Developer APIs
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.

Services Offered

Send SMS Codes to End-Users
  • Create and validate unique codes that can be sent in email or SMS document transmission.
End-Users Identity Verification
  • Verify your users’ identities with a third-party provider (LexisNexis).
  • Retrieve results for users already verified.
Validate End-User Identity
  • Verify user unique secret questions.
  • Decrease subsequent identity proofing costs.
Sign/Store Documents in CROMERR
  • Validate a user when they sign a document.
  • Store documents in CROMERR.
  • Set enforcement status.
  • Retrieve documents as needed verified.
Ability to Manage SCS Users in App
  • Create SCS accounts in app.
  • Authenticate SCS users.
  • Ability to change account password, user information, and security questions.

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 sharedcromerrservices@epacdx.net 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 sharedcromerrservices@epacdx.net.

  • 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 sharedcromerrservices@epacdx.net.

  • 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 sharedcromerrservices@epacdx.net.

  • 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 sharedcromerrservices@epacdx.net.