Section 178-24-007 - CONFIRMATION SAMPLINGA decontamination consultant must collect confirmation samples for analysis after completion of the decontamination procedures. Samples collected for offsite quantitative laboratory analysis, versus onsite semi-quantitative immunoassay, must be analyzed using United States Environmental Protection Agency modified method #8270. This document is available for viewing at the Department of Health and Human Services, Division of Public Health, Environmental Health, 301 Centennial Mall South, Lincoln, Nebraska 68509. Confirmation sampling is required to ensure that concentrations of the chemicals of potential versus concern are not present at the site above the standards required in 178 NAC 24-009. If the standards are not achieved, the property owner or a decontamination consultant must perform additional decontamination until these standards are met.
007.01PROCEDURES. Confirmation sampling procedures are as follows. (A) All sample locations must be photographed;(B) Samples must be collected from all areas identified in this section following the sampling procedures outlined in this section;(C) All samples must be collected by strict adherence to the sample kit or laboratory instructions;(D) At a minimum, one sample media blank, treated in the same fashion but without wiping, must be submitted for every ten samples collected;(E) All samples must be obtained, handled, and preserved under a chain of custody (COC) procedure;(F) All samples must be labeled with the:(iv) Date and time of collection; and(v) Name of sample collector; and(G) All samples must be analyzed for methamphetamine.007.02AIR DISTRIBUTION SYSTEM AND VENTILATION SYSTEMS. Confirmation sampling procedures for air distribution system and ventilation systems are as follows. (A) A wipe kit as specified in 178 NAC 24-002 must be used to collect the confirmation sample;(B) At a minimum, one 100 square centimeter wipe sample must be collected and analyzed from the ductwork directly inside the inlet of the air distribution system, where air is brought into the system, as opposed to a vent where air is forced back out of the system. A sample must also be collected and analyzed from within the first 12 inches of each ventilation system; and(C) Disposable templates or masking tape must be attached to the area to be sampled. The sample area must not be touched prior to collection of the sample. The template must be left in place until the test results are known.007.03REMOVABLE ITEMS AND SURFACES. Confirmation sampling procedures for removable items and surfaces are as follows. (A) A wipe kit as specified in 178 NAC 24-002 must be used to collect the confirmation sample;(B) At a minimum, one 100 square centimeter wipe sample must be collected and analyzed from: (i) All surfaces in the cooking area, ceiling, floor, each wall, and countertops;(ii) Each room or area at the site potentially impacted by contamination;(iii) Each room or area served by the air distribution system; and(iv) From all removable items that the property owner would like to retain;(C) At a minimum, one sample media blank, treated in the same fashion but without wiping, must be submitted for every ten samples collected; and(D) Disposable templates or masking tape must be attached to the area to be sampled. The sample area must not be touched prior to collection of the sample. The template must be left in place until the test results are known.007.04PLUMBING AND SEPTIC SYSTEMS. Confirmation sampling procedures for plumbing and septic systems are as follows. (A) All accessible plumbing must be tested for volatile organic compounds, using instrumentation such as a photo ionization detector to determine if there are potentially harmful or combustible gases present. Instrument manufacturer guidelines must be followed for use and analysis of total volatile organic compounds. The equipment probe must be held in the plumbing pipe above the trap for a minimum of 60 seconds; and(B) The Nebraska Department of Environment and Energy must be consulted to determine required confirmation sampling for the septic system. A sample of the septic tank liquid, if applicable, must be collected and analyzed for the site chemicals of potential concern.007.05MERCURY. Confirmation sampling procedures for mercury presence in indoor air are as follows.(A) If the cooking method is unknown or is known to be the phenyl 2 propane (P2P) method, confirmation sampling of indoor air must be performed using a mercury vapor analyzer, to analyze for the presence of mercury;(B) The indoor temperature of the structure must be documented and maintained between 75 and 80 degrees Fahrenheit throughout the sampling; and(C) At a minimum, one real time confirmation sample for mercury analysis must be collected in each room on the level of the structure where the methamphetamine cooking area was located, from a breathing zone height of between three to four feet from ground level. All collection locations must be documented.178 Neb. Admin. Code, ch. 24, § 007
Amended effective 6/14/2023