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What is the definition of "offsite property damage?"

I am working on the five-year accident history portion of the hazard assessment under the RMP.  Section 68.42(a) tells me to include "all accidental releases from covered processes that resulted in deaths, injuries, or significant property damage on site,

When does the accident history's five-year period begin?

The hazard assessment requirements under 40 CFR Part 68, Subpart B include provision of a five-year accident history, as specified at §68.42.  When does the five-year period to be reported in the accident history begin? The five-year accident history mu

Definition of recreational area for determining offsite impacts in RMP

What is considered a recreational area? Recreational areas would include land that is designed, constructed, designated, or used for recreational activities.  Examples are national, state, county, or city parks, other outdoor recreational areas such as

Non-residential population in off-site consequence analyses

Must an owner or operator include in their risk management plan (RMP) estimates of the non-residential population when defining off-site impacts for the off-site consequence analysis?   Owners or operators are required to note in the RMP the presence of

For toxic endpoints, are milligrams per liter (mg / L) equivalent to parts per million (ppm)?

The endpoint concentrations for regulated toxic substances under the risk management program rule (40 CFR Part 68 Appendix A) are listed in units of milligrams per liter (mg/L).  Is this equivalent to parts per million (ppm)?   No, mg/L is not always

Worst-case release scenarios for toxics and flammables involving the same process

At my facility, if the worst-case release scenarios for regulated toxic substances and the worst-case scenario for regulated flammable substances involve the same process, must I analyze both? Yes. If the worst-case release scenarios for regulated toxic s

How often must compliance audits be performed?

How often must owners or operators of stationary sources subject to the risk management program regulations perform compliance audits? The regulations at 40 CFR §§68.58(a) and 68.79(a) state that owners or operators must certify that they have evaluated

Different results using ALOHA and RMP*Comp

I tried running the same scenarios in ALOHA and in RMP*Comp. I got different answers. Why? The results you obtain using RMP*Comp may not closely match the results you obtain running the same release scenario in a more sophisticated air dispersion model s

RMP*Comp and emergency response

Can I use RMP*Comp for emergency response? No. It's a planning tool. Many other tools are available for response, including ALOHA. You can learn more by reading CAMEO tools for RMP.

How did EPA select the list of regulated substances?

The list of regulated substances under the chemical accident prevention provisions is found in 40 CFR Part 68. How did EPA select the substances to be included in this list? The chemical accident prevention provisions promulgated pursuant to Section 112(r

What does "control of the same person" mean?

Control of the same person refers to corporate control, not site management.  If two divisions of a corporation operate at the same site, even if each operation is managed separately, they will count as one source provided the other criteria are met becau

What is the content of Part 68, Subpart F and when was it promulgated?

The regulatory text of the June 20, 1996, Risk Management Program Rule (61 FR 31668) does not include Subpart F.  What is the content of Subpart F and when was it promulgated? Subpart F of 40 CFR Part 68 consists of the regulations concerning the list of

When must RMPs be submitted, updated, and corrected?

When must the risk management plans (RMPs) required under 40 CFR Part 68, Subpart G, be submitted? When are updates and corrections required? Compliance with the risk management program requirements (including submission of an RMP) is required by the date

Distinction between "process" and "covered process"

What is the distinction between a "process" and a "covered process" under the risk management program regulations at 40 CFR Part 68? Process means any activity involving a regulated substance, including any use, storage, manufacturing, handling, or on-sit

Why did EPA select the twenty percent concentration cut-off value for aqueous ammonia?

The list of regulated substances in 40 CFR §68.130 includes aqueous ammonia that is at a concentration of 20 percent (by weight) or greater. Why did EPA select 20 percent as the concentration cut-off value? Commonly used commodity solutions of ammonia (w