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i <br /> r <br /> CONTENTS <br /> z INTRODUCTION <br /> BACKGROUND . . 2 <br /> Previous Work Conducted by Pacific Environmental Group 3 <br /> Previous Work Conducted by Applied GeoSystems <br /> i August 1981 . . . . . . . . . . . . . . 6 <br /> August 1988 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br /> 9 <br /> - GEOLOGY AND HYDROGEOLOGY ` <br /> 12 <br /> PROXIMITY TO WELLS . . <br /> . . . . . . . 13 <br /> FIELD WORK AND METHODS . . . . . . . . . . . . . . . . . . . . <br /> Safety Plan 15 <br /> Drilling, Collecting, and Sampling Procedures for Soil . 16 <br /> P g Samples . . . . . . . . . . 16 <br /> Ground Water Monitoring Wells . . . • • , , , , • , • 14 <br /> Well Construction . 19 <br /> Well Development . . . . . . . . . <br /> Ground-Water Sampling . . . . . . . . . . . . . . . . . 20 <br /> d Ground-Water Well Survey . . . . . . . . . . . . 20 <br /> . . . . , <br /> 23 <br /> LABORATORY RESULTS <br /> i Soil . . 24 <br />' t Water . . . . . . . . . . . . . . . . . . . . . <br /> . . : . . . . . . . . . . . . . . . 24 <br /> 25 <br /> x SOIL STRATIGRAPHY . . . . <br /> . . . :. . . : . . . : . . . . . . : . . . 27 <br /> HYDROGEOLOGY . . . <br /> f <br /> Ground-Water <br /> Gradient . . . . . . . . . . . 304 <br /> Groun <br /> Evaluation of Aquifer Parameters . . . . . . _ 32 <br /> Limits of Cortaminatiori <br /> . . . . . . <br /> x` CONCLUSIONS - 3a" <br /> . . 37 <br /> f *..IMITATIONS � <br /> 38 <br /> f .. REFERENCES CITED 39 <br /> y' <br /> z i j <br /> r , <br /> --i+§v �w P WSy.�� 4.w�'i•s.+t .e.ly .:�.!„ F - ,... 4 .. <br /> a <br /> F <br />