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' i Quarterly Report - Fourth Quarter 2004 <br /> SIERRA LUMBER <br />' 375 West Hazelton Avenue, Stockton, California <br /> TABLE OF CONTENTS <br /> SECTION PAGE <br />' 1.0. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br />' 2.0. GROUND WATER MONITORING AND SAMPLING PROCEDURES . . . . . . . . . 2 <br /> 2 1 WELL MONITORING AND EVACUATION 2 <br />' <br /> 22 GROUND WATER SAMPLING 2 <br /> 23 LABORATORY ANALYSIS OF GROUND WATER SAMPLES 3 <br /> 3.0. SOIL VAPOR EXTRACTION/IN-SITU AIR SPARGE PROCEDURES . . . . . . . . 3 <br /> 3 1 SOIL VAPOR EXTRACTION SYSTEM PROCEDURES 3 <br /> 3 2 IN-SITU AIR SPARGE SYSTEM PROCEDURES 4 <br />' 3 3 COLLECTION AND ANALYSIS OF VAPOR EXTRACTION <br /> AIR FLOW SAMPLES 4 <br />' • 4.0. FINDINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br /> 41 GROUND WATER ELEVATION AND GRADIENT 5 <br /> 42 LABORATORY RESULTS OF GROUND WATER SAMPLES 5 <br />' <br /> 43 RESULTS OF VAPOR EXTRACTION 6 <br /> 44 ANALYTICAL RESULTS OF SOIL-GAS VAPOR SAMPLES 6 <br /> 45 MASS CALCULATION OF RECOVERED PRODUCT 6 <br /> 5.0. DISCUSSION AND CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> 6.0. RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 <br />' 7.0. LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 <br />' FIGURES <br /> Figure I - Location Map <br />' Figure 2 - Site Plan <br /> Figure 3 - Ground Water Elevation Contour Map December 2004 <br /> Figure 4 -Approximate Extent of Dissolved TPH-g December 2004 <br /> • <br />' Advanced GeoEnvironmental,Inc <br /> I <br />