Laserfiche WebLink
AECOM Report on Soil Vapor Sampling and Human Health Risk Assessment <br /> II <br /> Contents <br /> 1.0 Introduction................................................................................ <br /> ...................................... 1-1 <br /> 1.1 Background and Objectives ................................................................................................1-1 <br /> 1.2 Site Location and Description..............................................................................................1-1 <br /> 2.0 Soil Vapor Sampling.......................................................................................................2-1 <br /> 2.1 Vapor Probe Installation ......................................................................................................2-1 <br /> 2.2 Soil Vapor Sampling Procedures........................................................................................2-1 <br /> 2.2.1 Sampling Equipment.............................................................................................2-1 <br /> 2-1 <br /> 2.2.2 Leak Testing................................................................................ .......................................2-2 <br /> ..... <br /> 2.2.3 Purging..........................................................................................................................2-2 <br /> 2.2.4 sample Collection.......................................................... <br /> 2.3 September 9, 2010, Event...................................................................................................2-2 <br /> 2.3.1 Analytical Results..................................................................................................2-3 <br /> 2.4 October 20,2010, Event......................................................................................................2-5 <br /> 2.4.1 Analytical Results..................................................................................................2-5 <br /> 2.5 Discussion of Results ..........................................................................................................2-7 <br /> 3.0 Vapor Intrusion Modeling and Risk Analysis..............................................................3-1 <br /> 3.1 Step 1: Screening Level I COPC Selection .......................................................................3-2 <br /> 3.1.1 Methods................................................................................................................. <br /> 3-2 <br /> 3.1.2 Results ..................................................................................................................3-2 <br /> 3.2 Uncertainty Assessment.......................................... <br /> ..................3-3 <br /> 3.2.1 Step 1: Screening Level/COPC Selection......................... . ............................33 <br /> 3.22 Step 2: Indoor Air Modeling and Estimation of Potential Risk.............................3-3 <br /> 3.2.3 Additional Uncertainty 3-5...........................................................................................3-63.3 Vapor Intrusion Modeling and Risk Evaluation Summary.................................................. <br /> 4.0 Conclusions and Recommendations ...........................................................................4-1 <br /> 4.1 Summary of Findings...........................................................................................................4-1 <br /> 4.2 Conclusions..........................................................................................................................4-1 <br /> 4.3 Recommendations...............................................................................................................4-2 <br /> 5.0 References.......................................................................................................................5-1 <br /> December 15,2010 <br /> 60146576-M10 <br />