Which of the following is not a type of sampling used for mold assessment?

Liquid sampling is not typically recognized as a type of sampling used in mold assessment. The main methods for assessing mold levels in an environment include bulk sampling, surface sampling, and tape sampling, each of which provides specific information about mold presence and concentration.

Bulk sampling involves collecting a portion of material suspected to contain mold, such as drywall or insulation, to analyze in the lab, allowing for comprehensive examination of the mold structure and type. Surface sampling utilizes adhesive tape or other methods to collect mold spores from surfaces, which is useful for identifying mold types and levels in particular areas. Tape sampling specifically refers to the method where tape is lifted from a surface to capture mold spores, primarily used for evaluating mold contamination on surfaces.

Liquid sampling, while it can be important in certain contexts (such as testing water for pathogens), does not directly apply to airborne or surface assessment of mold, which is crucial in indoor air quality assessments. Therefore, its absence from the primary mold sampling methodologies highlights why it is the correct choice in this question.