How do I get a userId?

You can get an account by contacting your state/EPA node administrator. Each node has one or more administrators who can create user accounts for that particular node. Although a user account is associated with a Network node, it may be used to access other nodes if authorized.

NAAS provides simple tools to node administrators for managing user account information. When an account is established, it belongs to the node that the administrator controls, and it cannot be changed or deleted by any other node administrators. Node administrators should refer to the Node Administrator's Guide for further information.

the section called “How do I get an administrator account?”