Groundwater Monitoring

Illinois EPA is committed to the protection of groundwater in the State of Illinois and better management of the groundwater data submitted to measure a facility's impact on groundwaters of the State. Facilities where groundwater monitoring and reporting is required include:

1. permitted non-hazardous and hazardous waste landfills;
2. land-based hazardous waste units (such as surface impoundments);
3. units undergoing RCRA closure where contamination has possibly migrated to the groundwater; and
4. units similar to the units identified in Items 1 through 3 which are being addressed in the RCRA corrective action program.

Required of all permitted facilities.

• Introduction
• Example Format Submission Files  (With Point and Click Help)
• Common mistakes found in electronically submitted files

• Monitoring Well Diagram
  
  Graphic of the construction details of a groundwater monitoring well. This form should be used for guidance purposes when installing a groundwater monitoring well.
• Well Plugging and Abandonment Procedures
  
  Step-by-step procedures for the plugging and abandonment of a groundwater monitoring well.
• Field Boring Log Form
  
  Characterization of the geology, sample depths, depth to groundwater, etc. This form must be utilized in conjunction with a Monitoring Well Completion Form. One completed form must be submitted for each groundwater monitoring well installed.
• Monitoring Well Completion Form
  
  Construction details for a groundwater monitoring well. This form must be utilized in conjunction with a Field Boring Log Form. One completed form must be submitted for each groundwater monitoring well installed.
• Solid Waste Landfill Groundwater, Leachate, Facility and Gas Reporting Form (LPC-591)
• RCRA Facility Groundwater, Leachate, and Gas Reporting Form (LPC-592)
• List of Monitoring Constituents and Storet Numbers

Guidance

• Appendix C to LPC-PA2  "Instructions for the Groundwater Protection Evaluation for Putrescible and Chemical Waste Landfills" (Attachment 1 from LPC-PA19 is most recent and should be used for the monitoring constituents.)
• LPC-PA19 "Instructions for a Significant Modification Demonstrating Compliance with 35 Ill. Adm. Code, Subtitle G, Part 814, Subpart C".

Regulations

• Illinois Water Well Construction Code

On the Illinois Pollution Control Board site you will find the appropriate regulations (under title 35 of the Illinois Administrative Code) for the following topics:

Non-Hazardous Waste Landfills

• Groundwater Monitoring (811.319)
• Groundwater Classification (620 - Subpart B)

Hazardous Waste Landfills

• Releases from Solid Waste Management Units
  
  (724 - Subpart F)
• Groundwater Classification (620 - Subpart B)

• Non-Hazardous Waste Program 
• Hazardous Waste Program