EPA Environmental Dataset Gateway


Open/Close section Identification Information
Title: National Priorities List (NPL) Site Polygons, Region 9, 2015, US EPA Region 9
Abstract: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>NPL site POLYGON locations for the US EPA Region 9. NPL (National Priorities List) sites are hazardous waste sites that are eligible for extensive long-term cleanup under the Superfund program. Eligibility is determined by a scoring method called Hazard Ranking System. Sites with high scores are listed on the NPL. Area covered by this data set include Arizona, California, Nevada, Hawaii, Guam, American Samoa, Northern Marianas and Trust Territories. Attributes include NPL status codes, NPL industry type codes and environmental indicators. Related table, NPL_Contaminants contains information about contaminated media types and chemicals. This is a one-to-many relate and can be related to the feature class using the attribute CERCLIS_ID. Generally, each NPL polygon has a separate source. Information about sources for each polygon can be found in the related table, NPL_POLY_METADATA. This table contains a record for each site that has information about the source. Polygons for non-Federal Facility sites were updated in January, 2007 for the Superfund Work Load Models project. Each polygon was approved by the site RPM. Where available, the majority of these polygons represent the surface expression of the extent of the contamination. All Federal Facilities are represented by the facility boundary. The following sites currently have no polygon data available at this time: Alameda Naval Air Station, Jet Propulsion Lab (NASA), Lab for Energy-Related Health Research / Old Campus, Lawrence Livermore National Lab (Site 300)(USDOE), and Stoker. 4 polygons represent combined NPL sites that have merged plume boundaries.</SPAN></P></DIV></DIV></DIV>
Publisher: US Environmental Protection Agency Region 9
Open/Close section Reference System Information
Data Type: Vector
Open/Close section Spatial Domain
West Bounding Longitude: 144.552
South Bounding Latitude: -14.459
East Bounding Longitude: -106.793
North Bounding Latitude: 42.258
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Open/Close section Constraints
License https://edg.epa.gov/EPA_Data_License.html
Access: Unclassified
Use: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The NPL polygon data is suitable for large scale mapping.</SPAN></P></DIV></DIV></DIV>
Open/Close section Data Quality Information
Scope (quality information applies to): 005
Open/Close section Data Theme
Theme Topics: Environment and Conservation
Open/Close section Contact Information
Organization: U.S. Environmental Protection Agency, Region 9
Contact Position: GIS Coordinator
Contact Person: Cheryl Henley
Email: henley.cheryl@epa.gov
Address: 75 Hawthorne Street
City: San Francisco
State: CA
Postal Code: 94105
Telephone: 415-972-3586
Open/Close section General Information
Publisher Document Identifier: 4AB66F84-26A0-450E-924C-D3280AB6F8EC
Metadata Date Stamp: 2017-09-18
Organization: U.S. Environmental Protection Agency, Region 9
Organization Role: 007
Open/Close section Metadata Reference Information
Metadata Standard Version: 1.0