12.08.280 Grading plans – Regular grading requirements.
A. All plans and specifications shall be prepared and signed by a civil engineer except that the Planning Department may waive this requirement if the proposed grading does not:
1. Endanger the public health, safety and welfare;
2. Require cuts and fills involving a disturbance of more than 1,000 cubic yards of dirt or more;
3. Include cut or fill slopes in excess of two to one (2:1) horizontal to vertical ratio, or which does not create unstable or erodible slopes under five feet in height;
4. Include a depth of fill in excess of 10 feet, and which is not intended to support structures of any kind;
5. Require a cut or fill that is situated so as to cause unduly increased soil pressure or reduce earth support upon adjacent structure or property;
6. Include the construction of any drainage or sediment control structures, culverts, or facilities or substantial alteration of any existing drainage course;
7. Include the creation or aggravation of an unstable slope condition;
8. Require construction of any retaining wall over four feet in height;
9. Include the construction of a vehicular bridge;
10. Include an access road serving two or more existing or potential residences; or
11. Encroach into the areas designated as Zone A, AO or AE as shown on the Flood Insurance Rate Maps.
B. Regular grading plans may omit stationing and include only “typical” cross-sections for various terrain and features, maximum grades and heights of cut-and-fill slopes, and/or a statement indicating compliance with all of the provisions of subsection (A) of this section.
C. Driveway designs in excess of 150 feet in length which meet the requirements of CalFire’s PRC 4290 guidelines, evidenced by a county-furnished “4290 checklist” completed and signed by an authorized representative of CalFire, and which meet all the requirements of subsection (A) of this section, may also be processed under this section (“regular grading” requirements) with evidence of certification from a California-licensed engineer that the proposed design meets the safe vehicle weight load requirements of CalFire at the time of application.