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Government

NYC Parks Barretto Point Shoreline Restoration

Bronx, New York

Project Overview

MFS Consulting Engineers & Surveyor, DPC (MFS) provided professional land surveying services for the New York City Department of Parks and Recreation (NYC Parks) Barretto Point Shoreline Restoration Project in the borough of the Bronx, New York.

Bronx, New York

Project Details

In the absence of project control provided by the client, MFS established horizontal control in the field using GNSS RTK observations at a minimum of two primary control points. MFS also set and located additional control points using conventional traversing procedures. The horizontal control was tied to the appropriate State Plane Coordinate System NAD83, US Survey Feet, while the vertical datum was tied to NAVD88, either by a level run from known NGS Vertical benchmarks or GNSS RTK observations.

MFS performed a topographic field survey to locate the apparent accessible above-ground physical features, such as, but not limited to, buildings, curbs, edge of pavement, drives, striping, sidewalks, fences, walls, bulkhead, utility/light poles, signs, street trees, tree size (four inches or greater at breast height), and tree lines. Cross sections of paved surfaces were surveyed at a minimum of 50’ intervals and at low/high points. Spot elevations were obtained at a spacing sufficient to develop contours at an interval of one foot. Break line features such as top/bottom of curb, edge of pavement, top/bottom of slopes/swales/banks/walls were located. At waterways, the surveys extended to the edge of water at low tide.

MFS conducted a utility survey of accessible surface utilities and surface hardware within the project limits. These utilities included manholes, catch basins, trench drains, valve covers, utility/light poles, hydrants, conduit, wires, and other similar items. Additionally, MFS located any apparent utility mark-outs visible at the time of the field survey that were marked out by others. For storm drains and sanitary sewers, MFS obtained measurements to determine inverts and pipe sizes at accessible manholes and catch basins at street level. MFS surveyed any apparent sewers within the survey limits and located any apparent and accessible outfalls along the shoreline within the survey limits, as well as one associated upstream sewer structure, if accessible.

Subsurface utility lines, including water, gas, electric, and communication, were depicted based on surface features and available utility mapping. Depiction of subsurface utility lines was based on the location of surface hardware structures, record documents, and any mark-outs recovered. The utility lines and structures depicted on the survey plan were schematic in nature, with the assumption that the utility lines ran from center of structure to center of structure.

MFS performed a utility survey in accordance with Quality Level C as described in ASCE Standard 38-02, “Standard Guideline for the Collection and Depiction of Existing Subsurface Utility Data.” This meant that the utility data was obtained using non-destructive surface geophysical methods, supplemented by surveying and mapping methods as needed. The data collected had an accuracy range of plus or minus two feet horizontally and vertically.

Stats

  • Owner:
    New York City Department of Parks and Recreation (NYC Parks)

Services Provided

  • MFS provides land surveying services throughout the tri-state area, specializing in site surveying, boundary surveys, topographical surveys, and utility surveys. One of the top surveying companies in NJ, we have extensive experience in real estate, infrastructure, utility, transportation and more.