Laserfiche WebLink
Stantec <br /> L & M OPERABLE UNIT- FOURTH QUARTER AND ANNUAL 2012 SITE STATUS, <br /> REMEDIAL SUMMARY, AND GROUNDWATER MONITORING REPORT <br /> Table of Contents <br /> 2.7.2.2 Fuel Oxygenates and Hydrocarbon Concentrations .........................................2.16 <br /> 2.8 ARSENIC........................................................................................................................2.18 <br /> 2.9 PURGE WATER STORAGE AND DISPOSAL................................................................2.19 <br /> 3.0 STATUS OF REMEDIATION ACTIVITIES .......................................................................3.1 <br /> 3.1 DUAL PHASE EXTRACTION SYSTEM............................................................................3.1 <br /> 3.1.1 Dual Phase Extraction Systems Summary .........................................................3.1 <br /> 3.1.2 Dual Phase Extraction System Operational and Analytical Data—4Q12............3.1 <br /> 3.2 L&M OU AND APARTMENT SOIL VAPOR EXTRACTION SYSTEMS.............................3.2 <br /> 3.2.1 L&M OU and Apartment Soil Vapor Extraction Systems Summary.....................3.2 <br /> 3.2.2 L&M OU and Apartment Soil Vapor Extraction Systems Operational Data—4Q12 <br /> ...........................................................................................................................3.2 <br /> 3.2.3 Apartment Soil Vapor Extraction System Analytical Data —4Q12.......................3.2 <br /> 3.2.4 L&M OU Soil Vapor Extraction System Analytical Data —4Q12..........................3.3 <br /> 3.3 SEPARATE PHASE HYDROCARBON REMOVAL...........................................................3.3 <br /> 4.0 SOIL VAPOR SAMPLING ................................................................................................4.1 <br /> 4.1 PREVIOUS SOIL VAPOR SAMPLING ACTIVITIES..........................................................4.1 <br /> 4.2 SOIL VAPOR SAMPLING FOURTH QUARTER 2012 ......................................................4.1 <br /> 4.2.1 Soil Vapor Sampling...........................................................................................4.1 <br /> 4.2.2 APSV Soil Vapor Concentrations .......................................................................4.2 <br /> 4.2.2.1 APSV Trends .....................................................................................................4.2 <br /> 4.2.3 UPSV Soil Vapor Concentrations .......................................................................4.2 <br /> 4.2.3.1 UPSV Trends .....................................................................................................4.2 <br /> 4.2.4 Quality Assurance/Quality Control-Samples and General Laboratory Notes.......4.3 <br /> 4.2.5 Conclusions and Recommendations ..................................................................4.3 <br /> 5.0 SUMMARY OF 2012 ANNUAL MONITORING AND SAMPLING.....................................5.1 <br /> 5.1 SHALLOW ZONE TRENDS IN GROUNDWATER GRADIENT.........................................5.1 <br /> 5.2 B-ZONE TRENDS IN GROUNDWATER GRADIENT........................................................5.1 <br /> 5.3 C-ZONE TRENDS IN GROUNDWATER GRADIENT .......................................................5.1 <br /> 5.4 D-ZONE TRENDS IN GROUNDWATER GRADIENT .......................................................5.2 <br /> 5.5 SHALLOW AND DEEP ZONE SPH AND TRENDS ..........................................................5.2 <br /> 5.5.1 Shallow Zone Trends .........................................................................................5.2 <br /> 5.5.2 Deep Zone Trends .............................................................................................5.2 <br /> 5.6 A-ZONE ISOCONCENTRATION TRENDS.......................................................................5.3 <br /> 5.6.1 TPHg..................................................................................................................5.3 <br /> 5.6.2 TPHd..................................................................................................................5.3 <br /> 5.6.3 TPHo..................................................................................................................5.3 <br /> 5.6.4 Benzene.............................................................................................................5.4 <br /> 5.6.5 MtBE ..................................................................................................................5.4 <br /> 5.6.6 TBA....................................................................................................................5.4 <br /> 5.7 B-ZONE ISOCONCENTRATION TRENDS.......................................................................5.4 <br /> 5.7.1 TPHg..................................................................................................................5.4 <br /> 5.7.2 TPHd..................................................................................................................5.4 <br /> 5.7.3 TPHo..................................................................................................................5.5 <br /> I:\Tidewater\TW Stockton(P2A)\QMRs\2012\4Q12-Ann ual\4Q12 and Annual QSSR QRSR QMR Stockton_FINAL.doc i i <br />