Ground water monitoring may be required for any large concentrated animal feeding operation based on a site-specific review by the Department (Title 130, Chapter 13, Section 001). Some of the conditions found to be important in include shallow depth to water, sandy or coarse-grained sediments, very permeable subsurface sediments, existing ground water quality, and/or nearby use of the ground water as a drinking water source (domestic or municipal).
This Guideline is set up in a question and answer format for quick reference. The Guideline is intended for the owner/operator of the livestock operation, the consulting engineer, or other consultant to help them as they develop and implement a Ground Water Monitoring Plan (GWMP) [including the Sampling and Analysis Plan] for LWCFs. An attempt has been made to list applicable state regulations. Reasonable and well-defined plans will be considered, even if they do not correspond directly to this Guideline. Semi-annual ground water monitoring reports generated as a result of the GWMP are considered legal documents.
This Guideline builds on Chapter 13, Ground Water Monitoring, of Title 130, Livestock Waste Control Regulations. Please refer to Chapter 13 if you have more specific questions.
NOTE: Ground Water monitoring will not be required for Small and Medium facilities, unless one or more of the following have occurred (Title 130, Chapter 13, Section 002):
- A spill or non-permitted release from the facility,
- The Department determines that percolation from the facility exceeds the allowable percolation rate, or
- Any other circumstance that the Department determines may impact ground water quality.