Part 4 — Plans and Specifications

• A. Each application for a grading permit shall include the following:

  1. A completed application form;

  2. Two complete sets of grading plans or an electronic grading plan submittal in accordance with engineering and surveying division requirements;

  3. Profiles, cross sections, and specifications as required;

  4. A complete drainage report as required by the community development resource agency;

  5. The application fee as determined by the board of supervisors;

  6. Where applicable, evidence of coverage, or application for coverage, under an NPDES general construction permit;

  7. Any information necessary to comply with the Placer County Conservation Program including Article 19.10, Sections 19.10.070 and 19.10.080.

• B. The plans and other documents will be reviewed by the community development resource agency. The applicant and/or project engineer will be notified of any necessary changes to the plans. When the plans and other documents have been approved by the community development resource agency, a grading permit will be issued for the project. All work must be done in strict conformance with the approved plans and documents. The approved plans shall not be changed or altered except in accordance with the provisions of this article.

(Ord. 5056-B, 2000; Ord. 5373-B, 2005; Ord. 5407-B § 12, 2006; Ord. 6042-B § 1, 2020; Ord. 6175-B § 1, 2022)

• A. All projects that discharge fill or excavate 25 cubic yards or more material within the stream system shall obtain a stream system grading permit.

• B. Each application for a stream system grading permit shall include the following:

  1. A completed application form;

  2. Two complete sets of stream system grading plans (or electronic submittal per county requirements);

  3. Profiles, cross sections, and specifications as required;

  4. The application fee as determined by the board of supervisors.

• C. In addition to the requirements of subsection B, all applications for a stream system grading permit must comply with Section 19.10.080. If there are no aquatic resources present, it will only be necessary to provide the information described in Section 19.10.030(A) and

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Placer County, CA

PLACER COUNTY CODE

§ 15.48.305

§ 15.48.320

not the information required by Section 19.10.030(B). (Ord. 6042-B § 1, 2020)

• A. All plans and specifications shall be prepared and signed by a civil engineer except that the community development resource agency 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 combined total of 1,500 cubic yards of dirt or more, or where depth of fill exceeds 10 feet;

  3. Include an access road serving five or more existing or potential residences;

  4. 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;

  5. Include the construction of any drainage or sediment control structures, culverts, or facilities or substantial alteration of any existing drainage course;

  6. Include the creation or aggravation of an unstable slope condition;

  7. Require construction of any retaining wall over four feet in height;

8. Include the construction of a vehicular bridge.

(Ord. 5056-B, 2000; Ord. 5373-B, 2005; Ord. 5407-B, 2006)

Grading plans and specifications shall be prepared and signed by a civil engineer, as provided herein.

• A. The plans shall include the following:

  1. All plans shall be on 24 inch by 36 inch sheets unless otherwise approved, and shall be drawn at a scale no smaller than one inch equals 100 feet, except plans for ponds and private vehicular bridges shall be drawn to a scale of one inch equals 40 feet or larger;

  2. A title block. Plans shall be entitled "grading plan" and state the purpose of the proposed grading and the name of the engineer or firm by whom this plan is prepared, owner's name and address, and site address;

  3. A vicinity sketch (not at map scale) indicating the location of the site relative to the principal roads, lakes and watercourses in the area;

  4. North arrow and scale;

  5. A site plan indicating the extent of the work and any proposed divisions of land;

  6. The complete site boundaries and locations of any easements and rights-of-way traversing or adjacent to the property;

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Placer County, CA

BUILDING AND DEVELOPMENT

§ 15.48.320

§ 15.48.320

7. The location of all existing or proposed roads, buildings, wells, pipelines, watercourses, aquatic resources, stream system boundaries, septic systems or areas reserved for on-site sewage disposal, and any other structures, facilities, and features of the site, as well as the location of all improvements on lots within 50 feet of the proposed work;

8. Location and nature of known or suspected soil or geologic hazard areas, including but not limited to serpentine rock areas, landslides, etc.;

9. Accurate contour lines of the existing terrain and proposed finished grade at intervals not greater than five feet, or spot elevations 25 feet on center showing all topographic features and drainage patterns throughout the area where the proposed grading is to occur relative to a bench mark established on site. The contour lines/spot elevations shall be extended to a minimum of 50 feet beyond the affected area, and further, if needed, to define intercepted drainage, and shall be extended a minimum of 100 feet outside of any future road right-of-way;

10. Approximate location of cut and fill lines extent and finished slopes of all proposed grading and the limits of grading for all proposed grading work, including borrow and stockpile areas;

11. Location, width, direction of flow and approximate location of any watercourses including tops and toes of banks;

12. Approximate boundaries of any areas with histories of flooding;

13. Cross sections, profiles, elevations, dimensions, and construction details based on accurate field data as may be required after initial review of plans;

14. Construction details for roads, artificial watercourses, culverts, bridges and drainage devices, retaining walls, cribbing, dams, and other improvements existing or to be constructed, together with supporting calculations and maps as may be required after initial review of plans;

15. Proposed provisions for storm drainage control and any existing or proposed flood control facilities or septic tank disposal fields or areas reserved for on-site sewage disposal near the grading;

16. A detailed erosion and sediment control plan including specific locations, construction details, and supporting calculations for temporary and permanent sediment control structures and facilities;

17. A revegetation plan, including temporary erosion control plantings, permanent slope plantings, replacement of temporary groundcover, and irrigation facilities.

• B. Additional supporting information which may be required includes, but is not necessarily limited to:

  1. An estimate of the quantities of excavation and fill;

  2. The location of any borrow site or location for disposal of surplus material;

  3. A projected schedule of operations, including, as a minimum, the dates of:

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Placer County, CA § 15.48.320

PLACER COUNTY CODE

• b. Start and finish of rough grading,

  - c. Completion of drainage facilities, 
  
  - d. Completion of work in any watercourse, stream system or aquatic resource, 
  
  - e. Completion of erosion and sediment control facilities, 
  
  - f. Completion of hydromulching and other landscaping. If rough grading is proposed between October 15th and May 1st, a more detailed schedule of grading activities and use of erosion and sediment control facilities may be required; 
  

  4. Itemized cost estimate of the proposed grading and related work;

  5. A complete drainage study in conformance with the Placer County flood control and water conservation district's stormwater management manual (latest edition);

  6. Geotechnical investigation report and recommendations addressing the proposed work.

• (Ord. 5056-B, 2000; Ord. 6042-B § 1, 2020; Ord. 6175-B § 1, 2022)

One set of approved plans and specifications shall be retained by the community development resource agency.

(Ord. 5056-B, 2000; Ord. 5373-B, 2005; Ord. 5407-B, 2006; Ord. 6175-B § 1, 2022)

• A. Proposed modifications of an approved final plan shall be submitted to the community development resource agency for written approval.

• B. All necessary soils and geological information and design details shall accompany any proposed modification.

• C. The modification shall be compatible with any subdivision map or land use requirements. (Ord. 5056-B, 2000; Ord. 5373-B, 2005; Ord. 5407-B, 2006)

Implementation of erosion and sediment control plans shall be based on the season of the year and the stage of construction at forecasted periods of rainfall and heavy storms. Erosion and sediment control plans shall allow for possible changes in construction scheduling, unanticipated field conditions, and relatively minor changes in grading. Modifications to plans may be required after initial plan approval.

(Ord. 5056-B, 2000)

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Placer County, CA