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Johnson and Ettinger(199 1)Model for Subsurface Vapor Intrusion into`13ildings Solid ... Page 2 of 2 <br /> U V <br /> Finally, a new fact sheet has been constructed that gives the procedures used to correct the <br /> Henry's law constant of a chemical for the,actualrsoil or ground.water-temperature. The <br /> procedures in the fact sheet are the same as those used in the 3-phase models for correcting <br /> the Henry's law constant. These procedures and calculations-pan-be used_wben-adding new <br /> chemicals and associated ch6mical properties to those already included in the models. <br /> User's Guide for the 3-Phase System Models and the Soil Gas Models: <br /> User's Guide for Evaluating Subsurface Vapor Intrusion Into Buildings (PDF) (133 pp, <br /> 1.3MB, About PDF) <br /> i <br /> I <br /> 3-Phase System Models and Soil Gas Models: <br /> Excel zip file (ZIP 282K) <br /> User's Guide for the NAPL Models: <br /> I <br /> User's Guide for the NAPL SCREEN and NAPL-ADV Models for Subsurface Vapor Intrusion into <br /> Buildings (PDF) (17 pp, 64K, About PDF) <br /> NAPL Models (Excel Only) and Important Readme File: <br /> NAPL zip file (zip 1MB) <br /> Fact Sheet for Correcting the Henry's Law Constant for Temperature (PDF) (9 pp, 186K; About <br /> PDF) <br /> http://www.epa.gov/oswer/riskassessment/airmodel/J*ohnson_ettinger.htm 6/7/2011 <br />