Chapter 18.88


18.88.010    Purpose of Chapter

18.88.020    Applicability of Design and Improvement Standards

18.88.030    Subdivision Design Standards

18.88.040    Site Preparation and Subdivision Construction

18.88.050    Subdivision Improvement Requirements

18.88.060    Improvement Plans

18.88.070    Installation of Improvements

18.88.080    Improvement Agreements and Security

18.88.090    Soils Reports

18.88.010 - Purpose of Chapter

This Chapter establishes standards for the design and layout of subdivisions, and the design, construction or installation of public improvements within subdivisions. The purpose of these standards is to ensure, through careful site evaluation and design, the creation of new usable parcels that are consistent with the General Plan and any applicable specific plan.

18.88.020 - Applicability of Design and Improvement Standards

The requirements of this Chapter apply as follows:

A.    Extent of required improvements. Each subdivision shall provide the improvements required by this Chapter, and any additional improvements required by conditions of approval.

B.    Applicable design standards, timing of installation. The subdivider shall construct all on- and off-site improvements according to standards approved by the Director of Public Works. No Final or Parcel Map shall be presented to the Council for approval until the subdivider either completes the required improvements, or enters into a subdivision improvement agreement with the City for the work.

C.    Subdivision improvement standards - Conditions of approval. The applicable subdivision improvement and dedication requirements of this Chapter and any other improvements and dedications required by the Review Authority in compliance with Section 18.81.070 (Tentative Map Approval or Disapproval), shall be described in conditions of approval adopted for each approved Tentative Map (Section 18.81.080). The design, construction or installation of all subdivision improvements shall comply with the requirements of the Director of Public Works.

D.    Oversizing of improvements.

1.    At the discretion of the Review Authority, improvements required to be installed by the subdivider for the benefit of the subdivision may also be required to provide supplemental size, capacity, number, or length for the benefit of property not within the subdivision, and may be required to be dedicated to the City, in compliance with Map Act Article 6, Chapter 4.

2.    In the event that oversizing is required, the City shall comply with all applicable provisions of Map Act Sections 66485 et seq., including the reimbursement provisions of Map Act Section 66486.

3.    If a parcel proposed for subdivision is subject to an existing reimbursement agreement, the subdivider shall pay the required reimbursement prior to the recordation of the Final Map or the issuance of a building permit for construction on the parcel, whichever occurs first.

E.    Exceptions. Exceptions to the requirements of this Chapter may be requested and considered in compliance with Section 18.80.090 (Exceptions to Subdivision Standards).

18.88.030 - Subdivision Design Standards

A.    Purpose. This Section establishes standards for the design and layout of subdivisions, and the design, construction or installation of public improvements within subdivisions. The purpose of these standards is to ensure, through careful site evaluation and design, the creation of new usable parcels that are consistent with the General Plan and any applicable specific plan.

B.    Residential density. The maximum number of dwelling units permitted within a proposed subdivision shall not exceed the density established by the General Plan for the site and the maximum number of dwelling units permitted by the applicable zoning district, except in the case where a density bonus is granted in compliance with Chapter 18.31 (Density Bonuses and Affordable Housing Incentives).

C.    Streets and street layout. The layout, design, and construction of proposed streets shall comply with the General Plan, the City’s Standard Specifications for Public Improvements the following requirements, and the energy conservation standards of Subsection F.

1.    Interconnected streets. Streets proposed within a new subdivision shall be interconnected and shall connect with adjacent streets external to the subdivision, to provide multiple routes for pedestrian and vehicle trips from, to, and within the subdivision, as determined by the Review Authority to be appropriate.

2.    Complete Streets. All proposed and constructed streets shall be complete streets and shall be designed and installed to ensure that the safety and convenience of all users of the transportation system are accommodated, including pedestrians, bicyclists, users of mass transit, people with disabilities, the elderly, motorists, freight providers, emergency responders, and adjacent land uses. An exception to this requirement may be granted by City Council so long as one or more of the following conditions is met:

a)    An affected roadway prohibits, by law, use by specified users, in which case a greater effort shall be made to accommodate those specified users elsewhere, including on roadways that cross or otherwise intersect with the affected roadway; or

b)    The costs of providing accommodation are excessively disproportionate to the need or probable use; or

c)    The existing and planned population, employment densities, traffic volumes, or level of transit service around a particular roadway as documented by the Director is so low that future expected users of the roadway will not include pedestrians, public transportation, freight vehicles, bicyclists and/or other users.

3.    Low Impact Development. All proposed and constructed streets shall be designed and installed in conformance with Low Impact Development Design Principles and Strategies (see glossary).

4.    Street extensions and stub streets.

a.    Street extensions. Where the subdivision adjoins unsubdivided land, streets in the subdivision shall be extended to the adjacent unsubdivided land, as prescribed by the Review Authority, to provide access to the unsubdivided land in the event of its future subdivision.

b.    Stub street improvements. In the case of stub-end streets extending to the boundary of the property, a barricade, the design to be approved by the Director of Public Works, shall be constructed at the end of the stub-end street, pending the extension of the street into adjacent property. Where required by the commission, a temporary connection to another street, or a temporary turnaround, shall be provided by the subdivider.

c.    Required notification. The developer shall pay the cost for the City to install a sign at the location of a future street extension to give notice to future homebuyers that the street will be opened or extended at some time in the future. The sign shall be installed prior to the sale of the first unit within the project.

5.    Dead-end streets. Subdivision design shall not include dead-end streets except where through streets cannot be provided because of existing development or an environmental feature requiring protection and/or preservation (e.g., a creek channel). The length of a dead-end street shall not exceed 500 feet, except that a dead-end street of up to 600 feet in length may be permitted, provided that it has frontage of no more than 16 lots.

6.    Intersection design. All streets shall normally intersect as nearly as possible at right angles, except when it can be shown that any other street pattern will improve design of the subdivision without hindering traffic pedestrian or bicycle safety. Street intersections shall be narrowed at each corner with traffic-calming features, in compliance with the City’s Standard Specifications for Public Improvements.

7.    Pedestrian walkways away from street frontages. As part of subdivision approval, the City may require dedicated and improved pedestrian walkways in locations away from street frontages where necessary to provide safe and convenient pedestrian access to a public facility or to otherwise provide convenient connections between existing pedestrian routes. Where walkways are required, the Director of Public Works shall specify standards for their design and construction.

8.    Street dedications. A street that is not constructed to City standards will not be accepted by the City for dedication as a public street. However, even a street that complies with all applicable City standards may not be accepted for dedication. Acceptance of street dedication is at the discretion of the Council.

D.    Block design.

1.    Block length. No block face shall exceed a length of 500 feet. No block perimeter shall exceed 2,000 feet.

2.    Block width. The width of each block shall be sufficient for an ultimate layout of two tiers of lots within the block, preferably with an alley between the tiers, with the lots sized in compliance with this Section. The Review Authority may approve alternative designs where it determines that surrounding subdivision layout, property lines, or topographic conditions require other standards.

E.    Parcel design. The size, shape and arrangement of proposed parcels shall comply with this Section, and with any General Plan policy, specific plan requirement, or other Municipal Code provision that applies to proposed subdivisions.

1.    General parcel design standards.

a.    Each proposed parcel shall be determined by the Review Authority to be “buildable” because it contains at least one building site that can accommodate a structure in compliance with all applicable provisions of this Development Code.

b.    No parcel shall be created that is divided by a City boundary line.

c.    No subdivision shall be approved which leaves unsubdivided islands, strips or parcels, or property unsuitable for subdividing, which is not either accepted by the City or other appropriate entity for public use, or maintained as common area, within the development.

2.    Parcel area. The minimum area for new parcels shall be as required by Article 2 (Zoning Districts and Allowable Land Uses) for the applicable zoning district, except as otherwise provided by this Section.

a.    Calculation of area. When calculating the area of a parcel to determine compliance with this Section, Article 2, or the General Plan, the following shall be deducted from the gross area of any parcel, regardless of whether they may be used by the general public or are reserved for residents of the subdivision:

i)    A vehicular or non-vehicular access easement through the parcel;

ii)    An easement for an open drainage course, whether a ditch, natural channel or floodway; or

iii)    The “flag pole” (access strip) of a flag lot.

b.    Minimum lot area requirements for common interest projects. The minimum lot area requirements of Article 3 shall not apply to condominiums, condominium conversions, and townhouses, but shall apply to the creation of the original parcel or parcels that are the location of the condominium or townhouse.

3.    Dimensions. The dimensions of new parcels shall comply with the applicable provisions of Article 2, or as otherwise required by the Review Authority.

4.    Lot line orientation. Side lot lines shall be at right angles to the street on straight streets and shall be approximately radial on curved streets.

5.    Parcel configuration. The layout of proposed parcels and streets shall be designed to use land efficiently and minimize site disturbance in terms of cuts and fills and the removal of vegetation. See also the lot design provisions regarding energy conservation in Subsection F.

a.    Street frontage required. Each proposed parcel shall have frontage on a public street. The frontage width shall be at least the minimum lot width required by the applicable zoning district, except where a flag lot is approved in compliance with Subsection E.3.d (Flag lots).

b.    Double-frontage lots. Parcels with streets along both the front and rear lot lines shall be prohibited, except when necessitated by topographical or other physical conditions or where access from one of the roads is prohibited. (An alley is not considered a street for the purposes of this Section.)

Vehicular access onto a double frontage lot shall not be from a major (i.e., arterial or collector) street, but shall be taken from a residential street or the more minor of the two frontages; however, the primary building facade shall face the major street.

c.    Cul-de-sac parcels. The minimum street frontage width for cul-de-sacs shall be 25 feet. The minimum depth of a parcel accessed by a cul-de-sac shall be an average of 90 feet.

d.    Flag lots. Flag lots may be approved only where the Review Authority determines that unusual depth or other characteristic of a parcel to be subdivided prevents one or more proposed parcels from having a frontage width equal to the minimum lot width required by the applicable zoning district. Where allowed, the “flag pole” portion of a flag lot shall have a minimum width of 20 feet; provided that the Review Authority may require additional width depending upon the length of the flag pole and traffic safety sight distance considerations. No more than two parcels shall be provided access from a single flag pole.

6.    Driveway standards. Proposed parcels shall be designed to accommodate driveways designed in compliance with Section 18.36.100 (Driveways and Site Access). A subdivision of larger parcels shall be designed so that individual parcels are designed with single or limited access points, with access easements to serve the smaller lots. Safety shall be the principal factor in determining the number and location of access points.

F.    Energy conservation. Each proposed subdivision shall be designed to provide maximum opportunities for renewable energy generation and energy conservation, including opportunities for active and passive solar, in compliance with the Sustainability Element of the Inland General Plan and Map Act Section 66473.1.

G.    Walled or gated communities. No residential development within the City shall be entirely enclosed by a wall or fence, and no residential area shall be provided with gates or other limitations on general public pedestrian or vehicle access to the streets or sidewalks within the development.

18.88.040 - Site Preparation and Subdivision Construction

A.    Grading. Prior to the issuance of a Building Permit, a grading plan prepared and signed by a registered civil engineer shall be submitted to the Director of Public Works. The grading plan and proposed grading shall comply with all applicable requirements of Chapters 18.60 (Grading Permit Requirements and Procedures), and 18.62 (Grading, Erosion, and Sediment Control Standards).

B.    Erosion and sediment control. A proposed subdivision shall be designed so that all grading incorporates appropriate erosion and sediment control measures.

18.88.050 - Subdivision Improvement Requirements

Each subdivision shall be constructed with the following improvements as applicable, and as required by Tentative Map conditions of approval, the approved subdivision improvement plans, and in compliance with the City’s Standard Specifications for Public Improvements, and Municipal Code Title 12 (Public Improvements), and Title 14 (Water and Sewers).

A.    Bicycle paths and multiple use trails. The subdivider shall construct bicycle paths, multiple use trails, and/or access to multiple use trails within an approved subdivision in compliance with the Inland General Plan.

B.    Fire hydrants. The subdivider shall install fire hydrants of sizes and at locations approved by the Fire Chief. All piping, gate valves, extensions and risers associated with fire hydrant installation must be installed by the subdivider in accordance with City Standards and Specifications and at locations approved by the Director of Public Works.

C.    Landscaping. Landscaping shall be provided in compliance with Chapter 18.34 (Landscaping Standards).

D.    Monuments. The subdivider shall install monuments in compliance with the requirements of the Director of Public Works, and Map Act Chapter 4, Article 18.

E.    Private facilities - Maintenance. A subdivision with common area or private streets shall have conditions, covenants, and restrictions (CC&Rs) approved by the City to provide for the maintenance of the common areas and/or private streets, and establish standards for maintenance.

F.    Public utilities and utility easements. Each approved parcel shall be provided connections to public utilities, including electricity, water, sewer, and telecommunications services, which shall be installed as part of the subdivision improvements as provided by this Section.

1.    Underground utilities required. Utilities in new subdivisions shall be installed underground, as follows. These requirements do not apply to utility lines which do not serve the area being subdivided. Telecommunications facilities are also subject to the requirements of Chapter 18.44 (Telecommunications Facilities).

a.    When undergrounding is required. All existing and proposed utility distribution facilities (including electric, telecommunications and cable television lines) installed in and for the purpose of supplying service to any subdivision shall be installed underground. Equipment appurtenant to underground facilities, including surface mounted transformers, pedestal mounted terminal boxes and meter cabinets, and concealed ducts, shall also be located underground or entirely within a building. Additionally sufficient conduit capacity shall be provided in under-street utility lines to accommodate the installation of fiber optics and other telecom technologies as they come available.

The subdivider is responsible for complying with the requirements of this Section and shall make the necessary arrangements with the affected utility companies for facility installation.

b.    Location of installation. Underground utility lines may be installed within street rights-of-way or along a lot line, subject to appropriate easements being provided if necessary. When installed within street rights-of-way, their location and method of installation, insofar as it affects other improvements within the street right-of-way, shall be subject to the approval of the Director of Public Works.

2.    Utility easements - Minimum width. The minimum width of easements for public or private utilities, sanitary sewers, or water distribution systems shall be determined by the Review Authority based on the recommendations of the Director of Public Works for City facilities, and the recommendations of the applicable utility company, for public or private utilities.

3.    Timing of installation. All underground utilities, water lines, sanitary sewers, and storm drains installed in streets, shall be constructed before the streets are surfaced. Connections to all underground utilities, water lines, and sanitary sewers from approved parcels shall be laid to sufficient lengths, as determined by the Director of Public Works, to avoid the need for disturbing the street improvements when service connections are made.

G.    Sewage disposal. Each parcel within an approved subdivision shall be provided a connection to the City’s sewage collection, treatment, and disposal system, in compliance with the City’s improvement standards and specifications. The subdivider shall also pay the City’s required connection fee.

H.    Streets. All public streets within an approved subdivision shall be constructed by the subdivider in compliance with Section 18.88.030.C (Streets and Street Layout), and the approved subdivision improvement plans. Private streets are prohibited.

I.    Street lighting. All proposed subdivisions shall provide street lighting facilities designed and constructed in compliance with the City’s improvement standards and specifications. The subdivider shall also pay the street light maintenance and energy fee required by the City.

J.    Street signs and street names. The naming of streets within a proposed subdivision shall comply with Municipal Code Chapter 12.12 (Street Naming and Address Assigning).

K.    Storm drainage. Stormwater runoff from the subdivision that is not infiltrated on site shall be collected and conveyed by an approved storm drain system. The storm drain system shall be sized designed for the ultimate development of the drainage area. The storm drain system shall provide for the protection of abutting and off-site properties that would be adversely affected by any increase in peak runoff attributed to the development; off-site storm drain improvements may be required to satisfy this requirement. Any easement for drainage or flood control shall be improved as specified by the Director of Public Works.

L.    Storm drainage and sanitary sewer fees. Prior to the filing of a Final Map or Parcel Map, the subdivider shall pay any fees for defraying the actual or estimated costs of constructing planned drainage facilities for the removal of surface and storm waters from local or neighborhood drainage areas, or sanitary sewer facilities for local sanitary sewer areas established in compliance with Map Act Section 66483. This requirement shall not be applied until the City has established a master plan for the neighborhood or sanitary areas by ordinance.

M.    Water supply. Each approved parcel shall be served by the City’s water distribution system and shall be designed and constructed to accommodate both domestic and fire flows, together with necessary fire hydrants to serve each lot proposed to be created.

18.88.060 - Improvement Plans

After the approval of a Tentative Map, the subdivider shall diligently proceed to complete any subdivision improvements necessary to fulfill the conditions of approval. Before the construction of any improvements, the subdivider shall submit plans to the City as follows:

A.    Plan preparation and content. Improvement plans shall be prepared by a California registered civil engineer. Improvement plan submittals shall include the following information:

1.    Any drawings, specifications, calculations, design reports and other information required by the Director of Public Works;

2.    Grading, low impact design features, drainage, erosion and sediment control measures and a storm water pollution prevention plan (SWPPP) for the entire subdivision; and

3.    The payment of relevant fees required by the City Fee Schedule.

B.    Submittal of plans. Improvement plans shall be submitted to the Director of Public Works and other reviewing agencies for review and approval. Upon the approval of improvement plans in compliance with Subsection C. following, the subdivider shall also submit to the Director of Public Works a detailed cost estimate of all improvements, based on guidelines provided by the City.

C.    Review and approval. Improvement plans shall be reviewed and approved by the Director of Public Works, within the time limits provided by Map Act Section 66456.2.

D.    Effect of approval. The final approval of improvement plans shall generally be required before approval of a Parcel or Final Map. The approval of improvement plans shall not bind the City to accept the improvements nor waive any defects in the improvements as installed.

18.88.070 - Installation of Improvements

Subdivision improvements required as conditions of approval of a Tentative Map in compliance with this Chapter (see Section 18.88.050) shall be installed as provided by this Section.

A.    Timing of improvements. Required improvements shall be constructed or otherwise installed only after the approval of improvement plans in compliance with Section 18.88.060, and before the approval of a Parcel or Final Map in compliance with Sections 18.82.060 (Parcel Map Approval) or 18.82.100 (Final Map Approval), except where:

1.    Improvements are deferred in compliance with Section 18.88.080 (Improvement Agreements and Security); or

2.    Improvements are required as conditions on the approval of a subdivision of four or fewer lots, in which case construction of the improvements shall be required:

a.    When a Building Permit is issued for development of an affected parcel; or

b.    At the time the construction of the improvements is required in compliance with an agreement between the subdivider and the City, as set forth in Section 18.88.080 (Improvement Agreements and Security); or

c.    At the time set forth in a condition of approval, when the Review Authority finds that fulfillment of the construction requirements by that time is necessary for public health and safety, or because the required construction is a necessary prerequisite to the orderly development of the surrounding area.

3.    To avoid breaking up street paving, underground utility or service lines required to be installed as part of a subdivision and are planned to run across or underneath the right-of-way of any street or alley shall be installed prior to the preparation of subgrade and prior to the surfacing of any streets or alleys. In the event that the development of the subdivision requires the utility company to perform utility construction work, the developer shall pay a deposit satisfactory to the utility company within sufficient time to permit construction work to be performed prior to subgrade preparation. In no event shall subgrade preparation commence before installation of all necessary utilities and laterals.

B.    Inspection of Improvements. The construction and installation of required subdivision improvements shall occur as follows.

1.    Supervision. Before starting any work, the contractor engaged by the subdivider shall designate in writing an authorized representative who shall have the authority to represent and act for the contractor in contacts with the City. The designated representative shall be present at the work site at all times while work is in progress. At times when work is suspended, arrangements acceptable to the Director of Public Works shall be made for any emergency work that may be required.

2.    Inspection procedures.

a.    Inspections required. The Director of Public Works shall make any inspections as he/she deems necessary to ensure that all construction complies with the approved improvement plans. Where required by the Director of Public Works, the developer shall enter into an agreement with the City to pay the full cost of any contract inspection services determined to be necessary by the Director of Public Works.

b.    Access to site and materials. The Director of Public Works shall have access to the work site at all times during construction, and shall be furnished with every reasonable facility for verifying that the materials and workmanship are in accordance with the approved improvement plans.

c.    Authority for approval. The work done and all materials furnished shall be subject to the inspection and approval of the Director of Public Works. The inspection of the work or materials shall not relieve the contractor of any obligations to fulfill the work as prescribed.

d.    Improper work or materials. Work or materials not meeting the requirements of the approved plans and specifications may be rejected, regardless of whether the work or materials were previously inspected by the Director of Public Works. In the event that the Director of Public Works determines that subdivision improvements are not being constructed as required by the approved plans and specifications, he or she shall order the work stopped and shall inform the contractor of the reasons for stopping work and the corrective measures necessary to resume work. Any work done after issuance of a stop work order shall be a violation of this Chapter.

3.    Notification. The subdivider shall notify the Director of Public Works upon the completion of each stage of construction as outlined in this Chapter, and shall not proceed with further construction until authorized by the Director of Public Works.

18.88.080 - Improvement Agreements and Security

A subdivider may file a Parcel or Final Map before completion of all the improvements required by this Development Code and conditions of approval of the Tentative Map, only when the subdivider first obtains Council approval of a subdivision improvement agreement executed and submitted for Council review by the subdivider, and provides the City performance security as required by this Section. Improvement agreements and required security shall also comply with Chapter 5 of the Map Act.

A.    Contents of improvement agreement. A subdivision improvement agreement shall be submitted on the form provided by the City and approved by the City Attorney and shall include the following provisions:

1.    Description of improvements. A description of all improvements to be completed by the subdivider, with reference to the approved subdivision improvement plans;

2.    Time limit for construction. The period within which all required improvements will be completed to the satisfaction of the Director of Public Works;

3.    Completion by City. Provided that if the subdivider fails to complete all required improvements within the specified time, the City may elect to complete the improvements and recover the full cost and expenses thereof from the subdivider or the surety, including any attorney and legal fees associated with enforcement of the agreement; and

4.    Surety requirement. Require the subdivider to secure the agreement by furnishing security for full and faithful performance and to ensure payment to laborers and material suppliers, as specified in Subsection B. The amount of surety shall be based on an engineer’s cost estimate submitted by the subdivider and approved by the Director of Public Works. The total cost of improvements to be guaranteed shall be as provided in the approved engineer’s cost estimate.

B.    Security required to guarantee improvements. A subdivision improvement agreement or a subdivision road maintenance and repair agreement shall be secured by adequate surety in a form approved as to form and sufficiency by the City Attorney, as follows:

1.    Type of security. Improvement security shall be in the amount set forth or authorized in Map Act Section 66499.3.

a.    If the security is other than a bond or bonds furnished by a duly authorized corporate surety, an additional amount shall be included as determined by the Council as necessary to cover the cost and reasonable attorney’s fees, which may be incurred by the City in successfully enforcing the obligation secured.

b.    The security shall also secure the faithful performance of any changes or alterations in the work, to the extent that such changes or alterations do not exceed 10 percent of the original estimated cost of the improvement.

2.    Form of security. The required surety shall consist of one or more of the following forms selected by the Director of Public Works for the full amounts specified in Subsection B.1 above.

a.    A deposit, either with the local agency or a responsible escrow agent or trust company, at the option of the local agency, of money or negotiable bonds of the kind approved for securing deposits of public moneys;

b.    A bond or bonds executed by one or more duly authorized corporate sureties;

c.    An instrument of credit from an agency of the state, federal, or local government when any said agency provides at least 20 percent of the financing for the portion of the act or agreement requiring security, or from one or more financial institutions subject to regulation by the State or Federal government pledging that funds necessary to carry out the act or agreement are on deposit and guaranteed for payment; or a letter of credit issued by such a financial institution;

d.    A lien upon the property to be divided, created by contract between the owner and the City, where the Review Authority finds that it would not be in the public interest to require the installation of the required improvement sooner than two years after the recordation of the Map; or

e.    Any form of security, including security interests in real property, which is acceptable to the local agency.

C.    Time extensions. An extension of time for completion of improvements under a subdivision improvement agreement shall be granted by the Council only as follows:

1.    Public Works report. The Director of Public Works notifies the Council that either the subdivider is proceeding to do the work required with reasonable diligence or is not yet ready to develop the subdivision, and has given satisfactory evidence of being able and willing to complete all required work within the time of the requested extension.

2.    Agreement by sureties. The sureties agree in writing to extend for the additional period of time at the original amount of the bond or other surety, or if recommended by the Director of Public Works, at an increased amount.

3.    Council action. The Council approves the extension by at least a four-fifths vote. As a condition of granting a time extension, the Council may impose whatever additional requirements the Council deems reasonable to protect the public interest.

D.    Acceptance of improvements. Before acceptance for maintenance or final approval by the Council of subdivision improvements, the Director of Public Works shall verify that the improvement work has been completed in substantial compliance with the approved plans and specifications.

18.88.090 - Soils Reports

Soils reports shall be provided by the subdivider as required by this Section.

A.    Preliminary soils report. A preliminary soils report based upon adequate test borings and prepared by a registered civil engineer shall be required for every subdivision. The preliminary soils report shall be submitted with the Tentative Map application.

1.    Form of report. A preliminary soils report may be divided into two parts:

a.    Soils reconnaissance. The soils reconnaissance shall include a complete description of the site based on a field investigation of soils matters. The soils matters reviewed shall include stability, erosion, settlement, feasibility of construction of the proposed improvements, description of soils related hazards and problems and proposed methods of eliminating or reducing these hazards and problems; and

b.    Soils investigation and report. This investigation and report shall include field investigation and laboratory tests with detailed information and recommendations relative to all aspects of grading, filling and other earthwork, foundation design, pavement design and subsurface drainage.

The report shall also recommend any required corrective action for the purpose of preventing structural damage to subdivision improvements and the structures to be constructed on the lots. The report shall also recommend any special precautions required for erosion control, and the prevention of sedimentation or damage to off-site property.

If the preliminary soils report indicates the presence of critically expansive soils or other soils problems which, if not corrected, would lead to structural defects or environmental impacts, a subsequent soils investigation of each parcel in the subdivision may be required and shall be submitted to and approved by the Director of Public Works before approval of a Parcel or Final Map.

2.    Preliminary soils report waiver. The preliminary soils report may be waived if the Director of Public Works determines that existing available information on the qualities of the soils of the subdivision makes no preliminary analysis necessary.

B.    Final soils report. A final soils report prepared by a registered civil engineer shall be required where a preliminary soils report was required, unless the final report is waived by the Director of Public Works.

1.    Two copies of the final soils investigation and report shall be filed with the improvement plans.

2.    The report shall contain sufficient information to ensure compliance with all recommendations of the preliminary soils report and the specifications for the project.

3.    The report shall also contain information relative to soils conditions encountered which differed from that described in the preliminary soils reports, along with any corrections, additions or modifications not shown on the approved plans.

C.    Geologic investigation and report. If the Director of Public Works determines that conditions warrant, a geologic investigation and report may also be required.