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Stantec <br />L & M OPERABLE UNIT- THIRD QUARTER 2010 SITE STATUS, REMEDIAL SUMMARY, <br />AND GROUNDWATER MONITORING REPORT <br />Table of Contents <br />1.0 <br />1.1 <br />1.2 <br />1.3 <br />INTRODUCTION..............................................................................................................1.1 <br />SITE DESCRIPTION.........................................................................................................1.2 <br />SUMMARY OF PREVIOUS INVESTIGATIONS AND REMEDIAL ACTION ......................1.3 <br />REGIONAL GEOLOGY/HYDROGEOLOGY.....................................................................1.8 <br />2.0 <br />GROUNDWATER MONITORING AND SAMPLING.........................................................2.1 <br />2.1 <br />GROUNDWATER MONITORING AND SAMPLING PROCEDURES................................2.1 <br />2.2 <br />LABORATORY ANALYSIS...............................................................................................2.2 <br />2.3 <br />THIRD QUARTER 2010 SHALLOW GROUNDWATER RESULTS...................................2.2 <br />2.3.1 <br />Shallow Zone Groundwater Gradient..................................................................2.2 <br />2.3.2 <br />Shallow Zone Groundwater Quality Data............................................................2.3 <br />2.3.3 <br />Separate Phase Hydrocarbons...........................................................................2.3 <br />2.3.3.1 <br />Petroleum Hydrocarbons and Fuel Oxygenates.................................................2.4 <br />2.3.3.2 <br />Volatile Organic Compounds..............................................................................2.5 <br />2.3.3.3 <br />Semi -volatile Organic Compounds.....................................................................2.5 <br />2.3.3.4 <br />Dissolved Metals................................................................................................2.6 <br />2.3.3.5 <br />Quality Assurance/Quality Control Samples.......................................................2.6 <br />2.3.3.6 <br />General Laboratory Notes..................................................................................2.7 <br />2.4 <br />THIRD QUARTER 2010 B -ZONE GROUNDWATER RESULTS.......................................2.8 <br />2.4.1 <br />B -Zone Groundwater Gradient...........................................................................2.8 <br />2.4.2 <br />B -Zone Groundwater Quality Data.....................................................................2.8 <br />2.4.2.1 <br />Separate Phase Hydrocarbons...........................................................................2.9 <br />2.4.2.2 <br />Petroleum Hydrocarbons and Fuel Oxygenates.................................................2.9 <br />2.4.2.3 <br />Volatile Organic Compounds............................................................................2.10 <br />2.4.2.4 <br />Semi -volatile Organic Compounds...................................................................2.10 <br />2.4.2.5 <br />Dissolved Metals..............................................................................................2.10 <br />2.4.2.6 <br />Quality Assurance/Quality Control Samples .....................................................2.11 <br />2.4.2.7 <br />General Laboratory Notes................................................................................2.11 <br />2.5 <br />THIRD QUARTER 2010 C -ZONE GROUNDWATER RESULTS.....................................2.12 <br />2.5.1 <br />C -Zone Groundwater Gradient Data.................................................................2.12 <br />2.5.2 <br />C -Zone Groundwater Quality Data...................................................................2.12 <br />2.5.2.1 <br />Separate Phase Hydrocarbons.........................................................................2.12 <br />2.5.2.2 <br />Petroleum Hydrocarbons and Fuel Oxygenates ...............................................2.12 <br />2.5.2.3 <br />Volatile Organic Compounds............................................................................2.13 <br />2.5.2.4 <br />Semi -volatile Organic Compounds...................................................................2.14 <br />2.5.2.5 <br />Dissolved Metals..............................................................................................2.14 <br />2.5.2.6 <br />Quality Assurance/Quality Control Samples .....................................................2.14 <br />2.5.2.7 <br />General Laboratory Notes................................................................................2.14 <br />2.6 <br />THIRD QUARTER 2010 D -ZONE GROUNDWATER RESULTS.....................................2.15 <br />2.6.1 <br />D -Zone Groundwater Gradient Data.................................................................2.15 <br />2.6.2 <br />D -Zone Groundwater Quality Data...................................................................2.15 <br />2.6.2.1 <br />Separate Phase Hydrocarbons.........................................................................2.15 <br />2.6.2.2 <br />Petroleum Hydrocarbons and Fuel Oxygenates ...............................................2.16 <br />Iffidewater7W Stockton (Parcel 2A-0415)\Reports\QMR\2010\3010\3010QSSRORSROMR Stockton_FINAL.doc <br />