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RESEVOIR MAPPING • <br /> - ' PAGE 3 <br /> G. Convert data from tasks above into digital form <br /> for use with the County/Hazen and Sawyer Autc.CAD <br /> System. (Designated as Task G. ) <br /> iltbootest <br /> 7. Develop a sitemem- '- -volume relationship for the <br /> entire reservoir study area or portion thereof to <br /> be described at a later date. (Designated as <br /> Task 7. ) <br /> MAPPING INSTRUCTIONS <br /> 1. All mapping is to be performed in strict <br /> accordance with the National Map Standards. <br /> 2. The following control references shall be used <br /> for aerial photography: - -- • <br /> a. Horizontal control: ' the North Carolina - - <br /> Grid Coordinate System. <br /> b. Vertical control: National Mean Sea Level <br /> datum. <br /> 3. Point elevations accurate to +/-1 foot or better <br /> are to be given on ALL topographic maps for the . <br /> reservoir study area and potential construction <br /> area for the following: <br /> a. ground elevations immediately adjacent to <br /> ALL buildings; <br /> . - <br /> • - . <br />