- ECT Manufacturing's Prepacked Screen monitoring wells are designed for setting small diameter groundwater monitoring wells. Prepacked screens consist of a standard, slotted PVC well screen pipe surrounded by a stainless-steel mesh. Sand is packed between the slotted PVC and the stainless-steel mesh. Since the sand is packed around the slotted PVC before the well screen is installed, using prepacks guarantees sand will be located directly around the well screen. This makes groundwater monitoring well installation quicker and more efficient than traditional methods. The 4-inch prepack uses a standard, 4 in. Schedule 40 slotted screen with a sand pack and 5.5 in. diameter stainless steel mesh screen on the outside. Prepacked Monitoring Well Benefits Quick and simple installation. Prepacked Screen designed with 20/40 grade environmental sand. No cuttings generated during installation. Meets all requirements of a RCRA well with exception of the smaller diameter. Permanent monitoring well installation with a Geoprobe® machine. Well seal and grouting meet EPA and ASTM D-5092 method requirements. Minimal disturbance of natural formation conditions. Can be developed, purged, and sampled using inexpensive tubing check valve system. Minimal development and purge water generated for sampling reducing time requirements and disposal costs. Uses standard above-ground or flush-mount well protectors. Small diameter bladder pumps available for 1.0-inch wells Specifications*Outer Layer: 304 Stainless Steel ScreenOuter Mesh Size: 65 MeshSand Pack: 20/40Inner Layer: 4" Sch40 PVC Screen 2tpiDimensions: 4″ ID x 5.5″ ODLength: 5'Filtration Capacity: fine*Modified upon request Shur-Pak™ Glass Bead Filter Pack available upon request.
