Laserfiche WebLink
TABLE OF CONTENTS <br /> 1.0 INTRODUCTION..........................................................................................................................I <br /> 1.1 Authorization............................................................................................................1 <br /> 1.2 Purpose...................................................................................................................... 1 <br /> 1.3 Site Characterization Objectives...............................................................................2 <br /> 1.4 Site Characterization Data Quality Objectives..........................................................3 <br /> 2.0 SITE HISTORY AND BACKGROUND.....................................................................................3 <br /> 2.1 Site Description.........................................................................................................3 <br /> 2.2 Project History..........................................................................................................4 <br /> 3.0 GEOLOGY AND HYDROGEOLOGY........................................................................................11 <br /> 4.0 CONCEPTUAL SITE MODEL......................................................................................................14 <br /> 5.0 PROPOSED APPROACH TO SITE CHARACTERIZATION.............................................18 <br /> 6.0 PROPOSED SCOPE OF WORK................................................................................................21 <br /> 6.1 Pre-Field Activities.................................................................................................21 <br /> 6.2 Drilling Permits.......................................................................................................21 <br /> 6.3 Proposed Vapor Intrusion Assessment....................................................................22 <br /> 6.3.1 Proposed Indoor Air Sampling Methods.....................................................22 <br /> 6.3.2 Proposed Sub-Slab Soil Gas Probe Installation Methods...........................23 <br /> 6.4 Proposed Site Boundary, Sewer Lateral, and Petroleum Hydrocarbon Release Soil <br /> GasAssessment................................................................................................................23 <br /> 6.4.1 Proposed Shallow Soil Gas Sample Probe Installation Methods................24 <br /> 6.5 Proposed Soil Gas Sample Collection Methodology.............................................25 <br /> 6.5.1 Shut-In Test.................................................................................................25 <br /> 6.5.2 Leak Test.....................................................................................................25 <br /> 6.5.3 Sample Flow Rate.......................................................................................25 <br /> 6.5.4 Purge Volume .............................................................................................26 <br /> 6.5.5 Soil Gas Sample Analysis...........................................................................26 <br /> 6.6 Proposed Groundwater Assessment for the Quality Cleaners.................................26 <br /> 6.6.1 Proposed Groundwater Sampling Methodology.........................................27 <br /> 6.6.2 Proposed Groundwater Sample Analysis....................................................27 <br /> 6.7 Proposed Quarterly Groundwater Monitoring Program..........................................27 <br /> 6.8 Proposed Petroleum Hydrocarbon Release Assessment.........................................28 <br /> 6.8.1 Proposed Soil and Groundwater Sample Analysis......................................28 <br /> 6.9 Proposed Assessment of Environmentally Persistent Pesticides............................29 <br /> 6.10 Proposed Management of Investigation Derived Waste.........................................29 <br /> 6.11 Proposed Land Survey of Monitoring Wells and Sample Locations......................30 <br /> 7.0 PROPOSED REGULATORY SCREENING LEVELS...........................................................30 <br /> 8.0 SCHEDULE ................................................................................................33 <br /> 9.0 REPORTING................................................................................................33 <br /> 10.0 LIMITATIONS ..............................................................................................33 <br /> 11.0 SIGNATURES OF PARTICIPATING PROFESSIONALS...................................................34 <br /> Figures: <br /> 1 Topographic Map <br /> 2 Site Plan <br /> 3 December 2014 Soil Gas and January 2015 Soil and Groundwater Sample <br /> Locations <br /> 4 May 2015 Soil Gas and Groundwater Sample Locations <br />