requiring a baseline environmental impact study to be completed prior to development of certain manufacturing and storage facilities.

HB 1621 requires developers to complete a baseline environmental study before building or expanding manufacturing or storage facilities larger than 50,000 square feet. The study must assess current environmental conditions - including water, air, soil, noise, and light - and analyze potential impacts, mitigation measures, and alternatives. Applicants must fund the study, conducted by approved professionals, and resubmit it for ownership changes or facility use modifications. The New Hampshire Department of Environmental Services must review the study and make it publicly available with a 30-day comment period before issuing permits. This applies specifically to industrial-scale facilities, not smaller operations.