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SEMS Search User Guide

Home | Multisystem Search | Topic Searches | System Data Searches | About the Data | Data Downloads | Widgets| Services | Mobile| Other Datasets
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SEMS is the official repository for site and non-site specific Superfund data in support of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). It contains information on hazardous waste site assessment and remediation from 1983 to the present.

This is a brief user's guide to the SEMS Search. Select from a variety of different search options and output options as detailed below. Contact us if you have any suggestions for improvements to these pages.

Select more than one search option at a time to speed up the search and make the retrieval more focused. Only those facilities matching all specified criteria will be retrieved.

Facility Identification Search Option

First, select Facility Name or SEMS EPA ID from the Facility Identification dropdown list.

Facility Name

Enter a complete or partial facility name to retrieve all facilities with that name.

Select the “Beginning With” option to retrieve results where the start of the facility name is equal to the search value. When the "Exact Match" option is specified for a facility name, only facilities that exactly match the name as entered will be retrieved. Select the "Containing" option when entering a partial name for a better retrieval the first time you access the data.

SEMS EPA ID

Select the “Beginning With” option to retrieve results where the start of the SEMS EPA ID is equal to the search value. When the "Exact Match" option is specified for a SEMS EPA ID, only facilities that exactly match the ID as entered will be retrieved. Select the "Containing" option when entering a partial SEMS EPA ID for a better retrieval the first time you access the data.

Geography Search Option

Select from the following geographical search options: ZIP Code, Address, City, County, and State.

ZIP Code

The entry can be one or more digits.

Address

Enter a complete or partial street address. Select the “Beginning With” option to retrieve results where the start of the address is equal to the search value. When the "Exact Match" option is specified for an address, only facilities that exactly match the address as entered will be retrieved. Select the "Containing" option when entering an address for a better retrieval the first time you access the data.

City

Enter a complete or partial city name. State is required with City.

County

Enter a complete or partial county name. State is required with County.

State

Select a State from the dropdown list.

Note: We strongly recommend that you enter a small geographical area to begin the search since Envirofacts contains a large number of facilities.

National Priority List (NPL) Sites Only

Check this option to retrieve only those sites which are proposed, currently, or previously on the NPL.

Contaminant Search

Select a contaminant from the dropdown list to locate sites that have this contaminant on the site.

SEMS Search Results

Basic Facility Information

The Basic Facility Information that you will receive with this search consists of the following variables:

  • SEMS EPA ID: Click the SEMS EPA ID link to view facility information in the SEMS Detail View.
  • Facility Information: Click on the "View Facility Information" link to view EPA Facility information for the facility.
  • Site Name
  • Address: The Facility Address is a combination of the following individual attributes in the SEMS system:
    • STREET
    • CITY
    • STATE
    • ZIP CODE
  • County
  • Federal Facility
  • NPL Status
  • Non-NPL Status
  • Latitude/Longitude
  • Contaminants

SEMS Detail View

The SEMS Detail View consists of the following variables:

Site Information

  • Site Name
  • Site ID
  • EPA ID
  • Site Address Info
    • Street Address
    • City
    • State
    • ZIP Code
    • District Code
    • County Code
    • Latitude
    • Longitude
    • FIPS Code
    • Region Code
  • Additional Info
    • Federal Facility
    • SAA Agreement
    • NPL
      • Status Code
      • Status Name
    • Non-NPL
      • Status Code
      • Status Name
      • Date
    • Archived

Contaminants

  • Operable Unit Number
  • Action Name
  • Type Code
  • SEQ
  • Media Name
  • Preferred Name

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Last updated on January 10, 2025
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