Ill. Admin. Code tit. 35, § 391.520 – Groundwater Sampling and Analyses | Midpage
§ 391.520
Ill. Admin. Code tit. 35, § 391.520
Groundwater Sampling and Analyses
AUTHORITY: Implementing and authorized by Section 4(g) of the Environmental Protection Act (Ill. Rev. Stat. 1981, ch. 111½ par. 1004(g)) and by 35 Ill. Adm. Code 309.155, 309.208(e), and 309.262.ENVIRONMENTAL PROTECTION AGENCY
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).