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Department of <br /> Water Resources <br /> Bulletin 74-81 <br /> THE COVER <br /> The photographs on the cover show modern water well Water Well <br /> construction activities, materials, and equipment. Starting Standards: <br /> at the upper left corner and proceeding clockwise, they <br /> are: State of California <br /> 1 . Joining sections of thermoplastic well casing. <br /> 2. Air rotary construction with foam. <br /> 3. Welding sections of wire wound well screen. <br /> 4. Installing steel well casing in deep well. <br /> 5. Portion of borehole ("electric") log. <br /> 6. Downhole photography—view of encrustations. December 1981 <br /> 7. Plastic casing—thermoset material. <br /> 8. Joining well screen to blank steel casing. <br /> 9. Center—fully developed well (note absence of sand). <br /> Huey D. Johnson Edmund G. Brown Jr. Ronald B. Robie <br /> Secretary for Resources Governor Director <br /> The Resources State of Department of <br /> Agency California Water Resources <br />