Groundwater Analytical is a NELAP accredited laboratory, in accordance with NELAC standards. We maintain environmental laboratory certification or accreditation in the following states: Connecticut (Chemistry) Massachusetts (Asbestos) Massachusetts (Chemistry and Microbiology) New Hampshire (Chemistry and Microbiology) New York (Chemistry and Microbiology) Rhode Island (Chemistry and Microbiology) Vermont (Chemistry) Other laboratory documentation: USDA Foreign Soil Permit MassDEP EPH and VPH Proficiency Record