N.H. Code Admin. R. Env-A 3008.01
For the purpose of determining compliance with this chapter, any rule adopted by the division relative to this chapter or an ERC certificate issued under this chapter, an employee or authorized representative of the division, the department, or EPA shall be allowed to, upon presentation of appropriate credentials and at least once every 3 years or at any other reasonable time:
(c) Inspect and copy records, information or test results relating to:
Source. #6441, EXEMPT, eff 1-21-97