16.15.052 Site map and grading plan.
A site map and grading plan shall be required for all applications for the construction of new residences, subdivisions, or the construction of any structure or addition to a structure exceeding one thousand square feet in area, or on slopes exceeding forty percent or in any area identified in the general plan of the City as being subject to soil or slope instability. Said map and plan shall be prepared by any professional licensed to prepare surveys, and shall be based upon an accurate topographic survey. The site map and grading plan shall contain all of the following information
A. Existing and proposed topography of the site taken at a contour interval sufficiently detailed to define the topography and the drainage pattern over the entire site. Ninety percent of the contours shall be plotted within one contour interval of the true location;
B. Two contour intervals that extend a minimum of one hundred feet off-site (or sufficient to show on- and off-site drainage);
C. Location and graphic representation of all existing and proposed natural and man-made drainage facilities, trees (showing size and species), structures and paved areas, and utilities;
D. Detailed plans of all surface and subsurface drainage devices, walls, cribbing, dikes, and other protective devices to be constructed with, or as part of the proposed work, together with a map showing the drainage area and the estimated runoff of the area served by any drain;
E. Location and graphic representation of proposed excavations and fills, on-site storage of soil and other earthen material, and on-site disposal;
F. Location of proposed temporary and final surface runoff, erosion and sediment control measures;
G. Quantity of soil and earthen materials in cubic yards to be excavated, filled, stored or otherwise utilized on site;
H. Proposed sequence and schedule of excavation, filling and other land-disturbing and filling activities, and soils or earthen material storage and disposal. (Ord. 89-1 § 2, 1989.)