Cook County Board of Commissioners 201005 1.0 vector digital data Chicago, Illinois Cook County Board of Commissioners withheld This file is a digital geospatial Environmental Systems Research Institute (ESRI) ArcGIS Version 9.2 feature class (simple feature type) dataset type with a polyline geometry displaying 1-foot contours for Cook County, Illinois. The 1-foot contours were interpolated from a Digital Terrain Model (DTM) that was created during 2009, for the Cook County Board of Commissioners, by the engineering firm, Merrick & Company (Merrick). (See "Cross Reference" in the Identification Information section of this metadata report for full citation information.) The 1-foot contours cover the extent of the Cook County corporate limits, plus a buffer of an additional three hundred feet (300'). The 1-foot contours described in this feature class reflect ground conditions on specific dates during 2008 and 2009. Those dates, which are associated with a data collection mission using a Light Detection and Ranging (LiDAR) system, are as follows: November 21-23, 25, 26, 28, 29, 2008; April 11-14 2009. This dataset meets National Map Accuracy Standards (NMAS) for 1:1,200 (1"=100') scale mapping and 1' contours. This dataset is projected using the Transverse Mercator map projection. The grid coordinate system used is the Illinois State Plane Coordinate System, East Zone (Zone Number Zone 3776, FIPS 1201), NAD83/97 HARN (horizontal datum), NAVD88 (vertical datum), with ground coordinates expressed in U.S. Survey Feet. This dataset was 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. The metadata for this data set is one (1) of a series of three (3) reports. In addition to metadata for the contours (topography), metadata exists for the DTM and control points. MARS (Merrick Advanced Remote Sensing) is a registered trademark of Merrick & Company. 20081121 20081122 20081123 20081125 20081126 20081128 20081129 20090411 20090412 20090413 20090414 Ground condition Complete Unknown -88.266747 -87.510003 42.157523 41.461724 None Contours 1-foot contours One-foot contours Contour database Contours database Relief map Topography Topographic database Metadata Service Theme Categories Elevation and derived products Offline 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 None Chicago 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 the Cook County Department of Office Technology. It is required that the Cook County Board of Commissioners be cited in any products generated from the data. The following source citation must be included: "Source: Cook County 2008 LiDAR and Topographic Data Services (Contract No. 08-41-342), 1-Foot Contours for Cook County, Illinois. Geodatabase Vector Digital Data, Version 1.0. Published: May 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. Merrick and Pro-West & Associates. Cook County Board of Commissioners 2001005 1.0 model Chicago, Illinois Cook County Board of Commissioners withheld Merrick and Pro-West & Associates performed quality inspections that included a combination of data plotting, manual examination, and automated verification checks. Specifically, attribute accuracy was supported through automated validation of attributes and data ranges, and visual inspection. Data are topologically correct using ArcGIS version 9.2. The following rules apply: > 1) Must not have dangles > 2) Must not self overlap > 3) Must not self intersect > 4) Must not overlap > 5) Must not intersect This feature class of 1-foot contours offers complete coverage of Cook County, Illinois, including a 300 foot buffer around the county boundary. The 1-foot contours were generated from LiDAR data that was captured between November 21, 2008 and April 14, 2009. The description of ground conditions, using 1-foot contours, has been completed using 8 subtypes that are members of a domain called "d_contour_type." > The subtypes are: > > "Index Contours" Attribution of every fifth contour (multiples of > five-feet). > > "Intermediate Contours" Contours that lay between each Index > contour. > > "Index Depression Contours" Every fifth contour (multiples of > five-feet) located in areas of lower elevation. > > "Intermediate Depression Contours" Contours that lay between each > Index Depression contour. > > "Index Obscured Contours" Every fifth contour (multiples of five-feet) > that intersects with previously captured areas of dense vegetation, > dark shadows, etc. > > "Intermediate Obscured Contours" Contours that lay between each > Index Obscured contour. > > "Index Depression Obscured Contours" Every fifth contour (multiples > of five-feet) located in areas of lower elevation that intersects > with previously captured areas of dense vegetation, dark shadows, > etc. > > "Intermediate Depression Obscured Contours" Contours that lay > between each Index Depression Obscured contour located in areas of > lower elevation that intersects with previously captured areas of > dense vegetation, dark shadows, etc. The final contours meet National Map Accuracy Standards (NMAS) for 1:1,200 (1"=100') scale mapping and 1' contours. 1.014984 meters (3.33 feet) National Map Accuracy Standards (NMAS) The final contours meet National Map Accuracy Standards (NMAS) for 1:1,200 (1"=100') scale mapping and 1' contours. 0.15240 meters (0.5 feet) National Map Accuracy Standards (NMAS) Cook County Board of Commissioners 201005 1.0 vector digital data Chicago, Illinois Cook County Board of Commissioners withheld Disc 20081121 20081122 20081123 20081125 20081126 20081128 20081129 20090411 20090412 20090413 20090414 COOK_COUNTY_DTM_2010 The Digital Terrain Model was the primary data file used to generate contours using contour interpolation software (CIP). Cook County Board of Commissioners 200904 1.0 vector digital data Chicago, Illinois Cook County Board of Commissioners 1200 Disc 200811 200904 Ground condition COOK_OBSCURED_2009 Input GIS dataset used to derive "Obscured" contour types. CONTOUR GENERATION AND PREPARATION OF GEODATABASES FOR DELIVERY TO PRO-WEST & ASSOCIATES (PWA) Merrick performed contour interpolation using the Cook County DTM. Using MARS (Merrick Advanced Remote Sensing) software, a DTM was created from ground LiDAR points and breakline points. ESRI contour shape files are created using a 2,500 foot by 2,500 foot tile scheme. The shape files are merged together to create an ESRI version 9.2 contours_1ft feature class. Feature classes were organized into geodatabases on a Township-by-Township basis. There were a total of 33 Townships prepared for delivery to PWA. The following topology rules were applied to the "Cook2008" feature dataset: "Must Not Have Dangles" Requires that a line feature not touch lines from the same feature class at both endpoints. An endpoint that is not connected to another line is called a dangle. This rule is used when line features must form closed loops, such as when they are defining the boundaries of polygon features. "Must Not Self Overlap" Requires that a line feature cannot overlap itself. "Must Not Overlap" Requires that a line feature does not overlap another line of the same feature class. "Must Not Self Intersect" Requires that line features not cross or overlap themselves. "Must Not Intersect" Requires that line features from the same feature class not cross or overlap each other. Lines can share endpoints. NOTE: No topology rules were created to define permissible relationships between this feature class and others within the feature dataset. Once topology rules were established, the single ArcInfo coverage file was then exported as a feature class, named "Contours 1ft" into the "Cook2008" feature dataset. QUALITY CONTROL (QC) Pro-West & Associates (PWA) was contracted by Merrick to conduct QC procedures upon the feature classes. 1) Topology PWA was responsible for correcting topology errors to ensure that the feature classes contained: No dangles No self-intersections No self-overlaps No intersections No overlaps PWA would review topology errors and add a QC point to a new QC feature class when significant errors were discovered such as spikes in data that caused crossing contours, bad breaklines, etc. Breaklines were used to assist in the resolution of topology errors. When PWA's review was complete, the feature class of QC points was sent to Merrick so that they could make corrections and re-send that shapefile to PWA for re-insertion into the Township GDB. 2) Contour Coding PWA was responsible for verifying that regular (Index/Intermediate) contours did not tie with any depression (Index/Intermediate) contours. Contour "rings" (i.e., closed polygons) had to be only one type, either regular or depression. PWA reviewed each error, one feature at a time, and fixed the topographic feature class that had all the features and changed the contour types appropriately. 3) Hydro-polygons PWA verified that no contours crossed into hydro-polygons (waterbodies). Using a hydro-polygon feature class provided by Merrick, PWA clipped the topography feature class to create a topo_water feature class. PWA reviewed these features to discover any contours that crossed into lakes. When contours were discovered to cross into lakes, PWA could redraw these contours around the lake. When this was done, PWA would add a QC point to a new QC feature class so that Merrick could review the change and modify the breakline as necessary. In circumstances where PWA deemed the tolerance for error to have been exceeded, PWA would add a QC point to the new QC feature class. The contour was not re-drawn. Merrick would review the QC point, correct the error, and re-send that shapefile to PWA for re-insertion into the Township GDB. When all corrections were completed, the topology rules were re-run to ensure compliance. withheld 20100301 withheld Merrick & Company Doug Jacoby Director of Projects mailing and physical

2450 S. Peoria Street

Aurora Colorado 80014 U.S.A. (303) 751-0741 (303) 751-0741 doug.jacoby@merrick.com 09.00 to 17.00 Mountain Time Business is conducted Monday through Friday, except on holidays. GEODATABASES RETURNED FROM PWA FOR FINAL PROCESSING The contours_1ft feature class is intersected with the Obscured feature class to code any Obscured contour lines. This final feature class has FTYPE coded as follows: "Index Contours" Attribution of every fifth contour (multiples of five-feet) "Intermediate Contours" Contours that lay between each Index contour. "Index Depression Contours" Every fifth contour (multiples of five-feet) located in areas of lower elevation. "Intermediate Depression Contours" Contours that lay between each Index Depression contour. "Index Obscured Contours" Every fifth contour (multiples of five-feet) that intersects with previously captured areas of dense vegetation, dark shadows, etc. "Intermediate Obscured Contours" Contours that lay between each Index Obscured contour. "Index Depression Obscured Contours" Every fifth contour (multiples of five-feet) located in areas of lower elevation that intersects with previously captured areas of dense vegetation, dark shadows, etc. "Intermediate Depression Obscured Contours" Contours that lay between each Index Depression Obscured contour located in areas of lower elevation that intersects with previously captured areas of dense vegetation, dark shadows, etc. Information describing ground areas that were visually obscured was provided by a dataset titled: "Cook County, Illinois 1:1200-Scale 2009 Obscured Areas Polygons, Version 1.0, April 2009" ANNOTATION Nonfeature-linked annotation, which is geographically placed text strings that are not associated with features in the geodatabase, was generated to accompany the "Contour" feature class. All index contours (multiples of five-feet) were annotated using the ESRI maplex label engine. QUALITY CONTROL Merrick applied rigorous quality assurance and quality control measures during the initial photogrammetric process (aerial photography, control (AGPG and ground GPS), LiDAR, and aerotriangulation), to ensure that the final desired products maintained a high level of accuracy and quality. However, to ensure the integrity and completeness of the final cartographic characteristics and final databases, PWA performed a quality inspection that included a combination of data plotting, manual examination, and automated verification checks. Specifically: 1. Visual checks of content (existence of required features). 2. Cartographic inspection of the placement of all text and symbols. 3. Cartographic inspection to ensure that all topographic features matched along the edge of adjacent map sheets. 4. Registration of graphical data to digital orthophotography. 5. Automated inventory/validation of the feature class. 6. Automated validation of attributes. 7. Automated validation of element types, data ranges, directionality, and label points. 8. Automated validation of network topology of linear features. 9. Automated validation of correct annotation characteristics. 10. Conformance to file naming conventions. 11. Validation of the final data delivery format. 12. Inspection of Quality Control reports. Contour lines were verified against the DTMs, including breaklines. General review ensured that the lines did not cross each other, did not cross breaklines, had a smooth appearance, and were properly attributed. withheld 2010 withheld Merrick & Company Doug Jacoby Director of Projects mailing and physical

2450 S. Peoria Street

Aurora Colorado 80014 U.S.A. (303) 751-0741 (303) 751-0741 doug.jacoby@merrick.com 09.00 to 17.00 Mountain Time Business is conducted Monday through Friday, except on holidays. 0 Cook County, Illinois vector Simple FALSE 0 TRUE FALSE coordinate pair 0.000000 0.000000 survey feet North American Datum 1983, adjusted 1997 (NAD 83/97) HARN Geodetic Reference System 80 6378137.000000 298.257222 North American Vertical Datum of 1988 0.000500 feet Explicit elevation coordinate included with horizontal coordinates This dataset contains a polyline feature class (simple feature type) that represents 1-foot contours for Cook County, Illinois. In addition to automatically generated fields and associated attributes, this feature class includes: A contour TYPE field with attributes indicating obscured, depression, index (every five-foot) and intermediate (every 1-foot) contours. An ELEVATION field with attribute information expressed in U.S. survey feet. Cook County 2008 LiDAR and Topographic Data Services (Contract No. 08-41-342), 1-Foot Contours for Cook County, Illinois. Geodatabase Vector Digital Data, Version 1.0. Published: May 2010. > Data Dictionary: Cook County 2008 LiDAR and Topographic Data > Services (Contract No. 08-41-342), 1-Foot > Contours for Cook County, Illinois. Geodatabase > Vector Digital Data, Version 1.0. > Published: May 2010. > > Source: Cook County Board of Commissioners > Format: Data stored in ESRI ArcGIS 9.2 > Feature Types Maintained: Simple and Annotation > Geometry Types Maintained: Polyline and Polygon > > -------------------------------------------------------------------- > > Feature Class Name: Contours_1ft > Alias: Contours_1ft > Dataset Type: Feature Class > Feature Type: Simple > Geometry: Polyline > > Attribute Label Attribute Definition Attribute Type > Lth Prec Scale Type Null > OBJECTID Internal feature number 4 OID N > SHAPE Feature geometry Geo Y > FTYPE Contour description 35 Str Y > ELEVATION Height data 4 Int Y > SHAPE_Length Length of each polyline 8 Db Y > > > Key: Lth= Length Type: OID= Object ID > Prec= Precision Str= String > Db= Double > Geo= Geometry > Int= Integer > > OBJECTID > Attribute Definition: Sequential unique whole numbers that are > automatically generated. > Attribute Definition Source: ESRI > Attribute Domain Values: > Enumerated Domain: OBJECTID >= 1 > > SHAPE > Attribute Definition: Feature geometry > Attribute Definition Source: ESRI > Attribute Domain Values: > Enumerated Domain: SHAPE = "Polyline" > > FTYPE > Attribute Definition: Contour Description > Attribution Definition Source: Cook County Board of Commissioners > Attribute Domain Values: > Codeset Domain: "Intermediate" = Intermediate Contours > "Index" = Index Contours > "Intermediate Depression" = Intermediate Depression Contours > "Index Depression" = Index Depression Contours > "Intermediate Obscured" = Intermediate Obscured Contours > "Index Obscured" = Index Obscured Contours >"Intermediate Depression Obscured" = Intermediate Depression Obscured Contours > "Index Depression Obscured" = Index Depression Obscured Contours > > > ELEVATION > Attribute Definition: Height information, expressed in U.S. Survey > Feet, based upon the North American Vertical > Datum of 1988 > Attribution Definition Source: Cook County Board of Commissioners > Attribute Domain Values: > Range Domain: ELEVATION >= 200 =< 949 > > SHAPE_Length > Attribute Definition: Measured length of each polyline in U.S. Survey > Feet > Attribute Definition Source: ESRI > Attribute Domain Values: > Enumerated Domain: SHAPE_Length >= 0 > > -------------------------------------------------------------------- > > Feature Class Name: Contours_1ft_Anno > Alias: Contours_1ft_Anno > Dataset Type: Feature Class > Feature Type: Annotation > Geometry: Polygon > > Attribute Label Attribute Definition Attribute Type > Lth Prec Scale Type Null > OBJECTID Internal feature number 4 OID N > SHAPE Feature geometry Geo Y > FeatureID ObjectID of linked feature 4 Int Y > ZOrder Display prioritization 4 Int Y > AnnotationClassID Class name of the anno. 4 Int Y > Element Symbology & text geometry Blob Y > SymbolID 4 Int Y > Status 2 SInt Y > TextString 255 Str Y > FontName Font name 255 Str Y > FontSizeFont size 8 Db Y > Bold Bold (True/False) 2 SInt Y > Italic Italic (True/False) 2 SInt Y > Underline Underline (True/False) 2 SInt Y > VerticalAlignment Alignment of text 2 SInt Y > HorizontalAlignment Alignment of text 2 SInt Y > XOffset Text position 8 Db Y > YOffset Text position 8 Db Y > Angle Angle of annotation 8 Db Y > FontLeading Spacing between lines 8 Db Y > WordSpacing Spacing between words 8 Db Y > CharacterWidth Character width 8 Db Y > CharacterSpacing Character spacing 8 Db Y > FlipAngle Text flip angle 8 Db Y > Override Override value 4 Int Y > SHAPE_Length Perimeter length 8 Db Y > SHAPE_Area Area of polygon 8 Db Y > > > Key: Lth= Length Type: OID= Object ID > Prec= Precision SInt= Small Integer > Str= String > Db= Double > Geo= Geometry > Int= Integer > Blob= Binary Large Object > > OBJECTID > Attribute Definition: Sequential unique whole numbers that are > automatically generated. > Attribute Definition Source: ESRI > Attribute Domain Values: > Enumerated Domain: OBJECTID >= 1 > > SHAPE > Attribute Definition: The Polygon shape that represents the > outline of the annotation. > Attribute Definition Source: ESRI > Attribute Domain Values: > Enumerated Domain: SHAPE = "Polygon" > > FeatureID > Attribute Definition: For feature-linked annotation, this > field contains the ObjectID of the > linked feature. > Attribute Definition Source: ESRI > Attribute Domain Values: > Enumerated Domain: > > ZOrder > Attribute Definition: Prioritization of the display of Elements. > Where two or more Elements overlap, the > Element with a higher ZOrder is only > displayed. > Attribute Definition Source: ESRI > Attribute Domain Values: NOTE: Not attributed. > > AnnotationClassID > Attribute Definition: The Annotation Class the annotation belongs > to. For each annotation class there is one > related symbol in the Symbol Collection that > stores the symbology for that Annotation Class. > Attribute Definition Source: ESRI > Attribute Domain Values: NOTE: Not attributed. > > Element > Attribute Definition: A 'Blob' field that stores symbology and > text geometry. > Attribute Definition Source: ESRI > Attribute Domain Values: NOTE: Not attributed. > > SymbolID > Attribute Definition: > Attribute Definition Source: ESRI > Attribute Definition Values: > > Status > Attribute Definition: > Attribute Definition Source: ESRI > Attribute Definition Values: > > TextString > Attribute Definition: Text string for the feature > Attribute Definition Source: ESRI > Attribute Definition Values: > Enumerated Domain: > > FontName > Attribute Definition: Name of font > Attribute Definition Source: ESRI > Attribute Definition Values: > Enumerated Domain: > > FontSize > Attribute Definition: Size of font > Attribute Definition Source: ESRI > Attribute Definition Values: > Range Domain: > > Bold > Attribute Definition: Whether the font is bold (true/false) > Attribute Definition Source: ESRI > Attribute Definition Values: > Codeset Domain: > > Italic > Attribute Definition: Whether the font is italic (true/false) > Attribute Definition Source: ESRI > Attribute Definition Values: > Codeset Domain: > > Underline > Attribute Definition: Whether the font is underlined (true/false) > Attribute Definition Source: ESRI > Attribute Definition Values: > Codeset Domain: > > VerticalAlignment > Attribute Definition: Alignment of text (top/center/baseline/bottom) > Attribute Definition Source: ESRI > Attribute Definition Values: > Enumerated domain: > > HorizontalAlignment > Attribute Definition: Alignment of text (left/right/center/full) > Attribute Definition Source: ESRI > Attribute Definition Values: > Enumerated domain: > > XOffset > Attribute Definition: Shifts the text position right or left > Attribute Definition Source: ESRI > Attribute Definition Values: > Enumerated domain: > > YOffset > Attribute Definition: Shifts the text position up or down > Attribute Definition Source: ESRI > Attribute Definition Values: > Unrepresentable domain: > > Angle > Attribute Definition: Rotates the text angle > Attribute Definition Source: ESRI > Attribute Definition Values: > Unrepresentable domain: > > FontLeading > Attribute Definition: Adjusts the spacing between lines > Attribute Definition Source: ESRI > Attribute Definition Values: > Unrepresentable domain: > > WordSpacing > Attribute Definition: Adjusts the spacing between words > Attribute Definition Source: ESRI > Attribute Definition Values: > Unrepresentable domain: > > CharacterWidth > Attribute Definition: Adjusts the character width > Attribute Definition Source: ESRI > Attribute Definition Values: > Unrepresentable domain: > > CharacterSpacing > Attribute Definition: Adjusts the spacing between characters > Attribute Definition Source: ESRI > Attribute Definition Values: > Unrepresentable domain: > > FlipAngle > Attribute Definition: Adjusts the angle at which point rotated > text is flipped in place > Attribute Definition Source: ESRI > Attribute Definition Values: > Unrepresentable domain: > > Override > Attribute Definition: Override value > Attribute Definition Source: ESRI > Attribute Definition Values: > Unrepresentable domain: > > SHAPE_Length > Attribute Definition: Measured length of each polygon in U.S. Survey > Feet > Attribute Definition Source: ESRI > Attribute Definition Values: > > SHAPE_Area > Attribute Definition: Measured area of each polygon in U.S. Survey > Feet > Attribute Definition Source: ESRI > Attribute Definition Values: Contours_1ft_19 Feature Class 0 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. Ftype Ftype String 35 0 0 Elevation Elevation Integer 4 0 0 Shape_Length Shape_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. 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 2008 LiDAR and Topographic Data Services (Contract No. 08-41-342), 1-Foot Contours for Cook County, Illinois. Geodatabase Vector Digital Data, Version 1.0. Published: May 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 Feature Class ArcGIS Version 9.2 feature class (simple feature type) dataset type with a polyline geometry. No compression applied DVD-ROM 14.1 Gigabytes Recording_Format Accessible on any computer capable of reading a DVD-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. 201005 unknown 20100420 Mike Hoather Subcontractor to Merrick & Company mailing and physical address

225 W. Huron Street, #516

Chicago Illinois 60654 USA 773-251-4678 Mhoather@excite.com 09:00 - 17:00, Central Time Zone, Monday-Friday, except holidays Please contact during normal business hours FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None This metadata file is intended to accompany the geospatial data set identified and received from Cook County. It is not to be altered or summarized. Cook County does not support secondary distribution. If this geospatial data set was received from anyone besides the Cook County Department of Office Technology, this metadata file and the geospatial data set it describes may lack integrity. Esri ArcGIS 10.1.1.3143 Contours_1ft_19 Contours_1ft_19 002 Projected GCS_North_American_1983_HARN Linear Unit: Foot_US (0.304801) NAD_1983_HARN_StatePlane_Illinois_East_FIPS_1201 <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/10.1'><WKT>PROJCS[&quot;NAD_1983_HARN_StatePlane_Illinois_East_FIPS_1201&quot;,GEOGCS[&quot;GCS_North_American_1983_HARN&quot;,DATUM[&quot;D_North_American_1983_HARN&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]],VERTCS[&quot;NAVD_1988&quot;,VDATUM[&quot;North_American_Vertical_Datum_1988&quot;],PARAMETER[&quot;Vertical_Shift&quot;,0.0],PARAMETER[&quot;Direction&quot;,1.0],UNIT[&quot;Foot_US&quot;,0.3048006096012192]]</WKT><XOrigin>-17463800</XOrigin><YOrigin>-46132600</YOrigin><XYScale>199999.99999999997</XYScale><ZOrigin>-100000</ZOrigin><ZScale>3048.0060960121918</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>1.0000000000000001e-005</XYTolerance><ZTolerance>0.0032808333333333331</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision></ProjectedCoordinateSystem> 20130419 13210000 20130419 13210000 20211110 16263800 1.0 TRUE File Geodatabase Feature Class dataset 0 20130419