There is established a bench mark in the city which shall be the official reference for elevations and grade lines.

    The bench mark is located at the Municipal Building at the junction of Cherry Street and Rapp Avenue, being thirty (30) feet southeast of the corner of the building; thirty-six (36) feet north and twenty-four (24) feet west of the center line of the streets; also seven and three-tenths (7.3) feet north of the north edge of sidewalk and five and two-tenths (5.2) feet west of the west edge of sidewalk.

    The bench mark is a standard United States Geological Survey Tablet set in a concrete post, and stamped "1 SAN 1963 515."

    The elevation of the bench mark is 514.989 feet above mean sea level. (Prior code § 2-4-2)