§ 13. Preapproval agreement; contents.

Be it further ordained, etc., that before approval and acceptance of the plan by the planning commission and the mayor and city council, an agreement shall be entered into which will require, subject to such additional terms and conditions and such modifications as the planning commission or the mayor and city council shall approve, the following:

(a)

That the owner or subdivider shall construct the necessary streets and install the necessary drainage and utilities as determined by the planning commission and the mayor and city council, in accordance with such regulations and criteria as may be established from time to time by these municipal bodies.

(1)

Submission of final construction plans. The owner or subdivider shall submit two sets of construction plans to the city for review and approval, after the planning commission has approved the preliminary subdivision plans.

(2)

Expiration of approvals. In the event no development has been undertaken within one year from approval of construction plans, such approval will no longer be valid. In the event no final subdivision plan is submitted within one year from approval of a preliminary subdivision plan, such approval will no longer be valid.

(3)

Street widths. The minimum width for any street shall be 27 feet, as measured from back of curb to back of curb.

(4)

Street construction criteria. All streets shall be of the rollover curb-and-gutter type with subsurface drainage. All commercial and industrial streets shall be eight-inch portland cement concrete over a six-inch lime-stabilized subgrade. All other streets shall be 1½-inch hot mix asphalt over an eight-inch soil cement base or a six-inch crushed limestone base. Specifications governing all construction and materials shall conform to the latest revisions of pertinent standard specifications developed by the Parish of East Baton Rouge and City of Baton Rouge, Department of Public Works. These specifications are current, were developed for use in the general area, and are applicable to Port Allen.

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(5)

Drainage criteria. In all hydraulic calculations, an empirical run-off figure of 1.6 cubic feet per second (cfs) per acre of run-off area shall be used. A roughness coefficient (n) of 0.013 shall be used for concrete pipe and 0.020 shall be used for corrugated metal pipe. Except where limited headroom presents a problem, drainage pipe shall be reinforced concrete culvert pipe with gasket joints and in conformance with the aforementioned standard specifications. In cases of limited headroom, corrugated metal pipe or pipe arch may be used. Such pipe shall conform to the standard specifications with reference to gauge and coating. A minimum pipe diameter of 15 inches shall be used. Upon review and approval of the city engineer, other pipe materials may be substituted.

In the event the city so orders, due to hazards or difficult maintenance problems, open drainage ditches or canals may require concrete lining or enclosing. Pipe for enclosure shall conform to the requirements as set forth in the foregoing paragraph. Concrete lining shall consist of portland cement concrete, 1½ to one side slope, six-inch bottom, and four-inch side slope thickness, wire mesh reinforced, and conforming to the pertinent details of the standards adopted in the City of Baton Rouge, Parish of East Baton Rouge.

(6)

Water distribution system. All systems shall include provision for fire protection, with minimum eight-inch diameter mains for that part of the system provided with fire hydrants. All pipe, not part of the system provided with fire hydrants shall be minimum four-inch diameter. Pipe shall be Class 160, gasket-joint polyvinyl chloride (PVC), conforming to the latest specification C-900 of the American Water Works Association (AWWA). Upon review and approval of the city engineer, other pipe materials may be substituted. Details of valving shall meet the city's approval. Fire hydrants shall conform to the city standards. Tracer wire shall be laid in the pipe trench to aid in the recovery of the pipe.

The water distribution system shall be tested in accordance with AWWA Specification C-600. Tests shall be observed by the city engineer and shall meet with his approval.

(7)

Gas distribution system. All gas lines shall be polyethylene, butt-fused, conforming to the requirements of Plastic Pipe Institute rating of PE 2406 (medium density). Upon review and approval of the city engineer, other pipe material may be substituted. Tracer wire shall be laid in the pipe trench to aid in the recovery of the pipe. The completed system shall be air-tested at a pressure not less than 100 pounds per square inch (psi) for a period of 24 hours. Allowance shall be made for temperature corrections. Tests shall be observed by the city engineer and shall meet with his approval.

(8)

Sanitary sewer system. All sanitary sewer systems shall be reviewed for conformance with section 14 of the subdivision ordinance, shall meet the requirements of the Louisiana State Sanitary Code, and shall be reviewed and approved by the appropriate state agency governing such matters. The city must be advised of such approval by letter from the state agency before any sanitary sewer construction can be authorized.

Pipe for sanitary sewers shall be polyvinyl chloride (PVC) sanitary sewer pipe with gasket joints, and shall conform to Standard Specification for Polyvinyl Chloride (PVC) Ribbed Gravity Sewer Pipe and Fittings, ASTM Designation F-794, 1991 et seq. Upon review and approval of the city engineer, other pipe materials may be substituted. Collection lines shall be minimum eight-inch diameter. Service lines shall be minimum six-inch diameter. Sewer service lines shall be laid out to the street right-of-way line at which point they shall be plugged, if not intended for immediate use.

The completed sewer system shall be subjected to a light test, an infiltration test rated at 2,000 gallons maximum allowable infiltration per mile of sewer per day. A ball, slightly less than the sewer diameter, shall be floated through the system to check for any obstructions. The city engineer shall observe these tests and the completed and tested system shall require his approval.

(9)

On-site supervision. The owner or subdivider will be required to maintain a competent and qualified inspector on the construction site at all times during the construction of streets, drainage improvements, or utilities. The inspector shall be required to provide the city with weekly progress reports indicating the progress accomplished on the various items of construction, the equipment being used by the contractor, and the size of the contractor's labor force. The city will furnish a standard form as a guide for the preparation of these reports.

In addition to the owner's or subdivider's inspector, the city engineer will make weekly inspections of the work in progress and at greater intervals if, in his opinion, such weekly visits are not justified. Any questions or decisions required during construction, and involving an interpretation of the city regulations or criteria, will receive the attention of the city engineer, who will resolve such questions or make such decisions on behalf of the city. During actual construction of street improvements, the owner or subdivider may elect to retain the full services of an independent testing laboratory and reduce the requirement of a separate full-time inspector during this phase of the work.

(10)

Testing laboratory. The services of an independent testing laboratory will be required during street construction to establish and institute the necessary laboratory and field controls to assure compliance with the design and specification requirements. The routine testing of concrete used in drainage structures, curbs and gutters, and concrete streets will be required as well as the services aforementioned relative to street construction.

(11)

As-built drawings. The owner or subdivider shall furnish the city with two complete sets of prints indicating the "as-built" conditions of construction. This shall include location of water and gas mains, with valving noted and referenced to recoverable points; location, size, and invert elevations of sanitary sewers; location of all service wyes; location, size, and invert elevation of all storm sewers and drainage structures.

(12)

Bond in lieu of construction. In the event the owner or subdivider does not propose to undertake his construction of improvements immediately, he may furnish a surety bond in amount of 100 percent of the estimated cost of improvements construction, and guaranteeing the satisfactory construction of such improvements within a period of not more than two years from the date of such bond. Under this condition, the final plat of the subdivision could be approved, filed and lot sales could commence, upon the posting of such bond.

(13)

Maintenance bond. Upon satisfactory completion of all of the proposed construction improvements and final approval and acceptance by the city, the owner or subdivider shall file with the city a surety bond securing the city the satisfactory performance of the accepted improvements for a period of one year from date of bond. Amount of the bond shall be ten percent of the cost of the completed and accepted improvements. This is, in effect, a maintenance bond. For a period of one year from date of acceptance of the completed improvements, the owner or subdivider shall keep all backfilled trenches, pipes, manholes, drainage structures, streets, sidewalks, and such other improvements as he may have constructed, in good condition, making repairs to such defects in materials or workmanship as may develop or be discovered.

(14)

Subdivision construction permit fee. The owner or subdivider shall secure a subdivision construction permit prior to review of any construction plans. This permit will be issued after payment of a permit fee equal to one percent of the estimated construction cost of subdivision improvements, such estimate subject to review by the city. The funds secured from such permits will be used by the city to meet its obligations under the subdivision ordinance, will assure the owner or subdivider of providing the proper type of development construction to prospective buyers, and will assure the city that improvement accepted for maintenance by the city will not prove an unnecessary burden.

(b)

That the owner or subdivider shall retain a competent and qualified field inspector, who shall be maintained continuously at the site during all phases of the construction of sanitary sewers, storm sewers, water and gas mains, and streets.

(c)

That the owner or subdivider shall retain the services of an independent testing laboratory for the purpose of establishing the necessary laboratory and field controls during the construction of streets, as well as such other improvements as may require the mixing and placing of concrete.

(d)

That the owner or subdivider shall furnish weekly construction progress reports to the city.

(e)

That the owner or subdivider shall furnish the city with prints indicating construction improvements as-built.