Virginia Unified Risk Assessment Model – VURAM User Guide For Risk Assessors Updated October 2018 Table of Contents I. NOTICE .......................................................................................................................................................5 II. Disclaimer..................................................................................................................................................5 III. Acknowledgements..................................................................................................................................5 IV. Contacts Table .........................................................................................................................................5 1.0 Virginia Unified Risk Assessment Model (VURAM).................................................................................6 1.1 Software Requirements ......................................................................................................................6 1.2 User Guide ..........................................................................................................................................6 1.3 Recommended Use.............................................................................................................................7 1.4 Model Limitations ...............................................................................................................................7 1.5 Prerequisites for Computation ...........................................................................................................8 1.5.1 Conceptual Site Model (CSM) ......................................................................................................8 1.5.2 Fate and Transport.......................................................................................................................8 1.5.3 Sampling.......................................................................................................................................9 2.0 Running VURAM....................................................................................................................................10 2.1 Background Page...............................................................................................................................11 2.2 Introduction Page..............................................................................................................................12 2.3 Standard Defaults Page.....................................................................................................................13 2.4 Site Name Page .................................................................................................................................14 2.5 Screening Levels Risk Assessment Module.......................................................................................14 2.5.1 Screening Criteria.......................................................................................................................15 2.5.2 Select A Program Page...............................................................................................................22 2.5.3 Setup Page .................................................................................................................................23 2.5.4 Screening Page...........................................................................................................................24 2.5.5 Screening Report........................................................................................................................30 2.5.6 Alternate Concentration Limits (ACL) ........................................................................................36 2.7 Quantitative Risk Assessment Module .............................................................................................40 2.7.1 Calculation Criteria.....................................................................................................................40 2.7.2 Setup Page .................................................................................................................................44 2.7.3 Calculation Pages .......................................................................................................................45 2.7.4 Quantitative Risk Assessment Report........................................................................................56 2 VUURM User Guide Virginia DEQ 1111 E. Main St., Suite 1400 Richmond, VA 23219 2.8 Media Concentration Pages..............................................................................................................62 2.8.1 Soil Concentrations ....................................................................................................................64 2.8.2 Groundwater Concentrations ....................................................................................................65 2.8.3 Air Concentrations .....................................................................................................................66 2.8.4 Surface Water Concentrations...................................................................................................68 2.8.5 Sediment ....................................................................................................................................70 2.8.6 Food ...........................................................................................................................................71 2.9 Site-Specific Background Comparison Module.................................................................................71 2.9.1 Site-Specific Background Comparison Page...............................................................................73 2.9.2 Site Specific Background Comparison Report............................................................................74 2.10 FAQ - Troubleshooting Common Errors..........................................................................................75 2.10.1 Security warning VURAM does not auto-start: ........................................................................75 2.10.2 Error message when attempting to proceed:..........................................................................75 2.10.3 Pages do not fit the monitor: ...................................................................................................76 2.10.4 VURAM is running very slow: ...................................................................................................76 2.10.5 Not all selected analytes included in risk assessment: ............................................................76 2.10.6 Report display blank or will not scroll......................................................................................76 2.10.7 VURAM seems to be broken: ...................................................................................................76 2.10.8 VURAM will not run on Mac: ...................................................................................................76 2.10.9 ACL Tables clip when printing:.................................................................................................76 3.0 Modeling Approach...............................................................................................................................77 3.1 Virginia DEQ Programs......................................................................................................................77 3.1.1 RCRA Hazardous Waste Permitting & Corrective Action...........................................................77 3.1.2 CERCLA a.k.a. Superfund............................................................................................................78 3.1.3 Federal Facilities under CERCLA.................................................................................................78 3.1.4 RCRA Subtitle D- Solid Waste.....................................................................................................79 3.1.5 Brownfields and VRP..................................................................................................................79 3.2 Risk Assessment Process...................................................................................................................79 3.3 Modeling Parameters & Data Sources..............................................................................................81 4.0 Bibliography ..........................................................................................................................................82 Appendices..................................................................................................................................................87 A1.0 Equations and Parameters..............................................................................................................87 3 VUURM User Guide Virginia DEQ 1111 E. Main St., Suite 1400 Richmond, VA 23219 A1.1 Residential ..................................................................................................................................89 A1.2 Industrial / Commercial ............................................................................................................115 A1.3 Construction .............................................................................................................................118 A1.4 Recreator ..................................................................................................................................122