041-2 Wyo. Code R. § 2-5
(a) A list of structures to be assessed shall be made for each site. If the Clanlab is reported to exist in a single family home, the assessment shall include the home and any other structure on the site that the person(s) who allegedly were involved in the Clanlab(s) may have had access to.
(b) If the Clanlab is reported to exist in multifamily housing (e.g., duplex, condominium, townhouse style dwellings), the assessment shall include the unit where the activity was reported to occur. In addition, adjacent areas shall be included in the assessment if clear pathways of migration exist between the alleged source area and adjacent areas, or if forced air heat or cooling is present and dividing walls that form an airtight barrier between the alleged source area and adjacent areas (including between connecting areas such as attics and crawl spaces) are not present. If adjacent areas are owned by parties other than the owner of the Clanlab, the owner/tenant of adjacent areas shall be contacted to request permission to access the units for sampling. If permission is not given within 30 days by the owner or tenant, the adjacent area(s) shall not be included in the assessment, but documentation including a copy of certified mail receipts to the address on record of the owner/tenant shall be included in the report. If permission is granted, the adjacent areas shall be included in the assessment. Adjacent units shall be construed to include only directly adjacent units (above, below and side by side) except when other units are served by a common ventilation system, in which case all areas served by the system that includes the source unit are included.
(c) If a Clanlab is reported to exist in non-residential spaces (e.g., storage units, commercial buildings, and any other), the assessment shall include all space to which the person(s) who allegedly were involved in the Clanlab(s) had access and spaces that are served by a common ventilation system that includes the source area.
041-2 Wyo. Code R. § 2-5