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Developer APIs
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The API solution, also known as the SCS core solution was created to integrate with your pre-existing
application and to support CROMERR compliant, online, environmental document submission.
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Services Offered

VerifyUser API
Verify UserID
Manage API

Getting Started

  • Request a meeting

    To get your program setup in Advanced SCS, please request a kickoff meeting. EPA and its contractor will send you a meeting invite.

    Should you need any help completing the form or would rather speak with someone first, please send an email to and we will reach out to you.

  • Launch the Core Service Demo Application

    While you wait for the NAAS account to be created, please explore the demonstration tool. We have an API trace to show you where all the calls should be made.

    Demo Tool

  • Establish Partnership

    To utilize the Identity Proofing Service, an account needs to be created with LexisNexis. NOTE: The process can take a while. So start the process as soon as possible.

    Setup LexisNexis Account

    Should you need any help completing the LexisNexis form, please send us an email at

  • API Documentation

    Access the API documentation and guides. These files will help you get started developing a CROMERR-compliant system.

    Online documentation for SCS Core:

    Online documentation for Advanced SCS:

    Downloadable reference guides:
    Download Files

    We are here to help you setup the APIs in your system, please send any questions to

    CROMERR Application

    Make sure you have submitted a CROMERR CoverSheet as soon as you have decided how your application will be set up. If you have any questions regarding CROMERR or the CROMERR Application Process please click here for further instructions.

  • Download Application

    Alabama DEM built an application that utilizes the SCS APIs. They subsequently have made that application open source and available for download and use, after your NAAS account has been created.

    Download Application

    We are here to help you throughout the development and O&M lifecycle. Please direct any requests or questions to

  • Customer Support Setup and Consulting

    After your system has been setup, feel free to schedule a helpdesk training session with your helpdesk team to better help your end users. We can supply your helpdesk with standard FAQs, and update your partner helpdesk contact information. To Request a meeting, please send an email to

  • Optional Organization Setup

    Download Optional Organization Pre-Population

  • Optional Theme

    Send us a Logo and color schemes (or send us a hyperlink to a page the theme should emulate)