Res 2013-136/Approving an agreement with Halff Associates for the Sessom Drive phase II Improvement Project

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ATTACHMENT A PROPOSED SCOPE FOR PROFESSIONAL ENGINEERING SERVICES For The Sessom Drive Phase II Improvements Project San Marcos, Texas PROJECT DESCRIPTION The limits of the Sessom Drive Phase II Improvements Project are from Aquarena Springs Drive to N. Comanche Street. The purpose of the project is to improve the bicycle and pedestrian route along Sessom Drive to calm traffic and provide a safer route for pedestrians, and bicyclists. This project will include the preparation of engineering plans for intersection, traffic signal and bicycle /pedestrian improvements on Sessom Drive in San Marcos. The intersections included in the project are Sessom Drive at Aquarena Springs Drive and Sessom Drive at Peques Street. The design will also include improvements to pedestrian/bicycle elements on Sessom Drive between Aquarena Springs Drive and N. Comanche Street. The construction of the project is partially funded by CAMPO. The project is approximately 4,850 feet in length. Field surveying, utility location and coordination, design of intersection improvements, sidewalks, signing and striping, a prefabricated pedestrian bridge, traffic signal improvements, and traffic control plans are anticipated and described in more detail in the following TASK DESCRIPTION. TECHNICAL STANDARDS AND PROCEDURE ASSUMPTIONS • Microstation and/or Geopak computer applications will be used for all design and plan sheets produced on this project, as well as the following: • National Environmental Policy Act • Architectural Barriers, Texas Department of Licensing and Regulation • Americans with Disabilities Act (ADA) Regulations • Texas Department of Transportation Design Manual and American Association of State Highway and Transportation Official (AASHTO) Policy on Geometric Design of Highways and Streets (most current version) will be used as the design guidelines for this project. • AASHTO Guide for the Development of Bicycle Facilities, 4th Edition (2012) • Texas Department of Transportation Standard Specifications (2004) will be used as a basis for developing specifications. • Design of traffic control plans will conform to the version of the Texas Manual on Uniform Traffic Control Devices and Texas Department of Transportation Standards that is expected to be in effect at the proposed time of construction. • Environmental requirements per applicable jurisdiction: TCEQ, TxDOT, City of San Marcos, Texas Historical Commission, Hays County, EPA, US Fish and Wildlife Service, and USACE. • Drainage design will be per the requirements of the City of Austin Drainage Criteria Manual. • Low Impact Design (LID) shall be per the City of San Marcos guide.