Fire Island Stabilization Project - Survey and Mapping
Fire Island, NY
Suffolk County Department of Public Works
This project consisted of delivering forty one (41) Acquisition Maps and Four Hundred Twenty One (421) Permanent All Four Hundred Sixty Two (462) properties required “field” Land Surveying and the performance of “legal” research of record documents in order to determine the location, including possible conflicts, of these properties within the Blocks they are located and then followed with written legal description.
Hirani set twenty (20) pair of inter-visible 3-Dimensional “Primary” monument pairs along the approximately eighteen (18) miles of beach adjacent to where the Acquisition Parcels and Permanent Easements are situated. These points were 1.5” PK (Mag) Nails, #4 re-bars – minimum 18” in length or 2” x 2” x 18” wooden stakes with cup tacks. Points were tied down, labeled on field sketches and drawn in digital format for presentation upon the project plans. The GPS Primary Control was Order (C) 2-I in accordance with specifications contained in the Federal Geodetic Control Subcommittee (FGCS).
Subsequent “Secondary” Project Horizontal and Vertical Control, minimum 800 foot between, was performed by conventional land surveying techniques, utilizing a Leica TS15 (1”) Total Station, beginning & terminating on the Primary GPS Control. This Secondary Project Control was performed to include trigonometric height differences from point to point which were then used to confirm and / or adjust the GPS height differences resolved during the observations for the GPS Primary Control, approximately ninety five (95), were survey markers. The adjusted Horizontal and Vertical control values became the skeleton for all subsequent land surveying operations.
Hirani field located physical evidence, such as monuments, stakes, pipes, etc. in conjunction with research at both Suffolk County Land Records and SCDPW. We obtained all available surveys, maps, site plans and necessary deeds to determine a legitimate fit of the properties to the physical evidence.