Santa Clara County Municipal Code Part 2 Plans and Reports

Final grading plans and specifications shall be prepared and signed by a registered civil engineer, on sheets 24 inches by 36 inches. The plans shall be in substantial conformance with approved Grading Approval or Grading Abatement plans, and shall include the following, in addition to any requirements for preliminary grading and drainage plans, unless waived by the Grading Official:

(a) A title block. Plans shall be entitled "Grading and Drainage Plan" and state the purpose of the proposed grading and drainage improvements, the name of the party for whom the plan is prepared, and the name of the engineer or firm by whom this plan is prepared.

(b) Accurate contour lines at appropriate intervals showing the configuration of the ground before and after grading relative to a bench mark established on site. Should the grading be located in a FEMA floodplain or floodway, the benchmark shall be tied into the datum associated with the flood maps.

(c) Location, extent and finished surface slopes of all proposed grading and final cut and fill lines.

(d) Specifications, cross-sections, profiles, elevations, dimensions and construction details based on accurate field data.

(e) Construction details for roads, watercourses, culverts, bridges and drainage devices, retaining walls, cribbing, dams, erosion prevention, and sediment control measures and other improvements existing or to be constructed. Where water quantity is a design factor, the plans shall be accompanied by a plat showing the drainage area of land tributary to the site, the run-off computations for the area, and calculations of the carrying capacity of watercourses, in accordance with the County Drainage manual. Where water quality is a design requirement, the plans shall include stormwater quality improvements.

(f) Temporary and permanent erosion prevention and sediment control measures where appropriate for sediment control during the construction period and until such time as this temporary ground cover has become established.

(g) A landscaping plan, when required by the County, and a schedule of permanent slope plantings to replace the temporary ground cover and watering facilities, as needed.

(h) Location of property corner monuments and property lines.

(i) An estimate of the quantity of excavation and fill adjusted for anticipated swell or shrinkage. Show the locations of any borrow sites or locations for disposal of surplus material.

(j) Other information as required.

(Ord. No. NS-1203.120, § 1, 4-9-13; Ord. No. NS-1203.126, § 5, 8-14-18)

All reports, supplemental reports, and data shall be subject to the review and approval of the Grading Official. Recommendations included in the reports and approved by the Grading Official shall be incorporated into the grading plans and specifications.

(Ord. No. NS-1203.120, § 1, 4-9-13)

The Grading Official may request the County Geologist to review the submitted material, in order to provide his/her recommendations and/or comments to the Grading Official.

(Ord. No. NS-1203.120, § 1, 4-9-13)

The Grading Official may require a hydrology and/or hydraulic report based upon the grading and drainage plan. The report shall include calculations showing the increase in runoff from the development and mitigation measures required to detain the increases per the Santa Clara County Drainage manual.

(Ord. No. NS-1203.120, § 1, 4-9-13)

The Grading Official may require a soil engineering investigation and report based on the most recent grading and drainage plan. Such report shall include laboratory tests and data regarding the nature, distribution, and strength of existing soils; conclusions and recommendations for grading procedures; and design criteria for corrective measures to ensure that all soil and geologic conditions have been adequately considered. The report shall be prepared by a registered civil engineer, licensed by the State of California. The Grading Official may require addendums to the soils report to provide supplemental information.

(Ord. No. NS-1203.120, § 1, 4-9-13)

The Grading Official may require an engineering geologic investigation prior to issuing the permit, based on the proposed grading and land use plan(s) and the official County Geologic Hazard Maps. The engineering geologic report, when required, shall include an adequate description of the geology of the site, and conclusions and recommendations regarding the effect of geologic conditions on the proposed grading and land use. The report shall be prepared by a certified engineering geologist licensed by the State of California.

(Ord. No. NS-1203.120, § 1, 4-9-13)