The PA evaluation relied on RBL estimates for these eleven species derived using the strong OTC-based mostly E-R capabilities, blue hunting deer for hunter all over printed shirt noting that analyses newly carried out on this evaluation have lowered the uncertainty related to using OTC E-R functions to predict tree progress effects within the subject (U.S. EPA, 2014c, section 5.2.1; U.S. EPA, 2013, part
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2013, contains 17 Class I areas for which screens had been identified in this method. For context, we observe that this represents almost a quarter of the Class I areas for which there are O3 displays inside 15 km. In contemplating comments on the need for revision, we first note the advice and recommendations from CASAC with regard to the adequacy of the current standard. In its evaluation of the second draft PA, CASAC said that it “supports the scientific conclusion in the Second Draft PA that the present blue hunting deer for hunter all over printed shirt secondary normal just isn’t adequate to guard in opposition to current and anticipated welfare effects of ozone on vegetation” . With regard to visible foliar injury, as summarized in the proposal, the PA acknowledges the long-standing evidence that has established that O3 causes diagnostic visible foliar harm signs on studied bioindicator species and also recognizes that such O3-induced impacts have the potential to influence the public welfare in scenic and/or recreational areas, with seen foliar harm associated with essential cultural and leisure ecosystem companies to the public, such as scenic viewing, wildlife watching, climbing, and camping, which are of significance to the public welfare and loved by hundreds of thousands of Americans yearly, producing hundreds of thousands of dollars in economic value (U.S. EPA, 2014b, section 7.1). In addition, a number of tribes have indicated that many of the O3-delicate species are culturally significant (U.S. EPA, 2014c, Table 5-1). Similarly, the PA notes CASAC comments that “seen foliar harm can impact public welfare by damaging or impairing the meant use or service of a resource,” including by way of “visible harm to ornamental or leafy crops that affects their economic worth, yield, or usability; seen damage to vegetation with particular cultural significance; and visible injury to species occurring in pure settings valued for Given the above, and paying attention to CASAC views, the PA acknowledges seen foliar damage as an necessary O3 impact which, relying on severity and spatial extent, might reasonably be concluded to be of public welfare significance, especially when occurring in nationally protected areas, corresponding to nationwide parks and other Class I areas.
the PA takes notice of the large uncertainties associated with these analyses (see U.S. EPA, 2014b, Table 6-27) and the potential for these findings to underestimate the response on the national scale. While noting the potential usefulness of considering predicted and anticipated impacts to these services in assessing the extent to which the current information supports or calls into query the adequacy of the protection afforded by the current standard, the PA additionally recognizes vital uncertainties associated with the absolute magnitude of the estimates for these ecosystem service endpoints which restricted the load workers placed on these outcomes (U.S. EPA, 2014c, sections 5.2 and 5.7). In considering the extent to which such progress-associated effects may be expected to happen beneath circumstances that meet the present secondary standard, the PA centered particularly on tree seedling RBL estimates for the eleven species for which robust E-R capabilities have been developed, noting the CASAC concurrence with use of O3-associated tree biomass loss as a surrogate for related effects extending to the ecosystem scale (U.S. EPA, 2014c, p. 5-80, Frey, 2014c, p. 10).