(A) Construction plans approved by the Public Works Engineer are required prior to commencing construction of proposed drainage improvements. Such plans shall be prepared and sealed by a Professional Civil Engineer, licensed to practice in the State of Arizona. The construction plans shall be submitted on 24" x 36" drawings, concurrently with the Final Drainage Report. The Public Works Engineer prior to issuance of a Grading Permit must approve final construction plans for the public and private improvements covered by the plans. Acceptance of the final construction plans by the town is a condition of issuing the Grading Permit. The plans and specifications for the drainage improvements will include, but are not limited to:
(1) Storm drain inlets, outlets and manholes with pertinent elevations, dimensions, type, and horizontal control indicated.
(2) Culverts, end-sections, and inlet/outlet protection, with dimensions, type, elevations, and horizontal control indicated.
(3) Channels, ditches, and swales (including side/rear yard swales) with lengths, widths, cross- sections, and erosion control (i.e. riprap, concrete, grout, vegetation) indicated.
(4) Check dams, channel drops, erosion-control facilities.
(5) Detention/retention pond grading, dikes, embankments, trickle channels, outlets, inlets, safety barriers, cross-sections and landscaping.
(6) Other drainage related structures and facilities (including under-drains and sump pump lines).
(7) Maintenance access considerations.
(8) Grading plans, and erosion and sedimentation control plans.
(9) Riprap gradation chart.
(10) Cross-section and detail sheets for all drainage facilities included in the development.
(B) The information required for the plans shall be in accordance with sound engineering principles, the drainage criteria included in this chapter, and the town requirements for subdivision design. Construction documents shall include geometric, dimensional, structural, foundation, lining, bedding, hydraulic, materials compaction requirements, landscaping, and other details as necessary to construct the storm water drainage facility. The accepted Final Drainage Report shall be included as part of the construction documents for all facilities affected by the drainage plan.
(Res. 1637, passed 2-28-02)