USDA Forest Supervisor's Office in Corvalis, Oregon has a dedicated lactation room. There's a whiteboard for moms to sign in when they wish to use this nursing room to breastfeed or breastpump. No code is required.
The space is small but private. There is a partitioned cubicle area with a small table top, an outlet, a small refrigerator to store breast milk, and a padded armchair.
Note: Report mom-shaming or harassment while nursing in public or near lactation rooms (breastfeeding rooms), at Moms Pump Here mobile site https://www.momspumphere.com