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4:nevron rroaucrs k.ompany <br />Former Chevron Service Station #9-5775, 301 West Kettleman Lane, Lodi, California January 11, 2002 <br />• <br />I:1Chevron1957751Periodic Monitoriag\Quarterly Progress Reportsl4thQuarter 200114th Quarter -2001 Progress Report.doc <br />Table of Contents <br />LO INTRODUCTION 1 <br />2.0 GROUNDWATER MONITORING AND SAMPLING 1 <br />2.2 Monitoring Well Gauge Data 1 <br />2.1 Sample Analytical Results 1 <br />3.0 EVALUATION OF GROUNDWATER EXTRACTION AND <br />SOIL VAPOR EXTRACTION SYSTEMS 2 <br />3.1 Groundwater Extraction System 2 <br />3.2 Soil Vapor Extraction System 3 <br />3.3 Estimated Mass of Hydrocarbons in Soil and Groundwater 4 <br />3.3.1 Estimated Mass of Petroleum Hydrocarbons Adsorbed <br />in Soil 4 <br />3.3.2 Estimated Mass of Hydrocarbons Dissolved in <br />Groundwater 5 <br />4.0 SITE CONCEPTUAL MODEL 5 <br />4.2 Chemical Concentrations vs. Time and Distance 6 <br />4.2.1 Chemical Concentrations vs. Time 6 <br />4.2.2 Chemical Concentrations vs. Distance 6 <br />5.0 CONCLUSIONS AND RECOMMENDATIONS 6 <br />• <br />I:1Chevron1957751Periodic Monitoriag\Quarterly Progress Reportsl4thQuarter 200114th Quarter -2001 Progress Report.doc <br />