| Title | Definition |
|---|---|
| Perforations | A series of openings in a casing, made either before or after installation of the casing, to permit the entrance of water into the well. A.A.C. R12-15-801(19). |
| Piezometer Well | This is a well that is designed and drilled for the purpose of monitoring water levels within a specific depth interval. A.A.C. R12-15-801(20). |
| Pitless Adaptor | A commercially manufactured watertight unit or device designed for attachment to a steel well casing which permits discharge from the well below the land surface and allows access into the well casing while preventing contaminants from entering the well. A.A.C. R12-15-801(21). For more information, please view this diagram of a pitless adaptor. |
| Polluted Water | Water whose chemical, physical, biological, or radiological integrity has been degraded through the artificial or natural infusion of chemicals, radionuclides, heat, biological organisms, or mineralogical or other extraneous matter. A.A.C. R12-15-801(22). |
| Pressure Grouting | A process by which a grout is confined within the borehole or casing of a well by the use of retaining plugs, packers, or a displacing fluid by which sufficient pressure is applied to drive the grout into and within the annular space or interval to be grouted. A.A.C. R12-15-801(23). |