One-Step Analysis. An easier and shorter approach to performing analyses with BenMAP,

targeted for beginning users. This combines all three major steps of BenMAP, i.e., a) calculate

changes in pollutant concentrations, b) use concentration-response (C-R) function to estimate

health incidences, and c) calculate economic benefits due to changes in morbidity and mortality

into a single process. However, the choices of analyses are limited. For example, the health

incidences and valuation functions are predefined, and the user cannot change them.

Ordinality. In relation to AQ monitors, ordinality refers to the number of monitor values in the

season that can exceed your standard. For example, if we had set the ordinality to 4, then a

monitor can have as many as three daily averages (assuming that we are using the daily average

metric to define our standard) greater than your standard without violating the standard. In terms

of rollback, if it has more than 3 daily averages in exceedance of the standard, then the rollback

technique will be applied to that monitor.

Ozone (O3). A gas composed of three oxygen atoms. It is not usually emitted directly into the

air, but at ground-level is created by a chemical reaction between oxides of nitrogen (NOx) and

volatile organic compounds (VOC) in the presence of sunlight. Ozone has the same chemical

structure whether it occurs miles above the earth (in what is sometimes referred to as “the ozone

layer”) or at ground-level, and can be "good" or "bad," depending on its location in the

atmosphere. For the purposes of BenMAP, the focus is on ground-level ozone, which can be



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