Government Contract | Illinois
2016-2018 OBLIQUE AERIAL IMAGERY MISSION

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Bid Information


Bid Alert No: 00000419554

Bid Title: 2016-2018 OBLIQUE AERIAL IMAGERY MISSION

Agency Bid No. Title: 1590-14861

Received Date: 11/17/2015

Close Date: 12/18/2015

Purchase Type: Not Stated

Delivery Point: Chicago, Illinois

Delivery Date: Not Stated

Special Notices: Pre-Bid Conference Optional 12/01/2015 01:30 PM, Bidder Preregistration

Specifications

Specifications include, but are not limited to:The County first acquired oblique aerial imagery in 2007-8 in order to take advantage of the developingtechnologies of the period. Although oblique aerial photography has been long used in variouscapacities, by its nature, has major limitations for use in highly accurate mapping, especially comparedto orthoimagery. But with the advent of digital imagery and its integration with GPS and GIS, thisproduct can support general mapping and planning tasks with acceptable accuracy and reliability,although it cannot replace current orthoimagery for updates to the enterprise GIS data layers.Various agencies can use oblique imagery for general planning activities and as support or substitute forfield work, which reduces associated costs. The public use of obliques is well-documented and isnormally preferred by a spectrum of users to vertical aerial images, particularly at large-scale displaybecause buildings and other features are more recognizable and, consequently, more intuitive and likelyto be utilized.The most recent mission by the County was conducted between 2010 and 2013 to compile obliqueimagery for the entire County. The delivered product is natural color average six-inch (6) groundsample distance (GSD) digital imagery. The standard delivered file format is JPEG with a standardnaming format to include date stamping. The County maintains all of its geospatial data according tothe Illinois State Plane, Eastern Zone (Zone 3776), NAD83 (NSRS2007), U.S. survey feet coordinatesystem. Elevation values utilize the NAVD88 datum as the County standard.

Product Codes: 90510, 92033

Agency Information


Issuing Agency: County of Cook

State: Illinois

Agency Type: State and Local

Contact: Tangela Malloy 118 N. Clark St., Room 1018, Chicago, Illinois, 60602

Phone: 312-603-6827

Fax: 312-603-3179

Email: tangela.malloy@cookcountyil.gov

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