|
Docusign Envelope ID: BB27E2CA-90E7-44DF-ACD6-60284C2E92F6 `XHIBIT 1
<br /> ATTACHMENT A
<br /> CITY OF SAN MARCOS
<br /> WALLACE ADDITION SUBDIVISION IMPROVEMENTS
<br /> SCOPE OF SERVICES
<br /> Project Understanding
<br /> The work to be performed by Tetra Tech, Inc. (the Consultant) under this contract will consist of
<br /> providing Preliminary Design, Design Phase (60%, 90%, 99%, 100% Documents), and Bid and
<br /> Construction Phase Services for the Wallace Addition Subdivision Improvements. The project
<br /> consists of replacing potable water main and sanitary sewer pipelines along Staples, Juarez,
<br /> Monterey, Luciano Flores, Durango, Saltillo, Laredo, and Tampico streets. Approximately
<br /> 13,700 linear feet (LF) potable water pipelines and 9,800 LF of sanitary sewer lines are to be
<br /> replaced in the project. The proposed diameter of water and sewer lines will range from 8 to 12-
<br /> inches. The preliminary design phase will also evaluate drainage, street, and sidewalk
<br /> improvements needed in the subdivision. Available funds will dictate which improvements will be
<br /> included in subsequent phases of the project.
<br /> Basic Scope of Services
<br /> I. General
<br /> A. Data Collection/Review: The City has a lot of relevant information (Geotech, surveying and
<br /> Subsurface Utility Engineering (SUE) which will be provided to the Consultant as part of existing
<br /> data. After reviewing the data, the Consultant will prepare a Data Request from the City prior to the
<br /> initial Project Coordination Meeting. The Consultant will review the pertinent documentation to
<br /> inform subsequent project evaluations.
<br /> B. Topographic and Tree Survey: During the Preliminary Engineering Phase, the Consultant will have
<br /> McCray and McCray prepare any additional topographic and tree survey within the public right of
<br /> way (ROW) and utility easement, as shown in the attached exhibits (Exhibits A, B, and C). The
<br /> Consultant will prepare an electronic map showing the following:
<br /> a. Horizontal Control: The survey will be provided in Texas State Plane, South Central
<br /> Zone, NAD 83, Grid coordinates with a note defining the Grid to Surface Scale factor.
<br /> b. Vertical Control: Elevations will be obtained using NAVD 88, Central Zone, EPOCH
<br /> 2010.00, Geoid 2018 and at least three (3) benchmarks will be established onsite, and
<br /> descriptions will be provided on the drawing.
<br /> c. Full topography with enough detail to prepare 1' contours for the project area as identified
<br /> in Exhibit A, including portions of Staples Road, Tampico Street, Juarez Avenue, Laredo
<br /> Street, Saltillo Street, Durango Street, Cape Road, Monterrey Street and Luciano Flores
<br /> Boulevard.
<br /> d. Locate and identify all above ground features within the survey limits including buildings,
<br /> fences, sidewalks, driveways, handicap ramps, guardrails, signs, visible utilities including
<br /> manholes, water meters, top of nut of water and gas valves, telecom boxes, utility poles
<br /> and mailboxes.
<br /> e. Invert elevations of manholes, drainage pipes and culverts shall be identified along with
<br /> size/type of the pipes.
<br /> f. Locate and identify types of existing pavement surfaces for streets, sidewalks and
<br /> driveways.
<br /> g. Existing conditions survey to include boundary information and ROW and easement limits
<br /> within project area. Identify all visible and above grade utilities, and manholes with invert
<br /> elevations and tied to existing control points/City benchmarks (if any).
<br /> h. Underground site utilities will be located by Dig-Tess only.
<br /> i. Existing trees, size and type (at minimum caliper inches required by City CIP)—24" and
<br /> above caliper for Native Oaks, Elms, Madrone, and Pecan, Celtis Occidentalis
<br /> (Hackberry), Juniperus Virginiana, Juniperus Ashei (Common Cedar), Chinaberry,
<br /> 1
<br />
|