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Criteria for selecting alternative release scenarios
As part of the hazard assessment, owners and operators of Program 2 and Program 3 covered processes must identify and analyze alternative release scenarios (40 CFR §68.28). What criteria should be used when selecting an alternative release scenario? The owner or operator of a stationary source subject to the risk…
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Does the distance to endpoint start at the process or stationary source boundary?
When selecting the worst-case release scenario for Program 2 and 3 processes as required by 40 CFR §68.25, a stationary source owner or operator must analyze the release scenario that results in the greatest distance to an endpoint. Does the "greatest distance to an endpoint" refer to the greatest total…
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Using meteorological station data for off-site consequence analyses
For the purpose of the offsite consequence analyses required under 40 CFR Part 68, Subpart B, there are several instances in which data gathered at a local meteorological station may be used to establish the modeling parameters of wind speed, atmospheric stability, temperature, and humidity for the stationary source. How…
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Underground storage tank off-site impacts to groundwater, drinking water, or soil
For the worst-case and alternative release scenarios of an underground storage tank, should I consider any impact on groundwater, drinking water, or soil? No. As part of the worst-case and alternative release scenarios, you need to define the offsite impacts to the environment (40 CFR §68.33) by listing the environmental…
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Administrative controls considered when determining worst-case release quantity
For the purpose of analyzing the worst-case release scenario required as part of the hazard assessment at 40 CFR Part 68, Subpart B, the worst-case release quantity is identified as the greatest amount held in a single vessel or pipe, taking into account administrative controls that limit the maximum quantity…
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Are Mechanical Controls Considered Administrative Controls?
For the purpose of analyzing the worst-case release scenario required as part of the hazard assessment at 40 CFR Part 68, Subpart B, the worst-case release quantity is identified as the greatest amount held in a single vessel or pipe, taking into account administrative controls that limit the maximum quantity…
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Worst-case release from smaller process with larger distance to endpoint
The owner or operator of a stationary source covered by the risk management program regulations must conduct a worst-case release scenario analysis as part of the required hazard assessment (40 CFR §68.25). The worst-case release is defined as the release of the largest quantity of a regulated substance from a…
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Can I use any previous three year meteorological data for worst case scenario?
I am trying to complete my worst case release scenario for the Risk Management Plan under §68.25. I understand that I am required to use a wind speed of 1.5 m/s and F atmospheric stability class as specified in §68.22(b), unless I can prove that at no time over the…
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Does drilling holes in window frames to install window treatments such as shades and shutters qualify as minor repair and maintenance?
Yes, as long as the installation does not disturb more than six square feet of painted surface per room within a 30-day period. Question Number: 23002-15404 Find a printable PDF copy of all frequent questions pertaining to lead .
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If a renovator disrupts 20 square feet or less of painted surface per side on several sides of the exterior of one property, does the RRP Rule apply?
Yes. To qualify for the exception for minor repair and maintenance activities, the total amount of exterior paint disrupted must be 20 square feet or less. In addition, the job must not use prohibited practices or involve window replacement or demolition of painted surfaces. Question Number: 23002-18379 Find a printable…
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If I use a hammer to make a hole is a wall that is two feet on each side, does the RRP Rule apply?
Yes. Although making the hole disrupts less than six square feet of painted surface, using a hammer to make the hole is demolition of the surface, so the minor repair and maintenance exception does not apply. Making the hole using a cut-out technique that does not destroy the section of…
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When replacing an old wood door and frame with a new steel entry door and frame, how do I determine whether the job qualifies as a minor repair and maintenance activity?
When replacing an old wood door and frame with a new steel entry door and frame, how do I determine whether the job qualifies as a minor repair and maintenance activity? Do I calculate the amount of painted surface disrupted using the standard for interior renovations (six square feet or…
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How many worst-case release scenarios must be analyzed and documented in the RMP?
As a part of the hazard assessment requirements in 40 CFR Part 68, Subpart B, I must analyze worst-case release scenarios and document certain analyses in my risk management plan (RMP). How many worst-case release scenarios must be analyzed, and how many analyses must be specifically documented in the RMP…
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Identifying public receptors and property with restricted access
Does public receptor cover only buildings on a property or the entire property? If the owner of the land next to my site restricts access to the land, is it still a public receptor? Public receptors are not limited to buildings. For example, if there are houses near your property…
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When to Revise OCA
The risk management program in 40 CFR Part 68 requires facilities to conduct an off-site consequence analysis (OCA) to provide information to state, local, and federal governments and the public about the potential consequences of an accidental chemical release. When does a facility need to revise its OCA? The owner…
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