Presolicitation Notice: Department of Health and Human Services, Department of National Institutes of Health (NIH) intends to negotiate with Rees Scientific for the procurement of an environmental monitoring system package. The package includes a comprehensive five-year service package with various components and documentation. The service shall be performed at Rocky Mountain Laboratories (RML) in Hamilton, MT. The monitoring system is required to ensure compliance with regulations enforced by the Association for Assessment and Accreditation of Laboratory Animal Care (AAALAC) for animal research operations at RML. This is a sole source requirement, and no other company has the authority to perform these critical services. Interested parties may submit a capability statement for consideration by the Government.