Current through Register Vol. 48, No. 38, September 20, 2024
a)
Contaminated soil or groundwater must be sampled in accordance with the
requirements of this Part and analyzed for the presence and concentration of
the target agrichemicals included on the list of compounds required in 8 Ill.
Adm. Code
255.50(a).
Soil samples may be composited. At least one composite soil sample is required
per one-eighth acre of the spill site, using six subsamples per
composite.
b) Soil samples from the
land application area, excluding field access lanes, must be collected to the
depth of incorporation or three inches, whichever is less. Soil samples from
field access lanes must be collected to a depth of six inches.
c) Soil samples collected from the land
application area must be analyzed for the agrichemicals that were the basis for
determining the application rate of the contaminated soil or groundwater
pursuant to Section
258.70(e).
d) Sampling of the land application area must
be conducted in accordance with Appendix D of this Part, except field access
lanes that must be sampled at the rate of at least one composite soil sample
per 500 lineal feet.
e) All field
and laboratory activities must satisfy the following to ensure that all data
are scientifically valid and of known precision and accuracy:
1) All field sampling activities relative to
sample collection, documentation, preparation, labeling, storage, shipment and
security, quality assurance and quality control, acceptance criteria,
corrective action, and decontamination procedures must be conducted in
accordance with "Test Methods for Evaluating Solid Waste, Physical/Chemical
Methods" (SW-846), incorporated by reference at Section
258.40
of this Part.
2) All field
measurement activities relative to equipment and instrument operation,
calibration and maintenance, corrective action, and data handling must be
conducted in accordance with SW-846, or with an equipment or instrument
manufacturer's or vendor's published standard operating procedures.
3) All laboratory quantitative analyses of
soil samples to determine concentrations of pesticides must be conducted fully
in accordance with SW-846, relative to all facilities, equipment and
instrumentation, operating procedures, sample management, test methods,
equipment calibration and maintenance, quality assurance and quality control,
corrective action, data reduction and validation, reporting, and records
management. The practical quantitation limit (PQL) of the test methods selected
must be less than or equal to the RSDLs contained in Appendix A of this
Part.
4) All laboratory
quantitative analyses of soil samples to determine concentrations of pesticides
or nutrients must be conducted on the less than 2-mm fraction.
5) All laboratory quantitative analyses of
soil samples to determine concentrations of pesticides that require more
sensitive detection limits or cannot be analyzed by standard methods identified
in SW-846 must be conducted in accordance with analytical protocols developed
in consultation with and approved by the Department.
6) All groundwater monitoring and analytical
procedures must be conducted in accordance with 35 Ill. Adm. Code
620.505
and
620.510.
7) All quantitative analyses of soil and
groundwater samples that utilize any of the approved test methods identified in
35 Ill. Adm. Code
186.180
shall be completed by an accredited laboratory in accordance with the
requirements of 35 Ill. Adm. Code 186. Quantitative analyses not utilizing an
accredited laboratory in accordance with Part 186 shall be deemed
invalid.