A. An accurate and complete survey shall be made of the land to be subdivided unless acceptable record data is used. With the final map, the subdivider shall file a traverse sheet or sheets, in a form approved by the Department of Public Works, giving latitudes, departures and coordinates of the boundary of the subdivision and blocks therein. Traverse of the boundaries of the tract, and of all lots and blocks, must close within a limit of error of one part in 10,000. If any shortage or excess is found on the ground between monuments, compared with the original record, any division of the total must bear its proportion of such excess or shortage. The traverse sheet shall be transmitted to the Department of Public Works, which shall approve it before the final map may be approved by the Planning Commission.

B. In making the survey on which the final map is based, the engineer or surveyor shall set permanent monuments at all angle and curve points on the exterior boundaries of the subdivision, and shall set two permanent monuments within sight of each other in each block.

C. Permanent monuments shall be no less substantial than one-and-three-quarter-inch-by-30-inch iron pipe, set to be visible from the surface of the surrounding ground, with the centerpoint marked by a copper tack or pin.

D. Galvanized pipe, no less substantial than one-half inch by 30 inches, set in the ground as prescribed for permanent monuments, shall be placed at the beginning and end of all curves and at all single points.

E. Monuments no less substantial than steel pins, one-half inch in diameter by 18 inches long, and set in the ground as prescribed for permanent monuments, shall be set at all corners.

F. Standard monuments, as shown in the adopted “Standards and Specifications” of the county, shall be placed along the centerline of streets and alleys at all intersections, and at the beginning and ending of curves, unless waived by the Department of Public Works because of geological or topographical conditions.

G. All monuments shall be tagged or plugged with the license number of the engineer or surveyor responsible for their installation.

H. All monuments shall be subject to inspection and approval by the Department of Public Works before it approves the final map.

I. Provided that a cash deposit or approved bond, in an amount set by the Department of Public Works, is filed by the subdivider to guarantee such work, monuments may be set after the approval of the final map, but not later than the time of acceptance of the subdivision improvements by the Board of Supervisors. (Formerly 23.19.001)