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ServiceParameters>MODELS>REGULATORY MODELS
ISC3 - Industrial Source Complex Model
Entry ID: ISC3_Model
Summary
Abstract:
Rooting depths were estimated from a global database of root profiles that was assembled from the primary literature to study relationships of abiotic and biotic factors associated with belowground vegetation structure. Variables used to characterize belowground vegetation structure include the depths above which 50% of all roots and 95% of all roots are located in the profile. For each root profile, information recorded includes latitude and longitude, elevation, soil texture, depth of organic horizons, type of roots measured (e.g., fine or total, live or dead), sampling methods, units of measurements (root mass, length, number, surface area), and sampling depth.
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The promulgation package which establishes AERMOD as the preferred air
dispersion model in the Agency's "Guideline on Air Quality Models" (Appendix W) in place of the ISC3 air dispersion model was signed by the Administrator of the US EPA on October 21. The package was then submitted to the Federal Register office and was published November 9, 2005. This rule ... 
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