Resolution Copper Project and Land Exchange Environmental Impact Statement

Max Hampson

Response to Comment on the Resolution Project DEIS: Cumulative Impact Analysis for Ambient Air Quality Standards

The purpose of the CIA is to quantitatively evaluate cumulative air quality impacts due to emissions from the Project and reasonably foreseeable and known sources of emissions in the region near the Project. The identified nearby sources, modeling methods, and results of the CIA are presented in this technical memorandum.

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Response to Comment on the Resolution Copper Project DEIS: Action Item AQ9 - Surface Material Silt Content Used to Estimate Fugitive Dust Emissions

Response to US EPA comment #524-20, "While the Draft EIS relied on [a dispersion] analysis contained in the Resolution Copper Project NEPA Air Quality Impacts Analyses, we are concerned that it may have underestimated PM10, as well as PM2.5, emissions.[...]"

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Response to Comment on the Resolution Copper Project DEIS: Action Item AQ2 - 2017 Air Quality Data Potential to Influence DEIS Meteorological Data and Background Air Quality Data

Response to comment #278-5 from ADEQ, "The most recent 3 years of [air quality] monitoring data show that the concentration levels in Year 2017 were higher than previous years. However, the NEPA Air Quality Impacts Analyses does not consider the 2017 monitoring data for the background concentrations determination. Would it be a concern?"

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Max Hampson

Response to Comment on the Resolution Project DEIS: Cumulative Impact Analysis for Ambient Air Quality Standards

Response to Comment on the Resolution Copper Project DEIS: Action Item AQ9 - Surface Material Silt Content Used to Estimate Fugitive Dust Emissions

Response to Comment on the Resolution Copper Project DEIS: Action Item AQ2 - 2017 Air Quality Data Potential to Influence DEIS Meteorological Data and Background Air Quality Data

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