Laserfiche WebLink
ii <br /> Report on Sail Vapor Sampling and Human Health Risk Assessment <br /> AECOM <br /> Contents <br /> 1.0 Introduction................................................................................................................................................... 1-1 1-1 <br /> ' 1.1 Background and Objectives .................................................................. <br /> .. . ........................1-1 <br /> 1.2 Site Location and Description................................................................. . . <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 /> 2.22 Leak Testing........................................................................................ <br /> 2.2.3 Purging.................................................................................................................. <br /> 2-2 <br /> 2.2.4 Sample Collection.................................................................................................2-2 <br /> ' 2.3 September 9, 2010, Event...................................................................................................2-2 <br /> 2.3.1 Analytical Results..................................................................................................2-3 <br /> 1 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/COPC Selection.......................................................................3-2 <br /> 3.1.1 Methods.................................................................................................................3-2 <br /> 3.1.2 Results ..................................................................................................................3-2 <br /> i3.2 Uncertainty Assessment......................................................................................................3-3 <br /> 3.2.1 Step 1: Screening Level/COPC Selection ........................................................3-3 <br /> ' 3.2.2 Step 2: Indoor Air Modeling and Estimation of Potential Risk.............................3-3 <br /> 3.2.3 Additional Uncertainty...........................................................................................3-5 <br /> 3.3 Vapor Intrusion Modeling and Risk Evaluation Summary..................................................3-6 <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 /> 6014657&Mi0 December 15,2010 <br />