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0 CONTENTS 0 <br /> ' 1.0 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.0 PURPOSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 3.0 ENVIRONMENTAL SETTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> 3.1 Geology and Stratigraphy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> ' 3.2 Ground Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 3.3 Surface Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br /> 4 <br /> ' 4.0 PROPOSED AQUIFER TESTING PROGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br /> 4.1 Site Development and Construction . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br /> ' 4.2 Select Sites and Drill Soil Borings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br /> 4.3 Analyze Well Logs and Geologic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> 4.4 Design Observation and Extraction Wells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> ' 4.5 Install Single or Nested Observation Wells . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 8 <br /> 4.6 Observation Well Development and Step-Draw-Down Pumping Tests . . . . . . . . . . . . . . 9 <br /> 4.7 Purge Water Storage and Disposal Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 <br /> ' 4.8 Ground Water Sampling and Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 <br /> 4.9 Installation of the Pumping Well . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 <br /> 4.10 Aquifer Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 <br /> ' 4.11 Analyze Water Level Data and Geologic Information . . . . . . . . . . . . . . . . . . . . . . . . . 12 <br /> 4.12 Report of Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 <br /> ' 5.0 REMARKS AND SIGNATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 <br /> 6.0 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 <br /> 1 <br /> ' TABLES <br /> Table 1 List of Test Wells <br /> ' Table 2 Water Level Data. <br /> Table 3 Ground Water Flow Directions <br /> ' FIGURES <br /> ' Figure 1 Regional Location Map <br /> Figure 2 Stockton West, California 7.5 Minute Quadrangle <br /> Figure 3 Stratigraphic Column at MW-7, 1836 North Sutro Avenue, Stockton <br /> Figure 4 Geologic Cross Section <br /> ' Figure 5 Potentiometric Contours on Ground Water(June 20, 2000) <br /> Figure 6 Hydrograph <br /> ' Figure 7 Proposed Aquifer Testing Layout <br /> Figure 8 Extraction and Observation Well Diagrams <br /> 1 <br /> SIERRA-PACIFIC GROUP 11 <br />