Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 391 - DESIGN CRITERIA FOR SLUDGE APPLICATION ON LAND
Subpart E - SAMPLE COLLECTION AND ANALYSIS
Section 391.520 - Groundwater Sampling and Analyses
Universal Citation: 35 IL Admin Code ยง 391.520
Current through Register Vol. 48, No. 38, September 20, 2024
a) Groundwater samples shall be collected by one of the following methods:
1) Peristaltic
pumps;
2) Submersible diaphragm
pumps;
3) Bailing method using
stainless steel or PVC materials;
b) Air lift or nitrogen lift pumping equipment shall not be used.
c) Groundwater samples shall be filtered at the time of collection using a 0.45 micron filter or equivalent, however laboratory filtration is acceptable provided it is performed within 15 minutes from the time of collection. Groundwater samples shall be preserved and analyzed in accordance with Standard Methods for the Examination of Water and Wastewater (14th edition).
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