Currently Known Extent of Groundwater Contamination (CKE) for New Jersey, Edition 20250902 (Envr_mon_gw_CKE)
Metadata:
Identification Information:
Citation:
Citation Information:
Originator: New Jersey Department of Environmental Protection (NJDEP), Site Remediation Program (SRP), Bureau of Information Systems (BIS)
Publication Date: 20250902
Title: Currently Known Extent of Groundwater Contamination (CKE) for New Jersey, Edition 20250902 (Envr_mon_gw_CKE)
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Trenton
Publisher: NJ Department of Environmental Protection (NJDEP)
Online Linkage: https://www.nj.gov/dep/gis
Online Linkage: https://www.nj.gov/dep/gis/geowebsplash.htm
Description:
Abstract: This data layer contains information about areas in the state which are specified as the Currently Known Extent (CKE) of ground water pollution. CKEs are geographically defined areas within which the local ground water
resources are known to be compromised because the water quality exceeds drinking water and ground water quality standards for specific contaminants. Historically, a number of the CKEs have also been identified as Well
Restriction Areas (WRAs). The regulatory authority for developing CKEs is in N.J.A.C. 7:1J, entitled Processing of Damage Claims Pursuant to the Spill Compensation and Control Act. CKEs are used by NJDEP staff, water
purveyors, and local officials to make decisions concerning appropriate treatment and/or replacement of contaminated drinking water supplies. Additional guidance on the mapping of CKEs for potable well Immediate
Environmental Concerns (IECs) can be found in Section 4.1.6. and Appendix A of the NJDEP Site Remediation Program IEC Guidance Document. The CKE areas, as shown, are intended to provide information to the public about
contaminated ground water areas in the state. Unless precautionary measures are taken to protect potable users, well installation should be avoided. This information is being made available so informed decisions can be
made on well location, design, or treatment before wells are proposed, permitted, and installed. The Department is currently engaged in the reassessment and investigation of existing CKEs; however, it is important to note
that CKEs are approximations of the actual aerial extent of ground water contamination and the boundaries presented here may change over time as new information is developed and plume migration occurs. At this time, the
records of the CKEs in this database application may include a list of the specific ground water contaminants where available. Also, it should be noted that CKE areas might overlap with other CKEs and Classification
Exception Areas (CEAs). Revisions and additions will be used to update the CKE database as new information is received and processed. In this application, the CKE is represented as a GIS-based polygon coverage that
depicts the spatial extent of known potable well contamination in an area (as determined by NJDEP Site Remediation staff). The CKE polygon will usually follow the property boundary lines of all the contiguous properties
with contaminated wells when the wells are within 1,000 feet of each other. However, on properties larger than 3.5 acres the boundary of the CKE may be based on the location of the contaminated well and may not encompass
the entire property. Also, in some areas contaminated wells may have been detected in proximity to an established CKE but have not been included within the boundary of the CKE because the well is outside the 1,000 foot
radius. For further information contact NJDEPs Site Remediation Waste Management Program (SRWMP), Bureau of Environmental Management and Site Assessment (BEMSA), the lead program for CKE case oversight at (609) 530-2474.
Be advised that CKEs have not been created for IECs where public supply wells that have been impacted by ground water contamination and a CKE has not yet been developed for all areas where a domestic potable well IEC
exists.
Purpose: The CKE polygon coverage was developed to provide information regarding the spatial extent of the Currently Known Extent of Groundwater Contamination (CKE) assocaited with domestic potable wells where contaminants were
detected in excess of the USEPA drinking water Maximum Contaminant Level (MCL) or NJDEP Ground Water Quality Standards (GWQS). This data in its geographic format is intended to provide information to the public about
contaminated ground water areas in the state for evaluation before a well is proposed and permitted and where potable well placement is restricted or should be avoided. If wells must be placed in these areas, the wells
should be designed to eliminate the possibility of contamination migration to other areas of the aquifer.
Supplemental Information: NJDEP Site Remediation staff have determined the spatial extent for each CKE polygon. The CKE area is based on the results of GW analysis indicating that contamination is present in a residential or commercial
establishment's potable well above the NJ Safe Drinking Water Standards. The CKE polygon edge will follow the property boundary line where the contaminated well was detected and is continuous with other property
boundaries where wells were found to be compromised and are within 1,000 feet of each other. If a property with a contaminated well is greater than 3.5 acres the boundary of the CKE will bisect the property and continue
on to the nearest property within 1,000'. The Department is engaged in reassessment and investigation of the existing CKEs, however it is important to note that CKEs areas are approximations of the actual aerial extent of
GW contamination and the boundaries presented here will change over time as new information is developed and plume migration occurs. Contaminated wells may have been detected outside a 1,000 foot radius in the proximity
of an established CKE but have not been included within the boundary of the CKE. At this time the record of the CKEs in this file may include a listing of the specific chemicals contaminating GW where available. It should
be noted that CKE areas might overlap with other CKEs and Classification Exception Areas (CEAs). Revisions and additions will be used to update the CKE database as new information is received.
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 20220215
Currentness Reference: publication date
Status:
Progress: In work
Maintenance and Update Frequency: As needed
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -75.562661
East Bounding Coordinate: -73.914848
North Bounding Coordinate: 41.35209
South Bounding Coordinate: 38.931107
Keywords:
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: environment
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Groundwater
Theme Keyword: Contamination
Theme Keyword: pollution
Theme Keyword: plume
Theme Keyword: well restriction
Theme Keyword: aquifers
Theme Keyword: contaminants
Theme Keyword: human and environmental health
Theme Keyword: oil spill
Theme Keyword: pollution
Theme Keyword: polygon
Theme Keyword: well restriction area
Theme Keyword: environment
Theme Keyword: Envr_mon_gw_CKE
Theme Keyword: cke
Theme Keyword: GWIA
Theme Keyword: gwia
Theme Keyword: WRA
Theme Keyword: wra
Theme Keyword: IEC
Theme Keyword: unknown source
Theme Keyword: NJDEPTrentonMetadata
Theme Keyword: NJDEP
Theme Keyword: New Jersey
Access Constraints: None
Use Constraints: New Jersey Department of Environmental Protection (NJDEP) Data Distribution Agreement. The data provided herein are distributed subject to the following conditions and restrictions: NJDEP assumes no responsibility to
maintain them in any manner or form and disclaims any duty or obligation to either maintain availability of or to update the data. Terms of Agreement 1. All data is provided, as is, without any representation or warranty of
any kind, implied, expressed or statutory including, but not limited to, the warranties of non-infringement of third party rights, title, merchantability or fitness for a particular use, freedom from computer virus nor are
any such warranties to be implied with respect to the digital data layers furnished hereunder. User is responsible for understanding the accuracy limitations of all digital data layers provided herein, as documented in the
accompanying cross-reference files (see SUPPLEMENTAL INFORMATION). Any reproduction or manipulation of the above data must ensure that the coordinate reference system remains intact. 2. Digital data received from the NJDEP
may not be reproduced or redistributed without all the metadata provided. 3. Any maps, publications, reports, or other documents produced as a result of this project that utilize this digital data will credit the NJDEP's
Geographic Information System (GIS) as the source of the data with the following credit/disclaimer: 'This (map/publication/report) was developed using New Jersey Department of Environmental Protection Geographic Information
System digital data, but this secondary product has not been verified by NJDEP and is not state-authorized or endorsed.' 4. NJDEP makes no warranty that digital data are free of Copyright or Trademark claims or other
restrictions or limitations on free use or display. Making a copy of this data may be subject to the copyright of trademark laws.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: New Jersey Department of Environmental Protection (NJDEP), Site Remediation and Waste Management Program (SRWMP), Division of Enforcement, Technical & Financial Support (DETFS), Enforcement & Information Support Element
(EISE), Bureau of Information Services (BIS)
Contact Person: Joe Stefanoni
Contact Position: Supervising Geographic Information Specialist
Contact Address:
Address Type: mailing and physical
Address: 401 East State Street, 401-06N
City: Trenton
State or Province: New Jersey
Postal Code: 08625
Contact Voice Telephone: (609) 633-1405
Contact Electronic Mail Address: joe.stefanoni@dep.nj.gov
Data Quality Information:
Attribute Accuracy:
Attribute Accuracy Report: The list of Currently Known Extent of GW contamination area polygons is a work in progress and the information contained within the record will be updated. The department will endeavor to include these updates in future
reports. No other tests were run for attribute accuracy verification.
Logical Consistency Report: The CKE layer was developed through comparison to NJDEP aerial imagery.
Completeness Report: No omissions noted for this edition of the CKE.
Lineage:
Process Step:
Process Description: Most CKEs in the initial CKE GIS layer were mapped based on a series of NJDEP Immediate Concern Unit (ICU) binders that contained pertinent information about each CKE including a hard copy map that indicated the CKE,
well restirction area (WRA) or ground water impact area (GWIA) boundary. These initial boundaries were created without the use of a NJ State-Wide GIS parcel layer so may not line up with property bounderies contained in
the New Jersey statewide parcel layer. The majority of the hitoric CKE boundaries were refined based on the parcel layer, however, to the extent possible. Georeferencing of an electronic copy the hard copy map was also
conducted to aid in refining the original CKE boundaries. Additional CKEs for active potable well IECs were also mapped based on information obtained through Spill Fund Claim data, NJDEP file reviews and/or attachments
associated with the potable well IEC found in NJEMS. Refinement of the CKE layer was needed since better means to map the CKE, WRA and GWIA boundaries in a GIS format now exist. In addition, CKEs were developed for
active domestic well IECs cases and added to the GIS layer where possible.
Process Date: 20180105
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: New Jersey Department of Environmental Protection (NJDEP), Site Remediation and Waste Management Program (SRWMP), Division of Enforcement, Technical & Financial Support (DETFS), Enforcement & Information Support
Element (EISE), Bureau of Information Services (BIS)
Contact Person: Joe Stefanoni
Contact Position: Supervising Geographic Information Specialist
Contact Address:
Address Type: mailing and physical
Address: 401 East State Street, 401-06N
City: Trenton
State or Province: New Jersey
Postal Code: 08625
Contact Voice Telephone: (609) 633-1405
Contact Electronic Mail Address: joe.stefanoni@dep.nj.gov
Spatial Data Organization Information:
Direct Spatial Reference Method: Vector
Point and Vector Object Information:
SDTS Terms Description:
SDTS Point and Vector Object Type: GT-polygon composed of chains
Point and Vector Object Count: 240
Spatial Reference Information:
Horizontal Coordinate System Definition:
Planar:
Grid Coordinate System:
Grid Coordinate System Name: State Plane Coordinate System 1983
State Plane Coordinate System (SPCS):
SPCS Zone Identifier: 2900
Entity and Attribute Information:
Detailed Description:
Entity Type:
Entity Type Label: Envr_mon_gw_CKE
Entity Type Definition: Currently Known Extent of Groundwater Contamination
Entity Type Definition Source: NJDEP/SRWMP
Attribute:
Attribute Label: OBJECTID
Attribute Definition: Unique internal feature number.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute Label: PREF_ID_NUM (Alias: Pref ID Number)
Attribute Definition: Internal NJEMS/Masterfile identifier at the case level
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: NAME (Alias: Name)
Attribute Definition: Aka for the CKE. This field (NAME) was repurposed and used to contain the CKE name aka as it can contains less characters than the NAME_AKA field.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: NAME_AKA (Alias: Name Aka)
Attribute Definition: Name of the CKE. This field (NAME_AKA) was repurposed and used for the CKE name as it can contains more characters than the NAME field.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: ADDRESS (Alias: Address)
Attribute Definition: Street address or generalized address associated with the CKE
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: MUNICIPALITY (Alias: Municipality)
Attribute Definition: Municipality (or municipalities) within which the CKE is located.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: COUNTY (Alias: County)
Attribute Definition: County (or counties) within which the CKE is located.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: IEC_STATUS (Alias: IEC Status)
Attribute Definition: This field was repurposed to indicate the status of the potable well IEC associated with the CKE when applicable.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: IP
Enumerated Domain Value Definition: Potable Well IEC status is In Progress
Enumerated Domain Value Definition Source: NJDEP/SRWMP/BIS/GIS Unit
Enumerated Domain:
Enumerated Domain Value: RA
Enumerated Domain Value Definition: Potable Well IEC status is Receptor Addressed
Enumerated Domain Value Definition Source: NJDEP/SRWMP/BIS/GIS Unit
Enumerated Domain:
Enumerated Domain Value: SRID
Enumerated Domain Value Definition: The source of the potable well IEC has been identified
Enumerated Domain Value Definition Source: NJDEP/SRWMP/BIS/GIS Unit
Enumerated Domain:
Enumerated Domain Value: C
Enumerated Domain Value Definition: The status of the potable well IEC is completed.
Enumerated Domain Value Definition Source: NJDEP/SRWMP/BIS/GIS Unit
Enumerated Domain:
Enumerated Domain Value: N/A
Enumerated Domain Value Definition: Not applicable - no IEC subject item was created for this CKE
Enumerated Domain Value Definition Source: NJDEP/SRWMP/BIS/GIS Unit
Attribute:
Attribute Label: IEC_SUBJECT_ITEM_ID (Alias: IEC Subject Item ID)
Attribute Definition: The subject item ID represents an internal NJEMS identifier associated with the active subject item associated with the active potable well IEC.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: START_DATE (Alias: Start Date)
Attribute Definition: Date CKE was approved by NJDEP or potable well IEC case was initiated when the CKE approval date is not known.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: CKE_SOURCE_INFO (Alias: CKE Source Info)
Attribute Definition: This field was repurposed to indicate the source of the information that was used to map the CKE boundary.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: CEA_IN_PLACE (Alias: CEA In Place)
Attribute Definition: This field was repurposed to indicate whether a CEA has been developed for the site(s) identified as the source(s) of the contamination associated with the CKE.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: Yes
Enumerated Domain Value Definition: A CEA exists for the source(s) of the contamination associated with the CKE.
Enumerated Domain Value Definition Source: NJDEP/SRWMP
Enumerated Domain:
Enumerated Domain Value: No
Enumerated Domain Value Definition: A CEA does not exist for the source(s) of the contamination associated with the CKE.
Enumerated Domain Value Definition Source: NJDEP/SRWMP
Attribute:
Attribute Label: VOCS (Alias: VOCs)
Attribute Definition: A listing of the Volatile Organic Compounds associated with a CKE.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: SVOCS (Alias: SVOCs)
Attribute Definition: A listing of the Semi-Volatile Organic Compounds associated with a CKE.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: METALS (Alias: Metals)
Attribute Definition: A listing of the metal contaminants associated with a CKE.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: PEST_PCBS (Alias: Pesticides/PCBs)
Attribute Definition: A listing of the Pesticides and/or polychlorinated biphenols (PCBS) contaminants associated with a CKE.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: RADIOLOGICAL (Alias: Radiological)
Attribute Definition: A listing of the radiological contaminants associated with a CKE.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: OTHER (Alias: Other)
Attribute Definition: 'Catch-all' for anything not fitting in the other contaminant categories.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: CKE_BOUNDARY_ORIGIN (Alias: CKE Boundary Origin)
Attribute Definition: This field was repurposed to indicate the source of the information that was used to map the CKE boundary.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: PI_ID (Alias: PI ID)
Attribute Definition: Internal NJEMS/Masterfile case identifier
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: ACRES (Alias: Acres)
Attribute Definition: This field was repurposed to indicate the total acreage associated with a CKE boundary.
Attribute Definition Source: NJDEP
Attribute Domain Values:
Unrepresentable Domain: Unique value
Attribute:
Attribute Label: SHAPE
Attribute Definition: Feature geometry.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Coordinates defining the features.
Attribute:
Attribute Label: SHAPE.AREA
Attribute Definition: SHAPE AREA
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: UNIQUE
Attribute:
Attribute Label: SHAPE.LEN
Attribute Definition: SHAPE LENGTH
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: UNIQUE
Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: NJDEP/DOIT/Bureau of GIS
Contact Person: GIS Help Desk
Contact Address:
Address Type: mailing and physical
Address: 401 East State Street
City: Trenton
State or Province: NJ
Postal Code: 08625
Contact Voice Telephone: (609) 777-0672
Contact Facsimile Telephone: (609) 292-7900
Contact Electronic Mail Address: gisnet@dep.nj.gov
Resource Description: Downloadable Data
Distribution Liability: See access and use constraints information.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: DEP distributes ESRI .SHP and/or GDB. Some data may be NJ GeoWeb "display only" layers.
Format Version Number: latest version
File Decompression Technique: WinZip
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://www.nj.gov/dep/gis/geowebsplash.htm
Computer Contact Information:
Network Address:
Network Resource Name: https://www.nj.gov/dep/gis
Fees: None
Ordering Instructions: All available NJDEP public GIS data can be downloaded for free. Some data shown in NJGeoWeb application may not yet be available for download due to various data or distribution issues. Please email gisnet@dep.nj.gov with
any data distribution questions.
Metadata Reference Information:
Metadata Date: 20250902
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: New Jersey Department of Environmental Protection (NJDEP), Site Remediation and Waste Management Program (SRWMP), Division of Enforcement, Technical & Financial Support (DETFS), Enforcement & Information Support Element
(EISE), Bureau of Information Services (BIS)
Contact Person: Joe Stefanoni
Contact Position: Supervising Geographic Information Specialist
Contact Address:
Address Type: mailing and physical
Address: 401 East State Street, 401-06N
City: Trenton
State or Province: New Jersey
Postal Code: 08625
Contact Voice Telephone: (609) 633-1405
Contact Electronic Mail Address: joe.stefanoni@dep.nj.gov
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time