Models short-term impact

SCREEN can not explicitly determine maximum impacts from multiple sources, except for the procedure to handle multiple nearby stacks by merging emissions into a single "representative" stack. The reader is directed to the MPTER (Pierce and Turner, 1980) or ISC (EPA, 1995b) models on EPA s Support Center for Regulatory Air Models (SCRAM) Bulletin Board System (BBS) to model short-term impacts for multiple sources. With the... 

In addition to SCREENS, you can also download TSCREEN, VISCREEN, and CTSCREEN. TSCREEN is a screening model for determining maximum short-term impact from toxic releases. Click the filename to download the file. 

If it is necessary to consider short-term (hours or days) impact, the model PAL (4) will do a superior simulation of the area sources and a similar simulation of any point sources as done by the ISCLT model. 

ISCST3 - Industrial Source Complex - Short Term This model is used in more detailed studies of maximum air quality impacts (Phase 3 - Refined Modeling Analysis). The purpose is to compute short term concentration or deposition values, from multiple sources, on specified locations (i.e., receptors). To download the file, click the filename. This is the latest version of the regulatory model ISCST3 (00101) which was released by U.S. EPA on April 27, 2000. The file ISCST.ZIP is 1.60 MB (Executable, Source, Test Cases). You can also download the ISCST3 model evaluation references. 

Threshold concentrations for direct toxic effects of the most sensitive endpoints (responses of populations of crustaceans and insects) in model ecosystem experiments that studied the ecological impact of short term exposure to the insecticide chlorpyrifos... 

Calculations were made for the initial and final states of the waste, and also year by year to show the impact of radioactive decay. Modelling of any short-term increases in hazard potential arising from retrieval, immobilisation and store management operations is outside the scope of the RHP, which is intended to be a measure of progress towards passively safe storage rather than a continuous hazard monitor . The RHP is normally calculated either annually or upon work-stream completion. 

Automotive catalysts and jewelry are the two dominant markets for platinum (approximately 80%) and are important elements in the econometric model. The investment industry consumes a minor amount of material but can exert significant influence on short-term price. However, over long periods of time, investment should have zero impact on supply and demand. 

---