Attachment_4__Leadville_Dewatering_Well_1_Data_Sheet.xlsx

This is a dimensional data sheet for dewatering wells associated with the Leadville Mine Drainage Tunnel (LMDT) project near Leadville, Colorado. The document provides technical specifications for three groundwater pumping wells (DWW-1, DWW-2, and DWW-3) that support the dewatering operations. DWW-1 has a total depth of 136 feet with a 20-inch steel casing and 15-foot casing screen, equipped with an American Marsh VTP pump rated at 1,500 gallons per minute and a 100 HP GE vertical motor. DWW-2 reaches 140 feet deep with a 14-inch casing, 10-foot casing screen, a Hydroflow VTP pump at 700 gallons per minute capacity, and a 60 HP GE EE vertical hollowshaft motor. DWW-3 extends to 351 feet with a 16-inch casing, no casing screen, and matching 8-inch column pipe and 10-inch pump bowl diameter specifications.

This technical specification sheet directly supports the solicitation (140R6026Q0046) issued by the Department of the Interior Bureau of Reclamation for repair services on Dewatering Well #1. The dimensional data provides contractors with critical equipment specifications and well characteristics necessary to develop repair proposals and cost estimates for the groundwater pumping well rehabilitation project. All three wells are configured with 8-inch column pipes and 10-inch pump bowl diameters, with column pipe lengths ranging from 120 to 290 feet depending on total well depth.