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  • Redoing calculations if RMP*Comp is updated

    Will RMP*Comp be updated? If so, would I have to redo calculations I might already have made with an earlier version? No, you do not have to redo your work if you have already completed your consequence analyses. RMP*Comp is based on the EPA's Offsite Consequence Analysis Guidance (OCA Guidance)…

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  • Different distances to toxic endpoints with different versions of RMP*Comp

    I've noticed that for certain chemicals, RMP*Comp gives substantially different distances to the toxic endpoint than previous versions. Why? In the current version of RMP*Comp, we have incorporated new chemical-specific distance tables for ammonia, chlorine, and sulfur dioxide. The generic tables are still used for other chemicals (you can see…

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  • Distance to endpoint calculations used by RMP*Comp

    Does RMP*Comp perform some math or modelling in order to arrive at an endpoint distance, or is it simply interpolating from the tables in the EPA's Offsite Consequence Analysis Guidance (OCA Guidance)? RMP*Comp follows the procedures set out in the OCA Guidance . This means that for some scenarios, the…

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  • Where can I go to learn more?

    PitWatch.org is the online home of the Berkeley Pit Public Education Committee. This volunteer committee educates residents, students, and the public about the environmental management of the Berkeley Pit.  Information includes the geology, hydrology, current events, and ongoing academic research associated with the Berkeley Pit. This committee frequently shares their…

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  • Is the volume of renewable fuels a fixed number of gallons? How does this affect an obligated party's requirements?

    See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The volume of renewable fuel used as the basis for calculating the percentage renewable fuel standards is fixed by CCA 211(o)(2)(B) for certain years (through 2012 for biomass-based diesel and 2022 for other renewable fuels), with volumes after…

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  • 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 .

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  • Minimum and Maximum Distance to Endpoint

    The Chemical Accident Prevention Provisions require the completion of a worst-case release scenario analysis (40 CFR §68.25). This analysis includes estimating the greatest distance to endpoint as defined by the parameters in §68.22. Is there a required minimum or maximum distance for the distance to endpoint in the worst case…

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  • Can 2009 Cellulosic Biomass ethanol RINs (with a D code of 1) be used to satisfy an obligated party?s Cellulosic Biofuel and/or Advanced Biofuel RVO in 2010? Is there a 20% rollover cap on this type of RIN being used to satisfy the Cellulosic and/or Advan

    See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . 2009 cellulosic biomass ethanol RINs with a D code of 1 that are not used for compliance purposes in 2009 can be used to meet the cellulosic biofuel, advanced biofuel, and total renewable fuel RVOs in 2010. The…

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  • How can I get involved?

    EPA encourages the public to review our Community Involvement Plan (pdf) (66pp, 6MB) that lays out our specific community involvement activities, and how to become involved at the Site. You can also contact our Community Involvement Coordinator, Mackenzie Meter ( [email protected] ), for site updates and to be added to…

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  • Local meteorological data for alternative release scenarios

    For alternate release scenarios, RMP*Comp uses set values for meteorological conditions like humidity, wind speed, temperature, stability class, and so on. Is there a way to change those values? I want to use meteorology data from my own location. RMP*Comp indeed uses fixed values for certain atmospheric parameters, and does…

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  • 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 such as ALOHA or DEGADIS. That's because of…

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  • I understand under CAA Section 211(o), compliance can be deferred for a year as long as the obligated party complies the next year. How does one petition for a one-year deferral? What criteria are considered?

    See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . According to §80.1427(b), an obligated party may carry a deficit from one compliance year to the next under certain conditions. No petition for a deficit carryover is required. An obligated party will be presumed to be carrying over…

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