TABLE OF CONTENTS (Continued) 



Page 



Total Dissolved Solids 65 



Drainage Site Classes 66 



Residual Nitrogen in West Side Soils 69 



Background 69 



Ranges and Magnitudes 71 



Variability of Nitrogen from Different Sites ... 72 



Virgin Sites 73 



Irrigated Sites 73 



Alluvial Fan and Interfan Sites 73 



Different Geographical Sites 75 



Nitrogen in Soils and Tile Drainage 75 



Saturation Extracts and Field Extracts 75 



Soil-Moisture Relationships 76 



Field Comparisons 77 



Future Tile Drainage 79 



San Luis Unit Service Area 80 



Residual Nitrogen in Parent Materials of 



West Side Soils 83 



Genesis and Morphology o3 



Nitrogen Concentrations in Parent Materials ... 83 



SECTION VI. REFERENCES 85 



SECTION VII. PUBLICATIONS 89 



FIGURES 



Figure 

 Number 



Major Tiled Areas of the 



San Joaquin Valley 11 



Interceptor System 1^ 



XI 



