AIPG Minnesota Section,
We are looking for ‘testimonials’ on how people have used the county geologic atlases. We occasionally get requests to give presentations on the topic – “Just what are the County Geologic Atlas good for?” We also routinely get asked by legislators to provide examples at the local level of how they are used, and even what the economic advantages to having a county atlas are.
We know the CGA is used by a wide variety of stakeholders for many different applications and their availability often results in time and money savings on projects (high capacity wells, groundwater modeling, landfill siting, DOT uses them in structure work, counties use them for many zoning applications, and many more).
We are particularly interested to know about specific projects, but also find value in understanding in a more general sense the types of projects you use them for. Here are a couple shortened examples we have received:
Jim de Lambert, Senior Hydrogeologist, Carlson McCain, Inc: “For most projects the initial information sources include the County Geologic Atlas. For Minnesota well siting projects, the County Atlas Series will be my first source of information to help define the project area and to give the area broad hydrogeologic context. This assists in identifying potential target aquifer(s). If the supplier is a Rural Water System, there is often considerable flexibility with well field location and this type of county and regional information can be invaluable.”
Heather Cunningham, Zoning and Environmental Services Administrator, Carlton County: “I would say that I use the atlas on a monthly basis. In the last 6 months, I have used it for the review of an Environmental Assessment Worksheet (EAW), pollution sensitivity for a proposed mixed use development, groundwater contamination at our closed landfill, and in working with a lake association.”
Kristi Anderson, Hydrogeologist, Northwest AqwaTek Solutions: “The majority of what I do is working with the agricultural community for crop irrigation systems; I typically look to the County Geologic Atlas (CGA)….as the starting point for my work.”
Joe Hudak, Assistant Engineering Geologist, Minnesota Department of Transportation: “We typically use the county atlases for subsurface information prior to conducting any geophysical field work or drill rig borings/CPT soundings.”
Martin Larsen, Olmsted County Feedlot Technician, Landowner & Farmer, Olmsted County: “The County Geologic Atlas is an important tool for the Olmsted Soil and Water Conservation District. It is used for animal feedlot permitting and nutrient management planning to locate sinkholes, depth to bedrock and first encountered bedrock. The springshed maps included in some Part B atlases are utilized for local education and outreach.”
If you have specific application examples that you could share it would be especially useful. Or, if you have any leads of others who might use the CGAs, we would be interested in getting those contacts so that we could learn more.
We are also very interested to get your ideas about how we can improve the end-product. Maybe there is a way we can make the CGA more valuable to you.
Thank-you for your help.
Barb Lusardi, Associate Director, Minnesota Geological Survey, [email protected]
Paul Putzier, Supervisor DNR County Geologic Atlas Program, [email protected]