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DRAINAGE IMPROVEMENTS Prior to finalizing the subdivision plat, submittal of an engineered drainage report is required for review and approval. Through this report, the project engineer provides a conceptual design of the drainage system proposed to service the development and which complies with the City’s drainage policy as well as Federal Emergency Management Agency (FEMA) requirements. Please refer to the COM Engineering Department’s Drainage Report Checklist. TRAFFIC IMPACT ANALYSIS The Traffic Impact Analysis (TIA) policy applies to new development, changes to existing development, and conditional use permits. The TIA shall assist the City of McAllen staff in assessing the roadway system’s ability to serve the development. All Traffic Impact Analyses performed under this policy shall be conducted under the direction of a registered/licensed professional engineer. The final report shall be signed and sealed by the registered professional engineer responsible for the document. Not all developments will require a TIA. In order to determine if a development will require a TIA, a Trip Generation Worksheet must be submitted prior to obtaining a final with the Planning and Zoning Commission. The Trip Generation Worksheet is based on the specific site use and calculated using the latest addition of the Institute of Transportation Engineers (ITE) Trip Generation Manual. The purpose of the Trip Generation Worksheet is to calculate the peak hour trips generated by the proposed subdivision. The findings of the Trip Generation Worksheet assist the City of McAllen in determining whether a TIA is required. A TIA is a more thorough study of the proposed development and the surrounding areas. It includes information that discusses the trip generation rates, trip distribution rates, access management analysis, level of service evaluation for roadways and intersections, and other proposed improvements or recommendations for maintaining the existing roadway network operations. CONSTRUCTION Final plat approval from the Planning and Zoning Commission allows the developer to proceed to the construction stage of development. The project engineer submits construction plans of the proposed subdivision improvements for review by our department, in coordination with the Utilities Department. All construction plans for the proposed subdivision infrastructure must follow the Engineering Department’s Infrastructure Construction Committee Plan Review Checklist. A pre-construction meeting may be scheduled once construction plans have been approved. In order to obtain a notice to proceed, the developer must submit a 3.5% construction material testing fee. INSPECTION Daily site inspections are conducted and documented by the designated Engineering Inspector, who also coordinates all construction material testing for the site. Once the contractor has completed all infrastructure improvements, including testing, a final walk-thru is scheduled. Any deficiencies noted during the walk-thru must be addressed by the contractor, and inspected by the Engineering Inspector until approved. The City of McAllen Engineering Department’s final acceptance of the subdivision improvements releases the subdivision plat for recording.
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