Kennecott Water System Scoping Letter

The objective of the Repair Historic Kennecott Mine Structures and Utilities Project is to repair a
number of the historic Kennecott Mine structures and upgrade the utilities in the historic area
owned by the National Park Service (NPS). This design narrative discusses Phase II of the
project, which addresses water system repairs and upgrades by evaluating options for a codecompliant
source of potable water and supplying water for fire suppression to serve the
Kennecott National Historic Landmark.

1.1 Purpose and Need
According to the NPS Scope of Services The State of Alaska Department of Environmental
Conservation (DEC) informed the park in November 2004, that due to past violations of water
quality, the NPS is a candidate for the state's Significant Non-Compliant (SNC) List. The
system currently operates on a waiver from DEC regulation. The system needs upgrade to be
compliant with current surface water treatment regulations; state and federal. NPS staff have
also expressed concerns about the quality of water from their existing source.
NPS owns 20 historic buildings as part of the Historic Kennecott Mine. With numerous historic
timber framed structures at the mine, the installation of a fire suppression system is necessary for
visitor safety and resource protection.

1.2 Project Scope
The replacement of the domestic water system and the addition of a fire suppression system will
include the development of a water source, the construction of an intake structure, the installation
of water storage tanks sufficient for the domestic water and fire suppression demands,
construction of a treatment facility compliant with the DEC drinking water standards, and the
construction of a distribution system to meet the domestic and fire suppression needs. Six
buildings will receive fire suppression systems and three buildings will receive domestic water
services.

Document Content:

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