J101.1 Scope. The provisions of this Chapter apply to grading, excavation, and earthwork construction, including fills and embankments and the control of storm water runoff from graded sites, including erosion sediments and construction-related pollutants.
The purpose of this chapter is to safeguard life, limb, property, and the public welfare by regulating grading on private property. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007)

J101.2 Flood hazard areas. The provisions of this Chapter shall not apply to grading, excavation, and earthwork construction, including fills and embankments, in floodways designated in Chapter 11.60 of Title 11 of the Los Angeles County Code or in floodways within flood hazard areas established in Section 1612.3 or in flood hazard areas where design flood elevations are specified but floodways have not been designated, unless it has been demonstrated through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that the proposed work will not result in any increase in the level of the base flood. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J101.3 General hazards. Whenever the Building Official determines that any existing excavation, embankment, or fill on private property has become a hazard to life and limb, or endangers property, or adversely affects the safety, use, or stability of a public way or drainage channel, the Building Official may give written notice thereof to the owner of the property upon which the excavation, embankment, or fill is located, or other person or agent in control of said property. Upon receipt of said notice, the owner or other person or agent in control of the property shall repair or eliminate such excavation, embankment, or fill so as to eliminate the hazard, in conformance with the requirements of this Code, within the period specified in said notice. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J101.4 Safety precautions. If at any stage of the work the Building Official determines by inspection that further grading as authorized is likely to endanger any public or private property or result in the deposition of debris on any public way or interfere with any existing drainage course, the Building Official may order the work stopped by notice in writing served on any persons engaged in doing or causing such work to be done, and any such person shall immediately stop such work. The Building Official may authorize the work to proceed if the Building Official finds adequate safety precautions can be taken or corrective measures incorporated in the work to avoid likelihood of such danger, deposition, or interference.
If the grading work as done has created or resulted in a hazardous condition, the Building Official shall give written notice requiring correction thereof as specified in section J101 of this Code. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J101.5 Protection of utilities. Both the permittee and the owner of the property on which the grading is performed shall be responsible for the prevention of damage to any public utilities or services. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J101.6 Protection of adjacent property. Both the permittee and owner of the property on which the grading is performed shall be responsible for the prevention of damage to adjacent property. No person shall excavate on land sufficiently close to the property line to endanger any adjoining public street, sidewalk, alley, or other public or private property without taking adequate measures to support and protect such property from settling, cracking, or other damage that might result from the proposed work. Any person performing any grading that involves imported or exported materials shall take special precautions, as approved by the Building Official, to prevent such materials from being deposited on adjacent properties, any public way and/or any drainage course. (Ord. 2010-0053 § 95, 2010; (Ord. 2007-0108 § 33 (part), 2007.)

J101.7 Storm water control measures. The permittee and the owner of the property on which the grading is performed shall put into effect and maintain all precautionary measures necessary to protect adjacent water courses and public or private property from damage by erosion, flooding, and deposition of mud, debris, and construction-related pollutants originating from the site during grading and related construction activities. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J101.8 Maintenance of protective devices and rodent control. All drainage structures and other protective devices and all burrowing rodent control measures, as shown on the grading plans approved by the Building Official, shall be maintained in a good condition and, when necessary, promptly repaired by the permittee or the owner of the property on which grading has been performed or by any other person or agent in control of such property. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J101.9 Correlation with other sections. The provisions of this Chapter are independent of the provisions of Chapter 99 of this Code relating to building and property rehabilitation. This Section may be applied even though the same facts have been used to determine that there is substandard property subject to the provisions of Chapter 99. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J101.10 Conditions of approval. In granting any permit under this code, the Building Official may include such conditions as may be reasonably necessary to prevent creation of a nuisance or hazard to public or private property. Such conditions may include, but shall not be limited to:
1. Improvement of any existing grading to comply with the standards of this Code.
2. Requirements for fencing of excavations or fills which would otherwise be hazardous. (Ord. 2010-0053 § 95, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J102.1 Definitions. For the purposes of this Appendix Chapter, the terms, phrases, and words listed in this Section and their derivatives shall have the indicated meanings.

APPROVAL. When the proposed work or completed work conforms to this Chapter, as determined by and to the satisfaction of the Building Official.

AS-BUILT. See Section J105.12.

BEDROCK. The relatively solid, undisturbed rock in place either at the ground surface or beneath superficial deposits of alluvium, colluvium and/or soil.

BENCH. A relatively level step excavated into earth material on which fill is to be placed.

BEST MANAGEMENT PRACTICE (BMP). Practices, prohibitions of practices, or other activities to reduce or eliminate the discharge of pollutants to surface waters. BMPs include structural and nonstructural controls, management practices, operation and maintenance procedures, and system, design, and engineering methods.

BORROW. Earth material acquired from an off-site location for use in grading on a site.

CIVIL ENGINEER. A professional engineer registered in the State of California to practice in the field of civil works.

CIVIL ENGINEERING. The application of the knowledge of the forces of nature, principles of mechanics, and the properties of materials to the evaluation, design, and construction of civil works.

COMPACTION. The densification of a fill by mechanical means.

CUT. See Excavation.

DESILTING BASINS. Physical structures, constructed for the removal of sediments from surface water runoff.

DESIGN ENGINEER. The Civil Engineer responsible for the preparation of the grading plans for the site grading work.

DOWN DRAIN. A device for collecting water from a swale or ditch located on or above a slope, and safely delivering it to an approved drainage facility.

EARTH MATERIAL. Any rock, natural soil, or fill or any combination thereof.

ENGINEERING GEOLOGIST. A geologist experienced and knowledgeable in engineering geology shall mean a person holding a valid certificate of registration as a geologist in the specialty of engineering geology issued by the State of California under the applicable provisions of the Geologist and Geophysicist Act of the Business and Professions Code.

ENGINEERING GEOLOGY. The application of geologic knowledge and principles in the investigation and evaluation of naturally occurring rock and soil for use in the design of civil works.

EROSION. The wearing away of the ground surface as a result of the movement of wind, water, or ice.

EXCAVATION. The removal of earth material by artificial means, also referred to as a cut.

FIELD ENGINEER. The Civil Engineer responsible for performing the functions as set forth in Section J105.3.

FILL. Deposition of earth materials by artificial means.

GEOTECHNICAL ENGINEER. See Soils Engineer.

GEOTECHNICAL HAZARD. An adverse condition due to landslide, settlement, and/or slippage. These hazards include, but are not limited to, loose debris, slopewash, and mud flows from natural or graded slopes.

GRADE. The vertical location of the ground surface.

GRADE, EXISTING. The grade prior to grading.

GRADE, FINAL. See Section J105.7.

GRADE, FINISHED. The grade of the site at the conclusion of all grading efforts.

GRADE, INITIAL. See Section J105.7.

GRADE, ROUGH. See Section J105.7.

GRADING. An excavation or fill or combination thereof.

KEY. A compacted fill placed in a trench excavated in earth material generally constructed at the toe of a slope.

LANDSCAPE ARCHITECT. A person who holds a certificate to practice landscape architecture in the State of California under the applicable landscape architecture provisions of Division 3, Chapter 3.5 of the Business and Professions Code.

LINE. The horizontal location of the ground surface.

PERMITTEE. See Section J105.6.

PRIVATE SEWAGE DISPOSAL SYSTEM. A septic tank with effluent discharging into a subsurface disposal field, into one or more seepage pits or into a combination of subsurface disposal field and seepage pit or of such other facilities as may be permitted in accordance with the procedures and requirements set forth in Title 28 of the Los Angeles County Code.

PROJECT CONSULTANTS. The professional consultants required by this Code which may consist of the design engineer, Field Engineer, Geotechnical Engineer, Engineering Geologist, and landscape architect as applicable to this Chapter.

PROFESSIONAL INSPECTION. The inspection required by this Code to be performed by the Project Consultants. Such inspections shall be sufficient to form an opinion relating to the conduct of the work.

SITE. A lot or parcel of land or contiguous combination thereof, under the same ownership, where grading is performed or permitted.

SLOPE. An inclined ground surface the inclination of which is expressed as a ratio of horizontal distance to vertical distance.

SOIL. Naturally occurring superficial deposits overlying parent bedrock.

SOILS ENGINEER (GEOTECHNICAL ENGINEER). A civil engineer experienced and knowledgeable in the practice of soils engineering.

SOILS ENGINEERING (GEOTECHNICAL ENGINEERING). The application of the principals of soils mechanics in the investigation, evaluation, and design of civil works involving the use of earth materials and the inspection or testing of construction thereof.

STORM DRAIN SYSTEM. A conveyance or system of conveyances, including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, and man-made channels, designed or used for collecting and conveying storm water.

STORM WATER POLLUTION PREVENTION PLAN. A site drawing with details, notes, and related documents that identify the measures proposed by the permittee to: (1) control erosion and prevent sediment and construction-related pollutants from being carried offsite by storm water, and (2) prevent non-storm water discharges from entering the storm drain system.

SURFACE DRAINAGE. Flows over the ground surface.

SOIL TESTING AGENCY. An agency regularly engaged in the testing of soils and rock under the direction of a Civil Engineer experienced in soil testing.

TERRACE. A relatively level step constructed in the face of a graded slope for drainage and maintenance purposes. (Ord. 2010-0053 § 96, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.1 Permits required. Except as exempted in Section J103.2, no grading shall be performed without first having obtained a permit from the Building Official. A grading permit does not include the construction of retaining walls or other structures. A separate permit shall be obtained for each site and may cover both excavations and fills. Any Engineered Grading as described in Section J104 shall be performed by a contractor licensed by the State of California to perform the work described hereon. Regular Grading less than 5,000 cubic yards may require a licensed contractor if the Building Official determines that special conditions or hazards exist. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.2 Exemptions. A grading permit shall not be required for the following:
1. When approved by the Building Official, grading in an isolated, self-contained area, provided there is no danger to the public, and that such grading will not adversely affect adjoining properties.
. . .
7. Exploratory excavations performed under the direction of a Geotechnical Engineer or Engineering Geologist. This shall not exempt grading of access roads or pads created for exploratory excavations. Exploratory excavations must not create a hazardous condition to adjacent properties or the public in accordance with Section J101.3. Exploratory excavations must be restored to existing conditions, unless otherwise approved by the Building Official.
8. An excavation that does not exceed 50 cubic yards (38.3 m3) and complies with one of the following conditions:
(a) Is less than 2 feet (610 mm) in depth.
(b) Does not create a cut slope greater than 5 feet (1524 mm) measured vertically upward from the cut surface to the surface of the natural grade and is not steeper than 2 units horizontal to 1 unit vertical (50 percent slope).
9. A fill not intended to support a structure that does not obstruct a drainage course and complies with one of the following conditions:
(a) Is less than 1 foot (0.3 m) in depth and is placed on natural terrain with a slope flatter than 5 units horizontal to 1 unit vertical (20 percent slope).
(b) Is less than 3 feet (915 mm) in depth at its deepest point measured vertically upward from natural grade to the surface of the fill, does not exceed 50 cubic yards, and creates a fill slope no steeper than 2 units horizontal to 1 unit vertical (50 percent slope).
(c) Is less than 5 feet (1524 mm) in depth at its deepest point measured vertically upward from natural grade to the surface of the fill, does not exceed 20 cubic yards, and creates a fill slope no steeper than 2 units horizontal to 1 unit vertical (50 percent slope).

Exemption from the permit requirements of this Appendix shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this Code or any other laws or ordinances of this jurisdiction.

(Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.3 Unpermitted grading. A person shall not own, use, occupy, or maintain any site containing unpermitted grading. For the purposes of this Code, unpermitted grading shall be defined as either of the following: (1) Grading that was performed, at any point in time, without the required permit(s) having first been obtained from the Building Official, pursuant to Section J103.1; or (2) Grading for which a permit was obtained pursuant to this Section, but which was not completed, pursuant to Section J105, prior to the expiration of the permit, pursuant to Section 106.5.4. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.4 Availability of permit at site. No person shall perform any grading that requires a permit under this Chapter unless a copy of the grading permit and approved grading plans are in the possession of a responsible person and available at the site for the Building Official’s reference. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.5 Grading fees. Fees shall be assessed in accordance with the provisions of this Section. The amount of the fees shall be as specified in Section 107 of this Code.
1. Plan Review Fees. When a plan or other data are required to be submitted, a plan review fee shall be paid at the time of submitting plans and specifications for review. Separate plan review fees shall apply to retaining walls or major drainage structures as required elsewhere in this Code. For excavation and fill on the same site, the fee shall be based on the volume of excavation or fill, whichever is greater.
2. Permit Fees. A fee for each grading permit shall be paid to the Building Official at the time of issuance of the permit. Separate permits and fees shall apply to retaining walls or major drainage structures as required elsewhere in this Code.
3. Site Inspection Fee. When the Building Official finds that a visual inspection of the site is necessary to establish drainage requirements for the protection of property, existing buildings, or the proposed construction, a site inspection shall be made during plan check of grading plans. A fee for such inspection shall be paid to the Building Official at the time of submitting plans and specifications for review. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.6 Compliance with zoning code. The Building Official may refuse to issue a grading permit for work on a site if either the proposed grading or the proposed land use for the site shown on the grading plan application does not comply with the provisions of Title 22, entitled Planning and Zoning, of the Los Angeles County Code. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.7.1 Scope and Purpose. The Building Official may require a permittee or the owner(s) of the property on which the grading is proposed to occur to provide security, as a condition of the issuance of a grading permit for any grading involving more than 1,000 cubic yards (764.6 m3). Where unusual conditions or special hazards exist, the Building Official may require security for grading involving less than 1,000 cubic yards (764.6 m3). The purpose of the security shall be to guarantee the permittee’s obligation to mitigate any hazardous conditions, including flood and geotechnical hazards, that may be created if the grading is not completed in accordance with the approved plans and specifications, and to complete any work that the Building Official determines is necessary to bring the property into compliance with this Chapter.
Security required by this Section may include incidental off-site grading on property contiguous with the site to be developed, provided written consent of the owner of such contiguous property is filed with the Building Official.
The Building Official may waive the requirements for a security for the following:
1. Grading being done by or for a governmental agency.
2. Grading necessary to remove a geotechnical hazard, where such work is covered by an agreement and security posted pursuant to the provisions of Title 21, entitled Subdivision Ordinance, of the Los Angeles County Code.
3. Grading on a site, not exceeding a slope of three horizontal to one vertical, provided such grading as determined by the Building Official will not affect drainage from or to adjacent properties.
4. Filling of holes or depressions, provided such grading will not affect the drainage from or to adjacent properties. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.7.2 Form of security. The security referred to in Section J103.7.1 shall be in one of the following forms:
1. A bond furnished by a corporate surety authorized to do business in this state.
2. Cash.
3. Savings and loan certificates or shares deposited and assigned to the County as provided in Chapter 4.36 of Title 4 of the Los Angeles County Code.
4. An instrument of credit from a financial institution subject to regulation by the state or federal government and pledging that funds in the amount required by the Building Official are on deposit and guaranteed for payment, or a letter of credit issued by such a financial institution. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.7.3 Amount of security. The amount of security shall be based on the number of cubic yards of material in either excavation or fill, whichever is greater, and the cost of all drainage or other protective devices or work necessary to eliminate potential geotechnical hazards. That portion of the security valuation based on the volume of material in either excavation or fill shall be computed as follows:
100,000 cubic yards or less--50 percent of the estimated cost of grading work.
Over 100,000 cubic yards--50 percent of the cost of the first 100,000 cubic yards plus 25 percent of the estimated cost of that portion in excess of 100,000 cubic yards.
When the rough grading has been completed in conformance with the requirements of this Code, the Building Official may, at his or her discretion, consent to a proportionate reduction of the security to an amount estimated to be adequate to ensure completion of the grading work, site development or planting remaining to be performed. The costs referred to in this section shall be as estimated by the Building Official. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.7.4 Conditions. All security shall include the conditions that the principal shall:
1. Comply with all of the provisions of this Code, applicable laws, and ordinances;
2. Comply with all of the terms and conditions of the grading permit;
3. Complete all of the work authorized by the permit. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.7.5 Term of Security. The term of each security shall begin upon the filing with the Building Official and the security shall remain in effect until the work authorized by the grading permit is completed and approved by the Building Official.
(Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.7.6 Default Procedures. In the event that a permittee fails to comply with any provision of this Code or any grading for which a permit has been issued is not completed in accordance with the approved plans and specifications for said work or with all terms and conditions of the grading permit, the Building Official may declare that a default has occurred. The Building Official shall give notice thereof to the principal and surety or financial institution executing the security, or to the owner in the case of a cash bond or assignment.
The Building Official may thereafter determine the work that is necessary to mitigate any hazardous or unsafe conditions on the site and cause such work to be performed.
Where the security consists of a bond or instrument of credit, the surety, or financial institution executing the security shall be responsible for the payment of all costs and expenses incurred by the Building Official in causing such work to be performed, up to the full amount of the security. In the case of cash security or assignment, the Building Official may pay all costs and expenses incurred in causing such work to be performed from the funds deposited, and return any unused portion of such deposit or funds to the person making said deposit or assignment. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J103.7.7 Right of entry. The Building Official or the authorized representative of any surety company or financial institution furnishing a security shall have access to the premises described in the permit for the purpose of inspecting the work.
In the event of default, as described in Section J103.7.6, the surety or financial institution furnishing the security or the Building Official, or any person employed or engaged on the behalf of any of these parties, shall have the right to go upon the premises to perform the mitigation work, as described in Section J103.7.6.
Neither the permittee, owner, or any other person shall interfere with or obstruct the ingress into or egress from any such premises, of any authorized representative of the surety or financial institution executing the security or the Building Official engaged to perform the mitigation work, as described in Section J103.7.6. (Ord. 2010-0053 § 97, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J104.1 Submittal requirements. In addition to the provisions of Section 106, the applicant shall state the following:
1. The estimated quantities of excavation and fill.
2. The proposed land use for the site on which the grading is to be performed. (Ord. 2010-0053 § 98, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J104.2 Site plan requirements. In addition to the provisions of Section 106, a grading plan shall show the existing grade and finished grade in contour intervals of sufficient clarity to indicate the nature and extent of the work and show in detail that it complies with the requirements of this Code. The plans shall show the existing grade on adjoining properties in sufficient detail to identify how grade changes will conform to the requirements of this Code. (Ord. 2010-0053 § 98, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J104.2.1 Grading designation. Grading in excess of 5,000 cubic yards (3,825 m3) or that is proposed to support any structure shall be designated as “engineered grading.” All engineered grading shall be performed in accordance with an approved grading plan and specifications prepared by a Civil Engineer, unless otherwise required by the Building Official.
Grading involving less than 5,000 cubic yards (3,825 m3) and that will not support any structure shall be designated “regular grading” unless the permittee chooses to have the grading be designated as engineered grading, or the Building Official determines that, due to the existence of special conditions or unusual hazards, the grading should be designated as engineered grading. (Ord. 2010-0053 § 98, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J104.2.2 Regular grading requirements. In addition to the provisions of Section 106, and Section J104.2, an application for a regular grading permit shall be accompanied by two sets of plans in sufficient clarity to indicate the nature and extent of the work. The plans shall give the location of the work, the name of the owner, and the name of the person who prepared the plan. The plan shall include the following information:
1. General vicinity of the proposed site.
2. Limits and depths of cut and fill.
3. Location of any buildings or structures where work is to be performed, and the location of any buildings or structures within 15 feet (4572 mm) of the proposed grading.
4. Contours, flow areas, elevations, or slopes which define existing and proposed drainage patterns.
5. Storm water provisions in accordance with the requirements of Section 106.4.3 of this Code. See Section J111 for specific requirements.
6. Location of existing and proposed utilities, drainage facilities, and recorded public and private easements and restricted use areas.
7. Location of all recorded floodways as established by Chapter 11.60 of Title 11 of the Los Angeles County Code.
8. Location of all Special Flood Hazard Areas as designated and defined in Title 44, Code of Federal Regulations. (Ord. 2010-0053 § 98, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J104.2.3 Engineered grading requirements. In addition to the provisions of Section 106 and Section J104.2, an application for a permit for engineered grading shall be accompanied by four sets of plans and specifications, and supporting data consisting of a soils engineering report and engineering geology report.
Specifications shall contain information covering construction and material requirements. Plans shall be drawn to scale upon substantial paper or cloth and shall be of sufficient clarity to indicate the nature and extent of the work proposed and shall show in detail that the proposed work will conform to the provisions of this Code and all relevant laws, ordinances, rules, and regulations. The first sheet of each set of plans shall depict the location of the proposed work, the name and address of the owner, and the person by whom they were prepared.
The plans shall include or be accompanied by the following information:
1. General vicinity of the proposed site.
2. Property limits and accurate contours of existing ground and details of terrain and area drainage.
3. Limiting dimensions, elevations, or finish contours to be achieved by the grading, proposed drainage channels, and related construction.
4. Detailed plans of all surface and subsurface drainage devices, walls, cribbing, dams, and other protective devices to be constructed with, or as a part of, the proposed work. A map showing the drainage area and the estimated runoff of the area served by any drains shall also be provided.
5. Location of any existing or proposed buildings or structures located on the property on which the work is to be performed and the location of any buildings or structures on adjacent properties that are within 15 feet (4572 mm) of the property or that may be affected by the proposed grading operations.
6. Recommendations in the geotechnical report and the engineering geology report shall be incorporated into the grading plans or specifications. When approved by the Building Official, specific recommendations contained in the soils engineering report and the engineering geology report, that are applicable to grading, may be included by reference.
7. The dates of the geotechnical and engineering geology reports together with the names, addresses, and phone numbers of the firms or individuals who prepared the reports.
8. A statement of the quantities of material to be excavated and/or filled. Earth work quantities shall include quantities for geotechnical and geological remediation. In addition, a statement of the quantities of material to be imported or exported from the site.
9. A statement of the estimated starting and completion dates for proposed work.
10. A statement signed by the owner, acknowledging that a Field Engineer, Geotechnical Engineer, and Engineering Geologist, when appropriate, will be employed to perform the services required by this Code, when the Building Official requires that such professional persons be so employed. These acknowledgments shall be on a form furnished by the Building Official.
11. Storm water provisions are required to be shown on the grading plan in accordance with the requirement of Section 106.4.3 of the Code. See Section J111 for specific requirements.
12. A drainage plan for those portions of property proposed to be utilized as a building site (building pad), including elevations of floors with respect to finish site grade and locations of proposed stoops, slabs, and fences that may affect drainage.
13. Location and type of any proposed private sewage disposal system, including the location of the expansion area.
14. Location of existing and proposed utilities, drainage facilities, and recorded public and private easements and restricted use areas.
15. Location of all recorded floodways as established by Chapter 11.60 of Title 11 of the Los Angeles County Code.
16. Location of all Special Flood Hazard Areas as designated and defined in Title 44, Code of Federal Regulations. (Ord. 2010-0053 § 98, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J104.3 Geotechnical and engineering geology reports. The geotechnical report required by Section J104.2.3 shall include data regarding the nature, distribution, and strength of existing soils, conclusions, and recommendations for grading procedures and design criteria for corrective measures, including buttress fills, when necessary, and an opinion on the adequacy for the intended use of sites to be developed by the proposed grading as affected by soils engineering factors, including the stability of slopes. All reports shall conform with the requirements of Section 111 and shall be subject to review by the Building Official. Supplemental reports and data may be required as the Building Official may deem necessary. Recommendations included in the reports and approved by the Building Official shall be incorporated in the grading plan or specifications.
The engineering geology report required by Section J104.2.3 shall include an adequate description of the geology of the site, conclusions, and recommendations regarding the effect of geologic conditions on the proposed development, and an opinion on the adequacy for the intended use of sites to be developed by the proposed grading, as affected by geologic factors. The engineering geology report shall include a geologic map and cross sections utilizing the most recent grading plan as a base. All reports shall conform with the requirements of Section 111 and shall be subject to review by the Building Official. Supplemental reports and data may be required as the Building Official may deem necessary. Recommendations included in the reports and approved by the Building Official shall be incorporated in the grading plan or specifications.

EXCEPTION: A geotechnical or engineering geology report is not required where the Building Official determines that the nature of the work applied for is such that a report is not necessary.

(Ord. 2010-0053 § 98, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J104.4 Liquefaction study. For sites with mapped maximum considered earthquake spectral response accelerations at short periods (Ss) greater than 0.5g as determined by Section 1613, a study of the liquefaction potential of the site shall be provided, and the recommendations incorporated in the plans. A geotechnical investigation will be required when the proposed work is a “Project” as defined in California Public Resources Code section 2693, and is located in an area designated as a “Seismic Hazard Zone” as defined in Title 14 of the California Code of Regulations section 3722 on Seismic Hazard Zone Maps issued by the State Geologist under Public Resources Code section 2696.

EXCEPTION: 1. A liquefaction study is not required where the Building Official determines from established local data that the liquefaction potential is low.

(Ord. 2010-0053 § 98, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.1 General. Grading inspections shall be governed by Section 108 and as indicated herein. Grading operations for which a permit is required shall be subject to inspection by the Building Official. In addition, professional inspection of grading operations shall be performed by the Field Engineer, Geotechnical Engineer, and the Engineering Geologist retained to provide such services in accordance with this Section for engineered grading and as required by the Building Official for regular grading. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.2 Special and supplemental inspections. The special inspection requirements of Section 1704.7 shall apply to work performed under a grading permit where required by the Building Official. In addition to the called inspections specified in Section J105.7, the Building Official may make such other inspections as may be deemed necessary to determine that the work is being performed in conformance with the requirements of this Code. The Building Official may require investigations and reports by an approved soil testing agency, Geotechnical Engineer and/or Engineering Geologist, and Field Engineer. Inspection reports shall be provided when requested in writing by the Building Official.
The Building Official may require continuous inspection of drainage devices by the Field Engineer in accordance with this Section when the Building Official determines that the drainage devices are necessary for the protection of the structures in accordance with Section 110. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.3 Field engineer. The Field Engineer shall provide professional inspection of those parts of the grading project within such engineer’s area of technical specialty, oversee and coordinate all field surveys, set grade stakes, and provide site inspections during grading operations to ensure the site is graded in accordance with the approved grading plan and the appropriate requirements of this Code. During site grading, and at the completion of both rough grading and final grading, the Field Engineer shall submit statements and reports as required by Sections J105.11 and J105.12. If revised grading plans are required during the course of the work, they shall be prepared by a Civil Engineer and approved by the Building Official. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.4 Geotechnical engineer. The Geotechnical Engineer shall provide professional inspection of those parts of the grading project within such engineer’s area of technical specialty, which shall include observation during grading and testing for required compaction. The Geotechnical Engineer shall provide sufficient observation during the preparation of the natural ground and placement and compaction of the fill to verify that such work is being performed in accordance with the conditions of the approved plan and the appropriate requirements of this Chapter. If conditions differing from the approved Geotechnical Engineering and engineering geology reports are encountered during grading, the Geotechnical Engineer shall provide revised recommendations to the permittee, the Building Official and the Field Engineer. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.5 Engineering geologist. The Engineering Geologist shall provide professional inspection of those parts of the grading project within such engineer’s area of technical specialty, which shall include professional inspection of the bedrock excavation to determine if conditions encountered are in conformance with the approved report. If conditions differing from the approved engineering geology report are encountered, the Engineering Geologist shall provide revised recommendations to the Geotechnical Engineer. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.6 Permittee. The permittee shall be responsible for ensuring that the grading is performed in accordance with the approved plans and specifications and in conformance with the provisions of this Code. The permittee shall engage project consultants, if required under the provisions of this Code, to provide professional inspections on a timely basis. The permittee shall act as a coordinator between the project consultants, the contractor, and the Building Official. In the event of changed conditions, the permittee shall be responsible for informing the Building Official of such change and shall provide revised plans for approval. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.7 Required inspections. The permittee shall call for an inspection by the Building Official at the following various stages of work and shall obtain the approval of the Building Official prior to proceeding to the next stage of work:
Pre-grade. Before any construction or grading activities occur at the site. Permittee shall schedule a pregrade inspection with the Building Official. The permittee shall ensure that all project consultants are present at the pre-grade inspection.
Initial. When the site has been cleared of vegetation and unapproved fill and has been scarified, benched, or otherwise prepared for fill. No fill shall have been placed prior to this inspection.
Rough. When approximate final elevations have been established, drainage terraces, swales, and other drainage devices necessary for the protection of the building sites from flooding have been installed, berms have been installed at the top of the slopes, and the statements required by Section J105.12 have been received.
Final. When grading has been completed, all drainage devices necessary to drain the building pad have been installed, slope planting has been established, irrigation systems have been installed, and the as-built plans and required statements and reports have been submitted. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.8 Notification of noncompliance. If, in the course of fulfilling their respective duties under this Chapter, the Field Engineer, the Geotechnical Engineer, or the Engineering Geologist determines that the work is not being done in conformance with this Chapter or the approved grading plans, the Field Engineer, Geotechnical Engineer, or the Engineering Geologist shall immediately report, in writing, the discrepancies and the recommended corrective measures to the permittee and to the Building Official. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.9 Transfer of responsibility. If the Field Engineer, the Geotechnical Engineer, or the Engineering Geologist of record is changed at any time after the grading plans required pursuant to Section J104.2.2 or J104.2.3 have been approved by the Building Official, the permittee shall immediately provide written notice of such change to the Building Official. The Building Official may stop the grading from commencing or continuing until the permittee has identified a replacement and the replacement has agreed in writing to assume responsibility for those parts of the grading project that are within the replacement’s area of technical competence. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.10 Non-inspected grading. No person shall own, use, occupy, or maintain any non-inspected grading. For the purposes of this Code, non-inspected grading shall be defined as any grading for which a grading permit was first obtained, pursuant to Section J103, supra, but which has progressed beyond any point requiring inspection and approval by the Building Official without such inspection and approval having been obtained. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.11 Routine field inspections and reports. Unless otherwise directed by the Building Official, the Field Engineer for all engineered grading projects shall prepare routine inspection reports and shall file these reports with the Building Official as follows:
1. Bi-weekly during all times when grading of 400 cubic yards or more per week is occurring on the site;
2. Monthly, at all other times; and
3. At any time when requested in writing by the Building Official.
Such reports shall certify to the Building Official that the Field Engineer has inspected the grading site and related activities and has found them in compliance with the approved grading plans and specifications, the building code, all grading permit conditions, and all other applicable ordinances and requirements. The reports shall conform to a standard “Report of Grading Activities” form which shall be provided by the Building Official. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.12 Completion of work. Upon completion of the rough grading work and at the final completion of the work, the following reports and drawings and supplements thereto are required for engineered grading or when professional inspection is otherwise required by the Building Official:
1. An “As-built” grading plan prepared by the Field Engineer retained to provide such services in accordance with Section J105.3 showing all plan revisions as approved by the Building Official. This shall include original ground surface elevations, as-built ground surface elevations, lot drainage patterns, and the locations and elevations of surface drainage facilities and the outlets of subsurface drains. As-built locations, elevations, and details of subsurface drains shall be shown as reported by the Geotechnical Engineer.
The As-built grading plan shall be accompanied by a certification by the Field Engineer that to the best of his or her knowledge, the work within the Field Engineer’s area of responsibility was done in accordance with the final approved grading plan.
2. A report prepared by the Geotechnical Engineer retained to provide such services in accordance with Section J105.4, including locations and elevations of field density tests, summaries of field and laboratory tests, other substantiating data, and comments on any changes made during grading and their effect on the recommendations made in the approved soils engineering investigation report. The report shall include a certification by the Geotechnical Engineer that, to the best of his or her knowledge, the work within the Geotechnical Engineer’s area of responsibility is in accordance with the approved soils engineering report and applicable provisions of this Chapter. The report shall contain a finding regarding the safety of the completed grading and any proposed structures against hazard from landslide, settlement, or slippage.
3. A report prepared by the Engineering Geologist retained to provide such services in accordance with Section J105.5, including a final description of the geology of the site and any new information disclosed during the grading and the effect of such new information, if any, on the recommendations incorporated in the approved grading plan. The report shall contain a certification by the Engineering Geologist that, to the best of his or her knowledge, the work within the Engineering Geologist’s area of responsibility is in accordance with the approved engineering geology report and applicable provisions of this Chapter. The report shall contain a finding regarding the safety of the completed grading and any proposed structures against hazard from landslide, settlement, or slippage. The report shall contain a final as-built geologic map and cross-sections depicting all the information collected prior to and during grading.
4. The grading contractor shall certify, on a form prescribed by the Building Official, that the grading conforms to said as-built plan and the approved specifications. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.13 Notification of completion. The permittee shall notify the Building Official when the grading operation is ready for final inspection. Final approval shall not be given until all work, including installation of all drainage facilities and their protective devices, and all erosion-control measures have been completed in accordance with the final approved grading plan, and all required reports have been submitted and approved. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J105.14 Change of ownership. Unless otherwise required by the Building Official, when a grading permit has been issued on a site and the owner sells the property prior to final grading approval, the new property owner shall be required to obtain a new grading permit. (Ord. 2010-0053 § 99, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J106.1 Maximum cut slope. The slope of cut surfaces shall be no steeper than is safe for the intended use, and shall be no steeper than two units horizontal to one unit vertical (50percent slope) unless the owner or authorized agent furnishes a geotechnical or an engineering geology report, or both justifying a steeper slope. The reports must contain a statement by the Geotechnical Engineer or Engineering Geologist that the site was investigated and an opinion that a steeper slope will be stable and will not create a hazard to public or private property, in conformance with the requirements of Section 111. The Building Official may require the slope of the cut surfaces to be flatter in slope than 2 units horizontal to 1 unit vertical if the Building Official finds it necessary for the stability and safety of the slope.

EXCEPTIONS:

1. A cut surface may be at a slope of 1.5 units horizontal to one unit vertical (67 percent) provided that all the following are met:
1.1 It is not intended to support structures or surcharges.
1.2 It is adequately protected against erosion.
1.3 It is no more than 8 feet (2438 mm) in height.
1.4 It is approved by the Building Official.
1.5 Ground water is not encountered.

(Ord. 2010-0053 § 100, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J106.2 Drainage. Drainage, including drainage terraces and overflow protection, shall be provided as required by Section J109. (Ord. 2010-0053 § 100, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J106.2.1--J106.2.7 Deleted. (Ord. 2010-0053 § 100, 2010.)

J107.1 General. Unless otherwise recommended in the geotechnical report, fills shall comply with the provisions of this Section.

EXCEPTION: The Building Official may permit a deviation from the provisions of this Chapter for minor fills not intended to support structures, where no soils engineering report has been prepared.

(Ord. 2010-0053 § 101, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J107.2 Preparation of ground. Fill slopes shall not be constructed on natural slopes steeper than 2 units horizontal to 1 unit vertical (50 percent slope). The ground surface shall be prepared to receive fill by removing vegetation, topsoil and other unsuitable materials (including any existing fill that does not meet the requirements of this chapter), and scarifying the ground to provide a bond with the fill material.
Subdrains shall be provided under all fills placed in natural drainage courses and in other locations where seepage is evident, except where the Geotechnical Engineer or Engineering Geologist recommends otherwise. Such sub-drainage systems shall be of a material and design approved by the Geotechnical Engineer and acceptable to the Building Official. The Geotechnical Engineer shall provide continuous inspection during the process of subdrain installations. The location of the subdrains shall be shown on a plan prepared by the Soils Engineer. Excavations for the subdrains shall be inspected by the Engineering Geologist when such subdrains are included in the recommendations of the Engineering Geologist. (Ord. 2010-0053 § 101, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J107.3 Benching. Where existing grade is at a slope steeper than 5 units horizontal to one unit vertical (20percent) and the depth of the fill exceeds 5 feet (1,524 mm) benching shall be provided into sound bedrock or other competent material as determined by the Geotechnical Engineer. The ground preparation shall be in accordance with Figure J107.3 or as determined by the Geotechnical Engineer. When fill is to be placed over a cut, a key shall be provided which is at least 10 feet (3,048 mm) in width and 2 feet (610 mm) in depth. The area beyond the toe of fill shall be sloped for sheet overflow or a paved drain shall be constructed thereon. The Geotechnical Engineer or Engineering Geologist or both shall inspect and approve the cut as being suitable for the foundation and placement of fill material before any fill material is placed on the excavation.

(Ord. 2010-0053 §§ 101, 102, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J107.4 Fill material. Fill material shall not include organic, frozen, or other deleterious materials. Unless approved by the Building Official, no rock or similar irreducible material greater than 12 inches (304.8mm) in any dimension shall be included in fills.

EXCEPTION: The Building Official may permit placement of larger rock when the Geotechnical Engineer properly devises and recommends a method of placement, and continuously inspects the placement and approves the fill stability. The following requirements shall also apply:

1. Prior to issuance of the grading permit, potential rock disposal areas shall be delineated on the grading plan.

2. Rock sizes greater than 12 inches (304.8 mm) in maximum dimension shall be 10 feet (3048 mm) or more below grade, measured vertically.

3. Rocks shall be placed so as to assure filling of all voids with well-graded soil.

4. The reports submitted by the Geotechnical Engineer shall acknowledge the placement of the oversized material and whether the work was performed in accordance with the engineer’ s recommendations and the approved plans.

5. The location of oversized rock dispersal areas shall be shown on the as-built plan.

(Ord. 2010-0053 § 101, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J107.5 Compaction. All fill material shall be compacted to a minimum of 90 percent of maximum density as determined by ASTM D 1557, Modified Proctor, in lifts not exceeding 12 inches (305mm) in depth within 40 feet (12192 mm) below finished grade and 93 percent of maximum dry density deeper than 40 feet (12192 mm) below finished grade, unless a lower relative compaction (not less than 90 percent of maximum dry density) is justified by the Geotechnical Engineer and approved by the Building Official. Where ASTM D 1557, Modified Proctor is not applicable, a test acceptable to the Building Official shall be used.
Field density shall be determined by a method acceptable to the Building Official. However, not less than ten percent of the required density tests, uniformly distributed, shall be obtained by the Sand Cone Method.
Fill slopes steeper than 2 units horizontal to 1 unit vertical (50 percent slope) shall be constructed by the placement of soil a sufficient distance beyond the proposed finish slope to allow compaction equipment to operate at the outer surface limits of the final slope surface. The excess fill is to be removed prior to completion or rough grading. Other construction procedures may be utilized when it is first shown to the satisfaction of the Building Official that the angle of slope, construction method, and other factors will comply with the intent of this Section. (Ord. 2010-0053 § 101, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J107.6 Maximum fill slope. The slope of fill surfaces shall be no steeper than is safe for the intended use. Fill slopes steeper than two units horizontal to one unit vertical (50 percent) shall be justified by geotechnical engineering reports conforming with the requirements of Section 111, containing a statement by the Soils Engineer that the site has been investigated and an opinion that a steeper fill slope will be stable and will not create a hazard to public or private property. Substantiating calculations and supporting data may be required where the Building Official determines that such information is necessary to verify the stability and safety of the proposed slope. The Building Official may require the fill slope to be constructed with a face flatter in slope than 2 units horizontal to 1 unit vertical (50 percent slope) if the Building Official finds it necessary for stability and safety of the slope. (Ord. 2010-0053 § 101, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J107.7 Slopes to receive fill. Where fill is to be placed above the top of an existing slope steeper than 3 units horizontal to 1 unit vertical (33 percent slope), the toe of the fill shall be set back from the top edge of the existing slope a minimum distance of 6 feet (1829 mm) measured horizontally or such other distance as may be specifically recommended by a Geotechnical Engineer or Engineering Geologist and approved by the Building Official. (Ord. 2010-0053 § 101, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J107.8 Inspection of fill. For engineered grading, the Geotechnical Engineer shall provide sufficient inspections during the preparation of the natural ground and the placement and compaction of the fill to ensure that the work is performed in accordance with the conditions of plan approval and the appropriate requirements of this Chapter. In addition to the above, the Geotechnical Engineer shall provide continuous inspection during the entire fill placement and compaction of fills that will exceed a vertical height or depth of 30 feet (9144 mm) or result in a slope surface steeper than 2 units horizontal to 1 unit vertical (50 percent slope). (Ord. 2010-0053 § 101, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J107.9 Testing of fills. Sufficient tests of the fill soils shall be made to determine the density and to verify compliance of the soil properties with the design requirements. This includes soil types and shear strengths in accordance with Section J112 Referenced Standards. (Ord. 2010-0053 § 101, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J108.1 General. Cut and fill slopes shall be set back from the property lines in accordance with this Section. Setback dimensions shall be horizontal distances measured perpendicular to the property line and shall be as shown in Figure J108.1, unless substantiating data is submitted justifying reduced setbacks and reduced setbacks are recommended in a geotechnical engineering and engineering geology report approved by the Building Official. (Ord. 2010-0053 § 103, 2010; Ord. 2007-0108 § 33 (part), 2007.)

(Ord. 2010-0053 § 104, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J108.2 Top of slope. The setback at the top of a cut slope shall not be less than that shown in Figure J108.1, or than is required to accommodate any required interceptor drains, whichever is greater. For graded slopes the property line between adjacent lots shall be at the apex of the berm at the top of the slope. Property lines between adjacent lots shall not be located on a graded slope steeper than 5 units horizontal to 1 unit vertical (20 percent slope). (Ord. 2010-0053 § 103, 2010.)

J108.3 Toe of fill slope. The setback from the toe of a fill slope shall not be less than that shown by figure J108.1. Where required to protect adjacent properties at the toe of a slope from adverse effects of the grading, additional protection, approved by the Building Official, shall be included. Such protection may include but shall not be limited to:
1. Setbacks greater than those required by Figure J108.1.
2. Provisions for retaining walls or similar construction.
3. Erosion protection of the fill slopes.
4. Provision for the control of surface waters.
(Ord. 2010-0053 § 103, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J108.4 Alternate setbacks. The Building Official may approve alternate setbacks if he or she determines that no hazard to life or property will be created or increased. The Building Official may require an investigation and recommendation by a qualified engineer or Engineering Geologist to justify any proposed alternate setback. (Ord. 2010-0053 § 103, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J109.1 General. Unless otherwise recommended by a Civil Engineer and approved by the Building Official, drainage facilities and terracing shall be provided in accordance with the requirements of Section J109.2 for all cut and fill slopes steeper than 3 units horizontal to 1 unit vertical (33 percent slope).
For slopes flatter than 3 units horizontal to 1 unit vertical (33 percent slope) and steeper than 5 units horizontal to 1 unit vertical (20 percent slope) a paved swale or ditch shall be installed at 30 foot (9144 mm) vertical intervals to control surface drainage and debris. Swales shall be sized based on contributory area and have adequate capacity to convey intercepted waters to the point of disposal as defined in Section J109.5. Swales must be paved with reinforced concrete not less than 3 inches (76.2 mm) in thickness, reinforced with 6-inch (152.4 mm) by 6-inch (152.4 mm) No. 10 by No. 10 welded wire fabric or equivalent reinforcing centered in the concrete slab or an equivalent approved by the Building Official. Swales must have a minimum flow line depth of 1-foot (304.8 mm) and a minimum paved width of 18 inches (457.2 mm). Swales shall have a minimum gradient of not less than 5 percent. There shall be no reduction in grade along the direction of flow unless the velocity of flow is such that slope debris will remain in suspension on the reduced grade. (Ord. 2010-0053 § 105, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J109.2 Drainage terraces. Drainage terraces at least 8 feet (2438 mm) in width shall be established at not more than 30-foot (9144 mm) vertical intervals on all cut or fill slopes to control surface drainage and debris. When only one terrace is required, it shall be at midheight. For cut or fill slopes greater than 100 feet (30480 mm) and up to 120 feet (36576 mm) in vertical height, one terrace at approximately midheight shall be 20 feet (6096 mm) in width. Terrace widths and spacing for cut and fill slopes greater than 120 feet (36,576 mm) in height shall be designed by the Civil Engineer and approved by the Building Official. Suitable access shall be provided to permit proper cleaning and maintenance.
Drainage swales on terraces shall have a longitudinal grade of not less than 5 percent nor more than 12 percent and a minimum depth of 1-foot (305 mm) at the flow line. There shall be no reduction in grade along the direction of flow unless the velocity of flow is such that slope debris will remain in suspension on the reduced grade. Drainage swales must be paved with reinforced concrete not less than 3 inches (77 mm) in thickness, reinforced with 6-inch (153 mm) by 6-inch (153 mm) No. 10 by No. 10 welded wire fabric or equivalent reinforcing centered in the concrete slab or an approved equal paving. Drainage swales shall have a minimum depth at the deepest point of 1 foot (305 mm) and a minimum paved width of 5 feet (1524 mm). Drainage terraces exceeding 8 feet (2439 mm) in width need only be so paved for a width of 8 feet (2439 mm) provided such pavement provides a paved swale at least 1 foot (305 mm) in depth. Downdrains or drainage outlets shall be provided at approximately 300-foot (91440 mm) intervals along the drainage terrace or at equivalent locations. Downdrains and drainage outlets shall be of approved materials and of adequate capacity to convey the intercepted waters to the point of disposal as defined in Section J109.5. (Ord. 2010-0053 § 105, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J109.3 Interceptor drains and overflow protection. Berms, interceptor drains, swales, or other devices shall be provided at the top of cut or fill slopes to prevent surface waters from overflowing onto and damaging the face of a slope. Berms used for slope protection shall not be less than 12 inches (305 mm) above the level of the pad and shall slope back at least 4 feet (1220 mm) from the top of the slope.
Interceptor drains shall be installed along the top of graded slopes greater than 5 feet in height receiving drainage from a slope with a tributary width greater than 30 feet (9144 mm), measured horizontally. They shall have a minimum depth of 1 foot (305 mm) and a minimum width of 3 feet (915 mm). The slope shall be approved by the Building Official, but shall not be less than 50 units horizontal to 1 unit vertical (2 percent). The drain shall be paved with concrete not less than 3 inches (76mm) in thickness, or by other materials suitable to the application and reinforced as required for drainage terraces. Discharge from the drain shall be accomplished in a manner to prevent erosion and shall be approved by the Building Official. (Ord. 2010-0053 § 105, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J109.4 Drainage across property lines. Drainage across property lines shall not exceed that which existed prior to grading. Excess or concentrated drainage shall be contained on site or directed to an approved drainage facility. Erosion of the ground in the area of discharge shall be prevented by installation of nonerosive down drains or other devices. (Ord. 2007-0108 § 33 (part), 2007.)

J109.5 Disposal. All drainage facilities shall be designed to convey waters to the nearest practicable street, storm drain, or natural watercourse or drainage way approved by the Building Official or other appropriate governmental agency provided that the discharge of such waters at that location will not create or increase a hazard to life or property. Erosion of the ground in the area of discharge shall be prevented by installation of non-erosive down drains or other devices. Desilting basins, filter barriers, or other methods, as approved by the Building Official, shall be utilized to remove sediments from surface waters before such waters are allowed to enter streets, storm drains, or natural watercourses. If the drainage device discharges onto natural ground, riprap, or a similar energy dissipator may be required.
Building pads shall have a minimum drainage gradient of 2 percent toward an approved drainage facility or a public street unless otherwise directed by the Building Official. A lesser slope may be approved by the Building Official for sites graded in relatively flat terrain, or where special drainage provisions are made, when the Building Official finds such modification will not result in a hazard to life or property. (Ord. 2010-0053 § 105, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J110.1 General. The faces of cut and fill slopes shall be prepared and maintained to control erosion. This control shall consist of effective planting, erosion control blankets, soil stabilizers, or other means as approved by the Building Official.

EXCEPTION: Erosion control measures need not be provided on cut slopes not subject to erosion due to the erosion-resistant character of the materials as approved by the Project Consultants, to the satisfaction of the Building Official.

(Ord. 2010-0053 § 106, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J110.2 Other devices. Where necessary, check dams, cribbing, riprap or other devices or methods shall be employed to control erosion and provide safety. (Ord. 2007-0108 § 33 (part), 2007.)

J110.3 Planting. The surface of all cut slopes more than 5 feet (1524 mm) in height and fill slopes more than 3 feet (915 mm) in height shall be protected against damage from erosion by planting with grass or ground cover plants. Slopes exceeding 15 feet (4572 mm) in vertical height shall also be planted with shrubs, spaced at not to exceed 10 feet (3048 mm) on centers, or trees, spaced at not to exceed 20 feet (6096 mm) on centers; or a combination of shrubs and trees at an equivalent spacing, in addition to the grass or ground cover plants. The plants selected and planting methods used shall be suitable for the soil and climatic conditions of the site.
Plant material shall be selected which will produce a coverage of permanent planting to effectively control erosion. Consideration shall be given to deep-rooted plant material needing limited watering, maintenance, high root to shoot ratio, wind susceptibility, and fire-retardant characteristics. All plant materials must be approved by the Building Official.
Planting may be modified for the site if specific recommendations are provided by both the Geotechnical Engineer and a Landscape Architect. Specific recommendations must consider soils and climatic conditions, irrigation requirements, planting methods, fire-retardant characteristics, water efficiency, maintenance needs, and other regulatory requirements. Recommendations must include a finding that the alternative planting will provide a permanent and effective method of erosion control. Modifications to planting must be approved by the Building Official prior to installation. (Ord. 2010-0053 § 106, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J110.4 Irrigation. Slopes required to be planted by Section J110.3 shall be provided with an approved system of irrigation that is designed to cover all portions of the slope. Irrigation system plans shall be submitted to and approved by the Building Official prior to installation. A functional test of the system may be required.
For slopes less than 20 feet (6096 mm) in vertical height, hose bibs to permit hand watering will be acceptable if such hose bibs are installed at conveniently accessible locations where a hose no longer than 50 feet (15240 mm) is necessary for irrigation.
Irrigation requirements may be modified for the site if specific recommendations are provided by both the Geotechnical Engineer and a Landscape Architect. Specific recommendations must consider soils and climatic conditions, plant types, planting methods, fire-retardant characteristics, water efficiency, maintenance needs, and other regulatory requirements. Recommendations must include a finding that the alternative irrigation method will sustain the proposed planting and provide a permanent and effective method of erosion control. Modifications for irrigation systems must be approved by the Building Official prior to installation. (Ord. 2010-0053 § 106, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J110.5 Plans and specifications. Planting and irrigation plans shall be submitted for slopes required to be planted and irrigated pursuant to Sections J110.3 and J110.4. Except as otherwise required by the Building Official for minor grading, the plans for slopes 20 feet (6096 mm) or more in vertical height shall be prepared and signed by a Civil Engineer or landscape architect. If requested by the Building Official, planting and irrigation details shall be included on the grading plan. (Ord. 2010-0053 § 106, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J110.6 Rodent control. Fill slopes shall be protected from potential slope damage by a preventative program of rodent control. (Ord. 2010-0053 § 106, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J110.7 Release of security. The planting and irrigation systems required by this Section shall be installed as soon as practical after rough grading. Prior to final approval of grading and before the release of the grading security, the planting shall be well established and growing on the slopes and there shall be evidence of an effective rodent control program. (Ord. 2010-0053 § 106, 2010; Ord. 2007-0108 § 33 (part), 2007.)

J110.8 National Pollutant Discharge Elimination System (NPDES) compliance.

J110.8.1 General. All grading plans and permits and the owner of any property on which such grading is performed shall comply with the provisions of this Section for NPDES compliance.
All best management practices shall be installed before grading begins or as instructed in writing by the Building Official for unpermitted grading as defined by Section J103.3. As grading progresses, all best management practices shall be updated as necessary to prevent erosion and to control construction-related pollutants from discharging from the site. All best management practices shall be maintained in good working order to the satisfaction of the Building Official until final grading approval has been granted by the Building Official and all permanent drainage and erosion control systems, if required, are in place. Failure to comply with this Section is subject to “Noncompliance Penalties” pursuant to Section J110.8.5. Payment of a penalty shall not relieve any persons from fully complying with the requirements of this Code in the execution of the work. (Ord. 2010-0053 § 106, 2010.)

J110.8.2 Storm Water Pollution Prevention Plan (SWPPP). The Building Official may require a SWPPP. The SWPPP shall contain details of best management practices, including desilting basins or other temporary drainage or control measures, or both, as may be necessary to control construction-related pollutants which originate from the site as a result of construction-related activities. When the Building Official requires a SWPPP, no grading permit shall be issued until the SWPPP has been submitted to and approved by the Building Official.
For unpermitted grading as defined by Section J103.3 upon written request a SWPPP in compliance with the provisions of this Section and Section 106.4.3 for NPDES compliance shall be submitted to the Building Official. Failure to comply with this Section is subject to “Noncompliance Penalties” per Section J110.8.5. Payment of a penalty shall not relieve any persons from fully complying with the requirements of this Code in the execution of the work. (Ord. 2010-0053 § 106, 2010.)

J110.8.3 Wet Weather Erosion Control Plans (WWECP). Where a grading permit is issued and the Building Official determines that the grading will not be completed prior to November 1, the owner of the site on which the grading is being performed shall, on or before October 1, file or cause to be filed with the Building Official a WWECP. The WWECP shall include specific best management practices to minimize the transport of sediment and protect public and private property from the effects of erosion, flooding, or the deposition of mud, debris, or construction-related pollutants. The best management practices shown on the WWECP shall be installed on or before October 15. The plans shall be revised annually or as required by the Building Official to reflect the current site conditions.
The WWECP shall be accompanied by an application for plan checking services and plan-checking fees in an amount determined by the Building Official, up to but not exceeding 10 percent of the original grading permit fee.
Failure to comply with this Section is subject to “Noncompliance Penalties” pursuant to Section J110.8.5. Payment of a penalty shall not relieve any persons from fully complying with the requirements of this Code in the execution of the work. (Ord. 2010-0053 § 106, 2010.)

J110.8.4 Storm Water Pollution Prevention Plan (SWPPP), effect of noncompliance. Should the owner fail to submit the SWPPP or the WWECP as required by Section J110.8 or fails to install the best management practices, it shall be deemed that a default has occurred under the conditions of the grading permit security. The Building Official may thereafter enter the property for the purpose of installing, by County forces or by other means, the drainage, erosion control, and other devices shown on the approved plans, or if there are no approved plans, as the Building Official may deem necessary to protect adjoining property from the effects of erosion, flooding, or the deposition of mud, debris, or constructed-related pollutants.
The Building Official shall also have the authority to impose and collect the penalties imposed by Section J110.8.5. Payment of a penalty shall not relieve any persons from fully complying with the requirements of this Code in the execution of the work. (Ord. 2010-0053 § 106, 2010.)

J110.8.5 Noncompliance penalties. The amount of the penalties shall be as follows:
1. If a SWPPP or a WWECP is not submitted as prescribed in Sections J110.8.2 and J110.8.3:

2. If the best management practices for storm water pollution prevention and wet weather erosion control, as approved by the Building Official, are not installed as prescribed in this Section J110.8:

NOTE: See Section 108 for inspection request requirements.

(Ord. 2010-0053 § 106, 2010.)

J111.1 General. All grading plans and permits and the owner of any property on which such grading is performed shall comply with the provisions of this section for NPDES compliance.
All best management practices shall be installed before grading begins. As grading progresses, all best management practices shall be updated as necessary to prevent erosion and to control constructed related pollutants from discharging from the site. All best management practices shall be maintained in good working order to the satisfaction of the Building Official until final grading approval has been granted by the Building Official and all permanent drainage and erosion control systems, if required, are in place. (Ord. 2007-0108 § 33 (part), 2007.)

J111.2 Storm Water Pollution Prevention Plan (SWPPP). The Building Official may require a SWPPP. The SWPPP shall contain details of best management practices, including desilting basins or other temporary drainage or control measures, or both, as may be necessary to control construction-related pollutants which originate from the site as a result of construction related activities. When the Building Official requires a SWPPP, no grading permit shall be issued until the SWPPP has been submitted to and approved by the Building Official. (Ord. 2007-0108 § 33 (part), 2007.)

J111.3 Wet Weather Erosion Control Plans (WWECP). Where a grading permit is issued and the Building Official determines that the grading will not be completed prior to November 1, the owner of the site on which the grading is being performed shall, on or before October 1, file or cause to be filed with the Building Official a WWECP. The WWECP shall include specific best management practices to minimize the transport of sediment and protect public and private property from the effects of erosion, flooding or the deposition of mud, debris or construction related pollutants. The best management practices shown on the WWECP shall be installed on or before October 15. The plans shall be revised annually or as required by the Building Official to reflect the current site conditions.
The WWECP shall be accompanied by an application for plan checking services and plan-checking fees equal in amount to 10 percent of the original grading permit fee. (Ord. 2007-0108 § 33 (part), 2007.)

J111.4 Storm Water Pollution Prevention Plan, Effect of Noncompliance. Should the owner fail to submit the SWPPP or the WWECP as required by this Section J111 or fails to install the best management practices required by this Section J111, it shall be deemed that a default has occurred under the conditions of the grading permit security. The Building Official may thereafter enter the property for the purpose of installing, by County forces or by other means, the drainage, erosion control and other devices shown on the approved plans, or if there are no approved plans, as the Building Official may deem necessary to protect adjoining property from the effects of erosion, flooding, or the deposition of mud, debris or constructed related pollutants.
The Building Official shall also have the authority to impose and collect the penalties imposed by this section. Payment of a penalty shall not relieve any persons from fully complying with the requirements of this Code in the execution of the work.
The amount of the penalties shall be as follows:
1. If a SWPPP or a WWECP is not submitted as prescribed in Sections J111.2 and/or J111.3:

2. If the best management practices for storm water pollution prevention and wet weather erosion control, as approved by the Building Official, are not installed as prescribed in this Section J111:

NOTE: See Section 108 for inspection request requirements.

(Ord. 2007-0108 § 33 (part), 2007.)

These regulations establish minimum standards and are not intended to prevent the use of alternate materials, methods, or means of conforming to such standards, provided such alternate has been approved.
The Building Official shall approve such an alternate provided he or she determines that the alternate is, for the purpose intended, at least the equivalent of that prescribed in this Code in quality, strength, effectiveness, durability, and safety.
The Building Official shall require that sufficient evidence or proof be submitted to substantiate any claims regarding the alternate.
The standards listed below are recognized standards. Compliance with these recognized standards shall be prima facie evidence of compliance with the standards set forth in Section J107.

(Ord. 2010-0053 § 107, 2010; Ord. 2007-0108 § 33 (part), 2007.)