USGS Groundwater Information
Quality-Assurance Plan for District Ground-Water Activities
The Ground-Water Quality-Assurance Plan is available in the following formats:
Note: Some or all of this information is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of the free Adobe Reader from the Adobe web site. Visit https://www.adobe.com/accessibility/ for free tools that allow visually impaired users to read PDF files.