPA establish the multi-tiered approach for qualified facilities? A Tier II qualified facility is one that has an aggregate aboveground oil storage capacity of 10,000 U.S…
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2023 Lead-Based Paint Technical Workshop
On November 1 and 2, 2023, the U.S. Environmental Protection Agency (EPA) and U.S. Department of Housing and Urban Development (HUD) will hold a virtual technical workshop to hear stakeholder perspectives on lead-based paint.
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NPDES PGP Regulatory History Documents
A collection of NPDES Pesticide General Permit regulatory history documents.
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National Pretreatment Program Variances
Overview of types of variances that can be granted for pretreatment standards.
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Vessel Technical Studies
A collection of vessel technical studies.
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Beneficial Uses of Manure and Environmental Protection
The Beneficial Uses of Manure and Environmental Protection is a two-page outreach piece developed with agriculture industry organizations.
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Final 2008 Vessel General Permit (VGP) Documents
Court orders, press releases, and other documents pertaining to the Final 2008 VGP.
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NE Fremont Street Green Street Project
Stormwater retrofit of an existing residential collector street – demonstration project.