Cook County Board of Commissioners 200912 vector digital data withheld RailStation This file is a digital geospatial Environmental Systems Research Institute (ESRI) ArcGIS feature class that contains point features of Cook County ("County") railroad stations in Cook County, Illinois. This feature class locates and describes a11 railroad stations in the County and includes the name of the commuter agency and the railroad station name. The location of a railroad station is predominantly defined by the centroid of what is interpreted to be the main building associated with the rail station. In the absence of a building, the location is defined by the midpoint along a station platform. This feature class is current as of December 2009. Railroad station feature data was mostly collected from 1998 aerial photography for all of Cook County, Illinois. In December 2009, fifteen additional railroad station features were added with the assistance of 2006-2008 digital oblique imagery of Cook County, Illinois. This dataset is projected using the Transverse Mercator map projection. The grid coordinate system used is the Illinois State Plane Coordinate System (Zone Number 1201), NAD83 with ground coordinates expressed in U.S. Survey Feet. Purpose: The purpose of the feature class is to describe and locate County facilities in Cook, County, Illinois for general use by the public and to support internal business requirements of several County agencies. This dataset was also created to enhance an existing enterprise-wide GIS database that supports current and proposed applications involving executive decision and policy development, public access, land records management, planimetric mapping, infrastructure management, economic development, engineering, map production, and various land data analyses. This feature data set was originally developed as an ArcInfo coverage and was later converted to an ArcGIS geodatabase. The current data format, as used by the Cook County government, is a geodatabase. For information regarding available distribution formats, please contact the individual listed as the Contact_Person in the Distribution_Information section of this metadata document. Railroad stations were collected as point features centered on each commuter station, and given attributes of commuter status and station name. The attribute information sources included the Cook County Highway Department, the IDOT Bureau of Railroads, Metra, the Chicago Transit Authority (CTA), Amtrak, and the Regional Transit Authority (RTA). en 1998 200912 REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground. publication date Complete As-needed -88.184948 -87.510096 42.154097 41.484600 1024905.125250 1207486.657250 1755836.000000 1998779.907500 None Rail Station Rail Stations Railroad Station Railroad Stations Platforms Train Stations Metadata Service Theme Categories Facilities and structures Off-line data U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (FIPS 5-2): Washington, DC, National Institute of Standards and Technology. Illinois Illinois Compiled Statutes, 70 ILCS 1705, State of Illinois, 1994 northeastern Illinois "Geographic Identification Code Scheme (PHC80-R5)." 1980 Census of Population and Housing, Bureau of the Census, U.S. Department of Commerce, April 1983. Cook County Access to this feature dataset is available to county and municipal agencies. Editing privileges are restricted to authorized GIS staff members or its designees. Under no circumstances may the data be redistributed or made available over a network without explicit permission from Cook County. It is required that Cook County be cited in any products generated from the data. The following source citation must be included: "Cook County Metadata of Various GIS Layers Project (Contract No. 09-41-326), 2009 Railroad Stations in Cook County, Illinois. Geodatabase Vector Digital Data, Version 1.0. Published June 2010." Cook County Bureau of Technology Alan Hobscheid GIS Manager, Department of Geographic Information Systems mailing and physical address

69 W. Washington Street

Room 2700

Chicago Illinois 60602 USA 312-603-1399 312-603-9713 ahobscheid@cookcountygov.com 09:00 - 17:00, Central Time Zone, Monday - Friday, except holidays Please contact during normal business hours. ESRI, Cook County Highway Department, the IDOT Bureau of Railroads, Metra, the Chicago Transit Authority (CTA), Amtrak, and the Regional Transit Authority (RTA). ESRI ArcCatalog 9.3.1.4000 Feature Class For the original dataset, the attributes in this data set are estimated to have very good accuracy, to a contract-specified level of 98% accuracy. This data set and its attributes were subjected to extensive quality control checks, both automated and manual/visual, throughout its development. The QC was performed by the vendor(s) creating the data set, while the final quality inspection and approval of the data set was performed by staff of Cook County. For the December 2009 update, repeated usage and inspection of the data have produced results (attributes) that are assessed to be highly accurate. Features are stored in high precision, using ESRI ARCGIS 9.2 software, as an SDE geodatabase. This GIS dataset does not have topology rules in effect. This feature class locates and describes all railroad stations in Cook County, Illinois as of December 2009. The original feature class met National Map Accuracy Standards for 1"=100' data products, and held an absolute positional accuracy of 2.5 feet (0.7625 meters). This data set was checked for positional accuracy against the 1998 Cook County 1:1200-scale digital orthophotos. Additionally, this data set was subjected to numerous vendor automatic and manual quality control checks to ensure the positional accuracy of the data set throughout the processing. Later, 2006-2008 Cook County Aerial Oblique & Ground Imagery was used to updated this feature class. Since only fifteen (15) rail stations were added using the 2006-2008 Cook County Aerial Oblique & Ground Imagery, the horizontal positional accuracy report associated with the original feature class remains substantially relevant. 0.7625 National Map Accuracy Standards Cook County Board of Commissioners 1998 1.0 remote-sensing image Chicago, Illinois Cook County Board of Commissioners 1200 stable-base material 19980417 19980418 19980419 19980423 ground condition Cook County 1998 1:1200-scale Black and White Aerial Photography Provided principal base for planimetric stereocompilation of data set. City of Chicago, Geographic Information Systems Department 2010 200908 vector digital data Chicago, Illinois City of Chicago, Geographic Information Systems Department withheld unknown Online 200908 Publication date City of Chicago, GIS Department, Metra Lines and Stations Reference layer used during the update of this feature class. Cook County Board of Commissioners 2008 1.0 raster digital data Chicago, Illinois Cook County Board of Commissioners withheld Not applicable Cook County Network 200609 200805 Ground condition Cook County Aerial Oblique & Ground Imagery Project 2006-2008 Reference layer used during the update of this feature class. City of Chicago, Geographic Information Systems Department 2010 2010 vector digital data Chicago, Illinois City of Chicago, Geographic Information Systems Department withheld unknown Online unknown Publication date City of Chicago, GIS Department, CTA Stations Reference layer used during the update of this feature class. Metra 2009 2010 document Chicago, Illinois Metra withheld Online unknown Publication date Metra Rail lines and Stations Reference layer used during the update of this feature class. Perform Model Orientation Merrick & Company (Merrick) was contracted for photogrammetric compilation of planimetric data. Merrick performed internal relative and absolute positioning of each aerial photograph (1998_Aerial_Photos) using a least-squares analysis. The photogrammetric supervisor inspected all residuals to ensure that they conform to accuracy standards for 1" = 100' mapping. Photogrammetrically Collect Planimetric Data Planimetry for all of the feature-type coverages was digitized concurrently. Merrick utilized CADMAP photogrammetric software for real-time planimetric data acquisition and coding from the Oriented_1998_Aerial_Photos. To populate attributes, each planimetric entity was collected by entering a unique identification number, thus enabling a CADMAP Collection Macro. The macro specified graphic collection parameters (i.e., building squaring, polygon closure, and 2-D or 3-D coordinates). Each model was edgematched during stereo-digitizing to form a continuous database. Data Merge and Quality Control Merrick merged the All_Planimetric_Data into a specified delivery area. Then, the Quality Control/Edit team performed a quality inspection of the data to ensure feature completeness and attribute conformity. Conversion to ArcInfo Merrick converted the QC_Planimetric_Data from a *.dgn format into separate ArcInfo coverages for each feature type by using ARCIGDS software tools to create separate planimetric coverages (Feature_Planimetric_Data). Each of the Feature_Planimetric_Data was verified for completeness before moving on to the next process step. Internal Quality Inspection/Quality Control A series of manual and automatic quality control procedures were performed on each of the Feature_Planimetric_Data both throughout their creation and prior to their final approval. Each feature type was inspected for the following items: edgematching of homogenous features that span tiles; undershoots and overshoots; cartographic quality; line smoothness and zero-length line segments; linear connectivity; closure of polygonal features; node and vertex quality; verification of consistent label and line attributes; inspection of building squaring; cartographic placement; and graphic comparison of data to the source documents. The automatic quality control checks included: automated inventory and validation of all coverages; automated plot generation; validation of State Plane Coordinate System zone and double-precision coordinates; interactive inspection of data, maps, and production reports; conformance to file naming convention; validation of line attributes (where applicable); validation of network topology of linear features (where applicable); and validation of correct annotation characteristics. Independent Quality Control ESRI performed an independent quality review of the planimetric data coverages, including automated checks with QCView, and on-screen review of data using 1998_Digital_Orthophotos as background, etc. Convert to ArcGIS 8.2 Geodatabase ESRI developed a coverage-to-geodatabase conversion module and converted the completed planimetric data (Independent_QC_Planimetric_Coverages) from ArcInfo coverage format to ArcGIS geodatabase format. ESRI then validated the conversion by reviewing the conversion statistics and checking the data within the geodatabase to ensure that no data was lost or corrupted. withheld 2002 withheld Cook County Bureau of Technology Alan Hobscheid GIS Manager, Department of Geographic Information Systems mailing and physical address

69 W. Washington Street

Room 2700

Chicago Illinois 60602 USA 312-603-1399 312-603-9713 ahobscheid@cookcountygov.com 09:00 - 17:00, Central Time Zone, Monday - Friday, except holidays Please contact during normal business hours. Separation of Lines (rail lines) From Point (Railroad station) Features The railroad station point features were selected and exported from the Railroad feature data layer for storage in their own point-based feature class. Update of Rail Stations. In December 2009, an initiative was begun to update this feature class. Certain GIS, online, and hardcopy references were used to facilitate the update this feature class. Those references included: 1. City of Chicago, GIS Department, Metra Lines and Stations 2. Cook County Aerial Oblique & Ground Imagery Project 2006-2008 3. City of Chicago, GIS Department, CTA Stations 4. Metra Rail lines and Stations Working systematically, and with the assistance of the aforementioned reference layers, the GIS technician attempted to identify potentially new features shown in the 2006-2008 Cook County Aerial Oblique & Ground Imagery. When a candidate was positively identified in the imagery, a point was added to the feature class. In general, a point was created and positioned in a location that was judged to be the centroid of a main building interpreted as being associated with the rail station. When no building was identifiable in the imagery, a point was created and positioned at a point that was judged by the GIS technician as being the midpoint along the length of a rail station platform. In instances when a reference layer located a rail station that was below grade, i.e., underground, then a point was created and "snapped" to the point of the reference layer. Each newly created point was attributed with the name of the commuter agency that provided service to the rail station and name of the rail station. In total, fifteen (15) additional rail station features were added to this feature class. New and existing Name values were updated, where necessary, according to the following business rules: 1. If the Name of a rail station was unique and it was served by one "line" of a single commuter agency, then no change to Name value. (Example: CTA rail station "Bryn Mawr" is only served by the CTA Red Line) 2. If the Name of a rail station was unique, and it was served by more than one "line" of a single commuter agency, then change Name value to "MULTI" (Example: CTA rail station "Merchandise Mart" is served by CTA Brown and Purple lines.) 3. If the Name of a rail station was not unique, and it was served by one "line" of more than one commuter agency, then apply a suffix descriptor. (Example: CTA and Metra both have rail stations named "Davis", they became "Davis Purple" and "Davis St - UPN", respectively. 4. If the Name of a rail station was not unique, and it was served by one "line" of a single commuter, then make the Name value unique using a cross street. withheld withheld Cook County Bureau of Technology Alan Hobscheid GIS Manager, Department of Geographic Information Systems mailing and physical address

69 W. Washington Street

Room 2700

Chicago Illinois 60602 USA 312-603-1399 312-603-9713 ahobscheid@cookcountygov.com 09:00 - 17:00, Central Time Zone, Monday - Friday, except holidays Please contact during normal business hours. Metadata imported. withheld 20120201 11031600 0 Cook County, Illinois Vector Simple FALSE 311 TRUE FALSE coordinate pair 0.000250 0.000250 survey feet North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 NAD_1983_StatePlane_Illinois_East_FIPS_1201_Feet Explicit elevation coordinate included with horizontal coordinates 1.000000 This dataset contains a point feature class that represents railroad stations in Cook County, Illinois. In addition to automatically generated fields and associated attributes, notable attribution of the feature class includes: Commuter agency Railroad station name The data dictionary in the Entity_and_Attribute_Detail_Citation section of this metadata report should be consulted for a comprehensive description. Cook County Metadata of Various GIS Layers Project (Contract No. 09-41-326), 2009 Railroad Stations in Cook County, Illinois. Geodatabase Vector Digital Data, Version 1.0. Published June 2010. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> > Source: Cook County Board of Commissioners > Format: Data stored in ESRI ArcGIS 9.2 > Data Dictionary: Railroad Stations > Feature Class Name: RailStation > Feature Class Maintained: Point Feature Class > >--------------------------------------------------------------------- > > Attribute Label Attribute Definition Attribute Type > Lth Type > OBJECTID Internal feature number ObID > SHAPE Feature geometry Geo > COMM_STATUS Commuter agency Text > NAME Railroad station name 50 Text > ANGLE Db > > Key: Lth= Length Type: Db= Double > Prec= Precision ObID= Object ID > Geo= Geometry > > OBJECTID > Attribute Definition: Sequential unique whole numbers that are > automatically generated. > Attribute Definition Source: ESRI > Attribute Domain Values: > Range Domain: OBJECTID 1 to 311 > > SHAPE > Attribute Definition: Feature geometry > Attribute Definition Source: ESRI > Attribute Domain Values: > Enumerated Domain: SHAPE = "Point" > > COMM_STATUS > Attribute Definition: Commuter agency. > Attribute Definition Source: CCHD, Regional Transit Authority (RTA) > Attribute Domain Values: > Enumerated Domain: COMM_STATUS "1" = Metra > "2" = Chicago Transit Authority (CTA) > "3" = Metra and Amtrak > "4" = Amtrak > "5" = Chicago Transit Authority (CTA) > Underground > "6" = Metra Underground > > NAME > Attribute Definition: Name of station maintained by Chicago Transit Authority, Amtrak, and Metra. > Attribute Definition Source: CCHD, Regional Transit Authority (RTA) > Attribute Domain Values: > Enumerated Domain: > > ANGLE > Attribute Definition: Specification of the angle of rotation of the > annotation. > Attribute Definition Source: ESRI > Attribute Domain Values: > Range Domain: RailStation Feature Class 311 OBJECTID OBJECTID OID 4 10 0 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. COMM_STATUS COMM_STATUS SmallInteger 2 5 0 NAME NAME String 50 0 0 ANGLE ANGLE Double 8 38 8 Commute_Line Commute_Line String 100 0 0 Shape Shape Geometry 4 0 0 Feature geometry. ESRI Coordinates defining the features. OrthoYear OrthoYear String 4 0 0 GlobalID GlobalID GlobalID 38 0 0 created_user created_user String 255 0 0 created_date created_date Date 8 0 0 last_edited_user last_edited_user String 255 0 0 last_edited_date last_edited_date Date 8 0 0 Cook County Bureau of Technology Alan Hobscheid GIS Manager, Department of Geographic Information Systems mailing and physical address

69 W. Washington Street

Room 2700

Chicago Illinois 60602 USA 312-603-1399 312-603-9713 ahobscheid@cookcountygov.com 09:00 - 17:00, Central Time Zone, Monday - Friday, except holidays Please contact during normal business hours. Cook County Metadata of Various GIS Layers Project (Contract No. 09-41-326), 2009 Railroad Stations in Cook County, Illinois. Geodatabase Vector Digital Data, Version 1.0. Published June 2010. Cook County Government Department of Geographic Information Systems GIS Maps/Data Disclaimer: All Cook County Government (Cook County) geospatial data and maps are copyrighted. By providing you with a copy of Cook County generated maps and geospatial data, via hardcopy, electronic media or online access, you are not entitled to repackage, resell or distribute this information without the written permission of the Cook County Board of Commissioners. While efforts have been made to be as accurate as possible, Cook County provides the data for your personal use "as is". The data is not guaranteed to be accurate, correct, or complete. Information provided should not be used as a substitute for legal, business, tax, or other professional advice. The viewer should contact appropriate regulating agencies to determine accuracy or suitability of the data for a particular use. Cook County, nor its staff, assume no liability whatsoever for any losses that might occur from the use, misuse, or inability to use its geospatial data, metadata, maps or websites. By making this information available, Cook County assumes no obligation to assist the user in interpreting, browsing or using the data, metadata, maps or any application. All material appearing on the web site, any form of electronic transmission and printed hardcopy is provided and transmitted without warranty of any kind and are subject to the terms on this disclaimer. ArcGIS 9.2 ESRI Point Feature Class This dataset contains one (1) feature class. No compression applied 1 CD-ROM 750 Megabytes DOS-Copy Accessible on any computer capable of reading a CD-ROM Order dependent. Call the individual listed as the Contact_Person in the Distribution_Information section of this metadata record to find out how to obtain this data set, the available formats, the available transfer media, compatibility, etc. This person will also be able to provide information about the fees associated with obtaining the data set. Format compatibility is the user's responsibility. 201006 unknown 20120201 Mike Hoather Sub-contractor to Cook County Board of Commissioners. mailing and/ physical

225 W. Huron Street, #516

Chicago Illinois 60654 773-251-4678 mhoather@live.com REQUIRED: The person responsible for the metadata information. REQUIRED: The organization responsible for the metadata information. FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile en 20201124 15343800 FALSE 20180417 13382300 20180417 13382300 RailStation 002 1024905.125250 1207486.657250 1755836.000000 1998779.907500 1 Projected GCS_North_American_1983 Linear Unit: Foot_US (0.304801) NAD_1983_StatePlane_Illinois_East_FIPS_1201_Feet <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.4'><WKT>PROJCS[&quot;NAD_1983_StatePlane_Illinois_East_FIPS_1201_Feet&quot;,GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Transverse_Mercator&quot;],PARAMETER[&quot;False_Easting&quot;,984250.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-88.33333333333333],PARAMETER[&quot;Scale_Factor&quot;,0.999975],PARAMETER[&quot;Latitude_Of_Origin&quot;,36.66666666666666],UNIT[&quot;Foot_US&quot;,0.3048006096012192],AUTHORITY[&quot;EPSG&quot;,3435]]</WKT><XOrigin>-17463800</XOrigin><YOrigin>-46132600</YOrigin><XYScale>4000</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.002</XYTolerance><ZTolerance>2</ZTolerance><MTolerance>2</MTolerance><HighPrecision>true</HighPrecision><WKID>102671</WKID><LatestWKID>3435</LatestWKID></ProjectedCoordinateSystem> 1.0 Version 6.2 (Build 9200) ; Esri ArcGIS 10.4.1.5686 RailStation 1024905.12525 1207486.65725 1998779.9075 1755836 1 -88.184948 -87.510096 42.154097 41.4846 1 1 -88.184948 -87.510096 42.154097 41.484600 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset 002 withheld Feature Class Feature Class NAD_1983_StatePlane_Illinois_East_FIPS_1201_Feet EPSG 6.12(9.3.0.0) 311 20180417