A. A durable monument shall be set at each angle and curve point in the boundary of each lot. Such durable monuments shall be not less substantial than a two inch by two inch by twelve inch (2" x 2" x 12") redwood stake with nail and metal tag with the certificate number of the registered civil engineer or licensed surveyor setting it, each number to be preceded by the letters, "R.E." or "L.E.", respectively, as the case may be; provided, however, that whenever a point marking any of the locations abovedescribed occurs in improved areas, such as a concrete sidewalk, curb, wall or pavement, such points shall be marked with a lead plug, tack and such metal tag or with a spike and metal tag securely set in the concrete or pavement, respectively.
B. All monuments shall be subject to inspection and approval by the City Engineer. (1954 Code §20.35)