National Center of Immigrant Integration Policy (Migration Policy Institute)

The Language Portal is a digital library of close to 600 resources relating to the use of language access services in social services and public safety agencies.  The Portal includes legal guidelines, service models, master contracts for service providers, hourly translation and interpretation rates for different languages in key areas of the United States, pay differentials for multilingual staff, and sample translated documents.

https://www.migrationpolicy.org/programs/language-access-translation-and-interpretation-policies-and-practices/language-portal