Current through September 17, 2024
A 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.
007.01
PROCEDURES.
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:
(i) Site address;
(ii) Sample location;
(iii) Sample number;
(iv) Date and time of collection;
and
(v) Name of sample collector;
and
(G) All samples must
be analyzed for methamphetamine.
007.02
AIR 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.
007.03
REMOVABLE 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.
007.04
PLUMBING 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.
007.05
MERCURY. 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.
